diff --git a/src/compiler/_namespaces/ts.ts b/src/compiler/_namespaces/ts.ts
index b31b19cae7cb5..5a01767f96d44 100644
--- a/src/compiler/_namespaces/ts.ts
+++ b/src/compiler/_namespaces/ts.ts
@@ -38,6 +38,7 @@ export * from "../transformers/ts";
 export * from "../transformers/classFields";
 export * from "../transformers/typeSerializer";
 export * from "../transformers/legacyDecorators";
+export * from "../transformers/esDecorators";
 export * from "../transformers/es2017";
 export * from "../transformers/es2018";
 export * from "../transformers/es2019";
diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index b9e411068d3ac..68e18e007ea12 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -69,8 +69,10 @@ import {
     CheckFlags,
     ClassDeclaration,
     ClassElement,
+    classElementOrClassElementParameterIsDecorated,
     ClassExpression,
     ClassLikeDeclaration,
+    classOrConstructorParameterIsDecorated,
     ClassStaticBlockDeclaration,
     clear,
     combinePaths,
@@ -100,6 +102,7 @@ import {
     createDiagnosticForFileFromMessageChain,
     createDiagnosticForNode,
     createDiagnosticForNodeArray,
+    createDiagnosticForNodeArrayFromMessageChain,
     createDiagnosticForNodeFromMessageChain,
     createDiagnosticMessageChainFromDiagnostic,
     createEmptyExports,
@@ -242,6 +245,7 @@ import {
     getDeclarationOfKind,
     getDeclarationsOfKind,
     getDeclaredExpandoInitializer,
+    getDecorators,
     getDirectoryPath,
     getEffectiveBaseTypeNode,
     getEffectiveConstraintOfTypeParameter,
@@ -532,6 +536,7 @@ import {
     isIndexedAccessTypeNode,
     isInExpressionContext,
     isInfinityOrNaNString,
+    isInitializedProperty,
     isInJSDoc,
     isInJSFile,
     isInJsonFile,
@@ -604,6 +609,7 @@ import {
     isModuleOrEnumDeclaration,
     isModuleWithStringLiteralName,
     isNamedDeclaration,
+    isNamedEvaluationSource,
     isNamedExports,
     isNamedTupleMember,
     isNamespaceExport,
@@ -660,6 +666,7 @@ import {
     isRightSideOfQualifiedNameOrPropertyAccessOrJSDocMemberName,
     isSameEntityName,
     isSetAccessor,
+    isSetAccessorDeclaration,
     isShorthandAmbientModuleSymbol,
     isShorthandPropertyAssignment,
     isSingleOrDoubleQuote,
@@ -1038,6 +1045,7 @@ import {
     VisitResult,
     VoidExpression,
     walkUpBindingElementsAndPatterns,
+    walkUpOuterExpressions,
     walkUpParenthesizedExpressions,
     walkUpParenthesizedTypes,
     walkUpParenthesizedTypesAndGetParentAndChild,
@@ -1390,6 +1398,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     // is because diagnostics can be quite expensive, and we want to allow hosts to bail out if
     // they no longer need the information (for example, if the user started editing again).
     let cancellationToken: CancellationToken | undefined;
+
+    const requestedExternalEmitHelperNames = new Set<string>();
     let requestedExternalEmitHelpers: ExternalEmitHelpers;
     let externalHelpersModule: Symbol;
 
@@ -1412,6 +1422,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     const compilerOptions = host.getCompilerOptions();
     const languageVersion = getEmitScriptTarget(compilerOptions);
     const moduleKind = getEmitModuleKind(compilerOptions);
+    const legacyDecorators = !!compilerOptions.experimentalDecorators;
     const useDefineForClassFields = getUseDefineForClassFields(compilerOptions);
     const allowSyntheticDefaultImports = getAllowSyntheticDefaultImports(compilerOptions);
     const strictNullChecks = getStrictOptionValue(compilerOptions, "strictNullChecks");
@@ -1838,6 +1849,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     const stringMappingTypes = new Map<string, StringMappingType>();
     const substitutionTypes = new Map<string, SubstitutionType>();
     const subtypeReductionCache = new Map<string, Type[]>();
+    const decoratorContextOverrideTypeCache = new Map<string, Type>();
     const cachedTypes = new Map<string, Type>();
     const evolvingArrayTypes: EvolvingArrayType[] = [];
     const undefinedProperties: SymbolTable = new Map();
@@ -2067,6 +2079,14 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     let deferredGlobalBigIntType: ObjectType | undefined;
     let deferredGlobalNaNSymbol: Symbol | undefined;
     let deferredGlobalRecordSymbol: Symbol | undefined;
+    let deferredGlobalClassDecoratorContextType: GenericType | undefined;
+    let deferredGlobalClassMethodDecoratorContextType: GenericType | undefined;
+    let deferredGlobalClassGetterDecoratorContextType: GenericType | undefined;
+    let deferredGlobalClassSetterDecoratorContextType: GenericType | undefined;
+    let deferredGlobalClassAccessorDecoratorContextType: GenericType | undefined;
+    let deferredGlobalClassAccessorDecoratorTargetType: GenericType | undefined;
+    let deferredGlobalClassAccessorDecoratorResultType: GenericType | undefined;
+    let deferredGlobalClassFieldDecoratorContextType: GenericType | undefined;
 
     const allPotentiallyUnusedIdentifiers = new Map<Path, PotentiallyUnusedIdentifier[]>(); // key is file name
 
@@ -2349,6 +2369,18 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         return symbol;
     }
 
+    function createParameter(name: __String, type: Type) {
+        const symbol = createSymbol(SymbolFlags.FunctionScopedVariable, name);
+        symbol.links.type = type;
+        return symbol;
+    }
+
+    function createProperty(name: __String, type: Type) {
+        const symbol = createSymbol(SymbolFlags.Property, name);
+        symbol.links.type = type;
+        return symbol;
+    }
+
     function getExcludedSymbolFlags(flags: SymbolFlags): SymbolFlags {
         let result: SymbolFlags = 0;
         if (flags & SymbolFlags.BlockScopedVariable) result |= SymbolFlags.BlockScopedVariableExcludes;
@@ -14810,6 +14842,14 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         return result & ObjectFlags.PropagatingFlags;
     }
 
+    function tryCreateTypeReference(target: GenericType, typeArguments: readonly Type[] | undefined): Type {
+        if (some(typeArguments) && target === emptyGenericType) {
+            return unknownType;
+        }
+
+        return createTypeReference(target, typeArguments);
+    }
+
     function createTypeReference(target: GenericType, typeArguments: readonly Type[] | undefined): TypeReference {
         const id = getTypeListId(typeArguments);
         let type = target.instantiations.get(id);
@@ -15484,6 +15524,38 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         return (deferredGlobalBigIntType ||= getGlobalType("BigInt" as __String, /*arity*/ 0, /*reportErrors*/ false)) || emptyObjectType;
     }
 
+    function getGlobalClassDecoratorContextType(reportErrors: boolean) {
+        return (deferredGlobalClassDecoratorContextType ??= getGlobalType("ClassDecoratorContext" as __String, /*arity*/ 1, reportErrors)) ?? emptyGenericType;
+    }
+
+    function getGlobalClassMethodDecoratorContextType(reportErrors: boolean) {
+        return (deferredGlobalClassMethodDecoratorContextType ??= getGlobalType("ClassMethodDecoratorContext" as __String, /*arity*/ 2, reportErrors)) ?? emptyGenericType;
+    }
+
+    function getGlobalClassGetterDecoratorContextType(reportErrors: boolean) {
+        return (deferredGlobalClassGetterDecoratorContextType ??= getGlobalType("ClassGetterDecoratorContext" as __String, /*arity*/ 2, reportErrors)) ?? emptyGenericType;
+    }
+
+    function getGlobalClassSetterDecoratorContextType(reportErrors: boolean) {
+        return (deferredGlobalClassSetterDecoratorContextType ??= getGlobalType("ClassSetterDecoratorContext" as __String, /*arity*/ 2, reportErrors)) ?? emptyGenericType;
+    }
+
+    function getGlobalClassAccessorDecoratorContextType(reportErrors: boolean) {
+        return (deferredGlobalClassAccessorDecoratorContextType ??= getGlobalType("ClassAccessorDecoratorContext" as __String, /*arity*/ 2, reportErrors)) ?? emptyGenericType;
+    }
+
+    function getGlobalClassAccessorDecoratorTargetType(reportErrors: boolean) {
+        return (deferredGlobalClassAccessorDecoratorTargetType ??= getGlobalType("ClassAccessorDecoratorTarget" as __String, /*arity*/ 2, reportErrors)) ?? emptyGenericType;
+    }
+
+    function getGlobalClassAccessorDecoratorResultType(reportErrors: boolean) {
+        return (deferredGlobalClassAccessorDecoratorResultType ??= getGlobalType("ClassAccessorDecoratorResult" as __String, /*arity*/ 2, reportErrors)) ?? emptyGenericType;
+    }
+
+    function getGlobalClassFieldDecoratorContextType(reportErrors: boolean) {
+        return (deferredGlobalClassFieldDecoratorContextType ??= getGlobalType("ClassFieldDecoratorContext" as __String, /*arity*/ 2, reportErrors)) ?? emptyGenericType;
+    }
+
     function getGlobalNaNSymbol(): Symbol | undefined {
         return (deferredGlobalNaNSymbol ||= getGlobalValueSymbol("NaN" as __String, /*reportErrors*/ false));
     }
@@ -27363,7 +27435,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             // must instead be rewritten to point to a temporary variable to avoid issues with the double-bind
             // behavior of class names in ES6.
             if (declaration.kind === SyntaxKind.ClassDeclaration
-                && nodeIsDecorated(declaration as ClassDeclaration)) {
+                && nodeIsDecorated(legacyDecorators, declaration as ClassDeclaration)) {
                 let container = getContainingClass(node);
                 while (container !== undefined) {
                     if (container === declaration && container.name !== node) {
@@ -27672,7 +27744,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     }
 
     function checkThisInStaticClassFieldInitializerInDecoratedClass(thisExpression: Node, container: Node) {
-        if (isPropertyDeclaration(container) && hasStaticModifier(container) &&
+        if (isPropertyDeclaration(container) && hasStaticModifier(container) && legacyDecorators &&
             container.initializer && textRangeContainsPositionInclusive(container.initializer, thisExpression.pos) && hasDecorators(container.parent)) {
                 error(thisExpression, Diagnostics.Cannot_use_this_in_a_static_property_initializer_of_a_decorated_class);
         }
@@ -28410,6 +28482,11 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             getTypeAtPosition(signature, argIndex);
     }
 
+    function getContextualTypeForDecorator(decorator: Decorator): Type | undefined {
+        const signature = getDecoratorCallSignature(decorator);
+        return signature ? getOrCreateTypeFromSignature(signature) : undefined;
+    }
+
     function getContextualTypeForSubstitutionExpression(template: TemplateExpression, substitutionExpression: Expression) {
         if (template.parent.kind === SyntaxKind.TaggedTemplateExpression) {
             return getContextualTypeForArgument(template.parent as TaggedTemplateExpression, substitutionExpression);
@@ -28875,7 +28952,9 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 return getContextualTypeForAwaitOperand(parent as AwaitExpression, contextFlags);
             case SyntaxKind.CallExpression:
             case SyntaxKind.NewExpression:
-                return getContextualTypeForArgument(parent as CallExpression | NewExpression, node);
+                return getContextualTypeForArgument(parent as CallExpression | NewExpression | Decorator, node);
+            case SyntaxKind.Decorator:
+                return getContextualTypeForDecorator(parent as Decorator);
             case SyntaxKind.TypeAssertionExpression:
             case SyntaxKind.AsExpression:
                 return isConstTypeReference((parent as AssertionExpression).type) ? getContextualType(parent as AssertionExpression, contextFlags) : getTypeFromTypeNode((parent as AssertionExpression).type);
@@ -32183,38 +32262,15 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
      * Returns the synthetic argument list for a decorator invocation.
      */
     function getEffectiveDecoratorArguments(node: Decorator): readonly Expression[] {
-        const parent = node.parent;
         const expr = node.expression;
-        switch (parent.kind) {
-            case SyntaxKind.ClassDeclaration:
-            case SyntaxKind.ClassExpression:
-                // For a class decorator, the `target` is the type of the class (e.g. the
-                // "static" or "constructor" side of the class).
-                return [
-                    createSyntheticExpression(expr, getTypeOfSymbol(getSymbolOfDeclaration(parent)))
-                ];
-            case SyntaxKind.Parameter:
-                // A parameter declaration decorator will have three arguments (see
-                // `ParameterDecorator` in core.d.ts).
-                const func = parent.parent as FunctionLikeDeclaration;
-                return [
-                    createSyntheticExpression(expr, parent.parent.kind === SyntaxKind.Constructor ? getTypeOfSymbol(getSymbolOfDeclaration(func)) : errorType),
-                    createSyntheticExpression(expr, anyType),
-                    createSyntheticExpression(expr, numberType)
-                ];
-            case SyntaxKind.PropertyDeclaration:
-            case SyntaxKind.MethodDeclaration:
-            case SyntaxKind.GetAccessor:
-            case SyntaxKind.SetAccessor:
-                // A method or accessor declaration decorator will have two or three arguments (see
-                // `PropertyDecorator` and `MethodDecorator` in core.d.ts). If we are emitting decorators
-                // for ES3, we will only pass two arguments.
-                const hasPropDesc = languageVersion !== ScriptTarget.ES3 && (!isPropertyDeclaration(parent) || hasAccessorModifier(parent));
-                return [
-                    createSyntheticExpression(expr, getParentTypeOfClassElement(parent as ClassElement)),
-                    createSyntheticExpression(expr, getClassElementPropertyKeyType(parent as ClassElement)),
-                    createSyntheticExpression(expr, hasPropDesc ? createTypedPropertyDescriptorType(getTypeOfNode(parent)) : anyType)
-                ];
+        const signature = getDecoratorCallSignature(node);
+        if (signature) {
+            const args: Expression[] = [];
+            for (const param of signature.parameters) {
+                const type = getTypeOfSymbol(param);
+                args.push(createSyntheticExpression(expr, type));
+            }
+            return args;
         }
         return Debug.fail();
     }
@@ -32223,6 +32279,15 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
      * Returns the argument count for a decorator node that works like a function invocation.
      */
     function getDecoratorArgumentCount(node: Decorator, signature: Signature) {
+        return compilerOptions.experimentalDecorators ?
+            getLegacyDecoratorArgumentCount(node, signature) :
+            2;
+    }
+
+    /**
+     * Returns the argument count for a decorator node that works like a function invocation.
+     */
+    function getLegacyDecoratorArgumentCount(node: Decorator, signature: Signature) {
         switch (node.parent.kind) {
             case SyntaxKind.ClassDeclaration:
             case SyntaxKind.ClassExpression:
@@ -32240,6 +32305,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 return Debug.fail();
         }
     }
+
     function getDiagnosticSpanForCallNode(node: CallExpression, doNotIncludeArguments?: boolean) {
         let start: number;
         let length: number;
@@ -32257,13 +32323,20 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         }
         return { start, length, sourceFile };
     }
-    function getDiagnosticForCallNode(node: CallLikeExpression, message: DiagnosticMessage, arg0?: string | number, arg1?: string | number, arg2?: string | number, arg3?: string | number): DiagnosticWithLocation {
+
+    function getDiagnosticForCallNode(node: CallLikeExpression, message: DiagnosticMessage | DiagnosticMessageChain, arg0?: string | number, arg1?: string | number, arg2?: string | number, arg3?: string | number): DiagnosticWithLocation {
         if (isCallExpression(node)) {
             const { sourceFile, start, length } = getDiagnosticSpanForCallNode(node);
-            return createFileDiagnostic(sourceFile, start, length, message, arg0, arg1, arg2, arg3);
+            if ("message" in message) { // eslint-disable-line local/no-in-operator
+                return createFileDiagnostic(sourceFile, start, length, message, arg0, arg1, arg2, arg3);
+            }
+            return createDiagnosticForFileFromMessageChain(sourceFile, message);
         }
         else {
-            return createDiagnosticForNode(node, message, arg0, arg1, arg2, arg3);
+            if ("message" in message) { // eslint-disable-line local/no-in-operator
+                return createDiagnosticForNode(node, message, arg0, arg1, arg2, arg3);
+            }
+            return createDiagnosticForNodeFromMessageChain(node, message);
         }
     }
 
@@ -32283,7 +32356,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         return constructorSymbol === globalPromiseSymbol;
     }
 
-    function getArgumentArityError(node: CallLikeExpression, signatures: readonly Signature[], args: readonly Expression[]) {
+    function getArgumentArityError(node: CallLikeExpression, signatures: readonly Signature[], args: readonly Expression[], headMessage?: DiagnosticMessage) {
         const spreadIndex = getSpreadArgumentIndex(args);
         if (spreadIndex > -1) {
             return createDiagnosticForNode(args[spreadIndex], Diagnostics.A_spread_argument_must_either_have_a_tuple_type_or_be_passed_to_a_rest_parameter);
@@ -32315,18 +32388,34 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         if (isVoidPromiseError && isInJSFile(node)) {
             return getDiagnosticForCallNode(node, Diagnostics.Expected_1_argument_but_got_0_new_Promise_needs_a_JSDoc_hint_to_produce_a_resolve_that_can_be_called_without_arguments);
         }
-        const error = hasRestParameter
-            ? Diagnostics.Expected_at_least_0_arguments_but_got_1
-            : isVoidPromiseError
-                ? Diagnostics.Expected_0_arguments_but_got_1_Did_you_forget_to_include_void_in_your_type_argument_to_Promise
-                : Diagnostics.Expected_0_arguments_but_got_1;
+        const error =
+            isDecorator(node) ?
+                hasRestParameter ? Diagnostics.The_runtime_will_invoke_the_decorator_with_1_arguments_but_the_decorator_expects_at_least_0 :
+                Diagnostics.The_runtime_will_invoke_the_decorator_with_1_arguments_but_the_decorator_expects_0 :
+            hasRestParameter ? Diagnostics.Expected_at_least_0_arguments_but_got_1 :
+            isVoidPromiseError ? Diagnostics.Expected_0_arguments_but_got_1_Did_you_forget_to_include_void_in_your_type_argument_to_Promise :
+            Diagnostics.Expected_0_arguments_but_got_1;
+
         if (min < args.length && args.length < max) {
             // between min and max, but with no matching overload
+            if (headMessage) {
+                let chain = chainDiagnosticMessages(/*details*/ undefined, Diagnostics.No_overload_expects_0_arguments_but_overloads_do_exist_that_expect_either_1_or_2_arguments, args.length, maxBelow, minAbove);
+                chain = chainDiagnosticMessages(chain, headMessage);
+                return getDiagnosticForCallNode(node, chain);
+            }
             return getDiagnosticForCallNode(node, Diagnostics.No_overload_expects_0_arguments_but_overloads_do_exist_that_expect_either_1_or_2_arguments, args.length, maxBelow, minAbove);
         }
         else if (args.length < min) {
             // too short: put the error span on the call expression, not any of the args
-            const diagnostic = getDiagnosticForCallNode(node, error, parameterRange, args.length);
+            let diagnostic: Diagnostic;
+            if (headMessage) {
+                let chain = chainDiagnosticMessages(/*details*/ undefined, error, parameterRange, args.length);
+                chain = chainDiagnosticMessages(chain, headMessage);
+                diagnostic = getDiagnosticForCallNode(node, chain);
+            }
+            else {
+                diagnostic = getDiagnosticForCallNode(node, error, parameterRange, args.length);
+            }
             const parameter = closestSignature?.declaration?.parameters[closestSignature.thisParameter ? args.length + 1 : args.length];
             if (parameter) {
                 const parameterError = createDiagnosticForNode(
@@ -32349,17 +32438,27 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 end++;
             }
             setTextRangePosEnd(errorSpan, pos, end);
+            if (headMessage) {
+                let chain = chainDiagnosticMessages(/*details*/ undefined, error, parameterRange, args.length);
+                chain = chainDiagnosticMessages(chain, headMessage);
+                return createDiagnosticForNodeArrayFromMessageChain(getSourceFileOfNode(node), errorSpan, chain);
+            }
             return createDiagnosticForNodeArray(getSourceFileOfNode(node), errorSpan, error, parameterRange, args.length);
         }
     }
 
-    function getTypeArgumentArityError(node: Node, signatures: readonly Signature[], typeArguments: NodeArray<TypeNode>) {
+    function getTypeArgumentArityError(node: Node, signatures: readonly Signature[], typeArguments: NodeArray<TypeNode>, headMessage?: DiagnosticMessage) {
         const argCount = typeArguments.length;
         // No overloads exist
         if (signatures.length === 1) {
             const sig = signatures[0];
             const min = getMinTypeArgumentCount(sig.typeParameters);
             const max = length(sig.typeParameters);
+            if (headMessage) {
+                let chain = chainDiagnosticMessages(/*details*/ undefined, Diagnostics.Expected_0_type_arguments_but_got_1, min < max ? min + "-" + max : min , argCount);
+                chain = chainDiagnosticMessages(chain, headMessage);
+                return createDiagnosticForNodeArrayFromMessageChain(getSourceFileOfNode(node), typeArguments, chain);
+            }
             return createDiagnosticForNodeArray(getSourceFileOfNode(node), typeArguments, Diagnostics.Expected_0_type_arguments_but_got_1, min < max ? min + "-" + max : min , argCount);
         }
         // Overloads exist
@@ -32376,12 +32475,22 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             }
         }
         if (belowArgCount !== -Infinity && aboveArgCount !== Infinity) {
+            if (headMessage) {
+                let chain = chainDiagnosticMessages(/*details*/ undefined, Diagnostics.No_overload_expects_0_type_arguments_but_overloads_do_exist_that_expect_either_1_or_2_type_arguments, argCount, belowArgCount, aboveArgCount);
+                chain = chainDiagnosticMessages(chain, headMessage);
+                return createDiagnosticForNodeArrayFromMessageChain(getSourceFileOfNode(node), typeArguments, chain);
+            }
             return createDiagnosticForNodeArray(getSourceFileOfNode(node), typeArguments, Diagnostics.No_overload_expects_0_type_arguments_but_overloads_do_exist_that_expect_either_1_or_2_type_arguments, argCount, belowArgCount, aboveArgCount);
         }
+        if (headMessage) {
+            let chain = chainDiagnosticMessages(/*details*/ undefined, Diagnostics.Expected_0_type_arguments_but_got_1, belowArgCount === -Infinity ? aboveArgCount : belowArgCount, argCount);
+            chain = chainDiagnosticMessages(chain, headMessage);
+            return createDiagnosticForNodeArrayFromMessageChain(getSourceFileOfNode(node), typeArguments, chain);
+        }
         return createDiagnosticForNodeArray(getSourceFileOfNode(node), typeArguments, Diagnostics.Expected_0_type_arguments_but_got_1, belowArgCount === -Infinity ? aboveArgCount : belowArgCount, argCount);
     }
 
-    function resolveCall(node: CallLikeExpression, signatures: readonly Signature[], candidatesOutArray: Signature[] | undefined, checkMode: CheckMode, callChainFlags: SignatureFlags, fallbackError?: DiagnosticMessage): Signature {
+    function resolveCall(node: CallLikeExpression, signatures: readonly Signature[], candidatesOutArray: Signature[] | undefined, checkMode: CheckMode, callChainFlags: SignatureFlags, headMessage?: DiagnosticMessage): Signature {
         const isTaggedTemplate = node.kind === SyntaxKind.TaggedTemplateExpression;
         const isDecorator = node.kind === SyntaxKind.Decorator;
         const isJsxOpeningOrSelfClosingElement = isJsxOpeningLikeElement(node);
@@ -32500,6 +32609,9 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                         chain = chainDiagnosticMessages(chain, Diagnostics.The_last_overload_gave_the_following_error);
                         chain = chainDiagnosticMessages(chain, Diagnostics.No_overload_matches_this_call);
                     }
+                    if (headMessage) {
+                        chain = chainDiagnosticMessages(chain, headMessage);
+                    }
                     const diags = getSignatureApplicabilityError(node, args, last, assignableRelation, CheckMode.Normal, /*reportErrors*/ true, () => chain);
                     if (diags) {
                         for (const d of diags) {
@@ -32539,9 +32651,12 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
                     const diags = max > 1 ? allDiagnostics[minIndex] : flatten(allDiagnostics);
                     Debug.assert(diags.length > 0, "No errors reported for 3 or fewer overload signatures");
-                    const chain = chainDiagnosticMessages(
+                    let chain = chainDiagnosticMessages(
                         map(diags, createDiagnosticMessageChainFromDiagnostic),
                         Diagnostics.No_overload_matches_this_call);
+                    if (headMessage) {
+                        chain = chainDiagnosticMessages(chain, headMessage);
+                    }
                     // The below is a spread to guarantee we get a new (mutable) array - our `flatMap` helper tries to do "smart" optimizations where it reuses input
                     // arrays and the emptyArray singleton where possible, which is decidedly not what we want while we're still constructing this diagnostic
                     const related = [...flatMap(diags, d => (d as Diagnostic).relatedInformation) as DiagnosticRelatedInformation[]];
@@ -32558,21 +32673,18 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 }
             }
             else if (candidateForArgumentArityError) {
-                diagnostics.add(getArgumentArityError(node, [candidateForArgumentArityError], args));
+                diagnostics.add(getArgumentArityError(node, [candidateForArgumentArityError], args, headMessage));
             }
             else if (candidateForTypeArgumentError) {
-                checkTypeArguments(candidateForTypeArgumentError, (node as CallExpression | TaggedTemplateExpression | JsxOpeningLikeElement).typeArguments!, /*reportErrors*/ true, fallbackError);
+                checkTypeArguments(candidateForTypeArgumentError, (node as CallExpression | TaggedTemplateExpression | JsxOpeningLikeElement).typeArguments!, /*reportErrors*/ true, headMessage);
             }
             else {
                 const signaturesWithCorrectTypeArgumentArity = filter(signatures, s => hasCorrectTypeArgumentArity(s, typeArguments));
                 if (signaturesWithCorrectTypeArgumentArity.length === 0) {
-                    diagnostics.add(getTypeArgumentArityError(node, signatures, typeArguments!));
+                    diagnostics.add(getTypeArgumentArityError(node, signatures, typeArguments!, headMessage));
                 }
-                else if (!isDecorator) {
-                    diagnostics.add(getArgumentArityError(node, signaturesWithCorrectTypeArgumentArity, args));
-                }
-                else if (fallbackError) {
-                    diagnostics.add(getDiagnosticForCallNode(node, fallbackError));
+                else {
+                    diagnostics.add(getArgumentArityError(node, signaturesWithCorrectTypeArgumentArity, args, headMessage));
                 }
             }
         }
@@ -33284,7 +33396,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             return resolveUntypedCall(node);
         }
 
-        if (isPotentiallyUncalledDecorator(node, callSignatures)) {
+        if (isPotentiallyUncalledDecorator(node, callSignatures) && !isParenthesizedExpression(node.expression)) {
             const nodeStr = getTextOfNode(node.expression, /*includeTrivia*/ false);
             error(node, Diagnostics._0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write_0, nodeStr);
             return resolveErrorCall(node);
@@ -34314,6 +34426,393 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         }
     }
 
+    function createClassDecoratorContextType(classType: Type) {
+        return tryCreateTypeReference(getGlobalClassDecoratorContextType(/*reportErrors*/ true), [classType]);
+    }
+
+    function createClassMethodDecoratorContextType(thisType: Type, valueType: Type) {
+        return tryCreateTypeReference(getGlobalClassMethodDecoratorContextType(/*reportErrors*/ true), [thisType, valueType]);
+    }
+
+    function createClassGetterDecoratorContextType(thisType: Type, valueType: Type) {
+        return tryCreateTypeReference(getGlobalClassGetterDecoratorContextType(/*reportErrors*/ true), [thisType, valueType]);
+    }
+
+    function createClassSetterDecoratorContextType(thisType: Type, valueType: Type) {
+        return tryCreateTypeReference(getGlobalClassSetterDecoratorContextType(/*reportErrors*/ true), [thisType, valueType]);
+    }
+
+    function createClassAccessorDecoratorContextType(thisType: Type, valueType: Type) {
+        return tryCreateTypeReference(getGlobalClassAccessorDecoratorContextType(/*reportErrors*/ true), [thisType, valueType]);
+    }
+
+    function createClassFieldDecoratorContextType(thisType: Type, valueType: Type) {
+        return tryCreateTypeReference(getGlobalClassFieldDecoratorContextType(/*reportErrors*/ true), [thisType, valueType]);
+    }
+
+    /**
+     * Gets a type like `{ name: "foo", private: false, static: true }` that is used to provided member-specific
+     * details that will be intersected with a decorator context type.
+     */
+    function getClassMemberDecoratorContextOverrideType(nameType: Type, isPrivate: boolean, isStatic: boolean) {
+        const key = `${isPrivate ? "p" : "P"}${isStatic ? "s" : "S"}${nameType.id}` as const;
+        let overrideType = decoratorContextOverrideTypeCache.get(key);
+        if (!overrideType) {
+            const members = createSymbolTable();
+            members.set("name" as __String, createProperty("name" as __String, nameType));
+            members.set("private" as __String, createProperty("private" as __String, isPrivate ? trueType : falseType));
+            members.set("static" as __String, createProperty("static" as __String, isStatic ? trueType : falseType));
+            overrideType = createAnonymousType(/*symbol*/ undefined, members, emptyArray, emptyArray, emptyArray);
+            decoratorContextOverrideTypeCache.set(key, overrideType);
+        }
+        return overrideType;
+    }
+
+    function createClassMemberDecoratorContextTypeForNode(node: MethodDeclaration | AccessorDeclaration | PropertyDeclaration, thisType: Type, valueType: Type) {
+        const isStatic = hasStaticModifier(node);
+        const isPrivate = isPrivateIdentifier(node.name);
+        const nameType = isPrivate ? getStringLiteralType(idText(node.name)) : getLiteralTypeFromPropertyName(node.name);
+        const contextType =
+            isMethodDeclaration(node) ? createClassMethodDecoratorContextType(thisType, valueType) :
+            isGetAccessorDeclaration(node) ? createClassGetterDecoratorContextType(thisType, valueType) :
+            isSetAccessorDeclaration(node) ? createClassSetterDecoratorContextType(thisType, valueType) :
+            isAutoAccessorPropertyDeclaration(node) ? createClassAccessorDecoratorContextType(thisType, valueType) :
+            isPropertyDeclaration(node) ? createClassFieldDecoratorContextType(thisType, valueType) :
+            Debug.failBadSyntaxKind(node);
+        const overrideType = getClassMemberDecoratorContextOverrideType(nameType, isPrivate, isStatic);
+        return getIntersectionType([contextType, overrideType]);
+
+    }
+
+    function createClassAccessorDecoratorTargetType(thisType: Type, valueType: Type) {
+        return tryCreateTypeReference(getGlobalClassAccessorDecoratorTargetType(/*reportError*/ true), [thisType, valueType]);
+    }
+
+    function createClassAccessorDecoratorResultType(thisType: Type, valueType: Type) {
+        return tryCreateTypeReference(getGlobalClassAccessorDecoratorResultType(/*reportError*/ true), [thisType, valueType]);
+    }
+
+    function createClassFieldDecoratorInitializerMutatorType(thisType: Type, valueType: Type) {
+        const thisParam = createParameter("this" as __String, thisType);
+        const valueParam = createParameter("value" as __String, valueType);
+        return createFunctionType(/*typeParameters*/ undefined, thisParam, [valueParam], valueType, /*typePredicate*/ undefined, 1);
+    }
+
+    /**
+     * Creates a call signature for an ES Decorator. This method is used by the semantics of
+     * `getESDecoratorCallSignature`, which you should probably be using instead.
+     */
+    function createESDecoratorCallSignature(targetType: Type, contextType: Type, nonOptionalReturnType: Type) {
+        const targetParam = createParameter("target" as __String, targetType);
+        const contextParam = createParameter("context" as __String, contextType);
+        const returnType = getUnionType([nonOptionalReturnType, voidType]);
+        return createCallSignature(/*typeParameters*/ undefined, /*thisParameter*/ undefined, [targetParam, contextParam], returnType);
+    }
+
+    /**
+     * Gets a call signature that should be used when resolving `decorator` as a call. This does not use the value
+     * of the decorator itself, but instead uses the declaration on which it is placed along with its relative
+     * position amongst other decorators on the same declaration to determine the applicable signature. The
+     * resulting signature can be used for call resolution, inference, and contextual typing.
+     */
+    function getESDecoratorCallSignature(decorator: Decorator) {
+        // We are considering a future change that would allow the type of a decorator to affect the type of the
+        // class and its members, such as a `@Stringify` decorator changing the type of a `number` field to `string`, or
+        // a `@Callable` decorator adding a call signature to a `class`. The type arguments for the various context
+        // types may eventually change to reflect such mutations.
+        //
+        // In some cases we describe such potential mutations as coming from a "prior decorator application". It is
+        // important to note that, while decorators are *evaluated* left to right, they are *applied* right to left
+        // to preserve f ৹ g -> f(g(x)) application order. In these cases, a "prior" decorator usually means the
+        // next decorator following this one in document order.
+        //
+        // The "original type" of a class or member is the type it was declared as, or the type we infer from
+        // initializers, before _any_ decorators are applied.
+        //
+        // The type of a class or member that is a result of a prior decorator application represents the
+        // "current type", i.e., the type for the declaration at the time the decorator is _applied_.
+        //
+        // The type of a class or member that is the result of the application of *all* relevant decorators is the
+        // "final type".
+        //
+        // Any decorator that allows mutation or replacement will also refer to an "input type" and an
+        // "output type". The "input type" corresponds to the "current type" of the declaration, while the
+        // "output type" will become either the "input type/current type" for a subsequent decorator application,
+        // or the "final type" for the decorated declaration.
+        //
+        // It is important to understand decorator application order as it relates to how the "current", "input",
+        // "output", and "final" types will be determined:
+        //
+        //  @E2 @E1 class SomeClass {
+        //      @A2 @A1 static f() {}
+        //      @B2 @B1 g() {}
+        //      @C2 @C1 static x;
+        //      @D2 @D1 y;
+        //  }
+        //
+        // Per [the specification][1], decorators are applied in the following order:
+        //
+        // 1. For each static method (incl. get/set methods and `accessor` fields), in document order:
+        //    a. Apply each decorator for that method, in reverse order (`A1`, `A2`).
+        // 2. For each instance method (incl. get/set methods and `accessor` fields), in document order:
+        //    a. Apply each decorator for that method, in reverse order (`B1`, `B2`).
+        // 3. For each static field (excl. auto-accessors), in document order:
+        //    a. Apply each decorator for that field, in reverse order (`C1`, `C2`).
+        // 4. For each instance field (excl. auto-accessors), in document order:
+        //    a. Apply each decorator for that field, in reverse order (`D1`, `D2`).
+        // 5. Apply each decorator for the class, in reverse order (`E1`, `E2`).
+        //
+        // As a result, "current" types at each decorator application are as follows:
+        // - For `A1`, the "current" types of the class and method are their "original" types.
+        // - For `A2`, the "current type" of the method is the "output type" of `A1`, and the "current type" of the
+        //   class is the type of `SomeClass` where `f` is the "output type" of `A1`. This becomes the "final type"
+        //   of `f`.
+        // - For `B1`, the "current type" of the method is its "original type", and the "current type" of the class
+        //   is the type of `SomeClass` where `f` now has its "final type".
+        // - etc.
+        //
+        // [1]: https://arai-a.github.io/ecma262-compare/?pr=2417&id=sec-runtime-semantics-classdefinitionevaluation
+        //
+        // This seems complicated at first glance, but is not unlike our existing inference for functions:
+        //
+        //  declare function pipe<Original, A1, A2, B1, B2, C1, C2, D1, D2, E1, E2>(
+        //      original: Original,
+        //      a1: (input: Original, context: Context<E2>) => A1,
+        //      a2: (input: A1, context: Context<E2>) => A2,
+        //      b1: (input: A2, context: Context<E2>) => B1,
+        //      b2: (input: B1, context: Context<E2>) => B2,
+        //      c1: (input: B2, context: Context<E2>) => C1,
+        //      c2: (input: C1, context: Context<E2>) => C2,
+        //      d1: (input: C2, context: Context<E2>) => D1,
+        //      d2: (input: D1, context: Context<E2>) => D2,
+        //      e1: (input: D2, context: Context<E2>) => E1,
+        //      e2: (input: E1, context: Context<E2>) => E2,
+        //  ): E2;
+
+        // When a decorator is applied, it is passed two arguments: "target", which is a value representing the
+        // thing being decorated (constructors for classes, functions for methods/accessors, `undefined` for fields,
+        // and a `{ get, set }` object for auto-accessors), and "context", which is an object that provides
+        // reflection information about the decorated element, as well as the ability to add additional "extra"
+        // initializers. In most cases, the "target" argument corresponds to the "input type" in some way, and the
+        // return value similarly corresponds to the "output type" (though if the "output type" is `void` or
+        // `undefined` then the "output type" is the "input type").
+
+        const { parent } = decorator;
+        const links = getNodeLinks(parent);
+        if (!links.decoratorSignature) {
+            links.decoratorSignature = anySignature;
+            switch (parent.kind) {
+                case SyntaxKind.ClassDeclaration:
+                case SyntaxKind.ClassExpression: {
+                    // Class decorators have a `context` of `ClassDecoratorContext<Class>`, where the `Class` type
+                    // argument will be the "final type" of the class after all decorators are applied.
+
+                    const node = parent as ClassDeclaration | ClassExpression;
+                    const targetType = getTypeOfSymbol(getSymbolOfDeclaration(node));
+                    const contextType = createClassDecoratorContextType(targetType);
+                    links.decoratorSignature = createESDecoratorCallSignature(targetType, contextType, targetType);
+                    break;
+                }
+
+                case SyntaxKind.MethodDeclaration:
+                case SyntaxKind.GetAccessor:
+                case SyntaxKind.SetAccessor: {
+                    const node = parent as MethodDeclaration | GetAccessorDeclaration | SetAccessorDeclaration;
+                    if (!isClassLike(node.parent)) break;
+
+                    // Method decorators have a `context` of `ClassMethodDecoratorContext<This, Value>`, where the
+                    // `Value` type argument corresponds to the "final type" of the method.
+                    //
+                    // Getter decorators have a `context` of `ClassGetterDecoratorContext<This, Value>`, where the
+                    // `Value` type argument corresponds to the "final type" of the value returned by the getter.
+                    //
+                    // Setter decorators have a `context` of `ClassSetterDecoratorContext<This, Value>`, where the
+                    // `Value` type argument corresponds to the "final type" of the parameter of the setter.
+                    //
+                    // In all three cases, the `This` type argument is the "final type" of either the class or
+                    // instance, depending on whether the member was `static`.
+
+                    const valueType =
+                        isMethodDeclaration(node) ? getOrCreateTypeFromSignature(getSignatureFromDeclaration(node)) :
+                        getTypeOfNode(node);
+
+                    const thisType = hasStaticModifier(node) ?
+                        getTypeOfSymbol(getSymbolOfDeclaration(node.parent)) :
+                        getDeclaredTypeOfClassOrInterface(getSymbolOfDeclaration(node.parent));
+
+                    // We wrap the "input type", if necessary, to match the decoration target. For getters this is
+                    // something like `() => inputType`, for setters it's `(value: inputType) => void` and for
+                    // methods it is just the input type.
+                    const targetType =
+                        isGetAccessorDeclaration(node) ? createGetterFunctionType(valueType) :
+                        isSetAccessorDeclaration(node) ? createSetterFunctionType(valueType) :
+                        valueType;
+
+                    const contextType = createClassMemberDecoratorContextTypeForNode(node, thisType, valueType);
+
+                    // We also wrap the "output type", as needed.
+                    const returnType =
+                        isGetAccessorDeclaration(node) ? createGetterFunctionType(valueType) :
+                        isSetAccessorDeclaration(node) ? createSetterFunctionType(valueType) :
+                        valueType;
+
+                    links.decoratorSignature = createESDecoratorCallSignature(targetType, contextType, returnType);
+                    break;
+                }
+
+                case SyntaxKind.PropertyDeclaration: {
+                    const node = parent as PropertyDeclaration;
+                    if (!isClassLike(node.parent)) break;
+
+                    // Field decorators have a `context` of `ClassFieldDecoratorContext<This, Value>` and
+                    // auto-accessor decorators have a `context` of `ClassAccessorDecoratorContext<This, Value>. In
+                    // both cases, the `This` type argument is the "final type" of either the class or instance,
+                    // depending on whether the member was `static`, and the `Value` type argument corresponds to
+                    // the "final type" of the value stored in the field.
+
+                    const valueType = getTypeOfNode(node);
+                    const thisType = hasStaticModifier(node) ?
+                        getTypeOfSymbol(getSymbolOfDeclaration(node.parent)) :
+                        getDeclaredTypeOfClassOrInterface(getSymbolOfDeclaration(node.parent));
+
+                    // The `target` of an auto-accessor decorator is a `{ get, set }` object, representing the
+                    // runtime-generated getter and setter that are added to the class/prototype. The `target` of a
+                    // regular field decorator is always `undefined` as it isn't installed until it is initialized.
+                    const targetType =
+                        hasAccessorModifier(node) ? createClassAccessorDecoratorTargetType(thisType, valueType) :
+                        undefinedType;
+
+                    const contextType = createClassMemberDecoratorContextTypeForNode(node, thisType, valueType);
+
+                    // We wrap the "output type" depending on the declaration. For auto-accessors, we wrap the
+                    // "output type" in a `ClassAccessorDecoratorResult<This, In, Out>` type, which allows for
+                    // mutation of the runtime-generated getter and setter, as well as the injection of an
+                    // initializer mutator. For regular fields, we wrap the "output type" in an initializer mutator.
+                    const returnType =
+                        hasAccessorModifier(node) ? createClassAccessorDecoratorResultType(thisType, valueType) :
+                        createClassFieldDecoratorInitializerMutatorType(thisType, valueType);
+
+                    links.decoratorSignature = createESDecoratorCallSignature(targetType, contextType, returnType);
+                    break;
+                }
+            }
+        }
+        return links.decoratorSignature === anySignature ? undefined : links.decoratorSignature;
+    }
+
+    function getLegacyDecoratorCallSignature(decorator: Decorator) {
+        const { parent } = decorator;
+        const links = getNodeLinks(parent);
+        if (!links.decoratorSignature) {
+            links.decoratorSignature = anySignature;
+            switch (parent.kind) {
+                case SyntaxKind.ClassDeclaration:
+                case SyntaxKind.ClassExpression: {
+                    const node = parent as ClassDeclaration | ClassExpression;
+                    // For a class decorator, the `target` is the type of the class (e.g. the
+                    // "static" or "constructor" side of the class).
+                    const targetType = getTypeOfSymbol(getSymbolOfDeclaration(node));
+                    const targetParam = createParameter("target" as __String, targetType);
+                    links.decoratorSignature = createCallSignature(
+                        /*typeParameters*/ undefined,
+                        /*thisParameter*/ undefined,
+                        [targetParam],
+                        getUnionType([targetType, voidType])
+                    );
+                    break;
+                }
+                case SyntaxKind.Parameter: {
+                    const node = parent as ParameterDeclaration;
+                    if (!isConstructorDeclaration(node.parent) &&
+                        !((isMethodDeclaration(node.parent) || isSetAccessorDeclaration(node.parent) && isClassLike(node.parent.parent)))) {
+                        break;
+                    }
+
+                    if (getThisParameter(node.parent) === node) {
+                        break;
+                    }
+
+                    const index = getThisParameter(node.parent) ?
+                        node.parent.parameters.indexOf(node) - 1 :
+                        node.parent.parameters.indexOf(node);
+                    Debug.assert(index >= 0);
+
+                    // A parameter declaration decorator will have three arguments (see `ParameterDecorator` in
+                    // core.d.ts).
+
+                    const targetType =
+                        isConstructorDeclaration(node.parent) ? getTypeOfSymbol(getSymbolOfDeclaration(node.parent.parent)) :
+                        getParentTypeOfClassElement(node.parent);
+
+                    const keyType =
+                        isConstructorDeclaration(node.parent) ? undefinedType :
+                        getClassElementPropertyKeyType(node.parent);
+
+                    const indexType = getNumberLiteralType(index);
+
+                    const targetParam = createParameter("target" as __String, targetType);
+                    const keyParam = createParameter("propertyKey" as __String, keyType);
+                    const indexParam = createParameter("parameterIndex" as __String, indexType);
+                    links.decoratorSignature = createCallSignature(
+                        /*typeParameters*/ undefined,
+                        /*thisParameter*/ undefined,
+                        [targetParam, keyParam, indexParam],
+                        voidType
+                    );
+                    break;
+                }
+                case SyntaxKind.MethodDeclaration:
+                case SyntaxKind.GetAccessor:
+                case SyntaxKind.SetAccessor:
+                case SyntaxKind.PropertyDeclaration: {
+                    const node = parent as MethodDeclaration | AccessorDeclaration | PropertyDeclaration;
+                    if (!isClassLike(node.parent)) break;
+
+                    // A method or accessor declaration decorator will have either two or three arguments (see
+                    // `PropertyDecorator` and `MethodDecorator` in core.d.ts). If we are emitting decorators for
+                    // ES3, we will only pass two arguments.
+
+                    const targetType = getParentTypeOfClassElement(node);
+                    const targetParam = createParameter("target" as __String, targetType);
+
+                    const keyType = getClassElementPropertyKeyType(node);
+                    const keyParam = createParameter("propertyKey" as __String, keyType);
+
+                    const returnType =
+                        isPropertyDeclaration(node) ? voidType :
+                        createTypedPropertyDescriptorType(getTypeOfNode(node));
+
+                    const hasPropDesc = languageVersion !== ScriptTarget.ES3 && (!isPropertyDeclaration(parent) || hasAccessorModifier(parent));
+                    if (hasPropDesc) {
+                        const descriptorType = createTypedPropertyDescriptorType(getTypeOfNode(node));
+                        const descriptorParam = createParameter("descriptor" as __String, descriptorType);
+                        links.decoratorSignature = createCallSignature(
+                            /*typeParameters*/ undefined,
+                            /*thisParameter*/ undefined,
+                            [targetParam, keyParam, descriptorParam],
+                            getUnionType([returnType, voidType])
+                        );
+                    }
+                    else {
+                        links.decoratorSignature = createCallSignature(
+                            /*typeParameters*/ undefined,
+                            /*thisParameter*/ undefined,
+                            [targetParam, keyParam],
+                            getUnionType([returnType, voidType])
+                        );
+                    }
+                    break;
+                }
+            }
+        }
+        return links.decoratorSignature === anySignature ? undefined : links.decoratorSignature;
+    }
+
+    function getDecoratorCallSignature(decorator: Decorator) {
+        return legacyDecorators ? getLegacyDecoratorCallSignature(decorator) :
+            getESDecoratorCallSignature(decorator);
+    }
+
     function createPromiseType(promisedType: Type): Type {
         // creates a `Promise<T>` type where `T` is the promisedType argument
         const globalPromiseType = getGlobalPromiseType(/*reportErrors*/ true);
@@ -36847,7 +37346,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         // It is a SyntaxError if the Identifier "eval" or the Identifier "arguments" occurs as the
         // Identifier in a PropertySetParameterList of a PropertyAssignment that is contained in strict code
         // or if its FunctionBody is strict code(11.1.5).
-        checkGrammarDecoratorsAndModifiers(node);
+        checkGrammarModifiers(node);
 
         checkVariableLikeDeclaration(node);
         const func = getContainingFunction(node)!;
@@ -37248,7 +37747,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkPropertyDeclaration(node: PropertyDeclaration | PropertySignature) {
         // Grammar checking
-        if (!checkGrammarDecoratorsAndModifiers(node) && !checkGrammarProperty(node)) checkGrammarComputedPropertyName(node.name);
+        if (!checkGrammarModifiers(node) && !checkGrammarProperty(node)) checkGrammarComputedPropertyName(node.name);
         checkVariableLikeDeclaration(node);
 
         setNodeLinksForPrivateIdentifierScope(node);
@@ -37310,7 +37809,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     }
 
     function checkClassStaticBlockDeclaration(node: ClassStaticBlockDeclaration) {
-        checkGrammarDecoratorsAndModifiers(node);
+        checkGrammarModifiers(node);
 
         forEachChild(node, checkSourceElement);
     }
@@ -38651,40 +39150,81 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             return;
         }
 
+        // if we fail to get a signature and return type here, we will have already reported a grammar error in `checkDecorators`.
+        const decoratorSignature = getDecoratorCallSignature(node);
+        if (!decoratorSignature?.resolvedReturnType) return;
+
         let headMessage: DiagnosticMessage;
-        let expectedReturnType: Type;
+        const expectedReturnType = decoratorSignature.resolvedReturnType;
         switch (node.parent.kind) {
             case SyntaxKind.ClassDeclaration:
+            case SyntaxKind.ClassExpression:
                 headMessage = Diagnostics.Decorator_function_return_type_0_is_not_assignable_to_type_1;
-                const classSymbol = getSymbolOfDeclaration(node.parent);
-                const classConstructorType = getTypeOfSymbol(classSymbol);
-                expectedReturnType = getUnionType([classConstructorType, voidType]);
                 break;
 
             case SyntaxKind.PropertyDeclaration:
+                if (!legacyDecorators) {
+                    headMessage = Diagnostics.Decorator_function_return_type_0_is_not_assignable_to_type_1;
+                    break;
+                }
+                // falls through
+
             case SyntaxKind.Parameter:
                 headMessage = Diagnostics.Decorator_function_return_type_is_0_but_is_expected_to_be_void_or_any;
-                expectedReturnType = voidType;
                 break;
 
             case SyntaxKind.MethodDeclaration:
             case SyntaxKind.GetAccessor:
             case SyntaxKind.SetAccessor:
                 headMessage = Diagnostics.Decorator_function_return_type_0_is_not_assignable_to_type_1;
-                const methodType = getTypeOfNode(node.parent);
-                const descriptorType = createTypedPropertyDescriptorType(methodType);
-                expectedReturnType = getUnionType([descriptorType, voidType]);
                 break;
 
             default:
-                return Debug.fail();
+                return Debug.failBadSyntaxKind(node.parent);
         }
 
-        checkTypeAssignableTo(
-            returnType,
-            expectedReturnType,
-            node,
-            headMessage);
+        checkTypeAssignableTo(returnType, expectedReturnType, node.expression, headMessage);
+    }
+
+    /**
+     * Creates a synthetic `Signature` corresponding to a call signature.
+     */
+    function createCallSignature(
+        typeParameters: readonly TypeParameter[] | undefined,
+        thisParameter: Symbol | undefined,
+        parameters: readonly Symbol[],
+        returnType: Type,
+        typePredicate?: TypePredicate,
+        minArgumentCount: number = parameters.length,
+        flags: SignatureFlags = SignatureFlags.None
+    ) {
+        const decl = factory.createFunctionTypeNode(/*typeParameters*/ undefined, emptyArray, factory.createKeywordTypeNode(SyntaxKind.AnyKeyword));
+        return createSignature(decl, typeParameters, thisParameter, parameters, returnType, typePredicate, minArgumentCount, flags);
+    }
+
+    /**
+     * Creates a synthetic `FunctionType`
+     */
+    function createFunctionType(
+        typeParameters: readonly TypeParameter[] | undefined,
+        thisParameter: Symbol | undefined,
+        parameters: readonly Symbol[],
+        returnType: Type,
+        typePredicate?: TypePredicate,
+        minArgumentCount?: number,
+        flags?: SignatureFlags
+    ) {
+        const signature = createCallSignature(typeParameters, thisParameter, parameters, returnType, typePredicate, minArgumentCount, flags);
+        return getOrCreateTypeFromSignature(signature);
+    }
+
+    function createGetterFunctionType(type: Type) {
+        return createFunctionType(/*typeParameters*/ undefined, /*thisParameter*/ undefined, emptyArray, type);
+    }
+
+    function createSetterFunctionType(type: Type) {
+        const valueParam = createParameter("value" as __String, type);
+        return createFunctionType(/*typeParameters*/ undefined, /*thisParameter*/ undefined, [valueParam], voidType);
     }
 
     /**
@@ -38801,23 +39341,43 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     /** Check the decorators of a node */
     function checkDecorators(node: Node): void {
         // skip this check for nodes that cannot have decorators. These should have already had an error reported by
-        // checkGrammarDecorators.
-        if (!canHaveDecorators(node) || !hasDecorators(node) || !node.modifiers || !nodeCanBeDecorated(node, node.parent, node.parent.parent)) {
+        // checkGrammarModifiers.
+        if (!canHaveDecorators(node) || !hasDecorators(node) || !node.modifiers || !nodeCanBeDecorated(legacyDecorators, node, node.parent, node.parent.parent)) {
             return;
         }
 
-        if (!compilerOptions.experimentalDecorators) {
-            error(node, Diagnostics.Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_in_your_tsconfig_or_jsconfig_to_remove_this_warning);
-        }
-
         const firstDecorator = find(node.modifiers, isDecorator);
         if (!firstDecorator) {
             return;
         }
 
-        checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.Decorate);
-        if (node.kind === SyntaxKind.Parameter) {
-            checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.Param);
+        if (legacyDecorators) {
+            checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.Decorate);
+            if (node.kind === SyntaxKind.Parameter) {
+                checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.Param);
+            }
+        }
+        else if (languageVersion < ScriptTarget.ESNext) {
+            checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.ESDecorateAndRunInitializers);
+            if (isClassDeclaration(node)) {
+                if (!node.name) {
+                    checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.SetFunctionName);
+                }
+                else {
+                    const member = getFirstTransformableStaticClassElement(node);
+                    if (member) {
+                        checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.SetFunctionName);
+                    }
+                }
+            }
+            else if (!isClassExpression(node)) {
+                if (isPrivateIdentifier(node.name) && (isMethodDeclaration(node) || isAccessor(node) || isAutoAccessorPropertyDeclaration(node))) {
+                    checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.SetFunctionName);
+                }
+                if (isComputedPropertyName(node.name)) {
+                    checkExternalEmitHelpers(firstDecorator, ExternalEmitHelpers.PropKey);
+                }
+            }
         }
 
         if (compilerOptions.emitDecoratorMetadata) {
@@ -39900,7 +40460,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkVariableStatement(node: VariableStatement) {
         // Grammar checking
-        if (!checkGrammarDecoratorsAndModifiers(node) && !checkGrammarVariableDeclarationList(node.declarationList)) checkGrammarForDisallowedLetOrConstStatement(node);
+        if (!checkGrammarModifiers(node) && !checkGrammarVariableDeclarationList(node.declarationList)) checkGrammarForDisallowedLetOrConstStatement(node);
         forEach(node.declarationList.declarations, checkSourceElement);
     }
 
@@ -41531,9 +42091,59 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         return true;
     }
 
+    function getFirstTransformableStaticClassElement(node: ClassLikeDeclaration) {
+        const willTransformStaticElementsOfDecoratedClass =
+            !legacyDecorators && languageVersion < ScriptTarget.ESNext &&
+            classOrConstructorParameterIsDecorated(/*useLegacyDecorators*/ false, node);
+        const willTransformPrivateElementsOrClassStaticBlocks = languageVersion <= ScriptTarget.ES2022;
+        const willTransformInitializers = !useDefineForClassFields || languageVersion < ScriptTarget.ES2022;
+        if (willTransformStaticElementsOfDecoratedClass || willTransformPrivateElementsOrClassStaticBlocks) {
+            for (const member of node.members) {
+                if (willTransformStaticElementsOfDecoratedClass && classElementOrClassElementParameterIsDecorated(/*useLegacyDecorators*/ false, member, node)) {
+                    return firstOrUndefined(getDecorators(node)) ?? node;
+                }
+                else if (willTransformPrivateElementsOrClassStaticBlocks) {
+                    if (isClassStaticBlockDeclaration(member)) {
+                        return member;
+                    }
+                    else if (isStatic(member)) {
+                        if (isPrivateIdentifierClassElementDeclaration(member) ||
+                            willTransformInitializers && isInitializedProperty(member)) {
+                            return member;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    function checkClassExpressionExternalHelpers(node: ClassExpression) {
+        if (node.name) return;
+
+        const parent = walkUpOuterExpressions(node);
+        if (!isNamedEvaluationSource(parent)) return;
+
+        const willTransformESDecorators = !legacyDecorators && languageVersion < ScriptTarget.ESNext;
+        let location: Node | undefined;
+        if (willTransformESDecorators && classOrConstructorParameterIsDecorated(/*useLegacyDecorators*/ false, node)) {
+            location = firstOrUndefined(getDecorators(node)) ?? node;
+        }
+        else {
+            location = getFirstTransformableStaticClassElement(node);
+        }
+
+        if (location) {
+            checkExternalEmitHelpers(location, ExternalEmitHelpers.SetFunctionName);
+            if ((isPropertyAssignment(parent) || isPropertyDeclaration(parent) || isBindingElement(parent)) && isComputedPropertyName(parent.name)) {
+                checkExternalEmitHelpers(location, ExternalEmitHelpers.PropKey);
+            }
+        }
+    }
+
     function checkClassExpression(node: ClassExpression): Type {
         checkClassLikeDeclaration(node);
         checkNodeDeferred(node);
+        checkClassExpressionExternalHelpers(node);
         return getTypeOfSymbol(getSymbolOfDeclaration(node));
     }
 
@@ -41544,7 +42154,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkClassDeclaration(node: ClassDeclaration) {
         const firstDecorator = find(node.modifiers, isDecorator);
-        if (firstDecorator && some(node.members, p => hasStaticModifier(p) && isPrivateIdentifierClassElementDeclaration(p))) {
+        if (legacyDecorators && firstDecorator && some(node.members, p => hasStaticModifier(p) && isPrivateIdentifierClassElementDeclaration(p))) {
             grammarErrorOnNode(firstDecorator, Diagnostics.Class_decorators_can_t_be_used_with_static_private_identifier_Consider_removing_the_experimental_decorator);
         }
         if (!node.name && !hasSyntacticModifier(node, ModifierFlags.Default)) {
@@ -42219,7 +42829,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkInterfaceDeclaration(node: InterfaceDeclaration) {
         // Grammar checking
-        if (!checkGrammarDecoratorsAndModifiers(node)) checkGrammarInterfaceDeclaration(node);
+        if (!checkGrammarModifiers(node)) checkGrammarInterfaceDeclaration(node);
 
         checkTypeParameters(node.typeParameters);
         addLazyDiagnostic(() => {
@@ -42261,7 +42871,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkTypeAliasDeclaration(node: TypeAliasDeclaration) {
         // Grammar checking
-        checkGrammarDecoratorsAndModifiers(node);
+        checkGrammarModifiers(node);
         checkTypeNameIsReserved(node.name, Diagnostics.Type_alias_name_cannot_be_0);
         checkExportsOnMergedDeclarations(node);
         checkTypeParameters(node.typeParameters);
@@ -42458,7 +43068,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkEnumDeclarationWorker(node: EnumDeclaration) {
         // Grammar checking
-        checkGrammarDecoratorsAndModifiers(node);
+        checkGrammarModifiers(node);
 
         checkCollisionsForDeclarationName(node, node.name);
         checkExportsOnMergedDeclarations(node);
@@ -42574,7 +43184,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 return;
             }
 
-            if (!checkGrammarDecoratorsAndModifiers(node)) {
+            if (!checkGrammarModifiers(node)) {
                 if (!inAmbientContext && node.name.kind === SyntaxKind.StringLiteral) {
                     grammarErrorOnNode(node.name, Diagnostics.Only_ambient_modules_can_use_quoted_names);
                 }
@@ -42948,7 +43558,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             // If we hit an import declaration in an illegal context, just bail out to avoid cascading errors.
             return;
         }
-        if (!checkGrammarDecoratorsAndModifiers(node) && hasEffectiveModifiers(node)) {
+        if (!checkGrammarModifiers(node) && hasEffectiveModifiers(node)) {
             grammarErrorOnFirstToken(node, Diagnostics.An_import_declaration_cannot_have_modifiers);
         }
         if (checkExternalImportOrExportDeclaration(node)) {
@@ -42983,7 +43593,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             return;
         }
 
-        checkGrammarDecoratorsAndModifiers(node);
+        checkGrammarModifiers(node);
         if (isInternalModuleImportEqualsDeclaration(node) || checkExternalImportOrExportDeclaration(node)) {
             checkImportBinding(node);
             if (hasSyntacticModifier(node, ModifierFlags.Export)) {
@@ -43026,7 +43636,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             return;
         }
 
-        if (!checkGrammarDecoratorsAndModifiers(node) && hasSyntacticModifiers(node)) {
+        if (!checkGrammarModifiers(node) && hasSyntacticModifiers(node)) {
             grammarErrorOnFirstToken(node, Diagnostics.An_export_declaration_cannot_have_modifiers);
         }
 
@@ -43190,7 +43800,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             return;
         }
         // Grammar checking
-        if (!checkGrammarDecoratorsAndModifiers(node) && hasEffectiveModifiers(node)) {
+        if (!checkGrammarModifiers(node) && hasEffectiveModifiers(node)) {
             grammarErrorOnFirstToken(node, Diagnostics.An_export_assignment_cannot_have_modifiers);
         }
 
@@ -45592,24 +46202,28 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                     const uncheckedHelpers = helpers & ~requestedExternalEmitHelpers;
                     for (let helper = ExternalEmitHelpers.FirstEmitHelper; helper <= ExternalEmitHelpers.LastEmitHelper; helper <<= 1) {
                         if (uncheckedHelpers & helper) {
-                            const name = getHelperName(helper);
-                            const symbol = getSymbol(helpersModule.exports!, escapeLeadingUnderscores(name), SymbolFlags.Value);
-                            if (!symbol) {
-                                error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_which_does_not_exist_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name);
-                            }
-                            else if (helper & ExternalEmitHelpers.ClassPrivateFieldGet) {
-                                if (!some(getSignaturesOfSymbol(symbol), signature => getParameterCount(signature) > 3)) {
-                                    error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_with_2_parameters_which_is_not_compatible_with_the_one_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name, 4);
+                            for (const name of getHelperNames(helper)) {
+                                if (requestedExternalEmitHelperNames.has(name)) continue;
+                                requestedExternalEmitHelperNames.add(name);
+
+                                const symbol = getSymbol(helpersModule.exports!, escapeLeadingUnderscores(name), SymbolFlags.Value);
+                                if (!symbol) {
+                                    error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_which_does_not_exist_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name);
                                 }
-                            }
-                            else if (helper & ExternalEmitHelpers.ClassPrivateFieldSet) {
-                                if (!some(getSignaturesOfSymbol(symbol), signature => getParameterCount(signature) > 4)) {
-                                    error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_with_2_parameters_which_is_not_compatible_with_the_one_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name, 5);
+                                else if (helper & ExternalEmitHelpers.ClassPrivateFieldGet) {
+                                    if (!some(getSignaturesOfSymbol(symbol), signature => getParameterCount(signature) > 3)) {
+                                        error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_with_2_parameters_which_is_not_compatible_with_the_one_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name, 4);
+                                    }
                                 }
-                            }
-                            else if (helper & ExternalEmitHelpers.SpreadArray) {
-                                if (!some(getSignaturesOfSymbol(symbol), signature => getParameterCount(signature) > 2)) {
-                                    error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_with_2_parameters_which_is_not_compatible_with_the_one_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name, 3);
+                                else if (helper & ExternalEmitHelpers.ClassPrivateFieldSet) {
+                                    if (!some(getSignaturesOfSymbol(symbol), signature => getParameterCount(signature) > 4)) {
+                                        error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_with_2_parameters_which_is_not_compatible_with_the_one_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name, 5);
+                                    }
+                                }
+                                else if (helper & ExternalEmitHelpers.SpreadArray) {
+                                    if (!some(getSignaturesOfSymbol(symbol), signature => getParameterCount(signature) > 2)) {
+                                        error(location, Diagnostics.This_syntax_requires_an_imported_helper_named_1_with_2_parameters_which_is_not_compatible_with_the_one_in_0_Consider_upgrading_your_version_of_0, externalHelpersModuleNameText, name, 3);
+                                    }
                                 }
                             }
                         }
@@ -45620,31 +46234,33 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         }
     }
 
-    function getHelperName(helper: ExternalEmitHelpers) {
+    function getHelperNames(helper: ExternalEmitHelpers) {
         switch (helper) {
-            case ExternalEmitHelpers.Extends: return "__extends";
-            case ExternalEmitHelpers.Assign: return "__assign";
-            case ExternalEmitHelpers.Rest: return "__rest";
-            case ExternalEmitHelpers.Decorate: return "__decorate";
-            case ExternalEmitHelpers.Metadata: return "__metadata";
-            case ExternalEmitHelpers.Param: return "__param";
-            case ExternalEmitHelpers.Awaiter: return "__awaiter";
-            case ExternalEmitHelpers.Generator: return "__generator";
-            case ExternalEmitHelpers.Values: return "__values";
-            case ExternalEmitHelpers.Read: return "__read";
-            case ExternalEmitHelpers.SpreadArray: return "__spreadArray";
-            case ExternalEmitHelpers.Await: return "__await";
-            case ExternalEmitHelpers.AsyncGenerator: return "__asyncGenerator";
-            case ExternalEmitHelpers.AsyncDelegator: return "__asyncDelegator";
-            case ExternalEmitHelpers.AsyncValues: return "__asyncValues";
-            case ExternalEmitHelpers.ExportStar: return "__exportStar";
-            case ExternalEmitHelpers.ImportStar: return "__importStar";
-            case ExternalEmitHelpers.ImportDefault: return "__importDefault";
-            case ExternalEmitHelpers.MakeTemplateObject: return "__makeTemplateObject";
-            case ExternalEmitHelpers.ClassPrivateFieldGet: return "__classPrivateFieldGet";
-            case ExternalEmitHelpers.ClassPrivateFieldSet: return "__classPrivateFieldSet";
-            case ExternalEmitHelpers.ClassPrivateFieldIn: return "__classPrivateFieldIn";
-            case ExternalEmitHelpers.CreateBinding: return "__createBinding";
+            case ExternalEmitHelpers.Extends: return ["__extends"];
+            case ExternalEmitHelpers.Assign: return ["__assign"];
+            case ExternalEmitHelpers.Rest: return ["__rest"];
+            case ExternalEmitHelpers.Decorate: return legacyDecorators ? ["__decorate"] : ["__esDecorate", "__runInitializers"];
+            case ExternalEmitHelpers.Metadata: return ["__metadata"];
+            case ExternalEmitHelpers.Param: return ["__param"];
+            case ExternalEmitHelpers.Awaiter: return ["__awaiter"];
+            case ExternalEmitHelpers.Generator: return ["__generator"];
+            case ExternalEmitHelpers.Values: return ["__values"];
+            case ExternalEmitHelpers.Read: return ["__read"];
+            case ExternalEmitHelpers.SpreadArray: return ["__spreadArray"];
+            case ExternalEmitHelpers.Await: return ["__await"];
+            case ExternalEmitHelpers.AsyncGenerator: return ["__asyncGenerator"];
+            case ExternalEmitHelpers.AsyncDelegator: return ["__asyncDelegator"];
+            case ExternalEmitHelpers.AsyncValues: return ["__asyncValues"];
+            case ExternalEmitHelpers.ExportStar: return ["__exportStar"];
+            case ExternalEmitHelpers.ImportStar: return ["__importStar"];
+            case ExternalEmitHelpers.ImportDefault: return ["__importDefault"];
+            case ExternalEmitHelpers.MakeTemplateObject: return ["__makeTemplateObject"];
+            case ExternalEmitHelpers.ClassPrivateFieldGet: return ["__classPrivateFieldGet"];
+            case ExternalEmitHelpers.ClassPrivateFieldSet: return ["__classPrivateFieldSet"];
+            case ExternalEmitHelpers.ClassPrivateFieldIn: return ["__classPrivateFieldIn"];
+            case ExternalEmitHelpers.CreateBinding: return ["__createBinding"];
+            case ExternalEmitHelpers.SetFunctionName: return ["__setFunctionName"];
+            case ExternalEmitHelpers.PropKey: return ["__propKey"];
             default: return Debug.fail("Unrecognized helper");
         }
     }
@@ -45657,320 +46273,326 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     }
 
     // GRAMMAR CHECKING
-    function checkGrammarDecoratorsAndModifiers(node: HasModifiers | HasDecorators | HasIllegalModifiers | HasIllegalDecorators): boolean {
-        return checkGrammarDecorators(node) || checkGrammarModifiers(node);
-    }
-
-    function checkGrammarDecorators(node: Node): boolean {
-        if (canHaveIllegalDecorators(node) && some(node.illegalDecorators)) {
-            return grammarErrorOnFirstToken(node, Diagnostics.Decorators_are_not_valid_here);
-        }
-        if (!canHaveDecorators(node) || !hasDecorators(node)) {
-            return false;
-        }
-        if (!nodeCanBeDecorated(node, node.parent, node.parent.parent)) {
-            if (node.kind === SyntaxKind.MethodDeclaration && !nodeIsPresent(node.body)) {
-                return grammarErrorOnFirstToken(node, Diagnostics.A_decorator_can_only_decorate_a_method_implementation_not_an_overload);
-            }
-            else {
-                return grammarErrorOnFirstToken(node, Diagnostics.Decorators_are_not_valid_here);
-            }
-        }
-        else if (node.kind === SyntaxKind.GetAccessor || node.kind === SyntaxKind.SetAccessor) {
-            const accessors = getAllAccessorDeclarations((node.parent as ClassDeclaration).members, node as AccessorDeclaration);
-            if (hasDecorators(accessors.firstAccessor) && node === accessors.secondAccessor) {
-                return grammarErrorOnFirstToken(node, Diagnostics.Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name);
-            }
-        }
-        return false;
-    }
 
-    function checkGrammarModifiers(node: HasModifiers | HasIllegalModifiers): boolean {
-        const quickResult = reportObviousModifierErrors(node);
+    function checkGrammarModifiers(node: HasModifiers | HasDecorators | HasIllegalModifiers | HasIllegalDecorators): boolean {
+        const quickResult = reportObviousDecoratorErrors(node) || reportObviousModifierErrors(node);
         if (quickResult !== undefined) {
             return quickResult;
         }
 
-        let lastStatic: Node | undefined, lastDeclare: Node | undefined, lastAsync: Node | undefined, lastOverride: Node | undefined;
+        if (isParameter(node) && parameterIsThisKeyword(node)) {
+            return grammarErrorOnFirstToken(node, Diagnostics.Neither_decorators_nor_modifiers_may_be_applied_to_this_parameters);
+        }
+
+        let lastStatic: Node | undefined, lastDeclare: Node | undefined, lastAsync: Node | undefined, lastOverride: Node | undefined, firstDecorator: Decorator | undefined;
         let flags = ModifierFlags.None;
-        for (const modifier of node.modifiers!) {
-            if (isDecorator(modifier)) continue;
-            if (modifier.kind !== SyntaxKind.ReadonlyKeyword) {
-                if (node.kind === SyntaxKind.PropertySignature || node.kind === SyntaxKind.MethodSignature) {
-                    return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_type_member, tokenToString(modifier.kind));
+        let sawExportBeforeDecorators = false;
+        for (const modifier of (node as HasModifiers).modifiers!) {
+            if (isDecorator(modifier)) {
+                if (!nodeCanBeDecorated(legacyDecorators, node, node.parent, node.parent.parent)) {
+                    if (node.kind === SyntaxKind.MethodDeclaration && !nodeIsPresent(node.body)) {
+                        return grammarErrorOnFirstToken(node, Diagnostics.A_decorator_can_only_decorate_a_method_implementation_not_an_overload);
+                    }
+                    else {
+                        return grammarErrorOnFirstToken(node, Diagnostics.Decorators_are_not_valid_here);
+                    }
                 }
-                if (node.kind === SyntaxKind.IndexSignature && (modifier.kind !== SyntaxKind.StaticKeyword || !isClassLike(node.parent))) {
-                    return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_an_index_signature, tokenToString(modifier.kind));
+                else if (legacyDecorators && (node.kind === SyntaxKind.GetAccessor || node.kind === SyntaxKind.SetAccessor)) {
+                    const accessors = getAllAccessorDeclarations((node.parent as ClassDeclaration).members, node as AccessorDeclaration);
+                    if (hasDecorators(accessors.firstAccessor) && node === accessors.secondAccessor) {
+                        return grammarErrorOnFirstToken(node, Diagnostics.Decorators_cannot_be_applied_to_multiple_get_Slashset_accessors_of_the_same_name);
+                    }
                 }
-            }
-            if (modifier.kind !== SyntaxKind.InKeyword && modifier.kind !== SyntaxKind.OutKeyword && modifier.kind !== SyntaxKind.ConstKeyword) {
-                if (node.kind === SyntaxKind.TypeParameter) {
-                    return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_type_parameter, tokenToString(modifier.kind));
+                if (flags & ~(ModifierFlags.ExportDefault | ModifierFlags.Decorator)) {
+                    return grammarErrorOnNode(modifier, Diagnostics.Decorators_are_not_valid_here);
                 }
+                flags |= ModifierFlags.Decorator;
+                if (flags & ModifierFlags.Export) {
+                    sawExportBeforeDecorators = true;
+                }
+                firstDecorator ??= modifier;
             }
-            switch (modifier.kind) {
-                case SyntaxKind.ConstKeyword:
-                    if (node.kind !== SyntaxKind.EnumDeclaration && node.kind !== SyntaxKind.TypeParameter) {
-                        return grammarErrorOnNode(node, Diagnostics.A_class_member_cannot_have_the_0_keyword, tokenToString(SyntaxKind.ConstKeyword));
-                    }
-                    const parent = node.parent;
-                    if (node.kind === SyntaxKind.TypeParameter && !(isFunctionLikeDeclaration(parent) || isClassLike(parent) || isFunctionTypeNode(parent) ||
-                        isConstructorTypeNode(parent) || isCallSignatureDeclaration(parent) || isConstructSignatureDeclaration(parent) || isMethodSignature(parent))) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_can_only_appear_on_a_type_parameter_of_a_function_method_or_class, tokenToString(modifier.kind));
-                    }
-                    break;
-                case SyntaxKind.OverrideKeyword:
-                    // If node.kind === SyntaxKind.Parameter, checkParameter reports an error if it's not a parameter property.
-                    if (flags & ModifierFlags.Override) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "override");
-                    }
-                    else if (flags & ModifierFlags.Ambient) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "override", "declare");
-                    }
-                    else if (flags & ModifierFlags.Readonly) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "override", "readonly");
+            else {
+                if (modifier.kind !== SyntaxKind.ReadonlyKeyword) {
+                    if (node.kind === SyntaxKind.PropertySignature || node.kind === SyntaxKind.MethodSignature) {
+                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_type_member, tokenToString(modifier.kind));
                     }
-                    else if (flags & ModifierFlags.Accessor) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "override", "accessor");
+                    if (node.kind === SyntaxKind.IndexSignature && (modifier.kind !== SyntaxKind.StaticKeyword || !isClassLike(node.parent))) {
+                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_an_index_signature, tokenToString(modifier.kind));
                     }
-                    else if (flags & ModifierFlags.Async) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "override", "async");
+                }
+                if (modifier.kind !== SyntaxKind.InKeyword && modifier.kind !== SyntaxKind.OutKeyword && modifier.kind !== SyntaxKind.ConstKeyword) {
+                    if (node.kind === SyntaxKind.TypeParameter) {
+                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_type_parameter, tokenToString(modifier.kind));
                     }
-                    flags |= ModifierFlags.Override;
-                    lastOverride = modifier;
-                    break;
+                }
+                switch (modifier.kind) {
+                    case SyntaxKind.ConstKeyword:
+                        if (node.kind !== SyntaxKind.EnumDeclaration && node.kind !== SyntaxKind.TypeParameter) {
+                            return grammarErrorOnNode(node, Diagnostics.A_class_member_cannot_have_the_0_keyword, tokenToString(SyntaxKind.ConstKeyword));
+                        }
+                        const parent = node.parent;
+                        if (node.kind === SyntaxKind.TypeParameter && !(isFunctionLikeDeclaration(parent) || isClassLike(parent) || isFunctionTypeNode(parent) ||
+                            isConstructorTypeNode(parent) || isCallSignatureDeclaration(parent) || isConstructSignatureDeclaration(parent) || isMethodSignature(parent))) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_can_only_appear_on_a_type_parameter_of_a_function_method_or_class, tokenToString(modifier.kind));
+                        }
+                        break;
+                    case SyntaxKind.OverrideKeyword:
+                        // If node.kind === SyntaxKind.Parameter, checkParameter reports an error if it's not a parameter property.
+                        if (flags & ModifierFlags.Override) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "override");
+                        }
+                        else if (flags & ModifierFlags.Ambient) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "override", "declare");
+                        }
+                        else if (flags & ModifierFlags.Readonly) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "override", "readonly");
+                        }
+                        else if (flags & ModifierFlags.Accessor) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "override", "accessor");
+                        }
+                        else if (flags & ModifierFlags.Async) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "override", "async");
+                        }
+                        flags |= ModifierFlags.Override;
+                        lastOverride = modifier;
+                        break;
 
-                case SyntaxKind.PublicKeyword:
-                case SyntaxKind.ProtectedKeyword:
-                case SyntaxKind.PrivateKeyword:
-                    const text = visibilityToString(modifierToFlag(modifier.kind));
+                    case SyntaxKind.PublicKeyword:
+                    case SyntaxKind.ProtectedKeyword:
+                    case SyntaxKind.PrivateKeyword:
+                        const text = visibilityToString(modifierToFlag(modifier.kind));
 
-                    if (flags & ModifierFlags.AccessibilityModifier) {
-                        return grammarErrorOnNode(modifier, Diagnostics.Accessibility_modifier_already_seen);
-                    }
-                    else if (flags & ModifierFlags.Override) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "override");
-                    }
-                    else if (flags & ModifierFlags.Static) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "static");
-                    }
-                    else if (flags & ModifierFlags.Accessor) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "accessor");
-                    }
-                    else if (flags & ModifierFlags.Readonly) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "readonly");
-                    }
-                    else if (flags & ModifierFlags.Async) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "async");
-                    }
-                    else if (node.parent.kind === SyntaxKind.ModuleBlock || node.parent.kind === SyntaxKind.SourceFile) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, text);
-                    }
-                    else if (flags & ModifierFlags.Abstract) {
-                        if (modifier.kind === SyntaxKind.PrivateKeyword) {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, text, "abstract");
+                        if (flags & ModifierFlags.AccessibilityModifier) {
+                            return grammarErrorOnNode(modifier, Diagnostics.Accessibility_modifier_already_seen);
                         }
-                        else {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "abstract");
+                        else if (flags & ModifierFlags.Override) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "override");
                         }
-                    }
-                    else if (isPrivateIdentifierClassElementDeclaration(node)) {
-                        return grammarErrorOnNode(modifier, Diagnostics.An_accessibility_modifier_cannot_be_used_with_a_private_identifier);
-                    }
-                    flags |= modifierToFlag(modifier.kind);
-                    break;
-
-                case SyntaxKind.StaticKeyword:
-                    if (flags & ModifierFlags.Static) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "static");
-                    }
-                    else if (flags & ModifierFlags.Readonly) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "readonly");
-                    }
-                    else if (flags & ModifierFlags.Async) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "async");
-                    }
-                    else if (flags & ModifierFlags.Accessor) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "accessor");
-                    }
-                    else if (node.parent.kind === SyntaxKind.ModuleBlock || node.parent.kind === SyntaxKind.SourceFile) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, "static");
-                    }
-                    else if (node.kind === SyntaxKind.Parameter) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "static");
-                    }
-                    else if (flags & ModifierFlags.Abstract) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract");
-                    }
-                    else if (flags & ModifierFlags.Override) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "override");
-                    }
-                    flags |= ModifierFlags.Static;
-                    lastStatic = modifier;
-                    break;
+                        else if (flags & ModifierFlags.Static) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "static");
+                        }
+                        else if (flags & ModifierFlags.Accessor) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "accessor");
+                        }
+                        else if (flags & ModifierFlags.Readonly) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "readonly");
+                        }
+                        else if (flags & ModifierFlags.Async) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "async");
+                        }
+                        else if (node.parent.kind === SyntaxKind.ModuleBlock || node.parent.kind === SyntaxKind.SourceFile) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, text);
+                        }
+                        else if (flags & ModifierFlags.Abstract) {
+                            if (modifier.kind === SyntaxKind.PrivateKeyword) {
+                                return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, text, "abstract");
+                            }
+                            else {
+                                return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "abstract");
+                            }
+                        }
+                        else if (isPrivateIdentifierClassElementDeclaration(node)) {
+                            return grammarErrorOnNode(modifier, Diagnostics.An_accessibility_modifier_cannot_be_used_with_a_private_identifier);
+                        }
+                        flags |= modifierToFlag(modifier.kind);
+                        break;
 
-                case SyntaxKind.AccessorKeyword:
-                    if (flags & ModifierFlags.Accessor) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "accessor");
-                    }
-                    else if (flags & ModifierFlags.Readonly) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "accessor", "readonly");
-                    }
-                    else if (flags & ModifierFlags.Ambient) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "accessor", "declare");
-                    }
-                    else if (node.kind !== SyntaxKind.PropertyDeclaration) {
-                        return grammarErrorOnNode(modifier, Diagnostics.accessor_modifier_can_only_appear_on_a_property_declaration);
-                    }
+                    case SyntaxKind.StaticKeyword:
+                        if (flags & ModifierFlags.Static) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "static");
+                        }
+                        else if (flags & ModifierFlags.Readonly) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "readonly");
+                        }
+                        else if (flags & ModifierFlags.Async) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "async");
+                        }
+                        else if (flags & ModifierFlags.Accessor) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "accessor");
+                        }
+                        else if (node.parent.kind === SyntaxKind.ModuleBlock || node.parent.kind === SyntaxKind.SourceFile) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, "static");
+                        }
+                        else if (node.kind === SyntaxKind.Parameter) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "static");
+                        }
+                        else if (flags & ModifierFlags.Abstract) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract");
+                        }
+                        else if (flags & ModifierFlags.Override) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "override");
+                        }
+                        flags |= ModifierFlags.Static;
+                        lastStatic = modifier;
+                        break;
 
-                    flags |= ModifierFlags.Accessor;
-                    break;
+                    case SyntaxKind.AccessorKeyword:
+                        if (flags & ModifierFlags.Accessor) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "accessor");
+                        }
+                        else if (flags & ModifierFlags.Readonly) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "accessor", "readonly");
+                        }
+                        else if (flags & ModifierFlags.Ambient) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "accessor", "declare");
+                        }
+                        else if (node.kind !== SyntaxKind.PropertyDeclaration) {
+                            return grammarErrorOnNode(modifier, Diagnostics.accessor_modifier_can_only_appear_on_a_property_declaration);
+                        }
 
-                case SyntaxKind.ReadonlyKeyword:
-                    if (flags & ModifierFlags.Readonly) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "readonly");
-                    }
-                    else if (node.kind !== SyntaxKind.PropertyDeclaration && node.kind !== SyntaxKind.PropertySignature && node.kind !== SyntaxKind.IndexSignature && node.kind !== SyntaxKind.Parameter) {
-                        // If node.kind === SyntaxKind.Parameter, checkParameter reports an error if it's not a parameter property.
-                        return grammarErrorOnNode(modifier, Diagnostics.readonly_modifier_can_only_appear_on_a_property_declaration_or_index_signature);
-                    }
-                    else if (flags & ModifierFlags.Accessor) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "readonly", "accessor");
-                    }
-                    flags |= ModifierFlags.Readonly;
-                    break;
+                        flags |= ModifierFlags.Accessor;
+                        break;
 
-                case SyntaxKind.ExportKeyword:
-                    if (flags & ModifierFlags.Export) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "export");
-                    }
-                    else if (flags & ModifierFlags.Ambient) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "declare");
-                    }
-                    else if (flags & ModifierFlags.Abstract) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "abstract");
-                    }
-                    else if (flags & ModifierFlags.Async) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "async");
-                    }
-                    else if (isClassLike(node.parent)) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_class_elements_of_this_kind, "export");
-                    }
-                    else if (node.kind === SyntaxKind.Parameter) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "export");
-                    }
-                    flags |= ModifierFlags.Export;
-                    break;
-                case SyntaxKind.DefaultKeyword:
-                    const container = node.parent.kind === SyntaxKind.SourceFile ? node.parent : node.parent.parent;
-                    if (container.kind === SyntaxKind.ModuleDeclaration && !isAmbientModule(container)) {
-                        return grammarErrorOnNode(modifier, Diagnostics.A_default_export_can_only_be_used_in_an_ECMAScript_style_module);
-                    }
-                    else if (!(flags & ModifierFlags.Export)) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "default");
-                    }
+                    case SyntaxKind.ReadonlyKeyword:
+                        if (flags & ModifierFlags.Readonly) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "readonly");
+                        }
+                        else if (node.kind !== SyntaxKind.PropertyDeclaration && node.kind !== SyntaxKind.PropertySignature && node.kind !== SyntaxKind.IndexSignature && node.kind !== SyntaxKind.Parameter) {
+                            // If node.kind === SyntaxKind.Parameter, checkParameter reports an error if it's not a parameter property.
+                            return grammarErrorOnNode(modifier, Diagnostics.readonly_modifier_can_only_appear_on_a_property_declaration_or_index_signature);
+                        }
+                        else if (flags & ModifierFlags.Accessor) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "readonly", "accessor");
+                        }
+                        flags |= ModifierFlags.Readonly;
+                        break;
 
-                    flags |= ModifierFlags.Default;
-                    break;
-                case SyntaxKind.DeclareKeyword:
-                    if (flags & ModifierFlags.Ambient) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "declare");
-                    }
-                    else if (flags & ModifierFlags.Async) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async");
-                    }
-                    else if (flags & ModifierFlags.Override) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "override");
-                    }
-                    else if (isClassLike(node.parent) && !isPropertyDeclaration(node)) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_class_elements_of_this_kind, "declare");
-                    }
-                    else if (node.kind === SyntaxKind.Parameter) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "declare");
-                    }
-                    else if ((node.parent.flags & NodeFlags.Ambient) && node.parent.kind === SyntaxKind.ModuleBlock) {
-                        return grammarErrorOnNode(modifier, Diagnostics.A_declare_modifier_cannot_be_used_in_an_already_ambient_context);
-                    }
-                    else if (isPrivateIdentifierClassElementDeclaration(node)) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_a_private_identifier, "declare");
-                    }
-                    else if (flags & ModifierFlags.Accessor) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "declare", "accessor");
-                    }
-                    flags |= ModifierFlags.Ambient;
-                    lastDeclare = modifier;
-                    break;
+                    case SyntaxKind.ExportKeyword:
+                        if (flags & ModifierFlags.Export) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "export");
+                        }
+                        else if (flags & ModifierFlags.Ambient) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "declare");
+                        }
+                        else if (flags & ModifierFlags.Abstract) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "abstract");
+                        }
+                        else if (flags & ModifierFlags.Async) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "async");
+                        }
+                        else if (isClassLike(node.parent)) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_class_elements_of_this_kind, "export");
+                        }
+                        else if (node.kind === SyntaxKind.Parameter) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "export");
+                        }
+                        flags |= ModifierFlags.Export;
+                        break;
+                    case SyntaxKind.DefaultKeyword:
+                        const container = node.parent.kind === SyntaxKind.SourceFile ? node.parent : node.parent.parent;
+                        if (container.kind === SyntaxKind.ModuleDeclaration && !isAmbientModule(container)) {
+                            return grammarErrorOnNode(modifier, Diagnostics.A_default_export_can_only_be_used_in_an_ECMAScript_style_module);
+                        }
+                        else if (!(flags & ModifierFlags.Export)) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "export", "default");
+                        }
+                        else if (sawExportBeforeDecorators) {
+                            return grammarErrorOnNode(firstDecorator!, Diagnostics.Decorators_are_not_valid_here);
+                        }
 
-                case SyntaxKind.AbstractKeyword:
-                    if (flags & ModifierFlags.Abstract) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "abstract");
-                    }
-                    if (node.kind !== SyntaxKind.ClassDeclaration &&
-                        node.kind !== SyntaxKind.ConstructorType) {
-                        if (node.kind !== SyntaxKind.MethodDeclaration &&
-                            node.kind !== SyntaxKind.PropertyDeclaration &&
-                            node.kind !== SyntaxKind.GetAccessor &&
-                            node.kind !== SyntaxKind.SetAccessor) {
-                            return grammarErrorOnNode(modifier, Diagnostics.abstract_modifier_can_only_appear_on_a_class_method_or_property_declaration);
+                        flags |= ModifierFlags.Default;
+                        break;
+                    case SyntaxKind.DeclareKeyword:
+                        if (flags & ModifierFlags.Ambient) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "declare");
                         }
-                        if (!(node.parent.kind === SyntaxKind.ClassDeclaration && hasSyntacticModifier(node.parent, ModifierFlags.Abstract))) {
-                            return grammarErrorOnNode(modifier, Diagnostics.Abstract_methods_can_only_appear_within_an_abstract_class);
+                        else if (flags & ModifierFlags.Async) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async");
                         }
-                        if (flags & ModifierFlags.Static) {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract");
+                        else if (flags & ModifierFlags.Override) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "override");
                         }
-                        if (flags & ModifierFlags.Private) {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "private", "abstract");
+                        else if (isClassLike(node.parent) && !isPropertyDeclaration(node)) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_class_elements_of_this_kind, "declare");
                         }
-                        if (flags & ModifierFlags.Async && lastAsync) {
-                            return grammarErrorOnNode(lastAsync, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "async", "abstract");
+                        else if (node.kind === SyntaxKind.Parameter) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "declare");
                         }
-                        if (flags & ModifierFlags.Override) {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "abstract", "override");
+                        else if ((node.parent.flags & NodeFlags.Ambient) && node.parent.kind === SyntaxKind.ModuleBlock) {
+                            return grammarErrorOnNode(modifier, Diagnostics.A_declare_modifier_cannot_be_used_in_an_already_ambient_context);
                         }
-                        if (flags & ModifierFlags.Accessor) {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "abstract", "accessor");
+                        else if (isPrivateIdentifierClassElementDeclaration(node)) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_a_private_identifier, "declare");
                         }
-                    }
-                    if (isNamedDeclaration(node) && node.name.kind === SyntaxKind.PrivateIdentifier) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_a_private_identifier, "abstract");
-                    }
+                        else if (flags & ModifierFlags.Accessor) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "declare", "accessor");
+                        }
+                        flags |= ModifierFlags.Ambient;
+                        lastDeclare = modifier;
+                        break;
 
-                    flags |= ModifierFlags.Abstract;
-                    break;
+                    case SyntaxKind.AbstractKeyword:
+                        if (flags & ModifierFlags.Abstract) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "abstract");
+                        }
+                        if (node.kind !== SyntaxKind.ClassDeclaration &&
+                            node.kind !== SyntaxKind.ConstructorType) {
+                            if (node.kind !== SyntaxKind.MethodDeclaration &&
+                                node.kind !== SyntaxKind.PropertyDeclaration &&
+                                node.kind !== SyntaxKind.GetAccessor &&
+                                node.kind !== SyntaxKind.SetAccessor) {
+                                return grammarErrorOnNode(modifier, Diagnostics.abstract_modifier_can_only_appear_on_a_class_method_or_property_declaration);
+                            }
+                            if (!(node.parent.kind === SyntaxKind.ClassDeclaration && hasSyntacticModifier(node.parent, ModifierFlags.Abstract))) {
+                                return grammarErrorOnNode(modifier, Diagnostics.Abstract_methods_can_only_appear_within_an_abstract_class);
+                            }
+                            if (flags & ModifierFlags.Static) {
+                                return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "static", "abstract");
+                            }
+                            if (flags & ModifierFlags.Private) {
+                                return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "private", "abstract");
+                            }
+                            if (flags & ModifierFlags.Async && lastAsync) {
+                                return grammarErrorOnNode(lastAsync, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "async", "abstract");
+                            }
+                            if (flags & ModifierFlags.Override) {
+                                return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "abstract", "override");
+                            }
+                            if (flags & ModifierFlags.Accessor) {
+                                return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "abstract", "accessor");
+                            }
+                        }
+                        if (isNamedDeclaration(node) && node.name.kind === SyntaxKind.PrivateIdentifier) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_a_private_identifier, "abstract");
+                        }
 
-                case SyntaxKind.AsyncKeyword:
-                    if (flags & ModifierFlags.Async) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "async");
-                    }
-                    else if (flags & ModifierFlags.Ambient || node.parent.flags & NodeFlags.Ambient) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async");
-                    }
-                    else if (node.kind === SyntaxKind.Parameter) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "async");
-                    }
-                    if (flags & ModifierFlags.Abstract) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "async", "abstract");
-                    }
-                    flags |= ModifierFlags.Async;
-                    lastAsync = modifier;
-                    break;
+                        flags |= ModifierFlags.Abstract;
+                        break;
 
-                case SyntaxKind.InKeyword:
-                case SyntaxKind.OutKeyword:
-                    const inOutFlag = modifier.kind === SyntaxKind.InKeyword ? ModifierFlags.In : ModifierFlags.Out;
-                    const inOutText = modifier.kind === SyntaxKind.InKeyword ? "in" : "out";
-                    if (node.kind !== SyntaxKind.TypeParameter || !(isInterfaceDeclaration(node.parent) || isClassLike(node.parent) || isTypeAliasDeclaration(node.parent))) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_can_only_appear_on_a_type_parameter_of_a_class_interface_or_type_alias, inOutText);
-                    }
-                    if (flags & inOutFlag) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, inOutText);
-                    }
-                    if (inOutFlag & ModifierFlags.In && flags & ModifierFlags.Out) {
-                        return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "in", "out");
-                    }
-                    flags |= inOutFlag;
-                    break;
+                    case SyntaxKind.AsyncKeyword:
+                        if (flags & ModifierFlags.Async) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, "async");
+                        }
+                        else if (flags & ModifierFlags.Ambient || node.parent.flags & NodeFlags.Ambient) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_in_an_ambient_context, "async");
+                        }
+                        else if (node.kind === SyntaxKind.Parameter) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "async");
+                        }
+                        if (flags & ModifierFlags.Abstract) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_be_used_with_1_modifier, "async", "abstract");
+                        }
+                        flags |= ModifierFlags.Async;
+                        lastAsync = modifier;
+                        break;
+
+                    case SyntaxKind.InKeyword:
+                    case SyntaxKind.OutKeyword:
+                        const inOutFlag = modifier.kind === SyntaxKind.InKeyword ? ModifierFlags.In : ModifierFlags.Out;
+                        const inOutText = modifier.kind === SyntaxKind.InKeyword ? "in" : "out";
+                        if (node.kind !== SyntaxKind.TypeParameter || !(isInterfaceDeclaration(node.parent) || isClassLike(node.parent) || isTypeAliasDeclaration(node.parent))) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_can_only_appear_on_a_type_parameter_of_a_class_interface_or_type_alias, inOutText);
+                        }
+                        if (flags & inOutFlag) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_already_seen, inOutText);
+                        }
+                        if (inOutFlag & ModifierFlags.In && flags & ModifierFlags.Out) {
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "in", "out");
+                        }
+                        flags |= inOutFlag;
+                        break;
+                }
             }
         }
 
@@ -46006,14 +46628,18 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
      * undefined: Need to do full checking on the modifiers.
      */
     function reportObviousModifierErrors(node: HasModifiers | HasIllegalModifiers): boolean | undefined {
-        return !node.modifiers
-            ? false
-            : shouldReportBadModifier(node)
-                ? grammarErrorOnFirstToken(node, Diagnostics.Modifiers_cannot_appear_here)
-                : undefined;
+        if (!node.modifiers) return false;
+
+        const modifier = findFirstIllegalModifier(node);
+        return modifier && grammarErrorOnFirstToken(modifier, Diagnostics.Modifiers_cannot_appear_here);
     }
 
-    function shouldReportBadModifier(node: HasModifiers | HasIllegalModifiers): boolean {
+    function findFirstModifierExcept(node: HasModifiers, allowedModifier: SyntaxKind): Modifier | undefined {
+            const modifier = find(node.modifiers, isModifier);
+            return modifier && modifier.kind !== allowedModifier ? modifier : undefined;
+        }
+
+    function findFirstIllegalModifier(node: HasModifiers | HasIllegalModifiers): Modifier | undefined {
         switch (node.kind) {
             case SyntaxKind.GetAccessor:
             case SyntaxKind.SetAccessor:
@@ -46032,43 +46658,44 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             case SyntaxKind.ArrowFunction:
             case SyntaxKind.Parameter:
             case SyntaxKind.TypeParameter:
-                return false;
+                return undefined;
             case SyntaxKind.ClassStaticBlockDeclaration:
             case SyntaxKind.PropertyAssignment:
             case SyntaxKind.ShorthandPropertyAssignment:
             case SyntaxKind.NamespaceExportDeclaration:
             case SyntaxKind.FunctionType:
             case SyntaxKind.MissingDeclaration:
-                return true;
+                return find(node.modifiers, isModifier);
             default:
                 if (node.parent.kind === SyntaxKind.ModuleBlock || node.parent.kind === SyntaxKind.SourceFile) {
-                    return false;
+                    return undefined;
                 }
                 switch (node.kind) {
                     case SyntaxKind.FunctionDeclaration:
-                        return nodeHasAnyModifiersExcept(node, SyntaxKind.AsyncKeyword);
+                        return findFirstModifierExcept(node, SyntaxKind.AsyncKeyword);
                     case SyntaxKind.ClassDeclaration:
                     case SyntaxKind.ConstructorType:
-                        return nodeHasAnyModifiersExcept(node, SyntaxKind.AbstractKeyword);
+                        return findFirstModifierExcept(node, SyntaxKind.AbstractKeyword);
                     case SyntaxKind.ClassExpression:
                     case SyntaxKind.InterfaceDeclaration:
                     case SyntaxKind.VariableStatement:
                     case SyntaxKind.TypeAliasDeclaration:
-                        return true;
+                        return find(node.modifiers, isModifier);
                     case SyntaxKind.EnumDeclaration:
-                        return nodeHasAnyModifiersExcept(node, SyntaxKind.ConstKeyword);
+                        return findFirstModifierExcept(node, SyntaxKind.ConstKeyword);
                     default:
                         Debug.assertNever(node);
                 }
         }
     }
 
-    function nodeHasAnyModifiersExcept(node: HasModifiers, allowedModifier: SyntaxKind): boolean {
-        for (const modifier of node.modifiers!) {
-            if (isDecorator(modifier)) continue;
-            return modifier.kind !== allowedModifier;
-        }
-        return false;
+    function reportObviousDecoratorErrors(node: HasModifiers | HasDecorators | HasIllegalModifiers | HasIllegalDecorators) {
+        const decorator = findFirstIllegalDecorator(node);
+        return decorator && grammarErrorOnFirstToken(decorator, Diagnostics.Decorators_are_not_valid_here);
+    }
+
+    function findFirstIllegalDecorator(node: HasModifiers | HasDecorators | HasIllegalModifiers | HasIllegalDecorators): Decorator | undefined {
+        return canHaveIllegalDecorators(node) ? find(node.modifiers, isDecorator) : undefined;
     }
 
     function checkGrammarAsyncModifier(node: Node, asyncModifier: Node): boolean {
@@ -46164,7 +46791,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     function checkGrammarFunctionLikeDeclaration(node: FunctionLikeDeclaration | MethodSignature): boolean {
         // Prevent cascading error by short-circuit
         const file = getSourceFileOfNode(node);
-        return checkGrammarDecoratorsAndModifiers(node) ||
+        return checkGrammarModifiers(node) ||
             checkGrammarTypeParameterList(node.typeParameters, file) ||
             checkGrammarParameterList(node.parameters) ||
             checkGrammarArrowFunction(node, file) ||
@@ -46235,7 +46862,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkGrammarIndexSignature(node: IndexSignatureDeclaration) {
         // Prevent cascading error by short-circuit
-        return checkGrammarDecoratorsAndModifiers(node) || checkGrammarIndexSignatureParameters(node);
+        return checkGrammarModifiers(node) || checkGrammarIndexSignatureParameters(node);
     }
 
     function checkGrammarForAtLeastOneTypeArgument(node: Node, typeArguments: NodeArray<TypeNode> | undefined): boolean {
@@ -46283,7 +46910,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         let seenExtendsClause = false;
         let seenImplementsClause = false;
 
-        if (!checkGrammarDecoratorsAndModifiers(node) && node.heritageClauses) {
+        if (!checkGrammarModifiers(node) && node.heritageClauses) {
             for (const heritageClause of node.heritageClauses) {
                 if (heritageClause.token === SyntaxKind.ExtendsKeyword) {
                     if (seenExtendsClause) {
@@ -46415,7 +47042,9 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             }
             else if (canHaveIllegalModifiers(prop) && prop.modifiers) {
                 for (const mod of prop.modifiers) {
-                    grammarErrorOnNode(mod, Diagnostics._0_modifier_cannot_be_used_here, getTextOfNode(mod));
+                        if (isModifier(mod)) {
+                        grammarErrorOnNode(mod, Diagnostics._0_modifier_cannot_be_used_here, getTextOfNode(mod));
+                    }
                 }
             }
 
diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index 7d30e47739f64..db2672796ecd6 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -218,7 +218,9 @@ const libEntries: [string, string][] = [
     ["esnext.bigint", "lib.es2020.bigint.d.ts"],
     ["esnext.string", "lib.es2022.string.d.ts"],
     ["esnext.promise", "lib.es2021.promise.d.ts"],
-    ["esnext.weakref", "lib.es2021.weakref.d.ts"]
+    ["esnext.weakref", "lib.es2021.weakref.d.ts"],
+    ["decorators", "lib.decorators.d.ts"],
+    ["decorators.legacy", "lib.decorators.legacy.d.ts"],
 ];
 
 /**
@@ -1157,10 +1159,11 @@ const commandOptionsWithoutBuild: CommandLineOption[] = [
     {
         name: "experimentalDecorators",
         type: "boolean",
+        affectsEmit: true,
         affectsSemanticDiagnostics: true,
         affectsBuildInfo: true,
         category: Diagnostics.Language_and_Environment,
-        description: Diagnostics.Enable_experimental_support_for_TC39_stage_2_draft_decorators,
+        description: Diagnostics.Enable_experimental_support_for_legacy_experimental_decorators,
         defaultValueDescription: false,
     },
     {
diff --git a/src/compiler/core.ts b/src/compiler/core.ts
index f8827baf4df72..636f77ff3c53a 100644
--- a/src/compiler/core.ts
+++ b/src/compiler/core.ts
@@ -1553,6 +1553,22 @@ export function group<T, K>(values: readonly T[], getGroupId: (value: T) => K, r
     return arrayFrom(arrayToMultiMap(values, getGroupId).values(), resultSelector);
 }
 
+/** @internal */
+export function groupBy<T, U extends T>(values: readonly T[] | undefined, keySelector: (value: T) => value is U): { true?: U[], false?: Exclude<T, U>[] };
+/** @internal */
+export function groupBy<T, K extends string | number | boolean | null | undefined>(values: readonly T[] | undefined, keySelector: (value: T) => K): { [P in K as `${P}`]?: T[]; };
+export function groupBy<T, K extends string | number | boolean | null | undefined>(values: readonly T[] | undefined, keySelector: (value: T) => K): { [P in K as `${P}`]?: T[]; } {
+    const result: Record<string, T[]> = {};
+    if (values) {
+        for (const value of values) {
+            const key = `${keySelector(value)}`;
+            const array = result[key] ??= [];
+            array.push(value);
+        }
+    }
+    return result as { [P in K as `${P}`]?: T[]; };
+}
+
 /** @internal */
 export function clone<T>(object: T): T {
     const result: any = {};
@@ -2771,13 +2787,32 @@ export function padRight(s: string, length: number, padString: " " = " ") {
 /** @internal */
 export function takeWhile<T, U extends T>(array: readonly T[], predicate: (element: T) => element is U): U[];
 /** @internal */
-export function takeWhile<T>(array: readonly T[], predicate: (element: T) => boolean): T[] {
-    const len = array.length;
-    let index = 0;
-    while (index < len && predicate(array[index])) {
-        index++;
+export function takeWhile<T, U extends T>(array: readonly T[] | undefined, predicate: (element: T) => element is U): U[] | undefined;
+export function takeWhile<T, U extends T>(array: readonly T[] | undefined, predicate: (element: T) => element is U): U[] | undefined {
+    if (array) {
+        const len = array.length;
+        let index = 0;
+        while (index < len && predicate(array[index])) {
+            index++;
+        }
+        return array.slice(0, index) as U[];
+    }
+}
+
+/** @internal */
+export function skipWhile<T, U extends T>(array: readonly T[], predicate: (element: T) => element is U): Exclude<T, U>[];
+/** @internal */
+export function skipWhile<T, U extends T>(array: readonly T[] | undefined, predicate: (element: T) => element is U): Exclude<T, U>[] | undefined;
+/** @internal */
+export function skipWhile<T, U extends T>(array: readonly T[] | undefined, predicate: (element: T) => element is U): Exclude<T, U>[] | undefined {
+    if (array) {
+        const len = array.length;
+        let index = 0;
+        while (index < len && predicate(array[index])) {
+            index++;
+        }
+        return array.slice(index) as Exclude<T, U>[];
     }
-    return array.slice(0, index);
 }
 
 /**
diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
index f10f21178d994..c917f43521c4e 100644
--- a/src/compiler/diagnosticMessages.json
+++ b/src/compiler/diagnosticMessages.json
@@ -687,10 +687,6 @@
         "category": "Error",
         "code": 1218
     },
-    "Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.": {
-        "category": "Error",
-        "code": 1219
-    },
     "Generators are not allowed in an ambient context.": {
         "category": "Error",
         "code": 1221
@@ -911,6 +907,14 @@
         "category": "Error",
         "code": 1277
     },
+    "The runtime will invoke the decorator with {1} arguments, but the decorator expects {0}.": {
+        "category": "Error",
+        "code": 1278
+    },
+    "The runtime will invoke the decorator with {1} arguments, but the decorator expects at least {0}.": {
+        "category": "Error",
+        "code": 1279
+    },
 
     "'with' statements are not allowed in an async function block.": {
         "category": "Error",
@@ -1388,7 +1392,7 @@
         "category": "Error",
         "code": 1432
     },
-    "Decorators may not be applied to 'this' parameters.": {
+    "Neither decorators nor modifiers may be applied to 'this' parameters.": {
         "category": "Error",
         "code": 1433
     },
@@ -5655,7 +5659,7 @@
         "category": "Message",
         "code": 6629
     },
-    "Enable experimental support for TC39 stage 2 draft decorators.": {
+    "Enable experimental support for legacy experimental decorators.": {
         "category": "Message",
         "code": 6630
     },
@@ -6488,6 +6492,10 @@
         "category": "Error",
         "code": 8037
     },
+    "Decorators must come after 'export' or 'export default' in JavaScript files.": {
+        "category": "Error",
+        "code": 8038
+    },
 
     "Declaration emit for this file requires using private name '{0}'. An explicit type annotation may unblock declaration emit.": {
         "category": "Error",
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index 81b320d9ee0e6..864d679c4d51f 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -149,6 +149,7 @@ import {
     getExternalHelpersModuleName,
     getExternalModuleName,
     getIdentifierTypeArguments,
+    getInternalEmitFlags,
     getLeadingCommentRanges,
     getLineAndCharacterOfPosition,
     getLinesBetweenPositionAndNextNonWhitespaceCharacter,
@@ -199,6 +200,7 @@ import {
     IndexSignatureDeclaration,
     InferTypeNode,
     InterfaceDeclaration,
+    InternalEmitFlags,
     IntersectionTypeNode,
     isAccessExpression,
     isArray,
@@ -314,6 +316,7 @@ import {
     ModuleDeclaration,
     ModuleKind,
     ModuleReference,
+    moveRangePastModifiers,
     NamedDeclaration,
     NamedExports,
     NamedImports,
@@ -1361,6 +1364,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
 
     let currentSourceFile: SourceFile | undefined;
     let nodeIdToGeneratedName: string[]; // Map of generated names for specific nodes.
+    let nodeIdToGeneratedPrivateName: string[]; // Map of generated names for specific nodes.
     let autoGeneratedIdToGeneratedName: string[]; // Map of generated names for temp and loop variables.
     let generatedNames: Set<string>; // Set of names generated by the NameGenerator.
     let formattedNameTempFlagsStack: (Map<string, TempFlags> | undefined)[];
@@ -1655,6 +1659,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
 
     function reset() {
         nodeIdToGeneratedName = [];
+        nodeIdToGeneratedPrivateName = [];
         autoGeneratedIdToGeneratedName = [];
         generatedNames = new Set();
         formattedNameTempFlagsStack = [];
@@ -1705,7 +1710,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function beforeEmitNode(node: Node) {
-        if (preserveSourceNewlines && (getEmitFlags(node) & EmitFlags.IgnoreSourceNewlines)) {
+        if (preserveSourceNewlines && (getInternalEmitFlags(node) & InternalEmitFlags.IgnoreSourceNewlines)) {
             preserveSourceNewlines = false;
         }
     }
@@ -2246,6 +2251,8 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
                     return emitMetaProperty(node as MetaProperty);
                 case SyntaxKind.SyntheticExpression:
                     return Debug.fail("SyntheticExpression should never be printed.");
+                case SyntaxKind.MissingDeclaration:
+                    return;
 
                 // JSX
                 case SyntaxKind.JsxElement:
@@ -2525,7 +2532,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     //
 
     function emitTypeParameter(node: TypeParameterDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitModifierList(node, node.modifiers);
         emit(node.name);
         if (node.constraint) {
             writeSpace();
@@ -2542,7 +2549,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitParameter(node: ParameterDeclaration) {
-        emitDecoratorsAndModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ true);
         emit(node.dotDotDotToken);
         emitNodeWithWriter(node.name, writeParameter);
         emit(node.questionToken);
@@ -2566,7 +2573,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     //
 
     function emitPropertySignature(node: PropertySignature) {
-        emitModifiers(node, node.modifiers);
+        emitModifierList(node, node.modifiers);
         emitNodeWithWriter(node.name, writeProperty);
         emit(node.questionToken);
         emitTypeAnnotation(node.type);
@@ -2574,7 +2581,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitPropertyDeclaration(node: PropertyDeclaration) {
-        emitDecoratorsAndModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ true);
         emit(node.name);
         emit(node.questionToken);
         emit(node.exclamationToken);
@@ -2585,7 +2592,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
 
     function emitMethodSignature(node: MethodSignature) {
         pushNameGenerationScope(node);
-        emitModifiers(node, node.modifiers);
+        emitModifierList(node, node.modifiers);
         emit(node.name);
         emit(node.questionToken);
         emitTypeParameters(node, node.typeParameters);
@@ -2596,7 +2603,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitMethodDeclaration(node: MethodDeclaration) {
-        emitDecoratorsAndModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ true);
         emit(node.asteriskToken);
         emit(node.name);
         emit(node.questionToken);
@@ -2609,14 +2616,15 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitConstructor(node: ConstructorDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         writeKeyword("constructor");
         emitSignatureAndBody(node, emitSignatureHead);
     }
 
     function emitAccessorDeclaration(node: AccessorDeclaration) {
-        emitDecoratorsAndModifiers(node, node.modifiers);
-        writeKeyword(node.kind === SyntaxKind.GetAccessor ? "get" : "set");
+        const pos = emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ true);
+        const token = node.kind === SyntaxKind.GetAccessor ? SyntaxKind.GetKeyword : SyntaxKind.SetKeyword;
+        emitTokenWithComment(token, pos, writeKeyword, node);
         writeSpace();
         emit(node.name);
         emitSignatureAndBody(node, emitSignatureHead);
@@ -2643,7 +2651,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitIndexSignature(node: IndexSignatureDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         emitParametersForIndexSignature(node, node.parameters);
         emitTypeAnnotation(node.type);
         writeTrailingSemicolon();
@@ -2717,7 +2725,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
 
     function emitConstructorType(node: ConstructorTypeNode) {
         pushNameGenerationScope(node);
-        emitModifiers(node, node.modifiers);
+        emitModifierList(node, node.modifiers);
         writeKeyword("new");
         writeSpace();
         emitTypeParameters(node, node.typeParameters);
@@ -3042,7 +3050,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitCallExpression(node: CallExpression) {
-        const indirectCall = getEmitFlags(node) & EmitFlags.IndirectCall;
+        const indirectCall = getInternalEmitFlags(node) & InternalEmitFlags.IndirectCall;
         if (indirectCall) {
             writePunctuation("(");
             writeLiteral("0");
@@ -3067,7 +3075,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitTaggedTemplateExpression(node: TaggedTemplateExpression) {
-        const indirectCall = getEmitFlags(node) & EmitFlags.IndirectCall;
+        const indirectCall = getInternalEmitFlags(node) & InternalEmitFlags.IndirectCall;
         if (indirectCall) {
             writePunctuation("(");
             writeLiteral("0");
@@ -3105,7 +3113,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitArrowFunction(node: ArrowFunction) {
-        emitModifiers(node, node.modifiers);
+        emitModifierList(node, node.modifiers);
         emitSignatureAndBody(node, emitArrowFunctionHead);
     }
 
@@ -3380,7 +3388,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitVariableStatement(node: VariableStatement) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         emit(node.declarationList);
         writeTrailingSemicolon();
     }
@@ -3661,7 +3669,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitFunctionDeclarationOrExpression(node: FunctionDeclaration | FunctionExpression) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         writeKeyword("function");
         emit(node.asteriskToken);
         writeSpace();
@@ -3792,8 +3800,8 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
 
         forEach(node.members, generateMemberNames);
 
-        emitDecoratorsAndModifiers(node, node.modifiers);
-        writeKeyword("class");
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ true);
+        emitTokenWithComment(SyntaxKind.ClassKeyword, moveRangePastModifiers(node).pos, writeKeyword, node);
         if (node.name) {
             writeSpace();
             emitIdentifierName(node.name);
@@ -3824,7 +3832,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
         // we can step out of it when emitting a computed property.
         pushPrivateNameGenerationScope(TempFlags.Auto, /*newReservedMemberNames*/ undefined);
 
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         writeKeyword("interface");
         writeSpace();
         emit(node.name);
@@ -3839,7 +3847,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitTypeAliasDeclaration(node: TypeAliasDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         writeKeyword("type");
         writeSpace();
         emit(node.name);
@@ -3852,7 +3860,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitEnumDeclaration(node: EnumDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         writeKeyword("enum");
         writeSpace();
         emit(node.name);
@@ -3864,7 +3872,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitModuleDeclaration(node: ModuleDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         if (~node.flags & NodeFlags.GlobalAugmentation) {
             writeKeyword(node.flags & NodeFlags.Namespace ? "namespace" : "module");
             writeSpace();
@@ -3897,7 +3905,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitImportEqualsDeclaration(node: ImportEqualsDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         emitTokenWithComment(SyntaxKind.ImportKeyword, node.modifiers ? node.modifiers.end : node.pos, writeKeyword, node);
         writeSpace();
         if (node.isTypeOnly) {
@@ -3922,7 +3930,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitImportDeclaration(node: ImportDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         emitTokenWithComment(SyntaxKind.ImportKeyword, node.modifiers ? node.modifiers.end : node.pos, writeKeyword, node);
         writeSpace();
         if (node.importClause) {
@@ -3984,7 +3992,7 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
     }
 
     function emitExportDeclaration(node: ExportDeclaration) {
-        emitModifiers(node, node.modifiers);
+        emitDecoratorsAndModifiers(node, node.modifiers, /*allowDecorators*/ false);
         let nextPos = emitTokenWithComment(SyntaxKind.ExportKeyword, node.pos, writeKeyword, node);
         writeSpace();
         if (node.isTypeOnly) {
@@ -4714,16 +4722,19 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
         write = savedWrite;
     }
 
-    function emitDecoratorsAndModifiers(node: Node, modifiers: NodeArray<ModifierLike> | undefined) {
+    function emitDecoratorsAndModifiers(node: Node, modifiers: NodeArray<ModifierLike> | undefined, allowDecorators: boolean) {
         if (modifiers?.length) {
             if (every(modifiers, isModifier)) {
                 // if all modifier-likes are `Modifier`, simply emit the array as modifiers.
-                return emitModifiers(node, modifiers as NodeArray<Modifier>);
+                return emitModifierList(node, modifiers as NodeArray<Modifier>);
             }
 
             if (every(modifiers, isDecorator)) {
-                // if all modifier-likes are `Decorator`, simply emit the array as decorators.
-                return emitDecorators(node, modifiers as NodeArray<Decorator>);
+                if (allowDecorators) {
+                    // if all modifier-likes are `Decorator`, simply emit the array as decorators.
+                    return emitDecoratorList(node, modifiers as NodeArray<Decorator>);
+                }
+                return node.pos;
             }
 
             onBeforeEmitNodeArray?.(modifiers);
@@ -4733,10 +4744,11 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
             let mode: "modifiers" | "decorators" | undefined;
             let start = 0;
             let pos = 0;
+            let lastModifier: ModifierLike | undefined;
             while (start < modifiers.length) {
                 while (pos < modifiers.length) {
-                    const modifier = modifiers[pos];
-                    mode = isDecorator(modifier) ? "decorators" : "modifiers";
+                    lastModifier = modifiers[pos];
+                    mode = isDecorator(lastModifier) ? "decorators" : "modifiers";
                     if (lastMode === undefined) {
                         lastMode = mode;
                     }
@@ -4750,27 +4762,37 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
                 const textRange: TextRange = { pos: -1, end: -1 };
                 if (start === 0) textRange.pos = modifiers.pos;
                 if (pos === modifiers.length - 1) textRange.end = modifiers.end;
-                emitNodeListItems(
-                    emit,
-                    node,
-                    modifiers,
-                    lastMode === "modifiers" ? ListFormat.Modifiers : ListFormat.Decorators,
-                    /*parenthesizerRule*/ undefined,
-                    start,
-                    pos - start,
-                    /*hasTrailingComma*/ false,
-                    textRange);
+                if (lastMode === "modifiers" || allowDecorators) {
+                    emitNodeListItems(
+                        emit,
+                        node,
+                        modifiers,
+                        lastMode === "modifiers" ? ListFormat.Modifiers : ListFormat.Decorators,
+                        /*parenthesizerRule*/ undefined,
+                        start,
+                        pos - start,
+                        /*hasTrailingComma*/ false,
+                        textRange);
+                }
                 start = pos;
                 lastMode = mode;
                 pos++;
             }
 
             onAfterEmitNodeArray?.(modifiers);
+
+            if (lastModifier && !positionIsSynthesized(lastModifier.end)) {
+                return lastModifier.end;
+            }
         }
+
+        return node.pos;
     }
 
-    function emitModifiers(node: Node, modifiers: NodeArray<Modifier> | undefined): void {
+    function emitModifierList(node: Node, modifiers: NodeArray<Modifier> | undefined): number {
         emitList(node, modifiers, ListFormat.Modifiers);
+        const lastModifier = lastOrUndefined(modifiers);
+        return lastModifier && !positionIsSynthesized(lastModifier.end) ? lastModifier.end : node.pos;
     }
 
     function emitTypeAnnotation(node: TypeNode | undefined) {
@@ -4836,8 +4858,10 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
         }
     }
 
-    function emitDecorators(parentNode: Node, decorators: NodeArray<Decorator> | undefined): void {
+    function emitDecoratorList(parentNode: Node, decorators: NodeArray<Decorator> | undefined): number {
         emitList(parentNode, decorators, ListFormat.Decorators);
+        const lastDecorator = lastOrUndefined(decorators);
+        return lastDecorator && !positionIsSynthesized(lastDecorator.end) ? lastDecorator.end : parentNode.pos;
     }
 
     function emitTypeArguments(parentNode: Node, typeArguments: NodeArray<TypeNode> | undefined) {
@@ -5014,8 +5038,12 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
                 //          /* End of parameter a */ -> this comment isn't considered to be trailing comment of parameter "a" due to newline
                 //          ,
                 if (format & ListFormat.DelimitersMask && previousSibling.end !== (parentNode ? parentNode.end : -1)) {
-                    emitLeadingCommentsOfPosition(previousSibling.end);
+                    const previousSiblingEmitFlags = getEmitFlags(previousSibling);
+                    if (!(previousSiblingEmitFlags & EmitFlags.NoTrailingComments)) {
+                        emitLeadingCommentsOfPosition(previousSibling.end);
+                    }
                 }
+
                 writeDelimiter(format);
                 recordBundleFileInternalSectionEnd(previousSourceFileTextKind);
 
@@ -5701,7 +5729,8 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
 
     function generateNameCached(node: Node, privateName: boolean, flags?: GeneratedIdentifierFlags, prefix?: string | GeneratedNamePart, suffix?: string) {
         const nodeId = getNodeId(node);
-        return nodeIdToGeneratedName[nodeId] || (nodeIdToGeneratedName[nodeId] = generateNameForNode(node, privateName, flags ?? GeneratedIdentifierFlags.None, formatGeneratedNamePart(prefix, generateName), formatGeneratedNamePart(suffix)));
+        const cache = privateName ? nodeIdToGeneratedPrivateName : nodeIdToGeneratedName;
+        return cache[nodeId] || (cache[nodeId] = generateNameForNode(node, privateName, flags ?? GeneratedIdentifierFlags.None, formatGeneratedNamePart(prefix, generateName), formatGeneratedNamePart(suffix)));
     }
 
     /**
@@ -5944,7 +5973,14 @@ export function createPrinter(printerOptions: PrinterOptions = {}, handlers: Pri
                 Debug.assert(!prefix && !suffix && !privateName);
                 return generateNameForImportOrExportDeclaration(node as ImportDeclaration | ExportDeclaration);
             case SyntaxKind.FunctionDeclaration:
-            case SyntaxKind.ClassDeclaration:
+            case SyntaxKind.ClassDeclaration: {
+                Debug.assert(!prefix && !suffix && !privateName);
+                const name = (node as ClassDeclaration | FunctionDeclaration).name;
+                if (name && !isGeneratedIdentifier(name)) {
+                    return generateNameForNode(name, /*privateName*/ false, flags, prefix, suffix);
+                }
+                return generateNameForExportDefault();
+            }
             case SyntaxKind.ExportAssignment:
                 Debug.assert(!prefix && !suffix && !privateName);
                 return generateNameForExportDefault();
diff --git a/src/compiler/factory/emitHelpers.ts b/src/compiler/factory/emitHelpers.ts
index faa93c77be83a..80968a7c20568 100644
--- a/src/compiler/factory/emitHelpers.ts
+++ b/src/compiler/factory/emitHelpers.ts
@@ -20,13 +20,15 @@ import {
     getEmitScriptTarget,
     getPropertyNameOfBindingOrAssignmentElement,
     Identifier,
+    InternalEmitFlags,
     isCallExpression,
     isComputedPropertyName,
     isIdentifier,
     memoize,
-    PrivateIdentifierKind,
+    PrivateIdentifier,
     ScriptTarget,
     setEmitFlags,
+    setInternalEmitFlags,
     setTextRange,
     SyntaxKind,
     TextRange,
@@ -34,6 +36,64 @@ import {
     UnscopedEmitHelper,
 } from "../_namespaces/ts";
 
+/** @internal */
+export const enum PrivateIdentifierKind {
+    Field = "f",
+    Method = "m",
+    Accessor = "a"
+}
+
+/**
+ * Describes the decorator context object passed to a native ECMAScript decorator for a class.
+ *
+ * @internal
+ */
+export interface ESDecorateClassContext {
+    /**
+     * The kind of the decorated element.
+     */
+    kind: "class";
+
+    /**
+     * The name of the decorated element.
+     */
+    name: Expression;
+}
+
+/**
+ * Describes the decorator context object passed to a native ECMAScript decorator for a class element.
+ *
+ * @internal
+ */
+export interface ESDecorateClassElementContext {
+    /**
+     * The kind of the decorated element.
+     */
+    kind: "method" | "getter" | "setter" | "accessor" | "field";
+    name: ESDecorateName;
+    static: boolean;
+    private: boolean;
+    access: ESDecorateClassElementAccess;
+}
+
+/** @internal */
+export interface ESDecorateClassElementAccess {
+    get?: boolean;
+    set?: boolean;
+}
+
+/** @internal */
+export type ESDecorateName =
+    | { computed: true, name: Expression }
+    | { computed: false, name: Identifier | PrivateIdentifier }
+    ;
+
+/** @internal */
+export type ESDecorateContext =
+    | ESDecorateClassContext
+    | ESDecorateClassElementContext
+    ;
+
 /** @internal */
 export interface EmitHelperFactory {
     getUnscopedHelperName(name: string): Identifier;
@@ -41,6 +101,9 @@ export interface EmitHelperFactory {
     createDecorateHelper(decoratorExpressions: readonly Expression[], target: Expression, memberName?: Expression, descriptor?: Expression): Expression;
     createMetadataHelper(metadataKey: string, metadataValue: Expression): Expression;
     createParamHelper(expression: Expression, parameterOffset: number): Expression;
+    // ES Decorators Helpers
+    createESDecorateHelper(ctor: Expression, descriptorIn: Expression, decorators: Expression, contextIn: ESDecorateContext, initializers: Expression, extraInitializers: Expression): Expression;
+    createRunInitializersHelper(thisArg: Expression, initializers: Expression, value?: Expression): Expression;
     // ES2018 Helpers
     createAssignHelper(attributesSegments: readonly Expression[]): Expression;
     createAwaitHelper(expression: Expression): Expression;
@@ -55,6 +118,8 @@ export interface EmitHelperFactory {
     createExtendsHelper(name: Identifier): Expression;
     createTemplateObjectHelper(cooked: ArrayLiteralExpression, raw: ArrayLiteralExpression): Expression;
     createSpreadArrayHelper(to: Expression, from: Expression, packFrom: boolean): Expression;
+    createPropKeyHelper(expr: Expression): Expression;
+    createSetFunctionNameHelper(f: Expression, name: Expression, prefix?: string): Expression;
     // ES2015 Destructuring Helpers
     createValuesHelper(expression: Expression): Expression;
     createReadHelper(iteratorRecord: Expression, count: number | undefined): Expression;
@@ -75,8 +140,8 @@ export interface EmitHelperFactory {
 /** @internal */
 export function createEmitHelperFactory(context: TransformationContext): EmitHelperFactory {
     const factory = context.factory;
-    const immutableTrue = memoize(() => setEmitFlags(factory.createTrue(), EmitFlags.Immutable));
-    const immutableFalse = memoize(() => setEmitFlags(factory.createFalse(), EmitFlags.Immutable));
+    const immutableTrue = memoize(() => setInternalEmitFlags(factory.createTrue(), InternalEmitFlags.Immutable));
+    const immutableFalse = memoize(() => setInternalEmitFlags(factory.createFalse(), InternalEmitFlags.Immutable));
 
     return {
         getUnscopedHelperName,
@@ -84,6 +149,9 @@ export function createEmitHelperFactory(context: TransformationContext): EmitHel
         createDecorateHelper,
         createMetadataHelper,
         createParamHelper,
+        // ES Decorators Helpers
+        createESDecorateHelper,
+        createRunInitializersHelper,
         // ES2018 Helpers
         createAssignHelper,
         createAwaitHelper,
@@ -98,6 +166,8 @@ export function createEmitHelperFactory(context: TransformationContext): EmitHel
         createExtendsHelper,
         createTemplateObjectHelper,
         createSpreadArrayHelper,
+        createPropKeyHelper,
+        createSetFunctionNameHelper,
         // ES2015 Destructuring Helpers
         createValuesHelper,
         createReadHelper,
@@ -171,6 +241,206 @@ export function createEmitHelperFactory(context: TransformationContext): EmitHel
         );
     }
 
+    // ES Decorators Helpers
+
+    function createESDecorateClassContextObject(contextIn: ESDecorateClassContext) {
+        return factory.createObjectLiteralExpression([
+            factory.createPropertyAssignment(factory.createIdentifier("kind"), factory.createStringLiteral("class")),
+            factory.createPropertyAssignment(factory.createIdentifier("name"), contextIn.name)
+        ]);
+    }
+
+    // Per https://github.com/tc39/proposal-decorators/issues/494, we may need to change the emit for the `access` object
+    // so that it does not need to be used via `.call`. The following two sections represent the options presented in
+    // tc39/proposal-decorators#494
+    //
+    // === Current approach (`access.get.call(obj)`, `access.set.call(obj, value)`) ===
+    //
+    // function createESDecorateClassElementAccessGetMethod(elementName: ESDecorateName) {
+    //     const accessor = elementName.computed ?
+    //         factory.createElementAccessExpression(factory.createThis(), elementName.name) :
+    //         factory.createPropertyAccessExpression(factory.createThis(), elementName.name);
+    //
+    //     return factory.createMethodDeclaration(
+    //         /*modifiers*/ undefined,
+    //         /*asteriskToken*/ undefined,
+    //         "get",
+    //         /*questionToken*/ undefined,
+    //         /*typeParameters*/ undefined,
+    //         [],
+    //         /*type*/ undefined,
+    //         factory.createBlock([factory.createReturnStatement(accessor)])
+    //     );
+    // }
+    //
+    // function createESDecorateClassElementAccessSetMethod(elementName: ESDecorateName) {
+    //     const accessor = elementName.computed ?
+    //         factory.createElementAccessExpression(factory.createThis(), elementName.name) :
+    //         factory.createPropertyAccessExpression(factory.createThis(), elementName.name);
+    //
+    //     return factory.createMethodDeclaration(
+    //         /*modifiers*/ undefined,
+    //         /*asteriskToken*/ undefined,
+    //         "set",
+    //         /*questionToken*/ undefined,
+    //         /*typeParameters*/ undefined,
+    //         [factory.createParameterDeclaration(
+    //             /*modifiers*/ undefined,
+    //             /*dotDotDotToken*/ undefined,
+    //             factory.createIdentifier("value")
+    //         )],
+    //         /*type*/ undefined,
+    //         factory.createBlock([
+    //             factory.createExpressionStatement(
+    //                 factory.createAssignment(
+    //                     accessor,
+    //                     factory.createIdentifier("value")
+    //                 )
+    //             )
+    //         ])
+    //     );
+    // }
+    //
+    // function createESDecorateClassElementAccessObject(name: ESDecorateName, access: ESDecorateClassElementAccess) {
+    //     const properties: ObjectLiteralElementLike[] = [];
+    //     if (access.get) properties.push(createESDecorateClassElementAccessGetMethod(name));
+    //     if (access.set) properties.push(createESDecorateClassElementAccessSetMethod(name));
+    //     return factory.createObjectLiteralExpression(properties);
+    // }
+    //
+    // === Suggested approach (`access.get(obj)`, `access.set(obj, value)`, `access.has(obj)`) ===
+    //
+    // function createESDecorateClassElementAccessGetMethod(elementName: ESDecorateName) {
+    //     const accessor = elementName.computed ?
+    //         factory.createElementAccessExpression(factory.createIdentifier("obj"), elementName.name) :
+    //         factory.createPropertyAccessExpression(factory.createIdentifier("obj"), elementName.name);
+    //
+    //     return factory.createMethodDeclaration(
+    //         /*modifiers*/ undefined,
+    //         /*asteriskToken*/ undefined,
+    //         "get",
+    //         /*questionToken*/ undefined,
+    //         /*typeParameters*/ undefined,
+    //         [factory.createParameterDeclaration(
+    //             /*modifiers*/ undefined,
+    //             /*dotDotDotToken*/ undefined,
+    //             factory.createIdentifier("obj")
+    //         )],
+    //         /*type*/ undefined,
+    //         factory.createBlock([factory.createReturnStatement(accessor)])
+    //     );
+    // }
+    //
+    // function createESDecorateClassElementAccessSetMethod(elementName: ESDecorateName) {
+    //     const accessor = elementName.computed ?
+    //         factory.createElementAccessExpression(factory.createIdentifier("obj"), elementName.name) :
+    //         factory.createPropertyAccessExpression(factory.createIdentifier("obj"), elementName.name);
+    //
+    //     return factory.createMethodDeclaration(
+    //         /*modifiers*/ undefined,
+    //         /*asteriskToken*/ undefined,
+    //         "set",
+    //         /*questionToken*/ undefined,
+    //         /*typeParameters*/ undefined,
+    //         [factory.createParameterDeclaration(
+    //             /*modifiers*/ undefined,
+    //             /*dotDotDotToken*/ undefined,
+    //             factory.createIdentifier("obj")
+    //         ),
+    //         factory.createParameterDeclaration(
+    //             /*modifiers*/ undefined,
+    //             /*dotDotDotToken*/ undefined,
+    //             factory.createIdentifier("value")
+    //         )],
+    //         /*type*/ undefined,
+    //         factory.createBlock([
+    //             factory.createExpressionStatement(
+    //                 factory.createAssignment(
+    //                     accessor,
+    //                     factory.createIdentifier("value")
+    //                 )
+    //             )
+    //         ])
+    //     );
+    // }
+    //
+    // function createESDecorateClassElementAccessHasMethod(elementName: ESDecorateName) {
+    //     const propertyName =
+    //         elementName.computed ? elementName.name :
+    //         isIdentifier(elementName.name) ? factory.createStringLiteralFromNode(elementName.name) :
+    //         elementName.name;
+    //
+    //     return factory.createMethodDeclaration(
+    //         /*modifiers*/ undefined,
+    //         /*asteriskToken*/ undefined,
+    //         "has",
+    //         /*questionToken*/ undefined,
+    //         /*typeParameters*/ undefined,
+    //         [factory.createParameterDeclaration(
+    //             /*modifiers*/ undefined,
+    //             /*dotDotDotToken*/ undefined,
+    //             factory.createIdentifier("obj")
+    //         )],
+    //         /*type*/ undefined,
+    //         factory.createBlock([factory.createReturnStatement(
+    //             factory.createBinaryExpression(
+    //                 propertyName,
+    //                 SyntaxKind.InKeyword,
+    //                 factory.createIdentifier("obj")
+    //             )
+    //         )])
+    //     );
+    // }
+    //
+    // function createESDecorateClassElementAccessObject(name: ESDecorateName, access: ESDecorateClassElementAccess) {
+    //     const properties: ObjectLiteralElementLike[] = [];
+    //     if (access.get) properties.push(createESDecorateClassElementAccessGetMethod(name));
+    //     if (access.set) properties.push(createESDecorateClassElementAccessSetMethod(name));
+    //     property.push(createESDecorateClassElementAccessHasMethod(name));
+    //     return factory.createObjectLiteralExpression(properties);
+    // }
+
+    function createESDecorateClassElementContextObject(contextIn: ESDecorateClassElementContext) {
+        return factory.createObjectLiteralExpression([
+            factory.createPropertyAssignment(factory.createIdentifier("kind"), factory.createStringLiteral(contextIn.kind)),
+            factory.createPropertyAssignment(factory.createIdentifier("name"), contextIn.name.computed ? contextIn.name.name : factory.createStringLiteralFromNode(contextIn.name.name)),
+            factory.createPropertyAssignment(factory.createIdentifier("static"), contextIn.static ? factory.createTrue() : factory.createFalse()),
+            factory.createPropertyAssignment(factory.createIdentifier("private"), contextIn.private ? factory.createTrue() : factory.createFalse()),
+
+            // Disabled, pending resolution of https://github.com/tc39/proposal-decorators/issues/494
+            // factory.createPropertyAssignment(factory.createIdentifier("access"), createESDecorateClassElementAccessObject(contextIn.name, contextIn.access))
+        ]);
+    }
+
+    function createESDecorateContextObject(contextIn: ESDecorateContext) {
+        return contextIn.kind === "class" ? createESDecorateClassContextObject(contextIn) :
+            createESDecorateClassElementContextObject(contextIn);
+    }
+
+    function createESDecorateHelper(ctor: Expression, descriptorIn: Expression, decorators: Expression, contextIn: ESDecorateContext, initializers: Expression, extraInitializers: Expression) {
+        context.requestEmitHelper(esDecorateHelper);
+        return factory.createCallExpression(
+            getUnscopedHelperName("__esDecorate"),
+            /*typeArguments*/ undefined,
+            [
+                ctor ?? factory.createNull(),
+                descriptorIn ?? factory.createNull(),
+                decorators,
+                createESDecorateContextObject(contextIn),
+                initializers,
+                extraInitializers
+            ]);
+    }
+
+    function createRunInitializersHelper(thisArg: Expression, initializers: Expression, value?: Expression) {
+        context.requestEmitHelper(runInitializersHelper);
+        return factory.createCallExpression(
+            getUnscopedHelperName("__runInitializers"),
+            /*typeArguments*/ undefined,
+            value ? [thisArg, initializers, value] : [thisArg, initializers]
+        );
+    }
+
     // ES2018 Helpers
 
     function createAssignHelper(attributesSegments: Expression[]) {
@@ -332,6 +602,24 @@ export function createEmitHelperFactory(context: TransformationContext): EmitHel
         );
     }
 
+    function createPropKeyHelper(expr: Expression) {
+        context.requestEmitHelper(propKeyHelper);
+        return factory.createCallExpression(
+            getUnscopedHelperName("__propKey"),
+            /*typeArguments*/ undefined,
+            [expr]
+        );
+    }
+
+    function createSetFunctionNameHelper(f: Expression, name: Expression, prefix?: string): Expression {
+        context.requestEmitHelper(setFunctionNameHelper);
+        return context.factory.createCallExpression(
+            getUnscopedHelperName("__setFunctionName"),
+            /*typeArguments*/ undefined,
+            prefix ? [f, name, context.factory.createStringLiteral(prefix)] : [f, name]
+        );
+    }
+
     // ES2015 Destructuring Helpers
 
     function createValuesHelper(expression: Expression) {
@@ -507,6 +795,59 @@ export const paramHelper: UnscopedEmitHelper = {
             };`
 };
 
+// ES Decorators Helpers
+/** @internal */
+export const esDecorateHelper: UnscopedEmitHelper = {
+    name: "typescript:esDecorate",
+    importName: "__esDecorate",
+    scoped: false,
+    priority: 2,
+    text: `
+        var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+            function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+            var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+            var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+            var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+            var _, done = false;
+            for (var i = decorators.length - 1; i >= 0; i--) {
+                var context = {};
+                for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+                for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+                context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+                var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+                if (kind === "accessor") {
+                    if (result === void 0) continue;
+                    if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+                    if (_ = accept(result.get)) descriptor.get = _;
+                    if (_ = accept(result.set)) descriptor.set = _;
+                    if (_ = accept(result.init)) initializers.push(_);
+                }
+                else if (_ = accept(result)) {
+                    if (kind === "field") initializers.push(_);
+                    else descriptor[key] = _;
+                }
+            }
+            if (target) Object.defineProperty(target, contextIn.name, descriptor);
+            done = true;
+        };`
+};
+
+/** @internal */
+export const runInitializersHelper: UnscopedEmitHelper = {
+    name: "typescript:runInitializers",
+    importName: "__runInitializers",
+    scoped: false,
+    priority: 2,
+    text: `
+        var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
+            var useValue = arguments.length > 2;
+            for (var i = 0; i < initializers.length; i++) {
+                value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+            }
+            return useValue ? value : void 0;
+        };`
+};
+
 // ES2018 Helpers
 
 /** @internal */
@@ -709,6 +1050,30 @@ export const spreadArrayHelper: UnscopedEmitHelper = {
             };`
 };
 
+/** @internal */
+export const propKeyHelper: UnscopedEmitHelper = {
+    name: "typescript:propKey",
+    importName: "__propKey",
+    scoped: false,
+    text: `
+        var __propKey = (this && this.__propKey) || function (x) {
+            return typeof x === "symbol" ? x : "".concat(x);
+        };`
+};
+
+// https://tc39.es/ecma262/#sec-setfunctionname
+/** @internal */
+export const setFunctionNameHelper: UnscopedEmitHelper = {
+    name: "typescript:setFunctionName",
+    importName: "__setFunctionName",
+    scoped: false,
+    text: `
+        var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+            if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+            return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+        };`
+};
+
 // ES2015 Destructuring Helpers
 
 /** @internal */
@@ -1069,6 +1434,8 @@ export function getAllUnscopedEmitHelpers() {
         decorateHelper,
         metadataHelper,
         paramHelper,
+        esDecorateHelper,
+        runInitializersHelper,
         assignHelper,
         awaitHelper,
         asyncGeneratorHelper,
@@ -1081,6 +1448,8 @@ export function getAllUnscopedEmitHelpers() {
         spreadArrayHelper,
         valuesHelper,
         readHelper,
+        propKeyHelper,
+        setFunctionNameHelper,
         generatorHelper,
         importStarHelper,
         importDefaultHelper,
diff --git a/src/compiler/factory/emitNode.ts b/src/compiler/factory/emitNode.ts
index 0a7964b1bd8ea..fba507d899ea7 100644
--- a/src/compiler/factory/emitNode.ts
+++ b/src/compiler/factory/emitNode.ts
@@ -11,6 +11,7 @@ import {
     getSourceFileOfNode,
     Identifier,
     ImportSpecifier,
+    InternalEmitFlags,
     isParseTreeNode,
     Node,
     NodeArray,
@@ -49,7 +50,7 @@ export function getOrCreateEmitNode(node: Node): EmitNode {
         node.emitNode = {} as EmitNode;
     }
     else {
-        Debug.assert(!(node.emitNode.flags & EmitFlags.Immutable), "Invalid attempt to mutate an immutable node.");
+        Debug.assert(!(node.emitNode.internalFlags & InternalEmitFlags.Immutable), "Invalid attempt to mutate an immutable node.");
     }
     return node.emitNode;
 }
@@ -104,6 +105,27 @@ export function addEmitFlags<T extends Node>(node: T, emitFlags: EmitFlags) {
     return node;
 }
 
+/**
+ * Sets flags that control emit behavior of a node.
+ *
+ * @internal
+ */
+export function setInternalEmitFlags<T extends Node>(node: T, emitFlags: InternalEmitFlags) {
+    getOrCreateEmitNode(node).internalFlags = emitFlags;
+    return node;
+}
+
+/**
+ * Sets flags that control emit behavior of a node.
+ *
+ * @internal
+ */
+export function addInternalEmitFlags<T extends Node>(node: T, emitFlags: InternalEmitFlags) {
+    const emitNode = getOrCreateEmitNode(node);
+    emitNode.internalFlags = emitNode.internalFlags | emitFlags;
+    return node;
+}
+
 /**
  * Gets a custom text range to use when emitting source maps.
  */
@@ -309,7 +331,7 @@ export function setSnippetElement<T extends Node>(node: T, snippet: SnippetEleme
 
 /** @internal */
 export function ignoreSourceNewlines<T extends Node>(node: T): T {
-    getOrCreateEmitNode(node).flags |= EmitFlags.IgnoreSourceNewlines;
+    getOrCreateEmitNode(node).internalFlags |= InternalEmitFlags.IgnoreSourceNewlines;
     return node;
 }
 
diff --git a/src/compiler/factory/nodeConverters.ts b/src/compiler/factory/nodeConverters.ts
index e506391a78b78..1541d56bf0232 100644
--- a/src/compiler/factory/nodeConverters.ts
+++ b/src/compiler/factory/nodeConverters.ts
@@ -10,6 +10,7 @@ import {
     Debug,
     Expression,
     FunctionDeclaration,
+    getModifiers,
     getStartsOnNewLine,
     isArrayBindingPattern,
     isArrayLiteralExpression,
@@ -58,7 +59,7 @@ export function createNodeConverters(factory: NodeFactory): NodeConverters {
     function convertToFunctionExpression(node: FunctionDeclaration) {
         if (!node.body) return Debug.fail(`Cannot convert a FunctionDeclaration without a body`);
         const updated = factory.createFunctionExpression(
-            node.modifiers,
+            getModifiers(node),
             node.asteriskToken,
             node.name,
             node.typeParameters,
diff --git a/src/compiler/factory/nodeFactory.ts b/src/compiler/factory/nodeFactory.ts
index ea7d745599157..ecafc7f7a098e 100644
--- a/src/compiler/factory/nodeFactory.ts
+++ b/src/compiler/factory/nodeFactory.ts
@@ -145,6 +145,7 @@ import {
     InferTypeNode,
     InputFiles,
     InterfaceDeclaration,
+    InternalEmitFlags,
     IntersectionTypeNode,
     isArray,
     isArrayLiteralExpression,
@@ -999,6 +1000,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         createArraySliceCall,
         createArrayConcatCall,
         createObjectDefinePropertyCall,
+        createObjectGetOwnPropertyDescriptorCall,
         createReflectGetCall,
         createReflectSetCall,
         createPropertyDescriptor,
@@ -1794,6 +1796,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateMethodDeclaration(updated: Mutable<MethodDeclaration>, original: MethodDeclaration) {
         if (updated !== original) {
+            // copy children used only for error reporting
             updated.exclamationToken = original.exclamationToken;
         }
         return update(updated, original);
@@ -1807,7 +1810,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         node.body = body;
         node.transformFlags = propagateChildFlags(body) | TransformFlags.ContainsClassFields;
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
         node.modifiers = undefined; // initialized by parser for grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         node.locals = undefined; // initialized by binder (LocalsContainer)
@@ -1829,7 +1831,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateClassStaticBlockDeclaration(updated: Mutable<ClassStaticBlockDeclaration>, original: ClassStaticBlockDeclaration) {
         if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
+            // copy children used only for error reporting
             updated.modifiers = original.modifiers;
         }
         return update(updated, original);
@@ -1837,7 +1839,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     // @api
     function createConstructorDeclaration(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         parameters: readonly ParameterDeclaration[],
         body: Block | undefined
     ) {
@@ -1852,7 +1854,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             (propagateChildFlags(node.body) & ~TransformFlags.ContainsPossibleTopLevelAwait) |
             TransformFlags.ContainsES2015;
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
         node.typeParameters = undefined; // initialized by parser for grammar errors
         node.type = undefined; // initialized by parser for grammar errors
         node.typeArguments = undefined; // used in quick info
@@ -1867,7 +1868,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateConstructorDeclaration(
         node: ConstructorDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         parameters: readonly ParameterDeclaration[],
         body: Block | undefined
     ) {
@@ -1880,7 +1881,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateConstructorDeclaration(updated: Mutable<ConstructorDeclaration>, original: ConstructorDeclaration) {
         if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
             updated.typeParameters = original.typeParameters;
             updated.type = original.type;
         }
@@ -1946,6 +1946,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateGetAccessorDeclaration(updated: Mutable<GetAccessorDeclaration>, original: GetAccessorDeclaration) {
         if (updated !== original) {
+            // copy children used only for error reporting
             updated.typeParameters = original.typeParameters;
         }
         return finishUpdateBaseSignatureDeclaration(updated, original);
@@ -2006,6 +2007,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateSetAccessorDeclaration(updated: Mutable<SetAccessorDeclaration>, original: SetAccessorDeclaration) {
         if (updated !== original) {
+            // copy children used only for error reporting
             updated.typeParameters = original.typeParameters;
             updated.type = original.type;
         }
@@ -2080,7 +2082,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     // @api
     function createIndexSignature(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         parameters: readonly ParameterDeclaration[],
         type: TypeNode | undefined
     ): IndexSignatureDeclaration {
@@ -2090,7 +2092,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         node.type = type!; // TODO(rbuckton): We mark this as required in IndexSignatureDeclaration, but it looks like the parser allows it to be elided.
         node.transformFlags = TransformFlags.ContainsTypeScript;
 
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         node.locals = undefined; // initialized by binder (LocalsContainer)
         node.nextContainer = undefined; // initialized by binder (LocalsContainer)
@@ -2101,7 +2102,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateIndexSignature(
         node: IndexSignatureDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         parameters: readonly ParameterDeclaration[],
         type: TypeNode
     ) {
@@ -2210,6 +2211,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateFunctionTypeNode(updated: Mutable<FunctionTypeNode>, original: FunctionTypeNode) {
         if (updated !== original) {
+            // copy children used only for error reporting
             updated.modifiers = original.modifiers;
         }
         return finishUpdateBaseSignatureDeclaration(updated, original);
@@ -3766,7 +3768,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     }
 
     // @api
-    function createVariableStatement(modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]) {
+    function createVariableStatement(modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]) {
         const node = createBaseNode<VariableStatement>(SyntaxKind.VariableStatement);
         node.modifiers = asNodeArray(modifiers);
         node.declarationList = isArray(declarationList) ? createVariableDeclarationList(declarationList) : declarationList;
@@ -3777,14 +3779,13 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             node.transformFlags = TransformFlags.ContainsTypeScript;
         }
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         node.flowNode = undefined; // initialized by binder (FlowContainer)
         return node;
     }
 
     // @api
-    function updateVariableStatement(node: VariableStatement, modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList) {
+    function updateVariableStatement(node: VariableStatement, modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList) {
         return node.modifiers !== modifiers
             || node.declarationList !== declarationList
             ? update(createVariableStatement(modifiers, declarationList), node)
@@ -4247,8 +4248,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
                 TransformFlags.ContainsHoistedDeclarationOrCompletion;
         }
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
-
         node.typeArguments = undefined; // used in quick info
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         node.locals = undefined; // initialized by binder (LocalsContainer)
@@ -4283,7 +4282,9 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     function finishUpdateFunctionDeclaration(updated: Mutable<FunctionDeclaration>, original: FunctionDeclaration) {
         if (updated !== original) {
             // copy children used only for error reporting
-            updated.illegalDecorators = original.illegalDecorators;
+            if (updated.modifiers === original.modifiers) {
+                    updated.modifiers = original.modifiers;
+            }
         }
         return finishUpdateBaseSignatureDeclaration(updated, original);
     }
@@ -4344,7 +4345,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     // @api
     function createInterfaceDeclaration(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: string | Identifier,
         typeParameters: readonly TypeParameterDeclaration[] | undefined,
         heritageClauses: readonly HeritageClause[] | undefined,
@@ -4358,7 +4359,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         node.members = createNodeArray(members);
         node.transformFlags = TransformFlags.ContainsTypeScript;
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         return node;
     }
@@ -4366,7 +4366,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateInterfaceDeclaration(
         node: InterfaceDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: Identifier,
         typeParameters: readonly TypeParameterDeclaration[] | undefined,
         heritageClauses: readonly HeritageClause[] | undefined,
@@ -4377,20 +4377,13 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             || node.typeParameters !== typeParameters
             || node.heritageClauses !== heritageClauses
             || node.members !== members
-            ? finishUpdateInterfaceDeclaration(createInterfaceDeclaration(modifiers, name, typeParameters, heritageClauses, members), node)
+            ? update(createInterfaceDeclaration(modifiers, name, typeParameters, heritageClauses, members), node)
             : node;
     }
 
-    function finishUpdateInterfaceDeclaration(updated: Mutable<InterfaceDeclaration>, original: InterfaceDeclaration) {
-        if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
-        }
-        return update(updated, original);
-    }
-
     // @api
     function createTypeAliasDeclaration(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: string | Identifier,
         typeParameters: readonly TypeParameterDeclaration[] | undefined,
         type: TypeNode
@@ -4402,7 +4395,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         node.type = type;
         node.transformFlags = TransformFlags.ContainsTypeScript;
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         node.locals = undefined; // initialized by binder (LocalsContainer)
         node.nextContainer = undefined; // initialized by binder (LocalsContainer)
@@ -4412,7 +4404,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateTypeAliasDeclaration(
         node: TypeAliasDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: Identifier,
         typeParameters: readonly TypeParameterDeclaration[] | undefined,
         type: TypeNode
@@ -4421,20 +4413,13 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             || node.name !== name
             || node.typeParameters !== typeParameters
             || node.type !== type
-            ? finishUpdateTypeAliasDeclaration(createTypeAliasDeclaration(modifiers, name, typeParameters, type), node)
+            ? update(createTypeAliasDeclaration(modifiers, name, typeParameters, type), node)
             : node;
     }
 
-    function finishUpdateTypeAliasDeclaration(updated: Mutable<TypeAliasDeclaration>, original: TypeAliasDeclaration) {
-        if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
-        }
-        return update(updated, original);
-    }
-
     // @api
     function createEnumDeclaration(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: string | Identifier,
         members: readonly EnumMember[]
     ) {
@@ -4449,7 +4434,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             TransformFlags.ContainsTypeScript;
         node.transformFlags &= ~TransformFlags.ContainsPossibleTopLevelAwait; // Enum declarations cannot contain `await`
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         return node;
     }
@@ -4457,26 +4441,19 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateEnumDeclaration(
         node: EnumDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: Identifier,
         members: readonly EnumMember[]) {
         return node.modifiers !== modifiers
             || node.name !== name
             || node.members !== members
-            ? finishUpdateEnumDeclaration(createEnumDeclaration(modifiers, name, members), node)
+            ? update(createEnumDeclaration(modifiers, name, members), node)
             : node;
     }
 
-    function finishUpdateEnumDeclaration(updated: Mutable<EnumDeclaration>, original: EnumDeclaration) {
-        if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
-        }
-        return update(updated, original);
-    }
-
     // @api
     function createModuleDeclaration(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: ModuleName,
         body: ModuleBody | undefined,
         flags = NodeFlags.None
@@ -4498,7 +4475,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         }
         node.transformFlags &= ~TransformFlags.ContainsPossibleTopLevelAwait; // Module declarations cannot contain `await`.
 
-        node.illegalDecorators = undefined; // initialized by parser for grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         node.locals = undefined; // initialized by binder (LocalsContainer)
         node.nextContainer = undefined; // initialized by binder (LocalsContainer)
@@ -4508,24 +4484,17 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateModuleDeclaration(
         node: ModuleDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         name: ModuleName,
         body: ModuleBody | undefined
     ) {
         return node.modifiers !== modifiers
             || node.name !== name
             || node.body !== body
-            ? finishUpdateModuleDeclaration(createModuleDeclaration(modifiers, name, body, node.flags), node)
+            ? update(createModuleDeclaration(modifiers, name, body, node.flags), node)
             : node;
     }
 
-    function finishUpdateModuleDeclaration(updated: Mutable<ModuleDeclaration>, original: ModuleDeclaration) {
-        if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
-        }
-        return update(updated, original);
-    }
-
     // @api
     function createModuleBlock(statements: readonly Statement[]) {
         const node = createBaseNode<ModuleBlock>(SyntaxKind.ModuleBlock);
@@ -4569,7 +4538,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             propagateIdentifierNameFlags(node.name) |
             TransformFlags.ContainsTypeScript;
 
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.modifiers = undefined; // initialized by parser to report grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         return node;
@@ -4584,7 +4552,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateNamespaceExportDeclaration(updated: Mutable<NamespaceExportDeclaration>, original: NamespaceExportDeclaration) {
         if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
+            // copy children used only for error reporting
             updated.modifiers = original.modifiers;
         }
         return update(updated, original);
@@ -4592,7 +4560,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     // @api
     function createImportEqualsDeclaration(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         isTypeOnly: boolean,
         name: string | Identifier,
         moduleReference: ModuleReference
@@ -4613,7 +4581,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
         node.transformFlags &= ~TransformFlags.ContainsPossibleTopLevelAwait; // Import= declaration is always parsed in an Await context
 
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         return node;
     }
@@ -4621,7 +4588,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateImportEqualsDeclaration(
         node: ImportEqualsDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         isTypeOnly: boolean,
         name: Identifier,
         moduleReference: ModuleReference
@@ -4630,20 +4597,13 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             || node.isTypeOnly !== isTypeOnly
             || node.name !== name
             || node.moduleReference !== moduleReference
-            ? finishUpdateImportEqualsDeclaration(createImportEqualsDeclaration(modifiers, isTypeOnly, name, moduleReference), node)
+            ? update(createImportEqualsDeclaration(modifiers, isTypeOnly, name, moduleReference), node)
             : node;
     }
 
-    function finishUpdateImportEqualsDeclaration(updated: Mutable<ImportEqualsDeclaration>, original: ImportEqualsDeclaration) {
-        if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
-        }
-        return update(updated, original);
-    }
-
     // @api
     function createImportDeclaration(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         importClause: ImportClause | undefined,
         moduleSpecifier: Expression,
         assertClause: AssertClause | undefined
@@ -4658,7 +4618,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             propagateChildFlags(node.moduleSpecifier);
         node.transformFlags &= ~TransformFlags.ContainsPossibleTopLevelAwait; // always parsed in an Await context
 
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         return node;
     }
@@ -4666,7 +4625,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateImportDeclaration(
         node: ImportDeclaration,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         importClause: ImportClause | undefined,
         moduleSpecifier: Expression,
         assertClause: AssertClause | undefined
@@ -4675,17 +4634,10 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             || node.importClause !== importClause
             || node.moduleSpecifier !== moduleSpecifier
             || node.assertClause !== assertClause
-            ? finishUpdateImportDeclaration(createImportDeclaration(modifiers, importClause, moduleSpecifier, assertClause), node)
+            ? update(createImportDeclaration(modifiers, importClause, moduleSpecifier, assertClause), node)
             : node;
     }
 
-    function finishUpdateImportDeclaration(updated: Mutable<ImportDeclaration>, original: ImportDeclaration) {
-        if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
-        }
-        return update(updated, original);
-    }
-
     // @api
     function createImportClause(isTypeOnly: boolean, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause {
         const node = createBaseDeclaration<ImportClause>(SyntaxKind.ImportClause);
@@ -4835,7 +4787,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     // @api
     function createExportAssignment(
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         isExportEquals: boolean | undefined,
         expression: Expression
     ) {
@@ -4848,7 +4800,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         node.transformFlags |= propagateChildrenFlags(node.modifiers) | propagateChildFlags(node.expression);
         node.transformFlags &= ~TransformFlags.ContainsPossibleTopLevelAwait; // always parsed in an Await context
 
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         return node;
     }
@@ -4856,22 +4807,15 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     // @api
     function updateExportAssignment(
         node: ExportAssignment,
-        modifiers: readonly Modifier[] | undefined,
+        modifiers: readonly ModifierLike[] | undefined,
         expression: Expression
     ) {
         return node.modifiers !== modifiers
             || node.expression !== expression
-            ? finishUpdateExportAssignment(createExportAssignment(modifiers, node.isExportEquals, expression), node)
+            ? update(createExportAssignment(modifiers, node.isExportEquals, expression), node)
             : node;
     }
 
-    function finishUpdateExportAssignment(updated: Mutable<ExportAssignment>, original: ExportAssignment) {
-        if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
-        }
-        return update(updated, original);
-    }
-
     // @api
     function createExportDeclaration(
         modifiers: readonly Modifier[] | undefined,
@@ -4892,7 +4836,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             propagateChildFlags(node.moduleSpecifier);
         node.transformFlags &= ~TransformFlags.ContainsPossibleTopLevelAwait; // always parsed in an Await context
 
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.jsDoc = undefined; // initialized by parser (JsDocContainer)
         return node;
     }
@@ -4917,7 +4860,10 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
 
     function finishUpdateExportDeclaration(updated: Mutable<ExportDeclaration>, original: ExportDeclaration) {
         if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
+            // copy children used only for error reporting
+            if (updated.modifiers === original.modifiers) {
+                updated.modifiers = original.modifiers;
+            }
         }
         return update(updated, original);
     }
@@ -5831,7 +5777,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             propagateNameFlags(node.name) |
             propagateChildFlags(node.initializer);
 
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.modifiers = undefined; // initialized by parser to report grammar errors
         node.questionToken = undefined; // initialized by parser to report grammar errors
         node.exclamationToken = undefined; // initialized by parser to report grammar errors
@@ -5850,7 +5795,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     function finishUpdatePropertyAssignment(updated: Mutable<PropertyAssignment>, original: PropertyAssignment) {
         // copy children used only for error reporting
         if (updated !== original) {
-            updated.illegalDecorators = original.illegalDecorators;
+            // copy children used only for error reporting
             updated.modifiers = original.modifiers;
             updated.questionToken = original.questionToken;
             updated.exclamationToken = original.exclamationToken;
@@ -5869,7 +5814,6 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
             TransformFlags.ContainsES2015;
 
         node.equalsToken = undefined; // initialized by parser to report grammar errors
-        node.illegalDecorators = undefined; // initialized by parser to report grammar errors
         node.modifiers = undefined; // initialized by parser to report grammar errors
         node.questionToken = undefined; // initialized by parser to report grammar errors
         node.exclamationToken = undefined; // initialized by parser to report grammar errors
@@ -5888,11 +5832,10 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
     function finishUpdateShorthandPropertyAssignment(updated: Mutable<ShorthandPropertyAssignment>, original: ShorthandPropertyAssignment) {
         if (updated !== original) {
             // copy children used only for error reporting
-            updated.equalsToken = original.equalsToken;
-            updated.illegalDecorators = original.illegalDecorators;
             updated.modifiers = original.modifiers;
             updated.questionToken = original.questionToken;
             updated.exclamationToken = original.exclamationToken;
+            updated.equalsToken = original.equalsToken;
         }
         return update(updated, original);
     }
@@ -6503,6 +6446,10 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         return createGlobalMethodCall("Object", "defineProperty", [target, asExpression(propertyName), attributes]);
     }
 
+    function createObjectGetOwnPropertyDescriptorCall(target: Expression, propertyName: string | Expression) {
+        return createGlobalMethodCall("Object", "getOwnPropertyDescriptor", [target, asExpression(propertyName)]);
+    }
+
     function createReflectGetCall(target: Expression, propertyKey: Expression, receiver?: Expression): CallExpression {
         return createGlobalMethodCall("Reflect", "get", receiver ? [target, propertyKey, receiver] : [target, propertyKey]);
     }
@@ -6687,7 +6634,7 @@ export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNode
         return { target, thisArg };
     }
 
-    function createAssignmentTargetWrapper(paramName: Identifier, expression: Expression): LeftHandSideExpression {
+    function createAssignmentTargetWrapper(paramName: Identifier, expression: Expression): PropertyAccessExpression {
         return createPropertyAccessExpression(
             // Explicit parens required because of v8 regression (https://bugs.chromium.org/p/v8/issues/detail?id=9560)
             createParenthesizedExpression(
@@ -7651,6 +7598,7 @@ export function setOriginalNode<T extends Node>(node: T, original: Node | undefi
 function mergeEmitNode(sourceEmitNode: EmitNode, destEmitNode: EmitNode | undefined) {
     const {
         flags,
+            internalFlags,
         leadingComments,
         trailingComments,
         commentRange,
@@ -7665,7 +7613,8 @@ function mergeEmitNode(sourceEmitNode: EmitNode, destEmitNode: EmitNode | undefi
     // We are using `.slice()` here in case `destEmitNode.leadingComments` is pushed to later.
     if (leadingComments) destEmitNode.leadingComments = addRange(leadingComments.slice(), destEmitNode.leadingComments);
     if (trailingComments) destEmitNode.trailingComments = addRange(trailingComments.slice(), destEmitNode.trailingComments);
-    if (flags) destEmitNode.flags = flags & ~EmitFlags.Immutable;
+    if (flags) destEmitNode.flags = flags;
+    if (internalFlags) destEmitNode.internalFlags = internalFlags & ~InternalEmitFlags.Immutable;
     if (commentRange) destEmitNode.commentRange = commentRange;
     if (sourceMapRange) destEmitNode.sourceMapRange = sourceMapRange;
     if (tokenSourceMapRanges) destEmitNode.tokenSourceMapRanges = mergeTokenSourceMapRanges(tokenSourceMapRanges, destEmitNode.tokenSourceMapRanges!);
diff --git a/src/compiler/factory/nodeTests.ts b/src/compiler/factory/nodeTests.ts
index 0d98989d39700..7a8405a4e9105 100644
--- a/src/compiler/factory/nodeTests.ts
+++ b/src/compiler/factory/nodeTests.ts
@@ -40,6 +40,7 @@ import {
     DebuggerStatement,
     Decorator,
     DefaultClause,
+    DefaultKeyword,
     DeleteExpression,
     DoStatement,
     DotDotDotToken,
@@ -333,6 +334,11 @@ export function isExportModifier(node: Node): node is ExportKeyword {
     return node.kind === SyntaxKind.ExportKeyword;
 }
 
+/** @internal */
+export function isDefaultModifier(node: Node): node is DefaultKeyword {
+    return node.kind === SyntaxKind.DefaultKeyword;
+}
+
 /** @internal */
 export function isAsyncModifier(node: Node): node is AsyncKeyword {
     return node.kind === SyntaxKind.AsyncKeyword;
diff --git a/src/compiler/factory/utilities.ts b/src/compiler/factory/utilities.ts
index 2db193390a873..6cfb47451ac5c 100644
--- a/src/compiler/factory/utilities.ts
+++ b/src/compiler/factory/utilities.ts
@@ -1,9 +1,11 @@
 import {
     AccessorDeclaration,
     addEmitFlags,
+    addInternalEmitFlags,
     AdditiveOperator,
     AdditiveOperatorOrHigher,
     AssertionLevel,
+    AssignmentExpression,
     AssignmentOperatorOrHigher,
     BinaryExpression,
     BinaryOperator,
@@ -20,8 +22,10 @@ import {
     CommaListExpression,
     compareStringsCaseSensitive,
     CompilerOptions,
+    ComputedPropertyName,
     Debug,
     Declaration,
+    DefaultKeyword,
     EmitFlags,
     EmitHelperFactory,
     EmitHost,
@@ -29,9 +33,11 @@ import {
     EntityName,
     EqualityOperator,
     EqualityOperatorOrHigher,
+    EqualsToken,
     ExclamationToken,
     ExponentiationOperator,
     ExportDeclaration,
+    ExportKeyword,
     Expression,
     ExpressionStatement,
     externalHelpersModuleNameText,
@@ -67,9 +73,11 @@ import {
     ImportCall,
     ImportDeclaration,
     ImportEqualsDeclaration,
+    InternalEmitFlags,
     isAssignmentExpression,
     isAssignmentOperator,
     isBlock,
+    isCommaListExpression,
     isComputedPropertyName,
     isDeclarationBindingElement,
     isDefaultImport,
@@ -84,6 +92,7 @@ import {
     isLiteralExpression,
     isMemberName,
     isMinusToken,
+    isModifierKind,
     isObjectLiteralElementLike,
     isParenthesizedExpression,
     isPlusToken,
@@ -109,6 +118,7 @@ import {
     JSDocTypeAssertion,
     JsxOpeningFragment,
     JsxOpeningLikeElement,
+    last,
     LeftHandSideExpression,
     LiteralExpression,
     LogicalOperator,
@@ -117,6 +127,7 @@ import {
     MemberExpression,
     MethodDeclaration,
     MinusToken,
+    Modifier,
     ModifiersArray,
     ModuleKind,
     ModuleName,
@@ -127,6 +138,7 @@ import {
     Node,
     NodeArray,
     NodeFactory,
+    nodeIsSynthesized,
     NullLiteral,
     NumericLiteral,
     ObjectLiteralElementLike,
@@ -135,6 +147,7 @@ import {
     OuterExpression,
     OuterExpressionKinds,
     outFile,
+    ParenthesizedExpression,
     parseNodeFactory,
     PlusToken,
     PostfixUnaryExpression,
@@ -187,7 +200,7 @@ export function createMemberAccessForPropertyName(factory: NodeFactory, target:
                 : factory.createElementAccessExpression(target, memberName),
             memberName
         );
-        getOrCreateEmitNode(expression).flags |= EmitFlags.NoNestedSourceMaps;
+        addEmitFlags(expression, EmitFlags.NoNestedSourceMaps);
         return expression;
     }
 }
@@ -598,10 +611,14 @@ export function startsWithUseStrict(statements: readonly Statement[]) {
         && isUseStrictPrologue(firstStatement);
 }
 
+/** @internal */
+export function isCommaExpression(node: Expression): node is BinaryExpression & { operatorToken: Token<SyntaxKind.CommaToken> } {
+    return node.kind === SyntaxKind.BinaryExpression && (node as BinaryExpression).operatorToken.kind === SyntaxKind.CommaToken;
+}
+
 /** @internal */
 export function isCommaSequence(node: Expression): node is BinaryExpression & {operatorToken: Token<SyntaxKind.CommaToken>} | CommaListExpression {
-    return node.kind === SyntaxKind.BinaryExpression && (node as BinaryExpression).operatorToken.kind === SyntaxKind.CommaToken ||
-        node.kind === SyntaxKind.CommaListExpression;
+    return isCommaExpression(node) || isCommaListExpression(node);
 }
 
 /** @internal */
@@ -628,6 +645,7 @@ export function isOuterExpression(node: Node, kinds = OuterExpressionKinds.All):
             return (kinds & OuterExpressionKinds.Parentheses) !== 0;
         case SyntaxKind.TypeAssertionExpression:
         case SyntaxKind.AsExpression:
+        case SyntaxKind.ExpressionWithTypeArguments:
         case SyntaxKind.SatisfiesExpression:
             return (kinds & OuterExpressionKinds.TypeAssertions) !== 0;
         case SyntaxKind.NonNullExpression:
@@ -650,6 +668,16 @@ export function skipOuterExpressions(node: Node, kinds = OuterExpressionKinds.Al
     return node;
 }
 
+/** @internal */
+export function walkUpOuterExpressions(node: Expression, kinds = OuterExpressionKinds.All): Node {
+    let parent = node.parent;
+    while (isOuterExpression(parent, kinds)) {
+        parent = parent.parent;
+        Debug.assert(parent);
+    }
+    return parent;
+}
+
 /** @internal */
 export function skipAssertions(node: Expression): Expression;
 /** @internal */
@@ -726,7 +754,7 @@ export function createExternalHelpersImportDeclarationIfNeeded(nodeFactory: Node
                 nodeFactory.createStringLiteral(externalHelpersModuleNameText),
                  /*assertClause*/ undefined
             );
-            addEmitFlags(externalHelpersImportDeclaration, EmitFlags.NeverApplyImportHelper);
+            addInternalEmitFlags(externalHelpersImportDeclaration, InternalEmitFlags.NeverApplyImportHelper);
             return externalHelpersImportDeclaration;
         }
     }
@@ -1469,6 +1497,22 @@ export function createBinaryExpressionTrampoline<TOuterState, TState, TResult>(
     }
 }
 
+function isExportOrDefaultKeywordKind(kind: SyntaxKind): kind is SyntaxKind.ExportKeyword | SyntaxKind.DefaultKeyword {
+    return kind === SyntaxKind.ExportKeyword || kind === SyntaxKind.DefaultKeyword;
+}
+
+/** @internal */
+export function isExportOrDefaultModifier(node: Node): node is ExportKeyword | DefaultKeyword {
+    const kind = node.kind;
+    return isExportOrDefaultKeywordKind(kind);
+}
+
+/** @internal */
+export function isNonExportDefaultModifier(node: Node): node is Exclude<Modifier, ExportKeyword | DefaultKeyword> {
+    const kind = node.kind;
+    return isModifierKind(kind) && !isExportOrDefaultKeywordKind(kind);
+}
+
 /**
  * If `nodes` is not undefined, creates an empty `NodeArray` that preserves the `pos` and `end` of `nodes`.
  * @internal
@@ -1573,7 +1617,6 @@ export function formatGeneratedName(privateName: boolean, prefix: string | Gener
     return `${privateName ? "#" : ""}${prefix}${baseName}${suffix}`;
 }
 
-
 /**
  * Creates a private backing field for an `accessor` {@link PropertyDeclaration}.
  *
@@ -1617,7 +1660,7 @@ export function createAccessorPropertyGetRedirector(factory: NodeFactory, node:
  *
  * @internal
  */
-export function createAccessorPropertySetRedirector(factory: NodeFactory, node: PropertyDeclaration, modifiers: ModifiersArray | undefined, name: PropertyName): SetAccessorDeclaration {
+export function createAccessorPropertySetRedirector(factory: NodeFactory, node: PropertyDeclaration, modifiers: ModifiersArray | undefined, name: PropertyName) {
     return factory.createSetAccessorDeclaration(
         modifiers,
         name,
@@ -1639,3 +1682,62 @@ export function createAccessorPropertySetRedirector(factory: NodeFactory, node:
         ])
     );
 }
+
+/** @internal */
+export function findComputedPropertyNameCacheAssignment(name: ComputedPropertyName) {
+    let node = name.expression;
+    while (true) {
+        node = skipOuterExpressions(node);
+        if (isCommaListExpression(node)) {
+            node = last(node.elements);
+            continue;
+        }
+
+        if (isCommaExpression(node)) {
+            node = node.right;
+            continue;
+        }
+
+        if (isAssignmentExpression(node, /*excludeCompoundAssignment*/ true) && isGeneratedIdentifier(node.left)) {
+            return node as AssignmentExpression<EqualsToken> & { readonly left: GeneratedIdentifier };
+        }
+
+        break;
+    }
+}
+
+function isSyntheticParenthesizedExpression(node: Expression): node is ParenthesizedExpression {
+    return isParenthesizedExpression(node)
+        && nodeIsSynthesized(node)
+        && !node.emitNode;
+}
+
+function flattenCommaListWorker(node: Expression, expressions: Expression[]) {
+    if (isSyntheticParenthesizedExpression(node)) {
+        flattenCommaListWorker(node.expression, expressions);
+    }
+    else if (isCommaExpression(node)) {
+        flattenCommaListWorker(node.left, expressions);
+        flattenCommaListWorker(node.right, expressions);
+    }
+    else if (isCommaListExpression(node)) {
+        for (const child of node.elements) {
+            flattenCommaListWorker(child, expressions);
+        }
+    }
+    else {
+        expressions.push(node);
+    }
+}
+
+/**
+ * Flatten a CommaExpression or CommaListExpression into an array of one or more expressions, unwrapping any nested
+ * comma expressions and synthetic parens.
+ *
+ * @internal
+ */
+export function flattenCommaList(node: Expression) {
+    const expressions: Expression[] = [];
+    flattenCommaListWorker(node, expressions);
+    return expressions;
+}
diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index e22fe45942ad4..b448910799401 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -89,6 +89,7 @@ import {
     fileExtensionIs,
     fileExtensionIsOneOf,
     findIndex,
+    firstOrUndefined,
     forEach,
     ForEachChildNodes,
     ForInOrOfStatement,
@@ -246,7 +247,6 @@ import {
     Modifier,
     ModifierFlags,
     ModifierLike,
-    ModifiersArray,
     modifiersToFlags,
     ModuleBlock,
     ModuleDeclaration,
@@ -503,8 +503,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.expression);
     },
     [SyntaxKind.ShorthandPropertyAssignment]: function forEachChildInShorthandPropertyAssignment<T>(node: ShorthandPropertyAssignment, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNode(cbNode, node.questionToken) ||
             visitNode(cbNode, node.exclamationToken) ||
@@ -538,8 +537,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.initializer);
     },
     [SyntaxKind.PropertyAssignment]: function forEachChildInPropertyAssignment<T>(node: PropertyAssignment, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNode(cbNode, node.questionToken) ||
             visitNode(cbNode, node.exclamationToken) ||
@@ -558,8 +556,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.initializer);
     },
     [SyntaxKind.IndexSignature]: function forEachChildInIndexSignature<T>(node: IndexSignatureDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNodes(cbNode, cbNodes, node.typeParameters) ||
             visitNodes(cbNode, cbNodes, node.parameters) ||
             visitNode(cbNode, node.type);
@@ -598,8 +595,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.type);
     },
     [SyntaxKind.Constructor]: function forEachChildInConstructor<T>(node: ConstructorDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNodes(cbNode, cbNodes, node.typeParameters) ||
             visitNodes(cbNode, cbNodes, node.parameters) ||
@@ -623,8 +619,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.body);
     },
     [SyntaxKind.FunctionDeclaration]: function forEachChildInFunctionDeclaration<T>(node: FunctionDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.asteriskToken) ||
             visitNode(cbNode, node.name) ||
             visitNodes(cbNode, cbNodes, node.typeParameters) ||
@@ -650,8 +645,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.body);
     },
     [SyntaxKind.ClassStaticBlockDeclaration]: function forEachChildInClassStaticBlockDeclaration<T>(node: ClassStaticBlockDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.body);
     },
     [SyntaxKind.TypeReference]: function forEachChildInTypeReference<T>(node: TypeReferenceNode, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
@@ -809,8 +803,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.endOfFileToken);
     },
     [SyntaxKind.VariableStatement]: function forEachChildInVariableStatement<T>(node: VariableStatement, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.declarationList);
     },
     [SyntaxKind.VariableDeclarationList]: function forEachChildInVariableDeclarationList<T>(node: VariableDeclarationList, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
@@ -894,23 +887,20 @@ const forEachChildTable: ForEachChildTable = {
     [SyntaxKind.ClassDeclaration]: forEachChildInClassDeclarationOrExpression,
     [SyntaxKind.ClassExpression]: forEachChildInClassDeclarationOrExpression,
     [SyntaxKind.InterfaceDeclaration]: function forEachChildInInterfaceDeclaration<T>(node: InterfaceDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNodes(cbNode, cbNodes, node.typeParameters) ||
             visitNodes(cbNode, cbNodes, node.heritageClauses) ||
             visitNodes(cbNode, cbNodes, node.members);
     },
     [SyntaxKind.TypeAliasDeclaration]: function forEachChildInTypeAliasDeclaration<T>(node: TypeAliasDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNodes(cbNode, cbNodes, node.typeParameters) ||
             visitNode(cbNode, node.type);
     },
     [SyntaxKind.EnumDeclaration]: function forEachChildInEnumDeclaration<T>(node: EnumDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNodes(cbNode, cbNodes, node.members);
     },
@@ -919,20 +909,17 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.initializer);
     },
     [SyntaxKind.ModuleDeclaration]: function forEachChildInModuleDeclaration<T>(node: ModuleDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNode(cbNode, node.body);
     },
     [SyntaxKind.ImportEqualsDeclaration]: function forEachChildInImportEqualsDeclaration<T>(node: ImportEqualsDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name) ||
             visitNode(cbNode, node.moduleReference);
     },
     [SyntaxKind.ImportDeclaration]: function forEachChildInImportDeclaration<T>(node: ImportDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.importClause) ||
             visitNode(cbNode, node.moduleSpecifier) ||
             visitNode(cbNode, node.assertClause);
@@ -949,7 +936,7 @@ const forEachChildTable: ForEachChildTable = {
             visitNode(cbNode, node.value);
     },
     [SyntaxKind.NamespaceExportDeclaration]: function forEachChildInNamespaceExportDeclaration<T>(node: NamespaceExportDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.name);
     },
     [SyntaxKind.NamespaceImport]: function forEachChildInNamespaceImport<T>(node: NamespaceImport, cbNode: (node: Node) => T | undefined, _cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
@@ -961,8 +948,7 @@ const forEachChildTable: ForEachChildTable = {
     [SyntaxKind.NamedImports]: forEachChildInNamedImportsOrExports,
     [SyntaxKind.NamedExports]: forEachChildInNamedImportsOrExports,
     [SyntaxKind.ExportDeclaration]: function forEachChildInExportDeclaration<T>(node: ExportDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.exportClause) ||
             visitNode(cbNode, node.moduleSpecifier) ||
             visitNode(cbNode, node.assertClause);
@@ -970,8 +956,7 @@ const forEachChildTable: ForEachChildTable = {
     [SyntaxKind.ImportSpecifier]: forEachChildInImportOrExportSpecifier,
     [SyntaxKind.ExportSpecifier]: forEachChildInImportOrExportSpecifier,
     [SyntaxKind.ExportAssignment]: function forEachChildInExportAssignment<T>(node: ExportAssignment, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers) ||
+        return visitNodes(cbNode, cbNodes, node.modifiers) ||
             visitNode(cbNode, node.expression);
     },
     [SyntaxKind.TemplateExpression]: function forEachChildInTemplateExpression<T>(node: TemplateExpression, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
@@ -1004,8 +989,7 @@ const forEachChildTable: ForEachChildTable = {
         return visitNode(cbNode, node.expression);
     },
     [SyntaxKind.MissingDeclaration]: function forEachChildInMissingDeclaration<T>(node: MissingDeclaration, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
-        return visitNodes(cbNode, cbNodes, node.illegalDecorators) ||
-            visitNodes(cbNode, cbNodes, node.modifiers);
+        return visitNodes(cbNode, cbNodes, node.modifiers);
     },
     [SyntaxKind.CommaListExpression]: function forEachChildInCommaListExpression<T>(node: CommaListExpression, cbNode: (node: Node) => T | undefined, cbNodes?: (nodes: NodeArray<Node>) => T | undefined): T | undefined {
         return visitNodes(cbNode, cbNodes, node.elements);
@@ -2712,7 +2696,8 @@ namespace Parser {
     }
 
     function canFollowExportModifier(): boolean {
-        return token() !== SyntaxKind.AsteriskToken
+        return token() === SyntaxKind.AtToken
+            || token() !== SyntaxKind.AsteriskToken
             && token() !== SyntaxKind.AsKeyword
             && token() !== SyntaxKind.OpenBraceToken
             && canFollowModifier();
@@ -2737,10 +2722,12 @@ namespace Parser {
 
     function nextTokenCanFollowDefaultKeyword(): boolean {
         nextToken();
-        return token() === SyntaxKind.ClassKeyword || token() === SyntaxKind.FunctionKeyword ||
-            token() === SyntaxKind.InterfaceKeyword ||
-            (token() === SyntaxKind.AbstractKeyword && lookAhead(nextTokenIsClassKeywordOnSameLine)) ||
-            (token() === SyntaxKind.AsyncKeyword && lookAhead(nextTokenIsFunctionKeywordOnSameLine));
+        return token() === SyntaxKind.ClassKeyword
+            || token() === SyntaxKind.FunctionKeyword
+            || token() === SyntaxKind.InterfaceKeyword
+            || token() === SyntaxKind.AtToken
+            || (token() === SyntaxKind.AbstractKeyword && lookAhead(nextTokenIsClassKeywordOnSameLine))
+            || (token() === SyntaxKind.AsyncKeyword && lookAhead(nextTokenIsFunctionKeywordOnSameLine));
     }
 
     // True if positioned at the start of a list element
@@ -3819,7 +3806,7 @@ namespace Parser {
 
     function parseTypeParameter(): TypeParameterDeclaration {
         const pos = getNodePos();
-        const modifiers = parseModifiers(/*permitConstAsModifier*/ true);
+        const modifiers = parseModifiers(/*allowDecorators*/ false, /*permitConstAsModifier*/ true);
         const name = parseIdentifier();
         let constraint: TypeNode | undefined;
         let expression: Expression | undefined;
@@ -3906,11 +3893,13 @@ namespace Parser {
         //      BindingElement[?Yield,?Await]
 
         // Decorators are parsed in the outer [Await] context, the rest of the parameter is parsed in the function's [Await] context.
-        const decorators = inOuterAwaitContext ? doInAwaitContext(parseDecorators) : doOutsideOfAwaitContext(parseDecorators);
+        const modifiers = inOuterAwaitContext ?
+            doInAwaitContext(() => parseModifiers(/*allowDecorators*/ true)) :
+            doOutsideOfAwaitContext(() => parseModifiers(/*allowDecorators*/ true));
 
         if (token() === SyntaxKind.ThisKeyword) {
             const node = factory.createParameterDeclaration(
-                decorators,
+                modifiers,
                 /*dotDotDotToken*/ undefined,
                 createIdentifier(/*isIdentifier*/ true),
                 /*questionToken*/ undefined,
@@ -3918,8 +3907,9 @@ namespace Parser {
                 /*initializer*/ undefined
             );
 
-            if (decorators) {
-                parseErrorAtRange(decorators[0], Diagnostics.Decorators_may_not_be_applied_to_this_parameters);
+            const modifier = firstOrUndefined(modifiers);
+            if (modifier) {
+                parseErrorAtRange(modifier, Diagnostics.Neither_decorators_nor_modifiers_may_be_applied_to_this_parameters);
             }
 
             return withJSDoc(finishNode(node, pos), hasJSDoc);
@@ -3928,7 +3918,6 @@ namespace Parser {
         const savedTopLevel = topLevel;
         topLevel = false;
 
-        const modifiers = combineDecoratorsAndModifiers(decorators, parseModifiers());
         const dotDotDotToken = parseOptionalToken(SyntaxKind.DotDotDotToken);
 
         if (!allowAmbiguity && !isParameterNameStart()) {
@@ -4120,12 +4109,11 @@ namespace Parser {
         return token() === SyntaxKind.ColonToken || token() === SyntaxKind.CommaToken || token() === SyntaxKind.CloseBracketToken;
     }
 
-    function parseIndexSignatureDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): IndexSignatureDeclaration {
+    function parseIndexSignatureDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): IndexSignatureDeclaration {
         const parameters = parseBracketedList<ParameterDeclaration>(ParsingContext.Parameters, () => parseParameter(/*inOuterAwaitContext*/ false), SyntaxKind.OpenBracketToken, SyntaxKind.CloseBracketToken);
         const type = parseTypeAnnotation();
         parseTypeMemberSemicolon();
         const node = factory.createIndexSignature(modifiers, parameters, type);
-        (node as Mutable<IndexSignatureDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
@@ -4198,17 +4186,17 @@ namespace Parser {
         }
         const pos = getNodePos();
         const hasJSDoc = hasPrecedingJSDocComment();
-        const modifiers = parseModifiers();
+        const modifiers = parseModifiers(/*allowDecorators*/ false);
         if (parseContextualModifier(SyntaxKind.GetKeyword)) {
-            return parseAccessorDeclaration(pos, hasJSDoc, /*decorators*/ undefined, modifiers, SyntaxKind.GetAccessor, SignatureFlags.Type);
+            return parseAccessorDeclaration(pos, hasJSDoc, modifiers, SyntaxKind.GetAccessor, SignatureFlags.Type);
         }
 
         if (parseContextualModifier(SyntaxKind.SetKeyword)) {
-            return parseAccessorDeclaration(pos, hasJSDoc, /*decorators*/ undefined, modifiers, SyntaxKind.SetAccessor, SignatureFlags.Type);
+            return parseAccessorDeclaration(pos, hasJSDoc, modifiers, SyntaxKind.SetAccessor, SignatureFlags.Type);
         }
 
         if (isIndexSignature()) {
-            return parseIndexSignatureDeclaration(pos, hasJSDoc, /*decorators*/ undefined, modifiers);
+            return parseIndexSignatureDeclaration(pos, hasJSDoc, modifiers);
         }
         return parsePropertyOrMethodSignature(pos, hasJSDoc, modifiers);
     }
@@ -4727,7 +4715,7 @@ namespace Parser {
     function skipParameterStart(): boolean {
         if (isModifierKind(token())) {
             // Skip modifiers
-            parseModifiers();
+            parseModifiers(/*allowDecorators*/ false);
         }
         if (isIdentifier() || token() === SyntaxKind.ThisKeyword) {
             nextToken();
@@ -4873,6 +4861,7 @@ namespace Parser {
             case SyntaxKind.AwaitKeyword:
             case SyntaxKind.YieldKeyword:
             case SyntaxKind.PrivateIdentifier:
+            case SyntaxKind.AtToken:
                 // Yield/await always starts an expression.  Either it is an identifier (in which case
                 // it is definitely an expression).  Or it's a keyword (either because we're in
                 // a generator or async function, or in strict mode (or both)) and it started a yield or await expression.
@@ -6436,6 +6425,8 @@ namespace Parser {
                 }
 
                 return parseFunctionExpression();
+            case SyntaxKind.AtToken:
+                return parseDecoratedExpression();
             case SyntaxKind.ClassKeyword:
                 return parseClassExpression();
             case SyntaxKind.FunctionKeyword:
@@ -6502,14 +6493,12 @@ namespace Parser {
             return withJSDoc(finishNode(factory.createSpreadAssignment(expression), pos), hasJSDoc);
         }
 
-        const decorators = parseDecorators();
-        const modifiers = parseModifiers();
-
+        const modifiers = parseModifiers(/*allowDecorators*/ true);
         if (parseContextualModifier(SyntaxKind.GetKeyword)) {
-            return parseAccessorDeclaration(pos, hasJSDoc, decorators, modifiers, SyntaxKind.GetAccessor, SignatureFlags.None);
+            return parseAccessorDeclaration(pos, hasJSDoc, modifiers, SyntaxKind.GetAccessor, SignatureFlags.None);
         }
         if (parseContextualModifier(SyntaxKind.SetKeyword)) {
-            return parseAccessorDeclaration(pos, hasJSDoc, decorators, modifiers, SyntaxKind.SetAccessor, SignatureFlags.None);
+            return parseAccessorDeclaration(pos, hasJSDoc, modifiers, SyntaxKind.SetAccessor, SignatureFlags.None);
         }
 
         const asteriskToken = parseOptionalToken(SyntaxKind.AsteriskToken);
@@ -6521,7 +6510,7 @@ namespace Parser {
         const exclamationToken = parseOptionalToken(SyntaxKind.ExclamationToken);
 
         if (asteriskToken || token() === SyntaxKind.OpenParenToken || token() === SyntaxKind.LessThanToken) {
-            return parseMethodDeclaration(pos, hasJSDoc, decorators, modifiers, asteriskToken, name, questionToken, exclamationToken);
+            return parseMethodDeclaration(pos, hasJSDoc, modifiers, asteriskToken, name, questionToken, exclamationToken);
         }
 
         // check if it is short-hand property assignment or normal property assignment
@@ -6545,7 +6534,6 @@ namespace Parser {
             node = factory.createPropertyAssignment(name, initializer);
         }
         // Decorators, Modifiers, questionToken, and exclamationToken are not supported by property assignments and are reported in the grammar checker
-        node.illegalDecorators = decorators;
         node.modifiers = modifiers;
         node.questionToken = questionToken;
         node.exclamationToken = exclamationToken;
@@ -6573,7 +6561,7 @@ namespace Parser {
 
         const pos = getNodePos();
         const hasJSDoc = hasPrecedingJSDocComment();
-        const modifiers = parseModifiers();
+        const modifiers = parseModifiers(/*allowDecorators*/ false);
         parseExpected(SyntaxKind.FunctionKeyword);
         const asteriskToken = parseOptionalToken(SyntaxKind.AsteriskToken);
         const isGenerator = asteriskToken ? SignatureFlags.Yield : SignatureFlags.None;
@@ -7028,7 +7016,7 @@ namespace Parser {
                     }
                     if (currentToken === SyntaxKind.EqualsToken || currentToken === SyntaxKind.AsteriskToken ||
                         currentToken === SyntaxKind.OpenBraceToken || currentToken === SyntaxKind.DefaultKeyword ||
-                        currentToken === SyntaxKind.AsKeyword) {
+                        currentToken === SyntaxKind.AsKeyword || currentToken === SyntaxKind.AtToken) {
                         return true;
                     }
                     continue;
@@ -7125,16 +7113,16 @@ namespace Parser {
             case SyntaxKind.OpenBraceToken:
                 return parseBlock(/*ignoreMissingOpenBrace*/ false);
             case SyntaxKind.VarKeyword:
-                return parseVariableStatement(getNodePos(), hasPrecedingJSDocComment(), /*decorators*/ undefined, /*modifiers*/ undefined);
+                return parseVariableStatement(getNodePos(), hasPrecedingJSDocComment(), /*modifiers*/ undefined);
             case SyntaxKind.LetKeyword:
                 if (isLetDeclaration()) {
-                    return parseVariableStatement(getNodePos(), hasPrecedingJSDocComment(), /*decorators*/ undefined, /*modifiers*/ undefined);
+                    return parseVariableStatement(getNodePos(), hasPrecedingJSDocComment(), /*modifiers*/ undefined);
                 }
                 break;
             case SyntaxKind.FunctionKeyword:
-                return parseFunctionDeclaration(getNodePos(), hasPrecedingJSDocComment(), /*decorators*/ undefined, /*modifiers*/ undefined);
+                return parseFunctionDeclaration(getNodePos(), hasPrecedingJSDocComment(), /*modifiers*/ undefined);
             case SyntaxKind.ClassKeyword:
-                return parseClassDeclaration(getNodePos(), hasPrecedingJSDocComment(), /*decorators*/ undefined, /*modifiers*/ undefined);
+                return parseClassDeclaration(getNodePos(), hasPrecedingJSDocComment(), /*modifiers*/ undefined);
             case SyntaxKind.IfKeyword:
                 return parseIfStatement();
             case SyntaxKind.DoKeyword:
@@ -7191,7 +7179,7 @@ namespace Parser {
         return parseExpressionOrLabeledStatement();
     }
 
-    function isDeclareModifier(modifier: Modifier) {
+    function isDeclareModifier(modifier: ModifierLike) {
         return modifier.kind === SyntaxKind.DeclareKeyword;
     }
 
@@ -7201,8 +7189,7 @@ namespace Parser {
         // not reusable in that context.
         const pos = getNodePos();
         const hasJSDoc = hasPrecedingJSDocComment();
-        const decorators = parseDecorators();
-        const modifiers = parseModifiers();
+        const modifiers = parseModifiers(/*allowDecorators*/ true);
         const isAmbient = some(modifiers, isDeclareModifier);
         if (isAmbient) {
             const node = tryReuseAmbientDeclaration(pos);
@@ -7213,10 +7200,10 @@ namespace Parser {
             for (const m of modifiers!) {
                 (m as Mutable<Node>).flags |= NodeFlags.Ambient;
             }
-            return doInsideOfContext(NodeFlags.Ambient, () => parseDeclarationWorker(pos, hasJSDoc, decorators, modifiers));
+            return doInsideOfContext(NodeFlags.Ambient, () => parseDeclarationWorker(pos, hasJSDoc, modifiers));
         }
         else {
-            return parseDeclarationWorker(pos, hasJSDoc, decorators, modifiers);
+            return parseDeclarationWorker(pos, hasJSDoc, modifiers);
         }
     }
 
@@ -7229,47 +7216,46 @@ namespace Parser {
         });
     }
 
-    function parseDeclarationWorker(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): Statement {
+    function parseDeclarationWorker(pos: number, hasJSDoc: boolean, modifiersIn: NodeArray<ModifierLike> | undefined): Statement {
         switch (token()) {
             case SyntaxKind.VarKeyword:
             case SyntaxKind.LetKeyword:
             case SyntaxKind.ConstKeyword:
-                return parseVariableStatement(pos, hasJSDoc, decorators, modifiers);
+                return parseVariableStatement(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.FunctionKeyword:
-                return parseFunctionDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseFunctionDeclaration(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.ClassKeyword:
-                return parseClassDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseClassDeclaration(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.InterfaceKeyword:
-                return parseInterfaceDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseInterfaceDeclaration(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.TypeKeyword:
-                return parseTypeAliasDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseTypeAliasDeclaration(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.EnumKeyword:
-                return parseEnumDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseEnumDeclaration(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.GlobalKeyword:
             case SyntaxKind.ModuleKeyword:
             case SyntaxKind.NamespaceKeyword:
-                return parseModuleDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseModuleDeclaration(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.ImportKeyword:
-                return parseImportDeclarationOrImportEqualsDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseImportDeclarationOrImportEqualsDeclaration(pos, hasJSDoc, modifiersIn);
             case SyntaxKind.ExportKeyword:
                 nextToken();
                 switch (token()) {
                     case SyntaxKind.DefaultKeyword:
                     case SyntaxKind.EqualsToken:
-                        return parseExportAssignment(pos, hasJSDoc, decorators, modifiers);
+                        return parseExportAssignment(pos, hasJSDoc, modifiersIn);
                     case SyntaxKind.AsKeyword:
-                        return parseNamespaceExportDeclaration(pos, hasJSDoc, decorators, modifiers);
+                        return parseNamespaceExportDeclaration(pos, hasJSDoc, modifiersIn);
                     default:
-                        return parseExportDeclaration(pos, hasJSDoc, decorators, modifiers);
+                        return parseExportDeclaration(pos, hasJSDoc, modifiersIn);
                 }
             default:
-                if (decorators || modifiers) {
+                if (modifiersIn) {
                     // We reached this point because we encountered decorators and/or modifiers and assumed a declaration
                     // would follow. For recovery and error reporting purposes, return an incomplete declaration.
                     const missing = createMissingNode<MissingDeclaration>(SyntaxKind.MissingDeclaration, /*reportAtCurrentPosition*/ true, Diagnostics.Declaration_expected);
                     setTextRangePos(missing, pos);
-                    missing.illegalDecorators = decorators;
-                    missing.modifiers = modifiers;
+                    (missing as Mutable<MissingDeclaration>).modifiers = modifiersIn;
                     return missing;
                 }
                 return undefined!; // TODO: GH#18217
@@ -7427,18 +7413,15 @@ namespace Parser {
         return nextTokenIsIdentifier() && nextToken() === SyntaxKind.CloseParenToken;
     }
 
-    function parseVariableStatement(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): VariableStatement {
+    function parseVariableStatement(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): VariableStatement {
         const declarationList = parseVariableDeclarationList(/*inForStatementInitializer*/ false);
         parseSemicolon();
         const node = factory.createVariableStatement(modifiers, declarationList);
-        // Decorators are not allowed on a variable statement, so we keep track of them to report them in the grammar checker.
-        node.illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
-    function parseFunctionDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): FunctionDeclaration {
+    function parseFunctionDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): FunctionDeclaration {
         const savedAwaitContext = inAwaitContext();
-
         const modifierFlags = modifiersToFlags(modifiers);
         parseExpected(SyntaxKind.FunctionKeyword);
         const asteriskToken = parseOptionalToken(SyntaxKind.AsteriskToken);
@@ -7453,7 +7436,6 @@ namespace Parser {
         const body = parseFunctionBlockOrSemicolon(isGenerator | isAsync, Diagnostics.or_expected);
         setAwaitContext(savedAwaitContext);
         const node = factory.createFunctionDeclaration(modifiers, asteriskToken, name, typeParameters, parameters, type, body);
-        (node as Mutable<FunctionDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
@@ -7469,7 +7451,7 @@ namespace Parser {
         }
     }
 
-    function tryParseConstructorDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): ConstructorDeclaration | undefined {
+    function tryParseConstructorDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): ConstructorDeclaration | undefined {
         return tryParse(() => {
             if (parseConstructorName()) {
                 const typeParameters = parseTypeParameters();
@@ -7479,7 +7461,6 @@ namespace Parser {
                 const node = factory.createConstructorDeclaration(modifiers, parameters, body);
 
                 // Attach invalid nodes if they exist so that we can report them in the grammar checker.
-                (node as Mutable<ConstructorDeclaration>).illegalDecorators = decorators;
                 (node as Mutable<ConstructorDeclaration>).typeParameters = typeParameters;
                 (node as Mutable<ConstructorDeclaration>).type = type;
                 return withJSDoc(finishNode(node, pos), hasJSDoc);
@@ -7490,8 +7471,7 @@ namespace Parser {
     function parseMethodDeclaration(
         pos: number,
         hasJSDoc: boolean,
-        decorators: NodeArray<Decorator> | undefined,
-        modifiers: NodeArray<Modifier> | undefined,
+        modifiers: NodeArray<ModifierLike> | undefined,
         asteriskToken: AsteriskToken | undefined,
         name: PropertyName,
         questionToken: QuestionToken | undefined,
@@ -7505,7 +7485,7 @@ namespace Parser {
         const type = parseReturnType(SyntaxKind.ColonToken, /*isType*/ false);
         const body = parseFunctionBlockOrSemicolon(isGenerator | isAsync, diagnosticMessage);
         const node = factory.createMethodDeclaration(
-            combineDecoratorsAndModifiers(decorators, modifiers),
+            modifiers,
             asteriskToken,
             name,
             questionToken,
@@ -7523,8 +7503,7 @@ namespace Parser {
     function parsePropertyDeclaration(
         pos: number,
         hasJSDoc: boolean,
-        decorators: NodeArray<Decorator> | undefined,
-        modifiers: NodeArray<Modifier> | undefined,
+        modifiers: NodeArray<ModifierLike> | undefined,
         name: PropertyName,
         questionToken: QuestionToken | undefined
     ): PropertyDeclaration {
@@ -7533,7 +7512,7 @@ namespace Parser {
         const initializer = doOutsideOfContext(NodeFlags.YieldContext | NodeFlags.AwaitContext | NodeFlags.DisallowInContext, parseInitializer);
         parseSemicolonAfterPropertyName(name, type, initializer);
         const node = factory.createPropertyDeclaration(
-            combineDecoratorsAndModifiers(decorators, modifiers),
+            modifiers,
             name,
             questionToken || exclamationToken,
             type,
@@ -7544,8 +7523,7 @@ namespace Parser {
     function parsePropertyOrMethodDeclaration(
         pos: number,
         hasJSDoc: boolean,
-        decorators: NodeArray<Decorator> | undefined,
-        modifiers: NodeArray<Modifier> | undefined
+        modifiers: NodeArray<ModifierLike> | undefined
     ): PropertyDeclaration | MethodDeclaration {
         const asteriskToken = parseOptionalToken(SyntaxKind.AsteriskToken);
         const name = parsePropertyName();
@@ -7553,20 +7531,20 @@ namespace Parser {
         // report an error in the grammar checker.
         const questionToken = parseOptionalToken(SyntaxKind.QuestionToken);
         if (asteriskToken || token() === SyntaxKind.OpenParenToken || token() === SyntaxKind.LessThanToken) {
-            return parseMethodDeclaration(pos, hasJSDoc, decorators, modifiers, asteriskToken, name, questionToken, /*exclamationToken*/ undefined, Diagnostics.or_expected);
+            return parseMethodDeclaration(pos, hasJSDoc, modifiers, asteriskToken, name, questionToken, /*exclamationToken*/ undefined, Diagnostics.or_expected);
         }
-        return parsePropertyDeclaration(pos, hasJSDoc, decorators, modifiers, name, questionToken);
+        return parsePropertyDeclaration(pos, hasJSDoc, modifiers, name, questionToken);
     }
 
-    function parseAccessorDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined, kind: AccessorDeclaration["kind"], flags: SignatureFlags): AccessorDeclaration {
+    function parseAccessorDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined, kind: AccessorDeclaration["kind"], flags: SignatureFlags): AccessorDeclaration {
         const name = parsePropertyName();
         const typeParameters = parseTypeParameters();
         const parameters = parseParameters(SignatureFlags.None);
         const type = parseReturnType(SyntaxKind.ColonToken, /*isType*/ false);
         const body = parseFunctionBlockOrSemicolon(flags);
         const node = kind === SyntaxKind.GetAccessor
-            ? factory.createGetAccessorDeclaration(combineDecoratorsAndModifiers(decorators, modifiers), name, parameters, type, body)
-            : factory.createSetAccessorDeclaration(combineDecoratorsAndModifiers(decorators, modifiers), name, parameters, body);
+            ? factory.createGetAccessorDeclaration(modifiers, name, parameters, type, body)
+            : factory.createSetAccessorDeclaration(modifiers, name, parameters, body);
         // Keep track of `typeParameters` (for both) and `type` (for setters) if they were parsed those indicate grammar errors
         (node as Mutable<AccessorDeclaration>).typeParameters = typeParameters;
         if (isSetAccessorDeclaration(node)) (node as Mutable<SetAccessorDeclaration>).type = type;
@@ -7642,11 +7620,10 @@ namespace Parser {
         return false;
     }
 
-    function parseClassStaticBlockDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: ModifiersArray | undefined): ClassStaticBlockDeclaration {
+    function parseClassStaticBlockDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): ClassStaticBlockDeclaration {
         parseExpectedToken(SyntaxKind.StaticKeyword);
         const body = parseClassStaticBlockBody();
         const node = withJSDoc(finishNode(factory.createClassStaticBlockDeclaration(body), pos), hasJSDoc);
-        (node as Mutable<ClassStaticBlockDeclaration>).illegalDecorators = decorators;
         (node as Mutable<ClassStaticBlockDeclaration>).modifiers = modifiers;
         return node;
     }
@@ -7688,16 +7665,7 @@ namespace Parser {
         return finishNode(factory.createDecorator(expression), pos);
     }
 
-    function parseDecorators(): NodeArray<Decorator> | undefined {
-        const pos = getNodePos();
-        let list, decorator;
-        while (decorator = tryParseDecorator()) {
-            list = append(list, decorator);
-        }
-        return list && createNodeArray(list, pos);
-    }
-
-    function tryParseModifier(permitConstAsModifier?: boolean, stopOnStartOfClassStaticBlock?: boolean, hasSeenStaticModifier?: boolean): Modifier | undefined {
+    function tryParseModifier(hasSeenStaticModifier: boolean, permitConstAsModifier?: boolean, stopOnStartOfClassStaticBlock?: boolean): Modifier | undefined {
         const pos = getNodePos();
         const kind = token();
 
@@ -7723,28 +7691,38 @@ namespace Parser {
         return finishNode(factory.createToken(kind as Modifier["kind"]), pos);
     }
 
-    function combineDecoratorsAndModifiers(decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): NodeArray<ModifierLike> | undefined {
-        if (!decorators) return modifiers;
-        if (!modifiers) return decorators;
-        const decoratorsAndModifiers = factory.createNodeArray(concatenate<ModifierLike>(decorators, modifiers));
-        setTextRangePosEnd(decoratorsAndModifiers, decorators.pos, modifiers.end);
-        return decoratorsAndModifiers;
-    }
-
     /*
-     * There are situations in which a modifier like 'const' will appear unexpectedly, such as on a class member.
-     * In those situations, if we are entirely sure that 'const' is not valid on its own (such as when ASI takes effect
-     * and turns it into a standalone declaration), then it is better to parse it and report an error later.
-     *
-     * In such situations, 'permitConstAsModifier' should be set to true.
-     */
-    function parseModifiers(permitConstAsModifier?: boolean, stopOnStartOfClassStaticBlock?: boolean): NodeArray<Modifier> | undefined {
+        * There are situations in which a modifier like 'const' will appear unexpectedly, such as on a class member.
+        * In those situations, if we are entirely sure that 'const' is not valid on its own (such as when ASI takes effect
+        * and turns it into a standalone declaration), then it is better to parse it and report an error later.
+        *
+        * In such situations, 'permitConstAsModifier' should be set to true.
+        */
+    function parseModifiers(allowDecorators: false, permitConstAsModifier?: boolean, stopOnStartOfClassStaticBlock?: boolean): NodeArray<Modifier> | undefined;
+    function parseModifiers(allowDecorators: true, permitConstAsModifier?: boolean, stopOnStartOfClassStaticBlock?: boolean): NodeArray<ModifierLike> | undefined;
+    function parseModifiers(allowDecorators: boolean, permitConstAsModifier?: boolean, stopOnStartOfClassStaticBlock?: boolean): NodeArray<ModifierLike> | undefined {
         const pos = getNodePos();
-        let list, modifier, hasSeenStatic = false;
-        while (modifier = tryParseModifier(permitConstAsModifier, stopOnStartOfClassStaticBlock, hasSeenStatic)) {
-            if (modifier.kind === SyntaxKind.StaticKeyword) hasSeenStatic = true;
+        let list: ModifierLike[] | undefined;
+        let modifier, hasSeenStaticModifier = false;
+        while (modifier = tryParseModifier(hasSeenStaticModifier, permitConstAsModifier, stopOnStartOfClassStaticBlock)) {
+            if (modifier.kind === SyntaxKind.StaticKeyword) hasSeenStaticModifier = true;
             list = append(list, modifier);
         }
+
+        // Decorators should be contiguous in a list of modifiers (i.e., `[...leadingModifiers, ...decorators, ...trailingModifiers]`).
+        // The leading modifiers *should* only contain `export` and `default` when decorators are present, but we'll handle errors for any other leading modifiers in the checker.
+        if (allowDecorators && token() === SyntaxKind.AtToken) {
+            let decorator;
+            while (decorator = tryParseDecorator()) {
+                list = append(list, decorator);
+            }
+
+            while (modifier = tryParseModifier(hasSeenStaticModifier, permitConstAsModifier, stopOnStartOfClassStaticBlock)) {
+                if (modifier.kind === SyntaxKind.StaticKeyword) hasSeenStaticModifier = true;
+                list = append(list, modifier);
+            }
+        }
+
         return list && createNodeArray(list, pos);
     }
 
@@ -7767,29 +7745,28 @@ namespace Parser {
         }
 
         const hasJSDoc = hasPrecedingJSDocComment();
-        const decorators = parseDecorators();
-        const modifiers = parseModifiers(/*permitConstAsModifier*/ true, /*stopOnStartOfClassStaticBlock*/ true);
+        const modifiers = parseModifiers(/*allowDecorators*/ true, /*permitConstAsModifier*/ true, /*stopOnStartOfClassStaticBlock*/ true);
         if (token() === SyntaxKind.StaticKeyword && lookAhead(nextTokenIsOpenBrace)) {
-            return parseClassStaticBlockDeclaration(pos, hasJSDoc, decorators, modifiers);
+            return parseClassStaticBlockDeclaration(pos, hasJSDoc, modifiers);
         }
 
         if (parseContextualModifier(SyntaxKind.GetKeyword)) {
-            return parseAccessorDeclaration(pos, hasJSDoc, decorators, modifiers, SyntaxKind.GetAccessor, SignatureFlags.None);
+            return parseAccessorDeclaration(pos, hasJSDoc, modifiers, SyntaxKind.GetAccessor, SignatureFlags.None);
         }
 
         if (parseContextualModifier(SyntaxKind.SetKeyword)) {
-            return parseAccessorDeclaration(pos, hasJSDoc, decorators, modifiers, SyntaxKind.SetAccessor, SignatureFlags.None);
+            return parseAccessorDeclaration(pos, hasJSDoc, modifiers, SyntaxKind.SetAccessor, SignatureFlags.None);
         }
 
         if (token() === SyntaxKind.ConstructorKeyword || token() === SyntaxKind.StringLiteral) {
-            const constructorDeclaration = tryParseConstructorDeclaration(pos, hasJSDoc, decorators, modifiers);
+            const constructorDeclaration = tryParseConstructorDeclaration(pos, hasJSDoc, modifiers);
             if (constructorDeclaration) {
                 return constructorDeclaration;
             }
         }
 
         if (isIndexSignature()) {
-            return parseIndexSignatureDeclaration(pos, hasJSDoc, decorators, modifiers);
+            return parseIndexSignatureDeclaration(pos, hasJSDoc, modifiers);
         }
 
         // It is very important that we check this *after* checking indexers because
@@ -7804,32 +7781,46 @@ namespace Parser {
                 for (const m of modifiers!) {
                     (m as Mutable<Node>).flags |= NodeFlags.Ambient;
                 }
-                return doInsideOfContext(NodeFlags.Ambient, () => parsePropertyOrMethodDeclaration(pos, hasJSDoc, decorators, modifiers));
+                return doInsideOfContext(NodeFlags.Ambient, () => parsePropertyOrMethodDeclaration(pos, hasJSDoc, modifiers));
             }
             else {
-                return parsePropertyOrMethodDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parsePropertyOrMethodDeclaration(pos, hasJSDoc, modifiers);
             }
         }
 
-        if (decorators || modifiers) {
+        if (modifiers) {
             // treat this as a property declaration with a missing name.
             const name = createMissingNode<Identifier>(SyntaxKind.Identifier, /*reportAtCurrentPosition*/ true, Diagnostics.Declaration_expected);
-            return parsePropertyDeclaration(pos, hasJSDoc, decorators, modifiers, name, /*questionToken*/ undefined);
+            return parsePropertyDeclaration(pos, hasJSDoc, modifiers, name, /*questionToken*/ undefined);
         }
 
         // 'isClassMemberStart' should have hinted not to attempt parsing.
         return Debug.fail("Should not have attempted to parse class member declaration.");
     }
 
+    function parseDecoratedExpression(): PrimaryExpression {
+        const pos = getNodePos();
+        const hasJSDoc = hasPrecedingJSDocComment();
+        const modifiers = parseModifiers(/*allowDecorators*/ true);
+        if (token() === SyntaxKind.ClassKeyword) {
+            return parseClassDeclarationOrExpression(pos, hasJSDoc, modifiers, SyntaxKind.ClassExpression) as ClassExpression;
+        }
+
+        const missing = createMissingNode<MissingDeclaration>(SyntaxKind.MissingDeclaration, /*reportAtCurrentPosition*/ true, Diagnostics.Expression_expected);
+        setTextRangePos(missing, pos);
+        (missing as Mutable<MissingDeclaration>).modifiers = modifiers;
+        return missing;
+    }
+
     function parseClassExpression(): ClassExpression {
-        return parseClassDeclarationOrExpression(getNodePos(), hasPrecedingJSDocComment(), /*decorators*/ undefined, /*modifiers*/ undefined, SyntaxKind.ClassExpression) as ClassExpression;
+        return parseClassDeclarationOrExpression(getNodePos(), hasPrecedingJSDocComment(), /*modifiers*/ undefined, SyntaxKind.ClassExpression) as ClassExpression;
     }
 
-    function parseClassDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): ClassDeclaration {
-        return parseClassDeclarationOrExpression(pos, hasJSDoc, decorators, modifiers, SyntaxKind.ClassDeclaration) as ClassDeclaration;
+    function parseClassDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): ClassDeclaration {
+        return parseClassDeclarationOrExpression(pos, hasJSDoc, modifiers, SyntaxKind.ClassDeclaration) as ClassDeclaration;
     }
 
-    function parseClassDeclarationOrExpression(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined, kind: ClassLikeDeclaration["kind"]): ClassLikeDeclaration {
+    function parseClassDeclarationOrExpression(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined, kind: ClassLikeDeclaration["kind"]): ClassLikeDeclaration {
         const savedAwaitContext = inAwaitContext();
         parseExpected(SyntaxKind.ClassKeyword);
 
@@ -7851,8 +7842,8 @@ namespace Parser {
         }
         setAwaitContext(savedAwaitContext);
         const node = kind === SyntaxKind.ClassDeclaration
-            ? factory.createClassDeclaration(combineDecoratorsAndModifiers(decorators, modifiers), name, typeParameters, heritageClauses, members)
-            : factory.createClassExpression(combineDecoratorsAndModifiers(decorators, modifiers), name, typeParameters, heritageClauses, members);
+            ? factory.createClassDeclaration(modifiers, name, typeParameters, heritageClauses, members)
+            : factory.createClassExpression(modifiers, name, typeParameters, heritageClauses, members);
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
@@ -7914,18 +7905,17 @@ namespace Parser {
         return parseList(ParsingContext.ClassMembers, parseClassElement);
     }
 
-    function parseInterfaceDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): InterfaceDeclaration {
+    function parseInterfaceDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): InterfaceDeclaration {
         parseExpected(SyntaxKind.InterfaceKeyword);
         const name = parseIdentifier();
         const typeParameters = parseTypeParameters();
         const heritageClauses = parseHeritageClauses();
         const members = parseObjectTypeMembers();
         const node = factory.createInterfaceDeclaration(modifiers, name, typeParameters, heritageClauses, members);
-        (node as Mutable<InterfaceDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
-    function parseTypeAliasDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): TypeAliasDeclaration {
+    function parseTypeAliasDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): TypeAliasDeclaration {
         parseExpected(SyntaxKind.TypeKeyword);
         const name = parseIdentifier();
         const typeParameters = parseTypeParameters();
@@ -7933,7 +7923,6 @@ namespace Parser {
         const type = token() === SyntaxKind.IntrinsicKeyword && tryParse(parseKeywordAndNoDot) || parseType();
         parseSemicolon();
         const node = factory.createTypeAliasDeclaration(modifiers, name, typeParameters, type);
-        (node as Mutable<TypeAliasDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
@@ -7949,7 +7938,7 @@ namespace Parser {
         return withJSDoc(finishNode(factory.createEnumMember(name, initializer), pos), hasJSDoc);
     }
 
-    function parseEnumDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): EnumDeclaration {
+    function parseEnumDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): EnumDeclaration {
         parseExpected(SyntaxKind.EnumKeyword);
         const name = parseIdentifier();
         let members;
@@ -7961,7 +7950,6 @@ namespace Parser {
             members = createMissingList<EnumMember>();
         }
         const node = factory.createEnumDeclaration(modifiers, name, members);
-        (node as Mutable<EnumDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
@@ -7978,20 +7966,19 @@ namespace Parser {
         return finishNode(factory.createModuleBlock(statements), pos);
     }
 
-    function parseModuleOrNamespaceDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined, flags: NodeFlags): ModuleDeclaration {
+    function parseModuleOrNamespaceDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined, flags: NodeFlags): ModuleDeclaration {
         // If we are parsing a dotted namespace name, we want to
         // propagate the 'Namespace' flag across the names if set.
         const namespaceFlag = flags & NodeFlags.Namespace;
         const name = parseIdentifier();
         const body = parseOptional(SyntaxKind.DotToken)
-            ? parseModuleOrNamespaceDeclaration(getNodePos(), /*hasJSDoc*/ false, /*decorators*/ undefined, /*modifiers*/ undefined, NodeFlags.NestedNamespace | namespaceFlag) as NamespaceDeclaration
+            ? parseModuleOrNamespaceDeclaration(getNodePos(), /*hasJSDoc*/ false, /*modifiers*/ undefined, NodeFlags.NestedNamespace | namespaceFlag) as NamespaceDeclaration
             : parseModuleBlock();
         const node = factory.createModuleDeclaration(modifiers, name, body, flags);
-        (node as Mutable<ModuleDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
-    function parseAmbientExternalModuleDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): ModuleDeclaration {
+    function parseAmbientExternalModuleDeclaration(pos: number, hasJSDoc: boolean, modifiersIn: NodeArray<ModifierLike> | undefined): ModuleDeclaration {
         let flags: NodeFlags = 0;
         let name;
         if (token() === SyntaxKind.GlobalKeyword) {
@@ -8010,16 +7997,15 @@ namespace Parser {
         else {
             parseSemicolon();
         }
-        const node = factory.createModuleDeclaration(modifiers, name, body, flags);
-        (node as Mutable<ModuleDeclaration>).illegalDecorators = decorators;
+        const node = factory.createModuleDeclaration(modifiersIn, name, body, flags);
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
-    function parseModuleDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): ModuleDeclaration {
+    function parseModuleDeclaration(pos: number, hasJSDoc: boolean, modifiersIn: NodeArray<ModifierLike> | undefined): ModuleDeclaration {
         let flags: NodeFlags = 0;
         if (token() === SyntaxKind.GlobalKeyword) {
             // global augmentation
-            return parseAmbientExternalModuleDeclaration(pos, hasJSDoc, decorators, modifiers);
+            return parseAmbientExternalModuleDeclaration(pos, hasJSDoc, modifiersIn);
         }
         else if (parseOptional(SyntaxKind.NamespaceKeyword)) {
             flags |= NodeFlags.Namespace;
@@ -8027,10 +8013,10 @@ namespace Parser {
         else {
             parseExpected(SyntaxKind.ModuleKeyword);
             if (token() === SyntaxKind.StringLiteral) {
-                return parseAmbientExternalModuleDeclaration(pos, hasJSDoc, decorators, modifiers);
+                return parseAmbientExternalModuleDeclaration(pos, hasJSDoc, modifiersIn);
             }
         }
-        return parseModuleOrNamespaceDeclaration(pos, hasJSDoc, decorators, modifiers, flags);
+        return parseModuleOrNamespaceDeclaration(pos, hasJSDoc, modifiersIn, flags);
     }
 
     function isExternalModuleReference() {
@@ -8050,19 +8036,18 @@ namespace Parser {
         return nextToken() === SyntaxKind.SlashToken;
     }
 
-    function parseNamespaceExportDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): NamespaceExportDeclaration {
+    function parseNamespaceExportDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): NamespaceExportDeclaration {
         parseExpected(SyntaxKind.AsKeyword);
         parseExpected(SyntaxKind.NamespaceKeyword);
         const name = parseIdentifier();
         parseSemicolon();
         const node = factory.createNamespaceExportDeclaration(name);
         // NamespaceExportDeclaration nodes cannot have decorators or modifiers, so we attach them here so we can report them in the grammar checker
-        (node as Mutable<NamespaceExportDeclaration>).illegalDecorators = decorators;
         (node as Mutable<NamespaceExportDeclaration>).modifiers = modifiers;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
-    function parseImportDeclarationOrImportEqualsDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): ImportEqualsDeclaration | ImportDeclaration {
+    function parseImportDeclarationOrImportEqualsDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): ImportEqualsDeclaration | ImportDeclaration {
         parseExpected(SyntaxKind.ImportKeyword);
 
         const afterImportPos = scanner.getStartPos();
@@ -8083,7 +8068,7 @@ namespace Parser {
         }
 
         if (identifier && !tokenAfterImportedIdentifierDefinitelyProducesImportDeclaration()) {
-            return parseImportEqualsDeclaration(pos, hasJSDoc, decorators, modifiers, identifier, isTypeOnly);
+            return parseImportEqualsDeclaration(pos, hasJSDoc, modifiers, identifier, isTypeOnly);
         }
 
         // ImportDeclaration:
@@ -8106,7 +8091,6 @@ namespace Parser {
 
         parseSemicolon();
         const node = factory.createImportDeclaration(modifiers, importClause, moduleSpecifier, assertClause);
-        (node as Mutable<ImportDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
@@ -8154,12 +8138,11 @@ namespace Parser {
         return token() === SyntaxKind.CommaToken || token() === SyntaxKind.FromKeyword;
     }
 
-    function parseImportEqualsDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined, identifier: Identifier, isTypeOnly: boolean): ImportEqualsDeclaration {
+    function parseImportEqualsDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined, identifier: Identifier, isTypeOnly: boolean): ImportEqualsDeclaration {
         parseExpected(SyntaxKind.EqualsToken);
         const moduleReference = parseModuleReference();
         parseSemicolon();
         const node = factory.createImportEqualsDeclaration(modifiers, isTypeOnly, identifier, moduleReference);
-        (node as Mutable<ImportEqualsDeclaration>).illegalDecorators = decorators;
         const finished = withJSDoc(finishNode(node, pos), hasJSDoc);
         return finished;
     }
@@ -8337,7 +8320,7 @@ namespace Parser {
         return finishNode(factory.createNamespaceExport(parseIdentifierName()), pos);
     }
 
-    function parseExportDeclaration(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): ExportDeclaration {
+    function parseExportDeclaration(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): ExportDeclaration {
         const savedAwaitContext = inAwaitContext();
         setAwaitContext(/*value*/ true);
         let exportClause: NamedExportBindings | undefined;
@@ -8368,11 +8351,10 @@ namespace Parser {
         parseSemicolon();
         setAwaitContext(savedAwaitContext);
         const node = factory.createExportDeclaration(modifiers, isTypeOnly, exportClause, moduleSpecifier, assertClause);
-        (node as Mutable<ExportDeclaration>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
-    function parseExportAssignment(pos: number, hasJSDoc: boolean, decorators: NodeArray<Decorator> | undefined, modifiers: NodeArray<Modifier> | undefined): ExportAssignment {
+    function parseExportAssignment(pos: number, hasJSDoc: boolean, modifiers: NodeArray<ModifierLike> | undefined): ExportAssignment {
         const savedAwaitContext = inAwaitContext();
         setAwaitContext(/*value*/ true);
         let isExportEquals: boolean | undefined;
@@ -8386,7 +8368,6 @@ namespace Parser {
         parseSemicolon();
         setAwaitContext(savedAwaitContext);
         const node = factory.createExportAssignment(modifiers, isExportEquals, expression);
-        (node as Mutable<ExportAssignment>).illegalDecorators = decorators;
         return withJSDoc(finishNode(node, pos), hasJSDoc);
     }
 
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index 4bbe445845f80..f6876e221d17c 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -1,7 +1,7 @@
 import * as ts from "./_namespaces/ts";
 import {
     __String,
-    addEmitFlags,
+    addInternalEmitFlags,
     addRange,
     append,
     arrayFrom,
@@ -10,7 +10,8 @@ import {
     AssertClause,
     BuilderProgram,
     CancellationToken,
-    canHaveModifiers,
+    canHaveDecorators,
+    canHaveIllegalDecorators,
     chainDiagnosticMessages,
     changeExtension,
     changesAffectingProgramStructure,
@@ -65,7 +66,6 @@ import {
     directorySeparator,
     DirectoryStructureHost,
     emitFiles,
-    EmitFlags,
     EmitHost,
     EmitOnly,
     EmitResult,
@@ -90,6 +90,7 @@ import {
     FileReference,
     filter,
     find,
+    findIndex,
     firstDefined,
     firstDefinedIterator,
     flatMap,
@@ -164,6 +165,7 @@ import {
     ImportDeclaration,
     ImportOrExportSpecifier,
     InputFiles,
+    InternalEmitFlags,
     inverseJsxOptionMap,
     isAmbientModule,
     isAnyImportOrReExport,
@@ -171,9 +173,12 @@ import {
     isArrayLiteralExpression,
     isBuildInfoFile,
     isCheckJsEnabledForFile,
+    isClassDeclaration,
     isDeclarationFileName,
     isDecorator,
+    isDefaultModifier,
     isExportDeclaration,
+    isExportModifier,
     isExternalModule,
     isExternalModuleNameRelative,
     isIdentifierText,
@@ -188,6 +193,7 @@ import {
     isModifier,
     isModuleDeclaration,
     isObjectLiteralExpression,
+    isParameter,
     isPlainJsFile,
     isRequireCall,
     isRootedDiskPath,
@@ -2935,8 +2941,33 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
             }
 
             function walkArray(nodes: NodeArray<Node>, parent: Node) {
-                if (canHaveModifiers(parent) && parent.modifiers === nodes && some(nodes, isDecorator) && !options.experimentalDecorators) {
-                    diagnostics.push(createDiagnosticForNode(parent, Diagnostics.Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_in_your_tsconfig_or_jsconfig_to_remove_this_warning));
+                if (canHaveIllegalDecorators(parent)) {
+                    const decorator = find(parent.modifiers, isDecorator);
+                    if (decorator) {
+                        // report illegal decorator
+                        diagnostics.push(createDiagnosticForNode(decorator, Diagnostics.Decorators_are_not_valid_here));
+                    }
+                }
+                else if (canHaveDecorators(parent) && parent.modifiers) {
+                    const decoratorIndex = findIndex(parent.modifiers, isDecorator);
+                    if (decoratorIndex >= 0) {
+                        if (isParameter(parent) && !options.experimentalDecorators) {
+                            // report illegall decorator on parameter
+                            diagnostics.push(createDiagnosticForNode(parent.modifiers[decoratorIndex], Diagnostics.Decorators_are_not_valid_here));
+                        }
+                        else if (isClassDeclaration(parent)) {
+                            const exportIndex = findIndex(parent.modifiers, isExportModifier);
+                            const defaultIndex = findIndex(parent.modifiers, isDefaultModifier);
+                            if (exportIndex >= 0 && decoratorIndex < exportIndex) {
+                                // report illegal decorator before `export default`
+                                diagnostics.push(createDiagnosticForNode(parent.modifiers[decoratorIndex], Diagnostics.Decorators_must_come_after_export_or_export_default_in_JavaScript_files));
+                            }
+                            else if (defaultIndex >= 0 && decoratorIndex < defaultIndex) {
+                                // report illegal decorator before `export default`
+                                diagnostics.push(createDiagnosticForNode(parent.modifiers[decoratorIndex], Diagnostics.Decorators_are_not_valid_here));
+                            }
+                        }
+                    }
                 }
 
                 switch (parent.kind) {
@@ -3122,7 +3153,7 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
     function createSyntheticImport(text: string, file: SourceFile) {
         const externalHelpersModuleReference = factory.createStringLiteral(text);
         const importDecl = factory.createImportDeclaration(/*modifiers*/ undefined, /*importClause*/ undefined, externalHelpersModuleReference, /*assertClause*/ undefined);
-        addEmitFlags(importDecl, EmitFlags.NeverApplyImportHelper);
+        addInternalEmitFlags(importDecl, InternalEmitFlags.NeverApplyImportHelper);
         setParent(externalHelpersModuleReference, importDecl);
         setParent(importDecl, file);
         // explicitly unset the synthesized flag on these declarations so the checker API will answer questions about them
diff --git a/src/compiler/transformer.ts b/src/compiler/transformer.ts
index 456a23a065577..a5b250f40ab4f 100644
--- a/src/compiler/transformer.ts
+++ b/src/compiler/transformer.ts
@@ -27,6 +27,7 @@ import {
     getJSXTransformEnabled,
     getParseTreeNode,
     getSourceFileOfNode,
+    getUseDefineForClassFields,
     Identifier,
     isBundle,
     isSourceFile,
@@ -62,6 +63,7 @@ import {
     transformES2020,
     transformES2021,
     transformES5,
+    transformESDecorators,
     transformESNext,
     transformGenerators,
     transformJsx,
@@ -119,12 +121,20 @@ function getScriptTransformers(compilerOptions: CompilerOptions, customTransform
 
     const languageVersion = getEmitScriptTarget(compilerOptions);
     const moduleKind = getEmitModuleKind(compilerOptions);
+    const useDefineForClassFields = getUseDefineForClassFields(compilerOptions);
     const transformers: TransformerFactory<SourceFile | Bundle>[] = [];
 
     addRange(transformers, customTransformers && map(customTransformers.before, wrapScriptTransformerFactory));
 
     transformers.push(transformTypeScript);
-    transformers.push(transformLegacyDecorators);
+
+    if (compilerOptions.experimentalDecorators) {
+        transformers.push(transformLegacyDecorators);
+    }
+    else if (languageVersion < ScriptTarget.ESNext || !useDefineForClassFields) {
+        transformers.push(transformESDecorators);
+    }
+
     transformers.push(transformClassFields);
 
     if (getJSXTransformEnabled(compilerOptions)) {
diff --git a/src/compiler/transformers/classFields.ts b/src/compiler/transformers/classFields.ts
index 6a5a1a6aa52fc..a75271b8b57e3 100644
--- a/src/compiler/transformers/classFields.ts
+++ b/src/compiler/transformers/classFields.ts
@@ -1,14 +1,19 @@
 import {
     __String,
     AccessorDeclaration,
+    accessPrivateIdentifier as accessPrivateIdentifierCommon,
     addEmitFlags,
     addEmitHelpers,
     addRange,
+    AnonymousFunctionDefinition,
     append,
+    ArrayAssignmentElement,
+    AssignmentExpression,
     AssignmentOperator,
     AssignmentPattern,
     AutoAccessorPropertyDeclaration,
     BinaryExpression,
+    BindingElement,
     Bundle,
     CallExpression,
     chainBundle,
@@ -18,6 +23,7 @@ import {
     ClassLikeDeclaration,
     classOrConstructorParameterIsDecorated,
     ClassStaticBlockDeclaration,
+    CommaListExpression,
     compact,
     ComputedPropertyName,
     ConstructorDeclaration,
@@ -29,33 +35,36 @@ import {
     ElementAccessExpression,
     EmitFlags,
     EmitHint,
+    EqualsToken,
     expandPreOrPostfixIncrementOrDecrementExpression,
+    ExportAssignment,
     Expression,
     ExpressionStatement,
     ExpressionWithTypeArguments,
     factory,
     filter,
+    find,
+    findComputedPropertyNameCacheAssignment,
     findSuperStatementIndex,
+    flattenCommaList,
     ForStatement,
     GeneratedIdentifier,
     GeneratedIdentifierFlags,
     GeneratedNamePart,
-    GeneratedPrivateIdentifier,
     GetAccessorDeclaration,
     getCommentRange,
     getEffectiveBaseTypeNode,
     getEmitFlags,
     getEmitScriptTarget,
-    getInitializerOfBindingOrAssignmentElement,
+    getInternalEmitFlags,
     getNameOfDeclaration,
-    getNodeForGeneratedName,
     getNonAssignmentOperatorForCompoundAssignment,
     getOriginalNode,
     getOriginalNodeId,
+    getPrivateIdentifier,
     getProperties,
     getSourceMapRange,
     getStaticPropertiesAndClassStaticBlock,
-    getTargetOfBindingOrAssignmentElement,
     getUseDefineForClassFields,
     hasAbstractModifier,
     hasAccessorModifier,
@@ -64,22 +73,29 @@ import {
     hasSyntacticModifier,
     Identifier,
     InKeyword,
+    InternalEmitFlags,
     isAccessorModifier,
+    isArrayBindingOrAssignmentElement,
     isArrayLiteralExpression,
     isArrowFunction,
     isAssignmentExpression,
     isAutoAccessorPropertyDeclaration,
-    isBindingOrAssignmentElement,
+    isBindingName,
     isCallChain,
+    isCallToHelper,
     isClassDeclaration,
     isClassElement,
+    isClassExpression,
+    isClassLike,
     isClassStaticBlockDeclaration,
+    isCommaExpression,
     isCompoundAssignment,
     isComputedPropertyName,
     isConstructorDeclaration,
     isDestructuringAssignment,
     isElementAccessExpression,
     isExpression,
+    isExpressionStatement,
     isForInitializer,
     isGeneratedIdentifier,
     isGeneratedPrivateIdentifier,
@@ -88,12 +104,18 @@ import {
     isHeritageClause,
     isIdentifier,
     isInitializedProperty,
+    isLeftHandSideExpression,
     isMethodDeclaration,
     isModifier,
     isModifierLike,
+    isNamedEvaluation,
     isNonStaticMethodOrAccessorWithPrivateName,
+    isNumericLiteral,
     isObjectBindingOrAssignmentElement,
     isObjectLiteralElementLike,
+    isObjectLiteralExpression,
+    isOmittedExpression,
+    isParameter,
     isParameterPropertyDeclaration,
     isParenthesizedExpression,
     isPrefixUnaryExpression,
@@ -104,6 +126,7 @@ import {
     isPropertyAssignment,
     isPropertyDeclaration,
     isPropertyName,
+    isPropertyNameLiteral,
     isSetAccessor,
     isSetAccessorDeclaration,
     isShorthandPropertyAssignment,
@@ -117,39 +140,57 @@ import {
     isSuperProperty,
     isTemplateLiteral,
     isThisProperty,
+    isVoidExpression,
     LeftHandSideExpression,
+    LexicalEnvironment,
     map,
     MethodDeclaration,
     Modifier,
     ModifierFlags,
+    ModifierLike,
     moveRangePastModifiers,
     moveRangePos,
+    newPrivateEnvironment,
     Node,
     NodeCheckFlags,
     nodeIsSynthesized,
-    ObjectLiteralElementLike,
+    ObjectLiteralElement,
+    OmittedExpression,
+    ParameterDeclaration,
+    ParenthesizedExpression,
+    PartiallyEmittedExpression,
     PostfixUnaryExpression,
     PrefixUnaryExpression,
+    PrivateEnvironment,
     PrivateIdentifier,
+    PrivateIdentifierAccessorDeclaration,
+    PrivateIdentifierKind,
+    PrivateIdentifierMethodDeclaration,
     PrivateIdentifierPropertyAccessExpression,
     PrivateIdentifierPropertyDeclaration,
     PropertyAccessExpression,
+    PropertyAssignment,
     PropertyDeclaration,
     PropertyName,
+    removeAllComments,
     ScriptTarget,
     SetAccessorDeclaration,
     setCommentRange,
     setEmitFlags,
     setOriginalNode,
+    setPrivateIdentifier,
     setSourceMapRange,
     setSyntheticLeadingComments,
     setSyntheticTrailingComments,
     setTextRange,
+    ShorthandPropertyAssignment,
     skipOuterExpressions,
     skipParentheses,
     skipPartiallyEmittedExpressions,
     some,
     SourceFile,
+    SpreadAssignment,
+    SpreadElement,
     startOnNewLine,
     Statement,
     SuperProperty,
@@ -159,16 +200,19 @@ import {
     ThisExpression,
     TransformationContext,
     TransformFlags,
+    tryCast,
     tryGetTextOfPropertyName,
-    UnderscoreEscapedMap,
     unescapeLeadingUnderscores,
+    VariableDeclaration,
     VariableStatement,
     visitArray,
+    visitCommaListElements,
     visitEachChild,
     visitFunctionBody,
     visitIterationBody,
     visitNode,
     visitNodes,
+    Visitor,
     visitParameterList,
     VisitResult,
 } from "../_namespaces/ts";
@@ -186,13 +230,6 @@ const enum ClassPropertySubstitutionFlags {
     ClassStaticThisOrSuperReference = 1 << 1,
 }
 
-/** @internal */
-export const enum PrivateIdentifierKind {
-    Field = "f",
-    Method = "m",
-    Accessor = "a"
-}
-
 interface PrivateIdentifierInfoBase {
     /**
      * brandCheckIdentifier can contain:
@@ -235,10 +272,6 @@ interface PrivateIdentifierMethodInfo extends PrivateIdentifierInfoBase {
 interface PrivateIdentifierInstanceFieldInfo extends PrivateIdentifierInfoBase {
     kind: PrivateIdentifierKind.Field;
     isStatic: false;
-    /**
-     * Defined for ease of access when in a union with PrivateIdentifierStaticFieldInfo.
-     */
-    variableName: undefined;
 }
 
 interface PrivateIdentifierStaticFieldInfo extends PrivateIdentifierInfoBase {
@@ -250,42 +283,40 @@ interface PrivateIdentifierStaticFieldInfo extends PrivateIdentifierInfoBase {
     variableName: Identifier;
 }
 
-type PrivateIdentifierInfo =
-    | PrivateIdentifierMethodInfo
-    | PrivateIdentifierInstanceFieldInfo
-    | PrivateIdentifierStaticFieldInfo
-    | PrivateIdentifierAccessorInfo;
-
-interface PrivateIdentifierEnvironment {
+interface PrivateEnvironmentData {
     /**
      * Used for prefixing generated variable names.
      */
     className?: Identifier;
+
     /**
      * Used for brand check on private methods.
      */
     weakSetName?: Identifier;
-    /**
-     * A mapping of private names to information needed for transformation.
-     */
-    identifiers?: UnderscoreEscapedMap<PrivateIdentifierInfo>;
-    /**
-     * A mapping of generated private names to information needed for transformation.
-     */
-    generatedIdentifiers?: Map<Node, PrivateIdentifierInfo>;
 }
 
+interface UntransformedPrivateIdentifierInfo {
+    kind: "untransformed";
+}
+
+type PrivateIdentifierInfo =
+    | PrivateIdentifierMethodInfo
+    | PrivateIdentifierInstanceFieldInfo
+    | PrivateIdentifierStaticFieldInfo
+    | PrivateIdentifierAccessorInfo
+    | UntransformedPrivateIdentifierInfo;
+
 interface ClassLexicalEnvironment {
     facts: ClassFacts;
     /**
      * Used for brand checks on static members, and `this` references in static initializers
      */
     classConstructor: Identifier | undefined;
+    classThis: Identifier | undefined;
     /**
      * Used for `super` references in static initializers.
      */
     superClassReference: Identifier | undefined;
-    privateIdentifierEnvironment: PrivateIdentifierEnvironment | undefined;
 }
 
 const enum ClassFacts {
@@ -297,6 +328,9 @@ const enum ClassFacts {
     WillHoistInitializersToConstructor = 1 << 4,
 }
 
+type LexicalEnv = LexicalEnvironment<ClassLexicalEnvironment | undefined, PrivateEnvironmentData, PrivateIdentifierInfo>;
+type PrivateEnv = PrivateEnvironment<PrivateEnvironmentData, PrivateIdentifierInfo>;
+
 /**
  * Transforms ECMAScript Class Syntax.
  * TypeScript parameter property syntax is transformed in the TypeScript transformer.
@@ -309,6 +343,7 @@ const enum ClassFacts {
 export function transformClassFields(context: TransformationContext): (x: SourceFile | Bundle) => SourceFile | Bundle {
     const {
         factory,
+        getEmitHelperFactory: emitHelpers,
         hoistVariableDeclaration,
         endLexicalEnvironment,
         startLexicalEnvironment,
@@ -319,6 +354,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     const compilerOptions = context.getCompilerOptions();
     const languageVersion = getEmitScriptTarget(compilerOptions);
     const useDefineForClassFields = getUseDefineForClassFields(compilerOptions);
+    const legacyDecorators = !!compilerOptions.experimentalDecorators;
 
     // Always transform field initializers using Set semantics when `useDefineForClassFields: false`.
     const shouldTransformInitializersUsingSet = !useDefineForClassFields;
@@ -356,6 +392,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     const previousOnEmitNode = context.onEmitNode;
     context.onEmitNode = onEmitNode;
 
+    let shouldTransformPrivateStaticElementsInFile = false;
     let enabledSubstitutions: ClassPropertySubstitutionFlags;
 
     let classAliases: Identifier[];
@@ -372,18 +409,24 @@ export function transformClassFields(context: TransformationContext): (x: Source
      */
     let pendingStatements: Statement[] | undefined;
 
-    const classLexicalEnvironmentStack: (ClassLexicalEnvironment | undefined)[] = [];
-    const classLexicalEnvironmentMap = new Map<number, ClassLexicalEnvironment>();
+    let lexicalEnvironment: LexicalEnv | undefined;
+    const lexicalEnvironmentMap = new Map<Node, LexicalEnv>();
 
-    let currentClassLexicalEnvironment: ClassLexicalEnvironment | undefined;
     let currentClassContainer: ClassLikeDeclaration | undefined;
-    let currentComputedPropertyNameClassLexicalEnvironment: ClassLexicalEnvironment | undefined;
     let currentStaticPropertyDeclarationOrStaticBlock: PropertyDeclaration | ClassStaticBlockDeclaration | undefined;
+    let shouldSubstituteThisWithClassThis = false;
+    let previousShouldSubstituteThisWithClassThis = false;
 
     return chainBundle(context, transformSourceFile);
 
     function transformSourceFile(node: SourceFile) {
-        if (node.isDeclarationFile || !shouldTransformAnything) {
+        if (node.isDeclarationFile) {
+            return node;
+        }
+
+        lexicalEnvironment = undefined;
+        shouldTransformPrivateStaticElementsInFile = !!(getInternalEmitFlags(node) & InternalEmitFlags.TransformPrivateStaticElements);
+        if (!shouldTransformAnything && !shouldTransformPrivateStaticElementsInFile) {
             return node;
         }
 
@@ -392,7 +435,16 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return visited;
     }
 
-    function visitor(node: Node): VisitResult<Node | undefined> {
+    function modifierVisitor(node: ModifierLike): VisitResult<Modifier | undefined> {
+        switch (node.kind) {
+            case SyntaxKind.AccessorKeyword:
+                return shouldTransformAutoAccessorsInCurrentClass() ? undefined : node;
+            default:
+                return tryCast(node, isModifier);
+        }
+    }
+
+    function visitor(node: Node): VisitResult<Node> {
         if (!(node.transformFlags & TransformFlags.ContainsClassFields) &&
             !(node.transformFlags & TransformFlags.ContainsLexicalThisOrSuper)) {
             return node;
@@ -400,17 +452,26 @@ export function transformClassFields(context: TransformationContext): (x: Source
 
         switch (node.kind) {
             case SyntaxKind.AccessorKeyword:
-                return shouldTransformAutoAccessorsInCurrentClass() ? undefined : node;
+                return Debug.fail("Use `modifierVisitor` instead.");
             case SyntaxKind.ClassDeclaration:
                 return visitClassDeclaration(node as ClassDeclaration);
             case SyntaxKind.ClassExpression:
-                return visitClassExpression(node as ClassExpression);
+                return visitClassExpression(node as ClassExpression, /*referencedName*/ undefined);
             case SyntaxKind.ClassStaticBlockDeclaration:
-                return visitClassStaticBlockDeclaration(node as ClassStaticBlockDeclaration);
             case SyntaxKind.PropertyDeclaration:
-                return visitPropertyDeclaration(node as PropertyDeclaration);
+                return Debug.fail("Use `classElementVisitor` instead.");
+            case SyntaxKind.PropertyAssignment:
+                return visitPropertyAssignment(node as PropertyAssignment);
             case SyntaxKind.VariableStatement:
                 return visitVariableStatement(node as VariableStatement);
+            case SyntaxKind.VariableDeclaration:
+                return visitVariableDeclaration(node as VariableDeclaration);
+            case SyntaxKind.Parameter:
+                return visitParameterDeclaration(node as ParameterDeclaration);
+            case SyntaxKind.BindingElement:
+                return visitBindingElement(node as BindingElement);
+            case SyntaxKind.ExportAssignment:
+                return visitExportAssignment(node as ExportAssignment);
             case SyntaxKind.PrivateIdentifier:
                 return visitPrivateIdentifier(node as PrivateIdentifier);
             case SyntaxKind.PropertyAccessExpression:
@@ -419,9 +480,11 @@ export function transformClassFields(context: TransformationContext): (x: Source
                 return visitElementAccessExpression(node as ElementAccessExpression);
             case SyntaxKind.PrefixUnaryExpression:
             case SyntaxKind.PostfixUnaryExpression:
-                return visitPreOrPostfixUnaryExpression(node as PrefixUnaryExpression | PostfixUnaryExpression, /*valueIsDiscarded*/ false);
+                return visitPreOrPostfixUnaryExpression(node as PrefixUnaryExpression | PostfixUnaryExpression, /*discarded*/ false);
             case SyntaxKind.BinaryExpression:
-                return visitBinaryExpression(node as BinaryExpression, /*valueIsDiscarded*/ false);
+                return visitBinaryExpression(node as BinaryExpression, /*discarded*/ false);
+            case SyntaxKind.ParenthesizedExpression:
+                return visitParenthesizedExpression(node as ParenthesizedExpression, /*discarded*/ false, /*referencedName*/ undefined);
             case SyntaxKind.CallExpression:
                 return visitCallExpression(node as CallExpression);
             case SyntaxKind.ExpressionStatement:
@@ -452,16 +515,33 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return visitEachChild(node, visitor, context);
     }
 
+    function namedEvaluationVisitor(node: Node, referencedName: Expression): VisitResult<Node> {
+        switch (node.kind) {
+            case SyntaxKind.PartiallyEmittedExpression:
+                return visitPartiallyEmittedExpression(node as PartiallyEmittedExpression, /*discarded*/ false, referencedName);
+            case SyntaxKind.ParenthesizedExpression:
+                return visitParenthesizedExpression(node as ParenthesizedExpression, /*discarded*/ false, referencedName);
+            case SyntaxKind.ClassExpression:
+                return visitClassExpression(node as ClassExpression, referencedName);
+            default:
+                return visitor(node);
+        }
+    }
+
     /**
      * Visits a node in an expression whose result is discarded.
      */
-    function discardedValueVisitor(node: Node): VisitResult<Node | undefined> {
+    function discardedValueVisitor(node: Node): VisitResult<Node> {
         switch (node.kind) {
             case SyntaxKind.PrefixUnaryExpression:
             case SyntaxKind.PostfixUnaryExpression:
-                return visitPreOrPostfixUnaryExpression(node as PrefixUnaryExpression | PostfixUnaryExpression, /*valueIsDiscarded*/ true);
+                return visitPreOrPostfixUnaryExpression(node as PrefixUnaryExpression | PostfixUnaryExpression, /*discarded*/ true);
             case SyntaxKind.BinaryExpression:
-                return visitBinaryExpression(node as BinaryExpression, /*valueIsDiscarded*/ true);
+                return visitBinaryExpression(node as BinaryExpression, /*discarded*/ true);
+            case SyntaxKind.CommaListExpression:
+                return visitCommaListExpression(node as CommaListExpression, /*discarded*/ true);
+            case SyntaxKind.ParenthesizedExpression:
+                return visitParenthesizedExpression(node as ParenthesizedExpression, /*discarded*/ true, /*referencedName*/ undefined);
             default:
                 return visitor(node);
         }
@@ -470,7 +550,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     /**
      * Visits a node in a {@link HeritageClause}.
      */
-    function heritageClauseVisitor(node: Node): VisitResult<Node | undefined> {
+    function heritageClauseVisitor(node: Node): VisitResult<Node> {
         switch (node.kind) {
             case SyntaxKind.HeritageClause:
                 return visitEachChild(node, heritageClauseVisitor, context);
@@ -484,7 +564,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     /**
      * Visits the assignment target of a destructuring assignment.
      */
-    function assignmentTargetVisitor(node: Node): VisitResult<Node | undefined> {
+    function assignmentTargetVisitor(node: Node): VisitResult<Node> {
         switch (node.kind) {
             case SyntaxKind.ObjectLiteralExpression:
             case SyntaxKind.ArrayLiteralExpression:
@@ -513,10 +593,24 @@ export function transformClassFields(context: TransformationContext): (x: Source
                     /*current*/ undefined,
                     visitPropertyDeclaration,
                     node as PropertyDeclaration);
+            case SyntaxKind.ClassStaticBlockDeclaration:
+                return visitClassStaticBlockDeclaration(node as ClassStaticBlockDeclaration);
             case SyntaxKind.ComputedPropertyName:
                 return visitComputedPropertyName(node as ComputedPropertyName);
             case SyntaxKind.SemicolonClassElement:
                 return node;
+            default:
+                return isModifierLike(node) ? modifierVisitor(node) : visitor(node);
+        }
+    }
+
+    /**
+     * Visits a property name of a class member.
+     */
+    function propertyNameVisitor(node: Node): VisitResult<Node> {
+        switch (node.kind) {
+            case SyntaxKind.ComputedPropertyName:
+                return visitComputedPropertyName(node as ComputedPropertyName);
             default:
                 return visitor(node);
         }
@@ -554,13 +648,6 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return setOriginalNode(factory.createIdentifier(""), node);
     }
 
-    type PrivateIdentifierInExpression = BinaryExpression & { readonly left: PrivateIdentifier, readonly token: InKeyword };
-
-    function isPrivateIdentifierInExpression(node: BinaryExpression): node is PrivateIdentifierInExpression {
-        return isPrivateIdentifier(node.left)
-            && node.operatorToken.kind === SyntaxKind.InKeyword;
-    }
-
     /**
      * Visits `#id in expr`
      */
@@ -568,10 +655,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
         const info = accessPrivateIdentifier(node.left);
         if (info) {
             const receiver = visitNode(node.right, visitor, isExpression);
-            Debug.assert(receiver);
-
             return setOriginalNode(
-                context.getEmitHelperFactory().createClassPrivateFieldInHelper(info.brandCheckIdentifier, receiver),
+                emitHelpers().createClassPrivateFieldInHelper(info.brandCheckIdentifier, receiver),
                 node
             );
         }
@@ -580,6 +665,23 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return visitEachChild(node, visitor, context);
     }
 
+    function visitPropertyAssignment(node: PropertyAssignment) {
+        // 13.2.5.5 RS: PropertyDefinitionEvaluation
+        //   PropertyAssignment : PropertyName `:` AssignmentExpression
+        //     ...
+        //     5. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and _isProtoSetter_ is *false*, then
+        //        a. Let _popValue_ be ? NamedEvaluation of |AssignmentExpression| with argument _propKey_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const { referencedName, name } = visitReferencedPropertyName(node.name);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, referencedName), isExpression);
+            return factory.updatePropertyAssignment(node, name, initializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
     function visitVariableStatement(node: VariableStatement) {
         const savedPendingStatements = pendingStatements;
         pendingStatements = [];
@@ -593,19 +695,139 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return statement;
     }
 
-    function visitComputedPropertyName(node: ComputedPropertyName) {
-        let expression = visitNode(node.expression, visitor, isExpression);
-        Debug.assert(expression);
+    function getAssignedNameOfIdentifier(name: Identifier, initializer: Expression) {
+        const originalClass = getOriginalNode(initializer, isClassLike);
+        return originalClass && !originalClass.name && hasSyntacticModifier(originalClass, ModifierFlags.Default) ?
+            factory.createStringLiteral("default") :
+            factory.createStringLiteralFromNode(name);
+    }
+
+    function visitVariableDeclaration(node: VariableDeclaration) {
+        // 14.3.1.2 RS: Evaluation
+        //   LexicalBinding : BindingIdentifier Initializer
+        //     ...
+        //     3. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //        a. Let _value_ be ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+        //
+        // 14.3.2.1 RS: Evaluation
+        //   VariableDeclaration : BindingIdentifier Initializer
+        //     ...
+        //     3. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //        a. Let _value_ be ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.initializer);
+            const name = visitNode(node.name, visitor, isBindingName);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateVariableDeclaration(node, name, /*exclamationToken*/ undefined, /*type*/ undefined, initializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitParameterDeclaration(node: ParameterDeclaration) {
+        // 8.6.3 RS: IteratorBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     5. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+        //
+        // 14.3.3.3 RS: KeyedBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     4. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.initializer);
+            const name = visitNode(node.name, visitor, isBindingName);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateParameterDeclaration(
+                node,
+                /*modifiers*/ undefined,
+                /*dotDotDotToken*/ undefined,
+                name,
+                /*questionToken*/ undefined,
+                /*type*/ undefined,
+                initializer
+            );
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitBindingElement(node: BindingElement) {
+        // 8.6.3 RS: IteratorBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     5. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+        //
+        // 14.3.3.3 RS: KeyedBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     4. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.initializer);
+            const propertyName = visitNode(node.propertyName, visitor, isPropertyName);
+            const name = visitNode(node.name, visitor, isBindingName);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateBindingElement(node, /*dotDotDotToken*/ undefined, propertyName, name, initializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitExportAssignment(node: ExportAssignment) {
+        // 16.2.3.7 RS: Evaluation
+        //   ExportDeclaration : `export` `default` AssignmentExpression `;`
+        //     1. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true*, then
+        //        a. Let _value_ be ? NamedEvaluation of |AssignmentExpression| with argument `"default"`.
+        //     ...
+
+        // NOTE: Since emit for `export =` translates to `module.exports = ...`, the assigned nameof the class
+        // is `""`.
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = factory.createStringLiteral(node.isExportEquals ? "" : "default");
+            const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
+            const expression = visitNode(node.expression, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateExportAssignment(node, modifiers, expression);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function injectPendingExpressions(expression: Expression) {
         if (some(pendingExpressions)) {
             if (isParenthesizedExpression(expression)) {
-                expression = factory.updateParenthesizedExpression(expression, factory.inlineExpressions([...pendingExpressions, expression.expression]));
+                pendingExpressions.push(expression.expression);
+                expression = factory.updateParenthesizedExpression(expression, factory.inlineExpressions(pendingExpressions));
             }
             else {
-                expression = factory.inlineExpressions([...pendingExpressions, expression]);
+                pendingExpressions.push(expression);
+                expression = factory.inlineExpressions(pendingExpressions);
             }
             pendingExpressions = undefined;
         }
-        return factory.updateComputedPropertyName(node, expression);
+        return expression;
+    }
+
+    function visitComputedPropertyName(node: ComputedPropertyName) {
+        const expression = visitNode(node.expression, visitor, isExpression);
+        return factory.updateComputedPropertyName(node, injectPendingExpressions(expression));
     }
 
     function visitConstructorDeclaration(node: ConstructorDeclaration) {
@@ -615,10 +837,16 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return fallbackVisitor(node);
     }
 
+    function shouldTransformClassElementToWeakMap(node: PrivateIdentifierMethodDeclaration | PrivateIdentifierAccessorDeclaration | PrivateIdentifierPropertyDeclaration) {
+        if (shouldTransformPrivateElementsOrClassStaticBlocks) return true;
+        if (hasStaticModifier(node) && getInternalEmitFlags(node) & InternalEmitFlags.TransformPrivateStaticElements) return true;
+        return false;
+    }
+
     function visitMethodOrAccessorDeclaration(node: MethodDeclaration | AccessorDeclaration) {
         Debug.assert(!hasDecorators(node));
 
-        if (!shouldTransformPrivateElementsOrClassStaticBlocks || !isPrivateIdentifier(node.name)) {
+        if (!isPrivateIdentifierClassElementDeclaration(node) || !shouldTransformClassElementToWeakMap(node)) {
             return visitEachChild(node, classElementVisitor, context);
         }
 
@@ -690,8 +918,6 @@ export function transformClassFields(context: TransformationContext): (x: Source
         //      get x() { return this.#x; }
         //      set x(value) { this.#x = value; }
 
-        Debug.assertEachNode(node.modifiers, isModifier);
-
         const commentRange = getCommentRange(node);
         const sourceMapRange = getSourceMapRange(node);
 
@@ -701,27 +927,34 @@ export function transformClassFields(context: TransformationContext): (x: Source
         let getterName = name;
         let setterName = name;
         if (isComputedPropertyName(name) && !isSimpleInlineableExpression(name.expression)) {
-            const temp = factory.createTempVariable(hoistVariableDeclaration);
-            setSourceMapRange(temp, name.expression);
-            const expression = visitNode(name.expression, visitor, isExpression);
-            Debug.assert(expression);
-            const assignment = factory.createAssignment(temp, expression);
-            setSourceMapRange(assignment, name.expression);
-            getterName = factory.updateComputedPropertyName(name, factory.inlineExpressions([assignment, temp]));
-            setterName = factory.updateComputedPropertyName(name, temp);
+            const cacheAssignment = findComputedPropertyNameCacheAssignment(name);
+            if (cacheAssignment) {
+                getterName = factory.updateComputedPropertyName(name, visitNode(name.expression, visitor, isExpression));
+                setterName = factory.updateComputedPropertyName(name, cacheAssignment.left);
+            }
+            else {
+                const temp = factory.createTempVariable(hoistVariableDeclaration);
+                setSourceMapRange(temp, name.expression);
+                const expression = visitNode(name.expression, visitor, isExpression);
+                const assignment = factory.createAssignment(temp, expression);
+                setSourceMapRange(assignment, name.expression);
+                getterName = factory.updateComputedPropertyName(name, assignment);
+                setterName = factory.updateComputedPropertyName(name, temp);
+            }
         }
 
-        const backingField = createAccessorPropertyBackingField(factory, node, node.modifiers, node.initializer);
+        const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
+        const backingField = createAccessorPropertyBackingField(factory, node, modifiers, node.initializer);
         setOriginalNode(backingField, node);
         setEmitFlags(backingField, EmitFlags.NoComments);
         setSourceMapRange(backingField, sourceMapRange);
 
-        const getter = createAccessorPropertyGetRedirector(factory, node, node.modifiers, getterName);
+        const getter = createAccessorPropertyGetRedirector(factory, node, modifiers, getterName);
         setOriginalNode(getter, node);
         setCommentRange(getter, commentRange);
         setSourceMapRange(getter, sourceMapRange);
 
-        const setter = createAccessorPropertySetRedirector(factory, node, node.modifiers, setterName);
+        const setter = createAccessorPropertySetRedirector(factory, node, modifiers, setterName);
         setOriginalNode(setter, node);
         setEmitFlags(setter, EmitFlags.NoComments);
         setSourceMapRange(setter, sourceMapRange);
@@ -730,16 +963,30 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function transformPrivateFieldInitializer(node: PrivateIdentifierPropertyDeclaration) {
-        if (shouldTransformPrivateElementsOrClassStaticBlocks) {
+        if (shouldTransformClassElementToWeakMap(node)) {
             // If we are transforming private elements into WeakMap/WeakSet, we should elide the node.
             const info = accessPrivateIdentifier(node.name);
             Debug.assert(info, "Undeclared private name for property declaration.");
 
-            // Leave invalid code untransformed; otherwise, elide the node as it is transformed elsewhere.
-            return info.isValid ? undefined : node;
+            // Leave invalid code untransformed
+            if (!info.isValid) {
+                return node;
+            }
+
+            // If we encounter a valid private static field and we're not transforming
+            // class static blocks, initialize it
+            if (info.isStatic && !shouldTransformPrivateElementsOrClassStaticBlocks) {
+                // TODO: fix
+                const statement = transformPropertyOrClassStaticBlock(node, factory.createThis());
+                if (statement) {
+                    return factory.createClassStaticBlockDeclaration(factory.createBlock([statement], /*multiLine*/ true));
+                }
+            }
+
+            return undefined;
         }
 
-        if (shouldTransformInitializersUsingSet && !isStatic(node) && currentClassLexicalEnvironment && currentClassLexicalEnvironment.facts & ClassFacts.WillHoistInitializersToConstructor) {
+        if (shouldTransformInitializersUsingSet && !isStatic(node) && lexicalEnvironment?.data && lexicalEnvironment.data.facts & ClassFacts.WillHoistInitializersToConstructor) {
             // If we are transforming initializers using Set semantics we will elide the initializer as it will
             // be moved to the constructor to preserve evaluation order next to public instance fields. We don't
             // need to do this transformation for private static fields since public static fields can be
@@ -754,6 +1001,18 @@ export function transformClassFields(context: TransformationContext): (x: Source
             );
         }
 
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const { referencedName, name } = visitReferencedPropertyName(node.name);
+            return factory.updatePropertyDeclaration(
+                node,
+                visitNodes(node.modifiers, modifierVisitor, isModifier),
+                name,
+                /*questionOrExclamationToken*/ undefined,
+                /*type*/ undefined,
+                visitNode(node.initializer, child => namedEvaluationVisitor(child, referencedName), isExpression)
+            );
+        }
+
         return visitEachChild(node, visitor, context);
     }
 
@@ -763,9 +1022,12 @@ export function transformClassFields(context: TransformationContext): (x: Source
             // If it's not inlineable, then we emit an expression after the class which assigns
             // the property name to the temporary variable.
 
-            const expr = getPropertyNameExpressionIfNeeded(node.name, /*shouldHoist*/ !!node.initializer || useDefineForClassFields);
+            const expr = getPropertyNameExpressionIfNeeded(
+                node.name,
+                /*shouldHoist*/ !!node.initializer || useDefineForClassFields,
+                /*captureReferencedName*/ isNamedEvaluation(node, isAnonymousClassNeedingAssignedName));
             if (expr) {
-                getPendingExpressions().push(expr);
+                getPendingExpressions().push(...flattenCommaList(expr));
             }
 
             if (isStatic(node) && !shouldTransformPrivateElementsOrClassStaticBlocks) {
@@ -790,7 +1052,14 @@ export function transformClassFields(context: TransformationContext): (x: Source
             return undefined;
         }
 
-        return visitEachChild(node, classElementVisitor, context);
+        return factory.updatePropertyDeclaration(
+            node,
+            visitNodes(node.modifiers, modifierVisitor, isModifier),
+            visitNode(node.name, propertyNameVisitor, isPropertyName),
+            /*questionOrExclamationToken*/ undefined,
+            /*type*/ undefined,
+            visitNode(node.initializer, visitor, isExpression)
+        );
     }
 
     function transformFieldInitializer(node: PropertyDeclaration) {
@@ -803,13 +1072,14 @@ export function transformClassFields(context: TransformationContext): (x: Source
     function shouldTransformAutoAccessorsInCurrentClass() {
         return shouldTransformAutoAccessors === Ternary.True ||
             shouldTransformAutoAccessors === Ternary.Maybe &&
-            !!currentClassLexicalEnvironment && !!(currentClassLexicalEnvironment.facts & ClassFacts.WillHoistInitializersToConstructor);
+            !!lexicalEnvironment?.data && !!(lexicalEnvironment.data.facts & ClassFacts.WillHoistInitializersToConstructor);
     }
 
     function visitPropertyDeclaration(node: PropertyDeclaration) {
         // If this is an auto-accessor, we defer to `transformAutoAccessor`. That function
         // will in turn call `transformFieldInitializer` as needed.
-        if (shouldTransformAutoAccessorsInCurrentClass() && isAutoAccessorPropertyDeclaration(node)) {
+        if (isAutoAccessorPropertyDeclaration(node) && (shouldTransformAutoAccessorsInCurrentClass() ||
+            hasStaticModifier(node) && getInternalEmitFlags(node) & InternalEmitFlags.TransformPrivateStaticElements)) {
             return transformAutoAccessor(node);
         }
 
@@ -817,41 +1087,44 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function createPrivateIdentifierAccess(info: PrivateIdentifierInfo, receiver: Expression): Expression {
-        return createPrivateIdentifierAccessHelper(info, Debug.checkDefined(visitNode(receiver, visitor, isExpression)));
+        return createPrivateIdentifierAccessHelper(info, visitNode(receiver, visitor, isExpression));
     }
 
     function createPrivateIdentifierAccessHelper(info: PrivateIdentifierInfo, receiver: Expression): Expression {
         setCommentRange(receiver, moveRangePos(receiver, -1));
 
-        switch(info.kind) {
+        switch (info.kind) {
             case PrivateIdentifierKind.Accessor:
-                return context.getEmitHelperFactory().createClassPrivateFieldGetHelper(
+                return emitHelpers().createClassPrivateFieldGetHelper(
                     receiver,
                     info.brandCheckIdentifier,
                     info.kind,
                     info.getterName
                 );
             case PrivateIdentifierKind.Method:
-                return context.getEmitHelperFactory().createClassPrivateFieldGetHelper(
+                return emitHelpers().createClassPrivateFieldGetHelper(
                     receiver,
                     info.brandCheckIdentifier,
                     info.kind,
                     info.methodName
                 );
             case PrivateIdentifierKind.Field:
-                return context.getEmitHelperFactory().createClassPrivateFieldGetHelper(
+                return emitHelpers().createClassPrivateFieldGetHelper(
                     receiver,
                     info.brandCheckIdentifier,
                     info.kind,
-                    info.variableName
+                    info.isStatic ? info.variableName : undefined
                 );
+            case "untransformed":
+                return Debug.fail("Access helpers should not be created for untransformed private elements");
+
             default:
                 Debug.assertNever(info, "Unknown private element type");
         }
     }
 
     function visitPropertyAccessExpression(node: PropertyAccessExpression) {
-        if (shouldTransformPrivateElementsOrClassStaticBlocks && isPrivateIdentifier(node.name)) {
+        if (isPrivateIdentifier(node.name)) {
             const privateIdentifierInfo = accessPrivateIdentifier(node.name);
             if (privateIdentifierInfo) {
                 return setTextRange(
@@ -867,8 +1140,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
             isSuperProperty(node) &&
             isIdentifier(node.name) &&
             currentStaticPropertyDeclarationOrStaticBlock &&
-            currentClassLexicalEnvironment) {
-            const { classConstructor, superClassReference, facts } = currentClassLexicalEnvironment;
+            lexicalEnvironment?.data) {
+            const { classConstructor, superClassReference, facts } = lexicalEnvironment.data;
             if (facts & ClassFacts.ClassWasDecorated) {
                 return visitInvalidSuperProperty(node);
             }
@@ -891,8 +1164,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
         if (shouldTransformSuperInStaticInitializers &&
             isSuperProperty(node) &&
             currentStaticPropertyDeclarationOrStaticBlock &&
-            currentClassLexicalEnvironment) {
-            const { classConstructor, superClassReference, facts } = currentClassLexicalEnvironment;
+            lexicalEnvironment?.data) {
+            const { classConstructor, superClassReference, facts } = lexicalEnvironment.data;
             if (facts & ClassFacts.ClassWasDecorated) {
                 return visitInvalidSuperProperty(node);
             }
@@ -901,7 +1174,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
                 // converts `super[x]` into `Reflect.get(_baseTemp, x, _classTemp)`
                 const superProperty = factory.createReflectGetCall(
                     superClassReference,
-                    Debug.checkDefined(visitNode(node.argumentExpression, visitor, isExpression)),
+                    visitNode(node.argumentExpression, visitor, isExpression),
                     classConstructor
                 );
                 setOriginalNode(superProperty, node.expression);
@@ -912,20 +1185,19 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return visitEachChild(node, visitor, context);
     }
 
-    function visitPreOrPostfixUnaryExpression(node: PrefixUnaryExpression | PostfixUnaryExpression, valueIsDiscarded: boolean) {
+    function visitPreOrPostfixUnaryExpression(node: PrefixUnaryExpression | PostfixUnaryExpression, discarded: boolean) {
         if (node.operator === SyntaxKind.PlusPlusToken ||
             node.operator === SyntaxKind.MinusMinusToken) {
             const operand = skipParentheses(node.operand);
-            if (shouldTransformPrivateElementsOrClassStaticBlocks &&
-                isPrivateIdentifierPropertyAccessExpression(operand)) {
+
+            if (isPrivateIdentifierPropertyAccessExpression(operand)) {
                 let info: PrivateIdentifierInfo | undefined;
                 if (info = accessPrivateIdentifier(operand.name)) {
                     const receiver = visitNode(operand.expression, visitor, isExpression);
-                    Debug.assert(receiver);
                     const { readExpression, initializeExpression } = createCopiableReceiverExpr(receiver);
 
                     let expression: Expression = createPrivateIdentifierAccess(info, readExpression);
-                    const temp = isPrefixUnaryExpression(node) || valueIsDiscarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
+                    const temp = isPrefixUnaryExpression(node) || discarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
                     expression = expandPreOrPostfixIncrementOrDecrementExpression(factory, node, expression, hoistVariableDeclaration, temp);
                     expression = createPrivateIdentifierAssignment(
                         info,
@@ -945,7 +1217,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
             else if (shouldTransformSuperInStaticInitializers &&
                 isSuperProperty(operand) &&
                 currentStaticPropertyDeclarationOrStaticBlock &&
-                currentClassLexicalEnvironment) {
+                lexicalEnvironment?.data) {
                 // converts `++super.a` into `(Reflect.set(_baseTemp, "a", (_a = Reflect.get(_baseTemp, "a", _classTemp), _b = ++_a), _classTemp), _b)`
                 // converts `++super[f()]` into `(Reflect.set(_baseTemp, _a = f(), (_b = Reflect.get(_baseTemp, _a, _classTemp), _c = ++_b), _classTemp), _c)`
                 // converts `--super.a` into `(Reflect.set(_baseTemp, "a", (_a = Reflect.get(_baseTemp, "a", _classTemp), _b = --_a), _classTemp), _b)`
@@ -954,7 +1226,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
                 // converts `super[f()]++` into `(Reflect.set(_baseTemp, _a = f(), (_b = Reflect.get(_baseTemp, _a, _classTemp), _c = _b++), _classTemp), _c)`
                 // converts `super.a--` into `(Reflect.set(_baseTemp, "a", (_a = Reflect.get(_baseTemp, "a", _classTemp), _b = _a--), _classTemp), _b)`
                 // converts `super[f()]--` into `(Reflect.set(_baseTemp, _a = f(), (_b = Reflect.get(_baseTemp, _a, _classTemp), _c = _b--), _classTemp), _c)`
-                const { classConstructor, superClassReference, facts } = currentClassLexicalEnvironment;
+                const { classConstructor, superClassReference, facts } = lexicalEnvironment.data;
                 if (facts & ClassFacts.ClassWasDecorated) {
                     const expression = visitInvalidSuperProperty(operand);
                     return isPrefixUnaryExpression(node) ?
@@ -975,14 +1247,14 @@ export function transformClassFields(context: TransformationContext): (x: Source
                         }
                         else {
                             getterName = factory.createTempVariable(hoistVariableDeclaration);
-                            setterName = factory.createAssignment(getterName, Debug.checkDefined(visitNode(operand.argumentExpression, visitor, isExpression)));
+                            setterName = factory.createAssignment(getterName, visitNode(operand.argumentExpression, visitor, isExpression));
                         }
                     }
                     if (setterName && getterName) {
                         let expression: Expression = factory.createReflectGetCall(superClassReference, getterName, classConstructor);
                         setTextRange(expression, operand);
 
-                        const temp = valueIsDiscarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
+                        const temp = discarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
                         expression = expandPreOrPostfixIncrementOrDecrementExpression(factory, node, expression, hoistVariableDeclaration, temp);
                         expression = factory.createReflectSetCall(superClassReference, setterName, expression, classConstructor);
                         setOriginalNode(expression, node);
@@ -1012,7 +1284,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     function visitExpressionStatement(node: ExpressionStatement) {
         return factory.updateExpressionStatement(
             node,
-            Debug.checkDefined(visitNode(node.expression, discardedValueVisitor, isExpression))
+            visitNode(node.expression, discardedValueVisitor, isExpression)
         );
     }
 
@@ -1027,8 +1299,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function visitCallExpression(node: CallExpression) {
-        if (shouldTransformPrivateElementsOrClassStaticBlocks &&
-            isPrivateIdentifierPropertyAccessExpression(node.expression)) {
+        if (isPrivateIdentifierPropertyAccessExpression(node.expression) &&
+            accessPrivateIdentifier(node.expression.name)) {
             // obj.#x()
 
             // Transform call expressions of private names to properly bind the `this` parameter.
@@ -1036,31 +1308,31 @@ export function transformClassFields(context: TransformationContext): (x: Source
             if (isCallChain(node)) {
                 return factory.updateCallChain(
                     node,
-                    factory.createPropertyAccessChain(Debug.checkDefined(visitNode(target, visitor, isExpression)), node.questionDotToken, "call"),
+                    factory.createPropertyAccessChain(visitNode(target, visitor, isExpression), node.questionDotToken, "call"),
                     /*questionDotToken*/ undefined,
                     /*typeArguments*/ undefined,
-                    [Debug.checkDefined(visitNode(thisArg, visitor, isExpression)), ...visitNodes(node.arguments, visitor, isExpression)]
+                    [visitNode(thisArg, visitor, isExpression), ...visitNodes(node.arguments, visitor, isExpression)]
                 );
             }
             return factory.updateCallExpression(
                 node,
-                factory.createPropertyAccessExpression(Debug.checkDefined(visitNode(target, visitor, isExpression)), "call"),
+                factory.createPropertyAccessExpression(visitNode(target, visitor, isExpression), "call"),
                 /*typeArguments*/ undefined,
-                [Debug.checkDefined(visitNode(thisArg, visitor, isExpression)), ...visitNodes(node.arguments, visitor, isExpression)]
+                [visitNode(thisArg, visitor, isExpression), ...visitNodes(node.arguments, visitor, isExpression)]
             );
         }
 
         if (shouldTransformSuperInStaticInitializers &&
             isSuperProperty(node.expression) &&
             currentStaticPropertyDeclarationOrStaticBlock &&
-            currentClassLexicalEnvironment?.classConstructor) {
+            lexicalEnvironment?.data?.classConstructor) {
             // super.x()
             // super[x]()
 
             // converts `super.f(...)` into `Reflect.get(_baseTemp, "f", _classTemp).call(_classTemp, ...)`
             const invocation = factory.createFunctionCallCall(
-                Debug.checkDefined(visitNode(node.expression, visitor, isExpression)),
-                currentClassLexicalEnvironment.classConstructor,
+                visitNode(node.expression, visitor, isExpression),
+                lexicalEnvironment.data.classConstructor,
                 visitNodes(node.arguments, visitor, isExpression)
             );
             setOriginalNode(invocation, node);
@@ -1072,30 +1344,30 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function visitTaggedTemplateExpression(node: TaggedTemplateExpression) {
-        if (shouldTransformPrivateElementsOrClassStaticBlocks &&
-            isPrivateIdentifierPropertyAccessExpression(node.tag)) {
+        if (isPrivateIdentifierPropertyAccessExpression(node.tag) &&
+            accessPrivateIdentifier(node.tag.name)) {
             // Bind the `this` correctly for tagged template literals when the tag is a private identifier property access.
             const { thisArg, target } = factory.createCallBinding(node.tag, hoistVariableDeclaration, languageVersion);
             return factory.updateTaggedTemplateExpression(
                 node,
                 factory.createCallExpression(
-                    factory.createPropertyAccessExpression(Debug.checkDefined(visitNode(target, visitor, isExpression)), "bind"),
+                    factory.createPropertyAccessExpression(visitNode(target, visitor, isExpression), "bind"),
                     /*typeArguments*/ undefined,
-                    [Debug.checkDefined(visitNode(thisArg, visitor, isExpression))]
+                    [visitNode(thisArg, visitor, isExpression)]
                 ),
                 /*typeArguments*/ undefined,
-                Debug.checkDefined(visitNode(node.template, visitor, isTemplateLiteral))
+                visitNode(node.template, visitor, isTemplateLiteral)
             );
         }
         if (shouldTransformSuperInStaticInitializers &&
             isSuperProperty(node.tag) &&
             currentStaticPropertyDeclarationOrStaticBlock &&
-            currentClassLexicalEnvironment?.classConstructor) {
+            lexicalEnvironment?.data?.classConstructor) {
 
             // converts `` super.f`x` `` into `` Reflect.get(_baseTemp, "f", _classTemp).bind(_classTemp)`x` ``
             const invocation = factory.createFunctionBindCall(
-                Debug.checkDefined(visitNode(node.tag, visitor, isExpression)),
-                currentClassLexicalEnvironment.classConstructor,
+                visitNode(node.tag, visitor, isExpression),
+                lexicalEnvironment.data.classConstructor,
                 []
             );
             setOriginalNode(invocation, node);
@@ -1104,18 +1376,18 @@ export function transformClassFields(context: TransformationContext): (x: Source
                 node,
                 invocation,
                 /*typeArguments*/ undefined,
-                Debug.checkDefined(visitNode(node.template, visitor, isTemplateLiteral))
+                visitNode(node.template, visitor, isTemplateLiteral)
             );
         }
         return visitEachChild(node, visitor, context);
     }
 
     function transformClassStaticBlockDeclaration(node: ClassStaticBlockDeclaration) {
-        if (shouldTransformPrivateElementsOrClassStaticBlocks) {
-            if (currentClassLexicalEnvironment) {
-                classLexicalEnvironmentMap.set(getOriginalNodeId(node), currentClassLexicalEnvironment);
-            }
+        if (lexicalEnvironment) {
+            lexicalEnvironmentMap.set(getOriginalNode(node), lexicalEnvironment);
+        }
 
+        if (shouldTransformPrivateElementsOrClassStaticBlocks) {
             startLexicalEnvironment();
             let statements = setCurrentStaticPropertyDeclarationOrStaticBlockAnd(
                 node,
@@ -1132,7 +1404,32 @@ export function transformClassFields(context: TransformationContext): (x: Source
         }
     }
 
-    function visitBinaryExpression(node: BinaryExpression, valueIsDiscarded: boolean) {
+    function isAnonymousClassNeedingAssignedName(node: AnonymousFunctionDefinition) {
+        if (isClassExpression(node) && !node.name) {
+            const staticPropertiesOrClassStaticBlocks = getStaticPropertiesAndClassStaticBlock(node);
+            const classStaticBlock = find(staticPropertiesOrClassStaticBlocks, isClassStaticBlockDeclaration);
+            if (classStaticBlock) {
+                for (const statement of classStaticBlock.body.statements) {
+                    if (isExpressionStatement(statement) &&
+                        isCallToHelper(statement.expression, "___setFunctionName" as __String)) {
+                        return false;
+                    }
+                }
+            }
+
+            const hasTransformableStatics =
+                (shouldTransformPrivateElementsOrClassStaticBlocks ||
+                    !!(getInternalEmitFlags(node) && InternalEmitFlags.TransformPrivateStaticElements)) &&
+                some(staticPropertiesOrClassStaticBlocks, node =>
+                    isClassStaticBlockDeclaration(node) ||
+                    isPrivateIdentifierClassElementDeclaration(node) ||
+                    shouldTransformInitializers && isInitializedProperty(node));
+            return hasTransformableStatics;
+        }
+        return false;
+    }
+
+    function visitBinaryExpression(node: BinaryExpression, discarded: boolean) {
         if (isDestructuringAssignment(node)) {
             // ({ x: obj.#x } = ...)
             // ({ x: super.x } = ...)
@@ -1141,9 +1438,9 @@ export function transformClassFields(context: TransformationContext): (x: Source
             pendingExpressions = undefined;
             node = factory.updateBinaryExpression(
                 node,
-                Debug.checkDefined(visitNode(node.left, assignmentTargetVisitor, isExpression)),
+                visitNode(node.left, assignmentTargetVisitor, isExpression),
                 node.operatorToken,
-                Debug.checkDefined(visitNode(node.right, visitor, isExpression))
+                visitNode(node.right, visitor, isExpression)
             );
             const expr = some(pendingExpressions) ?
                 factory.inlineExpressions(compact([...pendingExpressions, node])) :
@@ -1152,8 +1449,40 @@ export function transformClassFields(context: TransformationContext): (x: Source
             return expr;
         }
         if (isAssignmentExpression(node)) {
-            if (shouldTransformPrivateElementsOrClassStaticBlocks &&
-                isPrivateIdentifierPropertyAccessExpression(node.left)) {
+            // 13.15.2 RS: Evaluation
+            //   AssignmentExpression : LeftHandSideExpression `=` AssignmentExpression
+            //     1. If |LeftHandSideExpression| is neither an |ObjectLiteral| nor an |ArrayLiteral|, then
+            //        a. Let _lref_ be ? Evaluation of |LeftHandSideExpression|.
+            //        b. If IsAnonymousFunctionDefinition(|AssignmentExpression|) and IsIdentifierRef of |LeftHandSideExpression| are both *true*, then
+            //           i. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+            //
+            //   AssignmentExpression : LeftHandSideExpression `&&=` AssignmentExpression
+            //     ...
+            //     5. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and IsIdentifierRef of |LeftHandSideExpression| is *true*, then
+            //        a. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+            //
+            //   AssignmentExpression : LeftHandSideExpression `||=` AssignmentExpression
+            //     ...
+            //     5. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and IsIdentifierRef of |LeftHandSideExpression| is *true*, then
+            //        a. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+            //
+            //   AssignmentExpression : LeftHandSideExpression `??=` AssignmentExpression
+            //     ...
+            //     4. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and IsIdentifierRef of |LeftHandSideExpression| is *true*, then
+            //        a. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+
+            if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+                const assignedName = getAssignedNameOfIdentifier(node.left, node.right);
+                const left = visitNode(node.left, visitor, isExpression);
+                const right = visitNode(node.right, node => namedEvaluationVisitor(node, assignedName), isExpression);
+                return factory.updateBinaryExpression(node, left, node.operatorToken, right);
+            }
+
+            if (isPrivateIdentifierPropertyAccessExpression(node.left)) {
                 // obj.#x = ...
                 const info = accessPrivateIdentifier(node.left.name);
                 if (info) {
@@ -1169,18 +1498,18 @@ export function transformClassFields(context: TransformationContext): (x: Source
             else if (shouldTransformSuperInStaticInitializers &&
                 isSuperProperty(node.left) &&
                 currentStaticPropertyDeclarationOrStaticBlock &&
-                currentClassLexicalEnvironment) {
+                lexicalEnvironment?.data) {
                 // super.x = ...
                 // super[x] = ...
                 // super.x += ...
                 // super.x -= ...
-                const { classConstructor, superClassReference, facts } = currentClassLexicalEnvironment;
+                const { classConstructor, superClassReference, facts } = lexicalEnvironment.data;
                 if (facts & ClassFacts.ClassWasDecorated) {
                     return factory.updateBinaryExpression(
                         node,
                         visitInvalidSuperProperty(node.left),
                         node.operatorToken,
-                        Debug.checkDefined(visitNode(node.right, visitor, isExpression)));
+                        visitNode(node.right, visitor, isExpression));
                 }
                 if (classConstructor && superClassReference) {
                     let setterName =
@@ -1207,8 +1536,6 @@ export function transformClassFields(context: TransformationContext): (x: Source
                             );
                             setOriginalNode(superPropertyGet, node.left);
                             setTextRange(superPropertyGet, node.left);
-
-                            Debug.assert(expression);
                             expression = factory.createBinaryExpression(
                                 superPropertyGet,
                                 getNonAssignmentOperatorForCompoundAssignment(node.operatorToken.kind),
@@ -1217,14 +1544,12 @@ export function transformClassFields(context: TransformationContext): (x: Source
                             setTextRange(expression, node);
                         }
 
-                        const temp = valueIsDiscarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
+                        const temp = discarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
                         if (temp) {
-                            Debug.assert(expression);
                             expression = factory.createAssignment(temp, expression);
                             setTextRange(temp, node);
                         }
 
-                        Debug.assert(expression);
                         expression = factory.createReflectSetCall(
                             superClassReference,
                             setterName,
@@ -1244,17 +1569,68 @@ export function transformClassFields(context: TransformationContext): (x: Source
                 }
             }
         }
-        if (shouldTransformPrivateElementsOrClassStaticBlocks &&
-            isPrivateIdentifierInExpression(node)) {
+        if (isPrivateIdentifierInExpression(node)) {
             // #x in obj
             return transformPrivateIdentifierInInExpression(node);
         }
         return visitEachChild(node, visitor, context);
     }
 
+    function visitCommaListExpression(node: CommaListExpression, discarded: boolean) {
+        const elements = discarded ?
+            visitCommaListElements(node.elements, discardedValueVisitor) :
+            visitCommaListElements(node.elements, visitor, discardedValueVisitor);
+        return factory.updateCommaListExpression(node, elements);
+    }
+
+    function visitParenthesizedExpression(node: ParenthesizedExpression, discarded: boolean, referencedName: Expression | undefined) {
+        // 8.4.5 RS: NamedEvaluation
+        //   ParenthesizedExpression : `(` Expression `)`
+        //     ...
+        //     2. Return ? NamedEvaluation of |Expression| with argument _name_.
+
+        const visitorFunc: Visitor<Node, Node> =
+            discarded ? discardedValueVisitor :
+            referencedName ? node => namedEvaluationVisitor(node, referencedName) :
+            visitor;
+        const expression = visitNode(node.expression, visitorFunc, isExpression);
+        return factory.updateParenthesizedExpression(node, expression);
+    }
+
+    function visitPartiallyEmittedExpression(node: PartiallyEmittedExpression, discarded: boolean, referencedName: Expression | undefined) {
+        // Emulates 8.4.5 RS: NamedEvaluation
+
+        const visitorFunc: Visitor<Node, Node> =
+            discarded ? discardedValueVisitor :
+            referencedName ? node => namedEvaluationVisitor(node, referencedName) :
+            visitor;
+        const expression = visitNode(node.expression, visitorFunc, isExpression);
+        return factory.updatePartiallyEmittedExpression(node, expression);
+    }
+
+    function visitReferencedPropertyName(node: PropertyName) {
+        if (isPropertyNameLiteral(node) || isPrivateIdentifier(node)) {
+            const referencedName = factory.createStringLiteralFromNode(node);
+            const name = visitNode(node, visitor, isPropertyName);
+            return { referencedName, name };
+        }
+
+        if (isPropertyNameLiteral(node.expression) && !isIdentifier(node.expression)) {
+            const referencedName = factory.createStringLiteralFromNode(node.expression);
+            const name = visitNode(node, visitor, isPropertyName);
+            return { referencedName, name };
+        }
+
+        const referencedName = factory.createTempVariable(hoistVariableDeclaration);
+        const key = emitHelpers().createPropKeyHelper(visitNode(node.expression, visitor, isExpression));
+        const assignment = factory.createAssignment(referencedName, key);
+        const name = factory.updateComputedPropertyName(node, injectPendingExpressions(assignment));
+        return { referencedName, name };
+    }
+
     function createPrivateIdentifierAssignment(info: PrivateIdentifierInfo, receiver: Expression, right: Expression, operator: AssignmentOperator): Expression {
-        receiver = Debug.checkDefined(visitNode(receiver, visitor, isExpression));
-        right = Debug.checkDefined(visitNode(right, visitor, isExpression));
+        receiver = visitNode(receiver, visitor, isExpression);
+        right = visitNode(right, visitor, isExpression);
 
         if (isCompoundAssignment(operator)) {
             const { readExpression, initializeExpression } = createCopiableReceiverExpr(receiver);
@@ -1270,7 +1646,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
 
         switch(info.kind) {
             case PrivateIdentifierKind.Accessor:
-                return context.getEmitHelperFactory().createClassPrivateFieldSetHelper(
+                return emitHelpers().createClassPrivateFieldSetHelper(
                     receiver,
                     info.brandCheckIdentifier,
                     right,
@@ -1278,7 +1654,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
                     info.setterName
                 );
             case PrivateIdentifierKind.Method:
-                return context.getEmitHelperFactory().createClassPrivateFieldSetHelper(
+                return emitHelpers().createClassPrivateFieldSetHelper(
                     receiver,
                     info.brandCheckIdentifier,
                     right,
@@ -1286,13 +1662,16 @@ export function transformClassFields(context: TransformationContext): (x: Source
                     /* f */ undefined
                 );
             case PrivateIdentifierKind.Field:
-                return context.getEmitHelperFactory().createClassPrivateFieldSetHelper(
+                return emitHelpers().createClassPrivateFieldSetHelper(
                     receiver,
                     info.brandCheckIdentifier,
                     right,
                     info.kind,
-                    info.variableName
+                    info.isStatic ? info.variableName : undefined
                 );
+            case "untransformed":
+                return Debug.fail("Access helpers should not be created for untransformed private elements");
+
             default:
                 Debug.assertNever(info, "Unknown private element type");
         }
@@ -1305,7 +1684,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     function getClassFacts(node: ClassLikeDeclaration) {
         let facts = ClassFacts.None;
         const original = getOriginalNode(node);
-        if (isClassDeclaration(original) && classOrConstructorParameterIsDecorated(original)) {
+        if (isClassDeclaration(original) && classOrConstructorParameterIsDecorated(legacyDecorators, original)) {
             facts |= ClassFacts.ClassWasDecorated;
         }
         let containsPublicInstanceFields = false;
@@ -1314,7 +1693,9 @@ export function transformClassFields(context: TransformationContext): (x: Source
         let containsInstanceAutoAccessors = false;
         for (const member of node.members) {
             if (isStatic(member)) {
-                if (member.name && (isPrivateIdentifier(member.name) || isAutoAccessorPropertyDeclaration(member)) && shouldTransformPrivateElementsOrClassStaticBlocks) {
+                if (member.name &&
+                    (isPrivateIdentifier(member.name) || isAutoAccessorPropertyDeclaration(member)) &&
+                    shouldTransformPrivateElementsOrClassStaticBlocks) {
                     facts |= ClassFacts.NeedsClassConstructorReference;
                 }
                 if (isPropertyDeclaration(member) || isClassStaticBlockDeclaration(member)) {
@@ -1360,7 +1741,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function visitExpressionWithTypeArgumentsInHeritageClause(node: ExpressionWithTypeArguments) {
-        const facts = currentClassLexicalEnvironment?.facts || ClassFacts.None;
+        const facts = lexicalEnvironment?.data?.facts || ClassFacts.None;
         if (facts & ClassFacts.NeedsClassSuperReference) {
             const temp = factory.createTempVariable(hoistVariableDeclaration, /*reserveInNestedScopes*/ true);
             getClassLexicalEnvironment().superClassReference = temp;
@@ -1368,7 +1749,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
                 node,
                 factory.createAssignment(
                     temp,
-                    Debug.checkDefined(visitNode(node.expression, visitor, isExpression))
+                    visitNode(node.expression, visitor, isExpression)
                 ),
                 /*typeArguments*/ undefined
             );
@@ -1376,22 +1757,26 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return visitEachChild(node, visitor, context);
     }
 
-    function visitInNewClassLexicalEnvironment<T extends ClassLikeDeclaration, U>(node: T, visitor: (node: T, facts: ClassFacts) => U) {
+    function visitInNewClassLexicalEnvironment<T extends ClassLikeDeclaration, U>(node: T, referencedName: Expression | undefined, visitor: (node: T, facts: ClassFacts, referencedName: Expression | undefined) => U) {
         const savedCurrentClassContainer = currentClassContainer;
         const savedPendingExpressions = pendingExpressions;
+        const savedLexicalEnvironment = lexicalEnvironment;
         currentClassContainer = node;
         pendingExpressions = undefined;
         startClassLexicalEnvironment();
 
-        if (shouldTransformPrivateElementsOrClassStaticBlocks) {
+        const shouldAlwaysTransformPrivateStaticElements = getInternalEmitFlags(node) & InternalEmitFlags.TransformPrivateStaticElements;
+        if (shouldTransformPrivateElementsOrClassStaticBlocks || shouldAlwaysTransformPrivateStaticElements) {
             const name = getNameOfDeclaration(node);
             if (name && isIdentifier(name)) {
-                getPrivateIdentifierEnvironment().className = name;
+                getPrivateIdentifierEnvironment().data.className = name;
             }
+        }
 
+        if (shouldTransformPrivateElementsOrClassStaticBlocks) {
             const privateInstanceMethodsAndAccessors = getPrivateInstanceMethodsAndAccessors(node);
             if (some(privateInstanceMethodsAndAccessors)) {
-                getPrivateIdentifierEnvironment().weakSetName = createHoistedVariableForClass(
+                getPrivateIdentifierEnvironment().data.weakSetName = createHoistedVariableForClass(
                     "instances",
                     privateInstanceMethodsAndAccessors[0].name
                 );
@@ -1407,8 +1792,9 @@ export function transformClassFields(context: TransformationContext): (x: Source
             enableSubstitutionForClassStaticThisOrSuperReference();
         }
 
-        const result = visitor(node, facts);
+        const result = visitor(node, facts, referencedName);
         endClassLexicalEnvironment();
+        Debug.assert(lexicalEnvironment === savedLexicalEnvironment);
         currentClassContainer = savedCurrentClassContainer;
         pendingExpressions = savedPendingExpressions;
         return result;
@@ -1416,7 +1802,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function visitClassDeclaration(node: ClassDeclaration) {
-        return visitInNewClassLexicalEnvironment(node, visitClassDeclarationInNewClassLexicalEnvironment);
+        return visitInNewClassLexicalEnvironment(node, /*referencedName*/ undefined, visitClassDeclarationInNewClassLexicalEnvironment);
     }
 
     function visitClassDeclarationInNewClassLexicalEnvironment(node: ClassDeclaration, facts: ClassFacts) {
@@ -1424,12 +1810,31 @@ export function transformClassFields(context: TransformationContext): (x: Source
         // then we need to allocate a temp variable to hold on to that reference.
         let pendingClassReferenceAssignment: BinaryExpression | undefined;
         if (facts & ClassFacts.NeedsClassConstructorReference) {
-            const temp = factory.createTempVariable(hoistVariableDeclaration, /*reservedInNestedScopes*/ true);
-            getClassLexicalEnvironment().classConstructor = factory.cloneNode(temp);
-            pendingClassReferenceAssignment = factory.createAssignment(temp, factory.getInternalName(node));
+            // If we aren't transforming class static blocks, then we can't reuse `_classThis` since in
+            // `class C { ... static { _classThis = ... } }; _classThis = C` the outer assignment would occur *after*
+            // class static blocks evaluate and would overwrite the replacement constructor produced by class
+            // decorators.
+
+            // If we are transforming class static blocks, then we can reuse `_classThis` since the assignment
+            // will be evaluated *before* the transformed static blocks are evaluated and thus won't overwrite
+            // the replacement constructor.
+
+            if (shouldTransformPrivateElementsOrClassStaticBlocks && node.emitNode?.classThis) {
+                getClassLexicalEnvironment().classConstructor = node.emitNode.classThis;
+                pendingClassReferenceAssignment = factory.createAssignment(node.emitNode.classThis, factory.getInternalName(node));
+            }
+            else {
+                const temp = factory.createTempVariable(hoistVariableDeclaration, /*reservedInNestedScopes*/ true);
+                getClassLexicalEnvironment().classConstructor = factory.cloneNode(temp);
+                pendingClassReferenceAssignment = factory.createAssignment(temp, factory.getInternalName(node));
+            }
+
+            if (node.emitNode?.classThis) {
+                getClassLexicalEnvironment().classThis = node.emitNode.classThis;
+            }
         }
 
-        const modifiers = visitNodes(node.modifiers, visitor, isModifierLike);
+        const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
         const heritageClauses = visitNodes(node.heritageClauses, heritageClauseVisitor, isHeritageClause);
         const { members, prologue } = transformClassMembers(node);
         const classDecl = factory.updateClassDeclaration(
@@ -1457,7 +1862,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
             statements.push(factory.createExpressionStatement(factory.inlineExpressions(pendingExpressions)));
         }
 
-        if (shouldTransformInitializersUsingSet || shouldTransformPrivateElementsOrClassStaticBlocks) {
+        if (shouldTransformInitializersUsingSet || shouldTransformPrivateElementsOrClassStaticBlocks || getInternalEmitFlags(node) & InternalEmitFlags.TransformPrivateStaticElements) {
             // Emit static property assignment. Because classDeclaration is lexically evaluated,
             // it is safe to emit static property assignment after classDeclaration
             // From ES6 specification:
@@ -1473,11 +1878,11 @@ export function transformClassFields(context: TransformationContext): (x: Source
         return statements;
     }
 
-    function visitClassExpression(node: ClassExpression): Expression {
-        return visitInNewClassLexicalEnvironment(node, visitClassExpressionInNewClassLexicalEnvironment);
+    function visitClassExpression(node: ClassExpression, referencedName: Expression | undefined): Expression {
+        return visitInNewClassLexicalEnvironment(node, referencedName, visitClassExpressionInNewClassLexicalEnvironment);
     }
 
-    function visitClassExpressionInNewClassLexicalEnvironment(node: ClassExpression, facts: ClassFacts): Expression {
+    function visitClassExpressionInNewClassLexicalEnvironment(node: ClassExpression, facts: ClassFacts, referencedName: Expression | undefined): Expression {
         // If this class expression is a transformation of a decorated class declaration,
         // then we want to output the pendingExpressions as statements, not as inlined
         // expressions with the class statement.
@@ -1486,27 +1891,44 @@ export function transformClassFields(context: TransformationContext): (x: Source
         // class declaration transformation. The VariableStatement visitor will insert
         // these statements after the class expression variable statement.
         const isDecoratedClassDeclaration = !!(facts & ClassFacts.ClassWasDecorated);
-
         const staticPropertiesOrClassStaticBlocks = getStaticPropertiesAndClassStaticBlock(node);
-
         const isClassWithConstructorReference = resolver.getNodeCheckFlags(node) & NodeCheckFlags.ClassWithConstructorReference;
+
         let temp: Identifier | undefined;
         function createClassTempVar() {
+            // If we aren't transforming class static blocks, then we can't reuse `_classThis` since in
+            // `_classThis = class { ... static { _classThis = ... } }` the outer assignment would occur *after*
+            // class static blocks evaluate and would overwrite the replacement constructor produced by class
+            // decorators.
+
+            // If we are transforming class static blocks, then we can reuse `_classThis` since the assignment
+            // will be evaluated *before* the transformed static blocks are evaluated and thus won't overwrite
+            // the replacement constructor.
+
+            if (shouldTransformPrivateElementsOrClassStaticBlocks && node.emitNode?.classThis) {
+                return getClassLexicalEnvironment().classConstructor = node.emitNode.classThis;
+            }
+
             const classCheckFlags = resolver.getNodeCheckFlags(node);
             const isClassWithConstructorReference = classCheckFlags & NodeCheckFlags.ClassWithConstructorReference;
             const requiresBlockScopedVar = classCheckFlags & NodeCheckFlags.BlockScopedBindingInLoop;
-            return factory.createTempVariable(requiresBlockScopedVar ? addBlockScopedVariable : hoistVariableDeclaration, !!isClassWithConstructorReference);
+            const temp = factory.createTempVariable(requiresBlockScopedVar ? addBlockScopedVariable : hoistVariableDeclaration, !!isClassWithConstructorReference);
+            getClassLexicalEnvironment().classConstructor = factory.cloneNode(temp);
+            return temp;
+        }
+
+        if (node.emitNode?.classThis) {
+            getClassLexicalEnvironment().classThis = node.emitNode.classThis;
         }
 
         if (facts & ClassFacts.NeedsClassConstructorReference) {
-            temp = createClassTempVar();
-            getClassLexicalEnvironment().classConstructor = factory.cloneNode(temp);
+            temp ??= createClassTempVar();
         }
 
-        const modifiers = visitNodes(node.modifiers, visitor, isModifierLike);
+        const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
         const heritageClauses = visitNodes(node.heritageClauses, heritageClauseVisitor, isHeritageClause);
         const { members, prologue } = transformClassMembers(node);
-        const classExpression = factory.updateClassExpression(
+        let classExpression = factory.updateClassExpression(
             node,
             modifiers,
             node.name,
@@ -1523,39 +1945,61 @@ export function transformClassFields(context: TransformationContext): (x: Source
         // Static initializers are transformed to `static {}` blocks when `useDefineForClassFields: false`
         // and not also transforming static blocks.
         const hasTransformableStatics =
-            shouldTransformPrivateElementsOrClassStaticBlocks &&
+            (shouldTransformPrivateElementsOrClassStaticBlocks || getInternalEmitFlags(node) & InternalEmitFlags.TransformPrivateStaticElements) &&
             some(staticPropertiesOrClassStaticBlocks, node =>
                 isClassStaticBlockDeclaration(node) ||
                 isPrivateIdentifierClassElementDeclaration(node) ||
                 shouldTransformInitializers && isInitializedProperty(node));
 
-        if (hasTransformableStatics || some(pendingExpressions)) {
+        if (hasTransformableStatics || some(pendingExpressions) || referencedName) {
             if (isDecoratedClassDeclaration) {
                 Debug.assertIsDefined(pendingStatements, "Decorated classes transformed by TypeScript are expected to be within a variable declaration.");
 
                 // Write any pending expressions from elided or moved computed property names
-                if (pendingStatements && pendingExpressions && some(pendingExpressions)) {
-                    pendingStatements.push(factory.createExpressionStatement(factory.inlineExpressions(pendingExpressions)));
+                if (some(pendingExpressions)) {
+                    addRange(pendingStatements, map(pendingExpressions, factory.createExpressionStatement));
+                }
+
+                if (referencedName) {
+                    if (shouldTransformPrivateElementsOrClassStaticBlocks) {
+                        const setNameExpression = emitHelpers().createSetFunctionNameHelper(temp ?? node.emitNode?.classThis ?? factory.getInternalName(node), referencedName);
+                        pendingStatements.push(factory.createExpressionStatement(setNameExpression));
+                    }
+                    else {
+                        const setNameExpression = emitHelpers().createSetFunctionNameHelper(factory.createThis(), referencedName);
+                        classExpression = factory.updateClassExpression(
+                            classExpression,
+                            classExpression.modifiers,
+                            classExpression.name,
+                            classExpression.typeParameters,
+                            classExpression.heritageClauses, [
+                                factory.createClassStaticBlockDeclaration(
+                                    factory.createBlock([
+                                        factory.createExpressionStatement(setNameExpression)
+                                    ])
+                                ),
+                                ...classExpression.members
+                            ]
+                        );
+                    }
                 }
 
-                if (pendingStatements && some(staticPropertiesOrClassStaticBlocks)) {
-                    addPropertyOrClassStaticBlockStatements(pendingStatements, staticPropertiesOrClassStaticBlocks, factory.getInternalName(node));
+                if (some(staticPropertiesOrClassStaticBlocks)) {
+                    addPropertyOrClassStaticBlockStatements(pendingStatements, staticPropertiesOrClassStaticBlocks, node.emitNode?.classThis ?? factory.getInternalName(node));
                 }
 
                 if (temp) {
-                    expressions.push(
-                        startOnNewLine(factory.createAssignment(temp, classExpression)),
-                        startOnNewLine(temp));
+                    expressions.push(factory.createAssignment(temp, classExpression));
+                }
+                else if (shouldTransformPrivateElementsOrClassStaticBlocks && node.emitNode?.classThis) {
+                    expressions.push(factory.createAssignment(node.emitNode.classThis, classExpression));
                 }
                 else {
                     expressions.push(classExpression);
-                    if (prologue) {
-                        startOnNewLine(classExpression);
-                    }
                 }
             }
             else {
-                temp ||= createClassTempVar();
+                temp ??= createClassTempVar();
                 if (isClassWithConstructorReference) {
                     // record an alias as the class name is not in scope for statics.
                     enableSubstitutionForClassAliases();
@@ -1564,21 +2008,26 @@ export function transformClassFields(context: TransformationContext): (x: Source
                     classAliases[getOriginalNodeId(node)] = alias;
                 }
 
-                // To preserve the behavior of the old emitter, we explicitly indent
-                // the body of a class with static initializers.
-                setEmitFlags(classExpression, EmitFlags.Indented | getEmitFlags(classExpression));
-                expressions.push(startOnNewLine(factory.createAssignment(temp, classExpression)));
+                expressions.push(factory.createAssignment(temp, classExpression));
+
                 // Add any pending expressions leftover from elided or relocated computed property names
-                addRange(expressions, map(pendingExpressions, startOnNewLine));
+                addRange(expressions, pendingExpressions);
+                if (referencedName) {
+                    expressions.push(emitHelpers().createSetFunctionNameHelper(temp, referencedName));
+                }
                 addRange(expressions, generateInitializedPropertyExpressionsOrClassStaticBlock(staticPropertiesOrClassStaticBlocks, temp));
-                expressions.push(startOnNewLine(temp));
+                expressions.push(factory.cloneNode(temp));
             }
         }
         else {
             expressions.push(classExpression);
-            if (prologue) {
-                startOnNewLine(classExpression);
-            }
+        }
+
+        if (expressions.length > 1) {
+            // To preserve the behavior of the old emitter, we explicitly indent
+            // the body of a class with static initializers.
+            addEmitFlags(classExpression, EmitFlags.Indented);
+            expressions.forEach(startOnNewLine);
         }
 
         return factory.inlineExpressions(expressions);
@@ -1593,21 +2042,40 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function transformClassMembers(node: ClassDeclaration | ClassExpression) {
+        const shouldTransformPrivateStaticElementsInClass = !!(getInternalEmitFlags(node) & InternalEmitFlags.TransformPrivateStaticElements);
+
         // Declare private names
-        if (shouldTransformPrivateElementsOrClassStaticBlocks) {
+        if (shouldTransformPrivateElementsOrClassStaticBlocks || shouldTransformPrivateStaticElementsInFile) {
             for (const member of node.members) {
                 if (isPrivateIdentifierClassElementDeclaration(member)) {
-                    addPrivateIdentifierToEnvironment(member, member.name, addPrivateIdentifierClassElementToEnvironment);
+                    if (shouldTransformClassElementToWeakMap(member)) {
+                        addPrivateIdentifierToEnvironment(member, member.name, addPrivateIdentifierClassElementToEnvironment);
+                    }
+                    else {
+                        const privateEnv = getPrivateIdentifierEnvironment();
+                        setPrivateIdentifier(privateEnv, member.name, { kind: "untransformed" });
+                    }
                 }
             }
-            if (some(getPrivateInstanceMethodsAndAccessors(node))) {
-                createBrandCheckWeakSetForPrivateMethods();
+
+            if (shouldTransformPrivateElementsOrClassStaticBlocks) {
+                if (some(getPrivateInstanceMethodsAndAccessors(node))) {
+                    createBrandCheckWeakSetForPrivateMethods();
+                }
             }
-            if (shouldTransformAutoAccessors) {
+
+            if (shouldTransformAutoAccessorsInCurrentClass()) {
                 for (const member of node.members) {
                     if (isAutoAccessorPropertyDeclaration(member)) {
                         const storageName = factory.getGeneratedPrivateNameForNode(member.name, /*prefix*/ undefined, "_accessor_storage");
-                        addPrivateIdentifierToEnvironment(member, storageName, addPrivateIdentifierPropertyDeclarationToEnvironment);
+                        if (shouldTransformPrivateElementsOrClassStaticBlocks ||
+                            shouldTransformPrivateStaticElementsInClass && hasStaticModifier(member)) {
+                            addPrivateIdentifierToEnvironment(member, storageName, addPrivateIdentifierPropertyDeclarationToEnvironment);
+                        }
+                        else {
+                            const privateEnv = getPrivateIdentifierEnvironment();
+                            setPrivateIdentifier(privateEnv, storageName, { kind: "untransformed" });
+                        }
                     }
                 }
             }
@@ -1665,7 +2133,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function createBrandCheckWeakSetForPrivateMethods() {
-        const { weakSetName } = getPrivateIdentifierEnvironment();
+        const { weakSetName } = getPrivateIdentifierEnvironment().data;
         Debug.assert(weakSetName, "weakSetName should be set in private identifier environment");
 
         getPendingExpressions().push(
@@ -1682,7 +2150,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
 
     function transformConstructor(constructor: ConstructorDeclaration | undefined, container: ClassDeclaration | ClassExpression) {
         constructor = visitNode(constructor, visitor, isConstructorDeclaration);
-        if (!currentClassLexicalEnvironment || !(currentClassLexicalEnvironment.facts & ClassFacts.WillHoistInitializersToConstructor)) {
+        if (!lexicalEnvironment?.data || !(lexicalEnvironment.data.facts & ClassFacts.WillHoistInitializersToConstructor)) {
             return constructor;
         }
 
@@ -1715,7 +2183,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function transformConstructorBody(node: ClassDeclaration | ClassExpression, constructor: ConstructorDeclaration | undefined, isDerivedClass: boolean) {
-        let properties = getProperties(node, /*requireInitializer*/ false, /*isStatic*/ false);
+        const instanceProperties = getProperties(node, /*requireInitializer*/ false, /*isStatic*/ false);
+        let properties = instanceProperties;
         if (!useDefineForClassFields) {
             properties = filter(properties, property => !!property.initializer || isPrivateIdentifier(property.name) || hasAccessorModifier(property));
         }
@@ -1784,47 +2253,38 @@ export function transformClassFields(context: TransformationContext): (x: Source
         // We instead *remove* them from the transformed output at this stage.
         let parameterPropertyDeclarationCount = 0;
         if (constructor?.body) {
-            if (useDefineForClassFields) {
-                statements = statements.filter(statement => !isParameterPropertyDeclaration(getOriginalNode(statement), constructor));
-            }
-            else {
-                for (const statement of constructor.body.statements) {
-                    if (isParameterPropertyDeclaration(getOriginalNode(statement), constructor)) {
-                        parameterPropertyDeclarationCount++;
-                    }
+            // parameter-property assignments should occur immediately after the prologue and `super()`,
+            // so only count the statements that immediately follow.
+            for (let i = indexOfFirstStatementAfterSuperAndPrologue; i < constructor.body.statements.length; i++) {
+                const statement = constructor.body.statements[i];
+                if (isParameterPropertyDeclaration(getOriginalNode(statement), constructor)) {
+                    parameterPropertyDeclarationCount++;
                 }
-                if (parameterPropertyDeclarationCount > 0) {
-                    const parameterProperties = visitNodes(constructor.body.statements, visitor, isStatement, indexOfFirstStatementAfterSuperAndPrologue, parameterPropertyDeclarationCount);
-
-                    // If there was a super() call found, add parameter properties immediately after it
-                    if (superStatementIndex >= 0) {
-                        addRange(statements, parameterProperties);
-                    }
-                    else {
-                        // Add add parameter properties to the top of the constructor after the prologue
-                        let superAndPrologueStatementCount = prologueStatementCount;
-                        // If a synthetic super() call was added, need to account for that
-                        if (needsSyntheticConstructor) superAndPrologueStatementCount++;
-                        statements = [
-                            ...statements.slice(0, superAndPrologueStatementCount),
-                            ...parameterProperties,
-                            ...statements.slice(superAndPrologueStatementCount),
-                        ];
-                    }
-
-                    indexOfFirstStatementAfterSuperAndPrologue += parameterPropertyDeclarationCount;
+                else {
+                    break;
                 }
             }
+            if (parameterPropertyDeclarationCount > 0) {
+                indexOfFirstStatementAfterSuperAndPrologue += parameterPropertyDeclarationCount;
+            }
         }
 
         const receiver = factory.createThis();
         // private methods can be called in property initializers, they should execute first.
-        addMethodStatements(statements, privateMethodsAndAccessors, receiver);
-        addPropertyOrClassStaticBlockStatements(statements, properties, receiver);
+        addInstanceMethodStatements(statements, privateMethodsAndAccessors, receiver);
+        if (constructor) {
+            const parameterProperties = filter(instanceProperties, prop => isParameterPropertyDeclaration(getOriginalNode(prop), constructor));
+            const nonParameterProperties = filter(properties, prop => !isParameterPropertyDeclaration(getOriginalNode(prop), constructor));
+            addPropertyOrClassStaticBlockStatements(statements, parameterProperties, receiver);
+            addPropertyOrClassStaticBlockStatements(statements, nonParameterProperties, receiver);
+        }
+        else {
+            addPropertyOrClassStaticBlockStatements(statements, properties, receiver);
+        }
 
         // Add existing statements after the initial prologues and super call
         if (constructor) {
-            addRange(statements, visitNodes(constructor.body!.statements, visitBodyStatement, isStatement, indexOfFirstStatementAfterSuperAndPrologue));
+            addRange(statements, visitNodes(constructor.body!.statements, visitor, isStatement, indexOfFirstStatementAfterSuperAndPrologue));
         }
 
         statements = factory.mergeLexicalEnvironment(statements, endLexicalEnvironment());
@@ -1847,14 +2307,6 @@ export function transformClassFields(context: TransformationContext): (x: Source
             ),
             /*location*/ constructor ? constructor.body : undefined
         );
-
-        function visitBodyStatement(statement: Node) {
-            if (useDefineForClassFields && isParameterPropertyDeclaration(getOriginalNode(statement), constructor!)) {
-                return undefined;
-            }
-
-            return visitor(statement);
-        }
     }
 
     /**
@@ -1865,7 +2317,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
      */
     function addPropertyOrClassStaticBlockStatements(statements: Statement[], properties: readonly (PropertyDeclaration | ClassStaticBlockDeclaration)[], receiver: LeftHandSideExpression) {
         for (const property of properties) {
-            if (isStatic(property) && !shouldTransformPrivateElementsOrClassStaticBlocks && !useDefineForClassFields) {
+            if (isStatic(property) && !shouldTransformPrivateElementsOrClassStaticBlocks) {
                 continue;
             }
 
@@ -1889,15 +2341,30 @@ export function transformClassFields(context: TransformationContext): (x: Source
         const statement = factory.createExpressionStatement(expression);
         setOriginalNode(statement, property);
         addEmitFlags(statement, getEmitFlags(property) & EmitFlags.NoComments);
-        setSourceMapRange(statement, moveRangePastModifiers(property));
         setCommentRange(statement, property);
 
+        const propertyOriginalNode = getOriginalNode(property);
+        if (isParameter(propertyOriginalNode)) {
+            // replicate comment and source map behavior from the ts transform for parameter properties.
+            setSourceMapRange(statement, propertyOriginalNode);
+            removeAllComments(statement);
+        }
+        else {
+            setSourceMapRange(statement, moveRangePastModifiers(property));
+        }
+
         // `setOriginalNode` *copies* the `emitNode` from `property`, so now both
         // `statement` and `expression` have a copy of the synthesized comments.
         // Drop the comments from expression to avoid printing them twice.
         setSyntheticLeadingComments(expression, undefined);
         setSyntheticTrailingComments(expression, undefined);
 
+        // If the property was originally an auto-accessor, don't emit comments here since they will be attached to
+        // the synthezized getter.
+        if (hasAccessorModifier(propertyOriginalNode)) {
+            addEmitFlags(statement, EmitFlags.NoComments);
+        }
+
         return statement;
     }
 
@@ -1934,11 +2401,12 @@ export function transformClassFields(context: TransformationContext): (x: Source
     function transformProperty(property: PropertyDeclaration, receiver: LeftHandSideExpression) {
         const savedCurrentStaticPropertyDeclarationOrStaticBlock = currentStaticPropertyDeclarationOrStaticBlock;
         const transformed = transformPropertyWorker(property, receiver);
-        if (transformed && hasStaticModifier(property) && currentClassLexicalEnvironment?.facts) {
+        if (transformed && hasStaticModifier(property) && lexicalEnvironment?.data?.facts) {
             // capture the lexical environment for the member
             setOriginalNode(transformed, property);
             addEmitFlags(transformed, EmitFlags.AdviseOnEmitNode);
-            classLexicalEnvironmentMap.set(getOriginalNodeId(transformed), currentClassLexicalEnvironment);
+            setSourceMapRange(transformed, getSourceMapRange(property.name));
+            lexicalEnvironmentMap.set(getOriginalNode(property), lexicalEnvironment);
         }
         currentStaticPropertyDeclarationOrStaticBlock = savedCurrentStaticPropertyDeclarationOrStaticBlock;
         return transformed;
@@ -1948,6 +2416,19 @@ export function transformClassFields(context: TransformationContext): (x: Source
         // We generate a name here in order to reuse the value cached by the relocated computed name expression (which uses the same generated name)
         const emitAssignment = !useDefineForClassFields;
 
+        let referencedName: Expression | undefined;
+        if (isNamedEvaluation(property, isAnonymousClassNeedingAssignedName)) {
+            if (isPropertyNameLiteral(property.name) || isPrivateIdentifier(property.name)) {
+                referencedName = factory.createStringLiteralFromNode(property.name);
+            }
+            else if (isPropertyNameLiteral(property.name.expression) && !isIdentifier(property.name.expression)) {
+                referencedName = factory.createStringLiteralFromNode(property.name.expression);
+            }
+            else {
+                referencedName = factory.getGeneratedNameForNode(property.name);
+            }
+        }
+
         const propertyName =
             hasAccessorModifier(property) ?
                 factory.getGeneratedPrivateNameForNode(property.name) :
@@ -1959,21 +2440,25 @@ export function transformClassFields(context: TransformationContext): (x: Source
             currentStaticPropertyDeclarationOrStaticBlock = property;
         }
 
-        if (shouldTransformPrivateElementsOrClassStaticBlocks && isPrivateIdentifier(propertyName)) {
+        const initializerVisitor: Visitor =
+            referencedName ? child => namedEvaluationVisitor(child, referencedName!) :
+            visitor;
+
+        if (isPrivateIdentifier(propertyName) && shouldTransformClassElementToWeakMap(property as PrivateIdentifierPropertyDeclaration)) {
             const privateIdentifierInfo = accessPrivateIdentifier(propertyName);
             if (privateIdentifierInfo) {
                 if (privateIdentifierInfo.kind === PrivateIdentifierKind.Field) {
                     if (!privateIdentifierInfo.isStatic) {
                         return createPrivateInstanceFieldInitializer(
                             receiver,
-                            visitNode(property.initializer, visitor, isExpression),
+                            visitNode(property.initializer, initializerVisitor, isExpression),
                             privateIdentifierInfo.brandCheckIdentifier
                         );
                     }
                     else {
                         return createPrivateStaticFieldInitializer(
                             privateIdentifierInfo.variableName,
-                            visitNode(property.initializer, visitor, isExpression)
+                            visitNode(property.initializer, initializerVisitor, isExpression)
                         );
                     }
                 }
@@ -1994,13 +2479,39 @@ export function transformClassFields(context: TransformationContext): (x: Source
             return undefined;
         }
 
-        const initializer = property.initializer || emitAssignment ? visitNode(property.initializer, visitor, isExpression) ?? factory.createVoidZero()
-            : isParameterPropertyDeclaration(propertyOriginalNode, propertyOriginalNode.parent) && isIdentifier(propertyName) ? propertyName
-            : factory.createVoidZero();
+        let initializer = visitNode(property.initializer, initializerVisitor, isExpression);
+        if (isParameterPropertyDeclaration(propertyOriginalNode, propertyOriginalNode.parent) && isIdentifier(propertyName)) {
+            // A parameter-property declaration always overrides the initializer. The only time a parameter-property
+            // declaration *should* have an initializer is when decorators have added initializers that need to run before
+            // any other initializer
+            const localName = factory.cloneNode(propertyName);
+            if (initializer) {
+                // unwrap `(__runInitializers(this, _instanceExtraInitializers), void 0)`
+                if (isParenthesizedExpression(initializer) &&
+                    isCommaExpression(initializer.expression) &&
+                    isCallToHelper(initializer.expression.left, "___runInitializers" as __String) &&
+                    isVoidExpression(initializer.expression.right) &&
+                    isNumericLiteral(initializer.expression.right.expression)) {
+                    initializer = initializer.expression.left;
+                }
+                initializer = factory.inlineExpressions([initializer, localName]);
+            }
+            else {
+                initializer = localName;
+            }
+            setEmitFlags(propertyName, EmitFlags.NoComments | EmitFlags.NoSourceMap);
+            setSourceMapRange(localName, propertyOriginalNode.name);
+            setEmitFlags(localName, EmitFlags.NoComments);
+        }
+        else {
+            initializer ??= factory.createVoidZero();
+        }
 
         if (emitAssignment || isPrivateIdentifier(propertyName)) {
             const memberAccess = createMemberAccessForPropertyName(factory, receiver, propertyName, /*location*/ propertyName);
-            return factory.createAssignment(memberAccess, initializer);
+            addEmitFlags(memberAccess, EmitFlags.NoLeadingComments);
+            const expression = factory.createAssignment(memberAccess, initializer);
+            return expression;
         }
         else {
             const name = isComputedPropertyName(propertyName) ? propertyName.expression
@@ -2030,20 +2541,13 @@ export function transformClassFields(context: TransformationContext): (x: Source
 
             // substitute `this` in a static field initializer
             context.enableSubstitution(SyntaxKind.ThisKeyword);
-
-            // these push a new lexical environment that is not the class lexical environment
             context.enableEmitNotification(SyntaxKind.FunctionDeclaration);
             context.enableEmitNotification(SyntaxKind.FunctionExpression);
             context.enableEmitNotification(SyntaxKind.Constructor);
-
-            // these push a new lexical environment that is not the class lexical environment, except
-            // when they have a computed property name
             context.enableEmitNotification(SyntaxKind.GetAccessor);
             context.enableEmitNotification(SyntaxKind.SetAccessor);
             context.enableEmitNotification(SyntaxKind.MethodDeclaration);
             context.enableEmitNotification(SyntaxKind.PropertyDeclaration);
-
-            // class lexical environments are restored when entering a computed property name
             context.enableEmitNotification(SyntaxKind.ComputedPropertyName);
         }
     }
@@ -2055,12 +2559,12 @@ export function transformClassFields(context: TransformationContext): (x: Source
      * @param methods An array of method declarations.
      * @param receiver The receiver on which each method should be assigned.
      */
-    function addMethodStatements(statements: Statement[], methods: readonly (MethodDeclaration | AccessorDeclaration | AutoAccessorPropertyDeclaration)[], receiver: LeftHandSideExpression) {
+    function addInstanceMethodStatements(statements: Statement[], methods: readonly (MethodDeclaration | AccessorDeclaration | AutoAccessorPropertyDeclaration)[], receiver: LeftHandSideExpression) {
         if (!shouldTransformPrivateElementsOrClassStaticBlocks || !some(methods)) {
             return;
         }
 
-        const { weakSetName } = getPrivateIdentifierEnvironment();
+        const { weakSetName } = getPrivateIdentifierEnvironment().data;
         Debug.assert(weakSetName, "weakSetName should be set in private identifier environment");
         statements.push(
             factory.createExpressionStatement(
@@ -2078,140 +2582,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
             factory.updateElementAccessExpression(
                 node,
                 factory.createVoidZero(),
-                Debug.checkDefined(visitNode(node.argumentExpression, visitor, isExpression)));
-    }
-
-    function onEmitNode(hint: EmitHint, node: Node, emitCallback: (hint: EmitHint, node: Node) => void) {
-        const original = getOriginalNode(node);
-        if (original.id) {
-            const classLexicalEnvironment = classLexicalEnvironmentMap.get(original.id);
-            if (classLexicalEnvironment) {
-                const savedClassLexicalEnvironment = currentClassLexicalEnvironment;
-                const savedCurrentComputedPropertyNameClassLexicalEnvironment = currentComputedPropertyNameClassLexicalEnvironment;
-                currentClassLexicalEnvironment = classLexicalEnvironment;
-                currentComputedPropertyNameClassLexicalEnvironment = classLexicalEnvironment;
-                previousOnEmitNode(hint, node, emitCallback);
-                currentClassLexicalEnvironment = savedClassLexicalEnvironment;
-                currentComputedPropertyNameClassLexicalEnvironment = savedCurrentComputedPropertyNameClassLexicalEnvironment;
-                return;
-            }
-        }
-
-        switch (node.kind) {
-            case SyntaxKind.FunctionExpression:
-                if (isArrowFunction(original) || getEmitFlags(node) & EmitFlags.AsyncFunctionBody) {
-                    break;
-                }
-
-                // falls through
-            case SyntaxKind.FunctionDeclaration:
-            case SyntaxKind.Constructor: {
-                const savedClassLexicalEnvironment = currentClassLexicalEnvironment;
-                const savedCurrentComputedPropertyNameClassLexicalEnvironment = currentComputedPropertyNameClassLexicalEnvironment;
-                currentClassLexicalEnvironment = undefined;
-                currentComputedPropertyNameClassLexicalEnvironment = undefined;
-                previousOnEmitNode(hint, node, emitCallback);
-                currentClassLexicalEnvironment = savedClassLexicalEnvironment;
-                currentComputedPropertyNameClassLexicalEnvironment = savedCurrentComputedPropertyNameClassLexicalEnvironment;
-                return;
-            }
-
-            case SyntaxKind.GetAccessor:
-            case SyntaxKind.SetAccessor:
-            case SyntaxKind.MethodDeclaration:
-            case SyntaxKind.PropertyDeclaration: {
-                const savedClassLexicalEnvironment = currentClassLexicalEnvironment;
-                const savedCurrentComputedPropertyNameClassLexicalEnvironment = currentComputedPropertyNameClassLexicalEnvironment;
-                currentComputedPropertyNameClassLexicalEnvironment = currentClassLexicalEnvironment;
-                currentClassLexicalEnvironment = undefined;
-                previousOnEmitNode(hint, node, emitCallback);
-                currentClassLexicalEnvironment = savedClassLexicalEnvironment;
-                currentComputedPropertyNameClassLexicalEnvironment = savedCurrentComputedPropertyNameClassLexicalEnvironment;
-                return;
-            }
-            case SyntaxKind.ComputedPropertyName: {
-                const savedClassLexicalEnvironment = currentClassLexicalEnvironment;
-                const savedCurrentComputedPropertyNameClassLexicalEnvironment = currentComputedPropertyNameClassLexicalEnvironment;
-                currentClassLexicalEnvironment = currentComputedPropertyNameClassLexicalEnvironment;
-                currentComputedPropertyNameClassLexicalEnvironment = undefined;
-                previousOnEmitNode(hint, node, emitCallback);
-                currentClassLexicalEnvironment = savedClassLexicalEnvironment;
-                currentComputedPropertyNameClassLexicalEnvironment = savedCurrentComputedPropertyNameClassLexicalEnvironment;
-                return;
-            }
-        }
-        previousOnEmitNode(hint, node, emitCallback);
-    }
-
-    /**
-     * Hooks node substitutions.
-     *
-     * @param hint The context for the emitter.
-     * @param node The node to substitute.
-     */
-    function onSubstituteNode(hint: EmitHint, node: Node) {
-        node = previousOnSubstituteNode(hint, node);
-        if (hint === EmitHint.Expression) {
-            return substituteExpression(node as Expression);
-        }
-        return node;
-    }
-
-    function substituteExpression(node: Expression) {
-        switch (node.kind) {
-            case SyntaxKind.Identifier:
-                return substituteExpressionIdentifier(node as Identifier);
-            case SyntaxKind.ThisKeyword:
-                return substituteThisExpression(node as ThisExpression);
-        }
-        return node;
-    }
-
-    function substituteThisExpression(node: ThisExpression) {
-        if (enabledSubstitutions & ClassPropertySubstitutionFlags.ClassStaticThisOrSuperReference && currentClassLexicalEnvironment) {
-            const { facts, classConstructor } = currentClassLexicalEnvironment;
-            if (facts & ClassFacts.ClassWasDecorated) {
-                return factory.createParenthesizedExpression(factory.createVoidZero());
-            }
-            if (classConstructor) {
-                return setTextRange(
-                    setOriginalNode(
-                        factory.cloneNode(classConstructor),
-                        node,
-                    ),
-                    node
-                );
-            }
-        }
-        return node;
-    }
-
-    function substituteExpressionIdentifier(node: Identifier): Expression {
-        return trySubstituteClassAlias(node) || node;
-    }
-
-    function trySubstituteClassAlias(node: Identifier): Expression | undefined {
-        if (enabledSubstitutions & ClassPropertySubstitutionFlags.ClassAliases) {
-            if (resolver.getNodeCheckFlags(node) & NodeCheckFlags.ConstructorReferenceInClass) {
-                // Due to the emit for class decorators, any reference to the class from inside of the class body
-                // must instead be rewritten to point to a temporary variable to avoid issues with the double-bind
-                // behavior of class names in ES6.
-                // Also, when emitting statics for class expressions, we must substitute a class alias for
-                // constructor references in static property initializers.
-                const declaration = resolver.getReferencedValueDeclaration(node);
-                if (declaration) {
-                    const classAlias = classAliases[declaration.id!]; // TODO: GH#18217
-                    if (classAlias) {
-                        const clone = factory.cloneNode(classAlias);
-                        setSourceMapRange(clone, node);
-                        setCommentRange(clone, node);
-                        return clone;
-                    }
-                }
-            }
-        }
-
-        return undefined;
+                visitNode(node.argumentExpression, visitor, isExpression));
     }
 
     /**
@@ -2219,13 +2590,13 @@ export function transformClassFields(context: TransformationContext): (x: Source
      * value of the result or the expression itself if the value is either unused or safe to inline into multiple locations
      * @param shouldHoist Does the expression need to be reused? (ie, for an initializer or a decorator)
      */
-    function getPropertyNameExpressionIfNeeded(name: PropertyName, shouldHoist: boolean): Expression | undefined {
+    function getPropertyNameExpressionIfNeeded(name: PropertyName, shouldHoist: boolean, captureReferencedName: boolean): Expression | undefined {
         if (isComputedPropertyName(name)) {
-            const expression = visitNode(name.expression, visitor, isExpression);
-            Debug.assert(expression);
+            const cacheAssignment = findComputedPropertyNameCacheAssignment(name);
+            let expression = visitNode(name.expression, visitor, isExpression);
             const innerExpression = skipPartiallyEmittedExpressions(expression);
             const inlinable = isSimpleInlineableExpression(innerExpression);
-            const alreadyTransformed = isAssignmentExpression(innerExpression) && isGeneratedIdentifier(innerExpression.left);
+            const alreadyTransformed = !!cacheAssignment || isAssignmentExpression(innerExpression) && isGeneratedIdentifier(innerExpression.left);
             if (!alreadyTransformed && !inlinable && shouldHoist) {
                 const generatedName = factory.getGeneratedNameForNode(name);
                 if (resolver.getNodeCheckFlags(name) & NodeCheckFlags.BlockScopedBindingInLoop) {
@@ -2234,6 +2605,9 @@ export function transformClassFields(context: TransformationContext): (x: Source
                 else {
                     hoistVariableDeclaration(generatedName);
                 }
+                if (captureReferencedName) {
+                    expression = emitHelpers().createPropKeyHelper(expression);
+                }
                 return factory.createAssignment(generatedName, expression);
             }
             return (inlinable || isIdentifier(innerExpression)) ? undefined : expression;
@@ -2241,32 +2615,30 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function startClassLexicalEnvironment() {
-        classLexicalEnvironmentStack.push(currentClassLexicalEnvironment);
-        currentClassLexicalEnvironment = undefined;
+        lexicalEnvironment = { previous: lexicalEnvironment, data: undefined };
     }
 
     function endClassLexicalEnvironment() {
-        currentClassLexicalEnvironment = classLexicalEnvironmentStack.pop();
+        lexicalEnvironment = lexicalEnvironment?.previous;
     }
 
-    function getClassLexicalEnvironment() {
-        return currentClassLexicalEnvironment ||= {
+    function getClassLexicalEnvironment(): ClassLexicalEnvironment {
+        Debug.assert(lexicalEnvironment);
+        return lexicalEnvironment.data ??= {
             facts: ClassFacts.None,
             classConstructor: undefined,
+            classThis: undefined,
             superClassReference: undefined,
-            privateIdentifierEnvironment: undefined,
+            // privateIdentifierEnvironment: undefined,
         };
     }
 
-    function getPrivateIdentifierEnvironment() {
-        const lex = getClassLexicalEnvironment();
-        lex.privateIdentifierEnvironment ||= {
+    function getPrivateIdentifierEnvironment(): PrivateEnv {
+        Debug.assert(lexicalEnvironment);
+        return lexicalEnvironment.privateEnv ??= newPrivateEnvironment({
             className: undefined,
             weakSetName: undefined,
-            identifiers: undefined,
-            generatedIdentifiers: undefined,
-        };
-        return lex.privateIdentifierEnvironment;
+        });
     }
 
     function getPendingExpressions() {
@@ -2277,7 +2649,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
         node: PropertyDeclaration | MethodDeclaration | GetAccessorDeclaration | SetAccessorDeclaration,
         name: PrivateIdentifier,
         lex: ClassLexicalEnvironment,
-        privateEnv: PrivateIdentifierEnvironment,
+        privateEnv: PrivateEnv,
         isStatic: boolean,
         isValid: boolean,
         previousInfo: PrivateIdentifierInfo | undefined
@@ -2303,20 +2675,21 @@ export function transformClassFields(context: TransformationContext): (x: Source
         _node: PropertyDeclaration,
         name: PrivateIdentifier,
         lex: ClassLexicalEnvironment,
-        privateEnv: PrivateIdentifierEnvironment,
+        privateEnv: PrivateEnv,
         isStatic: boolean,
         isValid: boolean,
         _previousInfo: PrivateIdentifierInfo | undefined
     ) {
         if (isStatic) {
-            Debug.assert(lex.classConstructor, "classConstructor should be set in private identifier environment");
+            const brandCheckIdentifier =
+                Debug.checkDefined(lex.classThis ?? lex.classConstructor, "classConstructor should be set in private identifier environment");
 
             const variableName = createHoistedVariableForPrivateName(name);
             setPrivateIdentifier(privateEnv, name, {
                 kind: PrivateIdentifierKind.Field,
-                brandCheckIdentifier: lex.classConstructor,
-                variableName,
                 isStatic: true,
+                brandCheckIdentifier,
+                variableName,
                 isValid,
             });
         }
@@ -2325,9 +2698,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
 
             setPrivateIdentifier(privateEnv, name, {
                 kind: PrivateIdentifierKind.Field,
-                brandCheckIdentifier: weakMapName,
-                variableName: undefined,
                 isStatic: false,
+                brandCheckIdentifier: weakMapName,
                 isValid,
             });
 
@@ -2346,15 +2718,15 @@ export function transformClassFields(context: TransformationContext): (x: Source
         _node: MethodDeclaration,
         name: PrivateIdentifier,
         lex: ClassLexicalEnvironment,
-        privateEnv: PrivateIdentifierEnvironment,
+        privateEnv: PrivateEnv,
         isStatic: boolean,
         isValid: boolean,
         _previousInfo: PrivateIdentifierInfo | undefined
     ) {
         const methodName = createHoistedVariableForPrivateName(name);
         const brandCheckIdentifier = isStatic ?
-            Debug.checkDefined(lex.classConstructor, "classConstructor should be set in private identifier environment") :
-            Debug.checkDefined(privateEnv.weakSetName, "weakSetName should be set in private identifier environment");
+            Debug.checkDefined(lex.classThis ?? lex.classConstructor, "classConstructor should be set in private identifier environment") :
+            Debug.checkDefined(privateEnv.data.weakSetName, "weakSetName should be set in private identifier environment");
 
         setPrivateIdentifier(privateEnv, name, {
             kind: PrivateIdentifierKind.Method,
@@ -2369,15 +2741,15 @@ export function transformClassFields(context: TransformationContext): (x: Source
         _node: GetAccessorDeclaration,
         name: PrivateIdentifier,
         lex: ClassLexicalEnvironment,
-        privateEnv: PrivateIdentifierEnvironment,
+        privateEnv: PrivateEnv,
         isStatic: boolean,
         isValid: boolean,
         previousInfo: PrivateIdentifierInfo | undefined
     ) {
         const getterName = createHoistedVariableForPrivateName(name, "_get");
         const brandCheckIdentifier = isStatic ?
-            Debug.checkDefined(lex.classConstructor, "classConstructor should be set in private identifier environment") :
-            Debug.checkDefined(privateEnv.weakSetName, "weakSetName should be set in private identifier environment");
+            Debug.checkDefined(lex.classThis ?? lex.classConstructor, "classConstructor should be set in private identifier environment") :
+            Debug.checkDefined(privateEnv.data.weakSetName, "weakSetName should be set in private identifier environment");
 
         if (previousInfo?.kind === PrivateIdentifierKind.Accessor && previousInfo.isStatic === isStatic && !previousInfo.getterName) {
             previousInfo.getterName = getterName;
@@ -2398,17 +2770,18 @@ export function transformClassFields(context: TransformationContext): (x: Source
         _node: SetAccessorDeclaration,
         name: PrivateIdentifier,
         lex: ClassLexicalEnvironment,
-        privateEnv: PrivateIdentifierEnvironment,
+        privateEnv: PrivateEnv,
         isStatic: boolean,
         isValid: boolean,
         previousInfo: PrivateIdentifierInfo | undefined
     ) {
         const setterName = createHoistedVariableForPrivateName(name, "_set");
         const brandCheckIdentifier = isStatic ?
-            Debug.checkDefined(lex.classConstructor, "classConstructor should be set in private identifier environment") :
-            Debug.checkDefined(privateEnv.weakSetName, "weakSetName should be set in private identifier environment");
+            Debug.checkDefined(lex.classThis ?? lex.classConstructor, "classConstructor should be set in private identifier environment") :
+            Debug.checkDefined(privateEnv.data.weakSetName, "weakSetName should be set in private identifier environment");
 
-        if (previousInfo?.kind === PrivateIdentifierKind.Accessor && previousInfo.isStatic === isStatic && !previousInfo.setterName) {
+        if (previousInfo?.kind === PrivateIdentifierKind.Accessor &&
+            previousInfo.isStatic === isStatic && !previousInfo.setterName) {
             previousInfo.setterName = setterName;
         }
         else {
@@ -2427,7 +2800,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
         _node: AutoAccessorPropertyDeclaration,
         name: PrivateIdentifier,
         lex: ClassLexicalEnvironment,
-        privateEnv: PrivateIdentifierEnvironment,
+        privateEnv: PrivateEnv,
         isStatic: boolean,
         isValid: boolean,
         _previousInfo: PrivateIdentifierInfo | undefined
@@ -2435,8 +2808,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
         const getterName = createHoistedVariableForPrivateName(name, "_get");
         const setterName = createHoistedVariableForPrivateName(name, "_set");
         const brandCheckIdentifier = isStatic ?
-            Debug.checkDefined(lex.classConstructor, "classConstructor should be set in private identifier environment") :
-            Debug.checkDefined(privateEnv.weakSetName, "weakSetName should be set in private identifier environment");
+            Debug.checkDefined(lex.classThis ?? lex.classConstructor, "classConstructor should be set in private identifier environment") :
+            Debug.checkDefined(privateEnv.data.weakSetName, "weakSetName should be set in private identifier environment");
 
         setPrivateIdentifier(privateEnv, name, {
             kind: PrivateIdentifierKind.Accessor,
@@ -2455,7 +2828,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
             node: T,
             name: PrivateIdentifier,
             lex: ClassLexicalEnvironment,
-            privateEnv: PrivateIdentifierEnvironment,
+            privateEnv: PrivateEnv,
             isStatic: boolean,
             isValid: boolean,
             previousInfo: PrivateIdentifierInfo | undefined
@@ -2470,7 +2843,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
     }
 
     function createHoistedVariableForClass(name: string | PrivateIdentifier | undefined, node: PrivateIdentifier | ClassStaticBlockDeclaration, suffix?: string): Identifier {
-        const { className } = getPrivateIdentifierEnvironment();
+        const { className } = getPrivateIdentifierEnvironment().data;
         const prefix: GeneratedNamePart | string = className ? { prefix: "_", node: className, suffix: "_" } : "_";
         const identifier =
             typeof name === "object" ? factory.getGeneratedNameForNode(name, GeneratedIdentifierFlags.Optimistic | GeneratedIdentifierFlags.ReservedInNestedScopes, prefix, suffix) :
@@ -2498,45 +2871,8 @@ export function transformClassFields(context: TransformationContext): (x: Source
      * @seealso {@link addPrivateIdentifierToEnvironment}
      */
     function accessPrivateIdentifier(name: PrivateIdentifier) {
-        if (isGeneratedPrivateIdentifier(name)) {
-            return accessGeneratedPrivateIdentifier(name);
-        }
-        else {
-            return accessPrivateIdentifierByText(name.escapedText);
-        }
-    }
-
-    function accessPrivateIdentifierByText(text: __String) {
-        return accessPrivateIdentifierWorker(getPrivateIdentifierInfo, text);
-    }
-
-    function accessGeneratedPrivateIdentifier(name: GeneratedPrivateIdentifier) {
-        return accessPrivateIdentifierWorker(getGeneratedPrivateIdentifierInfo, getNodeForGeneratedName(name));
-    }
-
-    function accessPrivateIdentifierWorker<K extends __String | Node>(
-        getPrivateIdentifierInfo: (privateEnv: PrivateIdentifierEnvironment, key: K) => PrivateIdentifierInfo | undefined,
-        privateIdentifierKey: K
-    ) {
-        if (currentClassLexicalEnvironment?.privateIdentifierEnvironment) {
-            const info = getPrivateIdentifierInfo(currentClassLexicalEnvironment.privateIdentifierEnvironment, privateIdentifierKey);
-            if (info) {
-                return info;
-            }
-        }
-        for (let i = classLexicalEnvironmentStack.length - 1; i >= 0; --i) {
-            const env = classLexicalEnvironmentStack[i];
-            if (!env) {
-                continue;
-            }
-            if (env.privateIdentifierEnvironment) {
-                const info = getPrivateIdentifierInfo(env.privateIdentifierEnvironment, privateIdentifierKey);
-                if (info) {
-                    return info;
-                }
-            }
-        }
-        return undefined;
+        const info = accessPrivateIdentifierCommon(lexicalEnvironment, name);
+        return info?.kind === "untransformed" ? undefined : info;
     }
 
     function wrapPrivateIdentifierForDestructuringTarget(node: PrivateIdentifierPropertyAccessExpression) {
@@ -2550,7 +2886,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
         // differently inside the function.
         if (isThisProperty(node) || isSuperProperty(node) || !isSimpleCopiableExpression(node.expression)) {
             receiver = factory.createTempVariable(hoistVariableDeclaration, /*reservedInNestedScopes*/ true);
-            getPendingExpressions().push(factory.createBinaryExpression(receiver, SyntaxKind.EqualsToken, Debug.checkDefined(visitNode(node.expression, visitor, isExpression))));
+            getPendingExpressions().push(factory.createBinaryExpression(receiver, SyntaxKind.EqualsToken, visitNode(node.expression, visitor, isExpression)));
         }
         return factory.createAssignmentTargetWrapper(
             parameter,
@@ -2563,116 +2899,145 @@ export function transformClassFields(context: TransformationContext): (x: Source
         );
     }
 
-    function visitArrayAssignmentTarget(node: Node) {
-        Debug.assertNode(node, isBindingOrAssignmentElement);
-        const target = getTargetOfBindingOrAssignmentElement(node);
-        if (target) {
-            let wrapped: LeftHandSideExpression | undefined;
-            if (isPrivateIdentifierPropertyAccessExpression(target)) {
-                wrapped = wrapPrivateIdentifierForDestructuringTarget(target);
+    function visitDestructuringAssignmentTarget(node: LeftHandSideExpression): LeftHandSideExpression {
+        if (isObjectLiteralExpression(node) || isArrayLiteralExpression(node)) {
+            return visitAssignmentPattern(node);
+        }
+
+        if (isPrivateIdentifierPropertyAccessExpression(node)) {
+            return wrapPrivateIdentifierForDestructuringTarget(node);
+        }
+        else if (shouldTransformSuperInStaticInitializers &&
+            isSuperProperty(node) &&
+            currentStaticPropertyDeclarationOrStaticBlock &&
+            lexicalEnvironment?.data) {
+            const { classConstructor, superClassReference, facts } = lexicalEnvironment.data;
+            if (facts & ClassFacts.ClassWasDecorated) {
+                return visitInvalidSuperProperty(node);
             }
-            else if (shouldTransformSuperInStaticInitializers &&
-                isSuperProperty(target) &&
-                currentStaticPropertyDeclarationOrStaticBlock &&
-                currentClassLexicalEnvironment) {
-                const { classConstructor, superClassReference, facts } = currentClassLexicalEnvironment;
-                if (facts & ClassFacts.ClassWasDecorated) {
-                    wrapped = visitInvalidSuperProperty(target);
-                }
-                else if (classConstructor && superClassReference) {
-                    const name =
-                        isElementAccessExpression(target) ? visitNode(target.argumentExpression, visitor, isExpression) :
-                        isIdentifier(target.name) ? factory.createStringLiteralFromNode(target.name) :
-                        undefined;
-                    if (name) {
-                        const temp = factory.createTempVariable(/*recordTempVariable*/ undefined);
-                        wrapped = factory.createAssignmentTargetWrapper(
+            else if (classConstructor && superClassReference) {
+                const name =
+                    isElementAccessExpression(node) ? visitNode(node.argumentExpression, visitor, isExpression) :
+                    isIdentifier(node.name) ? factory.createStringLiteralFromNode(node.name) :
+                    undefined;
+                if (name) {
+                    const temp = factory.createTempVariable(/*recordTempVariable*/ undefined);
+                    return factory.createAssignmentTargetWrapper(
+                        temp,
+                        factory.createReflectSetCall(
+                            superClassReference,
+                            name,
                             temp,
-                            factory.createReflectSetCall(
-                                superClassReference,
-                                name,
-                                temp,
-                                classConstructor,
-                            )
-                        );
-                    }
-                }
-            }
-            if (wrapped) {
-                if (isAssignmentExpression(node)) {
-                    return factory.updateBinaryExpression(
-                        node,
-                        wrapped,
-                        node.operatorToken,
-                        Debug.checkDefined(visitNode(node.right, visitor, isExpression))
+                            classConstructor,
+                        )
                     );
                 }
-                else if (isSpreadElement(node)) {
-                    return factory.updateSpreadElement(node, wrapped);
-                }
-                else {
-                    return wrapped;
-                }
             }
         }
-        return visitNode(node, assignmentTargetVisitor);
+        return visitEachChild(node, visitor, context);
     }
 
-    function visitObjectAssignmentTarget(node: ObjectLiteralElementLike) {
-        if (isObjectBindingOrAssignmentElement(node) && !isShorthandPropertyAssignment(node)) {
-            const target = getTargetOfBindingOrAssignmentElement(node);
-            let wrapped: LeftHandSideExpression | undefined;
-            if (target) {
-                if (isPrivateIdentifierPropertyAccessExpression(target)) {
-                    wrapped = wrapPrivateIdentifierForDestructuringTarget(target);
-                }
-                else if (shouldTransformSuperInStaticInitializers &&
-                    isSuperProperty(target) &&
-                    currentStaticPropertyDeclarationOrStaticBlock &&
-                    currentClassLexicalEnvironment) {
-                    const { classConstructor, superClassReference, facts } = currentClassLexicalEnvironment;
-                    if (facts & ClassFacts.ClassWasDecorated) {
-                        wrapped = visitInvalidSuperProperty(target);
-                    }
-                    else if (classConstructor && superClassReference) {
-                        const name =
-                            isElementAccessExpression(target) ? visitNode(target.argumentExpression, visitor, isExpression) :
-                            isIdentifier(target.name) ? factory.createStringLiteralFromNode(target.name) :
-                            undefined;
-                        if (name) {
-                            const temp = factory.createTempVariable(/*recordTempVariable*/ undefined);
-                            wrapped = factory.createAssignmentTargetWrapper(
-                                temp,
-                                factory.createReflectSetCall(
-                                    superClassReference,
-                                    name,
-                                    temp,
-                                    classConstructor,
-                                )
-                            );
-                        }
-                    }
-                }
-            }
-            if (isPropertyAssignment(node)) {
-                const initializer = getInitializerOfBindingOrAssignmentElement(node);
-                return factory.updatePropertyAssignment(
-                    node,
-                    Debug.checkDefined(visitNode(node.name, visitor, isPropertyName)),
-                    wrapped ?
-                        initializer ? factory.createAssignment(wrapped, Debug.checkDefined(visitNode(initializer, visitor, isExpression))) : wrapped :
-                        Debug.checkDefined(visitNode(node.initializer, assignmentTargetVisitor, isExpression))
-                );
-            }
-            if (isSpreadAssignment(node)) {
-                return factory.updateSpreadAssignment(
-                    node,
-                    wrapped || Debug.checkDefined(visitNode(node.expression, assignmentTargetVisitor, isExpression))
-                );
-            }
-            Debug.assert(wrapped === undefined, "Should not have generated a wrapped target");
+    function visitAssignmentElement(node: Exclude<ArrayAssignmentElement, SpreadElement | OmittedExpression>): ArrayAssignmentElement {
+        // 13.15.5.5 RS: IteratorDestructuringAssignmentEvaluation
+        //   AssignmentElement : DestructuringAssignmentTarget Initializer?
+        //     ...
+        //     4. If |Initializer| is present and _value_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) and IsIdentifierRef of |DestructuringAssignmentTarget| are both *true*, then
+        //           i. Let _v_ be ? NamedEvaluation of |Initializer| with argument _lref_.[[ReferencedName]].
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const left = visitDestructuringAssignmentTarget(node.left);
+            const assignedName = getAssignedNameOfIdentifier(node.left, node.right);
+            const right = visitNode(node.right, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateBinaryExpression(node, left, node.operatorToken, right) as AssignmentExpression<EqualsToken>;
+        }
+        if (isAssignmentExpression(node, /*excludeCompoundAssignment*/ true)) {
+            const left = visitDestructuringAssignmentTarget(node.left);
+            const right = visitNode(node.right, visitor, isExpression);
+            return factory.updateBinaryExpression(node, left, node.operatorToken, right) as AssignmentExpression<EqualsToken>;
         }
-        return visitNode(node, visitor);
+        return visitDestructuringAssignmentTarget(node) as ArrayAssignmentElement;
+    }
+
+    function visitAssignmentRestElement(node: SpreadElement) {
+        if (isLeftHandSideExpression(node.expression)) {
+            const expression = visitDestructuringAssignmentTarget(node.expression);
+            return factory.updateSpreadElement(node, expression);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitArrayAssignmentElement(node: Expression): Expression {
+        Debug.assertNode(node, isArrayBindingOrAssignmentElement);
+        if (isSpreadElement(node)) return visitAssignmentRestElement(node);
+        if (!isOmittedExpression(node)) return visitAssignmentElement(node);
+        return visitEachChild(node, visitor, context);
+
+    }
+
+    function visitAssignmentProperty(node: PropertyAssignment) {
+        // AssignmentProperty : PropertyName `:` AssignmentElement
+        // AssignmentElement : DestructuringAssignmentTarget Initializer?
+
+        // 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+        //   AssignmentElement : DestructuringAssignmentTarget Initializer?
+        //     ...
+        //     3. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousfunctionDefinition(|Initializer|) and IsIdentifierRef of |DestructuringAssignmentTarget| are both *true*, then
+        //           i. Let _rhsValue_ be ? NamedEvaluation of |Initializer| with argument _lref_.[[ReferencedName]].
+        //     ...
+
+        const name = visitNode(node.name, visitor, isPropertyName);
+        if (isAssignmentExpression(node.initializer, /*excludeCompoundAssignment*/ true)) {
+            const assignmentElement = visitAssignmentElement(node.initializer);
+            return factory.updatePropertyAssignment(node, name, assignmentElement);
+        }
+
+        if (isLeftHandSideExpression(node.initializer)) {
+            const assignmentElement = visitDestructuringAssignmentTarget(node.initializer);
+            return factory.updatePropertyAssignment(node, name, assignmentElement);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitShorthandAssignmentProperty(node: ShorthandPropertyAssignment) {
+        // AssignmentProperty : IdentifierReference Initializer?
+
+        // 13.15.5.3 RS: PropertyDestructuringAssignmentEvaluation
+        //   AssignmentProperty : IdentifierReference Initializer?
+        //     ...
+        //     4. If |Initializer?| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _P_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.objectAssignmentInitializer);
+            const objectAssignmentInitializer = visitNode(node.objectAssignmentInitializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateShorthandPropertyAssignment(node, node.name, objectAssignmentInitializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitAssignmentRestProperty(node: SpreadAssignment) {
+        if (isLeftHandSideExpression(node.expression)) {
+            const expression = visitDestructuringAssignmentTarget(node.expression);
+            return factory.updateSpreadAssignment(node, expression);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitObjectAssignmentElement(node: ObjectLiteralElement) {
+        Debug.assertNode(node, isObjectBindingOrAssignmentElement);
+        if (isSpreadAssignment(node)) return visitAssignmentRestProperty(node);
+        if (isShorthandPropertyAssignment(node)) return visitShorthandAssignmentProperty(node);
+        if (isPropertyAssignment(node)) return visitAssignmentProperty(node);
+        return visitEachChild(node, visitor, context);
     }
 
     function visitAssignmentPattern(node: AssignmentPattern) {
@@ -2687,7 +3052,7 @@ export function transformClassFields(context: TransformationContext): (x: Source
             // [ { set value(x) { this.#myProp = x; } }.value ] = [ "hello" ];
             return factory.updateArrayLiteralExpression(
                 node,
-                visitNodes(node.elements, visitArrayAssignmentTarget, isExpression)
+                visitNodes(node.elements, visitArrayAssignmentElement, isExpression)
             );
         }
         else {
@@ -2701,10 +3066,144 @@ export function transformClassFields(context: TransformationContext): (x: Source
             // ({ stringProperty: { set value(x) { this.#myProp = x; } }.value }) = { stringProperty: "hello" };
             return factory.updateObjectLiteralExpression(
                 node,
-                visitNodes(node.properties, visitObjectAssignmentTarget, isObjectLiteralElementLike)
+                visitNodes(node.properties, visitObjectAssignmentElement, isObjectLiteralElementLike)
             );
         }
     }
+
+    function onEmitNode(hint: EmitHint, node: Node, emitCallback: (hint: EmitHint, node: Node) => void) {
+        const original = getOriginalNode(node);
+        const lex = lexicalEnvironmentMap.get(original);
+        if (lex) {
+            // If we've associated a lexical environment with the original node for this node, use it explicitly.
+            const savedLexicalEnvironment = lexicalEnvironment;
+            const savedPreviousShouldSubstituteThisWithClassThis = previousShouldSubstituteThisWithClassThis;
+            lexicalEnvironment = lex;
+            previousShouldSubstituteThisWithClassThis = shouldSubstituteThisWithClassThis;
+            shouldSubstituteThisWithClassThis = !isClassStaticBlockDeclaration(original) || !(getInternalEmitFlags(original) & InternalEmitFlags.TransformPrivateStaticElements);
+            previousOnEmitNode(hint, node, emitCallback);
+            shouldSubstituteThisWithClassThis = previousShouldSubstituteThisWithClassThis;
+            previousShouldSubstituteThisWithClassThis = savedPreviousShouldSubstituteThisWithClassThis;
+            lexicalEnvironment = savedLexicalEnvironment;
+            return;
+        }
+
+        switch (node.kind) {
+            case SyntaxKind.FunctionExpression:
+                if (isArrowFunction(original) || getEmitFlags(node) & EmitFlags.AsyncFunctionBody) {
+                    // Arrow functions and functions that serve as the transformed body of an async function should
+                    // preserve the outer lexical environment.
+                    break;
+                }
+                // falls through
+
+            case SyntaxKind.FunctionDeclaration:
+            case SyntaxKind.Constructor:
+            case SyntaxKind.GetAccessor:
+            case SyntaxKind.SetAccessor:
+            case SyntaxKind.MethodDeclaration:
+            case SyntaxKind.PropertyDeclaration: {
+                // Other function bodies and property declarations should clear the lexical environment.
+                // Note that this won't happen if a lexical environment was bound to the original node as that
+                // was handled above.
+                const savedLexicalEnvironment = lexicalEnvironment;
+                const savedPreviousShouldSubstituteThisWithClassThis = previousShouldSubstituteThisWithClassThis;
+                lexicalEnvironment = undefined;
+                previousShouldSubstituteThisWithClassThis = shouldSubstituteThisWithClassThis;
+                shouldSubstituteThisWithClassThis = false;
+                previousOnEmitNode(hint, node, emitCallback);
+                shouldSubstituteThisWithClassThis = previousShouldSubstituteThisWithClassThis;
+                previousShouldSubstituteThisWithClassThis = savedPreviousShouldSubstituteThisWithClassThis;
+                lexicalEnvironment = savedLexicalEnvironment;
+                return;
+            }
+
+            case SyntaxKind.ComputedPropertyName: {
+                // Computed property names should use the outer lexical environment.
+                const savedLexicalEnvironment = lexicalEnvironment;
+                const savedShouldSubstituteThisWithClassThis = shouldSubstituteThisWithClassThis;
+                lexicalEnvironment = lexicalEnvironment?.previous;
+                shouldSubstituteThisWithClassThis = previousShouldSubstituteThisWithClassThis;
+                previousOnEmitNode(hint, node, emitCallback);
+                shouldSubstituteThisWithClassThis = savedShouldSubstituteThisWithClassThis;
+                lexicalEnvironment = savedLexicalEnvironment;
+                return;
+            }
+        }
+        previousOnEmitNode(hint, node, emitCallback);
+    }
+
+    /**
+     * Hooks node substitutions.
+     *
+     * @param hint The context for the emitter.
+     * @param node The node to substitute.
+     */
+    function onSubstituteNode(hint: EmitHint, node: Node) {
+        node = previousOnSubstituteNode(hint, node);
+        if (hint === EmitHint.Expression) {
+            return substituteExpression(node as Expression);
+        }
+        return node;
+    }
+
+    function substituteExpression(node: Expression) {
+        switch (node.kind) {
+            case SyntaxKind.Identifier:
+                return substituteExpressionIdentifier(node as Identifier);
+            case SyntaxKind.ThisKeyword:
+                return substituteThisExpression(node as ThisExpression);
+        }
+        return node;
+    }
+
+    function substituteThisExpression(node: ThisExpression) {
+        if (enabledSubstitutions & ClassPropertySubstitutionFlags.ClassStaticThisOrSuperReference && lexicalEnvironment?.data) {
+            const { facts, classConstructor, classThis } = lexicalEnvironment.data;
+            if (facts & ClassFacts.ClassWasDecorated && legacyDecorators) {
+                return factory.createParenthesizedExpression(factory.createVoidZero());
+            }
+            const substituteThis = shouldSubstituteThisWithClassThis ? classThis ?? classConstructor : classConstructor;
+            if (substituteThis) {
+                return setTextRange(
+                    setOriginalNode(
+                        factory.cloneNode(substituteThis),
+                        node,
+                    ),
+                    node
+                );
+            }
+        }
+        return node;
+    }
+
+    function substituteExpressionIdentifier(node: Identifier): Expression {
+        return trySubstituteClassAlias(node) || node;
+    }
+
+    function trySubstituteClassAlias(node: Identifier): Expression | undefined {
+        if (enabledSubstitutions & ClassPropertySubstitutionFlags.ClassAliases) {
+            if (resolver.getNodeCheckFlags(node) & NodeCheckFlags.ConstructorReferenceInClass) {
+                // Due to the emit for class decorators, any reference to the class from inside of the class body
+                // must instead be rewritten to point to a temporary variable to avoid issues with the double-bind
+                // behavior of class names in ES6.
+                // Also, when emitting statics for class expressions, we must substitute a class alias for
+                // constructor references in static property initializers.
+                const declaration = resolver.getReferencedValueDeclaration(node);
+                if (declaration) {
+                    const classAlias = classAliases[declaration.id!]; // TODO: GH#18217
+                    if (classAlias) {
+                        const clone = factory.cloneNode(classAlias);
+                        setSourceMapRange(clone, node);
+                        setCommentRange(clone, node);
+                        return clone;
+                    }
+                }
+            }
+        }
+
+        return undefined;
+    }
 }
 
 function createPrivateStaticFieldInitializer(variableName: Identifier, initializer: Expression | undefined) {
@@ -2736,27 +3235,9 @@ function isReservedPrivateName(node: PrivateIdentifier) {
     return !isGeneratedPrivateIdentifier(node) && node.escapedText === "#constructor";
 }
 
-function getPrivateIdentifier(privateEnv: PrivateIdentifierEnvironment, name: PrivateIdentifier) {
-    return isGeneratedPrivateIdentifier(name) ?
-        getGeneratedPrivateIdentifierInfo(privateEnv, getNodeForGeneratedName(name)) :
-        getPrivateIdentifierInfo(privateEnv, name.escapedText);
-}
-
-function setPrivateIdentifier(privateEnv: PrivateIdentifierEnvironment, name: PrivateIdentifier, info: PrivateIdentifierInfo) {
-    if (isGeneratedPrivateIdentifier(name)) {
-        privateEnv.generatedIdentifiers ??= new Map();
-        privateEnv.generatedIdentifiers.set(getNodeForGeneratedName(name), info);
-    }
-    else {
-        privateEnv.identifiers ??= new Map();
-        privateEnv.identifiers.set(name.escapedText, info);
-    }
-}
-
-function getPrivateIdentifierInfo(privateEnv: PrivateIdentifierEnvironment, key: __String) {
-    return privateEnv.identifiers?.get(key);
-}
+type PrivateIdentifierInExpression = BinaryExpression & { readonly left: PrivateIdentifier, readonly token: InKeyword };
 
-function getGeneratedPrivateIdentifierInfo(privateEnv: PrivateIdentifierEnvironment, key: Node) {
-    return privateEnv.generatedIdentifiers?.get(key);
+function isPrivateIdentifierInExpression(node: BinaryExpression): node is PrivateIdentifierInExpression {
+    return isPrivateIdentifier(node.left)
+        && node.operatorToken.kind === SyntaxKind.InKeyword;
 }
diff --git a/src/compiler/transformers/declarations.ts b/src/compiler/transformers/declarations.ts
index e14bd6d5fe250..c9c8fb39df353 100644
--- a/src/compiler/transformers/declarations.ts
+++ b/src/compiler/transformers/declarations.ts
@@ -857,13 +857,13 @@ export function transformDeclarations(context: TransformationContext) {
         }
     }
 
-    function updateParamsList(node: Node, params: NodeArray<ParameterDeclaration>, modifierMask?: ModifierFlags) {
+    function updateParamsList(node: Node, params: NodeArray<ParameterDeclaration>, modifierMask?: ModifierFlags): NodeArray<ParameterDeclaration> {
         if (hasEffectiveModifier(node, ModifierFlags.Private)) {
-            return undefined!; // TODO: GH#18217
+            return factory.createNodeArray();
         }
         const newParams = map(params, p => ensureParameter(p, modifierMask));
         if (!newParams) {
-            return undefined!; // TODO: GH#18217
+            return factory.createNodeArray();
         }
         return factory.createNodeArray(newParams, params.hasTrailingComma);
     }
diff --git a/src/compiler/transformers/es2015.ts b/src/compiler/transformers/es2015.ts
index c2e9bdaf2b79a..bf5cc72878a76 100644
--- a/src/compiler/transformers/es2015.ts
+++ b/src/compiler/transformers/es2015.ts
@@ -65,6 +65,7 @@ import {
     getEmitFlags,
     getEnclosingBlockScopeContainer,
     getFirstConstructorWithBody,
+    getInternalEmitFlags,
     getNameOfDeclaration,
     getOriginalNode,
     getParseTreeNode,
@@ -79,6 +80,7 @@ import {
     insertStatementAfterCustomPrologue,
     insertStatementsAfterCustomPrologue,
     insertStatementsAfterStandardPrologue,
+    InternalEmitFlags,
     isArrayLiteralExpression,
     isArrowFunction,
     isAssignmentExpression,
@@ -579,7 +581,7 @@ export function transformES2015(context: TransformationContext): (x: SourceFile
             || convertedLoopState !== undefined
             || (hierarchyFacts & HierarchyFacts.ConstructorWithCapturedSuper && isOrMayContainReturnCompletion(node))
             || (isIterationStatement(node, /*lookInLabeledStatements*/ false) && shouldConvertIterationStatement(node))
-            || (getEmitFlags(node) & EmitFlags.TypeScriptClassWrapper) !== 0;
+            || (getInternalEmitFlags(node) & InternalEmitFlags.TypeScriptClassWrapper) !== 0;
     }
 
     function visitor(node: Node): VisitResult<Node | undefined> {
@@ -2351,7 +2353,7 @@ export function transformES2015(context: TransformationContext): (x: SourceFile
     function isVariableStatementOfTypeScriptClassWrapper(node: VariableStatement) {
         return node.declarationList.declarations.length === 1
             && !!node.declarationList.declarations[0].initializer
-            && !!(getEmitFlags(node.declarationList.declarations[0].initializer) & EmitFlags.TypeScriptClassWrapper);
+            && !!(getInternalEmitFlags(node.declarationList.declarations[0].initializer) & InternalEmitFlags.TypeScriptClassWrapper);
     }
 
     function visitVariableStatement(node: VariableStatement): Statement | undefined {
@@ -3923,7 +3925,7 @@ export function transformES2015(context: TransformationContext): (x: SourceFile
      * @param node a CallExpression.
      */
     function visitCallExpression(node: CallExpression) {
-        if (getEmitFlags(node) & EmitFlags.TypeScriptClassWrapper) {
+        if (getInternalEmitFlags(node) & InternalEmitFlags.TypeScriptClassWrapper) {
             return visitTypeScriptClassWrapper(node);
         }
 
@@ -4065,8 +4067,21 @@ export function transformES2015(context: TransformationContext): (x: SourceFile
             addRange(statements, funcStatements, classBodyEnd + 1);
         }
 
-        // Add the remaining statements of the outer wrapper.
-        addRange(statements, remainingStatements);
+        // TODO(rbuckton): We should consider either improving the inlining here, or remove it entirely, since
+        //                 the new esDecorators emit doesn't inline.
+
+        // Add the remaining statements of the outer wrapper. Use the 'return' statement
+        // of the inner wrapper if its expression is not trivially an Identifier.
+        const returnStatement = tryCast(elementAt(funcStatements, classBodyEnd), isReturnStatement);
+        for (const statement of remainingStatements) {
+            if (isReturnStatement(statement) && returnStatement?.expression &&
+                !isIdentifier(returnStatement.expression)) {
+                statements.push(returnStatement);
+            }
+            else {
+                statements.push(statement);
+            }
+        }
 
         // The 'es2015' class transform may add an end-of-declaration marker. If so we will add it
         // after the remaining statements from the 'ts' transformer.
diff --git a/src/compiler/transformers/esDecorators.ts b/src/compiler/transformers/esDecorators.ts
new file mode 100644
index 0000000000000..d0614bf9f907d
--- /dev/null
+++ b/src/compiler/transformers/esDecorators.ts
@@ -0,0 +1,2315 @@
+import {
+    addEmitHelpers,
+    addInternalEmitFlags,
+    addRange,
+    AllDecorators,
+    AnonymousFunctionDefinition,
+    append,
+    ArrayAssignmentElement,
+    AssignmentPattern,
+    AsteriskToken,
+    BinaryExpression,
+    BindingElement,
+    Block,
+    Bundle,
+    CallExpression,
+    chainBundle,
+    childIsDecorated,
+    ClassDeclaration,
+    ClassElement,
+    ClassExpression,
+    ClassLikeDeclaration,
+    classOrConstructorParameterIsDecorated,
+    ClassStaticBlockDeclaration,
+    CommaListExpression,
+    ComputedPropertyName,
+    ConstructorDeclaration,
+    createAccessorPropertyBackingField,
+    Debug,
+    Decorator,
+    ElementAccessExpression,
+    EmitFlags,
+    ESDecorateClassElementContext,
+    ESDecorateName,
+    expandPreOrPostfixIncrementOrDecrementExpression,
+    ExportAssignment,
+    Expression,
+    ExpressionStatement,
+    findComputedPropertyNameCacheAssignment,
+    firstOrUndefined,
+    forEachEntry,
+    ForStatement,
+    GeneratedIdentifierFlags,
+    GetAccessorDeclaration,
+    getAllDecoratorsOfClass,
+    getAllDecoratorsOfClassElement,
+    getCommentRange,
+    getEffectiveBaseTypeNode,
+    getFirstConstructorWithBody,
+    getHeritageClause,
+    getNonAssignmentOperatorForCompoundAssignment,
+    getOrCreateEmitNode,
+    getOriginalNode,
+    getSourceMapRange,
+    hasAccessorModifier,
+    hasDecorators,
+    hasStaticModifier,
+    hasSyntacticModifier,
+    HeritageClause,
+    Identifier,
+    idText,
+    InternalEmitFlags,
+    isAmbientPropertyDeclaration,
+    isArrayBindingOrAssignmentElement,
+    isArrayLiteralExpression,
+    isArrowFunction,
+    isAssignmentExpression,
+    isAsyncModifier,
+    isAutoAccessorPropertyDeclaration,
+    isBindingName,
+    isBlock,
+    isClassElement,
+    isClassExpression,
+    isClassLike,
+    isClassStaticBlockDeclaration,
+    isCompoundAssignment,
+    isComputedPropertyName,
+    isDestructuringAssignment,
+    isElementAccessExpression,
+    isEmptyStringLiteral,
+    isExpression,
+    isForInitializer,
+    isFunctionExpression,
+    isGeneratedIdentifier,
+    isGetAccessor,
+    isGetAccessorDeclaration,
+    isHeritageClause,
+    isIdentifier,
+    isIdentifierText,
+    isLeftHandSideExpression,
+    isMethodDeclaration,
+    isMethodOrAccessor,
+    isModifier,
+    isNamedClassElement,
+    isNamedEvaluation,
+    isObjectBindingOrAssignmentElement,
+    isObjectLiteralElementLike,
+    isObjectLiteralExpression,
+    isOmittedExpression,
+    isParameter,
+    isParenthesizedExpression,
+    isPrivateIdentifier,
+    isPrivateIdentifierClassElementDeclaration,
+    isPropertyAssignment,
+    isPropertyDeclaration,
+    isPropertyName,
+    isPropertyNameLiteral,
+    isSetAccessor,
+    isSetAccessorDeclaration,
+    isShorthandPropertyAssignment,
+    isSimpleInlineableExpression,
+    isSpreadAssignment,
+    isSpreadElement,
+    isStatement,
+    isStatic,
+    isStaticModifier,
+    isStringLiteral,
+    isSuperProperty,
+    isTemplateLiteral,
+    LeftHandSideExpression,
+    map,
+    MethodDeclaration,
+    Modifier,
+    ModifierFlags,
+    ModifierLike,
+    ModifiersArray,
+    moveRangePastDecorators,
+    moveRangePastModifiers,
+    Node,
+    NodeArray,
+    NodeFlags,
+    nodeOrChildIsDecorated,
+    ObjectLiteralElement,
+    OmittedExpression,
+    ParameterDeclaration,
+    ParenthesizedExpression,
+    PartiallyEmittedExpression,
+    PostfixUnaryExpression,
+    PrefixUnaryExpression,
+    PrivateIdentifier,
+    PrivateIdentifierGetAccessorDeclaration,
+    PrivateIdentifierMethodDeclaration,
+    PrivateIdentifierPropertyDeclaration,
+    PrivateIdentifierSetAccessorDeclaration,
+    PropertyAccessExpression,
+    PropertyAssignment,
+    PropertyDeclaration,
+    PropertyName,
+    ScriptTarget,
+    SetAccessorDeclaration,
+    setCommentRange,
+    setEmitFlags,
+    setInternalEmitFlags,
+    setOriginalNode,
+    setSourceMapRange,
+    setTextRange,
+    ShorthandPropertyAssignment,
+    skipOuterExpressions,
+    skipParentheses,
+    some,
+    SourceFile,
+    SpreadAssignment,
+    SpreadElement,
+    Statement,
+    SyntaxKind,
+    TaggedTemplateExpression,
+    ThisExpression,
+    TransformationContext,
+    TransformFlags,
+    tryCast,
+    VariableDeclaration,
+    visitCommaListElements,
+    visitEachChild,
+    visitIterationBody,
+    visitNode,
+    visitNodes,
+    Visitor,
+    VisitResult,
+} from "../_namespaces/ts";
+
+// Class/Decorator evaluation order, as it pertains to this transformer:
+//
+// 1. Class decorators are evaluated outside of the private name scope of the class.
+//    - 15.8.20 RS: BindingClassDeclarationEvaluation
+//    - 15.8.21 RS: Evaluation
+//    - 8.3.5 RS: NamedEvaluation
+// 2. ClassHeritage clause is evaluated outside of the private name scope of the class.
+//    - 15.8.19 RS: ClassDefinitionEvaluation, Step 8.c.
+// 3. The name of the class is assigned.
+// 4. For each member:
+//    a. Member Decorators are evaluated.
+//       - 15.8.19 RS: ClassDefinitionEvaluation, Step 23.
+//       - Probably 15.7.13 RS: ClassElementEvaluation, but it's missing from spec text.
+//    b. Computed Property name is evaluated
+//       - 15.8.19 RS: ClassDefinitionEvaluation, Step 23.
+//       - 15.8.15 RS: ClassFieldDefinitionEvaluation, Step 1.
+//       - 15.4.5 RS: MethodDefinitionEvaluation, Step 1.
+// 5. Static non-field (method/getter/setter/auto-accessor) element decorators are applied
+// 6. Non-static non-field (method/getter/setter/auto-accessor) element decorators are applied
+// 7. Static field (excl. auto-accessor) element decorators are applied
+// 8. Non-static field (excl. auto-accessor) element decorators are applied
+// 9. Class decorators are applied
+// 10. Class binding is initialized
+// 11. Static extra initializers are evaluated
+// 12. Static fields are initialized and static blocks are evaluated
+// 13. Class extra initializers are evaluated
+
+interface MemberInfo {
+    memberDecoratorsName: Identifier; // used in step 4.a
+    memberInitializersName?: Identifier; // used in step 12 and construction
+    memberDescriptorName?: Identifier;
+}
+
+interface ClassInfo {
+    class: ClassLikeDeclaration;
+
+    classDecoratorsName?: Identifier; // used in step 2
+    classDescriptorName?: Identifier; // used in step 10
+    classExtraInitializersName?: Identifier; // used in step 13
+    classThis?: Identifier; // `_classThis`, if needed.
+    classSuper?: Identifier; // `_classSuper`, if needed.
+
+    memberInfos?: Map<ClassElement, MemberInfo>; // used in step 4.a, 12, and construction
+
+    instanceExtraInitializersName: Identifier | undefined; // used in construction
+    staticExtraInitializersName: Identifier | undefined; // used in step 11
+
+    staticNonFieldDecorationStatements?: Statement[];
+    nonStaticNonFieldDecorationStatements?: Statement[];
+    staticFieldDecorationStatements?: Statement[];
+    nonStaticFieldDecorationStatements?: Statement[];
+
+    hasStaticInitializers: boolean;
+    hasNonAmbientInstanceFields: boolean;
+    hasInjectedInstanceInitializers?: boolean;
+    hasStaticPrivateClassElements: boolean;
+}
+
+interface ClassLexicalEnvironmentStackEntry {
+    kind: "class";
+    next: LexicalEnvironmentStackEntry | undefined;
+    classInfo: ClassInfo | undefined;
+    savedPendingExpressions?: Expression[];
+}
+
+interface ClassElementLexicalEnvironmentStackEntry {
+    kind: "class-element";
+    next: ClassLexicalEnvironmentStackEntry;
+    classThis?: Identifier;
+    classSuper?: Identifier;
+}
+
+interface PropertyNameLexicalEnvironmentStackEntry {
+    kind: "name";
+    next: ClassElementLexicalEnvironmentStackEntry;
+}
+
+interface OtherLexicalEnvironmentStackEntry {
+    kind: "other";
+    next: LexicalEnvironmentStackEntry | undefined;
+    depth: number;
+    savedPendingExpressions?: Expression[];
+}
+
+type LexicalEnvironmentStackEntry =
+    | ClassLexicalEnvironmentStackEntry
+    | ClassElementLexicalEnvironmentStackEntry
+    | OtherLexicalEnvironmentStackEntry
+    | PropertyNameLexicalEnvironmentStackEntry
+    ;
+
+/** @internal */
+export function transformESDecorators(context: TransformationContext): (x: SourceFile | Bundle) => SourceFile | Bundle {
+    const {
+        factory,
+        getEmitHelperFactory: emitHelpers,
+        startLexicalEnvironment,
+        endLexicalEnvironment,
+        hoistVariableDeclaration,
+    } = context;
+
+    let top: LexicalEnvironmentStackEntry | undefined;
+    let classInfo: ClassInfo | undefined;
+    let classThis: Identifier | undefined;
+    let classSuper: Identifier | undefined;
+    let pendingExpressions: Expression[] | undefined;
+    let shouldTransformPrivateStaticElementsInFile: boolean;
+
+    return chainBundle(context, transformSourceFile);
+
+    function transformSourceFile(node: SourceFile) {
+        top = undefined;
+        shouldTransformPrivateStaticElementsInFile = false;
+        const visited = visitEachChild(node, visitor, context);
+        addEmitHelpers(visited, context.readEmitHelpers());
+        if (shouldTransformPrivateStaticElementsInFile) {
+            addInternalEmitFlags(visited, InternalEmitFlags.TransformPrivateStaticElements);
+            shouldTransformPrivateStaticElementsInFile = false;
+        }
+        return visited;
+    }
+
+    function updateState() {
+        classInfo = undefined;
+        classThis = undefined;
+        classSuper = undefined;
+        switch (top?.kind) {
+            case "class":
+                classInfo = top.classInfo;
+                break;
+            case "class-element":
+                classInfo = top.next.classInfo;
+                classThis = top.classThis;
+                classSuper = top.classSuper;
+                break;
+            case "name":
+                const grandparent = top.next.next.next;
+                if (grandparent?.kind === "class-element") {
+                    classInfo = grandparent.next.classInfo;
+                    classThis = grandparent.classThis;
+                    classSuper = grandparent.classSuper;
+                }
+                break;
+        }
+    }
+
+    function enterClass(classInfo: ClassInfo | undefined) {
+        top = { kind: "class", next: top, classInfo, savedPendingExpressions: pendingExpressions };
+        pendingExpressions = undefined;
+        updateState();
+    }
+
+    function exitClass() {
+        Debug.assert(top?.kind === "class", "Incorrect value for top.kind.", () => `Expected top.kind to be 'class' but got '${top?.kind}' instead.`);
+        pendingExpressions = top.savedPendingExpressions;
+        top = top.next;
+        updateState();
+    }
+
+    function enterClassElement(node: ClassElement) {
+        Debug.assert(top?.kind === "class", "Incorrect value for top.kind.", () => `Expected top.kind to be 'class' but got '${top?.kind}' instead.`);
+        top = { kind: "class-element", next: top };
+        if (isClassStaticBlockDeclaration(node) || isPropertyDeclaration(node) && hasStaticModifier(node)) {
+            top.classThis = top.next.classInfo?.classThis;
+            top.classSuper = top.next.classInfo?.classSuper;
+        }
+        updateState();
+    }
+
+    function exitClassElement() {
+        Debug.assert(top?.kind === "class-element", "Incorrect value for top.kind.", () => `Expected top.kind to be 'class-element' but got '${top?.kind}' instead.`);
+        Debug.assert(top.next?.kind === "class", "Incorrect value for top.next.kind.", () => `Expected top.next.kind to be 'class' but got '${top!.next?.kind}' instead.`);
+        top = top.next;
+        updateState();
+    }
+
+    function enterName() {
+        Debug.assert(top?.kind === "class-element", "Incorrect value for top.kind.", () => `Expected top.kind to be 'class-element' but got '${top?.kind}' instead.`);
+        top = { kind: "name", next: top };
+        updateState();
+    }
+
+    function exitName() {
+        Debug.assert(top?.kind === "name", "Incorrect value for top.kind.", () => `Expected top.kind to be 'name' but got '${top?.kind}' instead.`);
+        top = top.next;
+        updateState();
+    }
+
+    function enterOther() {
+        if (top?.kind === "other") {
+            Debug.assert(!pendingExpressions);
+            top.depth++;
+        }
+        else {
+            top = { kind: "other", next: top, depth: 0, savedPendingExpressions: pendingExpressions };
+            pendingExpressions = undefined;
+            updateState();
+        }
+    }
+
+    function exitOther() {
+        Debug.assert(top?.kind === "other", "Incorrect value for top.kind.", () => `Expected top.kind to be 'other' but got '${top?.kind}' instead.`);
+        if (top.depth > 0) {
+            Debug.assert(!pendingExpressions);
+            top.depth--;
+        }
+        else {
+            pendingExpressions = top.savedPendingExpressions;
+            top = top.next;
+            updateState();
+        }
+    }
+
+    function shouldVisitNode(node: Node) {
+        return !!(node.transformFlags & TransformFlags.ContainsDecorators)
+            || !!classThis && !!(node.transformFlags & TransformFlags.ContainsLexicalThis)
+            || !!classThis && !!classSuper && !!(node.transformFlags & TransformFlags.ContainsLexicalSuper);
+    }
+
+    function visitor(node: Node): VisitResult<Node> {
+        if (!shouldVisitNode(node)) {
+            return node;
+        }
+
+        switch (node.kind) {
+            case SyntaxKind.Decorator: // elided, will be emitted as part of `visitClassDeclaration`
+                return Debug.fail("Use `modifierVisitor` instead.");
+            case SyntaxKind.ClassDeclaration:
+                return visitClassDeclaration(node as ClassDeclaration);
+            case SyntaxKind.ClassExpression:
+                return visitClassExpression(node as ClassExpression, /*referencedName*/ undefined);
+            case SyntaxKind.Constructor:
+            case SyntaxKind.PropertyDeclaration:
+            case SyntaxKind.ClassStaticBlockDeclaration:
+                return Debug.fail("Not supported outside of a class. Use 'classElementVisitor' instead.");
+            case SyntaxKind.Parameter:
+                return visitParameterDeclaration(node as ParameterDeclaration);
+
+            // Support NamedEvaluation to ensure the correct class name for class expressions.
+            case SyntaxKind.BinaryExpression:
+                return visitBinaryExpression(node as BinaryExpression, /*discarded*/ false);
+            case SyntaxKind.PropertyAssignment:
+                return visitPropertyAssignment(node as PropertyAssignment);
+            case SyntaxKind.VariableDeclaration:
+                return visitVariableDeclaration(node as VariableDeclaration);
+            case SyntaxKind.BindingElement:
+                return visitBindingElement(node as BindingElement);
+            case SyntaxKind.ExportAssignment:
+                return visitExportAssignment(node as ExportAssignment);
+            case SyntaxKind.ThisKeyword:
+                return visitThisExpression(node as ThisExpression);
+            case SyntaxKind.ForStatement:
+                return visitForStatement(node as ForStatement);
+            case SyntaxKind.ExpressionStatement:
+                return visitExpressionStatement(node as ExpressionStatement);
+            case SyntaxKind.CommaListExpression:
+                return visitCommaListExpression(node as CommaListExpression, /*discarded*/ false);
+            case SyntaxKind.ParenthesizedExpression:
+                return visitParenthesizedExpression(node as ParenthesizedExpression, /*discarded*/ false, /*referencedName*/ undefined);
+            case SyntaxKind.PartiallyEmittedExpression:
+                return visitPartiallyEmittedExpression(node as PartiallyEmittedExpression, /*discarded*/ false, /*referencedName*/ undefined);
+            case SyntaxKind.CallExpression:
+                return visitCallExpression(node as CallExpression);
+            case SyntaxKind.TaggedTemplateExpression:
+                return visitTaggedTemplateExpression(node as TaggedTemplateExpression);
+            case SyntaxKind.PrefixUnaryExpression:
+            case SyntaxKind.PostfixUnaryExpression:
+                return visitPreOrPostfixUnaryExpression(node as PrefixUnaryExpression | PostfixUnaryExpression, /*discard*/ false);
+            case SyntaxKind.PropertyAccessExpression:
+                return visitPropertyAccessExpression(node as PropertyAccessExpression);
+            case SyntaxKind.ElementAccessExpression:
+                return visitElementAccessExpression(node as ElementAccessExpression);
+            case SyntaxKind.ComputedPropertyName:
+                return visitComputedPropertyName(node as ComputedPropertyName);
+
+            case SyntaxKind.MethodDeclaration: // object literal methods and accessors
+            case SyntaxKind.SetAccessor:
+            case SyntaxKind.GetAccessor:
+            case SyntaxKind.FunctionExpression:
+            case SyntaxKind.FunctionDeclaration: {
+                enterOther();
+                const result = visitEachChild(node, fallbackVisitor, context);
+                exitOther();
+                return result;
+            }
+
+            default:
+                return visitEachChild(node, fallbackVisitor, context);
+        }
+    }
+
+    function fallbackVisitor(node: Node): VisitResult<Node | undefined> {
+        switch (node.kind) {
+            case SyntaxKind.Decorator:
+                return undefined;
+            default:
+                return visitor(node);
+        }
+    }
+
+    function modifierVisitor(node: ModifierLike): VisitResult<Modifier | undefined> {
+        switch (node.kind) {
+            case SyntaxKind.Decorator: // elided, will be emitted as part of `visitClassDeclaration`
+                return undefined;
+            default:
+                return node;
+        }
+    }
+
+    function classElementVisitor(node: Node) {
+        switch (node.kind) {
+            case SyntaxKind.Constructor:
+                return visitConstructorDeclaration(node as ConstructorDeclaration);
+            case SyntaxKind.MethodDeclaration:
+                return visitMethodDeclaration(node as MethodDeclaration);
+            case SyntaxKind.GetAccessor:
+                return visitGetAccessorDeclaration(node as GetAccessorDeclaration);
+            case SyntaxKind.SetAccessor:
+                return visitSetAccessorDeclaration(node as SetAccessorDeclaration);
+            case SyntaxKind.PropertyDeclaration:
+                return visitPropertyDeclaration(node as PropertyDeclaration);
+            case SyntaxKind.ClassStaticBlockDeclaration:
+                return visitClassStaticBlockDeclaration(node as ClassStaticBlockDeclaration);
+            default:
+                return visitor(node);
+        }
+    }
+
+    function namedEvaluationVisitor(node: Node, referencedName: Expression): VisitResult<Node> {
+        switch (node.kind) {
+            case SyntaxKind.PartiallyEmittedExpression:
+                return visitPartiallyEmittedExpression(node as PartiallyEmittedExpression, /*discarded*/ false, referencedName);
+            case SyntaxKind.ParenthesizedExpression:
+                return visitParenthesizedExpression(node as ParenthesizedExpression, /*discarded*/ false, referencedName);
+            case SyntaxKind.ClassExpression:
+                return visitClassExpression(node as ClassExpression, referencedName);
+            default:
+                return visitor(node);
+        }
+    }
+
+    function discardedValueVisitor(node: Node): VisitResult<Node> {
+        switch (node.kind) {
+            case SyntaxKind.PrefixUnaryExpression:
+            case SyntaxKind.PostfixUnaryExpression:
+                return visitPreOrPostfixUnaryExpression(node as PrefixUnaryExpression | PostfixUnaryExpression, /*discarded*/ true);
+            case SyntaxKind.BinaryExpression:
+                return visitBinaryExpression(node as BinaryExpression, /*discarded*/ true);
+            case SyntaxKind.CommaListExpression:
+                return visitCommaListExpression(node as CommaListExpression, /*discarded*/ true);
+            case SyntaxKind.ParenthesizedExpression:
+                return visitParenthesizedExpression(node as ParenthesizedExpression, /*discarded*/ true, /*referencedName*/ undefined);
+            default:
+                return visitor(node);
+        }
+    }
+
+    function getHelperVariableName(node: ClassLikeDeclaration | ClassElement) {
+        let declarationName =
+            node.name && isIdentifier(node.name) && !isGeneratedIdentifier(node.name) ? idText(node.name) :
+            node.name && isPrivateIdentifier(node.name) && !isGeneratedIdentifier(node.name) ? idText(node.name).slice(1) :
+            node.name && isStringLiteral(node.name) && isIdentifierText(node.name.text, ScriptTarget.ESNext) ? node.name.text :
+            isClassLike(node) ? "class" : "member";
+        if (isGetAccessor(node)) declarationName = `get_${declarationName}`;
+        if (isSetAccessor(node)) declarationName = `set_${declarationName}`;
+        if (node.name && isPrivateIdentifier(node.name)) declarationName = `private_${declarationName}`;
+        if (isStatic(node)) declarationName = `static_${declarationName}`;
+        return "_" + declarationName;
+    }
+
+    function createHelperVariable(node: ClassLikeDeclaration | ClassElement, suffix: string) {
+        return factory.createUniqueName(`${getHelperVariableName(node)}_${suffix}`, GeneratedIdentifierFlags.Optimistic | GeneratedIdentifierFlags.ReservedInNestedScopes);
+    }
+
+    function createLet(name: Identifier, initializer?: Expression) {
+        return factory.createVariableStatement(
+            /*modifiers*/ undefined,
+            factory.createVariableDeclarationList([
+                factory.createVariableDeclaration(
+                    name,
+                    /*exclamationToken*/ undefined,
+                    /*type*/ undefined,
+                    initializer
+                ),
+            ], NodeFlags.Let)
+        );
+    }
+
+    function createClassInfo(node: ClassLikeDeclaration): ClassInfo {
+        let instanceExtraInitializersName: Identifier | undefined;
+        let staticExtraInitializersName: Identifier | undefined;
+        let hasStaticInitializers = false;
+        let hasNonAmbientInstanceFields = false;
+        let hasStaticPrivateClassElements = false;
+
+        // Before visiting we perform a first pass to collect information we'll need
+        // as we descend.
+
+        for (const member of node.members) {
+            if (isNamedClassElement(member) && nodeOrChildIsDecorated(/*legacyDecorators*/ false, member, node)) {
+                if (hasStaticModifier(member)) {
+                    staticExtraInitializersName ??= factory.createUniqueName("_staticExtraInitializers", GeneratedIdentifierFlags.Optimistic);
+                }
+                else {
+                    instanceExtraInitializersName ??= factory.createUniqueName("_instanceExtraInitializers", GeneratedIdentifierFlags.Optimistic);
+                }
+            }
+            if (isClassStaticBlockDeclaration(member)) {
+                hasStaticInitializers = true;
+            }
+            else if (isPropertyDeclaration(member)) {
+                if (hasStaticModifier(member)) {
+                    hasStaticInitializers ||= (!!member.initializer || hasDecorators(member));
+                }
+                else {
+                    hasNonAmbientInstanceFields ||= !isAmbientPropertyDeclaration(member);
+                }
+            }
+
+            if ((isPrivateIdentifierClassElementDeclaration(member) || isAutoAccessorPropertyDeclaration(member)) && hasStaticModifier(member)) {
+                hasStaticPrivateClassElements = true;
+            }
+
+            // exit early if possible
+            if (staticExtraInitializersName &&
+                instanceExtraInitializersName &&
+                hasStaticInitializers &&
+                hasNonAmbientInstanceFields &&
+                hasStaticPrivateClassElements) {
+                break;
+            }
+        }
+
+        return {
+            class: node,
+            instanceExtraInitializersName,
+            staticExtraInitializersName,
+            hasStaticInitializers,
+            hasNonAmbientInstanceFields,
+            hasStaticPrivateClassElements,
+        };
+    }
+
+    function containsLexicalSuperInStaticInitializer(node: ClassLikeDeclaration) {
+        for (const member of node.members) {
+            if (isClassStaticBlockDeclaration(member) ||
+                isPropertyDeclaration(member) && hasStaticModifier(member)) {
+                if (member.transformFlags & TransformFlags.ContainsLexicalSuper) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    function transformClassLike(node: ClassLikeDeclaration, className: Expression) {
+        startLexicalEnvironment();
+
+        const classReference = node.name ?? factory.getGeneratedNameForNode(node);
+        const classInfo = createClassInfo(node);
+        const classDefinitionStatements: Statement[] = [];
+        let leadingBlockStatements: Statement[] | undefined;
+        let trailingBlockStatements: Statement[] | undefined;
+        let syntheticConstructor: ConstructorDeclaration | undefined;
+        let heritageClauses: NodeArray<HeritageClause> | undefined;
+        let shouldTransformPrivateStaticElementsInClass = false;
+
+        // 1. Class decorators are evaluated outside of the private name scope of the class.
+        const classDecorators = transformAllDecoratorsOfDeclaration(getAllDecoratorsOfClass(node));
+        if (classDecorators) {
+            // - Since class decorators don't have privileged access to private names defined inside the class,
+            //   they must be evaluated outside of the class body.
+            // - Since a class decorator can replace the class constructor, we must define a variable to keep track
+            //   of the mutated class.
+            // - Since a class decorator can add extra initializers, we must define a variable to keep track of
+            //   extra initializers.
+            classInfo.classDecoratorsName = factory.createUniqueName("_classDecorators", GeneratedIdentifierFlags.Optimistic);
+            classInfo.classDescriptorName = factory.createUniqueName("_classDescriptor", GeneratedIdentifierFlags.Optimistic);
+            classInfo.classExtraInitializersName = factory.createUniqueName("_classExtraInitializers", GeneratedIdentifierFlags.Optimistic);
+            classInfo.classThis = factory.createUniqueName("_classThis", GeneratedIdentifierFlags.Optimistic);
+            classDefinitionStatements.push(
+                createLet(classInfo.classDecoratorsName, factory.createArrayLiteralExpression(classDecorators)),
+                createLet(classInfo.classDescriptorName),
+                createLet(classInfo.classExtraInitializersName, factory.createArrayLiteralExpression()),
+                createLet(classInfo.classThis),
+            );
+
+            if (classInfo.hasStaticPrivateClassElements) {
+                shouldTransformPrivateStaticElementsInClass = true;
+                shouldTransformPrivateStaticElementsInFile = true;
+            }
+        }
+
+        // Rewrite `super` in static initializers so that we can use the correct `this`.
+        if (classDecorators && containsLexicalSuperInStaticInitializer(node)) {
+            const extendsClause = getHeritageClause(node.heritageClauses, SyntaxKind.ExtendsKeyword);
+            const extendsElement = extendsClause && firstOrUndefined(extendsClause.types);
+            const extendsExpression = extendsElement && visitNode(extendsElement.expression, visitor, isExpression);
+            if (extendsExpression) {
+                classInfo.classSuper = factory.createUniqueName("_classSuper", GeneratedIdentifierFlags.Optimistic);
+
+                // Ensure we do not give the class or function an assigned name due to the variable by prefixing it
+                // with `0, `.
+                const unwrapped = skipOuterExpressions(extendsExpression);
+                const safeExtendsExpression =
+                    isClassExpression(unwrapped) && !unwrapped.name ||
+                    isFunctionExpression(unwrapped) && !unwrapped.name ||
+                    isArrowFunction(unwrapped) ?
+                        factory.createComma(factory.createNumericLiteral(0), extendsExpression) :
+                        extendsExpression;
+                classDefinitionStatements.push(createLet(classInfo.classSuper, safeExtendsExpression));
+                const updatedExtendsElement = factory.updateExpressionWithTypeArguments(extendsElement, classInfo.classSuper, /*typeArguments*/ undefined);
+                const updatedExtendsClause = factory.updateHeritageClause(extendsClause, [updatedExtendsElement]);
+                heritageClauses = factory.createNodeArray([updatedExtendsClause]);
+            }
+        }
+        else {
+            // 2. ClassHeritage clause is evaluated outside of the private name scope of the class.
+            heritageClauses = visitNodes(node.heritageClauses, visitor, isHeritageClause);
+        }
+
+        const renamedClassThis = classInfo.classThis ?? factory.createThis();
+
+        // 3. The name of the class is assigned.
+        //
+        // If the class did not have a name, set the assigned name as if from NamedEvaluation.
+        // We don't need to use the assigned name if it consists of the empty string and the transformed class
+        // expression won't get its name from any other source (such as the variable we create to handle
+        // class decorators)
+        const needsSetNameHelper = !getOriginalNode(node, isClassLike)?.name && (classDecorators || !isStringLiteral(className) || !isEmptyStringLiteral(className));
+        if (needsSetNameHelper) {
+            const setNameExpr = emitHelpers().createSetFunctionNameHelper(factory.createThis(), className);
+            leadingBlockStatements = append(leadingBlockStatements, factory.createExpressionStatement(setNameExpr));
+        }
+
+        // 4. For each member:
+        //    a. Member Decorators are evaluated
+        //    b. Computed Property Name is evaluated, if present
+
+        // We visit members in two passes:
+        // - The first pass visits methods, accessors, and fields to collect decorators and computed property names.
+        // - The second pass visits the constructor to add instance initializers.
+        //
+        // NOTE: If there are no constructors, but there are instance initializers, a synthetic constructor is added.
+
+        enterClass(classInfo);
+        let members = visitNodes(node.members, classElementVisitor, isClassElement);
+        if (pendingExpressions) {
+            let outerThis: Identifier | undefined;
+            for (let expression of pendingExpressions) {
+                // If a pending expression contains a lexical `this`, we'll need to capture the lexical `this` of the
+                // container and transform it in the expression. This ensures we use the correct `this` in the resulting
+                // class `static` block. We don't use substitution here because the size of the tree we are visiting
+                // is likely to be small and doesn't justify the complexity of introducing substitution.
+                expression = visitNode(expression, function thisVisitor(node: Node): Node {
+                    if (!(node.transformFlags & TransformFlags.ContainsLexicalThis)) {
+                        return node;
+                    }
+
+                    switch (node.kind) {
+                        case SyntaxKind.ThisKeyword:
+                            if (!outerThis) {
+                                outerThis = factory.createUniqueName("_outerThis", GeneratedIdentifierFlags.Optimistic);
+                                classDefinitionStatements.unshift(createLet(outerThis, factory.createThis()));
+                            }
+                            return outerThis;
+
+                        default:
+                            return visitEachChild(node, thisVisitor, context);
+                    }
+                }, isExpression);
+
+                const statement = factory.createExpressionStatement(expression);
+                leadingBlockStatements = append(leadingBlockStatements, statement);
+            }
+            pendingExpressions = undefined;
+        }
+        exitClass();
+
+        if (classInfo.instanceExtraInitializersName && !getFirstConstructorWithBody(node)) {
+            const initializerStatements = prepareConstructor(node, classInfo);
+            if (initializerStatements) {
+                const extendsClauseElement = getEffectiveBaseTypeNode(node);
+                const isDerivedClass = !!(extendsClauseElement && skipOuterExpressions(extendsClauseElement.expression).kind !== SyntaxKind.NullKeyword);
+                const constructorStatements: Statement[] = [];
+                if (isDerivedClass) {
+                    const spreadArguments = factory.createSpreadElement(factory.createIdentifier("arguments"));
+                    const superCall = factory.createCallExpression(factory.createSuper(), /*typeArguments*/ undefined, [spreadArguments]);
+                    constructorStatements.push(factory.createExpressionStatement(superCall));
+                }
+
+                addRange(constructorStatements, initializerStatements);
+
+                const constructorBody = factory.createBlock(constructorStatements, /*multiLine*/ true);
+                syntheticConstructor = factory.createConstructorDeclaration(/*modifiers*/ undefined, [], constructorBody);
+            }
+        }
+
+        // Used in steps 5, 7, and 11
+        if (classInfo.staticExtraInitializersName) {
+            classDefinitionStatements.push(
+                createLet(classInfo.staticExtraInitializersName, factory.createArrayLiteralExpression())
+            );
+        }
+
+        // Used in steps 6, 8, and during construction
+        if (classInfo.instanceExtraInitializersName) {
+            classDefinitionStatements.push(
+                createLet(classInfo.instanceExtraInitializersName, factory.createArrayLiteralExpression())
+            );
+        }
+
+        // Used in steps 7, 8, 12, and construction
+        if (classInfo.memberInfos) {
+            forEachEntry(classInfo.memberInfos, (memberInfo, member) => {
+                if (isStatic(member)) {
+                    classDefinitionStatements.push(createLet(memberInfo.memberDecoratorsName));
+                    if (memberInfo.memberInitializersName) {
+                        classDefinitionStatements.push(createLet(memberInfo.memberInitializersName, factory.createArrayLiteralExpression()));
+                    }
+                    if (memberInfo.memberDescriptorName) {
+                        classDefinitionStatements.push(createLet(memberInfo.memberDescriptorName));
+                    }
+                }
+            });
+        }
+
+        // Used in steps 7, 8, 12, and construction
+        if (classInfo.memberInfos) {
+            forEachEntry(classInfo.memberInfos, (memberInfo, member) => {
+                if (!isStatic(member)) {
+                    classDefinitionStatements.push(createLet(memberInfo.memberDecoratorsName));
+                    if (memberInfo.memberInitializersName) {
+                        classDefinitionStatements.push(createLet(memberInfo.memberInitializersName, factory.createArrayLiteralExpression()));
+                    }
+                    if (memberInfo.memberDescriptorName) {
+                        classDefinitionStatements.push(createLet(memberInfo.memberDescriptorName));
+                    }
+                }
+            });
+        }
+
+        // 5. Static non-field element decorators are applied
+        leadingBlockStatements = addRange(leadingBlockStatements, classInfo.staticNonFieldDecorationStatements);
+
+        // 6. Non-static non-field element decorators are applied
+        leadingBlockStatements = addRange(leadingBlockStatements, classInfo.nonStaticNonFieldDecorationStatements);
+
+        // 7. Static field element decorators are applied
+        leadingBlockStatements = addRange(leadingBlockStatements, classInfo.staticFieldDecorationStatements);
+
+        // 8. Non-static field element decorators are applied
+        leadingBlockStatements = addRange(leadingBlockStatements, classInfo.nonStaticFieldDecorationStatements);
+
+        // 9. Class decorators are applied
+        // 10. Class binding is initialized
+        if (classInfo.classDescriptorName && classInfo.classDecoratorsName && classInfo.classExtraInitializersName && classInfo.classThis) {
+            leadingBlockStatements ??= [];
+
+            //  __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, _classExtraInitializers);
+            const valueProperty = factory.createPropertyAssignment("value", factory.createThis());
+            const classDescriptor = factory.createObjectLiteralExpression([valueProperty]);
+            const classDescriptorAssignment = factory.createAssignment(classInfo.classDescriptorName, classDescriptor);
+            const classNameReference = factory.createPropertyAccessExpression(factory.createThis(), "name");
+            const esDecorateHelper = emitHelpers().createESDecorateHelper(
+                factory.createNull(),
+                classDescriptorAssignment,
+                classInfo.classDecoratorsName,
+                { kind: "class", name: classNameReference },
+                factory.createNull(),
+                classInfo.classExtraInitializersName
+            );
+            const esDecorateStatement = factory.createExpressionStatement(esDecorateHelper);
+            setSourceMapRange(esDecorateStatement, moveRangePastDecorators(node));
+            leadingBlockStatements.push(esDecorateStatement);
+
+            //  C = _classThis = _classDescriptor.value;
+            const classDescriptorValueReference = factory.createPropertyAccessExpression(classInfo.classDescriptorName, "value");
+            const classThisAssignment = factory.createAssignment(classInfo.classThis, classDescriptorValueReference);
+            const classReferenceAssignment = factory.createAssignment(classReference, classThisAssignment);
+            leadingBlockStatements.push(factory.createExpressionStatement(classReferenceAssignment));
+        }
+
+        // 11. Static extra initializers are evaluated
+        if (classInfo.staticExtraInitializersName) {
+            const runStaticInitializersHelper = emitHelpers().createRunInitializersHelper(renamedClassThis, classInfo.staticExtraInitializersName);
+            const runStaticInitializersStatement = factory.createExpressionStatement(runStaticInitializersHelper);
+            setSourceMapRange(runStaticInitializersStatement, node.name ?? moveRangePastDecorators(node));
+            leadingBlockStatements = append(leadingBlockStatements, runStaticInitializersStatement);
+        }
+
+        // 12. Static fields are initialized and static blocks are evaluated
+
+        // 13. Class extra initializers are evaluated
+        if (classInfo.classExtraInitializersName) {
+            const runClassInitializersHelper = emitHelpers().createRunInitializersHelper(renamedClassThis, classInfo.classExtraInitializersName);
+            const runClassInitializersStatement = factory.createExpressionStatement(runClassInitializersHelper);
+            setSourceMapRange(runClassInitializersStatement, node.name ?? moveRangePastDecorators(node));
+            trailingBlockStatements = append(trailingBlockStatements, runClassInitializersStatement);
+        }
+
+        // If there are no other static initializers to run, combine the leading and trailing block statements
+        if (leadingBlockStatements && trailingBlockStatements && !classInfo.hasStaticInitializers) {
+            addRange(leadingBlockStatements, trailingBlockStatements);
+            trailingBlockStatements = undefined;
+        }
+
+        let newMembers: readonly ClassElement[] = members;
+
+        // insert a leading `static {}` block, if necessary
+        if (leadingBlockStatements) {
+            //  class C {
+            //      static { ... }
+            //      ...
+            //  }
+            const leadingStaticBlockBody = factory.createBlock(leadingBlockStatements, /*multiline*/ true);
+            const leadingStaticBlock = factory.createClassStaticBlockDeclaration(leadingStaticBlockBody);
+            if (shouldTransformPrivateStaticElementsInClass) {
+                // We use `InternalEmitFlags.TransformPrivateStaticElements` as a marker on a class static block
+                // to inform the classFields transform that it shouldn't rename `this` to `_classThis` in the
+                // transformed class static block.
+                setInternalEmitFlags(leadingStaticBlock, InternalEmitFlags.TransformPrivateStaticElements);
+            }
+            newMembers = [leadingStaticBlock, ...newMembers];
+        }
+
+        // append the synthetic constructor, if necessary
+        if (syntheticConstructor) {
+            newMembers = [...newMembers, syntheticConstructor];
+        }
+
+        // append a trailing `static {}` block, if necessary
+        if (trailingBlockStatements) {
+            //  class C {
+            //      ...
+            //      static { ... }
+            //  }
+            const trailingStaticBlockBody = factory.createBlock(trailingBlockStatements, /*multiline*/ true);
+            const trailingStaticBlock = factory.createClassStaticBlockDeclaration(trailingStaticBlockBody);
+            newMembers = [...newMembers, trailingStaticBlock];
+        }
+
+        // Update members with newly added members.
+        if (newMembers !== members) {
+            members = setTextRange(factory.createNodeArray(newMembers), members);
+        }
+
+        const lexicalEnvironment = endLexicalEnvironment();
+        let classExpression: ClassExpression;
+        if (classDecorators) {
+            // We use `var` instead of `let` so we can leverage NamedEvaluation to define the class name
+            // and still be able to ensure it is initialized prior to any use in `static {}`.
+
+            //  (() => {
+            //      let _classDecorators = [...];
+            //      let _classDescriptor;
+            //      let _classExtraInitializers = [];
+            //      let _classThis;
+            //      ...
+            //      var C = class {
+            //          static {
+            //              __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, ...);
+            //              // `C` is initialized here
+            //              C = _classThis = _classDescriptor.value;
+            //          }
+            //          static x = 1;
+            //          static y = C.x; // `C` will already be defined here.
+            //          static { ... }
+            //      };
+            //      return C;
+            //  })();
+
+            classExpression = factory.createClassExpression(/*modifiers*/ undefined, /*name*/ undefined, /*typeParameters*/ undefined, heritageClauses, members);
+            const classReferenceDeclaration = factory.createVariableDeclaration(classReference, /*exclamationToken*/ undefined, /*type*/ undefined, classExpression);
+            const classReferenceVarDeclList = factory.createVariableDeclarationList([classReferenceDeclaration]);
+            const returnExpr = classInfo.classThis ? factory.createAssignment(classReference, classInfo.classThis) : classReference;
+            classDefinitionStatements.push(
+                factory.createVariableStatement(/*modifiers*/ undefined, classReferenceVarDeclList),
+                factory.createReturnStatement(returnExpr),
+            );
+        }
+        else {
+            //  return <classExpression>;
+            classExpression = factory.createClassExpression(/*modifiers*/ undefined, node.name, /*typeParameters*/ undefined, heritageClauses, members);
+            classDefinitionStatements.push(factory.createReturnStatement(classExpression));
+        }
+
+        if (shouldTransformPrivateStaticElementsInClass) {
+            addInternalEmitFlags(classExpression, InternalEmitFlags.TransformPrivateStaticElements);
+            for (const member of classExpression.members) {
+                if ((isPrivateIdentifierClassElementDeclaration(member) || isAutoAccessorPropertyDeclaration(member)) && hasStaticModifier(member)) {
+                    addInternalEmitFlags(member, InternalEmitFlags.TransformPrivateStaticElements);
+                }
+            }
+        }
+
+        setOriginalNode(classExpression, node);
+        getOrCreateEmitNode(classExpression).classThis = classInfo.classThis;
+        return factory.createImmediatelyInvokedArrowFunction(factory.mergeLexicalEnvironment(classDefinitionStatements, lexicalEnvironment));
+    }
+
+    function isDecoratedClassLike(node: ClassLikeDeclaration) {
+        return classOrConstructorParameterIsDecorated(/*legacyDecorators*/ false, node) ||
+            childIsDecorated(/*legacyDecorators*/ false, node);
+    }
+
+    function visitClassDeclaration(node: ClassDeclaration): VisitResult<Statement> {
+        if (isDecoratedClassLike(node)) {
+            if (hasSyntacticModifier(node, ModifierFlags.Export) &&
+                hasSyntacticModifier(node, ModifierFlags.Default)) {
+                //  export default (() => { ... })();
+                const originalClass = getOriginalNode(node, isClassLike) ?? node;
+                const className = originalClass.name ? factory.createStringLiteralFromNode(originalClass.name) : factory.createStringLiteral("default");
+                const iife = transformClassLike(node, className);
+                const statement = factory.createExportDefault(iife);
+                setOriginalNode(statement, node);
+                setCommentRange(statement, getCommentRange(node));
+                setSourceMapRange(statement, moveRangePastDecorators(node));
+                return statement;
+            }
+            else {
+                //  let C = (() => { ... })();
+                Debug.assertIsDefined(node.name, "A class declaration that is not a default export must have a name.");
+                const iife = transformClassLike(node, factory.createStringLiteralFromNode(node.name));
+                const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
+                const varDecl = factory.createVariableDeclaration(node.name, /*exclamationToken*/ undefined, /*type*/ undefined, iife);
+                const varDecls = factory.createVariableDeclarationList([varDecl], NodeFlags.Let);
+                const statement = factory.createVariableStatement(modifiers, varDecls);
+                setOriginalNode(statement, node);
+                setCommentRange(statement, getCommentRange(node));
+                return statement;
+            }
+        }
+        else {
+            const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
+            const heritageClauses = visitNodes(node.heritageClauses, visitor, isHeritageClause);
+            enterClass(/*classInfo*/ undefined);
+            const members = visitNodes(node.members, classElementVisitor, isClassElement);
+            exitClass();
+            return factory.updateClassDeclaration(node, modifiers, node.name, /*typeParameters*/ undefined, heritageClauses, members);
+        }
+    }
+
+    function visitClassExpression(node: ClassExpression, referencedName: Expression | undefined) {
+        if (isDecoratedClassLike(node)) {
+            const className = node.name ? factory.createStringLiteralFromNode(node.name) : referencedName ?? factory.createStringLiteral("");
+            const iife = transformClassLike(node, className);
+            setOriginalNode(iife, node);
+            return iife;
+        }
+        else {
+            const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
+            const heritageClauses = visitNodes(node.heritageClauses, visitor, isHeritageClause);
+            enterClass(/*classInfo*/ undefined);
+            const members = visitNodes(node.members, classElementVisitor, isClassElement);
+            exitClass();
+            return factory.updateClassExpression(node, modifiers, node.name, /*typeParameters*/ undefined, heritageClauses, members);
+        }
+    }
+
+    function prepareConstructor(_parent: ClassLikeDeclaration, classInfo: ClassInfo) {
+        // Decorated instance members can add "extra" initializers to the instance. If a class contains any instance
+        // fields, we'll inject the `__runInitializers()` call for these extra initializers into the initializer of
+        // the first class member that will be initialized. However, if the class does not contain any fields that
+        // we can piggyback on, we need to synthesize a `__runInitializers()` call in the constructor instead.
+        if (classInfo.instanceExtraInitializersName && !classInfo.hasNonAmbientInstanceFields) {
+            // If there are instance extra initializers we need to add them to the body along with any
+            // field initializers
+            const statements: Statement[] = [];
+
+            statements.push(
+                factory.createExpressionStatement(
+                    emitHelpers().createRunInitializersHelper(
+                        factory.createThis(),
+                        classInfo.instanceExtraInitializersName
+                    )
+                )
+            );
+
+            return statements;
+        }
+    }
+
+    function visitConstructorDeclaration(node: ConstructorDeclaration) {
+        enterClassElement(node);
+        const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
+        const parameters = visitNodes(node.parameters, visitor, isParameter);
+        let body: Block | undefined;
+        if (node.body && classInfo) {
+            // If there are instance extra initializers we need to add them to the body along with any
+            // field initializers
+            const initializerStatements = prepareConstructor(classInfo.class, classInfo);
+            if (initializerStatements) {
+                const statements: Statement[] = [];
+                const nonPrologueStart = factory.copyPrologue(node.body.statements, statements, /*ensureUseStrict*/ false, visitor);
+                addRange(statements, initializerStatements);
+                addRange(statements, visitNodes(node.body.statements, visitor, isStatement, nonPrologueStart));
+                body = factory.createBlock(statements, /*multiLine*/ true);
+                setOriginalNode(body, node.body);
+                setTextRange(body, node.body);
+            }
+        }
+
+        body ??= visitNode(node.body, visitor, isBlock);
+        exitClassElement();
+        return factory.updateConstructorDeclaration(node, modifiers, parameters, body);
+    }
+
+    function finishClassElement(updated: ClassElement, original: ClassElement) {
+        if (updated !== original) {
+            // While we emit the source map for the node after skipping decorators and modifiers,
+            // we need to emit the comments for the original range.
+            setCommentRange(updated, original);
+            setSourceMapRange(updated, moveRangePastDecorators(original));
+        }
+        return updated;
+    }
+
+    function partialTransformClassElement<
+        TNode extends MethodDeclaration | PropertyDeclaration | GetAccessorDeclaration | SetAccessorDeclaration,
+    >(
+        member: TNode,
+        useNamedEvaluation: boolean,
+        classInfo: ClassInfo | undefined,
+        createDescriptor?: (node: TNode & { readonly name: PrivateIdentifier }, modifiers: ModifiersArray | undefined) => Expression
+    ) {
+        let referencedName: Expression | undefined;
+        let name: PropertyName | undefined;
+        let initializersName: Identifier | undefined;
+        let thisArg: Identifier | undefined;
+        let descriptorName: Identifier | undefined;
+        if (!classInfo) {
+            const modifiers = visitNodes(member.modifiers, modifierVisitor, isModifier);
+            enterName();
+            if (useNamedEvaluation) {
+                ({ referencedName, name } = visitReferencedPropertyName(member.name));
+            }
+            else {
+                name = visitPropertyName(member.name);
+            }
+            exitName();
+            return { modifiers, referencedName, name, initializersName, descriptorName, thisArg };
+        }
+
+        // Member decorators require privileged access to private names. However, computed property
+        // evaluation occurs interspersed with decorator evaluation. This means that if we encounter
+        // a computed property name we must inline decorator evaluation.
+        const memberDecorators = transformAllDecoratorsOfDeclaration(getAllDecoratorsOfClassElement(member, classInfo.class, /*useLegacyDecorators*/ false));
+        const modifiers = visitNodes(member.modifiers, modifierVisitor, isModifier);
+
+        if (memberDecorators) {
+            const memberDecoratorsName = createHelperVariable(member, "decorators");
+            const memberDecoratorsArray = factory.createArrayLiteralExpression(memberDecorators);
+            const memberDecoratorsAssignment = factory.createAssignment(memberDecoratorsName, memberDecoratorsArray);
+            const memberInfo: MemberInfo = { memberDecoratorsName };
+            classInfo.memberInfos ??= new Map();
+            classInfo.memberInfos.set(member, memberInfo);
+            pendingExpressions ??= [];
+            pendingExpressions.push(memberDecoratorsAssignment);
+
+            // 5. Static non-field (method/getter/setter/auto-accessor) element decorators are applied
+            // 6. Non-static non-field (method/getter/setter/auto-accessor) element decorators are applied
+            // 7. Static field (excl. auto-accessor) element decorators are applied
+            // 8. Non-static field (excl. auto-accessor) element decorators are applied
+            const statements =
+                isMethodOrAccessor(member) || isAutoAccessorPropertyDeclaration(member) ?
+                    isStatic(member) ?
+                        classInfo.staticNonFieldDecorationStatements ??= [] :
+                        classInfo.nonStaticNonFieldDecorationStatements ??= [] :
+                isPropertyDeclaration(member) && !isAutoAccessorPropertyDeclaration(member) ?
+                    isStatic(member) ?
+                        classInfo.staticFieldDecorationStatements ??= [] :
+                        classInfo.nonStaticFieldDecorationStatements ??= [] :
+                Debug.fail();
+
+            const kind =
+                isGetAccessorDeclaration(member) ? "getter" :
+                isSetAccessorDeclaration(member) ? "setter" :
+                isMethodDeclaration(member) ? "method" :
+                isAutoAccessorPropertyDeclaration(member) ? "accessor" :
+                isPropertyDeclaration(member) ? "field" :
+                Debug.fail();
+
+            let propertyName: ESDecorateName;
+            if (isIdentifier(member.name) || isPrivateIdentifier(member.name)) {
+                propertyName = { computed: false, name: member.name };
+            }
+            else if (isPropertyNameLiteral(member.name)) {
+                propertyName = { computed: true, name: factory.createStringLiteralFromNode(member.name) };
+            }
+            else {
+                const expression = member.name.expression;
+                if (isPropertyNameLiteral(expression) && !isIdentifier(expression)) {
+                    propertyName = { computed: true, name: factory.createStringLiteralFromNode(expression) };
+                }
+                else {
+                    enterName();
+                    ({ referencedName, name } = visitReferencedPropertyName(member.name));
+                    propertyName = { computed: true, name: referencedName };
+                    exitName();
+                }
+            }
+
+            const context: ESDecorateClassElementContext = {
+                kind,
+                name: propertyName,
+                static: isStatic(member),
+                private: isPrivateIdentifier(member.name),
+                access: {
+                    // 15.7.3 CreateDecoratorAccessObject (kind, name)
+                    // 2. If _kind_ is ~field~, ~method~, ~accessor~, or ~getter~, then ...
+                    get: isPropertyDeclaration(member) || isGetAccessorDeclaration(member) || isMethodDeclaration(member),
+                    // 3. If _kind_ is ~field~, ~accessor~, or ~setter~, then ...
+                    set: isPropertyDeclaration(member) || isSetAccessorDeclaration(member)
+                },
+            };
+
+            const extraInitializers = isStatic(member) ?
+                classInfo.staticExtraInitializersName ??= factory.createUniqueName("_staticExtraInitializers", GeneratedIdentifierFlags.Optimistic) :
+                classInfo.instanceExtraInitializersName ??= factory.createUniqueName("_instanceExtraInitializers", GeneratedIdentifierFlags.Optimistic);
+
+            if (isMethodOrAccessor(member)) {
+                // __esDecorate(this, null, _static_member_decorators, { kind: "method", name: "...", static: true, private: false, access: { ... } }, _staticExtraInitializers);
+                // __esDecorate(this, null, _member_decorators, { kind: "method", name: "...", static: false, private: false, access: { ... } }, _instanceExtraInitializers);
+                // __esDecorate(this, null, _static_member_decorators, { kind: "getter", name: "...", static: true, private: false, access: { ... } }, _staticExtraInitializers);
+                // __esDecorate(this, null, _member_decorators, { kind: "getter", name: "...", static: false, private: false, access: { ... } }, _instanceExtraInitializers);
+                // __esDecorate(this, null, _static_member_decorators, { kind: "setter", name: "...", static: true, private: false, access: { ... } }, _staticExtraInitializers);
+                // __esDecorate(this, null, _member_decorators, { kind: "setter", name: "...", static: false, private: false, access: { ... } }, _instanceExtraInitializers);
+
+                // __esDecorate(this, _static_member_descriptor = { value() { ... } }, _static_member_decorators, { kind: "method", name: "...", static: true, private: true, access: { ... } }, _staticExtraInitializers);
+                // __esDecorate(this, _member_descriptor = { value() { ... } }, _member_decorators, { kind: "method", name: "...", static: false, private: true, access: { ... } }, _instanceExtraInitializers);
+                // __esDecorate(this, _static_member_descriptor = { get() { ... } }, _static_member_decorators, { kind: "getter", name: "...", static: true, private: true, access: { ... } }, _staticExtraInitializers);
+                // __esDecorate(this, _member_descriptor = { get() { ... } }, _member_decorators, { kind: "getter", name: "...", static: false, private: true, access: { ... } }, _instanceExtraInitializers);
+                // __esDecorate(this, _static_member_descriptor = { set() { ... } }, _static_member_decorators, { kind: "setter", name: "...", static: true, private: true, access: { ... } }, _staticExtraInitializers);
+                // __esDecorate(this, _member_descriptor = { set() { ... } }, _member_decorators, { kind: "setter", name: "...", static: false, private: true, access: { ... } }, _instanceExtraInitializers);
+
+                let descriptor: Expression | undefined;
+                if (isPrivateIdentifierClassElementDeclaration(member) && createDescriptor) {
+                    descriptor = createDescriptor(member, visitNodes(modifiers, node => tryCast(node, isAsyncModifier), isModifier));
+                    memberInfo.memberDescriptorName = descriptorName = createHelperVariable(member, "descriptor");
+                    descriptor = factory.createAssignment(descriptorName, descriptor);
+                }
+
+                const esDecorateExpression = emitHelpers().createESDecorateHelper(factory.createThis(), descriptor ?? factory.createNull(), memberDecoratorsName, context, factory.createNull(), extraInitializers);
+                const esDecorateStatement = factory.createExpressionStatement(esDecorateExpression);
+                setSourceMapRange(esDecorateStatement, moveRangePastDecorators(member));
+                statements.push(esDecorateStatement);
+            }
+            else if (isPropertyDeclaration(member)) {
+                initializersName = memberInfo.memberInitializersName ??= createHelperVariable(member, "initializers");
+
+                if (isStatic(member)) {
+                    thisArg = classInfo.classThis;
+                }
+
+                let descriptor: Expression | undefined;
+                if (isPrivateIdentifierClassElementDeclaration(member) && hasAccessorModifier(member) && createDescriptor) {
+                    descriptor = createDescriptor(member, /*modifiers*/ undefined);
+                    memberInfo.memberDescriptorName = descriptorName = createHelperVariable(member, "descriptor");
+                    descriptor = factory.createAssignment(descriptorName, descriptor);
+                }
+
+                // _static_field_initializers = __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "...", static: true, private: ..., access: { ... } }, _staticExtraInitializers);
+                // _field_initializers = __esDecorate(null, null, _member_decorators, { kind: "field", name: "...", static: false, private: ..., access: { ... } }, _instanceExtraInitializers);
+                const esDecorateExpression = emitHelpers().createESDecorateHelper(
+                    isAutoAccessorPropertyDeclaration(member) ?
+                        factory.createThis() :
+                        factory.createNull(),
+                    descriptor ?? factory.createNull(),
+                    memberDecoratorsName,
+                    context,
+                    initializersName,
+                    extraInitializers);
+                const esDecorateStatement = factory.createExpressionStatement(esDecorateExpression);
+                setSourceMapRange(esDecorateStatement, moveRangePastDecorators(member));
+                statements.push(esDecorateStatement);
+            }
+        }
+
+        if (name === undefined) {
+            enterName();
+            if (useNamedEvaluation) {
+                ({ referencedName, name } = visitReferencedPropertyName(member.name));
+            }
+            else {
+                name = visitPropertyName(member.name);
+            }
+            exitName();
+        }
+
+        if (!some(modifiers) && (isMethodDeclaration(member) || isPropertyDeclaration(member))) {
+            // Don't emit leading comments on the name for methods and properties without modifiers, otherwise we
+            // will end up printing duplicate comments.
+            setEmitFlags(name, EmitFlags.NoLeadingComments);
+        }
+
+        return { modifiers, referencedName, name, initializersName, descriptorName, thisArg };
+    }
+
+    function visitMethodDeclaration(node: MethodDeclaration) {
+        enterClassElement(node);
+        const { modifiers, name, descriptorName } = partialTransformClassElement(node, /*useNamedEvaluation*/ false, classInfo, createMethodDescriptorObject);
+        if (descriptorName) {
+            exitClassElement();
+            return finishClassElement(createMethodDescriptorForwarder(modifiers, name, descriptorName), node);
+        }
+        else {
+            const parameters = visitNodes(node.parameters, visitor, isParameter);
+            const body = visitNode(node.body, visitor, isBlock);
+            exitClassElement();
+            return finishClassElement(factory.updateMethodDeclaration(node, modifiers, node.asteriskToken, name, /*questionToken*/ undefined, /*typeParameters*/ undefined, parameters, /*type*/ undefined, body), node);
+        }
+    }
+
+    function visitGetAccessorDeclaration(node: GetAccessorDeclaration) {
+        enterClassElement(node);
+        const { modifiers, name, descriptorName } = partialTransformClassElement(node, /*useNamedEvaluation*/ false, classInfo, createGetAccessorDescriptorObject);
+        if (descriptorName) {
+            exitClassElement();
+            return finishClassElement(createGetAccessorDescriptorForwarder(modifiers, name, descriptorName), node);
+        }
+        else {
+            const parameters = visitNodes(node.parameters, visitor, isParameter);
+            const body = visitNode(node.body, visitor, isBlock);
+            exitClassElement();
+            return finishClassElement(factory.updateGetAccessorDeclaration(node, modifiers, name, parameters, /*type*/ undefined, body), node);
+        }
+    }
+
+    function visitSetAccessorDeclaration(node: SetAccessorDeclaration) {
+        enterClassElement(node);
+        const { modifiers, name, descriptorName } = partialTransformClassElement(node, /*useNamedEvaluation*/ false, classInfo, createSetAccessorDescriptorObject);
+        if (descriptorName) {
+            exitClassElement();
+            return finishClassElement(createSetAccessorDescriptorForwarder(modifiers, name, descriptorName), node);
+        }
+        else {
+            const parameters = visitNodes(node.parameters, visitor, isParameter);
+            const body = visitNode(node.body, visitor, isBlock);
+            exitClassElement();
+            return finishClassElement(factory.updateSetAccessorDeclaration(node, modifiers, name, parameters, body), node);
+        }
+    }
+
+    function visitClassStaticBlockDeclaration(node: ClassStaticBlockDeclaration) {
+        enterClassElement(node);
+
+        if (classInfo) classInfo.hasStaticInitializers = true;
+        const result = visitEachChild(node, visitor, context);
+
+        exitClassElement();
+        return result;
+    }
+
+    function visitPropertyDeclaration(node: PropertyDeclaration) {
+        enterClassElement(node);
+
+        // TODO(rbuckton): We support decorating `declare x` fields with legacyDecorators, but we currently don't
+        //                 support them with esDecorators. We need to consider whether we will support them in the
+        //                 future, and how. For now, these should be elided by the `ts` transform.
+        Debug.assert(!isAmbientPropertyDeclaration(node), "Not yet implemented.");
+
+        // 10.2.1.3 RS: EvaluateBody
+        //   Initializer : `=` AssignmentExpression
+        //     ...
+        //     3. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true*, then
+        //        a. Let _value_ be ? NamedEvaluation of |Initializer| with argument _functionObject_.[[ClassFieldInitializerName]].
+        //     ...
+
+        const useNamedEvaluation = isNamedEvaluation(node, isAnonymousClassNeedingAssignedName);
+        const { modifiers, name, referencedName, initializersName, descriptorName, thisArg } = partialTransformClassElement(node, useNamedEvaluation, classInfo, hasAccessorModifier(node) ? createAccessorPropertyDescriptorObject : undefined);
+
+        startLexicalEnvironment();
+
+        let initializer = referencedName ?
+            visitNode(node.initializer, node => namedEvaluationVisitor(node, referencedName), isExpression):
+            visitNode(node.initializer, visitor, isExpression);
+
+        if (initializersName) {
+            initializer = emitHelpers().createRunInitializersHelper(
+                thisArg ?? factory.createThis(),
+                initializersName,
+                initializer ?? factory.createVoidZero());
+        }
+
+        if (!isStatic(node) && classInfo?.instanceExtraInitializersName && !classInfo?.hasInjectedInstanceInitializers) {
+            // for the first non-static field initializer, inject a call to `__runInitializers`.
+            classInfo.hasInjectedInstanceInitializers = true;
+            initializer ??= factory.createVoidZero();
+            initializer = factory.createParenthesizedExpression(factory.createComma(
+                emitHelpers().createRunInitializersHelper(
+                    factory.createThis(),
+                    classInfo.instanceExtraInitializersName
+                ),
+                initializer
+            ));
+        }
+
+        if (isStatic(node) && classInfo && initializer) {
+            classInfo.hasStaticInitializers = true;
+        }
+
+        const declarations = endLexicalEnvironment();
+        if (some(declarations)) {
+            initializer = factory.createImmediatelyInvokedArrowFunction([
+                ...declarations,
+                factory.createReturnStatement(initializer)
+            ]);
+        }
+
+        exitClassElement();
+
+        if (hasAccessorModifier(node) && descriptorName) {
+            // given:
+            //  accessor #x = 1;
+            //
+            // emits:
+            //  static {
+            //      _esDecorate(null, _private_x_descriptor = { get() { return this.#x_1; }, set(value) { this.#x_1 = value; } }, ...)
+            //  }
+            //  ...
+            //  #x_1 = 1;
+            //  get #x() { return _private_x_descriptor.get.call(this); }
+            //  set #x(value) { _private_x_descriptor.set.call(this, value); }
+
+            const commentRange = getCommentRange(node);
+            const sourceMapRange = getSourceMapRange(node);
+
+            // Since we're creating two declarations where there was previously one, cache
+            // the expression for any computed property names.
+            const name = node.name;
+            let getterName = name;
+            let setterName = name;
+            if (isComputedPropertyName(name) && !isSimpleInlineableExpression(name.expression)) {
+                const cacheAssignment = findComputedPropertyNameCacheAssignment(name);
+                if (cacheAssignment) {
+                    getterName = factory.updateComputedPropertyName(name, visitNode(name.expression, visitor, isExpression));
+                    setterName = factory.updateComputedPropertyName(name, cacheAssignment.left);
+                }
+                else {
+                    const temp = factory.createTempVariable(hoistVariableDeclaration);
+                    setSourceMapRange(temp, name.expression);
+                    const expression = visitNode(name.expression, visitor, isExpression);
+                    const assignment = factory.createAssignment(temp, expression);
+                    setSourceMapRange(assignment, name.expression);
+                    getterName = factory.updateComputedPropertyName(name, assignment);
+                    setterName = factory.updateComputedPropertyName(name, temp);
+                }
+            }
+
+            const modifiersWithoutAccessor = visitNodes(modifiers, node => node.kind !== SyntaxKind.AccessorKeyword ? node : undefined, isModifier);
+
+            const backingField = createAccessorPropertyBackingField(factory, node, modifiersWithoutAccessor, initializer);
+            setOriginalNode(backingField, node);
+            setEmitFlags(backingField, EmitFlags.NoComments);
+            setSourceMapRange(backingField, sourceMapRange);
+            setSourceMapRange(backingField.name, node.name);
+
+            const getter = createGetAccessorDescriptorForwarder(modifiersWithoutAccessor, getterName, descriptorName);
+            setOriginalNode(getter, node);
+            setCommentRange(getter, commentRange);
+            setSourceMapRange(getter, sourceMapRange);
+
+            const setter = createSetAccessorDescriptorForwarder(modifiersWithoutAccessor, setterName, descriptorName);
+            setOriginalNode(setter, node);
+            setEmitFlags(setter, EmitFlags.NoComments);
+            setSourceMapRange(setter, sourceMapRange);
+
+            return [backingField, getter, setter];
+        }
+
+        return finishClassElement(factory.updatePropertyDeclaration(node, modifiers, name, /*questionOrExclamationToken*/ undefined, /*type*/ undefined, initializer), node);
+    }
+
+    function visitThisExpression(node: ThisExpression) {
+        return classThis ?? node;
+    }
+
+    function visitCallExpression(node: CallExpression) {
+        if (isSuperProperty(node.expression) && classThis) {
+            const expression = visitNode(node.expression, visitor, isExpression);
+            const argumentsList = visitNodes(node.arguments, visitor, isExpression);
+            const invocation = factory.createFunctionCallCall(expression, classThis, argumentsList);
+            setOriginalNode(invocation, node);
+            setTextRange(invocation, node);
+            return invocation;
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitTaggedTemplateExpression(node: TaggedTemplateExpression) {
+        if (isSuperProperty(node.tag) && classThis) {
+            const tag = visitNode(node.tag, visitor, isExpression);
+            const boundTag = factory.createFunctionBindCall(tag, classThis, []);
+            setOriginalNode(boundTag, node);
+            setTextRange(boundTag, node);
+            const template = visitNode(node.template, visitor, isTemplateLiteral);
+            return factory.updateTaggedTemplateExpression(node, boundTag, /*typeArguments*/ undefined, template);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitPropertyAccessExpression(node: PropertyAccessExpression) {
+        if (isSuperProperty(node) && isIdentifier(node.name) && classThis && classSuper) {
+            const propertyName = factory.createStringLiteralFromNode(node.name);
+            const superProperty = factory.createReflectGetCall(classSuper, propertyName, classThis);
+            setOriginalNode(superProperty, node.expression);
+            setTextRange(superProperty, node.expression);
+            return superProperty;
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitElementAccessExpression(node: ElementAccessExpression) {
+        if (isSuperProperty(node) && classThis && classSuper) {
+            const propertyName = visitNode(node.argumentExpression, visitor, isExpression);
+            const superProperty = factory.createReflectGetCall(classSuper, propertyName, classThis);
+            setOriginalNode(superProperty, node.expression);
+            setTextRange(superProperty, node.expression);
+            return superProperty;
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitParameterDeclaration(node: ParameterDeclaration) {
+        // 8.6.3 RS: IteratorBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     5. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+        //
+        // 14.3.3.3 RS: KeyedBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     4. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+
+        let updated: ParameterDeclaration;
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.initializer);
+            const name = visitNode(node.name, visitor, isBindingName);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            updated = factory.updateParameterDeclaration(
+                node,
+                /*modifiers*/ undefined,
+                /*dotDotDotToken*/ undefined,
+                name,
+                /*questionToken*/ undefined,
+                /*type*/ undefined,
+                initializer);
+        }
+        else {
+            updated = factory.updateParameterDeclaration(
+                node,
+                /*modifiers*/ undefined,
+                node.dotDotDotToken,
+                visitNode(node.name, visitor, isBindingName),
+                /*questionToken*/ undefined,
+                /*type*/ undefined,
+                visitNode(node.initializer, visitor, isExpression)
+            );
+        }
+
+        if (updated !== node) {
+            // While we emit the source map for the node after skipping decorators and modifiers,
+            // we need to emit the comments for the original range.
+            setCommentRange(updated, node);
+            setTextRange(updated, moveRangePastModifiers(node));
+            setSourceMapRange(updated, moveRangePastModifiers(node));
+            setEmitFlags(updated.name, EmitFlags.NoTrailingSourceMap);
+        }
+        return updated;
+    }
+
+    function isAnonymousClassNeedingAssignedName(node: AnonymousFunctionDefinition) {
+        return isClassExpression(node) && !node.name && isDecoratedClassLike(node);
+    }
+
+    function visitForStatement(node: ForStatement) {
+        return factory.updateForStatement(
+            node,
+            visitNode(node.initializer, discardedValueVisitor, isForInitializer),
+            visitNode(node.condition, visitor, isExpression),
+            visitNode(node.incrementor, discardedValueVisitor, isExpression),
+            visitIterationBody(node.statement, visitor, context)
+        );
+    }
+
+    function visitExpressionStatement(node: ExpressionStatement) {
+        return visitEachChild(node, discardedValueVisitor, context);
+    }
+
+    function visitBinaryExpression(node: BinaryExpression, discarded: boolean) {
+        if (isDestructuringAssignment(node)) {
+            const left = visitAssignmentPattern(node.left);
+            const right = visitNode(node.right, visitor, isExpression);
+            return factory.updateBinaryExpression(node, left, node.operatorToken, right);
+        }
+
+        if (isAssignmentExpression(node)) {
+            // 13.15.2 RS: Evaluation
+            //   AssignmentExpression : LeftHandSideExpression `=` AssignmentExpression
+            //     1. If |LeftHandSideExpression| is neither an |ObjectLiteral| nor an |ArrayLiteral|, then
+            //        a. Let _lref_ be ? Evaluation of |LeftHandSideExpression|.
+            //        b. If IsAnonymousFunctionDefinition(|AssignmentExpression|) and IsIdentifierRef of |LeftHandSideExpression| are both *true*, then
+            //           i. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+            //
+            //   AssignmentExpression : LeftHandSideExpression `&&=` AssignmentExpression
+            //     ...
+            //     5. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and IsIdentifierRef of |LeftHandSideExpression| is *true*, then
+            //        a. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+            //
+            //   AssignmentExpression : LeftHandSideExpression `||=` AssignmentExpression
+            //     ...
+            //     5. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and IsIdentifierRef of |LeftHandSideExpression| is *true*, then
+            //        a. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+            //
+            //   AssignmentExpression : LeftHandSideExpression `??=` AssignmentExpression
+            //     ...
+            //     4. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and IsIdentifierRef of |LeftHandSideExpression| is *true*, then
+            //        a. Let _rval_ be ? NamedEvaluation of |AssignmentExpression| with argument _lref_.[[ReferencedName]].
+            //     ...
+
+            if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+                const assignedName = getAssignedNameOfIdentifier(node.left, node.right);
+                const left = visitNode(node.left, visitor, isExpression);
+                const right = visitNode(node.right, node => namedEvaluationVisitor(node, assignedName), isExpression);
+                return factory.updateBinaryExpression(node, left, node.operatorToken, right);
+            }
+
+            if (isSuperProperty(node.left) && classThis && classSuper) {
+                let setterName =
+                    isElementAccessExpression(node.left) ? visitNode(node.left.argumentExpression, visitor, isExpression) :
+                    isIdentifier(node.left.name) ? factory.createStringLiteralFromNode(node.left.name) :
+                    undefined;
+                if (setterName) {
+                    // super.x = ...
+                    // super.x += ...
+                    // super[x] = ...
+                    // super[x] += ...
+                    let expression = visitNode(node.right, visitor, isExpression);
+                    if (isCompoundAssignment(node.operatorToken.kind)) {
+                        let getterName = setterName;
+                        if (!isSimpleInlineableExpression(setterName)) {
+                            getterName = factory.createTempVariable(hoistVariableDeclaration);
+                            setterName = factory.createAssignment(getterName, setterName);
+                        }
+
+                        const superPropertyGet = factory.createReflectGetCall(
+                            classSuper,
+                            getterName,
+                            classThis);
+                        setOriginalNode(superPropertyGet, node.left);
+                        setTextRange(superPropertyGet, node.left);
+
+                        expression = factory.createBinaryExpression(
+                            superPropertyGet,
+                            getNonAssignmentOperatorForCompoundAssignment(node.operatorToken.kind),
+                            expression
+                        );
+                        setTextRange(expression, node);
+                    }
+
+                    const temp = discarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
+                    if (temp) {
+                        expression = factory.createAssignment(temp, expression);
+                        setTextRange(temp, node);
+                    }
+
+                    expression = factory.createReflectSetCall(
+                        classSuper,
+                        setterName,
+                        expression,
+                        classThis
+                    );
+                    setOriginalNode(expression, node);
+                    setTextRange(expression, node);
+
+                    if (temp) {
+                        expression = factory.createComma(expression, temp);
+                        setTextRange(expression, node);
+                    }
+
+                    return expression;
+                }
+            }
+        }
+
+        if (node.operatorToken.kind === SyntaxKind.CommaToken) {
+            const left = visitNode(node.left, discardedValueVisitor, isExpression);
+            const right = visitNode(node.right, discarded ? discardedValueVisitor : visitor, isExpression);
+            return factory.updateBinaryExpression(node, left, node.operatorToken, right);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitPreOrPostfixUnaryExpression(node: PrefixUnaryExpression | PostfixUnaryExpression, discarded: boolean) {
+        if (node.operator === SyntaxKind.PlusPlusToken ||
+            node.operator === SyntaxKind.MinusMinusToken) {
+            const operand = skipParentheses(node.operand);
+            if (isSuperProperty(operand) && classThis && classSuper) {
+                let setterName =
+                    isElementAccessExpression(operand) ? visitNode(operand.argumentExpression, visitor, isExpression) :
+                    isIdentifier(operand.name) ? factory.createStringLiteralFromNode(operand.name) :
+                    undefined;
+                if (setterName) {
+                    let getterName = setterName;
+                    if (!isSimpleInlineableExpression(setterName)) {
+                        getterName = factory.createTempVariable(hoistVariableDeclaration);
+                        setterName = factory.createAssignment(getterName, setterName);
+                    }
+
+                    let expression: Expression = factory.createReflectGetCall(classSuper, getterName, classThis);
+                    setOriginalNode(expression, node);
+                    setTextRange(expression, node);
+
+                    // If the result of this expression is discarded (i.e., it's in a position where the result
+                    // will be otherwise unused, such as in an expression statement or the left side of a comma), we
+                    // don't need to create an extra temp variable to hold the result:
+                    //
+                    //  source (discarded):
+                    //    super.x++;
+                    //  generated:
+                    //    _a = Reflect.get(_super, "x"), _a++, Reflect.set(_super, "x", _a);
+                    //
+                    // Above, the temp variable `_a` is used to perform the correct coercion (i.e., number or
+                    // bigint). Since the result of the postfix unary is discarded, we don't need to capture the
+                    // result of the expression.
+                    //
+                    //  source (not discarded):
+                    //    y = super.x++;
+                    //  generated:
+                    //    y = (_a = Reflect.get(_super, "x"), _b = _a++, Reflect.set(_super, "x", _a), _b);
+                    //
+                    // When the result isn't discarded, we introduce a new temp variable (`_b`) to capture the
+                    // result of the operation so that we can provide it to `y` when the assignment is complete.
+
+                    const temp = discarded ? undefined : factory.createTempVariable(hoistVariableDeclaration);
+                    expression = expandPreOrPostfixIncrementOrDecrementExpression(factory, node, expression, hoistVariableDeclaration, temp);
+                    expression = factory.createReflectSetCall(classSuper, setterName, expression, classThis);
+                    setOriginalNode(expression, node);
+                    setTextRange(expression, node);
+
+                    if (temp) {
+                        expression = factory.createComma(expression, temp);
+                        setTextRange(expression, node);
+                    }
+
+                    return expression;
+                }
+            }
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitCommaListExpression(node: CommaListExpression, discarded: boolean) {
+        const elements = discarded ?
+            visitCommaListElements(node.elements, discardedValueVisitor) :
+            visitCommaListElements(node.elements, visitor, discardedValueVisitor);
+        return factory.updateCommaListExpression(node, elements);
+    }
+
+    function visitReferencedPropertyName(node: PropertyName) {
+        if (isPropertyNameLiteral(node) || isPrivateIdentifier(node)) {
+            const referencedName = factory.createStringLiteralFromNode(node);
+            const name = visitNode(node, visitor, isPropertyName);
+            return { referencedName, name };
+        }
+
+        if (isPropertyNameLiteral(node.expression) && !isIdentifier(node.expression)) {
+            const referencedName = factory.createStringLiteralFromNode(node.expression);
+            const name = visitNode(node, visitor, isPropertyName);
+            return { referencedName, name };
+        }
+
+        const referencedName = factory.getGeneratedNameForNode(node);
+        hoistVariableDeclaration(referencedName);
+
+        const key = emitHelpers().createPropKeyHelper(visitNode(node.expression, visitor, isExpression));
+        const assignment = factory.createAssignment(referencedName, key);
+        const name = factory.updateComputedPropertyName(node, injectPendingExpressions(assignment));
+        return { referencedName, name };
+    }
+
+    function visitPropertyName(node: PropertyName) {
+        if (isComputedPropertyName(node)) {
+            return visitComputedPropertyName(node);
+        }
+        return visitNode(node, visitor, isPropertyName);
+    }
+
+    function visitComputedPropertyName(node: ComputedPropertyName) {
+        let expression = visitNode(node.expression, visitor, isExpression);
+        if (!isSimpleInlineableExpression(expression)) {
+            expression = injectPendingExpressions(expression);
+        }
+        return factory.updateComputedPropertyName(node, expression);
+    }
+
+    function visitPropertyAssignment(node: PropertyAssignment) {
+        // 13.2.5.5 RS: PropertyDefinitionEvaluation
+        //   PropertyAssignment : PropertyName `:` AssignmentExpression
+        //     ...
+        //     5. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true* and _isProtoSetter_ is *false*, then
+        //        a. Let _popValue_ be ? NamedEvaluation of |AssignmentExpression| with argument _propKey_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const { referencedName, name } = visitReferencedPropertyName(node.name);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, referencedName), isExpression);
+            return factory.updatePropertyAssignment(node, name, initializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitVariableDeclaration(node: VariableDeclaration) {
+        // 14.3.1.2 RS: Evaluation
+        //   LexicalBinding : BindingIdentifier Initializer
+        //     ...
+        //     3. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //        a. Let _value_ be ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+        //
+        // 14.3.2.1 RS: Evaluation
+        //   VariableDeclaration : BindingIdentifier Initializer
+        //     ...
+        //     3. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //        a. Let _value_ be ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.initializer);
+            const name = visitNode(node.name, visitor, isBindingName);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateVariableDeclaration(node, name, /*exclamationToken*/ undefined, /*type*/ undefined, initializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitBindingElement(node: BindingElement) {
+        // 8.6.3 RS: IteratorBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     5. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+        //
+        // 14.3.3.3 RS: KeyedBindingInitialization
+        //   SingleNameBinding : BindingIdentifier Initializer?
+        //     ...
+        //     4. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _bindingId_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.initializer);
+            const propertyName = visitNode(node.propertyName, visitor, isPropertyName);
+            const name = visitNode(node.name, visitor, isBindingName);
+            const initializer = visitNode(node.initializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateBindingElement(node, /*dotDotDotToken*/ undefined, propertyName, name, initializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitDestructuringAssignmentTarget(node: LeftHandSideExpression): Expression {
+        if (isObjectLiteralExpression(node) || isArrayLiteralExpression(node)) {
+            return visitAssignmentPattern(node);
+        }
+
+        if (isSuperProperty(node) && classThis && classSuper) {
+            const propertyName =
+                isElementAccessExpression(node) ? visitNode(node.argumentExpression, visitor, isExpression) :
+                isIdentifier(node.name) ? factory.createStringLiteralFromNode(node.name) :
+                undefined;
+            if (propertyName) {
+                const paramName = factory.createTempVariable(/*recordTempVariable*/ undefined);
+                const expression = factory.createAssignmentTargetWrapper(
+                    paramName,
+                    factory.createReflectSetCall(
+                        classSuper,
+                        propertyName,
+                        paramName,
+                        classThis,
+                    )
+                );
+                setOriginalNode(expression, node);
+                setTextRange(expression, node);
+                return expression;
+            }
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitAssignmentElement(node: Exclude<ArrayAssignmentElement, SpreadElement | OmittedExpression>): ArrayAssignmentElement {
+        // 13.15.5.5 RS: IteratorDestructuringAssignmentEvaluation
+        //   AssignmentElement : DestructuringAssignmentTarget Initializer?
+        //     ...
+        //     4. If |Initializer| is present and _value_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) and IsIdentifierRef of |DestructuringAssignmentTarget| are both *true*, then
+        //           i. Let _v_ be ? NamedEvaluation of |Initializer| with argument _lref_.[[ReferencedName]].
+        //     ...
+
+        if (isAssignmentExpression(node, /*excludeCompoundAssignment*/ true)) {
+            const assignmentTarget = visitDestructuringAssignmentTarget(node.left);
+            let initializer: Expression;
+            if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+                const assignedName = getAssignedNameOfIdentifier(node.left, node.right);
+                initializer = visitNode(node.right, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            }
+            else {
+                initializer = visitNode(node.right, visitor, isExpression);
+            }
+            return factory.updateBinaryExpression(node, assignmentTarget, node.operatorToken, initializer) as ArrayAssignmentElement;
+        }
+        else {
+            return visitDestructuringAssignmentTarget(node) as ArrayAssignmentElement;
+        }
+    }
+
+    function visitAssignmentRestElement(node: SpreadElement) {
+        if (isLeftHandSideExpression(node.expression)) {
+            const expression = visitDestructuringAssignmentTarget(node.expression);
+            return factory.updateSpreadElement(node, expression);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitArrayAssignmentElement(node: Expression): Expression {
+        Debug.assertNode(node, isArrayBindingOrAssignmentElement);
+        if (isSpreadElement(node)) return visitAssignmentRestElement(node);
+        if (!isOmittedExpression(node)) return visitAssignmentElement(node);
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitAssignmentProperty(node: PropertyAssignment) {
+        // AssignmentProperty : PropertyName `:` AssignmentElement
+        // AssignmentElement : DestructuringAssignmentTarget Initializer?
+
+        // 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+        //   AssignmentElement : DestructuringAssignmentTarget Initializer?
+        //     ...
+        //     3. If |Initializer| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousfunctionDefinition(|Initializer|) and IsIdentifierRef of |DestructuringAssignmentTarget| are both *true*, then
+        //           i. Let _rhsValue_ be ? NamedEvaluation of |Initializer| with argument _lref_.[[ReferencedName]].
+        //     ...
+
+        const name = visitNode(node.name, visitor, isPropertyName);
+        if (isAssignmentExpression(node.initializer, /*excludeCompoundAssignment*/ true)) {
+            const assignmentElement = visitAssignmentElement(node.initializer);
+            return factory.updatePropertyAssignment(node, name, assignmentElement);
+        }
+
+        if (isLeftHandSideExpression(node.initializer)) {
+            const assignmentElement = visitDestructuringAssignmentTarget(node.initializer);
+            return factory.updatePropertyAssignment(node, name, assignmentElement);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitShorthandAssignmentProperty(node: ShorthandPropertyAssignment) {
+        // AssignmentProperty : IdentifierReference Initializer?
+
+        // 13.15.5.3 RS: PropertyDestructuringAssignmentEvaluation
+        //   AssignmentProperty : IdentifierReference Initializer?
+        //     ...
+        //     4. If |Initializer?| is present and _v_ is *undefined*, then
+        //        a. If IsAnonymousFunctionDefinition(|Initializer|) is *true*, then
+        //           i. Set _v_ to ? NamedEvaluation of |Initializer| with argument _P_.
+        //     ...
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const assignedName = getAssignedNameOfIdentifier(node.name, node.objectAssignmentInitializer);
+            const name = visitNode(node.name, visitor, isIdentifier);
+            const objectAssignmentInitializer = visitNode(node.objectAssignmentInitializer, node => namedEvaluationVisitor(node, assignedName), isExpression);
+            return factory.updateShorthandPropertyAssignment(node, name, objectAssignmentInitializer);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitAssignmentRestProperty(node: SpreadAssignment) {
+        if (isLeftHandSideExpression(node.expression)) {
+            const expression = visitDestructuringAssignmentTarget(node.expression);
+            return factory.updateSpreadAssignment(node, expression);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitObjectAssignmentElement(node: ObjectLiteralElement) {
+        Debug.assertNode(node, isObjectBindingOrAssignmentElement);
+        if (isSpreadAssignment(node)) return visitAssignmentRestProperty(node);
+        if (isShorthandPropertyAssignment(node)) return visitShorthandAssignmentProperty(node);
+        if (isPropertyAssignment(node)) return visitAssignmentProperty(node);
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitAssignmentPattern(node: AssignmentPattern) {
+        if (isArrayLiteralExpression(node)) {
+            const elements = visitNodes(node.elements, visitArrayAssignmentElement, isExpression);
+            return factory.updateArrayLiteralExpression(node, elements);
+        }
+        else {
+            const properties = visitNodes(node.properties, visitObjectAssignmentElement, isObjectLiteralElementLike);
+            return factory.updateObjectLiteralExpression(node, properties);
+        }
+    }
+
+    function visitExportAssignment(node: ExportAssignment) {
+        // 16.2.3.7 RS: Evaluation
+        //   ExportDeclaration : `export` `default` AssignmentExpression `;`
+        //     1. If IsAnonymousFunctionDefinition(|AssignmentExpression|) is *true*, then
+        //        a. Let _value_ be ? NamedEvaluation of |AssignmentExpression| with argument `"default"`.
+        //     ...
+
+        // NOTE: Since emit for `export =` translates to `module.exports = ...`, the assigned nameof the class
+        // is `""`.
+
+        if (isNamedEvaluation(node, isAnonymousClassNeedingAssignedName)) {
+            const referencedName = factory.createStringLiteral(node.isExportEquals ? "" : "default");
+            const modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
+            const expression = visitNode(node.expression, node => namedEvaluationVisitor(node, referencedName), isExpression);
+            return factory.updateExportAssignment(node, modifiers, expression);
+        }
+
+        return visitEachChild(node, visitor, context);
+    }
+
+    function visitParenthesizedExpression(node: ParenthesizedExpression, discarded: boolean, referencedName: Expression | undefined) {
+        // 8.4.5 RS: NamedEvaluation
+        //   ParenthesizedExpression : `(` Expression `)`
+        //     ...
+        //     2. Return ? NamedEvaluation of |Expression| with argument _name_.
+
+        const visitorFunc: Visitor<Node, Node> =
+            discarded ? discardedValueVisitor :
+            referencedName ? node => namedEvaluationVisitor(node, referencedName) :
+            visitor;
+        const expression = visitNode(node.expression, visitorFunc, isExpression);
+        return factory.updateParenthesizedExpression(node, expression);
+    }
+
+    function visitPartiallyEmittedExpression(node: PartiallyEmittedExpression, discarded: boolean, referencedName: Expression | undefined) {
+        // Emulates 8.4.5 RS: NamedEvaluation
+
+        const visitorFunc: Visitor<Node, Node> =
+            discarded ? discardedValueVisitor :
+            referencedName ? node => namedEvaluationVisitor(node, referencedName) :
+            visitor;
+        const expression = visitNode(node.expression, visitorFunc, isExpression);
+        return factory.updatePartiallyEmittedExpression(node, expression);
+    }
+
+    function injectPendingExpressions(expression: Expression) {
+        if (some(pendingExpressions)) {
+            if (isParenthesizedExpression(expression)) {
+                pendingExpressions.push(expression.expression);
+                expression = factory.updateParenthesizedExpression(expression, factory.inlineExpressions(pendingExpressions));
+            }
+            else {
+                pendingExpressions.push(expression);
+                expression = factory.inlineExpressions(pendingExpressions);
+            }
+            pendingExpressions = undefined;
+        }
+        return expression;
+    }
+
+    /**
+     * Transforms all of the decorators for a declaration into an array of expressions.
+     *
+     * @param allDecorators An object containing all of the decorators for the declaration.
+     */
+    function transformAllDecoratorsOfDeclaration(allDecorators: AllDecorators | undefined) {
+        if (!allDecorators) {
+            return undefined;
+        }
+
+        const decoratorExpressions: Expression[] = [];
+        addRange(decoratorExpressions, map(allDecorators.decorators, transformDecorator));
+        return decoratorExpressions;
+    }
+
+    /**
+     * Transforms a decorator into an expression.
+     *
+     * @param decorator The decorator node.
+     */
+    function transformDecorator(decorator: Decorator) {
+        const expression = visitNode(decorator.expression, visitor, isExpression);
+        setEmitFlags(expression, EmitFlags.NoComments);
+        return expression;
+    }
+
+    /**
+     * Creates a `value`, `get`, or `set` method for a pseudo-{@link PropertyDescriptor} object created for a private element.
+     */
+    function createDescriptorMethod(original: Node, name: PrivateIdentifier, modifiers: ModifiersArray | undefined, asteriskToken: AsteriskToken | undefined, kind: "value" | "get" | "set", parameters: readonly ParameterDeclaration[], body: Block | undefined) {
+        const func = factory.createFunctionExpression(
+            modifiers,
+            asteriskToken,
+            /*name*/ undefined,
+            /*typeParameters*/ undefined,
+            parameters,
+            /*type*/ undefined,
+            body ?? factory.createBlock([])
+        );
+        setOriginalNode(func, original);
+        setSourceMapRange(func, moveRangePastDecorators(original));
+        setEmitFlags(func, EmitFlags.NoComments);
+
+        const prefix = kind === "get" || kind === "set" ? kind : undefined;
+        const functionName = factory.createStringLiteralFromNode(name, /*isSingleQuote*/ undefined);
+        const namedFunction = emitHelpers().createSetFunctionNameHelper(func, functionName, prefix);
+
+        const method = factory.createPropertyAssignment(factory.createIdentifier(kind), namedFunction);
+        setOriginalNode(method, original);
+        setSourceMapRange(method, moveRangePastDecorators(original));
+        setEmitFlags(method, EmitFlags.NoComments);
+        return method;
+    }
+
+    /**
+     * Creates a pseudo-{@link PropertyDescriptor} object used when decorating a private {@link MethodDeclaration}.
+     */
+    function createMethodDescriptorObject(node: PrivateIdentifierMethodDeclaration, modifiers: ModifiersArray | undefined) {
+        return factory.createObjectLiteralExpression([
+            createDescriptorMethod(
+                node,
+                node.name,
+                modifiers,
+                node.asteriskToken,
+                "value",
+                visitNodes(node.parameters, visitor, isParameter),
+                visitNode(node.body, visitor, isBlock))
+        ]);
+    }
+
+    /**
+     * Creates a pseudo-{@link PropertyDescriptor} object used when decorating a private {@link GetAccessorDeclaration}.
+     */
+    function createGetAccessorDescriptorObject(node: PrivateIdentifierGetAccessorDeclaration, modifiers: ModifiersArray | undefined) {
+        return factory.createObjectLiteralExpression([
+            createDescriptorMethod(
+                node,
+                node.name,
+                modifiers,
+                /*asteriskToken*/ undefined,
+                "get",
+                [],
+                visitNode(node.body, visitor, isBlock))
+        ]);
+    }
+
+    /**
+     * Creates a pseudo-{@link PropertyDescriptor} object used when decorating a private {@link SetAccessorDeclaration}.
+     */
+    function createSetAccessorDescriptorObject(node: PrivateIdentifierSetAccessorDeclaration, modifiers: ModifiersArray | undefined) {
+        return factory.createObjectLiteralExpression([
+            createDescriptorMethod(
+                node,
+                node.name,
+                modifiers,
+                /*asteriskToken*/ undefined,
+                "set",
+                visitNodes(node.parameters, visitor, isParameter),
+                visitNode(node.body, visitor, isBlock))
+        ]);
+    }
+
+    /**
+     * Creates a pseudo-{@link PropertyDescriptor} object used when decorating an `accessor` {@link PropertyDeclaration} with a private name.
+     */
+    function createAccessorPropertyDescriptorObject(node: PrivateIdentifierPropertyDeclaration, modifiers: ModifiersArray | undefined) {
+        //  {
+        //      get() { return this.${privateName}; },
+        //      set(value) { this.${privateName} = value; },
+        //  }
+
+        return factory.createObjectLiteralExpression([
+            createDescriptorMethod(
+                node,
+                node.name,
+                modifiers,
+                /*asteriskToken*/ undefined,
+                "get",
+                [],
+                factory.createBlock([
+                    factory.createReturnStatement(
+                        factory.createPropertyAccessExpression(
+                            factory.createThis(),
+                            factory.getGeneratedPrivateNameForNode(node.name)
+                        )
+                    )
+                ])
+            ),
+            createDescriptorMethod(
+                node,
+                node.name,
+                modifiers,
+                /*asteriskToken*/ undefined,
+                "set",
+                [factory.createParameterDeclaration(
+                    /*modifiers*/ undefined,
+                    /*dotDotDotToken*/ undefined,
+                    "value"
+                )],
+                factory.createBlock([
+                    factory.createExpressionStatement(
+                        factory.createAssignment(
+                            factory.createPropertyAccessExpression(
+                                factory.createThis(),
+                                factory.getGeneratedPrivateNameForNode(node.name)
+                            ),
+                            factory.createIdentifier("value")
+                        )
+                    )
+                ])
+            )
+        ]);
+    }
+
+    /**
+     * Creates a {@link MethodDeclaration} that forwards its invocation to a {@link PropertyDescriptor} object.
+     * @param modifiers The modifiers for the resulting declaration.
+     * @param name The name for the resulting declaration.
+     * @param descriptorName The name of the descriptor variable.
+     */
+    function createMethodDescriptorForwarder(modifiers: ModifiersArray | undefined, name: PropertyName, descriptorName: Identifier) {
+        // strip off all but the `static` modifier
+        modifiers = visitNodes(modifiers, node => isStaticModifier(node) ? node : undefined, isModifier);
+        return factory.createGetAccessorDeclaration(
+            modifiers,
+            name,
+            [],
+            /*type*/ undefined,
+            factory.createBlock([
+                factory.createReturnStatement(
+                    factory.createPropertyAccessExpression(
+                        descriptorName,
+                        factory.createIdentifier("value")
+                    )
+                )
+            ])
+        );
+    }
+
+    /**
+     * Creates a {@link GetAccessorDeclaration} that forwards its invocation to a {@link PropertyDescriptor} object.
+     * @param modifiers The modifiers for the resulting declaration.
+     * @param name The name for the resulting declaration.
+     * @param descriptorName The name of the descriptor variable.
+     */
+    function createGetAccessorDescriptorForwarder(modifiers: ModifiersArray | undefined, name: PropertyName, descriptorName: Identifier) {
+        // strip off all but the `static` modifier
+        modifiers = visitNodes(modifiers, node => isStaticModifier(node) ? node : undefined, isModifier);
+        return factory.createGetAccessorDeclaration(
+            modifiers,
+            name,
+            [],
+            /*type*/ undefined,
+            factory.createBlock([
+                factory.createReturnStatement(
+                    factory.createFunctionCallCall(
+                        factory.createPropertyAccessExpression(
+                            descriptorName,
+                            factory.createIdentifier("get")
+                        ),
+                        factory.createThis(),
+                        []
+                    )
+                )
+            ])
+        );
+    }
+
+    /**
+     * Creates a {@link SetAccessorDeclaration} that forwards its invocation to a {@link PropertyDescriptor} object.
+     * @param modifiers The modifiers for the resulting declaration.
+     * @param name The name for the resulting declaration.
+     * @param descriptorName The name of the descriptor variable.
+     */
+    function createSetAccessorDescriptorForwarder(modifiers: ModifiersArray | undefined, name: PropertyName, descriptorName: Identifier) {
+        // strip off all but the `static` modifier
+        modifiers = visitNodes(modifiers, node => isStaticModifier(node) ? node : undefined, isModifier);
+        return factory.createSetAccessorDeclaration(
+            modifiers,
+            name,
+            [factory.createParameterDeclaration(
+                /*modifiers*/ undefined,
+                /*dotDotDotToken*/ undefined,
+                "value"
+            )],
+            factory.createBlock([
+                factory.createReturnStatement(
+                    factory.createFunctionCallCall(
+                        factory.createPropertyAccessExpression(
+                            descriptorName,
+                            factory.createIdentifier("set")
+                        ),
+                        factory.createThis(),
+                        [factory.createIdentifier("value")]
+                    )
+                )
+            ])
+        );
+    }
+
+    function getAssignedNameOfIdentifier(name: Identifier, initializer: Expression) {
+        const originalClass = getOriginalNode(initializer, isClassLike);
+        return originalClass && !originalClass.name && hasSyntacticModifier(originalClass, ModifierFlags.Default) ?
+            factory.createStringLiteral("default") :
+            factory.createStringLiteralFromNode(name);
+    }
+}
diff --git a/src/compiler/transformers/legacyDecorators.ts b/src/compiler/transformers/legacyDecorators.ts
index 86d2d0ea10cd9..f3f19a528aceb 100644
--- a/src/compiler/transformers/legacyDecorators.ts
+++ b/src/compiler/transformers/legacyDecorators.ts
@@ -1,4 +1,5 @@
 import {
+    __String,
     addEmitHelpers,
     addRange,
     AllDecorators,
@@ -28,13 +29,14 @@ import {
     getEmitFlags,
     getEmitScriptTarget,
     getOriginalNodeId,
+    groupBy,
     hasAccessorModifier,
-    hasDecorators,
     hasSyntacticModifier,
     Identifier,
     idText,
     isBindingName,
     isBlock,
+    isCallToHelper,
     isClassElement,
     isComputedPropertyName,
     isDecorator,
@@ -147,9 +149,11 @@ export function transformLegacyDecorators(context: TransformationContext): (x: S
     }
 
     function visitClassDeclaration(node: ClassDeclaration): VisitResult<Statement> {
-        if (!(classOrConstructorParameterIsDecorated(node) || childIsDecorated(node))) return visitEachChild(node, visitor, context);
+        if (!(classOrConstructorParameterIsDecorated(/*legacyDecorators*/ true, node) || childIsDecorated(/*legacyDecorators*/ true, node))) {
+            return visitEachChild(node, visitor, context);
+        }
 
-        const statements = hasDecorators(node) ?
+        const statements = classOrConstructorParameterIsDecorated(/*useLegacyDecorators*/ true, node) ?
             transformClassDeclarationWithClassDecorators(node, node.name) :
             transformClassDeclarationWithoutClassDecorators(node, node.name);
 
@@ -173,7 +177,7 @@ export function transformLegacyDecorators(context: TransformationContext): (x: S
     function hasClassElementWithDecoratorContainingPrivateIdentifierInExpression(node: ClassDeclaration) {
         for (const member of node.members) {
             if (!canHaveDecorators(member)) continue;
-            const allDecorators = getAllDecoratorsOfClassElement(member, node);
+            const allDecorators = getAllDecoratorsOfClassElement(member, node, /*useLegacyDecorators*/ true);
             if (some(allDecorators?.decorators, decoratorContainsPrivateIdentifierInExpression)) return true;
             if (some(allDecorators?.parameters, parameterDecoratorsContainPrivateIdentifierInExpression)) return true;
         }
@@ -337,7 +341,7 @@ export function transformLegacyDecorators(context: TransformationContext): (x: S
 
         const classExpression = factory.createClassExpression(
             /*modifiers*/ undefined,
-            name,
+            name && isGeneratedIdentifier(name) ? undefined : name,
             /*typeParameters*/ undefined,
             heritageClauses,
             members);
@@ -469,6 +473,10 @@ export function transformLegacyDecorators(context: TransformationContext): (x: S
         return updated;
     }
 
+    function isSyntheticMetadataDecorator(node: Decorator) {
+        return isCallToHelper(node.expression, "___metadata" as __String);
+    }
+
     /**
      * Transforms all of the decorators for a declaration into an array of expressions.
      *
@@ -479,9 +487,12 @@ export function transformLegacyDecorators(context: TransformationContext): (x: S
             return undefined;
         }
 
+        // ensure that metadata decorators are last
+        const { false: decorators, true: metadata } = groupBy(allDecorators.decorators, isSyntheticMetadataDecorator);
         const decoratorExpressions: Expression[] = [];
-        addRange(decoratorExpressions, map(allDecorators.decorators, transformDecorator));
+        addRange(decoratorExpressions, map(decorators, transformDecorator));
         addRange(decoratorExpressions, flatMap(allDecorators.parameters, transformDecoratorsOfParameter));
+        addRange(decoratorExpressions, map(metadata, transformDecorator));
         return decoratorExpressions;
     }
 
@@ -504,7 +515,7 @@ export function transformLegacyDecorators(context: TransformationContext): (x: S
      * @param member The class member.
      */
     function isDecoratedClassElement(member: ClassElement, isStaticElement: boolean, parent: ClassLikeDeclaration) {
-        return nodeOrChildIsDecorated(member, parent)
+        return nodeOrChildIsDecorated(/*legacyDecorators*/ true, member, parent)
             && isStaticElement === isStatic(member);
     }
 
@@ -544,7 +555,7 @@ export function transformLegacyDecorators(context: TransformationContext): (x: S
      * @param member The class member.
      */
     function generateClassElementDecorationExpression(node: ClassExpression | ClassDeclaration, member: ClassElement) {
-        const allDecorators = getAllDecoratorsOfClassElement(member, node);
+        const allDecorators = getAllDecoratorsOfClassElement(member, node, /*useLegacyDecorators*/ true);
         const decoratorExpressions = transformAllDecoratorsOfDeclaration(allDecorators);
         if (!decoratorExpressions) {
             return undefined;
diff --git a/src/compiler/transformers/module/module.ts b/src/compiler/transformers/module/module.ts
index cdcb78401c126..311dcfe85a574 100644
--- a/src/compiler/transformers/module/module.ts
+++ b/src/compiler/transformers/module/module.ts
@@ -1,7 +1,7 @@
 import {
-    addEmitFlags,
     addEmitHelper,
     addEmitHelpers,
+    addInternalEmitFlags,
     addRange,
     append,
     ArrowFunction,
@@ -41,6 +41,7 @@ import {
     getExternalModuleNameLiteral,
     getImportNeedsImportDefaultHelper,
     getImportNeedsImportStarHelper,
+    getInternalEmitFlags,
     getLocalNameForExternalImport,
     getNamespaceDeclarationNode,
     getNodeId,
@@ -56,6 +57,7 @@ import {
     ImportEqualsDeclaration,
     InitializedVariableDeclaration,
     insertStatementsAfterStandardPrologue,
+    InternalEmitFlags,
     isArrayLiteralExpression,
     isArrowFunction,
     isAssignmentOperator,
@@ -1034,7 +1036,7 @@ export function transformModule(context: TransformationContext): (x: SourceFile
     }
 
     function getHelperExpressionForExport(node: ExportDeclaration, innerExpr: Expression) {
-        if (!getESModuleInterop(compilerOptions) || getEmitFlags(node) & EmitFlags.NeverApplyImportHelper) {
+        if (!getESModuleInterop(compilerOptions) || getInternalEmitFlags(node) & InternalEmitFlags.NeverApplyImportHelper) {
             return innerExpr;
         }
         if (getExportNeedsImportStarHelper(node)) {
@@ -1044,7 +1046,7 @@ export function transformModule(context: TransformationContext): (x: SourceFile
     }
 
     function getHelperExpressionForImport(node: ImportDeclaration, innerExpr: Expression) {
-        if (!getESModuleInterop(compilerOptions) || getEmitFlags(node) & EmitFlags.NeverApplyImportHelper) {
+        if (!getESModuleInterop(compilerOptions) || getInternalEmitFlags(node) & InternalEmitFlags.NeverApplyImportHelper) {
             return innerExpr;
         }
         if (getImportNeedsImportStarHelper(node)) {
@@ -1305,7 +1307,7 @@ export function transformModule(context: TransformationContext): (x: SourceFile
                 else {
                     const exportNeedsImportDefault =
                         !!getESModuleInterop(compilerOptions) &&
-                        !(getEmitFlags(node) & EmitFlags.NeverApplyImportHelper) &&
+                        !(getInternalEmitFlags(node) & InternalEmitFlags.NeverApplyImportHelper) &&
                         idText(specifier.propertyName || specifier.name) === "default";
                     const exportedValue = factory.createPropertyAccessExpression(
                         exportNeedsImportDefault ? emitHelpers().createImportDefaultHelper(generatedName) : generatedName,
@@ -1485,11 +1487,30 @@ export function transformModule(context: TransformationContext): (x: SourceFile
             // If we're exporting these variables, then these just become assignments to 'exports.x'.
             for (const variable of node.declarationList.declarations) {
                 if (isIdentifier(variable.name) && isLocalName(variable.name)) {
+                    // A "local name" generally means a variable declaration that *shouldn't* be
+                    // converted to `exports.x = ...`, even if the declaration is exported. This
+                    // usually indicates a class or function declaration that was converted into
+                    // a variable declaration, as most references to the declaration will remain
+                    // untransformed (i.e., `new C` rather than `new exports.C`). In these cases,
+                    // an `export { x }` declaration will follow.
                     if (!modifiers) {
                         modifiers = visitNodes(node.modifiers, modifierVisitor, isModifier);
                     }
 
-                    variables = append(variables, variable);
+                    if (variable.initializer) {
+                        const updatedVariable = factory.updateVariableDeclaration(
+                            variable,
+                            variable.name,
+                            /*exclamationToken*/ undefined,
+                            /*type*/ undefined,
+                            createExportExpression(
+                                variable.name,
+                                visitNode(variable.initializer, visitor, isExpression)));
+                        variables = append(variables, updatedVariable);
+                    }
+                    else {
+                        variables = append(variables, variable);
+                    }
                 }
                 else if (variable.initializer) {
                     if (!isBindingPattern(variable.name) && (isArrowFunction(variable.initializer) || isFunctionExpression(variable.initializer) || isClassExpression(variable.initializer))) {
@@ -2022,13 +2043,13 @@ export function transformModule(context: TransformationContext): (x: SourceFile
             const expression = substituteExpressionIdentifier(node.expression);
             noSubstitution[getNodeId(expression)] = true;
             if (!isIdentifier(expression) && !(getEmitFlags(node.expression) & EmitFlags.HelperName)) {
-                return addEmitFlags(
+                return addInternalEmitFlags(
                     factory.updateCallExpression(node,
                         expression,
                         /*typeArguments*/ undefined,
                         node.arguments
                     ),
-                    EmitFlags.IndirectCall
+                    InternalEmitFlags.IndirectCall
                 );
 
             }
@@ -2041,13 +2062,13 @@ export function transformModule(context: TransformationContext): (x: SourceFile
             const tag = substituteExpressionIdentifier(node.tag);
             noSubstitution[getNodeId(tag)] = true;
             if (!isIdentifier(tag) && !(getEmitFlags(node.tag) & EmitFlags.HelperName)) {
-                return addEmitFlags(
+                return addInternalEmitFlags(
                     factory.updateTaggedTemplateExpression(node,
                         tag,
                         /*typeArguments*/ undefined,
                         node.template
                     ),
-                    EmitFlags.IndirectCall
+                    InternalEmitFlags.IndirectCall
                 );
             }
         }
diff --git a/src/compiler/transformers/ts.ts b/src/compiler/transformers/ts.ts
index d47ada78383fb..e00a3187b66c7 100644
--- a/src/compiler/transformers/ts.ts
+++ b/src/compiler/transformers/ts.ts
@@ -5,7 +5,6 @@ import {
     addEmitHelpers,
     addRange,
     addSyntheticTrailingComment,
-    AllDecorators,
     append,
     ArrowFunction,
     AssertionExpression,
@@ -16,6 +15,7 @@ import {
     childIsDecorated,
     ClassDeclaration,
     ClassElement,
+    classElementOrClassElementParameterIsDecorated,
     ClassExpression,
     ClassLikeDeclaration,
     classOrConstructorParameterIsDecorated,
@@ -30,7 +30,6 @@ import {
     Declaration,
     Decorator,
     ElementAccessExpression,
-    elideNodes,
     EmitFlags,
     EmitHint,
     EntityName,
@@ -43,16 +42,12 @@ import {
     ExpressionWithTypeArguments,
     filter,
     findSuperStatementIndex,
-    firstOrUndefined,
-    flatMap,
     flattenDestructuringAssignment,
     FlattenLevel,
     FunctionDeclaration,
     FunctionExpression,
     FunctionLikeDeclaration,
     GetAccessorDeclaration,
-    getAllDecoratorsOfClass,
-    getAllDecoratorsOfClassElement,
     getEffectiveBaseTypeNode,
     getEmitFlags,
     getEmitModuleKind,
@@ -77,6 +72,7 @@ import {
     ImportSpecifier,
     InitializedVariableDeclaration,
     insertStatementsAfterStandardPrologue,
+    InternalEmitFlags,
     isAccessExpression,
     isArray,
     isAssertionExpression,
@@ -88,6 +84,7 @@ import {
     isDecorator,
     isElementAccessExpression,
     isEnumConst,
+    isExportOrDefaultModifier,
     isExportSpecifier,
     isExpression,
     isExternalModule,
@@ -122,7 +119,6 @@ import {
     isTemplateLiteral,
     JsxOpeningElement,
     JsxSelfClosingElement,
-    lastOrUndefined,
     LeftHandSideExpression,
     map,
     mapDefined,
@@ -142,6 +138,7 @@ import {
     NamespaceExport,
     NewExpression,
     Node,
+    NodeArray,
     NodeFlags,
     nodeIsMissing,
     NonNullExpression,
@@ -162,6 +159,7 @@ import {
     setCommentRange,
     setConstantValue,
     setEmitFlags,
+    setInternalEmitFlags,
     setOriginalNode,
     setParent,
     setSourceMapRange,
@@ -170,27 +168,26 @@ import {
     setTextRange,
     setTextRangeEnd,
     setTextRangePos,
-    setTextRangePosEnd,
     setTypeNode,
     ShorthandPropertyAssignment,
     shouldPreserveConstEnums,
-    singleOrMany,
     skipOuterExpressions,
     skipPartiallyEmittedExpressions,
     skipTrivia,
+    skipWhile,
     some,
     SourceFile,
     startOnNewLine,
     Statement,
     SyntaxKind,
     TaggedTemplateExpression,
+    takeWhile,
     TextRange,
     TransformationContext,
     TransformFlags,
     UnderscoreEscapedMap,
     VariableDeclaration,
     VariableStatement,
-    visitArray,
     visitEachChild,
     visitFunctionBody,
     visitLexicalEnvironment,
@@ -215,16 +212,14 @@ const enum TypeScriptSubstitutionFlags {
 const enum ClassFacts {
     None = 0,
     HasStaticInitializedProperties = 1 << 0,
-    HasConstructorDecorators = 1 << 1,
+    HasClassOrConstructorParameterDecorators = 1 << 1,
     HasMemberDecorators = 1 << 2,
     IsExportOfNamespace = 1 << 3,
     IsNamedExternalExport = 1 << 4,
     IsDefaultExternalExport = 1 << 5,
     IsDerivedClass = 1 << 6,
-    UseImmediatelyInvokedFunctionExpression = 1 << 7,
 
-    HasAnyDecorators = HasConstructorDecorators | HasMemberDecorators,
-    NeedsName = HasStaticInitializedProperties | HasMemberDecorators,
+    HasAnyDecorators = HasClassOrConstructorParameterDecorators | HasMemberDecorators,
     MayNeedImmediatelyInvokedFunctionExpression = HasAnyDecorators | HasStaticInitializedProperties,
     IsExported = IsExportOfNamespace | IsDefaultExternalExport | IsNamedExternalExport,
 }
@@ -244,6 +239,7 @@ export function transformTypeScript(context: TransformationContext) {
     const compilerOptions = context.getCompilerOptions();
     const languageVersion = getEmitScriptTarget(compilerOptions);
     const moduleKind = getEmitModuleKind(compilerOptions);
+    const legacyDecorators = !!compilerOptions.experimentalDecorators;
     const typeSerializer = compilerOptions.emitDecoratorMetadata ? createRuntimeTypeSerializer(context) : undefined;
 
     // Save the previous transformation hooks.
@@ -563,6 +559,14 @@ export function transformTypeScript(context: TransformationContext) {
         }
     }
 
+    function decoratorElidingVisitor(node: Node): VisitResult<Node | undefined> {
+        return isDecorator(node) ? undefined : visitor(node);
+    }
+
+    function modifierElidingVisitor(node: Node): VisitResult<Node | undefined> {
+        return isModifier(node) ? undefined : visitor(node);
+    }
+
     function modifierVisitor(node: Node): VisitResult<Node | undefined> {
         if (isDecorator(node)) return undefined;
         if (modifierToFlag(node.kind) & ModifierFlags.TypeScriptModifier) {
@@ -794,17 +798,16 @@ export function transformTypeScript(context: TransformationContext) {
         );
     }
 
-    function getClassFacts(node: ClassDeclaration, staticProperties: readonly PropertyDeclaration[]) {
+    function getClassFacts(node: ClassDeclaration) {
         let facts = ClassFacts.None;
-        if (some(staticProperties)) facts |= ClassFacts.HasStaticInitializedProperties;
+        if (some(getProperties(node, /*requireInitialized*/ true, /*isStatic*/ true))) facts |= ClassFacts.HasStaticInitializedProperties;
         const extendsClauseElement = getEffectiveBaseTypeNode(node);
         if (extendsClauseElement && skipOuterExpressions(extendsClauseElement.expression).kind !== SyntaxKind.NullKeyword) facts |= ClassFacts.IsDerivedClass;
-        if (classOrConstructorParameterIsDecorated(node)) facts |= ClassFacts.HasConstructorDecorators;
-        if (childIsDecorated(node)) facts |= ClassFacts.HasMemberDecorators;
+        if (classOrConstructorParameterIsDecorated(legacyDecorators, node)) facts |= ClassFacts.HasClassOrConstructorParameterDecorators;
+        if (childIsDecorated(legacyDecorators, node)) facts |= ClassFacts.HasMemberDecorators;
         if (isExportOfNamespace(node)) facts |= ClassFacts.IsExportOfNamespace;
         else if (isDefaultExternalModuleExport(node)) facts |= ClassFacts.IsDefaultExternalExport;
         else if (isNamedExternalModuleExport(node)) facts |= ClassFacts.IsNamedExternalExport;
-        if (languageVersion <= ScriptTarget.ES5 && (facts & ClassFacts.MayNeedImmediatelyInvokedFunctionExpression)) facts |= ClassFacts.UseImmediatelyInvokedFunctionExpression;
         return facts;
     }
 
@@ -820,7 +823,13 @@ export function transformTypeScript(context: TransformationContext) {
     }
 
     function visitClassDeclaration(node: ClassDeclaration): VisitResult<Statement> {
-        if (!isClassLikeDeclarationWithTypeScriptSyntax(node) && !(currentNamespace && hasSyntacticModifier(node, ModifierFlags.Export))) {
+        const facts = getClassFacts(node);
+        const promoteToIIFE = languageVersion <= ScriptTarget.ES5 &&
+            !!(facts & ClassFacts.MayNeedImmediatelyInvokedFunctionExpression);
+
+        if (!isClassLikeDeclarationWithTypeScriptSyntax(node) &&
+            !classOrConstructorParameterIsDecorated(legacyDecorators, node) &&
+            !isExportOfNamespace(node)) {
             return factory.updateClassDeclaration(
                 node,
                 visitNodes(node.modifiers, modifierVisitor, isModifier),
@@ -831,28 +840,42 @@ export function transformTypeScript(context: TransformationContext) {
             );
         }
 
-        const staticProperties = getProperties(node, /*requireInitializer*/ true, /*isStatic*/ true);
-        const facts = getClassFacts(node, staticProperties);
-
-        if (facts & ClassFacts.UseImmediatelyInvokedFunctionExpression) {
+        if (promoteToIIFE) {
             context.startLexicalEnvironment();
         }
 
-        const name = node.name || (facts & ClassFacts.NeedsName ? factory.getGeneratedNameForNode(node) : undefined);
-        const allDecorators = getAllDecoratorsOfClass(node);
-        const decorators = transformAllDecoratorsOfDeclaration(node, node, allDecorators);
+        const moveModifiers =
+            promoteToIIFE ||
+            facts & ClassFacts.IsExportOfNamespace ||
+            facts & ClassFacts.HasClassOrConstructorParameterDecorators && legacyDecorators ||
+            facts & ClassFacts.HasStaticInitializedProperties;
 
-        // we do not emit modifiers on the declaration if we are emitting an IIFE
-        const modifiers = !(facts & ClassFacts.UseImmediatelyInvokedFunctionExpression)
-            ? visitNodes(node.modifiers, modifierVisitor, isModifier)
-            : elideNodes(factory, node.modifiers); // preserve positions, if available
+        // elide modifiers on the declaration if we are emitting an IIFE or the class is
+        // a namespace export
+        let modifiers = moveModifiers ?
+            visitNodes(node.modifiers, modifierElidingVisitor, isModifierLike) :
+            visitNodes(node.modifiers, visitor, isModifierLike);
+
+        // inject metadata only if the class is decorated
+        if (facts & ClassFacts.HasClassOrConstructorParameterDecorators) {
+            modifiers = injectClassTypeMetadata(modifiers, node);
+        }
+
+        const needsName =
+            moveModifiers && !node.name ||
+            facts & ClassFacts.HasMemberDecorators ||
+            facts & ClassFacts.HasStaticInitializedProperties;
+
+        const name = needsName ?
+            node.name ?? factory.getGeneratedNameForNode(node) :
+            node.name;
 
         //  ${modifiers} class ${name} ${heritageClauses} {
         //      ${members}
         //  }
-        const classStatement = factory.updateClassDeclaration(
+        const classDeclaration = factory.updateClassDeclaration(
             node,
-            concatenate<ModifierLike>(decorators, modifiers),
+            modifiers,
             name,
             /*typeParameters*/ undefined,
             visitNodes(node.heritageClauses, visitor, isHeritageClause),
@@ -866,11 +889,10 @@ export function transformTypeScript(context: TransformationContext) {
             emitFlags |= EmitFlags.NoTrailingSourceMap;
         }
 
-        setEmitFlags(classStatement, emitFlags);
+        setEmitFlags(classDeclaration, emitFlags);
 
-        let statements: Statement[] = [classStatement];
-
-        if (facts & ClassFacts.UseImmediatelyInvokedFunctionExpression) {
+        let statement: VariableStatement | ClassDeclaration;
+        if (promoteToIIFE) {
             // When we emit a TypeScript class down to ES5, we must wrap it in an IIFE so that the
             // 'es2015' transformer can properly nest static initializers and decorators. The result
             // looks something like:
@@ -882,6 +904,7 @@ export function transformTypeScript(context: TransformationContext) {
             //      return C;
             //  }();
             //
+            const statements: Statement[] = [classDeclaration];
             const closingBraceLocation = createTokenRange(skipTrivia(currentSourceFile.text, node.members.end), SyntaxKind.CloseBraceToken);
             const localName = factory.getInternalName(node);
 
@@ -891,18 +914,24 @@ export function transformTypeScript(context: TransformationContext) {
             setTextRangeEnd(outer, closingBraceLocation.end);
             setEmitFlags(outer, EmitFlags.NoComments);
 
-            const statement = factory.createReturnStatement(outer);
-            setTextRangePos(statement, closingBraceLocation.pos);
-            setEmitFlags(statement, EmitFlags.NoComments | EmitFlags.NoTokenSourceMaps);
-            statements.push(statement);
+            const returnStatement = factory.createReturnStatement(outer);
+            setTextRangePos(returnStatement, closingBraceLocation.pos);
+            setEmitFlags(returnStatement, EmitFlags.NoComments | EmitFlags.NoTokenSourceMaps);
+            statements.push(returnStatement);
 
             insertStatementsAfterStandardPrologue(statements, context.endLexicalEnvironment());
 
             const iife = factory.createImmediatelyInvokedArrowFunction(statements);
-            setEmitFlags(iife, EmitFlags.TypeScriptClassWrapper);
+            setInternalEmitFlags(iife, InternalEmitFlags.TypeScriptClassWrapper);
+
+            //  export let C = (() => { ... })();
+            const modifiers = facts & ClassFacts.IsNamedExternalExport ?
+                factory.createModifiersFromModifierFlags(ModifierFlags.Export) :
+                undefined;
 
+            //  let C = (() => { ... })();
             const varStatement = factory.createVariableStatement(
-                /*modifiers*/ undefined,
+                modifiers,
                 factory.createVariableDeclarationList([
                     factory.createVariableDeclaration(
                         factory.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ false),
@@ -910,52 +939,62 @@ export function transformTypeScript(context: TransformationContext) {
                         /*type*/ undefined,
                         iife
                     )
-                ])
+                ], NodeFlags.Let)
             );
 
             setOriginalNode(varStatement, node);
             setCommentRange(varStatement, node);
             setSourceMapRange(varStatement, moveRangePastDecorators(node));
             startOnNewLine(varStatement);
-            statements = [varStatement];
+            statement = varStatement;
         }
-
-        // If the class is exported as part of a TypeScript namespace, emit the namespace export.
-        // Otherwise, if the class was exported at the top level and was decorated, emit an export
-        // declaration or export default for the class.
-        if (facts & ClassFacts.IsExportOfNamespace) {
-            addExportMemberAssignment(statements, node);
+        else {
+            statement = classDeclaration;
         }
-        else if (facts & ClassFacts.UseImmediatelyInvokedFunctionExpression || facts & ClassFacts.HasConstructorDecorators) {
+
+        if (moveModifiers) {
+            if (facts & ClassFacts.IsExportOfNamespace) {
+                return demarcateMultiStatementExport(
+                    statement,
+                    createExportMemberAssignmentStatement(node));
+            }
             if (facts & ClassFacts.IsDefaultExternalExport) {
-                statements.push(factory.createExportDefault(factory.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true)));
+                return demarcateMultiStatementExport(
+                    statement,
+                    factory.createExportDefault(factory.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true)));
             }
-            else if (facts & ClassFacts.IsNamedExternalExport) {
-                statements.push(factory.createExternalModuleExport(factory.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true)));
+            if (facts & ClassFacts.IsNamedExternalExport && !promoteToIIFE) {
+                return demarcateMultiStatementExport(
+                    statement,
+                    factory.createExternalModuleExport(factory.getLocalName(node, /*allowComments*/ false, /*allowSourceMaps*/ true)));
             }
         }
 
-        if (statements.length > 1) {
-            // Add a DeclarationMarker as a marker for the end of the declaration
-            statements.push(factory.createEndOfDeclarationMarker(node));
-            setEmitFlags(classStatement, getEmitFlags(classStatement) | EmitFlags.HasEndOfDeclarationMarker);
-        }
+        return statement;
+    }
 
-        return singleOrMany(statements);
+    function demarcateMultiStatementExport(declarationStatement: Statement, exportStatement: Statement) {
+        addEmitFlags(declarationStatement, EmitFlags.HasEndOfDeclarationMarker);
+        return [
+            declarationStatement,
+            exportStatement,
+            factory.createEndOfDeclarationMarker(declarationStatement)
+        ];
     }
 
     function visitClassExpression(node: ClassExpression): Expression {
-        const allDecorators = getAllDecoratorsOfClass(node);
-        const decorators = transformAllDecoratorsOfDeclaration(node, node, allDecorators);
+        let modifiers = visitNodes(node.modifiers, modifierElidingVisitor, isModifierLike);
+        if (classOrConstructorParameterIsDecorated(legacyDecorators, node)) {
+            modifiers = injectClassTypeMetadata(modifiers, node);
+        }
+
         return factory.updateClassExpression(
             node,
-            decorators,
+            modifiers,
             node.name,
             /*typeParameters*/ undefined,
             visitNodes(node.heritageClauses, visitor, isHeritageClause),
-            isClassLikeDeclarationWithTypeScriptSyntax(node) ?
-                transformClassMembers(node) :
-                visitNodes(node.members, getClassElementVisitor(node), isClassElement)
+            transformClassMembers(node)
         );
     }
 
@@ -965,73 +1004,60 @@ export function transformTypeScript(context: TransformationContext) {
      * @param node The current class.
      */
     function transformClassMembers(node: ClassDeclaration | ClassExpression) {
-        const members: ClassElement[] = [];
+        const members = visitNodes(node.members, getClassElementVisitor(node), isClassElement);
+
+        let newMembers: ClassElement[] | undefined;
         const constructor = getFirstConstructorWithBody(node);
         const parametersWithPropertyAssignments = constructor &&
-            filter(constructor.parameters, p => isParameterPropertyDeclaration(p, constructor));
+            filter(constructor.parameters, (p): p is ParameterPropertyDeclaration => isParameterPropertyDeclaration(p, constructor));
 
         if (parametersWithPropertyAssignments) {
             for (const parameter of parametersWithPropertyAssignments) {
-                if (isIdentifier(parameter.name)) {
-                    members.push(setOriginalNode(factory.createPropertyDeclaration(
-                        /*modifiers*/ undefined,
-                        parameter.name,
-                        /*questionOrExclamationToken*/ undefined,
-                        /*type*/ undefined,
-                        /*initializer*/ undefined), parameter));
-                }
+                const parameterProperty = factory.createPropertyDeclaration(
+                    /*modifiers*/ undefined,
+                    parameter.name,
+                    /*questionOrExclamationToken*/ undefined,
+                    /*type*/ undefined,
+                    /*initializer*/ undefined);
+                setOriginalNode(parameterProperty, parameter);
+                newMembers = append(newMembers, parameterProperty);
             }
         }
 
-        addRange(members, visitNodes(node.members, getClassElementVisitor(node), isClassElement));
-        return setTextRange(factory.createNodeArray(members), /*location*/ node.members);
+        if (newMembers) {
+            newMembers = addRange(newMembers, members);
+            return setTextRange(factory.createNodeArray(newMembers), /*location*/ node.members);
+        }
+
+        return members;
     }
 
-    /**
-     * Transforms all of the decorators for a declaration into an array of expressions.
-     *
-     * @param node The declaration node.
-     * @param allDecorators An object containing all of the decorators for the declaration.
-     */
-    function transformAllDecoratorsOfDeclaration(node: Declaration, container: ClassLikeDeclaration, allDecorators: AllDecorators | undefined) {
-        if (!allDecorators) {
-            return undefined;
+    function injectClassTypeMetadata(modifiers: NodeArray<ModifierLike> | undefined, node: ClassLikeDeclaration) {
+        const metadata = getTypeMetadata(node, node);
+        if (some(metadata)) {
+            const modifiersArray: ModifierLike[] = [];
+            addRange(modifiersArray, takeWhile(modifiers, isExportOrDefaultModifier));
+            addRange(modifiersArray, filter(modifiers, isDecorator));
+            addRange(modifiersArray, metadata);
+            addRange(modifiersArray, filter(skipWhile(modifiers, isExportOrDefaultModifier), isModifier));
+            modifiers = setTextRange(factory.createNodeArray(modifiersArray), modifiers);
         }
 
-        const decorators = visitArray(allDecorators.decorators, visitor, isDecorator);
-        const parameterDecorators = flatMap(allDecorators.parameters, transformDecoratorsOfParameter);
-        const metadataDecorators = some(decorators) || some(parameterDecorators) ? getTypeMetadata(node, container) : undefined;
-        const result = factory.createNodeArray(concatenate(concatenate(decorators, parameterDecorators), metadataDecorators));
-        const pos = firstOrUndefined(allDecorators.decorators)?.pos ?? -1;
-        const end = lastOrUndefined(allDecorators.decorators)?.end ?? -1;
-        setTextRangePosEnd(result, pos, end);
-        return result;
+        return modifiers;
     }
 
-    /**
-     * Transforms the decorators of a parameter into decorators of the class/method.
-     *
-     * @param parameterDecorators The decorators for the parameter at the provided offset.
-     * @param parameterOffset The offset of the parameter.
-     */
-    function transformDecoratorsOfParameter(parameterDecorators: readonly Decorator[] | undefined, parameterOffset: number) {
-        if (parameterDecorators) {
-            const decorators: Decorator[] = [];
-            for (const parameterDecorator of parameterDecorators) {
-                const expression = visitNode(parameterDecorator.expression, visitor, isExpression);
-                Debug.assert(expression);
-                const helper = emitHelpers().createParamHelper(expression, parameterOffset);
-                setTextRange(helper, parameterDecorator.expression);
-                setEmitFlags(helper, EmitFlags.NoComments);
-
-                const decorator = factory.createDecorator(helper);
-                setSourceMapRange(decorator, parameterDecorator.expression);
-                setCommentRange(decorator, parameterDecorator.expression);
-                setEmitFlags(decorator, EmitFlags.NoComments);
-                decorators.push(decorator);
+    function injectClassElementTypeMetadata(modifiers: NodeArray<ModifierLike> | undefined, node: ClassElement, container: ClassLikeDeclaration | ObjectLiteralExpression) {
+        if (isClassLike(container) && classElementOrClassElementParameterIsDecorated(legacyDecorators, node, container)) {
+            const metadata = getTypeMetadata(node, container);
+            if (some(metadata)) {
+                const modifiersArray: ModifierLike[] = [];
+                addRange(modifiersArray, filter(modifiers, isDecorator));
+                addRange(modifiersArray, metadata);
+                addRange(modifiersArray, filter(modifiers, isModifier));
+                modifiers = setTextRange(factory.createNodeArray(modifiersArray), modifiers);
             }
-            return decorators;
         }
+        return modifiers;
     }
 
     /**
@@ -1040,6 +1066,8 @@ export function transformTypeScript(context: TransformationContext) {
      * @param node The declaration node.
      */
     function getTypeMetadata(node: Declaration, container: ClassLikeDeclaration) {
+        // Decorator metadata is not yet supported for ES decorators.
+        if (!legacyDecorators) return undefined;
         return USE_NEW_TYPE_METADATA_FORMAT ?
             getNewTypeMetadata(node, container) :
             getOldTypeMetadata(node, container);
@@ -1169,7 +1197,7 @@ export function transformTypeScript(context: TransformationContext) {
         // The names are used more than once when:
         //   - the property is non-static and its initializer is moved to the constructor (when there are parameter property assignments).
         //   - the property has a decorator.
-        if (isComputedPropertyName(name) && ((!hasStaticModifier(member) && currentClassHasParameterProperties) || hasDecorators(member))) {
+        if (isComputedPropertyName(name) && ((!hasStaticModifier(member) && currentClassHasParameterProperties) || hasDecorators(member) && legacyDecorators)) {
             const expression = visitNode(name.expression, visitor, isExpression);
             Debug.assert(expression);
             const innerExpression = skipPartiallyEmittedExpressions(expression);
@@ -1227,18 +1255,22 @@ export function transformTypeScript(context: TransformationContext) {
 
     function visitPropertyDeclaration(node: PropertyDeclaration, parent: ClassLikeDeclaration) {
         const isAmbient = node.flags & NodeFlags.Ambient || hasSyntacticModifier(node, ModifierFlags.Abstract);
-        if (isAmbient && !hasDecorators(node)) {
+        if (isAmbient && !(legacyDecorators && hasDecorators(node))) {
             return undefined;
         }
 
-        const allDecorators = getAllDecoratorsOfClassElement(node, parent);
-        const decorators = transformAllDecoratorsOfDeclaration(node, parent, allDecorators);
+        let modifiers = isClassLike(parent) ? !isAmbient ?
+            visitNodes(node.modifiers, visitor, isModifierLike) :
+            visitNodes(node.modifiers, modifierElidingVisitor, isModifierLike) :
+            visitNodes(node.modifiers, decoratorElidingVisitor, isModifierLike);
+
+        modifiers = injectClassElementTypeMetadata(modifiers, node, parent);
 
         // Preserve a `declare x` property with decorators to be handled by the decorators transform
         if (isAmbient) {
             return factory.updatePropertyDeclaration(
                 node,
-                concatenate<ModifierLike>(decorators, factory.createModifiersFromModifierFlags(ModifierFlags.Ambient)),
+                concatenate<ModifierLike>(modifiers, factory.createModifiersFromModifierFlags(ModifierFlags.Ambient)),
                 Debug.checkDefined(visitNode(node.name, visitor, isPropertyName)),
                 /*questionOrExclamationToken*/ undefined,
                 /*type*/ undefined,
@@ -1248,7 +1280,7 @@ export function transformTypeScript(context: TransformationContext) {
 
         return factory.updatePropertyDeclaration(
             node,
-            concatenate(decorators, visitNodes(node.modifiers, modifierVisitor, isModifierLike)),
+            modifiers,
             visitPropertyNameOfClassElement(node),
             /*questionOrExclamationToken*/ undefined,
             /*type*/ undefined,
@@ -1382,11 +1414,15 @@ export function transformTypeScript(context: TransformationContext) {
             return undefined;
         }
 
-        const allDecorators = isClassLike(parent) ? getAllDecoratorsOfClassElement(node, parent) : undefined;
-        const decorators = isClassLike(parent) ? transformAllDecoratorsOfDeclaration(node, parent, allDecorators) : undefined;
+        let modifiers = isClassLike(parent) ?
+            visitNodes(node.modifiers, visitor, isModifierLike) :
+            visitNodes(node.modifiers, decoratorElidingVisitor, isModifierLike);
+
+        modifiers = injectClassElementTypeMetadata(modifiers, node, parent);
+
         return factory.updateMethodDeclaration(
             node,
-            concatenate(decorators, visitNodes(node.modifiers, modifierVisitor, isModifierLike)),
+            modifiers,
             node.asteriskToken,
             visitPropertyNameOfClassElement(node),
             /*questionToken*/ undefined,
@@ -1416,13 +1452,15 @@ export function transformTypeScript(context: TransformationContext) {
             return undefined;
         }
 
-        const decorators = isClassLike(parent) ?
-            transformAllDecoratorsOfDeclaration(node, parent, getAllDecoratorsOfClassElement(node, parent)) :
-            undefined;
+        let modifiers = isClassLike(parent) ?
+            visitNodes(node.modifiers, visitor, isModifierLike) :
+            visitNodes(node.modifiers, decoratorElidingVisitor, isModifierLike);
+
+        modifiers = injectClassElementTypeMetadata(modifiers, node, parent);
 
         return factory.updateGetAccessorDeclaration(
             node,
-            concatenate(decorators, visitNodes(node.modifiers, modifierVisitor, isModifierLike)),
+            modifiers,
             visitPropertyNameOfClassElement(node),
             visitParameterList(node.parameters, visitor, context),
             /*type*/ undefined,
@@ -1439,13 +1477,15 @@ export function transformTypeScript(context: TransformationContext) {
             return undefined;
         }
 
-        const decorators = isClassLike(parent) ?
-            transformAllDecoratorsOfDeclaration(node, parent, getAllDecoratorsOfClassElement(node, parent)) :
-            undefined;
+        let modifiers = isClassLike(parent) ?
+            visitNodes(node.modifiers, visitor, isModifierLike) :
+            visitNodes(node.modifiers, decoratorElidingVisitor, isModifierLike);
+
+        modifiers = injectClassElementTypeMetadata(modifiers, node, parent);
 
         return factory.updateSetAccessorDeclaration(
             node,
-            concatenate(decorators, visitNodes(node.modifiers, modifierVisitor, isModifierLike)),
+            modifiers,
             visitPropertyNameOfClassElement(node),
             visitParameterList(node.parameters, visitor, context),
             visitFunctionBody(node.body, visitor, context) || factory.createBlock([])
@@ -1511,7 +1551,7 @@ export function transformTypeScript(context: TransformationContext) {
 
         const updated = factory.updateParameterDeclaration(
             node,
-            elideNodes(factory, node.modifiers), // preserve positions, if available
+            visitNodes(node.modifiers, node => isDecorator(node) ? visitor(node) : undefined, isModifierLike),
             node.dotDotDotToken,
             Debug.checkDefined(visitNode(node.name, visitor, isBindingName)),
             /*questionToken*/ undefined,
@@ -2449,7 +2489,7 @@ export function transformTypeScript(context: TransformationContext) {
             && hasSyntacticModifier(node, ModifierFlags.Default);
     }
 
-    function addExportMemberAssignment(statements: Statement[], node: ClassDeclaration | FunctionDeclaration) {
+    function createExportMemberAssignmentStatement(node: ClassDeclaration | FunctionDeclaration) {
         const expression = factory.createAssignment(
             factory.getExternalModuleOrNamespaceExportName(currentNamespaceContainerName, node, /*allowComments*/ false, /*allowSourceMaps*/ true),
             factory.getLocalName(node)
@@ -2458,7 +2498,11 @@ export function transformTypeScript(context: TransformationContext) {
 
         const statement = factory.createExpressionStatement(expression);
         setSourceMapRange(statement, createRange(-1, node.end));
-        statements.push(statement);
+        return statement;
+    }
+
+    function addExportMemberAssignment(statements: Statement[], node: ClassDeclaration | FunctionDeclaration) {
+        statements.push(createExportMemberAssignmentStatement(node));
     }
 
     function createNamespaceExport(exportName: Identifier, exportValue: Expression, location?: TextRange) {
diff --git a/src/compiler/transformers/utilities.ts b/src/compiler/transformers/utilities.ts
index 90ef9bffb7f9d..e6fd5c2346b02 100644
--- a/src/compiler/transformers/utilities.ts
+++ b/src/compiler/transformers/utilities.ts
@@ -29,6 +29,7 @@ import {
     getDecorators,
     getFirstConstructorWithBody,
     getNamespaceDeclarationNode,
+    getNodeForGeneratedName,
     getNodeId,
     getOriginalNode,
     hasDecorators,
@@ -47,6 +48,7 @@ import {
     isDefaultImport,
     isExpressionStatement,
     isGeneratedIdentifier,
+    isGeneratedPrivateIdentifier,
     isIdentifier,
     isKeyword,
     isMethodOrAccessor,
@@ -67,6 +69,7 @@ import {
     Node,
     NodeArray,
     parameterIsThisKeyword,
+    PrivateIdentifier,
     PrivateIdentifierAccessorDeclaration,
     PrivateIdentifierAutoAccessorPropertyDeclaration,
     PrivateIdentifierMethodDeclaration,
@@ -78,6 +81,7 @@ import {
     SuperCall,
     SyntaxKind,
     TransformationContext,
+    UnderscoreEscapedMap,
     VariableDeclaration,
     VariableStatement,
 } from "../_namespaces/ts";
@@ -552,10 +556,13 @@ export function getAllDecoratorsOfClass(node: ClassLikeDeclaration): AllDecorato
  *
  * @internal
  */
-export function getAllDecoratorsOfClassElement(member: ClassElement, parent: ClassLikeDeclaration): AllDecorators | undefined {
+export function getAllDecoratorsOfClassElement(member: ClassElement, parent: ClassLikeDeclaration, useLegacyDecorators: boolean): AllDecorators | undefined {
     switch (member.kind) {
         case SyntaxKind.GetAccessor:
         case SyntaxKind.SetAccessor:
+            if (!useLegacyDecorators) {
+                return getAllDecoratorsOfMethod(member as AccessorDeclaration);
+            }
             return getAllDecoratorsOfAccessors(member as AccessorDeclaration, parent);
 
         case SyntaxKind.MethodDeclaration:
@@ -609,7 +616,7 @@ function getAllDecoratorsOfAccessors(accessor: AccessorDeclaration, parent: Clas
  *
  * @param method The class method member.
  */
-function getAllDecoratorsOfMethod(method: MethodDeclaration): AllDecorators | undefined {
+function getAllDecoratorsOfMethod(method: MethodDeclaration | AccessorDeclaration): AllDecorators | undefined {
     if (!method.body) {
         return undefined;
     }
@@ -637,3 +644,80 @@ function getAllDecoratorsOfProperty(property: PropertyDeclaration): AllDecorator
 
     return { decorators };
 }
+
+/** @internal */
+export interface PrivateEnvironment<TData, TEntry> {
+    readonly data: TData;
+
+    /**
+     * A mapping of private names to information needed for transformation.
+     */
+    identifiers?: UnderscoreEscapedMap<TEntry>;
+
+    /**
+     * A mapping of generated private names to information needed for transformation.
+     */
+    generatedIdentifiers?: Map<Node, TEntry>;
+}
+
+/** @internal */
+export interface LexicalEnvironment<in out TEnvData, TPrivateEnvData, TPrivateEntry> {
+    data: TEnvData;
+    privateEnv?: PrivateEnvironment<TPrivateEnvData, TPrivateEntry>;
+    readonly previous: LexicalEnvironment<TEnvData, TPrivateEnvData, TPrivateEntry> | undefined;
+}
+
+/** @internal */
+export function walkUpLexicalEnvironments<TEnvData, TPrivateEnvData, TPrivateEntry, U>(
+    env: LexicalEnvironment<TEnvData, TPrivateEnvData, TPrivateEntry> | undefined,
+    cb: (env: LexicalEnvironment<TEnvData, TPrivateEnvData, TPrivateEntry>) => U
+): U | undefined {
+    while (env) {
+        const result = cb(env);
+        if (result !== undefined) return result;
+        env = env.previous;
+    }
+}
+
+/** @internal */
+export function newPrivateEnvironment<TData, TEntry>(data: TData): PrivateEnvironment<TData, TEntry> {
+    return { data };
+}
+
+/** @internal */
+export function getPrivateIdentifier<TData, TEntry>(
+    privateEnv: PrivateEnvironment<TData, TEntry> | undefined,
+    name: PrivateIdentifier
+) {
+    return isGeneratedPrivateIdentifier(name) ?
+        privateEnv?.generatedIdentifiers?.get(getNodeForGeneratedName(name)) :
+        privateEnv?.identifiers?.get(name.escapedText);
+}
+
+/** @internal */
+export function setPrivateIdentifier<TData, TEntry>(
+    privateEnv: PrivateEnvironment<TData, TEntry>,
+    name: PrivateIdentifier,
+    entry: TEntry
+) {
+    if (isGeneratedPrivateIdentifier(name)) {
+        privateEnv.generatedIdentifiers ??= new Map();
+        privateEnv.generatedIdentifiers.set(getNodeForGeneratedName(name), entry);
+    }
+    else {
+        privateEnv.identifiers ??= new Map();
+        privateEnv.identifiers.set(name.escapedText, entry);
+    }
+}
+
+/** @internal */
+export function accessPrivateIdentifier<
+    TEnvData,
+    TPrivateEnvData,
+    TPrivateEntry,
+>(
+    env: LexicalEnvironment<TEnvData, TPrivateEnvData, TPrivateEntry> | undefined,
+    name: PrivateIdentifier,
+) {
+    return walkUpLexicalEnvironments(env, env => getPrivateIdentifier(env.privateEnv, name));
+}
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 760c2a97170e7..4a8ba0bf0b21e 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -550,8 +550,11 @@ export type PunctuationSyntaxKind =
     | SyntaxKind.ExclamationToken
     | SyntaxKind.TildeToken
     | SyntaxKind.AmpersandAmpersandToken
+    | SyntaxKind.AmpersandAmpersandEqualsToken
     | SyntaxKind.BarBarToken
+    | SyntaxKind.BarBarEqualsToken
     | SyntaxKind.QuestionQuestionToken
+    | SyntaxKind.QuestionQuestionEqualsToken
     | SyntaxKind.QuestionToken
     | SyntaxKind.ColonToken
     | SyntaxKind.AtToken
@@ -1576,6 +1579,9 @@ export type QuestionToken = PunctuationToken<SyntaxKind.QuestionToken>;
 export type ExclamationToken = PunctuationToken<SyntaxKind.ExclamationToken>;
 export type ColonToken = PunctuationToken<SyntaxKind.ColonToken>;
 export type EqualsToken = PunctuationToken<SyntaxKind.EqualsToken>;
+export type AmpersandAmpersandEqualsToken = PunctuationToken<SyntaxKind.AmpersandAmpersandEqualsToken>;
+export type BarBarEqualsToken = PunctuationToken<SyntaxKind.BarBarEqualsToken>;
+export type QuestionQuestionEqualsToken = PunctuationToken<SyntaxKind.QuestionQuestionEqualsToken>;
 export type AsteriskToken = PunctuationToken<SyntaxKind.AsteriskToken>;
 export type EqualsGreaterThanToken = PunctuationToken<SyntaxKind.EqualsGreaterThanToken>;
 export type PlusToken = PunctuationToken<SyntaxKind.PlusToken>;
@@ -1964,8 +1970,7 @@ export interface PropertyAssignment extends ObjectLiteralElement, JSDocContainer
     readonly initializer: Expression;
 
     // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined; // property assignment cannot have decorators
-    /** @internal */ readonly modifiers?: NodeArray<Modifier> | undefined; // property assignment cannot have modifiers
+    /** @internal */ readonly modifiers?: NodeArray<ModifierLike> | undefined; // property assignment cannot have decorators or modifiers
     /** @internal */ readonly questionToken?: QuestionToken | undefined; // property assignment cannot have a question token
     /** @internal */ readonly exclamationToken?: ExclamationToken | undefined; // property assignment cannot have an exclamation token
 }
@@ -1980,8 +1985,7 @@ export interface ShorthandPropertyAssignment extends ObjectLiteralElement, JSDoc
     readonly objectAssignmentInitializer?: Expression;
 
     // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined; // shorthand property assignment cannot have decorators
-    /** @internal */ readonly modifiers?: NodeArray<Modifier> | undefined; // shorthand property assignment cannot have modifiers
+    /** @internal */ readonly modifiers?: NodeArray<ModifierLike> | undefined; // shorthand property assignment cannot have decorators or modifiers
     /** @internal */ readonly questionToken?: QuestionToken | undefined; // shorthand property assignment cannot have a question token
     /** @internal */ readonly exclamationToken?: ExclamationToken | undefined; // shorthand property assignment cannot have an exclamation token
 }
@@ -2053,12 +2057,9 @@ export type FunctionLike = SignatureDeclaration;
 
 export interface FunctionDeclaration extends FunctionLikeDeclarationBase, DeclarationStatement, LocalsContainer {
     readonly kind: SyntaxKind.FunctionDeclaration;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly name?: Identifier;
     readonly body?: FunctionBody;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined; // functions cannot have decorators
 }
 
 export interface MethodSignature extends SignatureDeclarationBase, TypeElement, LocalsContainer {
@@ -2091,11 +2092,10 @@ export interface MethodDeclaration extends FunctionLikeDeclarationBase, ClassEle
 export interface ConstructorDeclaration extends FunctionLikeDeclarationBase, ClassElement, JSDocContainer, LocalsContainer {
     readonly kind: SyntaxKind.Constructor;
     readonly parent: ClassLikeDeclaration;
-    readonly modifiers?: NodeArray<Modifier> | undefined;
+    readonly modifiers?: NodeArray<ModifierLike> | undefined;
     readonly body?: FunctionBody | undefined;
 
     // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined; // A constructor cannot have decorators
     /** @internal */ readonly typeParameters?: NodeArray<TypeParameterDeclaration>; // A constructor cannot have type parameters
     /** @internal */ readonly type?: TypeNode; // A constructor cannot have a return type annotation
 }
@@ -2138,11 +2138,8 @@ export type AccessorDeclaration = GetAccessorDeclaration | SetAccessorDeclaratio
 export interface IndexSignatureDeclaration extends SignatureDeclarationBase, ClassElement, TypeElement, LocalsContainer {
     readonly kind: SyntaxKind.IndexSignature;
     readonly parent: ObjectTypeDeclaration;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly type: TypeNode;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export interface ClassStaticBlockDeclaration extends ClassElement, JSDocContainer, LocalsContainer {
@@ -2154,8 +2151,7 @@ export interface ClassStaticBlockDeclaration extends ClassElement, JSDocContaine
     /** @internal */ returnFlowNode?: FlowNode;
 
     // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
-    /** @internal */ readonly modifiers?: NodeArray<Modifier> | undefined;
+    /** @internal */ readonly modifiers?: NodeArray<ModifierLike> | undefined;
 }
 
 export interface TypeNode extends Node {
@@ -2677,12 +2673,13 @@ export type BindingOrAssignmentElement =
 export type ObjectBindingOrAssignmentElement =
     | BindingElement
     | PropertyAssignment // AssignmentProperty
- // AssignmentProperty
     | ShorthandPropertyAssignment // AssignmentProperty
- // AssignmentProperty
     | SpreadAssignment // AssignmentRestProperty
     ;
 
+/** @internal */
+export type ObjectAssignmentElement = Exclude<ObjectBindingOrAssignmentElement, BindingElement>;
+
 export type ArrayBindingOrAssignmentElement =
     | BindingElement
     | OmittedExpression // Elision
@@ -2691,11 +2688,13 @@ export type ArrayBindingOrAssignmentElement =
     | ObjectLiteralExpression // ObjectAssignmentPattern
     | AssignmentExpression<EqualsToken> // AssignmentElement
     | Identifier // DestructuringAssignmentTarget
- // DestructuringAssignmentTarget
     | PropertyAccessExpression // DestructuringAssignmentTarget
     | ElementAccessExpression // DestructuringAssignmentTarget
     ;
 
+/** @internal */
+export type ArrayAssignmentElement = Exclude<ArrayBindingOrAssignmentElement, BindingElement>;
+
 export type BindingOrAssignmentElementRestIndicator =
     | DotDotDotToken // from BindingElement
     | SpreadElement // AssignmentRestElement
@@ -2709,6 +2708,9 @@ export type BindingOrAssignmentElementTarget =
     | ElementAccessExpression
     | OmittedExpression;
 
+/** @internal */
+export type AssignmentElementTarget = Exclude<BindingOrAssignmentElementTarget, BindingPattern>;
+
 export type ObjectBindingOrAssignmentPattern =
     | ObjectBindingPattern
     | ObjectLiteralExpression // ObjectAssignmentPattern
@@ -3314,13 +3316,12 @@ export interface DebuggerStatement extends Statement, FlowContainer {
     readonly kind: SyntaxKind.DebuggerStatement;
 }
 
-export interface MissingDeclaration extends DeclarationStatement {
+export interface MissingDeclaration extends DeclarationStatement, PrimaryExpression {
     readonly kind: SyntaxKind.MissingDeclaration;
     readonly name?: Identifier;
 
     // The following properties are used only to report grammar errors
-    /** @internal */ illegalDecorators?: NodeArray<Decorator> | undefined;
-    /** @internal */ modifiers?: NodeArray<Modifier> | undefined;
+    /** @internal */ readonly modifiers?: NodeArray<ModifierLike> | undefined;
 }
 
 export type BlockLike =
@@ -3338,11 +3339,8 @@ export interface Block extends Statement, LocalsContainer {
 
 export interface VariableStatement extends Statement, FlowContainer {
     readonly kind: SyntaxKind.VariableStatement;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly declarationList: VariableDeclarationList;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export interface ExpressionStatement extends Statement, FlowContainer {
@@ -3549,14 +3547,11 @@ export interface TypeElement extends NamedDeclaration {
 
 export interface InterfaceDeclaration extends DeclarationStatement, JSDocContainer {
     readonly kind: SyntaxKind.InterfaceDeclaration;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly name: Identifier;
     readonly typeParameters?: NodeArray<TypeParameterDeclaration>;
     readonly heritageClauses?: NodeArray<HeritageClause>;
     readonly members: NodeArray<TypeElement>;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export interface HeritageClause extends Node {
@@ -3568,13 +3563,10 @@ export interface HeritageClause extends Node {
 
 export interface TypeAliasDeclaration extends DeclarationStatement, JSDocContainer, LocalsContainer {
     readonly kind: SyntaxKind.TypeAliasDeclaration;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly name: Identifier;
     readonly typeParameters?: NodeArray<TypeParameterDeclaration>;
     readonly type: TypeNode;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export interface EnumMember extends NamedDeclaration, JSDocContainer {
@@ -3588,12 +3580,9 @@ export interface EnumMember extends NamedDeclaration, JSDocContainer {
 
 export interface EnumDeclaration extends DeclarationStatement, JSDocContainer {
     readonly kind: SyntaxKind.EnumDeclaration;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly name: Identifier;
     readonly members: NodeArray<EnumMember>;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export type ModuleName =
@@ -3614,12 +3603,9 @@ export interface AmbientModuleDeclaration extends ModuleDeclaration {
 export interface ModuleDeclaration extends DeclarationStatement, JSDocContainer, LocalsContainer {
     readonly kind: SyntaxKind.ModuleDeclaration;
     readonly parent: ModuleBody | SourceFile;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly name: ModuleName;
     readonly body?: ModuleBody | JSDocNamespaceDeclaration;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export type NamespaceBody =
@@ -3661,16 +3647,13 @@ export type ModuleReference =
 export interface ImportEqualsDeclaration extends DeclarationStatement, JSDocContainer {
     readonly kind: SyntaxKind.ImportEqualsDeclaration;
     readonly parent: SourceFile | ModuleBlock;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly name: Identifier;
     readonly isTypeOnly: boolean;
 
     // 'EntityName' for an internal module reference, 'ExternalModuleReference' for an external
     // module reference.
     readonly moduleReference: ModuleReference;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export interface ExternalModuleReference extends Node {
@@ -3686,14 +3669,11 @@ export interface ExternalModuleReference extends Node {
 export interface ImportDeclaration extends Statement {
     readonly kind: SyntaxKind.ImportDeclaration;
     readonly parent: SourceFile | ModuleBlock;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly importClause?: ImportClause;
     /** If this is not a StringLiteral it will be a grammar error. */
     readonly moduleSpecifier: Expression;
     readonly assertClause?: AssertClause;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export type NamedImportBindings =
@@ -3753,23 +3733,19 @@ export interface NamespaceExportDeclaration extends DeclarationStatement, JSDocC
     readonly name: Identifier;
 
     // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
-    /** @internal */ readonly modifiers?: NodeArray<Modifier> | undefined;
+    /** @internal */ readonly modifiers?: NodeArray<ModifierLike> | undefined;
 }
 
 export interface ExportDeclaration extends DeclarationStatement, JSDocContainer {
     readonly kind: SyntaxKind.ExportDeclaration;
     readonly parent: SourceFile | ModuleBlock;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly isTypeOnly: boolean;
     /** Will not be assigned in the case of `export * from "foo";` */
     readonly exportClause?: NamedExportBindings;
     /** If this is not a StringLiteral it will be a grammar error. */
     readonly moduleSpecifier?: Expression;
     readonly assertClause?: AssertClause;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export interface NamedImports extends Node {
@@ -3829,12 +3805,9 @@ export type TypeOnlyAliasDeclaration =
 export interface ExportAssignment extends DeclarationStatement, JSDocContainer {
     readonly kind: SyntaxKind.ExportAssignment;
     readonly parent: SourceFile;
-    readonly modifiers?: NodeArray<Modifier>;
+    readonly modifiers?: NodeArray<ModifierLike>;
     readonly isExportEquals?: boolean;
     readonly expression: Expression;
-
-    // The following properties are used only to report grammar errors
-    /** @internal */ readonly illegalDecorators?: NodeArray<Decorator> | undefined;
 }
 
 export interface FileReference extends TextRange {
@@ -5990,6 +5963,7 @@ export interface NodeLinks {
     skipDirectInference?: true;         // Flag set by the API `getContextualType` call on a node when `Completions` is passed to force the checker to skip making inferences to a node's type
     declarationRequiresScopeChange?: boolean; // Set by `useOuterVariableScopeInParameter` in checker when downlevel emit would change the name resolution scope inside of a parameter.
     serializedTypes?: Map<string, SerializedTypeEntry>; // Collection of types serialized at this location
+    decoratorSignature?: Signature;     // Signature for decorator as if invoked by the runtime.
 }
 
 /** @internal */
@@ -7828,6 +7802,7 @@ export interface SourceMapSource {
 export interface EmitNode {
     annotatedNodes?: Node[];                 // Tracks Parse-tree nodes with EmitNodes for eventual cleanup.
     flags: EmitFlags;                        // Flags that customize emit
+    internalFlags: InternalEmitFlags;        // Internal flags that customize emit
     leadingComments?: SynthesizedComment[];  // Synthesized leading comments
     trailingComments?: SynthesizedComment[]; // Synthesized trailing comments
     commentRange?: TextRange;                // The text range to use when emitting leading or trailing comments
@@ -7840,6 +7815,7 @@ export interface EmitNode {
     startsOnNewLine?: boolean;               // If the node should begin on a new line
     snippetElement?: SnippetElement;         // Snippet element of the node
     typeNode?: TypeNode;                     // VariableDeclaration type
+    classThis?: Identifier;                  // Identifier that points to the final class constructor after decorators are applied
     identifierTypeArguments?: NodeArray<TypeNode | TypeParameterDeclaration>; // Only defined on synthesized identifiers. Though not syntactically valid, used in emitting diagnostics, quickinfo, and signature help.
     autoGenerate: AutoGenerateInfo | undefined; // Used for auto-generated identifiers and private identifiers.
     generatedImportReference?: ImportSpecifier; // Reference to the generated import specifier this identifier refers to
@@ -7900,11 +7876,17 @@ export const enum EmitFlags {
     HasEndOfDeclarationMarker = 1 << 23,    // Declaration has an associated NotEmittedStatement to mark the end of the declaration
     Iterator = 1 << 24,                     // The expression to a `yield*` should be treated as an Iterator when down-leveling, not an Iterable.
     NoAsciiEscaping = 1 << 25,              // When synthesizing nodes that lack an original node or textSourceNode, we want to write the text on the node with ASCII escaping substitutions.
-    /** @internal */ TypeScriptClassWrapper = 1 << 26, // The node is an IIFE class wrapper created by the ts transform.
-    /** @internal */ NeverApplyImportHelper = 1 << 27, // Indicates the node should never be wrapped with an import star helper (because, for example, it imports tslib itself)
-    /** @internal */ IgnoreSourceNewlines = 1 << 28,   // Overrides `printerOptions.preserveSourceNewlines` to print this node (and all descendants) with default whitespace.
-    /** @internal */ Immutable = 1 << 29,      // Indicates a node is a singleton intended to be reused in multiple locations. Any attempt to make further changes to the node will result in an error.
-    /** @internal */ IndirectCall = 1 << 30,   // Emit CallExpression as an indirect call: `(0, f)()`
+}
+
+/** @internal */
+export const enum InternalEmitFlags {
+    None = 0,
+    TypeScriptClassWrapper = 1 << 0, // The node is an IIFE class wrapper created by the ts transform.
+    NeverApplyImportHelper = 1 << 1, // Indicates the node should never be wrapped with an import star helper (because, for example, it imports tslib itself)
+    IgnoreSourceNewlines = 1 << 2,   // Overrides `printerOptions.preserveSourceNewlines` to print this node (and all descendants) with default whitespace.
+    Immutable = 1 << 3,              // Indicates a node is a singleton intended to be reused in multiple locations. Any attempt to make further changes to the node will result in an error.
+    IndirectCall = 1 << 4,           // Emit CallExpression as an indirect call: `(0, f)()`
+    TransformPrivateStaticElements = 1 << 5, // Indicates static private elements in a file or class should be transformed regardless of --target (used by esDecorators transform)
 }
 
 export interface EmitHelperBase {
@@ -7944,6 +7926,7 @@ export const enum ExternalEmitHelpers {
     Assign = 1 << 1,                // __assign (used by Jsx and ESNext object spread transformations)
     Rest = 1 << 2,                  // __rest (used by ESNext object rest transformation)
     Decorate = 1 << 3,              // __decorate (used by TypeScript decorators transformation)
+    ESDecorateAndRunInitializers = Decorate, // __esDecorate and __runInitializers (used by ECMAScript decorators transformation)
     Metadata = 1 << 4,              // __metadata (used by TypeScript decorators transformation)
     Param = 1 << 5,                 // __param (used by TypeScript decorators transformation)
     Awaiter = 1 << 6,               // __awaiter (used by ES2017 async functions transformation)
@@ -7963,8 +7946,11 @@ export const enum ExternalEmitHelpers {
     ClassPrivateFieldSet = 1 << 20, // __classPrivateFieldSet (used by the class private field transformation)
     ClassPrivateFieldIn = 1 << 21,  // __classPrivateFieldIn (used by the class private field transformation)
     CreateBinding = 1 << 22,        // __createBinding (use by the module transform for (re)exports and namespace imports)
+    SetFunctionName = 1 << 23,      // __setFunctionName (used by class fields and ECMAScript decorators)
+    PropKey = 1 << 24,              // __propKey (used by class fields and ECMAScript decorators)
+
     FirstEmitHelper = Extends,
-    LastEmitHelper = CreateBinding,
+    LastEmitHelper = PropKey,
 
     // Helpers included by ES2015 for..of
     ForOfIncludes = Values,
@@ -8054,6 +8040,12 @@ export type OuterExpression =
     | NonNullExpression
     | PartiallyEmittedExpression;
 
+/** @internal */
+export type WrappedExpression<T extends Expression> =
+    | OuterExpression & { readonly expression: WrappedExpression<T> }
+    | T
+    ;
+
 export type TypeOfTag = "undefined" | "number" | "bigint" | "boolean" | "string" | "symbol" | "object" | "function";
 
 /** @internal */
@@ -8243,8 +8235,8 @@ export interface NodeFactory {
     updateMethodSignature(node: MethodSignature, modifiers: readonly Modifier[] | undefined, name: PropertyName, questionToken: QuestionToken | undefined, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): MethodSignature;
     createMethodDeclaration(modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: string | PropertyName, questionToken: QuestionToken | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): MethodDeclaration;
     updateMethodDeclaration(node: MethodDeclaration, modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: PropertyName, questionToken: QuestionToken | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): MethodDeclaration;
-    createConstructorDeclaration(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
-    updateConstructorDeclaration(node: ConstructorDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
+    createConstructorDeclaration(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
+    updateConstructorDeclaration(node: ConstructorDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
     createGetAccessorDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | PropertyName, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): GetAccessorDeclaration;
     updateGetAccessorDeclaration(node: GetAccessorDeclaration, modifiers: readonly ModifierLike[] | undefined, name: PropertyName, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): GetAccessorDeclaration;
     createSetAccessorDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | PropertyName, parameters: readonly ParameterDeclaration[], body: Block | undefined): SetAccessorDeclaration;
@@ -8253,9 +8245,9 @@ export interface NodeFactory {
     updateCallSignature(node: CallSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): CallSignatureDeclaration;
     createConstructSignature(typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined): ConstructSignatureDeclaration;
     updateConstructSignature(node: ConstructSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): ConstructSignatureDeclaration;
-    createIndexSignature(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
-    /** @internal */ createIndexSignature(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined): IndexSignatureDeclaration; // eslint-disable-line @typescript-eslint/unified-signatures
-    updateIndexSignature(node: IndexSignatureDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
+    createIndexSignature(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
+    /** @internal */ createIndexSignature(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined): IndexSignatureDeclaration; // eslint-disable-line @typescript-eslint/unified-signatures
+    updateIndexSignature(node: IndexSignatureDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
     createTemplateLiteralTypeSpan(type: TypeNode, literal: TemplateMiddle | TemplateTail): TemplateLiteralTypeSpan;
     updateTemplateLiteralTypeSpan(node: TemplateLiteralTypeSpan, type: TypeNode, literal: TemplateMiddle | TemplateTail): TemplateLiteralTypeSpan;
     createClassStaticBlockDeclaration(body: Block): ClassStaticBlockDeclaration;
@@ -8419,8 +8411,8 @@ export interface NodeFactory {
 
     createBlock(statements: readonly Statement[], multiLine?: boolean): Block;
     updateBlock(node: Block, statements: readonly Statement[]): Block;
-    createVariableStatement(modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]): VariableStatement;
-    updateVariableStatement(node: VariableStatement, modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList): VariableStatement;
+    createVariableStatement(modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]): VariableStatement;
+    updateVariableStatement(node: VariableStatement, modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList): VariableStatement;
     createEmptyStatement(): EmptyStatement;
     createExpressionStatement(expression: Expression): ExpressionStatement;
     updateExpressionStatement(node: ExpressionStatement, expression: Expression): ExpressionStatement;
@@ -8461,24 +8453,24 @@ export interface NodeFactory {
     updateFunctionDeclaration(node: FunctionDeclaration, modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): FunctionDeclaration;
     createClassDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly ClassElement[]): ClassDeclaration;
     updateClassDeclaration(node: ClassDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly ClassElement[]): ClassDeclaration;
-    createInterfaceDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
-    updateInterfaceDeclaration(node: InterfaceDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
-    createTypeAliasDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
-    updateTypeAliasDeclaration(node: TypeAliasDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
-    createEnumDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration;
-    updateEnumDeclaration(node: EnumDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration;
-    createModuleDeclaration(modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration;
-    updateModuleDeclaration(node: ModuleDeclaration, modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration;
+    createInterfaceDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
+    updateInterfaceDeclaration(node: InterfaceDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
+    createTypeAliasDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
+    updateTypeAliasDeclaration(node: TypeAliasDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
+    createEnumDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration;
+    updateEnumDeclaration(node: EnumDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration;
+    createModuleDeclaration(modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration;
+    updateModuleDeclaration(node: ModuleDeclaration, modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration;
     createModuleBlock(statements: readonly Statement[]): ModuleBlock;
     updateModuleBlock(node: ModuleBlock, statements: readonly Statement[]): ModuleBlock;
     createCaseBlock(clauses: readonly CaseOrDefaultClause[]): CaseBlock;
     updateCaseBlock(node: CaseBlock, clauses: readonly CaseOrDefaultClause[]): CaseBlock;
     createNamespaceExportDeclaration(name: string | Identifier): NamespaceExportDeclaration;
     updateNamespaceExportDeclaration(node: NamespaceExportDeclaration, name: Identifier): NamespaceExportDeclaration;
-    createImportEqualsDeclaration(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-    updateImportEqualsDeclaration(node: ImportEqualsDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-    createImportDeclaration(modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration;
-    updateImportDeclaration(node: ImportDeclaration, modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration;
+    createImportEqualsDeclaration(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
+    updateImportEqualsDeclaration(node: ImportEqualsDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
+    createImportDeclaration(modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration;
+    updateImportDeclaration(node: ImportDeclaration, modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration;
     createImportClause(isTypeOnly: boolean, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
     updateImportClause(node: ImportClause, isTypeOnly: boolean, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
     createAssertClause(elements: NodeArray<AssertEntry>, multiLine?: boolean): AssertClause;
@@ -8495,10 +8487,10 @@ export interface NodeFactory {
     updateNamedImports(node: NamedImports, elements: readonly ImportSpecifier[]): NamedImports;
     createImportSpecifier(isTypeOnly: boolean, propertyName: Identifier | undefined, name: Identifier): ImportSpecifier;
     updateImportSpecifier(node: ImportSpecifier, isTypeOnly: boolean, propertyName: Identifier | undefined, name: Identifier): ImportSpecifier;
-    createExportAssignment(modifiers: readonly Modifier[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment;
-    updateExportAssignment(node: ExportAssignment, modifiers: readonly Modifier[] | undefined, expression: Expression): ExportAssignment;
-    createExportDeclaration(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration;
-    updateExportDeclaration(node: ExportDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration;
+    createExportAssignment(modifiers: readonly ModifierLike[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment;
+    updateExportAssignment(node: ExportAssignment, modifiers: readonly ModifierLike[] | undefined, expression: Expression): ExportAssignment;
+    createExportDeclaration(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration;
+    updateExportDeclaration(node: ExportDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration;
     createNamedExports(elements: readonly ExportSpecifier[]): NamedExports;
     updateNamedExports(node: NamedExports, elements: readonly ExportSpecifier[]): NamedExports;
     createExportSpecifier(isTypeOnly: boolean, propertyName: string | Identifier | undefined, name: string | Identifier): ExportSpecifier;
@@ -8754,6 +8746,7 @@ export interface NodeFactory {
     /** @internal */ createFunctionCallCall(target: Expression, thisArg: Expression, argumentsList: readonly Expression[]): CallExpression;
     /** @internal */ createFunctionApplyCall(target: Expression, thisArg: Expression, argumentsExpression: Expression): CallExpression;
     /** @internal */ createObjectDefinePropertyCall(target: Expression, propertyName: string | Expression, attributes: Expression): CallExpression;
+    /** @internal */ createObjectGetOwnPropertyDescriptorCall(target: Expression, propertyName: string | Expression): CallExpression;
     /** @internal */ createReflectGetCall(target: Expression, propertyKey: Expression, receiver?: Expression): CallExpression;
     /** @internal */ createReflectSetCall(target: Expression, propertyKey: Expression, value: Expression, receiver?: Expression): CallExpression;
     /** @internal */ createPropertyDescriptor(attributes: PropertyDescriptorAttributes, singleLine?: boolean): ObjectLiteralExpression;
@@ -8777,7 +8770,7 @@ export interface NodeFactory {
      *
      * @internal
      */
-    createAssignmentTargetWrapper(paramName: Identifier, expression: Expression): LeftHandSideExpression;
+    createAssignmentTargetWrapper(paramName: Identifier, expression: Expression): PropertyAccessExpression;
     /** @internal */ inlineExpressions(expressions: readonly Expression[]): Expression;
     /**
      * Gets the internal name of a declaration. This is primarily used for declarations that can be
diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
index dd6376699cb2f..033a0f7b41938 100644
--- a/src/compiler/utilities.ts
+++ b/src/compiler/utilities.ts
@@ -7,6 +7,7 @@ import {
     affectsEmitOptionDeclarations,
     AllAccessorDeclarations,
     AmbientModuleDeclaration,
+    AmpersandAmpersandEqualsToken,
     AnyImportOrBareOrAccessedRequire,
     AnyImportOrReExport,
     AnyImportSyntax,
@@ -22,6 +23,7 @@ import {
     AssignmentDeclarationKind,
     AssignmentExpression,
     AssignmentOperatorToken,
+    BarBarEqualsToken,
     BinaryExpression,
     binarySearch,
     BindableObjectDefinePropertyCall,
@@ -37,7 +39,6 @@ import {
     CallLikeExpression,
     CallSignatureDeclaration,
     canHaveDecorators,
-    canHaveIllegalDecorators,
     canHaveModifiers,
     CaseBlock,
     CaseClause,
@@ -48,6 +49,7 @@ import {
     CheckFlags,
     ClassDeclaration,
     ClassElement,
+    ClassExpression,
     ClassLikeDeclaration,
     ClassStaticBlockDeclaration,
     combinePaths,
@@ -224,6 +226,7 @@ import {
     InitializedVariableDeclaration,
     insertSorted,
     InterfaceDeclaration,
+    InternalEmitFlags,
     isAccessor,
     isAnyDirectorySeparator,
     isArray,
@@ -292,6 +295,7 @@ import {
     isLiteralTypeNode,
     isMemberName,
     isMetaProperty,
+    isMethodDeclaration,
     isMethodOrAccessor,
     isModuleDeclaration,
     isNamedDeclaration,
@@ -431,6 +435,7 @@ import {
     PropertySignature,
     PseudoBigInt,
     QualifiedName,
+    QuestionQuestionEqualsToken,
     ReadonlyCollection,
     ReadonlyTextRange,
     removeTrailingDirectorySeparator,
@@ -532,6 +537,7 @@ import {
     version,
     WhileStatement,
     WithStatement,
+    WrappedExpression,
     WriteFileCallback,
     WriteFileCallbackData,
     YieldExpression,
@@ -1175,6 +1181,16 @@ export function getEmitFlags(node: Node): EmitFlags {
     return emitNode && emitNode.flags || 0;
 }
 
+/**
+ * Gets flags that control emit behavior of a node.
+ *
+ * @internal
+ */
+export function getInternalEmitFlags(node: Node): InternalEmitFlags {
+    const emitNode = node.emitNode;
+    return emitNode && emitNode.internalFlags || 0;
+}
+
 /** @internal */
 export interface ScriptTargetFeatures {
     [key: string]: { [key: string]: string[] | undefined };
@@ -1721,6 +1737,12 @@ export function createDiagnosticForNodeFromMessageChain(node: Node, messageChain
     return createFileDiagnosticFromMessageChain(sourceFile, span.start, span.length, messageChain, relatedInformation);
 }
 
+/** @internal */
+export function createDiagnosticForNodeArrayFromMessageChain(sourceFile: SourceFile, nodes: NodeArray<Node>, messageChain: DiagnosticMessageChain, relatedInformation?: DiagnosticRelatedInformation[]): DiagnosticWithLocation {
+    const start = skipTrivia(sourceFile.text, nodes.pos);
+    return createFileDiagnosticFromMessageChain(sourceFile, start, nodes.end - start, messageChain, relatedInformation);
+}
+
 function assertDiagnosticLocation(file: SourceFile | undefined, start: number, length: number) {
     Debug.assertGreaterThanOrEqual(start, 0);
     Debug.assertGreaterThanOrEqual(length, 0);
@@ -2690,91 +2712,151 @@ export function getInvokedExpression(node: CallLikeExpression): Expression {
 }
 
 /** @internal */
-export function nodeCanBeDecorated(node: ClassDeclaration): true;
+export function nodeCanBeDecorated(useLegacyDecorators: boolean, node: ClassDeclaration): true;
+/** @internal */
+export function nodeCanBeDecorated(useLegacyDecorators: boolean, node: ClassExpression): boolean;
 /** @internal */
-export function nodeCanBeDecorated(node: ClassElement, parent: Node): boolean;
+export function nodeCanBeDecorated(useLegacyDecorators: boolean, node: ClassElement, parent: Node): boolean;
 /** @internal */
-export function nodeCanBeDecorated(node: Node, parent: Node, grandparent: Node): boolean;
+export function nodeCanBeDecorated(useLegacyDecorators: boolean, node: Node, parent: Node, grandparent: Node): boolean;
 /** @internal */
-export function nodeCanBeDecorated(node: Node, parent?: Node, grandparent?: Node): boolean {
+export function nodeCanBeDecorated(useLegacyDecorators: boolean, node: Node, parent?: Node, grandparent?: Node): boolean {
     // private names cannot be used with decorators yet
-    if (isNamedDeclaration(node) && isPrivateIdentifier(node.name)) {
+    if (useLegacyDecorators && isNamedDeclaration(node) && isPrivateIdentifier(node.name)) {
         return false;
     }
+
     switch (node.kind) {
         case SyntaxKind.ClassDeclaration:
-            // classes are valid targets
+            // class declarations are valid targets
             return true;
 
+        case SyntaxKind.ClassExpression:
+            // class expressions are valid targets for native decorators
+            return !useLegacyDecorators;
+
         case SyntaxKind.PropertyDeclaration:
             // property declarations are valid if their parent is a class declaration.
-            return parent!.kind === SyntaxKind.ClassDeclaration;
+            return parent !== undefined
+                    && (useLegacyDecorators ? isClassDeclaration(parent) : isClassLike(parent) && !hasAbstractModifier(node) && !hasAmbientModifier(node));
 
         case SyntaxKind.GetAccessor:
         case SyntaxKind.SetAccessor:
         case SyntaxKind.MethodDeclaration:
             // if this method has a body and its parent is a class declaration, this is a valid target.
             return (node as FunctionLikeDeclaration).body !== undefined
-                && parent!.kind === SyntaxKind.ClassDeclaration;
+                && parent !== undefined
+                && (useLegacyDecorators ? isClassDeclaration(parent) : isClassLike(parent));
 
         case SyntaxKind.Parameter:
-            // if the parameter's parent has a body and its grandparent is a class declaration, this is a valid target;
-            return (parent as FunctionLikeDeclaration).body !== undefined
-                && (parent!.kind === SyntaxKind.Constructor
-                    || parent!.kind === SyntaxKind.MethodDeclaration
-                    || parent!.kind === SyntaxKind.SetAccessor)
-                && grandparent!.kind === SyntaxKind.ClassDeclaration;
+            // TODO(rbuckton): Parameter decorator support for ES decorators must wait until it is standardized
+            if (!useLegacyDecorators) return false;
+            // if the parameter's parent has a body and its grandparent is a class declaration, this is a valid target.
+            return parent !== undefined
+                && (parent as FunctionLikeDeclaration).body !== undefined
+                && (parent.kind === SyntaxKind.Constructor
+                    || parent.kind === SyntaxKind.MethodDeclaration
+                    || parent.kind === SyntaxKind.SetAccessor)
+                && getThisParameter(parent as FunctionLikeDeclaration) !== node
+                    && grandparent !== undefined
+                    && grandparent.kind === SyntaxKind.ClassDeclaration;
     }
 
     return false;
 }
 
 /** @internal */
-export function nodeIsDecorated(node: ClassDeclaration): boolean;
+export function nodeIsDecorated(useLegacyDecorators: boolean, node: ClassDeclaration | ClassExpression): boolean;
 /** @internal */
-export function nodeIsDecorated(node: ClassElement, parent: Node): boolean;
+export function nodeIsDecorated(useLegacyDecorators: boolean, node: ClassElement, parent: Node): boolean;
 /** @internal */
-export function nodeIsDecorated(node: Node, parent: Node, grandparent: Node): boolean;
+export function nodeIsDecorated(useLegacyDecorators: boolean, node: Node, parent: Node, grandparent: Node): boolean;
 /** @internal */
-export function nodeIsDecorated(node: Node, parent?: Node, grandparent?: Node): boolean {
+export function nodeIsDecorated(useLegacyDecorators: boolean, node: Node, parent?: Node, grandparent?: Node): boolean {
     return hasDecorators(node)
-        && nodeCanBeDecorated(node, parent!, grandparent!); // TODO: GH#18217
+        && nodeCanBeDecorated(useLegacyDecorators, node, parent!, grandparent!);
 }
 
 /** @internal */
-export function nodeOrChildIsDecorated(node: ClassDeclaration): boolean;
+export function nodeOrChildIsDecorated(useLegacyDecorators: boolean, node: ClassDeclaration | ClassExpression): boolean;
 /** @internal */
-export function nodeOrChildIsDecorated(node: ClassElement, parent: Node): boolean;
+export function nodeOrChildIsDecorated(useLegacyDecorators: boolean, node: ClassElement, parent: Node): boolean;
 /** @internal */
-export function nodeOrChildIsDecorated(node: Node, parent: Node, grandparent: Node): boolean;
+export function nodeOrChildIsDecorated(useLegacyDecorators: boolean, node: Node, parent: Node, grandparent: Node): boolean;
 /** @internal */
-export function nodeOrChildIsDecorated(node: Node, parent?: Node, grandparent?: Node): boolean {
-    return nodeIsDecorated(node, parent!, grandparent!) || childIsDecorated(node, parent!); // TODO: GH#18217
+export function nodeOrChildIsDecorated(useLegacyDecorators: boolean, node: Node, parent?: Node, grandparent?: Node): boolean {
+    return nodeIsDecorated(useLegacyDecorators, node, parent!, grandparent!)
+        || childIsDecorated(useLegacyDecorators, node, parent!);
 }
 
 /** @internal */
-export function childIsDecorated(node: ClassDeclaration): boolean;
+export function childIsDecorated(useLegacyDecorators: boolean, node: ClassDeclaration | ClassExpression): boolean;
 /** @internal */
-export function childIsDecorated(node: Node, parent: Node): boolean;
+export function childIsDecorated(useLegacyDecorators: boolean, node: Node, parent: Node): boolean;
 /** @internal */
-export function childIsDecorated(node: Node, parent?: Node): boolean {
+export function childIsDecorated(useLegacyDecorators: boolean, node: Node, parent?: Node): boolean {
     switch (node.kind) {
         case SyntaxKind.ClassDeclaration:
-            return some((node as ClassDeclaration).members, m => nodeOrChildIsDecorated(m, node, parent!)); // TODO: GH#18217
+            return some((node as ClassDeclaration).members, m => nodeOrChildIsDecorated(useLegacyDecorators, m, node, parent!));
+            case SyntaxKind.ClassExpression:
+                return !useLegacyDecorators && some((node as ClassExpression).members, m => nodeOrChildIsDecorated(useLegacyDecorators, m, node, parent!));
         case SyntaxKind.MethodDeclaration:
         case SyntaxKind.SetAccessor:
         case SyntaxKind.Constructor:
-            return some((node as FunctionLikeDeclaration).parameters, p => nodeIsDecorated(p, node, parent!)); // TODO: GH#18217
+            return some((node as FunctionLikeDeclaration).parameters, p => nodeIsDecorated(useLegacyDecorators, p, node, parent!));
         default:
             return false;
     }
 }
 
 /** @internal */
-export function classOrConstructorParameterIsDecorated(node: ClassDeclaration): boolean {
-    if (nodeIsDecorated(node)) return true;
+export function classOrConstructorParameterIsDecorated(useLegacyDecorators: boolean, node: ClassDeclaration | ClassExpression): boolean {
+    if (nodeIsDecorated(useLegacyDecorators, node)) return true;
     const constructor = getFirstConstructorWithBody(node);
-    return !!constructor && childIsDecorated(constructor, node);
+    return !!constructor && childIsDecorated(useLegacyDecorators, constructor, node);
+}
+
+/** @internal */
+export function classElementOrClassElementParameterIsDecorated(useLegacyDecorators: boolean, node: ClassElement, parent: ClassDeclaration | ClassExpression): boolean {
+    let parameters: NodeArray<ParameterDeclaration> | undefined;
+    if (isAccessor(node)) {
+        const { firstAccessor, secondAccessor, setAccessor } = getAllAccessorDeclarations(parent.members, node);
+        const firstAccessorWithDecorators =
+            hasDecorators(firstAccessor) ? firstAccessor :
+            secondAccessor && hasDecorators(secondAccessor) ? secondAccessor :
+            undefined;
+        if (!firstAccessorWithDecorators || node !== firstAccessorWithDecorators) {
+            return false;
+        }
+        parameters = setAccessor?.parameters;
+    }
+    else if (isMethodDeclaration(node)) {
+        parameters = node.parameters;
+    }
+    if (nodeIsDecorated(useLegacyDecorators, node, parent)) {
+        return true;
+    }
+    if (parameters) {
+        for (const parameter of parameters) {
+            if (parameterIsThisKeyword(parameter)) continue;
+            if (nodeIsDecorated(useLegacyDecorators, parameter, node, parent)) return true;
+        }
+    }
+    return false;
+}
+
+/** @internal */
+export function isEmptyStringLiteral(node: StringLiteral): boolean {
+    if (node.textSourceNode) {
+        switch (node.textSourceNode.kind) {
+            case SyntaxKind.StringLiteral:
+                return isEmptyStringLiteral(node.textSourceNode);
+            case SyntaxKind.NoSubstitutionTemplateLiteral:
+                return node.text === "";
+        }
+        return false;
+    }
+    return node.text === "";
 }
 
 /** @internal */
@@ -4526,6 +4608,127 @@ export function isESSymbolIdentifier(node: Node): boolean {
     return node.kind === SyntaxKind.Identifier && (node as Identifier).escapedText === "Symbol";
 }
 
+/**
+ * Indicates whether a property name is the special `__proto__` property.
+ * Per the ECMA-262 spec, this only matters for property assignments whose name is
+ * the Identifier `__proto__`, or the string literal `"__proto__"`, but not for
+ * computed property names.
+ *
+ * @internal
+ */
+export function isProtoSetter(node: PropertyName) {
+    return isIdentifier(node) ? idText(node) === "__proto__" :
+        isStringLiteral(node) && node.text === "__proto__";
+}
+
+/** @internal */
+export type AnonymousFunctionDefinition =
+    | ClassExpression & { readonly name?: undefined }
+    | FunctionExpression & { readonly name?: undefined }
+    | ArrowFunction
+    ;
+
+/**
+ * Indicates whether an expression is an anonymous function definition.
+ *
+ * @see https://tc39.es/ecma262/#sec-isanonymousfunctiondefinition
+ * @internal
+ */
+export function isAnonymousFunctionDefinition(node: Expression, cb?: (node: AnonymousFunctionDefinition) => boolean): node is WrappedExpression<AnonymousFunctionDefinition> {
+    node = skipOuterExpressions(node);
+    switch (node.kind) {
+        case SyntaxKind.ClassExpression:
+        case SyntaxKind.FunctionExpression:
+            if ((node as ClassExpression | FunctionExpression).name) {
+                return false;
+            }
+            break;
+        case SyntaxKind.ArrowFunction:
+            break;
+        default:
+            return false;
+    }
+    return typeof cb === "function" ? cb(node as AnonymousFunctionDefinition) : true;
+}
+
+/** @internal */
+export type NamedEvaluationSource =
+    | PropertyAssignment & { readonly name: Identifier }
+    | ShorthandPropertyAssignment & { readonly objectAssignmentInitializer: Expression }
+    | VariableDeclaration & { readonly name: Identifier, readonly initializer: Expression }
+    | ParameterDeclaration & { readonly name: Identifier, readonly initializer: Expression, readonly dotDotDotToken: undefined }
+    | BindingElement & { readonly name: Identifier, readonly initializer: Expression, readonly dotDotDotToken: undefined }
+    | PropertyDeclaration & { readonly initializer: Expression }
+    | AssignmentExpression<EqualsToken | AmpersandAmpersandEqualsToken | BarBarEqualsToken | QuestionQuestionEqualsToken> & { readonly left: Identifier }
+    | ExportAssignment
+    ;
+
+/**
+ * Indicates whether a node is a potential source of an assigned name for a class, function, or arrow function.
+ *
+ * @internal
+ */
+export function isNamedEvaluationSource(node: Node): node is NamedEvaluationSource {
+    switch (node.kind) {
+        case SyntaxKind.PropertyAssignment:
+            return !isProtoSetter((node as PropertyAssignment).name);
+        case SyntaxKind.ShorthandPropertyAssignment:
+            return !!(node as ShorthandPropertyAssignment).objectAssignmentInitializer;
+        case SyntaxKind.VariableDeclaration:
+            return isIdentifier((node as VariableDeclaration).name) && !!(node as VariableDeclaration).initializer;
+        case SyntaxKind.Parameter:
+            return isIdentifier((node as ParameterDeclaration).name) && !!(node as VariableDeclaration).initializer && !(node as BindingElement).dotDotDotToken;
+        case SyntaxKind.BindingElement:
+            return isIdentifier((node as BindingElement).name) && !!(node as VariableDeclaration).initializer && !(node as BindingElement).dotDotDotToken;
+        case SyntaxKind.PropertyDeclaration:
+            return !!(node as PropertyDeclaration).initializer;
+        case SyntaxKind.BinaryExpression:
+            switch ((node as BinaryExpression).operatorToken.kind) {
+                case SyntaxKind.EqualsToken:
+                case SyntaxKind.AmpersandAmpersandEqualsToken:
+                case SyntaxKind.BarBarEqualsToken:
+                case SyntaxKind.QuestionQuestionEqualsToken:
+                    return isIdentifier((node as BinaryExpression).left);
+            }
+            break;
+        case SyntaxKind.ExportAssignment:
+            return true;
+    }
+    return false;
+}
+
+/** @internal */
+export type NamedEvaluation =
+    | PropertyAssignment & { readonly name: Identifier, readonly initializer: WrappedExpression<AnonymousFunctionDefinition> }
+    | ShorthandPropertyAssignment & { readonly objectAssignmentInitializer: WrappedExpression<AnonymousFunctionDefinition> }
+    | VariableDeclaration & { readonly name: Identifier, readonly initializer: WrappedExpression<AnonymousFunctionDefinition> }
+    | ParameterDeclaration & { readonly name: Identifier, readonly dotDotDotToken: undefined, readonly initializer: WrappedExpression<AnonymousFunctionDefinition> }
+    | BindingElement & { readonly name: Identifier, readonly dotDotDotToken: undefined, readonly initializer: WrappedExpression<AnonymousFunctionDefinition> }
+    | PropertyDeclaration & { readonly initializer: WrappedExpression<AnonymousFunctionDefinition> }
+    | AssignmentExpression<EqualsToken | AmpersandAmpersandEqualsToken | BarBarEqualsToken | QuestionQuestionEqualsToken> & { readonly left: Identifier, readonly right: WrappedExpression<AnonymousFunctionDefinition> }
+    | ExportAssignment & { readonly expression: WrappedExpression<AnonymousFunctionDefinition> }
+    ;
+
+/** @internal */
+export function isNamedEvaluation(node: Node, cb?: (node: AnonymousFunctionDefinition) => boolean): node is NamedEvaluation {
+    if (!isNamedEvaluationSource(node)) return false;
+    switch (node.kind) {
+        case SyntaxKind.PropertyAssignment:
+            return isAnonymousFunctionDefinition(node.initializer, cb);
+        case SyntaxKind.ShorthandPropertyAssignment:
+            return isAnonymousFunctionDefinition(node.objectAssignmentInitializer, cb);
+        case SyntaxKind.VariableDeclaration:
+        case SyntaxKind.Parameter:
+        case SyntaxKind.BindingElement:
+        case SyntaxKind.PropertyDeclaration:
+            return isAnonymousFunctionDefinition(node.initializer, cb);
+        case SyntaxKind.BinaryExpression:
+            return isAnonymousFunctionDefinition(node.right, cb);
+        case SyntaxKind.ExportAssignment:
+            return isAnonymousFunctionDefinition(node.expression, cb);
+    }
+}
+
 /** @internal */
 export function isPushOrUnshiftIdentifier(node: Identifier) {
     return node.escapedText === "push" || node.escapedText === "unshift";
@@ -6716,6 +6919,10 @@ export function moveRangePastDecorators(node: Node): TextRange {
  * @internal
  */
 export function moveRangePastModifiers(node: Node): TextRange {
+    if (isPropertyDeclaration(node) || isMethodDeclaration(node)) {
+        return moveRangePos(node, node.name.pos);
+    }
+
     const lastModifier = canHaveModifiers(node) ? lastOrUndefined(node.modifiers) : undefined;
     return lastModifier && !positionIsSynthesized(lastModifier.end)
         ? moveRangePos(node, lastModifier.end)
@@ -9241,7 +9448,6 @@ export function getContainingNodeArray(node: Node): NodeArray<Node> | undefined
         case SyntaxKind.Decorator: {
             const { parent } = node as Decorator;
             return canHaveDecorators(parent) ? parent.modifiers :
-                canHaveIllegalDecorators(parent) ? parent.illegalDecorators :
                 undefined;
         }
         case SyntaxKind.HeritageClause:
diff --git a/src/compiler/utilitiesPublic.ts b/src/compiler/utilitiesPublic.ts
index da47384f21edd..0aeccfe090146 100644
--- a/src/compiler/utilitiesPublic.ts
+++ b/src/compiler/utilitiesPublic.ts
@@ -537,8 +537,9 @@ export function getTypeParameterOwner(d: Declaration): Declaration | undefined {
 }
 
 export type ParameterPropertyDeclaration = ParameterDeclaration & { parent: ConstructorDeclaration, name: Identifier };
+
 export function isParameterPropertyDeclaration(node: Node, parent: Node): node is ParameterPropertyDeclaration {
-    return hasSyntacticModifier(node, ModifierFlags.ParameterPropertyModifier) && parent.kind === SyntaxKind.Constructor;
+    return isParameter(node) && hasSyntacticModifier(node, ModifierFlags.ParameterPropertyModifier) && parent.kind === SyntaxKind.Constructor;
 }
 
 export function isEmptyBindingPattern(node: BindingName): node is BindingPattern {
@@ -1947,6 +1948,7 @@ function isLeftHandSideExpressionKind(kind: SyntaxKind): boolean {
         case SyntaxKind.ExpressionWithTypeArguments:
         case SyntaxKind.MetaProperty:
         case SyntaxKind.ImportKeyword: // technically this is only an Expression if it's in a CallExpression
+        case SyntaxKind.MissingDeclaration:
             return true;
         default:
             return false;
diff --git a/src/compiler/visitorPublic.ts b/src/compiler/visitorPublic.ts
index 67e9dc5965954..9e3dee9440586 100644
--- a/src/compiler/visitorPublic.ts
+++ b/src/compiler/visitorPublic.ts
@@ -563,6 +563,25 @@ export function visitIterationBody(body: Statement, visitor: Visitor, context: T
     return updated;
 }
 
+/**
+ * Visits the elements of a {@link CommaListExpression}.
+ * @param visitor The visitor to use when visiting expressions whose result will not be discarded at runtime.
+ * @param discardVisitor The visitor to use when visiting expressions whose result will be discarded at runtime. Defaults to {@link visitor}.
+ */
+export function visitCommaListElements(elements: NodeArray<Expression>, visitor: Visitor, discardVisitor = visitor): NodeArray<Expression> {
+    if (discardVisitor === visitor || elements.length <= 1) {
+        return visitNodes(elements, visitor, isExpression);
+    }
+
+    let i = 0;
+    const length = elements.length;
+    return visitNodes(elements, node => {
+        const discarded = i < length - 1;
+        i++;
+        return discarded ? discardVisitor(node) : visitor(node);
+    }, isExpression);
+}
+
 /**
  * Visits each child of a Node using the supplied visitor, possibly returning a new Node of the same kind in its place.
  *
@@ -687,7 +706,7 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.Constructor]: function visitEachChildOfConstructorDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateConstructorDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             visitParameterList(node.parameters, visitor, context, nodesVisitor),
             visitFunctionBody(node.body!, visitor, context, nodeVisitor));
     },
@@ -732,7 +751,7 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.IndexSignature]: function visitEachChildOfIndexSignatureDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateIndexSignature(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             nodesVisitor(node.parameters, visitor, isParameter),
             Debug.checkDefined(nodeVisitor(node.type, visitor, isTypeNode)));
     },
@@ -1118,7 +1137,7 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.VariableStatement]: function visitEachChildOfVariableStatement(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateVariableStatement(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             Debug.checkDefined(nodeVisitor(node.declarationList, visitor, isVariableDeclarationList)));
     },
 
@@ -1249,7 +1268,7 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.InterfaceDeclaration]: function visitEachChildOfInterfaceDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateInterfaceDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             Debug.checkDefined(nodeVisitor(node.name, visitor, isIdentifier)),
             nodesVisitor(node.typeParameters, visitor, isTypeParameterDeclaration),
             nodesVisitor(node.heritageClauses, visitor, isHeritageClause),
@@ -1258,7 +1277,7 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.TypeAliasDeclaration]: function visitEachChildOfTypeAliasDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateTypeAliasDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             Debug.checkDefined(nodeVisitor(node.name, visitor, isIdentifier)),
             nodesVisitor(node.typeParameters, visitor, isTypeParameterDeclaration),
             Debug.checkDefined(nodeVisitor(node.type, visitor, isTypeNode)));
@@ -1266,14 +1285,14 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.EnumDeclaration]: function visitEachChildOfEnumDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateEnumDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             Debug.checkDefined(nodeVisitor(node.name, visitor, isIdentifier)),
             nodesVisitor(node.members, visitor, isEnumMember));
     },
 
     [SyntaxKind.ModuleDeclaration]: function visitEachChildOfModuleDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateModuleDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             Debug.checkDefined(nodeVisitor(node.name, visitor, isModuleName)),
             nodeVisitor(node.body, visitor, isModuleBody));
     },
@@ -1295,7 +1314,7 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.ImportEqualsDeclaration]: function visitEachChildOfImportEqualsDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateImportEqualsDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             node.isTypeOnly,
             Debug.checkDefined(nodeVisitor(node.name, visitor, isIdentifier)),
             Debug.checkDefined(nodeVisitor(node.moduleReference, visitor, isModuleReference)));
@@ -1303,7 +1322,7 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.ImportDeclaration]: function visitEachChildOfImportDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateImportDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             nodeVisitor(node.importClause, visitor, isImportClause),
             Debug.checkDefined(nodeVisitor(node.moduleSpecifier, visitor, isExpression)),
             nodeVisitor(node.assertClause, visitor, isAssertClause));
@@ -1352,13 +1371,13 @@ const visitEachChildTable: VisitEachChildTable = {
 
     [SyntaxKind.ExportAssignment]: function visitEachChildOfExportAssignment(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateExportAssignment(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             Debug.checkDefined(nodeVisitor(node.expression, visitor, isExpression)));
     },
 
     [SyntaxKind.ExportDeclaration]: function visitEachChildOfExportDeclaration(node, visitor, context, nodesVisitor, nodeVisitor, _tokenVisitor) {
         return context.factory.updateExportDeclaration(node,
-            nodesVisitor(node.modifiers, visitor, isModifier),
+            nodesVisitor(node.modifiers, visitor, isModifierLike),
             node.isTypeOnly,
             nodeVisitor(node.exportClause, visitor, isNamedExportBindings),
             nodeVisitor(node.moduleSpecifier, visitor, isExpression),
diff --git a/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts b/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts
index d23969ccda6be..cbfd4b00d069f 100644
--- a/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts
+++ b/src/deprecatedCompat/4.8/mergeDecoratorsAndModifiers.ts
@@ -44,6 +44,7 @@ import {
     isIdentifier,
     isImportClause,
     isModifier,
+    isModifierLike,
     isModuleBody,
     isModuleName,
     isModuleReference,
@@ -134,7 +135,7 @@ declare module "../../compiler/types" {
     // Module transform: converted from interface augmentation
     export interface ShorthandPropertyAssignment {
         /** @deprecated A shorthand property assignment cannot have modifiers */
-        readonly modifiers?: NodeArray<Modifier> | undefined;
+        readonly modifiers?: NodeArray<ModifierLike> | undefined;
 
         /** @deprecated A shorthand property assignment cannot have a question token */
         readonly questionToken?: QuestionToken | undefined;
@@ -311,7 +312,6 @@ declare module "../../compiler/types" {
 }
 
 const MUST_MERGE: DeprecationOptions = { since: "4.8", warnAfter: "4.9.0-0", message: "Decorators have been combined with modifiers. Callers should switch to an overload that does not accept a 'decorators' parameter." };
-const DISALLOW_DECORATORS: DeprecationOptions = { since: "4.8", warnAfter: "4.9.0-0", message: `Decorators are no longer supported for this function. Callers should switch to an overload that does not accept a 'decorators' parameter.` };
 const DISALLOW_DECORATORS_AND_MODIFIERS: DeprecationOptions = { since: "4.8", warnAfter: "4.9.0-0", message: `Decorators and modifiers are no longer supported for this function. Callers should switch to an overload that does not accept the 'decorators' and 'modifiers' parameters.` };
 
 function patchNodeFactory(factory: NodeFactory) {
@@ -553,7 +553,7 @@ function patchNodeFactory(factory: NodeFactory) {
 
     factory.createConstructorDeclaration = buildOverload("createConstructorDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration {
                 return createConstructorDeclaration(modifiers, parameters, body);
             },
 
@@ -564,24 +564,24 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, parameters, body, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || !some(modifiers, isDecorator)) &&
-                (parameters === undefined || !some(parameters, isModifier)) &&
+                (modifiers === undefined || isArray(modifiers)) &&
+                (parameters !== undefined && !some(parameters, isModifier)) &&
                 (body === undefined || !isArray(body)),
 
             1: ([decorators, modifiers, parameters, body]) =>
                 (decorators === undefined || !some(decorators, isModifier)) &&
                 (modifiers === undefined || !some(modifiers, isParameter)) &&
-                (parameters === undefined || isArray(parameters)) &&
+                (parameters !== undefined && isArray(parameters)) &&
                 (body === undefined || isBlock(body)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateConstructorDeclaration = buildOverload("updateConstructorDeclaration")
         .overload({
-            0(node: ConstructorDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration {
+            0(node: ConstructorDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration {
                 return updateConstructorDeclaration(node, modifiers, parameters, body);
             },
 
@@ -592,18 +592,18 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, parameters, body, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || !some(modifiers, isDecorator)) &&
-                (parameters === undefined || !some(parameters, isModifier)) &&
+                (modifiers === undefined || isArray(modifiers)) &&
+                (parameters !== undefined && !some(parameters, isModifier)) &&
                 (body === undefined || !isArray(body)),
 
             1: ([, decorators, modifiers, parameters, body]) =>
                 (decorators === undefined || !some(decorators, isModifier)) &&
                 (modifiers === undefined || !some(modifiers, isParameter)) &&
-                (parameters === undefined || isArray(parameters)) &&
+                (parameters !== undefined && isArray(parameters)) &&
                 (body === undefined || isBlock(body)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
@@ -621,14 +621,14 @@ function patchNodeFactory(factory: NodeFactory) {
             0: ([, name, parameters, type, body, other]) =>
                 (other === undefined) &&
                 (name === undefined || !isArray(name)) &&
-                (parameters === undefined || isArray(parameters)) &&
+                (parameters !== undefined && isArray(parameters)) &&
                 (type === undefined || !isArray(type)) &&
                 (body === undefined || isBlock(body)),
 
             1: ([, modifiers, name, parameters, type, body]) =>
                 (modifiers === undefined || isArray(modifiers)) &&
                 (name === undefined || !isArray(name)) &&
-                (parameters === undefined || isArray(parameters)) &&
+                (parameters !== undefined && isArray(parameters)) &&
                 (type === undefined || isTypeNode(type)) &&
                 (body === undefined || isBlock(body)),
         })
@@ -725,7 +725,7 @@ function patchNodeFactory(factory: NodeFactory) {
 
     factory.createIndexSignature = buildOverload("createIndexSignature")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined): IndexSignatureDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined): IndexSignatureDeclaration {
                 return createIndexSignature(modifiers, parameters, type);
             },
 
@@ -736,24 +736,24 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, parameters, type, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
-                (parameters === undefined || every(parameters, isParameter)) &&
+                (modifiers === undefined || isArray(modifiers)) &&
+                (parameters !== undefined && every(parameters, isParameter)) &&
                 (type === undefined || !isArray(type)),
 
             1: ([decorators, modifiers, parameters, type]) =>
                 (decorators === undefined || every(decorators, isDecorator)) &&
                 (modifiers === undefined || every(modifiers, isModifier)) &&
-                (parameters === undefined || isArray(parameters)) &&
+                (parameters !== undefined && isArray(parameters)) &&
                 (type === undefined || isTypeNode(type)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateIndexSignature = buildOverload("updateIndexSignature")
         .overload({
-            0(node: IndexSignatureDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration {
+            0(node: IndexSignatureDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration {
                 return updateIndexSignature(node, modifiers, parameters, type);
             },
 
@@ -764,18 +764,18 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, parameters, type, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
-                (parameters === undefined || every(parameters, isParameter)) &&
+                (modifiers === undefined || isArray(modifiers)) &&
+                (parameters !== undefined && every(parameters, isParameter)) &&
                 (type === undefined || !isArray(type)),
 
             1: ([, decorators, modifiers, parameters, type]) =>
                 (decorators === undefined || every(decorators, isDecorator)) &&
                 (modifiers === undefined || every(modifiers, isModifier)) &&
-                (parameters === undefined || isArray(parameters)) &&
+                (parameters !== undefined && isArray(parameters)) &&
                 (type === undefined || isTypeNode(type)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
@@ -797,7 +797,7 @@ function patchNodeFactory(factory: NodeFactory) {
 
             1: ([decorators, modifiers, body]) =>
                 (decorators === undefined || isArray(decorators)) &&
-                (modifiers === undefined || isArray(decorators)) &&
+                (modifiers === undefined || isArray(modifiers)) &&
                 (body === undefined || isBlock(body)),
         })
         .deprecate({
@@ -857,7 +857,7 @@ function patchNodeFactory(factory: NodeFactory) {
                 (members === undefined || isArray(members)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
@@ -887,7 +887,7 @@ function patchNodeFactory(factory: NodeFactory) {
                 (members === undefined || isArray(members)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
@@ -921,7 +921,7 @@ function patchNodeFactory(factory: NodeFactory) {
                 (body === undefined || isBlock(body)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
@@ -955,7 +955,7 @@ function patchNodeFactory(factory: NodeFactory) {
                 (body === undefined || isBlock(body)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
@@ -1016,7 +1016,7 @@ function patchNodeFactory(factory: NodeFactory) {
 
     factory.createInterfaceDeclaration = buildOverload("createInterfaceDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration {
                 return createInterfaceDeclaration(modifiers, name, typeParameters, heritageClauses, members);
             },
 
@@ -1027,7 +1027,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, name, typeParameters, heritageClauses, members, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name === undefined || !isArray(name)) &&
                 (typeParameters === undefined || isArray(typeParameters)) &&
                 (heritageClauses === undefined || every(heritageClauses, isHeritageClause)) &&
@@ -1042,13 +1042,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (members === undefined || every(members, isTypeElement)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateInterfaceDeclaration = buildOverload("updateInterfaceDeclaration")
         .overload({
-            0(node: InterfaceDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration {
+            0(node: InterfaceDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration {
                 return updateInterfaceDeclaration(node, modifiers, name, typeParameters, heritageClauses, members);
             },
 
@@ -1059,7 +1059,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, name, typeParameters, heritageClauses, members, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name === undefined || !isArray(name)) &&
                 (typeParameters === undefined || isArray(typeParameters)) &&
                 (heritageClauses === undefined || every(heritageClauses, isHeritageClause)) &&
@@ -1074,13 +1074,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (members === undefined || every(members, isTypeElement)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.createTypeAliasDeclaration = buildOverload("createTypeAliasDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration {
                 return createTypeAliasDeclaration(modifiers, name, typeParameters, type);
             },
 
@@ -1091,7 +1091,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, name, typeParameters, type, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name === undefined || !isArray(name)) &&
                 (typeParameters === undefined || isArray(typeParameters)) &&
                 (type === undefined || !isArray(type)),
@@ -1104,13 +1104,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (type === undefined || isTypeNode(type)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateTypeAliasDeclaration = buildOverload("updateTypeAliasDeclaration")
         .overload({
-            0(node: TypeAliasDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration {
+            0(node: TypeAliasDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration {
                 return updateTypeAliasDeclaration(node, modifiers, name, typeParameters, type);
             },
 
@@ -1121,7 +1121,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, name, typeParameters, type, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name === undefined || !isArray(name)) &&
                 (typeParameters === undefined || isArray(typeParameters)) &&
                 (type === undefined || !isArray(type)),
@@ -1134,13 +1134,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (type === undefined || isTypeNode(type)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.createEnumDeclaration = buildOverload("createEnumDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration {
                 return createEnumDeclaration(modifiers, name, members);
             },
 
@@ -1151,7 +1151,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, name, members, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name === undefined || !isArray(name)) &&
                 (members === undefined || isArray(members)),
 
@@ -1162,13 +1162,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (members === undefined || isArray(members)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateEnumDeclaration = buildOverload("updateEnumDeclaration")
         .overload({
-            0(node: EnumDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration {
+            0(node: EnumDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration {
                 return updateEnumDeclaration(node, modifiers, name, members);
             },
 
@@ -1179,7 +1179,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, name, members, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name === undefined || !isArray(name)) &&
                 (members === undefined || isArray(members)),
 
@@ -1190,13 +1190,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (members === undefined || isArray(members)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.createModuleDeclaration = buildOverload("createModuleDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration {
                 return createModuleDeclaration(modifiers, name, body, flags);
             },
 
@@ -1207,7 +1207,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, name, body, flags, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name !== undefined && !isArray(name)) &&
                 (body === undefined || isModuleBody(body)) &&
                 (flags === undefined || typeof flags === "number"),
@@ -1220,13 +1220,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (flags === undefined || typeof flags === "number"),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateModuleDeclaration = buildOverload("updateModuleDeclaration")
         .overload({
-            0(node: ModuleDeclaration, modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration {
+            0(node: ModuleDeclaration, modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration {
                 return updateModuleDeclaration(node, modifiers, name, body);
             },
 
@@ -1237,7 +1237,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, name, body, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (name === undefined || !isArray(name)) &&
                 (body === undefined || isModuleBody(body)),
 
@@ -1248,13 +1248,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (body === undefined || isModuleBody(body)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.createImportEqualsDeclaration = buildOverload("createImportEqualsDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration {
                 return createImportEqualsDeclaration(modifiers, isTypeOnly, name, moduleReference);
             },
 
@@ -1265,7 +1265,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, isTypeOnly, name, moduleReference, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (isTypeOnly === undefined || typeof isTypeOnly === "boolean") &&
                 (typeof name !== "boolean") &&
                 (typeof moduleReference !== "string"),
@@ -1278,13 +1278,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (moduleReference !== undefined && isModuleReference(moduleReference)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateImportEqualsDeclaration = buildOverload("updateImportEqualsDeclaration")
         .overload({
-            0(node: ImportEqualsDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration {
+            0(node: ImportEqualsDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration {
                 return updateImportEqualsDeclaration(node, modifiers, isTypeOnly, name, moduleReference);
             },
 
@@ -1295,7 +1295,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, isTypeOnly, name, moduleReference, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (isTypeOnly === undefined || typeof isTypeOnly === "boolean") &&
                 (typeof name !== "boolean") &&
                 (typeof moduleReference !== "string"),
@@ -1308,13 +1308,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (moduleReference !== undefined && isModuleReference(moduleReference)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.createImportDeclaration = buildOverload("createImportDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration {
                 return createImportDeclaration(modifiers, importClause, moduleSpecifier, assertClause);
             },
 
@@ -1325,7 +1325,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, importClause, moduleSpecifier, assertClause, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (importClause === undefined || !isArray(importClause)) &&
                 (moduleSpecifier !== undefined && isExpression(moduleSpecifier)) &&
                 (assertClause === undefined || isAssertClause(assertClause)),
@@ -1338,13 +1338,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (assertClause === undefined || isAssertClause(assertClause)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateImportDeclaration = buildOverload("updateImportDeclaration")
         .overload({
-            0(node: ImportDeclaration, modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration {
+            0(node: ImportDeclaration, modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration {
                 return updateImportDeclaration(node, modifiers, importClause, moduleSpecifier, assertClause);
             },
 
@@ -1355,7 +1355,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, importClause, moduleSpecifier, assertClause, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (importClause === undefined || !isArray(importClause)) &&
                 (moduleSpecifier === undefined || isExpression(moduleSpecifier)) &&
                 (assertClause === undefined || isAssertClause(assertClause)),
@@ -1368,13 +1368,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (assertClause === undefined || isAssertClause(assertClause)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.createExportAssignment = buildOverload("createExportAssignment")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment {
+            0(modifiers: readonly ModifierLike[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment {
                 return createExportAssignment(modifiers, isExportEquals, expression);
             },
 
@@ -1385,7 +1385,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, isExportEquals, expression, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (isExportEquals === undefined || typeof isExportEquals === "boolean") &&
                 (typeof expression === "object"),
 
@@ -1396,13 +1396,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (expression !== undefined && isExpression(expression)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateExportAssignment = buildOverload("updateExportAssignment")
         .overload({
-            0(node: ExportAssignment, modifiers: readonly Modifier[] | undefined, expression: Expression): ExportAssignment {
+            0(node: ExportAssignment, modifiers: readonly ModifierLike[] | undefined, expression: Expression): ExportAssignment {
                 return updateExportAssignment(node, modifiers, expression);
             },
 
@@ -1413,7 +1413,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, expression, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (expression !== undefined && !isArray(expression)),
 
             1: ([, decorators, modifiers, expression]) =>
@@ -1422,13 +1422,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (expression !== undefined && isExpression(expression)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.createExportDeclaration = buildOverload("createExportDeclaration")
         .overload({
-            0(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration {
+            0(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration {
                 return createExportDeclaration(modifiers, isTypeOnly, exportClause, moduleSpecifier, assertClause);
             },
 
@@ -1439,7 +1439,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([modifiers, isTypeOnly, exportClause, moduleSpecifier, assertClause, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (typeof isTypeOnly === "boolean") &&
                 (typeof exportClause !== "boolean") &&
                 (moduleSpecifier === undefined || isExpression(moduleSpecifier)) &&
@@ -1454,13 +1454,13 @@ function patchNodeFactory(factory: NodeFactory) {
                 (assertClause === undefined || isAssertClause(assertClause)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 
     factory.updateExportDeclaration = buildOverload("updateExportDeclaration")
         .overload({
-            0(node: ExportDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration {
+            0(node: ExportDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration {
                 return updateExportDeclaration(node, modifiers, isTypeOnly, exportClause, moduleSpecifier, assertClause);
             },
 
@@ -1471,7 +1471,7 @@ function patchNodeFactory(factory: NodeFactory) {
         .bind({
             0: ([, modifiers, isTypeOnly, exportClause, moduleSpecifier, assertClause, other]) =>
                 (other === undefined) &&
-                (modifiers === undefined || every(modifiers, isModifier)) &&
+                (modifiers === undefined || every(modifiers, isModifierLike)) &&
                 (typeof isTypeOnly === "boolean") &&
                 (typeof exportClause !== "boolean") &&
                 (moduleSpecifier === undefined || isExpression(moduleSpecifier)) &&
@@ -1486,7 +1486,7 @@ function patchNodeFactory(factory: NodeFactory) {
                 (assertClause === undefined || isAssertClause(assertClause)),
         })
         .deprecate({
-            1: DISALLOW_DECORATORS
+            1: MUST_MERGE
         })
         .finish();
 }
diff --git a/src/harness/fourslashInterfaceImpl.ts b/src/harness/fourslashInterfaceImpl.ts
index 15d42ad6b960f..2ad9711d2a148 100644
--- a/src/harness/fourslashInterfaceImpl.ts
+++ b/src/harness/fourslashInterfaceImpl.ts
@@ -1174,6 +1174,16 @@ export namespace Completion {
         typeEntry("PropertyDecorator"),
         typeEntry("MethodDecorator"),
         typeEntry("ParameterDecorator"),
+        typeEntry("ClassMemberDecoratorContext"),
+        typeEntry("DecoratorContext"),
+        interfaceEntry("ClassDecoratorContext"),
+        interfaceEntry("ClassMethodDecoratorContext"),
+        interfaceEntry("ClassGetterDecoratorContext"),
+        interfaceEntry("ClassSetterDecoratorContext"),
+        interfaceEntry("ClassAccessorDecoratorContext"),
+        interfaceEntry("ClassAccessorDecoratorTarget"),
+        interfaceEntry("ClassAccessorDecoratorResult"),
+        interfaceEntry("ClassFieldDecoratorContext"),
         typeEntry("PromiseConstructorLike"),
         interfaceEntry("PromiseLike"),
         interfaceEntry("Promise"),
diff --git a/src/lib/decorators.d.ts b/src/lib/decorators.d.ts
new file mode 100644
index 0000000000000..41d4956666550
--- /dev/null
+++ b/src/lib/decorators.d.ts
@@ -0,0 +1,337 @@
+/**
+ * The decorator context types provided to class member decorators.
+ */
+type ClassMemberDecoratorContext =
+    | ClassMethodDecoratorContext
+    | ClassGetterDecoratorContext
+    | ClassSetterDecoratorContext
+    | ClassFieldDecoratorContext
+    | ClassAccessorDecoratorContext
+    ;
+
+/**
+ * The decorator context types provided to any decorator.
+ */
+type DecoratorContext =
+    | ClassDecoratorContext
+    | ClassMemberDecoratorContext
+    ;
+
+/**
+ * Context provided to a class decorator.
+ * @template Class The type of the decorated class associated with this context.
+ */
+interface ClassDecoratorContext<
+    Class extends abstract new (...args: any) => any = abstract new (...args: any) => any,
+> {
+    /** The kind of element that was decorated. */
+    readonly kind: "class";
+
+    /** The name of the decorated class. */
+    readonly name: string | undefined;
+
+    /**
+     * Adds a callback to be invoked after the class definition has been finalized.
+     *
+     * @example
+     * ```ts
+     * function customElement(name: string): ClassDecoratorFunction {
+     *   return (target, context) => {
+     *     context.addInitializer(function () {
+     *       customElements.define(name, this);
+     *     });
+     *   }
+     * }
+     *
+     * @customElement("my-element")
+     * class MyElement {}
+     * ```
+     */
+    addInitializer(initializer: (this: Class) => void): void;
+}
+
+/**
+ * Context provided to a class method decorator.
+ * @template This The type on which the class element will be defined. For a static class element, this will be
+ * the type of the constructor. For a non-static class element, this will be the type of the instance.
+ * @template Value The type of the decorated class method.
+ */
+interface ClassMethodDecoratorContext<
+    This = unknown,
+    Value extends (this: This, ...args: any) => any = (this: This, ...args: any) => any,
+> {
+    /** The kind of class member that was decorated. */
+    readonly kind: "method";
+
+    /** The name of the decorated class member. */
+    readonly name: string | symbol;
+
+    /** A value indicating whether the class member is a static (`true`) or instance (`false`) member. */
+    readonly static: boolean;
+
+    /** A value indicating whether the class member has a private name. */
+    readonly private: boolean;
+
+    // NOTE: Disabled, pending the outcome of https://github.com/tc39/proposal-decorators/issues/494
+    // /** An object that can be used to access the current value of the class member at runtime. */
+    // readonly access: {
+    //     /**
+    //      * Gets the current value of the method from the provided receiver.
+    //      *
+    //      * @example
+    //      * let fn = context.access.get.call(instance);
+    //      */
+    //     get(this: This): Value;
+    // };
+
+    /**
+     * Adds a callback to be invoked either before static initializers are run (when
+     * decorating a `static` member), or before instance initializers are run (when
+     * decorating a non-`static` member).
+     *
+     * @example
+     * ```ts
+     * const bound: ClassMethodDecoratorFunction = (value, context) {
+     *   if (context.private) throw new TypeError("Not supported on private methods.");
+     *   context.addInitializer(function () {
+     *     this[context.name] = this[context.name].bind(this);
+     *   });
+     * }
+     *
+     * class C {
+     *   message = "Hello";
+     *
+     *   @bound
+     *   m() {
+     *     console.log(this.message);
+     *   }
+     * }
+     * ```
+     */
+    addInitializer(initializer: (this: This) => void): void;
+}
+
+/**
+ * Context provided to a class getter decorator.
+ * @template This The type on which the class element will be defined. For a static class element, this will be
+ * the type of the constructor. For a non-static class element, this will be the type of the instance.
+ * @template Value The property type of the decorated class getter.
+ */
+interface ClassGetterDecoratorContext<
+    This = unknown,
+    Value = unknown,
+> {
+    /** The kind of class member that was decorated. */
+    readonly kind: "getter";
+
+    /** The name of the decorated class member. */
+    readonly name: string | symbol;
+
+    /** A value indicating whether the class member is a static (`true`) or instance (`false`) member. */
+    readonly static: boolean;
+
+    /** A value indicating whether the class member has a private name. */
+    readonly private: boolean;
+
+    // NOTE: Disabled, pending the outcome of https://github.com/tc39/proposal-decorators/issues/494
+    // /** An object that can be used to access the current value of the class member at runtime. */
+    // readonly access: {
+    //     /**
+    //      * Invokes the getter on the provided receiver.
+    //      *
+    //      * @example
+    //      * let value = context.access.get.call(instance);
+    //      */
+    //     get(this: This): Value;
+    // };
+
+    /**
+     * Adds a callback to be invoked either before static initializers are run (when
+     * decorating a `static` member), or before instance initializers are run (when
+     * decorating a non-`static` member).
+     */
+    addInitializer(initializer: (this: This) => void): void;
+}
+
+/**
+ * Context provided to a class setter decorator.
+ * @template This The type on which the class element will be defined. For a static class element, this will be
+ * the type of the constructor. For a non-static class element, this will be the type of the instance.
+ * @template Value The type of the decorated class setter.
+ */
+interface ClassSetterDecoratorContext<
+    This = unknown,
+    Value = unknown,
+> {
+    /** The kind of class member that was decorated. */
+    readonly kind: "setter";
+
+    /** The name of the decorated class member. */
+    readonly name: string | symbol;
+
+    /** A value indicating whether the class member is a static (`true`) or instance (`false`) member. */
+    readonly static: boolean;
+
+    /** A value indicating whether the class member has a private name. */
+    readonly private: boolean;
+
+    // NOTE: Disabled, pending the outcome of https://github.com/tc39/proposal-decorators/issues/494
+    /** An object that can be used to access the current value of the class member at runtime. */
+    // readonly access: {
+    //     /**
+    //      * Invokes the setter on the provided receiver.
+    //      *
+    //      * @example
+    //      * context.access.set.call(instance, value);
+    //      */
+    //     set(this: This, value: Value): void;
+    // };
+
+    /**
+     * Adds a callback to be invoked either before static initializers are run (when
+     * decorating a `static` member), or before instance initializers are run (when
+     * decorating a non-`static` member).
+     */
+    addInitializer(initializer: (this: This) => void): void;
+}
+
+/**
+ * Context provided to a class `accessor` field decorator.
+ * @template This The type on which the class element will be defined. For a static class element, this will be
+ * the type of the constructor. For a non-static class element, this will be the type of the instance.
+ * @template Value The type of decorated class field.
+ */
+interface ClassAccessorDecoratorContext<
+    This = unknown,
+    Value = unknown,
+> {
+    /** The kind of class member that was decorated. */
+    readonly kind: "accessor";
+
+    /** The name of the decorated class member. */
+    readonly name: string | symbol;
+
+    /** A value indicating whether the class member is a static (`true`) or instance (`false`) member. */
+    readonly static: boolean;
+
+    /** A value indicating whether the class member has a private name. */
+    readonly private: boolean;
+
+    // NOTE: Disabled, pending the outcome of https://github.com/tc39/proposal-decorators/issues/494
+    // /** An object that can be used to access the current value of the class member at runtime. */
+    // readonly access: {
+    //     /**
+    //      * Invokes the getter on the provided receiver.
+    //      *
+    //      * @example
+    //      * let value = context.access.get.call(instance);
+    //      */
+    //     get(this: This): Value;
+
+    //     /**
+    //      * Invokes the setter on the provided receiver.
+    //      *
+    //      * @example
+    //      * context.access.set.call(instance, value);
+    //      */
+    //     set(this: This, value: Value): void;
+    // };
+
+    /**
+     * Adds a callback to be invoked either before static initializers are run (when
+     * decorating a `static` member), or before instance initializers are run (when
+     * decorating a non-`static` member).
+     */
+    addInitializer(initializer: (this: This) => void): void;
+}
+
+/**
+ * Describes the target provided to class `accessor` field decorators.
+ * @template This The `this` type to which the target applies.
+ * @template Value The property type for the class `accessor` field.
+ */
+interface ClassAccessorDecoratorTarget<This, Value> {
+    /**
+     * Invokes the getter that was defined prior to decorator application.
+     *
+     * @example
+     * let value = target.get.call(instance);
+     */
+    get(this: This): Value;
+
+    /**
+     * Invokes the setter that was defined prior to decorator application.
+     *
+     * @example
+     * target.set.call(instance, value);
+     */
+    set(this: This, value: Value): void;
+}
+
+/**
+ * Describes the allowed return value from a class `accessor` field decorator.
+ * @template This The `this` type to which the target applies.
+ * @template Value The property type for the class `accessor` field.
+ */
+interface ClassAccessorDecoratorResult<This, Value> {
+    /**
+     * An optional replacement getter function. If not provided, the existing getter function is used instead.
+     */
+    get?(this: This): Value;
+
+    /**
+     * An optional replacement setter function. If not provided, the existing setter function is used instead.
+     */
+    set?(this: This, value: Value): void;
+
+    /**
+     * An optional initializer mutator that is invoked when the underlying field initializer is evaluated.
+     * @param value The incoming initializer value.
+     * @returns The replacement initializer value.
+     */
+    init?(this: This, value: Value): Value;
+}
+
+/**
+ * Context provided to a class field decorator.
+ * @template This The type on which the class element will be defined. For a static class element, this will be
+ * the type of the constructor. For a non-static class element, this will be the type of the instance.
+ * @template Value The type of the decorated class field.
+ */
+interface ClassFieldDecoratorContext<
+    This = unknown,
+    Value = unknown,
+> {
+    /** The kind of class member that was decorated. */
+    readonly kind: "field";
+
+    /** The name of the decorated class member. */
+    readonly name: string | symbol;
+
+    /** A value indicating whether the class member is a static (`true`) or instance (`false`) member. */
+    readonly static: boolean;
+
+    /** A value indicating whether the class member has a private name. */
+    readonly private: boolean;
+
+    // NOTE: Disabled, pending the outcome of https://github.com/tc39/proposal-decorators/issues/494
+    // /** An object that can be used to access the current value of the class member at runtime. */
+    // readonly access: {
+    //     /**
+    //      * Gets the value of the field on the provided receiver.
+    //      */
+    //     get(this: This): Value;
+
+    //     /**
+    //      * Sets the value of the field on the provided receiver.
+    //      */
+    //     set(this: This, value: Value): void;
+    // };
+
+    /**
+     * Adds a callback to be invoked either before static initializers are run (when
+     * decorating a `static` member), or before instance initializers are run (when
+     * decorating a non-`static` member).
+     */
+    addInitializer(initializer: (this: This) => void): void;
+}
diff --git a/src/lib/decorators.legacy.d.ts b/src/lib/decorators.legacy.d.ts
new file mode 100644
index 0000000000000..5638b44921b7a
--- /dev/null
+++ b/src/lib/decorators.legacy.d.ts
@@ -0,0 +1,4 @@
+declare type ClassDecorator = <TFunction extends Function>(target: TFunction) => TFunction | void;
+declare type PropertyDecorator = (target: Object, propertyKey: string | symbol) => void;
+declare type MethodDecorator = <T>(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<T>) => TypedPropertyDescriptor<T> | void;
+declare type ParameterDecorator = (target: Object, propertyKey: string | symbol, parameterIndex: number) => void;
diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
index 9ed6d1c8a0c56..a74b3cb4c2111 100644
--- a/src/lib/es5.d.ts
+++ b/src/lib/es5.d.ts
@@ -1,3 +1,6 @@
+/// <reference lib="decorators" />
+/// <reference lib="decorators.legacy" />
+
 /////////////////////////////
 /// ECMAScript APIs
 /////////////////////////////
@@ -1483,11 +1486,6 @@ interface TypedPropertyDescriptor<T> {
     set?: (value: T) => void;
 }
 
-declare type ClassDecorator = <TFunction extends Function>(target: TFunction) => TFunction | void;
-declare type PropertyDecorator = (target: Object, propertyKey: string | symbol) => void;
-declare type MethodDecorator = <T>(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<T>) => TypedPropertyDescriptor<T> | void;
-declare type ParameterDecorator = (target: Object, propertyKey: string | symbol, parameterIndex: number) => void;
-
 declare type PromiseConstructorLike = new <T>(executor: (resolve: (value: T | PromiseLike<T>) => void, reject: (reason?: any) => void) => void) => PromiseLike<T>;
 
 interface PromiseLike<T> {
diff --git a/src/lib/libs.json b/src/lib/libs.json
index 0780efe237d71..82ba97aa35fb8 100644
--- a/src/lib/libs.json
+++ b/src/lib/libs.json
@@ -66,6 +66,8 @@
         "es2022.regexp",
         "es2023.array",
         "esnext.intl",
+        "decorators",
+        "decorators.legacy",
         // Default libraries
         "es5.full",
         "es2015.full",
diff --git a/src/services/_namespaces/ts.codefix.ts b/src/services/_namespaces/ts.codefix.ts
index 23e971449be17..5270a0c664e26 100644
--- a/src/services/_namespaces/ts.codefix.ts
+++ b/src/services/_namespaces/ts.codefix.ts
@@ -34,7 +34,6 @@ export * from "../codefixes/fixCannotFindModule";
 export * from "../codefixes/fixClassDoesntImplementInheritedAbstractMember";
 export * from "../codefixes/fixClassSuperMustPrecedeThisAccess";
 export * from "../codefixes/fixConstructorForDerivedNeedSuperCall";
-export * from "../codefixes/fixEnableExperimentalDecorators";
 export * from "../codefixes/fixEnableJsxFlag";
 export * from "../codefixes/fixNaNEquality";
 export * from "../codefixes/fixModuleAndTargetOptions";
diff --git a/src/services/codefixes/fixEnableExperimentalDecorators.ts b/src/services/codefixes/fixEnableExperimentalDecorators.ts
deleted file mode 100644
index 271c9b969118c..0000000000000
--- a/src/services/codefixes/fixEnableExperimentalDecorators.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import {
-    Diagnostics,
-    factory,
-    textChanges,
-    TsConfigSourceFile,
-} from "../_namespaces/ts";
-import {
-    codeFixAll,
-    createCodeFixActionWithoutFixAll,
-    registerCodeFix,
-    setJsonCompilerOptionValue,
-} from "../_namespaces/ts.codefix";
-
-const fixId = "enableExperimentalDecorators";
-const errorCodes = [
-    Diagnostics.Experimental_support_for_decorators_is_a_feature_that_is_subject_to_change_in_a_future_release_Set_the_experimentalDecorators_option_in_your_tsconfig_or_jsconfig_to_remove_this_warning.code
-];
-registerCodeFix({
-    errorCodes,
-    getCodeActions: function getCodeActionsToEnableExperimentalDecorators(context) {
-        const { configFile } = context.program.getCompilerOptions();
-        if (configFile === undefined) {
-            return undefined;
-        }
-
-        const changes = textChanges.ChangeTracker.with(context, changeTracker => doChange(changeTracker, configFile));
-        return [createCodeFixActionWithoutFixAll(fixId, changes, Diagnostics.Enable_the_experimentalDecorators_option_in_your_configuration_file)];
-    },
-    fixIds: [fixId],
-    getAllCodeActions: context => codeFixAll(context, errorCodes, (changes) => {
-        const { configFile } = context.program.getCompilerOptions();
-        if (configFile === undefined) {
-            return undefined;
-        }
-        doChange(changes, configFile);
-    }),
-});
-
-function doChange(changeTracker: textChanges.ChangeTracker, configFile: TsConfigSourceFile) {
-    setJsonCompilerOptionValue(changeTracker, configFile, "experimentalDecorators", factory.createTrue());
-}
diff --git a/src/services/codefixes/generateAccessors.ts b/src/services/codefixes/generateAccessors.ts
index 96bee0d7f458b..54f864722826e 100644
--- a/src/services/codefixes/generateAccessors.ts
+++ b/src/services/codefixes/generateAccessors.ts
@@ -213,7 +213,7 @@ function generateGetAccessor(fieldName: AcceptedNameType, accessorName: Accepted
     return factory.createGetAccessorDeclaration(
         modifiers,
         accessorName,
-        /*parameters*/ undefined!, // TODO: GH#18217
+        [],
         type,
         factory.createBlock([
             factory.createReturnStatement(
diff --git a/src/testRunner/tests.ts b/src/testRunner/tests.ts
index aa8817e7cd049..f014bae90da21 100644
--- a/src/testRunner/tests.ts
+++ b/src/testRunner/tests.ts
@@ -36,6 +36,7 @@ import "./unittests/evaluation/autoAccessors";
 import "./unittests/evaluation/awaiter";
 import "./unittests/evaluation/destructuring";
 import "./unittests/evaluation/externalModules";
+import "./unittests/evaluation/esDecorators";
 import "./unittests/evaluation/forAwaitOf";
 import "./unittests/evaluation/forOf";
 import "./unittests/evaluation/generator";
diff --git a/src/testRunner/unittests/evaluation/esDecorators.ts b/src/testRunner/unittests/evaluation/esDecorators.ts
new file mode 100644
index 0000000000000..1863e9426517e
--- /dev/null
+++ b/src/testRunner/unittests/evaluation/esDecorators.ts
@@ -0,0 +1,2291 @@
+import * as evaluator from "../../_namespaces/evaluator";
+import * as ts from "../../_namespaces/ts";
+import { ScriptTarget } from "../../_namespaces/ts";
+
+describe("unittests:: evaluation:: esDecorators", () => {
+    const options: ts.CompilerOptions = { target: ts.ScriptTarget.ES2021 };
+    const exec = (array: TemplateStringsArray) => evaluator.evaluateTypeScript(array[0], options);
+
+    describe("target", () => {
+        describe("for: class", () => {
+            it("is initial constructor", () => {
+                const { target, C } = exec`
+                    export let target;
+                    export @((t, c) => { target = t }) class C {
+                    }
+                `;
+                assert.strictEqual(target, C);
+            });
+        });
+        describe("for: method", () => {
+            it("is initial method", () => {
+                const { target, C } = exec`
+                    export let target;
+                    export class C {
+                        @((t, c) => { target = t })
+                        static method() {}
+                    }
+                `;
+                assert.strictEqual(target, C.method);
+            });
+        });
+        describe("for: getter", () => {
+            it("is initial getter", () => {
+                const { target, C } = exec`
+                    export let target;
+                    export class C {
+                        @((t, c) => { target = t })
+                        static get x() { return 1; }
+                    }
+                `;
+                assert.strictEqual(target, Object.getOwnPropertyDescriptor(C, "x")!.get);
+            });
+        });
+        describe("for: setter", () => {
+            it("is initial setter", () => {
+                const { target, C } = exec`
+                    export let target;
+                    export class C {
+                        @((t, c) => { target = t })
+                        static set x(v: number) { }
+                    }
+                `;
+                assert.strictEqual(target, Object.getOwnPropertyDescriptor(C, "x")!.set);
+            });
+        });
+        describe("for: field", () => {
+            it("is undefined", () => {
+                const { target } = exec`
+                    export let target;
+                    export class C {
+                        @((t, c) => { target = t })
+                        static x: number;
+                    }
+                `;
+                assert.isUndefined(target);
+            });
+        });
+        describe("for: auto-accessor", () => {
+            it("is { get, set } for initial getter/setter", () => {
+                const { target, C } = exec`
+                    export let target;
+                    export class C {
+                        @((t, c) => { target = t })
+                        static accessor x: number;
+                    }
+                `;
+                assert.isObject(target);
+                assert.deepEqual(Object.keys(target), ["get", "set"]);
+                assert.strictEqual(target.get, Object.getOwnPropertyDescriptor(C, "x")!.get);
+                assert.strictEqual(target.set, Object.getOwnPropertyDescriptor(C, "x")!.set);
+            });
+        });
+    });
+
+    describe("context", () => {
+        describe("for: class", () => {
+            it("is object", () => {
+                const { context } = exec`
+                    export let context;
+                    export @((t, c) => { context = c; }) class C {
+                    }
+                `;
+                assert.isObject(context);
+            });
+        });
+        describe("for: method", () => {
+            it("is object", () => {
+                const { context } = exec`
+                    export let context;
+                    export class C {
+                        @((t, c) => { context = c; })
+                        static method() {}
+                    }
+                `;
+                assert.isObject(context);
+            });
+        });
+        describe("for: getter", () => {
+            it("is object", () => {
+                const { context } = exec`
+                    export let context;
+                    export class C {
+                        @((t, c) => { context = c; })
+                        static get x() { return 1; }
+                    }
+                `;
+                assert.isObject(context);
+            });
+        });
+        describe("for: setter", () => {
+            it("is object", () => {
+                const { context } = exec`
+                    export let context;
+                    export class C {
+                        @((t, c) => { context = c; })
+                        static set x(v: number) {}
+                    }
+                `;
+                assert.isObject(context);
+            });
+        });
+        describe("for: field", () => {
+            it("is object", () => {
+                const { context } = exec`
+                    export let context;
+                    export class C {
+                        @((t, c) => { context = c; })
+                        static x: number;
+                    }
+                `;
+                assert.isObject(context);
+            });
+        });
+        describe("for: auto-accessor", () => {
+            it("is object", () => {
+                const { context } = exec`
+                    export let context;
+                    export class C {
+                        @((t, c) => { context = c; })
+                        static accessor x: number;
+                    }
+                `;
+                assert.isObject(context);
+            });
+        });
+        describe(".kind", () => {
+            describe("for: class", () => {
+                it("is 'class'", () => {
+                    const { context } = exec`
+                        export let context;
+                        export @((t, c) => { context = c; }) class C {
+                        }
+                    `;
+                    assert.strictEqual(context.kind, "class");
+                });
+            });
+            describe("for: method", () => {
+                it("is 'method'", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static method() {}
+                        }
+                    `;
+                    assert.strictEqual(context.kind, "method");
+                });
+            });
+            describe("for: getter", () => {
+                it("is 'getter'", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.strictEqual(context.kind, "getter");
+                });
+            });
+            describe("for: setter", () => {
+                it("is 'setter'", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set x(v: number) {}
+                        }
+                    `;
+                    assert.strictEqual(context.kind, "setter");
+                });
+            });
+            describe("for: field", () => {
+                it("is 'field'", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static x: number;
+                        }
+                    `;
+                    assert.strictEqual(context.kind, "field");
+                });
+            });
+            describe("for: auto-accessor", () => {
+                it("is 'accessor'", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor x: number;
+                        }
+                    `;
+                    assert.strictEqual(context.kind, "accessor");
+                });
+            });
+        });
+        describe(".name", () => {
+            describe("for: class", () => {
+                it("is initial class name", () => {
+                    const { context } = exec`
+                        export let context;
+                        export @((t, c) => { context = c; }) class C {
+                        }
+                    `;
+                    assert.strictEqual(context.name, "C");
+                });
+                it("is 'default' when initial class is unnamed default export", () => {
+                    const { context } = exec`
+                        export let context;
+                        export default @((t, c) => { context = c; }) class {
+                        }
+                    `;
+                    assert.strictEqual(context.name, "default");
+                });
+            });
+            describe("for: method", () => {
+                it("is initial method name string when identifier", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static method() {}
+                        }
+                    `;
+                    assert.strictEqual(context.name, "method");
+                });
+                it("is initial method name string when computed non-symbol", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static [1]() {}
+                        }
+                    `;
+                    assert.strictEqual(context.name, "1");
+                });
+                it("is initial method name symbol when symbol", () => {
+                    const { context, sym } = exec`
+                        export const sym = Symbol();
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static [sym]() {}
+                        }
+                    `;
+                    assert.strictEqual(context.name, sym);
+                });
+                it("is initial method name description string when private", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static #method() {}
+                        }
+                    `;
+                    assert.strictEqual(context.name, "#method");
+                });
+            });
+            describe("for: getter", () => {
+                it("is initial method name string when identifier", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.strictEqual(context.name, "x");
+                });
+                it("is initial method name string when computed non-symbol", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get [1]() { return 1; }
+                        }
+                    `;
+                    assert.strictEqual(context.name, "1");
+                });
+                it("is initial method name symbol when symbol", () => {
+                    const { context, sym } = exec`
+                        export const sym = Symbol();
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get [sym]() { return 1; }
+                        }
+                    `;
+                    assert.strictEqual(context.name, sym);
+                });
+                it("is initial method name description string when private", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get #x() { return 1; }
+                        }
+                    `;
+                    assert.strictEqual(context.name, "#x");
+                });
+            });
+            describe("for: setter", () => {
+                it("is initial method name string when identifier", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set x(v: number) { }
+                        }
+                    `;
+                    assert.strictEqual(context.name, "x");
+                });
+                it("is initial method name string when computed non-symbol", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set [1](v: number) { }
+                        }
+                    `;
+                    assert.strictEqual(context.name, "1");
+                });
+                it("is initial method name symbol when symbol", () => {
+                    const { context, sym } = exec`
+                        export const sym = Symbol();
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set [sym](v: number) { }
+                        }
+                    `;
+                    assert.strictEqual(context.name, sym);
+                });
+                it("is initial method name description string when private", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set #x(v: number) { }
+                        }
+                    `;
+                    assert.strictEqual(context.name, "#x");
+                });
+            });
+            describe("for: field", () => {
+                it("is initial field name string when identifier", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static x: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, "x");
+                });
+                it("is initial field name string when computed non-symbol", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static [1]: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, "1");
+                });
+                it("is initial field name symbol when symbol", () => {
+                    const { context, sym } = exec`
+                        export const sym = Symbol();
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static [sym]: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, sym);
+                });
+                it("is initial field name description string when private", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static #x: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, "#x");
+                });
+            });
+            describe("for: auto-accessor", () => {
+                it("is initial field name string when identifier", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor x: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, "x");
+                });
+                it("is initial field name string when computed non-symbol", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor [1]: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, "1");
+                });
+                it("is initial field name symbol when symbol", () => {
+                    const { context, sym } = exec`
+                        export const sym = Symbol();
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor [sym]: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, sym);
+                });
+                it("is initial field name description string when private", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor #x: number;
+                        }
+                    `;
+                    assert.strictEqual(context.name, "#x");
+                });
+            });
+        });
+        describe(".static", () => {
+            describe("for: class", () => {
+                it("is not set", () => {
+                    const { context } = exec`
+                        export let context;
+                        export @((t, c) => { context = c; }) class C {
+                        }
+                    `;
+                    assert.doesNotHaveAnyKeys(context, ["static"]);
+                });
+            });
+            describe("for: method", () => {
+                it("when static: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static method() {}
+                        }
+                    `;
+                    assert.isTrue(context.static);
+                });
+                it("when instance: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            method() {}
+                        }
+                    `;
+                    assert.isFalse(context.static);
+                });
+            });
+            describe("for: getter", () => {
+                it("when static: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.isTrue(context.static);
+                });
+                it("when instance: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            get x() { return 1; }
+                        }
+                    `;
+                    assert.isFalse(context.static);
+                });
+            });
+            describe("for: setter", () => {
+                it("when static: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set x(v: number) {}
+                        }
+                    `;
+                    assert.isTrue(context.static);
+                });
+                it("when instance: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            set x(v: number) {}
+                        }
+                    `;
+                    assert.isFalse(context.static);
+                });
+            });
+            describe("for: field", () => {
+                it("when static: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static x: number;
+                        }
+                    `;
+                    assert.isTrue(context.static);
+                });
+                it("when instance: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            x: number;
+                        }
+                    `;
+                    assert.isFalse(context.static);
+                });
+            });
+            describe("for: auto-accessor", () => {
+                it("when static: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor x: number;
+                        }
+                    `;
+                    assert.isTrue(context.static);
+                });
+                it("when instance: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            accessor x: number;
+                        }
+                    `;
+                    assert.isFalse(context.static);
+                });
+            });
+        });
+        describe(".private", () => {
+            describe("for: class", () => {
+                it("is not set", () => {
+                    const { context } = exec`
+                        export let context;
+                        export @((t, c) => { context = c; }) class C {}
+                    `;
+                    assert.doesNotHaveAnyKeys(context, ["private"]);
+                });
+            });
+            describe("for: method", () => {
+                it("when private: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            #method() {}
+                        }
+                    `;
+                    assert.isTrue(context.private);
+                });
+                it("when public: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            method() {}
+                        }
+                    `;
+                    assert.isFalse(context.private);
+                });
+            });
+            describe("for: getter", () => {
+                it("when private: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            get #x() { return 1; }
+                        }
+                    `;
+                    assert.isTrue(context.private);
+                });
+                it("when public: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            get x() { return 1; }
+                        }
+                    `;
+                    assert.isFalse(context.private);
+                });
+            });
+            describe("for: setter", () => {
+                it("when private: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            set #x(v: number) {}
+                        }
+                    `;
+                    assert.isTrue(context.private);
+                });
+                it("when public: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            set x(v: number) {}
+                        }
+                    `;
+                    assert.isFalse(context.private);
+                });
+            });
+            describe("for: field", () => {
+                it("when private: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            #x: number;
+                        }
+                    `;
+                    assert.isTrue(context.private);
+                });
+                it("when public: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            x: number;
+                        }
+                    `;
+                    assert.isFalse(context.private);
+                });
+            });
+            describe("for: auto-accessor", () => {
+                it("when private: is true", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            accessor #x: number;
+                        }
+                    `;
+                    assert.isTrue(context.private);
+                });
+                it("when public: is false", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            accessor x: number;
+                        }
+                    `;
+                    assert.isFalse(context.private);
+                });
+            });
+        });
+        // Disabled pending the outcome of https://github.com/tc39/proposal-decorators/issues/494
+        describe.skip(".access", () => {
+            describe("for: class", () => {
+                it("is not set", () => {
+                    const { context } = exec`
+                        export let context;
+                        export @((t, c) => { context = c; }) class C {
+                        }
+                    `;
+                    assert.doesNotHaveAnyKeys(context, ["access"]);
+                });
+            });
+            describe("for: method", () => {
+                it("is { get }", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static method() {}
+                        }
+                    `;
+                    assert.isObject(context.access);
+                    assert.hasAllKeys(context.access, ["get"]);
+                    assert.isFunction(context.access.get);
+                });
+                it("accesses value using 'this'", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static method() {}
+                        }
+                    `;
+                    assert.strictEqual(context.access.get.call(C), C.method);
+
+                    const obj = { method() {} };
+                    assert.strictEqual(context.access.get.call(obj), obj.method);
+                });
+                it("can access value for private name", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static #method() {}
+                        }
+                    `;
+                    assert.isFunction(context.access.get.call(C));
+
+                    const obj = { ["#method"]() {} };
+                    assert.throws(() => context.access.get.call(obj));
+                });
+            });
+            describe("for: getter", () => {
+                it("is { get }", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.isObject(context.access);
+                    assert.hasAllKeys(context.access, ["get"]);
+                    assert.isFunction(context.access.get);
+                });
+                it("accesses value using 'this'", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.strictEqual(context.access.get.call(C), 1);
+
+                    const obj = { x: 2 };
+                    assert.strictEqual(context.access.get.call(obj), 2);
+                });
+                it("can access value for private name", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get #x() { return 1; }
+                        }
+                    `;
+                    assert.strictEqual(context.access.get.call(C), 1);
+
+                    const obj = { "#x": 2 };
+                    assert.throws(() => context.access.get.call(obj));
+                });
+            });
+            describe("for: setter", () => {
+                it("is { set }", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set x(v: number) {}
+                        }
+                    `;
+                    assert.isObject(context.access);
+                    assert.hasAllKeys(context.access, ["set"]);
+                    assert.isFunction(context.access.set);
+                });
+                it("accesses value using 'this'", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set x(v: number) { this.y = v; }
+                            static y: number;
+                        }
+                    `;
+                    context.access.set.call(C, 1);
+                    assert.strictEqual(C.y, 1);
+
+                    const obj = { x: 2 };
+                    context.access.set.call(obj, 3);
+                    assert.strictEqual(obj.x, 3);
+                });
+                it("can access value for private name", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set #x(v: number) {}
+                        }
+                    `;
+                    context.access.set.call(C, 1);
+
+                    const obj = { "#x": 2 };
+                    assert.throws(() => context.access.set.call(obj, 3));
+                });
+            });
+            describe("for: field", () => {
+                it("is { get, set }", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static x: number;
+                        }
+                    `;
+                    assert.isObject(context.access);
+                    assert.hasAllKeys(context.access, ["get", "set"]);
+                    assert.isFunction(context.access.get);
+                    assert.isFunction(context.access.set);
+                });
+                it("accesses value using 'this'", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static x: number = 1;
+                        }
+                    `;
+
+                    assert.strictEqual(context.access.get.call(C), 1);
+                    context.access.set.call(C, 2);
+                    assert.strictEqual(C.x, 2);
+
+                    const obj = { x: 2 };
+                    assert.strictEqual(context.access.get.call(obj), 2);
+                    context.access.set.call(obj, 3);
+                    assert.strictEqual(obj.x, 3);
+                });
+                it("can access value for private name", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static #x: number = 1;
+                            static getX() { return this.#x; }
+                        }
+                    `;
+
+                    assert.strictEqual(context.access.get.call(C), 1);
+                    context.access.set.call(C, 2);
+                    assert.strictEqual(C.getX(), 2);
+
+                    const obj = { "#x": 2 };
+                    assert.throws(() => context.access.get.call(obj));
+                    assert.throws(() => context.access.set.call(obj, 3));
+                });
+            });
+            describe("for: auto-accessor", () => {
+                it("is { get, set }", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor x: number;
+                        }
+                    `;
+                    assert.hasAllKeys(context.access, ["get", "set"]);
+                    assert.isFunction(context.access.get);
+                    assert.isFunction(context.access.set);
+                });
+                it("accesses value using 'this'", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor x: number = 1;
+                        }
+                    `;
+
+                    assert.strictEqual(context.access.get.call(C), 1);
+                    context.access.set.call(C, 2);
+                    assert.strictEqual(C.x, 2);
+
+                    const obj = { x: 2 };
+                    assert.strictEqual(context.access.get.call(obj), 2);
+                    context.access.set.call(obj, 3);
+                    assert.strictEqual(obj.x, 3);
+                });
+                it("can access value for private name", () => {
+                    const { context, C } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor #x: number = 1;
+                            static getX() { return this.#x; }
+                        }
+                    `;
+
+                    assert.strictEqual(context.access.get.call(C), 1);
+                    context.access.set.call(C, 2);
+                    assert.strictEqual(C.getX(), 2);
+
+                    const obj = { "#x": 2 };
+                    assert.throws(() => context.access.get.call(obj));
+                    assert.throws(() => context.access.set.call(obj, 3));
+                });
+            });
+        });
+        describe(".addInitializer", () => {
+            describe("for: class", () => {
+                it("is function", () => {
+                    const { context } = exec`
+                        export let context;
+                        export @((t, c) => { context = c; }) class C {
+                        }
+                    `;
+                    assert.isFunction(context.addInitializer);
+                });
+                it("can add multiple", () => {
+                    const { order } = exec`
+                        export const order = [];
+                        export @((t, c) => {
+                            c.addInitializer(() => { order.push("a"); });
+                            c.addInitializer(() => { order.push("b"); });
+                        }) class C {
+                        }
+                    `;
+                    assert.deepEqual(order, ["a", "b"]);
+                });
+                it("argument must be function", () => {
+                    // Currently underspecified. Proposed here: https://github.com/tc39/ecma262/pull/2417#discussion_r873163887
+                    const { main } = exec`
+                        export const main = value => {
+                            @((t, c) => { c.addInitializer(value); }) class C {
+                            }
+                        };
+                    `;
+                    assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                    assert.throws(() => main(/*value*/ undefined));
+                    assert.throws(() => main(123));
+                    assert.throws(() => main("abc"));
+                });
+                it("cannot call after decoration", () => {
+                    const { context } = exec`
+                        export let context;
+                        @((t, c) => { context = c; }) class C {
+                        }
+                    `;
+                    assert.throws(() => context.addInitializer(() => { }));
+                });
+            });
+            describe("for: method", () => {
+                it("is function", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static method() {}
+                        }
+                    `;
+                    assert.isFunction(context.addInitializer);
+                });
+                it("can add multiple", () => {
+                    const { order } = exec`
+                        export const order = [];
+                        export class C {
+                            @((t, c) => {
+                                c.addInitializer(() => { order.push("a"); });
+                                c.addInitializer(() => { order.push("b"); });
+                            })
+                            static method() {}
+                        }
+                    `;
+                    assert.deepEqual(order, ["a", "b"]);
+                });
+                it("argument must be function", () => {
+                    // Currently underspecified. Proposed here: https://github.com/tc39/ecma262/pull/2417#discussion_r873163887
+                    const { main } = exec`
+                        export const main = value => {
+                            class C {
+                                @((t, c) => { c.addInitializer(value); })
+                                static method() {}
+                            }
+                        };
+                    `;
+                    assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                    assert.throws(() => main(/*value*/ undefined));
+                    assert.throws(() => main(123));
+                    assert.throws(() => main("abc"));
+                });
+                it("cannot call after decoration", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static method() {}
+                        }
+                    `;
+                    assert.throws(() => context.addInitializer(() => { }));
+                });
+                describe("when: static", () => {
+                    it("extra initializers run once", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                static method() {}
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra"]);
+                    });
+                });
+                describe("when: instance", () => {
+                    it("extra initializers run each time constructor runs", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                method() {}
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        assert.deepEqual(order, []);
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra", "extra"]);
+                    });
+                });
+            });
+            describe("for: getter", () => {
+                it("is function", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.isFunction(context.addInitializer);
+                });
+                it("can add multiple", () => {
+                    const { order } = exec`
+                        export const order = [];
+                        export class C {
+                            @((t, c) => {
+                                c.addInitializer(() => { order.push("a"); });
+                                c.addInitializer(() => { order.push("b"); });
+                            })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.deepEqual(order, ["a", "b"]);
+                });
+                it("argument must be function", () => {
+                    // Currently underspecified. Proposed here: https://github.com/tc39/ecma262/pull/2417#discussion_r873163887
+                    const { main } = exec`
+                        export const main = value => {
+                            class C {
+                                @((t, c) => { c.addInitializer(value); })
+                                static get x() { return 1; }
+                            }
+                        };
+                    `;
+                    assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                    assert.throws(() => main(/*value*/ undefined));
+                    assert.throws(() => main(123));
+                    assert.throws(() => main("abc"));
+                });
+                it("cannot call after decoration", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static get x() { return 1; }
+                        }
+                    `;
+                    assert.throws(() => context.addInitializer(() => { }));
+                });
+                describe("when: static", () => {
+                    it("extra initializers run once", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                static get x() { return 1; }
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra"]);
+                    });
+                });
+                describe("when: instance", () => {
+                    it("extra initializers run each time constructor runs", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                get x() { return 1; }
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        assert.deepEqual(order, []);
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra", "extra"]);
+                    });
+                });
+            });
+            describe("for: setter", () => {
+                it("is function", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set x(v: number) {}
+                        }
+                    `;
+                    assert.isFunction(context.addInitializer);
+                });
+                it("can add multiple", () => {
+                    const { order } = exec`
+                        export const order = [];
+                        export class C {
+                            @((t, c) => {
+                                c.addInitializer(() => { order.push("a"); });
+                                c.addInitializer(() => { order.push("b"); });
+                            })
+                            static set x(v: number) {}
+                        }
+                    `;
+                    assert.deepEqual(order, ["a", "b"]);
+                });
+                it("argument must be function", () => {
+                    // Currently underspecified. Proposed here: https://github.com/tc39/ecma262/pull/2417#discussion_r873163887
+                    const { main } = exec`
+                        export const main = value => {
+                            class C {
+                                @((t, c) => { c.addInitializer(value); })
+                                static set x(v: number) {}
+                            }
+                        };
+                    `;
+                    assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                    assert.throws(() => main(/*value*/ undefined));
+                    assert.throws(() => main(123));
+                    assert.throws(() => main("abc"));
+                });
+                it("cannot call after decoration", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static set x(v: number) {}
+                        }
+                    `;
+                    assert.throws(() => context.addInitializer(() => { }));
+                });
+                describe("when: static", () => {
+                    it("extra initializers run once", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                static set x(v: number) {}
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra"]);
+                    });
+                });
+                describe("when: instance", () => {
+                    it("extra initializers run each time constructor runs", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                set x(v: number) {}
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        assert.deepEqual(order, []);
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra", "extra"]);
+                    });
+                });
+            });
+            describe("for: field", () => {
+                it("is function", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static x: number;
+                        }
+                    `;
+                    assert.isFunction(context.addInitializer);
+                });
+                it("can add multiple", () => {
+                    const { order } = exec`
+                        export const order = [];
+                        export class C {
+                            @((t, c) => {
+                                c.addInitializer(() => { order.push("a"); });
+                                c.addInitializer(() => { order.push("b"); });
+                            })
+                            static x: number;
+                        }
+                    `;
+                    assert.deepEqual(order, ["a", "b"]);
+                });
+                it("argument must be function", () => {
+                    // Currently underspecified. Proposed here: https://github.com/tc39/ecma262/pull/2417#discussion_r873163887
+                    const { main } = exec`
+                        export const main = value => {
+                            class C {
+                                @((t, c) => { c.addInitializer(value); })
+                                static x: number;
+                            }
+                        };
+                    `;
+                    assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                    assert.throws(() => main(/*value*/ undefined));
+                    assert.throws(() => main(123));
+                    assert.throws(() => main("abc"));
+                });
+                it("cannot call after decoration", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static x: number;
+                        }
+                    `;
+                    assert.throws(() => context.addInitializer(() => { }));
+                });
+                describe("when: static", () => {
+                    it("extra initializers run once", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                static x: number;
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra"]);
+                    });
+                });
+                describe("when: instance", () => {
+                    it("extra initializers run each time constructor runs", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                x: number;
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        assert.deepEqual(order, []);
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra", "extra"]);
+                    });
+                });
+            });
+            describe("for: auto-accessor", () => {
+                it("is function", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor x: number;
+                        }
+                    `;
+                    assert.isFunction(context.addInitializer);
+                });
+                it("can add multiple", () => {
+                    const { order } = exec`
+                        export const order = [];
+                        export class C {
+                            @((t, c) => {
+                                c.addInitializer(() => { order.push("a"); });
+                                c.addInitializer(() => { order.push("b"); });
+                            })
+                            static accessor x: number;
+                        }
+                    `;
+                    assert.deepEqual(order, ["a", "b"]);
+                });
+                it("argument must be function", () => {
+                    // Currently underspecified. Proposed here: https://github.com/tc39/ecma262/pull/2417#discussion_r873163887
+                    const { main } = exec`
+                        export const main = value => {
+                            class C {
+                                @((t, c) => { c.addInitializer(value); })
+                                static accessor x: number;
+                            }
+                        };
+                    `;
+                    assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                    assert.throws(() => main(/*value*/ undefined));
+                    assert.throws(() => main(123));
+                    assert.throws(() => main("abc"));
+                });
+                it("cannot call after decoration", () => {
+                    const { context } = exec`
+                        export let context;
+                        export class C {
+                            @((t, c) => { context = c; })
+                            static accessor x: number;
+                        }
+                    `;
+                    assert.throws(() => context.addInitializer(() => { }));
+                });
+                describe("when: static", () => {
+                    it("extra initializers run once", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                static accessor x: number;
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra"]);
+                    });
+                });
+                describe("when: instance", () => {
+                    it("extra initializers run each time constructor runs", () => {
+                        const { order, main } = exec`
+                            export const order = [];
+                            class C {
+                                @((t, c) => { c.addInitializer(() => { order.push("extra"); }); })
+                                accessor x: number;
+                            }
+                            export const main = () => { new C(); }
+                        `;
+                        assert.deepEqual(order, []);
+                        main();
+                        main();
+                        assert.deepEqual(order, ["extra", "extra"]);
+                    });
+                });
+            });
+        });
+    });
+
+    describe("decorator evaluation", () => {
+        describe("for: class", () => {
+            it("may return undefined", () => {
+                const { main } = exec`
+                    export const main = () => {
+                        @((t, c) => undefined) class C {
+                        }
+                    };
+                `;
+                assert.doesNotThrow(main);
+            });
+            it("may return a different function", () => {
+                const { C1, C2 } = exec`
+                    export class C1 {}
+                    export @((t, c) => C1) class C2 {
+                    }
+                `;
+                assert.strictEqual(C2, C1);
+            });
+            it("may not return non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        @((t, c) => value) class C2 {
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+            describe("redirects private static", () => {
+                it("when: field", () => {
+                    const { C } = exec`
+                        export @((t: any, c): any => class extends t {}) class C {
+                            static #x = 1;
+                            static g() {
+                                this.#x = this.#x + 1;
+                                this.#x++;
+                                return this.#x;
+                            }
+                        }
+                    `;
+                    assert.strictEqual(C.g(), 3);
+                });
+            });
+        });
+        describe("for: method", () => {
+            it("may return undefined", () => {
+                const { main } = exec`
+                    export const main = () => {
+                        class C {
+                            @((t, c) => undefined)
+                            static method() {}
+                        }
+                    };
+                `;
+                assert.doesNotThrow(main);
+            });
+            it("may return a different function", () => {
+                const { C, replacement } = exec`
+                    export function replacement() {}
+                    export class C {
+                        @((t, c) => replacement) method() {}
+                    }
+                `;
+                assert.strictEqual(C.prototype.method, replacement);
+            });
+            it("may not return non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => value) method() {}
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+        });
+        describe("for: getter", () => {
+            it("may return undefined", () => {
+                const { main } = exec`
+                    export const main = () => {
+                        class C {
+                            @((t, c) => undefined)
+                            static get x() { return 1; }
+                        }
+                    };
+                `;
+                assert.doesNotThrow(main);
+            });
+            it("may return a different function", () => {
+                const { C, replacement } = exec`
+                    export function replacement() { return 2; }
+                    export class C {
+                        @((t, c) => replacement)
+                        static get x() { return 1; }
+                    }
+                `;
+                assert.strictEqual(Object.getOwnPropertyDescriptor(C, "x")!.get, replacement);
+            });
+            it("may not return non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => value)
+                            get x() { return 1; }
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+        });
+        describe("for: setter", () => {
+            it("may return undefined", () => {
+                const { main } = exec`
+                    export const main = () => {
+                        class C {
+                            @((t, c) => undefined)
+                            static set x(v: number) {}
+                        }
+                    };
+                `;
+                assert.doesNotThrow(main);
+            });
+            it("may return a different function", () => {
+                const { C, replacement } = exec`
+                    export function replacement() { return 2; }
+                    export class C {
+                        @((t, c) => replacement)
+                        static set x(v: number) {}
+                    }
+                `;
+                assert.strictEqual(Object.getOwnPropertyDescriptor(C, "x")!.set, replacement);
+            });
+            it("may not return non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => value)
+                            static set x(v: number) {}
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+        });
+        describe("for: field", () => {
+            it("may return undefined", () => {
+                const { main } = exec`
+                    export const main = () => {
+                        class C {
+                            @((t, c) => undefined)
+                            static x: number;
+                        }
+                    };
+                `;
+                assert.doesNotThrow(main);
+            });
+            it("may return function to inject initializer pipe-through function", () => {
+                const { C } = exec`
+                    export class C {
+                        @((t, c) => x => x + 1)
+                        static x: number = 1;
+                    }
+                `;
+                assert.strictEqual(C.x, 2);
+            });
+            it("undefined initializer works", () => {
+                const { C } = exec`
+                    export class C {
+                        @((t, c) => () => 2)
+                        static x: any;
+                    }
+                `;
+                assert.strictEqual(C.x, 2);
+            });
+            it("multiple initializer pipe-throughs applied in reverse order", () => {
+                const { C } = exec`
+                    function initializer(x) { return x + 1; }
+                    export class C {
+                        @((t, c) => x => [...x, 3])
+                        @((t, c) => x => [...x, 2])
+                        static x: number[] = [1];
+                    }
+                `;
+                assert.deepEqual(C.x, [1, 2, 3]);
+            });
+            it("may not return non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => value)
+                            static x: number;
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+        });
+        describe("for: auto-accessor", () => {
+            it("may return undefined", () => {
+                const { main } = exec`
+                    export const main = () => {
+                        class C {
+                            @((t, c) => undefined)
+                            static accessor x: number;
+                        }
+                    };
+                `;
+                assert.doesNotThrow(main);
+            });
+            it("may return { get } to replace getter", () => {
+                const { C, replacement } = exec`
+                    export function replacement() { return 2; }
+                    export class C {
+                        @((t, c) => ({ get: replacement }))
+                        static accessor x: number;
+                    }
+                `;
+                assert.strictEqual(Object.getOwnPropertyDescriptor(C, "x")!.get, replacement);
+                assert.isFunction(Object.getOwnPropertyDescriptor(C, "x")!.set);
+            });
+            it("may return { set } to replace setter", () => {
+                const { C, replacement } = exec`
+                    export function replacement(v: number) { }
+                    export class C {
+                        @((t, c) => ({ set: replacement }))
+                        static accessor x: number;
+                    }
+                `;
+                assert.strictEqual(Object.getOwnPropertyDescriptor(C, "x")!.set, replacement);
+                assert.isFunction(Object.getOwnPropertyDescriptor(C, "x")!.get);
+            });
+            it("may return { init } to inject initializer pipe-through function ", () => {
+                const { C } = exec`
+                    export class C {
+                        @((t, c) => ({ init: x => x + 1 }))
+                        static accessor x: number = 1;
+                    }
+                `;
+                assert.strictEqual(C.x, 2);
+            });
+            it("multiple initializer pipe-throughs applied in reverse order", () => {
+                const { C } = exec`
+                    function initializer(x) { return x + 1; }
+                    export class C {
+                        @((t, c) => ({ init: x => [...x, 3] }))
+                        @((t, c) => ({ init: x => [...x, 2] }))
+                        static accessor x: number[] = [1];
+                    }
+                `;
+                assert.deepEqual(C.x, [1, 2, 3]);
+            });
+            it("may not return non-object, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => value)
+                            static accessor x: number;
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+            it("may not return { get } with non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => ({ get: value }))
+                            static accessor x: number;
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+            it("may not return { set } with non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => ({ set: value }))
+                            static accessor x: number;
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+            it("may not return { init } with non-function, non-undefined", () => {
+                const { main } = exec`
+                    export const main = value => {
+                        class C {
+                            @((t, c) => ({ init: value }))
+                            static accessor x: number;
+                        }
+                    };
+                `;
+                assert.throws(() => main(/*value*/ null)); // eslint-disable-line no-null/no-null
+                assert.throws(() => main(1));
+                assert.throws(() => main("abc"));
+            });
+        });
+    });
+
+    const nodeVersion = ts.Version.tryParse(process.version);
+    const supportsClassStaticBlock = nodeVersion && nodeVersion.major >= 16;
+
+    const targets = [
+        // NOTE: Class static blocks weren't supported in Node v14
+        ...(supportsClassStaticBlock ? [ScriptTarget.ES2022] : []),
+        ScriptTarget.ES2021,
+        ScriptTarget.ES2015,
+    ];
+
+    for (const target of targets) {
+        const targetName = ts.Debug.formatEnum(target, (ts as any).ScriptTarget);
+        const options: ts.CompilerOptions = { target };
+        const exec = (array: TemplateStringsArray) => evaluator.evaluateTypeScript(array[0], options);
+
+        it(`class definition evaluation order (${targetName})`, () => {
+            const { order } = exec`
+                export const order = [];
+
+                class Base {
+                    constructor() {
+                        order.push("superclass construction");
+                    }
+                }
+
+                @(order.push("class decorator evaluation 1"), ((t, c) => {
+                    order.push("class decorator application 1");
+                    c.addInitializer(() => {
+                        order.push("class extra initializer evaluation 1a");
+                    });
+                    c.addInitializer(() => {
+                        order.push("class extra initializer evaluation 1b");
+                    });
+                }))
+                @(order.push("class decorator evaluation 2"), ((t, c) => {
+                    order.push("class decorator application 2");
+                    c.addInitializer(() => {
+                        order.push("class extra initializer evaluation 2a");
+                    });
+                    c.addInitializer(() => {
+                        order.push("class extra initializer evaluation 2b");
+                    });
+                }))
+                class Derived extends (order.push("heritage clause evaluation"), Base) {
+                    static {
+                        order.push("static block evaluation");
+                    }
+
+                    @(order.push("static field decorator evaluation 1"), ((t, c) => {
+                        order.push("static field decorator application 1");
+                        c.addInitializer(() => {
+                            order.push("static field extra initializer evaluation 1a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("static field extra initializer evaluation 1b");
+                        });
+                        return x => {
+                            order.push("static field injected initializer evaluation 1");
+                            return x;
+                        };
+                    }))
+                    @(order.push("static field decorator evaluation 2"), ((t, c) => {
+                        order.push("static field decorator application 2");
+                        c.addInitializer(() => {
+                            order.push("static field extra initializer evaluation 2a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("static field extra initializer evaluation 2b");
+                        });
+                        return x => {
+                            order.push("static field injected initializer evaluation 2");
+                            return x;
+                        };
+                    }))
+                    static z = order.push("static field initializer evaluation");
+
+                    static [(order.push("static computed property name evaluation"), "y")]() {}
+
+                    @(order.push("instance field decorator evaluation 1"), ((t, c) => {
+                        order.push("instance field decorator application 1");
+                        c.addInitializer(() => {
+                            order.push("instance field extra initializer evaluation 1a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("instance field extra initializer evaluation 1b");
+                        });
+                        return x => {
+                            order.push("instance field injected initializer evaluation 1");
+                            return x;
+                        };
+                    }))
+                    @(order.push("instance field decorator evaluation 2"), ((t, c) => {
+                        order.push("instance field decorator application 2");
+                        c.addInitializer(() => {
+                            order.push("instance field extra initializer evaluation 2a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("instance field extra initializer evaluation 2b");
+                        });
+                        return x => {
+                            order.push("instance field injected initializer evaluation 2");
+                            return x;
+                        };
+                    }))
+                    a = order.push("instance field initializer evaluation");
+
+                    [(order.push("instance computed property name evaluation"), "b")]() {}
+
+                    constructor() {
+                        order.push("pre-super constructor evaluation");
+                        super();
+                        order.push("post-super constructor evaluation");
+                    }
+
+                    @(order.push("static method decorator evaluation 1"), ((t, c) => {
+                        order.push("static method decorator application 1");
+                        c.addInitializer(() => {
+                            order.push("static method extra initializer evaluation 1a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("static method extra initializer evaluation 1b");
+                        });
+                    }))
+                    @(order.push("static method decorator evaluation 2"), ((t, c) => {
+                        order.push("static method decorator application 2");
+                        c.addInitializer(() => {
+                            order.push("static method extra initializer evaluation 2a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("static method extra initializer evaluation 2b");
+                        });
+                    }))
+                    static x() {}
+
+                    @(order.push("static auto-accessor decorator evaluation 1"), ((t, c) => {
+                        order.push("static auto-accessor decorator application 1");
+                        c.addInitializer(() => {
+                            order.push("static auto-accessor extra initializer evaluation 1a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("static auto-accessor extra initializer evaluation 1b");
+                        });
+                        return {
+                            init: x => {
+                                order.push("static auto-accessor injected initializer evaluation 1");
+                                return x;
+                            }
+                        };
+                    }))
+                    @(order.push("static auto-accessor decorator evaluation 2"), ((t, c) => {
+                        order.push("static auto-accessor decorator application 2");
+                        c.addInitializer(() => {
+                            order.push("static auto-accessor extra initializer evaluation 2a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("static auto-accessor extra initializer evaluation 2b");
+                        });
+                        return {
+                            init: x => {
+                                order.push("static auto-accessor injected initializer evaluation 2");
+                                return x;
+                            }
+                        };
+                    }))
+                    static accessor w = order.push("static auto-accessor initializer evaluation");
+
+                    @(order.push("instance method decorator evaluation 1"), ((t, c) => {
+                        order.push("instance method decorator application 1");
+                        c.addInitializer(() => {
+                            order.push("instance method extra initializer evaluation 1a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("instance method extra initializer evaluation 1b");
+                        });
+                    }))
+                    @(order.push("instance method decorator evaluation 2"), ((t, c) => {
+                        order.push("instance method decorator application 2");
+                        c.addInitializer(() => {
+                            order.push("instance method extra initializer evaluation 2a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("instance method extra initializer evaluation 2b");
+                        });
+                    }))
+                    c() {}
+
+                    @(order.push("instance auto-accessor decorator evaluation 1"), ((t, c) => {
+                        order.push("instance auto-accessor decorator application 1");
+                        c.addInitializer(() => {
+                            order.push("instance auto-accessor extra initializer evaluation 1a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("instance auto-accessor extra initializer evaluation 1b");
+                        });
+                        return {
+                            init: x => {
+                                order.push("instance auto-accessor injected initializer evaluation 1");
+                                return x;
+                            }
+                        };
+                    }))
+                    @(order.push("instance auto-accessor decorator evaluation 2"), ((t, c) => {
+                        order.push("instance auto-accessor decorator application 2");
+                        c.addInitializer(() => {
+                            order.push("instance auto-accessor extra initializer evaluation 2a");
+                        });
+                        c.addInitializer(() => {
+                            order.push("instance auto-accessor extra initializer evaluation 2b");
+                        });
+                        return {
+                            init: x => {
+                                order.push("instance auto-accessor injected initializer evaluation 2");
+                                return x;
+                            }
+                        };
+                    }))
+                    accessor d = order.push("instance auto-accessor initializer evaluation");
+                }
+
+                order.push("instance construction");
+                new Derived();
+                order.push("done");
+            `;
+
+            // TODO: static private method and field evaluation order when that is supported.
+            assert.deepEqual(order, [
+                // first, we evaluate the class decorator expressions and heritage clause in document order:
+                "class decorator evaluation 1",
+                "class decorator evaluation 2",
+                "heritage clause evaluation",
+
+                // next, we evaluate decorators interleaved with computed property names in document order:
+                "static field decorator evaluation 1",
+                "static field decorator evaluation 2",
+                "static computed property name evaluation",
+                "instance field decorator evaluation 1",
+                "instance field decorator evaluation 2",
+                "instance computed property name evaluation",
+                "static method decorator evaluation 1",
+                "static method decorator evaluation 2",
+                "static auto-accessor decorator evaluation 1",
+                "static auto-accessor decorator evaluation 2",
+                "instance method decorator evaluation 1",
+                "instance method decorator evaluation 2",
+                "instance auto-accessor decorator evaluation 1",
+                "instance auto-accessor decorator evaluation 2",
+                // NOTE: at this point, all of the class elements have been collected.
+
+                // next, for each static method, in document order, we apply that method's decorators in reverse order:
+                "static method decorator application 2",
+                "static method decorator application 1",
+                "static auto-accessor decorator application 2",
+                "static auto-accessor decorator application 1",
+                // NOTE: at this point, all non-private static methods are defined on the class.
+
+                // next, for each instance method, in document order, we apply that method's decorators in reverse order:
+                "instance method decorator application 2",
+                "instance method decorator application 1",
+                "instance auto-accessor decorator application 2",
+                "instance auto-accessor decorator application 1",
+                // NOTE: at this point, all non-private instance methods are defined on the prototype.
+
+                // next, for each static field, in document order, we apply that field's decorators in reverse order:
+                "static field decorator application 2",
+                "static field decorator application 1",
+                // NOTE: at this point, static fields have not yet been applied
+
+                // next, for each instance field, in document order, we apply that field's decorators in reverse order:
+                "instance field decorator application 2",
+                "instance field decorator application 1",
+                // NOTE: at this point, instance fields have not yet been applied
+
+                // next, apply class decorators in reverse order:
+                "class decorator application 2",
+                "class decorator application 1",
+                // NOTE: at this point, any constructor replacement has occurred.
+                // NOTE: at this point the local class binding (i.e., the class name) has been initialized and can be
+                //       referenced
+                // NOTE: at this point, static private methods will be installed (TODO: on the replacement class)
+
+                // next, static extra initializers are applied in the order they were added (i.e., methods before fields,
+                // reverse order of decorator evaluation) and are applied to the replacement class.
+                "static method extra initializer evaluation 2a",
+                "static method extra initializer evaluation 2b",
+                "static method extra initializer evaluation 1a",
+                "static method extra initializer evaluation 1b",
+                "static auto-accessor extra initializer evaluation 2a",
+                "static auto-accessor extra initializer evaluation 2b",
+                "static auto-accessor extra initializer evaluation 1a",
+                "static auto-accessor extra initializer evaluation 1b",
+                "static field extra initializer evaluation 2a",
+                "static field extra initializer evaluation 2b",
+                "static field extra initializer evaluation 1a",
+                "static field extra initializer evaluation 1b",
+
+                // next, static initializers (i.e., fields, auto-accessors, and static blocks) are evaluated in document
+                // order and applied to the replacement class:
+                "static block evaluation",
+                "static field initializer evaluation",
+                "static field injected initializer evaluation 2",
+                "static field injected initializer evaluation 1",
+                "static auto-accessor initializer evaluation",
+                "static auto-accessor injected initializer evaluation 2",
+                "static auto-accessor injected initializer evaluation 1",
+                // NOTE: at this point, static private fields will be installed (TODO: on the replacement class)
+
+                // finally, class extra initializers are applied in the order they were added (i.e., methods before fields,
+                // reverse order of decorator evaluation).
+                "class extra initializer evaluation 2a",
+                "class extra initializer evaluation 2b",
+                "class extra initializer evaluation 1a",
+                "class extra initializer evaluation 1b",
+                // NOTE: at this point, class definition evaluation has finished.
+
+                // now we move on to construction:
+                "instance construction",
+
+                // first, statements before `super()` are evaluated:
+                "pre-super constructor evaluation",
+                // NOTE: at this point `this` is still not yet bound.
+
+                // next, statements in the superclass constructor are evaluated:
+                "superclass construction",
+                // NOTE: as we return from the `super()` call, we start instance field initialization.
+                // NOTE: at this point, `this` is bound.
+                // NOTE: at this point, instance private methods are installed.
+
+                // next, instance extra initializers are applied in the order they were added (i.e., methods before fields,
+                // reverse order of decorator evaluation).
+                "instance method extra initializer evaluation 2a",
+                "instance method extra initializer evaluation 2b",
+                "instance method extra initializer evaluation 1a",
+                "instance method extra initializer evaluation 1b",
+                "instance auto-accessor extra initializer evaluation 2a",
+                "instance auto-accessor extra initializer evaluation 2b",
+                "instance auto-accessor extra initializer evaluation 1a",
+                "instance auto-accessor extra initializer evaluation 1b",
+                "instance field extra initializer evaluation 2a",
+                "instance field extra initializer evaluation 2b",
+                "instance field extra initializer evaluation 1a",
+                "instance field extra initializer evaluation 1b",
+
+                // next, instance initializers (i.e., fields, auto-accessors, and static blocks) are evaluated in document
+                // order:
+                "instance field initializer evaluation",
+                "instance field injected initializer evaluation 2",
+                "instance field injected initializer evaluation 1",
+                "instance auto-accessor initializer evaluation",
+                "instance auto-accessor injected initializer evaluation 2",
+                "instance auto-accessor injected initializer evaluation 1",
+                // NOTE: at this point, instance private fields will be installed.
+
+                // finally, statements in the constructor after the call to `super()` are evaluated:
+                "post-super constructor evaluation",
+
+                // and now evaluation has completed:
+                "done"
+            ]);
+        });
+
+        describe("examples", () => {
+            // see https://github.com/tc39/proposal-decorators#classes
+            it(`@logged (${targetName})`, () => {
+                const { output } = exec`
+                    export const output: string[] = [];
+
+                    function log(s: string) {
+                        output.push(s);
+                    }
+
+                    function logged<T extends abstract new (...args: any) => any>(target: T, context: ClassDecoratorContext<T>): T | void;
+                    function logged<This, T extends (this: This, ...args: any) => any>(target: T, context: ClassMethodDecoratorContext<This, T>): T | void;
+                    function logged<This, T>(target: (this: This) => T, context: ClassGetterDecoratorContext<This, T>): (this: This) => T;
+                    function logged<This, T>(target: (this: This, value: T) => void, context: ClassSetterDecoratorContext<This, T>): (this: This, value: T) => void;
+                    function logged<This, T>(target: ClassAccessorDecoratorTarget<This, T>, context: ClassAccessorDecoratorContext<This, T>): ClassAccessorDecoratorResult<This, T> | void;
+                    function logged(target: any, context: DecoratorContext): any {
+                        switch (context.kind) {
+                            case "class": {
+                                const name = context.name ?? "(anonymous)";
+                                return class extends target {
+                                    constructor(...args: any) {
+                                        log("constructor " + name + " enter");
+                                        try {
+                                            super(...args);
+                                        }
+                                        finally {
+                                            log("constructor " + name + " exit");
+                                        }
+                                    }
+                                };
+                            }
+                            case "method":
+                            case "getter":
+                            case "setter": {
+                                const name = context.name.toString();
+                                const kind = context.kind;
+                                return function (this: any, ...args: any) {
+                                    log(kind + " " + name + " enter");
+                                    try {
+                                        return target.apply(this, args);
+                                    }
+                                    finally {
+                                        log(kind + " " + name + " exit");
+                                    }
+                                }
+                            }
+                            case "accessor": {
+                                const name = context.name.toString();
+                                return {
+                                    get: function (this: any) {
+                                        log("accessor(get) " + name + " enter");
+                                        try {
+                                            return target.get.call(this);
+                                        }
+                                        finally {
+                                            log("accessor(get) " + name + " exit");
+                                        }
+                                    },
+                                    set: function (this: any, value: any) {
+                                        log("accessor(set) " + name + " enter");
+                                        try {
+                                            target.set.call(this, value);
+                                        }
+                                        finally {
+                                            log("accessor(set) " + name + " exit");
+                                        }
+                                    }
+                                };
+                            }
+                            default:
+                                throw new TypeError("Not supported");
+                        }
+                    }
+
+                    @logged
+                    class C {
+                        constructor() {
+                            log("C body");
+                        }
+
+                        @logged m() {
+                            log("m body");
+                        }
+
+                        @logged get x() {
+                            log("get x body");
+                            return 0;
+                        }
+
+                        @logged set y(value: number) {
+                            log("set y body");
+                        }
+
+                        @logged accessor z = 0;
+                    }
+
+                    const obj = new C();
+                    obj.m();
+                    obj.x;
+                    obj.y = 1;
+                    obj.z = 2;
+                `;
+
+                assert.deepEqual(output, [
+                    "constructor C enter",
+                    "C body",
+                    "constructor C exit",
+                    "method m enter",
+                    "m body",
+                    "method m exit",
+                    "getter x enter",
+                    "get x body",
+                    "getter x exit",
+                    "setter y enter",
+                    "set y body",
+                    "setter y exit",
+                    "accessor(set) z enter",
+                    "accessor(set) z exit",
+                ]);
+            });
+
+            // see https://github.com/tc39/proposal-decorators#example-bound
+            it(`@bound (${targetName})`, () => {
+                const { output } = exec`
+                    export const output: string[] = [];
+
+                    type MatchingKeys<TRecord, TMatch, K extends keyof TRecord = keyof TRecord> = K extends (TRecord[K] extends TMatch ? K : never) ? K : never;
+                    type Method<This, A extends any[], T> = (this: This, ...args: A) => T;
+
+                    function bound<This, A extends any[], T, K extends MatchingKeys<This, Method<This, A, T>>>(
+                        target: Method<This, A, T>,
+                        { addInitializer, name }: Omit<ClassMethodDecoratorContext<This, Method<This, A, T>>, "name"> & { name: K, private: false }
+                    ): void {
+                        addInitializer(function (this: This) {
+                            const method = this[name] as Method<This, A, T>;
+                            const boundMethod = method.bind(this) as Method<undefined, A, T>;
+                            this[name] = boundMethod as typeof this[K];
+                        });
+                    }
+
+                    class C {
+                        constructor(private message: string) {}
+
+                        @bound speak() {
+                            output.push(this.message);
+                        }
+                    }
+
+                    const { speak } = new C("test");
+                    speak();
+                `;
+
+                assert.deepEqual(output, ["test"]);
+            });
+
+            // see https://github.com/tc39/proposal-decorators#access-and-metadata-sidechanneling
+            // Disabled, pending the outcome of https://github.com/tc39/proposal-decorators/issues/494
+            it.skip(`dependency injection (${targetName})`, () => {
+                const { result } = exec`
+                    const INJECTIONS = new WeakMap<object, { injectionKey: string, set: (this: any, value: any) => void }[]>();
+
+                    function createInjections() {
+                        const injections: { injectionKey: string, set: (this: any, value: any) => void }[] = [];
+
+                        function injectable<T extends new (...args: any) => any>(Class: T, context: ClassDecoratorContext<T>) {
+                            INJECTIONS.set(Class, injections);
+                        }
+
+                        function inject(injectionKey: string) {
+                            return function applyInjection(v: undefined, context: ClassFieldDecoratorContext<any, any>) {
+                                injections.push({ injectionKey, set: context.access.set });
+                            };
+                        }
+
+                        return { injectable, inject };
+                    }
+
+                    class Container {
+                        registry = new Map();
+
+                        register(injectionKey: string, value: any) {
+                            this.registry.set(injectionKey, value);
+                        }
+
+                        lookup(injectionKey: string) {
+                            return this.registry.get(injectionKey);
+                        }
+
+                        create<T extends new (...args: any) => any>(Class: T) {
+                            let instance = new Class();
+
+                            for (const { injectionKey, set } of INJECTIONS.get(Class) || []) {
+                                set.call(instance, this.lookup(injectionKey));
+                            }
+
+                            return instance;
+                        }
+                    }
+
+                    class Store {}
+
+                    const { injectable, inject } = createInjections();
+
+                    @injectable
+                    class C {
+                        @inject('store') store!: Store;
+                    }
+
+                    let container = new Container();
+                    let store = new Store();
+
+                    container.register('store', store);
+
+                    let c = container.create(C);
+
+                    export const result = c.store === store;
+                `;
+                assert.isTrue(result);
+            });
+        });
+    }
+});
\ No newline at end of file
diff --git a/src/testRunner/unittests/factory.ts b/src/testRunner/unittests/factory.ts
index 4961f47ba0bdb..ba452391c80c1 100644
--- a/src/testRunner/unittests/factory.ts
+++ b/src/testRunner/unittests/factory.ts
@@ -1,5 +1,6 @@
 import * as ts from "../_namespaces/ts";
 import { setEnableDeprecationWarnings } from "../../deprecatedCompat/deprecate";
+import { Modifier } from "../_namespaces/ts";
 
 describe("unittests:: FactoryAPI", () => {
     function assertSyntaxKind(node: ts.Node, expected: ts.SyntaxKind) {
@@ -111,7 +112,7 @@ describe("unittests:: FactoryAPI", () => {
             assert.doesNotThrow(() => ts.factory.updateConstructorDeclaration(
                 ctor,
                 ctor.decorators,
-                ctor.modifiers,
+                ctor.modifiers as readonly Modifier[] | undefined,
                 ctor.parameters,
                 ctor.body,
             ));
diff --git a/src/testRunner/unittests/transform.ts b/src/testRunner/unittests/transform.ts
index 4087553e46900..89331f93c4242 100644
--- a/src/testRunner/unittests/transform.ts
+++ b/src/testRunner/unittests/transform.ts
@@ -4,6 +4,7 @@ import * as evaluator from "../_namespaces/evaluator";
 import * as vfs from "../_namespaces/vfs";
 import * as documents from "../_namespaces/documents";
 import * as fakes from "../_namespaces/fakes";
+import { NewLineKind, ScriptTarget, transpileModule } from "../_namespaces/ts";
 
 describe("unittests:: TransformAPI", () => {
     function replaceUndefinedWithVoid0(context: ts.TransformationContext) {
@@ -328,13 +329,14 @@ describe("unittests:: TransformAPI", () => {
 
     // https://github.com/Microsoft/TypeScript/issues/17384
     testBaseline("transformAddDecoratedNode", () => {
-        return ts.transpileModule("", {
+        return transpileModule("", {
             transformers: {
                 before: [transformAddDecoratedNode],
             },
             compilerOptions: {
-                target: ts.ScriptTarget.ES5,
-                newLine: ts.NewLineKind.CarriageReturnLineFeed,
+                target: ScriptTarget.ES5,
+                experimentalDecorators: true,
+                newLine: NewLineKind.CarriageReturnLineFeed,
             }
         }).outputText;
 
@@ -366,13 +368,14 @@ describe("unittests:: TransformAPI", () => {
 
     // https://github.com/microsoft/TypeScript/issues/33295
     testBaseline("transformParameterProperty", () => {
-        return ts.transpileModule("", {
+        return transpileModule("", {
             transformers: {
                 before: [transformAddParameterProperty],
             },
             compilerOptions: {
-                target: ts.ScriptTarget.ES5,
-                newLine: ts.NewLineKind.CarriageReturnLineFeed,
+                target: ScriptTarget.ES5,
+                newLine: NewLineKind.CarriageReturnLineFeed,
+                experimentalDecorators: true,
             }
         }).outputText;
 
@@ -643,8 +646,9 @@ class MyClass {
                 before: [addStaticFieldWithComment],
             },
             compilerOptions: {
-                target: ts.ScriptTarget.ES2015,
-                newLine: ts.NewLineKind.CarriageReturnLineFeed,
+                target: ScriptTarget.ES2015,
+                experimentalDecorators: true,
+                newLine: NewLineKind.CarriageReturnLineFeed,
             }
         }).outputText;
     });
@@ -658,8 +662,9 @@ const MyClass = class {
                 before: [addStaticFieldWithComment],
             },
             compilerOptions: {
-                target: ts.ScriptTarget.ES2015,
-                newLine: ts.NewLineKind.CarriageReturnLineFeed,
+                target: ScriptTarget.ES2015,
+                experimentalDecorators: true,
+                newLine: NewLineKind.CarriageReturnLineFeed,
             }
         }).outputText;
     });
diff --git a/tests/baselines/reference/amdImportNotAsPrimaryExpression.js b/tests/baselines/reference/amdImportNotAsPrimaryExpression.js
index 43c36d331d292..a559a89d7da73 100644
--- a/tests/baselines/reference/amdImportNotAsPrimaryExpression.js
+++ b/tests/baselines/reference/amdImportNotAsPrimaryExpression.js
@@ -36,14 +36,13 @@ define(["require", "exports"], function (require, exports) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.E1 = exports.C1 = void 0;
-    var C1 = /** @class */ (function () {
+    var C1 = exports.C1 = /** @class */ (function () {
         function C1() {
             this.m1 = 42;
         }
         C1.s1 = true;
         return C1;
     }());
-    exports.C1 = C1;
     var E1;
     (function (E1) {
         E1[E1["A"] = 0] = "A";
diff --git a/tests/baselines/reference/api/tsserverlibrary.d.ts b/tests/baselines/reference/api/tsserverlibrary.d.ts
index 35d7f3eab8a10..ca7b3306f5f44 100644
--- a/tests/baselines/reference/api/tsserverlibrary.d.ts
+++ b/tests/baselines/reference/api/tsserverlibrary.d.ts
@@ -4385,7 +4385,7 @@ declare namespace ts {
     type TriviaSyntaxKind = SyntaxKind.SingleLineCommentTrivia | SyntaxKind.MultiLineCommentTrivia | SyntaxKind.NewLineTrivia | SyntaxKind.WhitespaceTrivia | SyntaxKind.ShebangTrivia | SyntaxKind.ConflictMarkerTrivia;
     type LiteralSyntaxKind = SyntaxKind.NumericLiteral | SyntaxKind.BigIntLiteral | SyntaxKind.StringLiteral | SyntaxKind.JsxText | SyntaxKind.JsxTextAllWhiteSpaces | SyntaxKind.RegularExpressionLiteral | SyntaxKind.NoSubstitutionTemplateLiteral;
     type PseudoLiteralSyntaxKind = SyntaxKind.TemplateHead | SyntaxKind.TemplateMiddle | SyntaxKind.TemplateTail;
-    type PunctuationSyntaxKind = SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.OpenParenToken | SyntaxKind.CloseParenToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.DotToken | SyntaxKind.DotDotDotToken | SyntaxKind.SemicolonToken | SyntaxKind.CommaToken | SyntaxKind.QuestionDotToken | SyntaxKind.LessThanToken | SyntaxKind.LessThanSlashToken | SyntaxKind.GreaterThanToken | SyntaxKind.LessThanEqualsToken | SyntaxKind.GreaterThanEqualsToken | SyntaxKind.EqualsEqualsToken | SyntaxKind.ExclamationEqualsToken | SyntaxKind.EqualsEqualsEqualsToken | SyntaxKind.ExclamationEqualsEqualsToken | SyntaxKind.EqualsGreaterThanToken | SyntaxKind.PlusToken | SyntaxKind.MinusToken | SyntaxKind.AsteriskToken | SyntaxKind.AsteriskAsteriskToken | SyntaxKind.SlashToken | SyntaxKind.PercentToken | SyntaxKind.PlusPlusToken | SyntaxKind.MinusMinusToken | SyntaxKind.LessThanLessThanToken | SyntaxKind.GreaterThanGreaterThanToken | SyntaxKind.GreaterThanGreaterThanGreaterThanToken | SyntaxKind.AmpersandToken | SyntaxKind.BarToken | SyntaxKind.CaretToken | SyntaxKind.ExclamationToken | SyntaxKind.TildeToken | SyntaxKind.AmpersandAmpersandToken | SyntaxKind.BarBarToken | SyntaxKind.QuestionQuestionToken | SyntaxKind.QuestionToken | SyntaxKind.ColonToken | SyntaxKind.AtToken | SyntaxKind.BacktickToken | SyntaxKind.HashToken | SyntaxKind.EqualsToken | SyntaxKind.PlusEqualsToken | SyntaxKind.MinusEqualsToken | SyntaxKind.AsteriskEqualsToken | SyntaxKind.AsteriskAsteriskEqualsToken | SyntaxKind.SlashEqualsToken | SyntaxKind.PercentEqualsToken | SyntaxKind.LessThanLessThanEqualsToken | SyntaxKind.GreaterThanGreaterThanEqualsToken | SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken | SyntaxKind.AmpersandEqualsToken | SyntaxKind.BarEqualsToken | SyntaxKind.CaretEqualsToken;
+    type PunctuationSyntaxKind = SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.OpenParenToken | SyntaxKind.CloseParenToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.DotToken | SyntaxKind.DotDotDotToken | SyntaxKind.SemicolonToken | SyntaxKind.CommaToken | SyntaxKind.QuestionDotToken | SyntaxKind.LessThanToken | SyntaxKind.LessThanSlashToken | SyntaxKind.GreaterThanToken | SyntaxKind.LessThanEqualsToken | SyntaxKind.GreaterThanEqualsToken | SyntaxKind.EqualsEqualsToken | SyntaxKind.ExclamationEqualsToken | SyntaxKind.EqualsEqualsEqualsToken | SyntaxKind.ExclamationEqualsEqualsToken | SyntaxKind.EqualsGreaterThanToken | SyntaxKind.PlusToken | SyntaxKind.MinusToken | SyntaxKind.AsteriskToken | SyntaxKind.AsteriskAsteriskToken | SyntaxKind.SlashToken | SyntaxKind.PercentToken | SyntaxKind.PlusPlusToken | SyntaxKind.MinusMinusToken | SyntaxKind.LessThanLessThanToken | SyntaxKind.GreaterThanGreaterThanToken | SyntaxKind.GreaterThanGreaterThanGreaterThanToken | SyntaxKind.AmpersandToken | SyntaxKind.BarToken | SyntaxKind.CaretToken | SyntaxKind.ExclamationToken | SyntaxKind.TildeToken | SyntaxKind.AmpersandAmpersandToken | SyntaxKind.AmpersandAmpersandEqualsToken | SyntaxKind.BarBarToken | SyntaxKind.BarBarEqualsToken | SyntaxKind.QuestionQuestionToken | SyntaxKind.QuestionQuestionEqualsToken | SyntaxKind.QuestionToken | SyntaxKind.ColonToken | SyntaxKind.AtToken | SyntaxKind.BacktickToken | SyntaxKind.HashToken | SyntaxKind.EqualsToken | SyntaxKind.PlusEqualsToken | SyntaxKind.MinusEqualsToken | SyntaxKind.AsteriskEqualsToken | SyntaxKind.AsteriskAsteriskEqualsToken | SyntaxKind.SlashEqualsToken | SyntaxKind.PercentEqualsToken | SyntaxKind.LessThanLessThanEqualsToken | SyntaxKind.GreaterThanGreaterThanEqualsToken | SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken | SyntaxKind.AmpersandEqualsToken | SyntaxKind.BarEqualsToken | SyntaxKind.CaretEqualsToken;
     type KeywordSyntaxKind = SyntaxKind.AbstractKeyword | SyntaxKind.AccessorKeyword | SyntaxKind.AnyKeyword | SyntaxKind.AsKeyword | SyntaxKind.AssertsKeyword | SyntaxKind.AssertKeyword | SyntaxKind.AsyncKeyword | SyntaxKind.AwaitKeyword | SyntaxKind.BigIntKeyword | SyntaxKind.BooleanKeyword | SyntaxKind.BreakKeyword | SyntaxKind.CaseKeyword | SyntaxKind.CatchKeyword | SyntaxKind.ClassKeyword | SyntaxKind.ConstKeyword | SyntaxKind.ConstructorKeyword | SyntaxKind.ContinueKeyword | SyntaxKind.DebuggerKeyword | SyntaxKind.DeclareKeyword | SyntaxKind.DefaultKeyword | SyntaxKind.DeleteKeyword | SyntaxKind.DoKeyword | SyntaxKind.ElseKeyword | SyntaxKind.EnumKeyword | SyntaxKind.ExportKeyword | SyntaxKind.ExtendsKeyword | SyntaxKind.FalseKeyword | SyntaxKind.FinallyKeyword | SyntaxKind.ForKeyword | SyntaxKind.FromKeyword | SyntaxKind.FunctionKeyword | SyntaxKind.GetKeyword | SyntaxKind.GlobalKeyword | SyntaxKind.IfKeyword | SyntaxKind.ImplementsKeyword | SyntaxKind.ImportKeyword | SyntaxKind.InferKeyword | SyntaxKind.InKeyword | SyntaxKind.InstanceOfKeyword | SyntaxKind.InterfaceKeyword | SyntaxKind.IntrinsicKeyword | SyntaxKind.IsKeyword | SyntaxKind.KeyOfKeyword | SyntaxKind.LetKeyword | SyntaxKind.ModuleKeyword | SyntaxKind.NamespaceKeyword | SyntaxKind.NeverKeyword | SyntaxKind.NewKeyword | SyntaxKind.NullKeyword | SyntaxKind.NumberKeyword | SyntaxKind.ObjectKeyword | SyntaxKind.OfKeyword | SyntaxKind.PackageKeyword | SyntaxKind.PrivateKeyword | SyntaxKind.ProtectedKeyword | SyntaxKind.PublicKeyword | SyntaxKind.ReadonlyKeyword | SyntaxKind.OutKeyword | SyntaxKind.OverrideKeyword | SyntaxKind.RequireKeyword | SyntaxKind.ReturnKeyword | SyntaxKind.SatisfiesKeyword | SyntaxKind.SetKeyword | SyntaxKind.StaticKeyword | SyntaxKind.StringKeyword | SyntaxKind.SuperKeyword | SyntaxKind.SwitchKeyword | SyntaxKind.SymbolKeyword | SyntaxKind.ThisKeyword | SyntaxKind.ThrowKeyword | SyntaxKind.TrueKeyword | SyntaxKind.TryKeyword | SyntaxKind.TypeKeyword | SyntaxKind.TypeOfKeyword | SyntaxKind.UndefinedKeyword | SyntaxKind.UniqueKeyword | SyntaxKind.UnknownKeyword | SyntaxKind.VarKeyword | SyntaxKind.VoidKeyword | SyntaxKind.WhileKeyword | SyntaxKind.WithKeyword | SyntaxKind.YieldKeyword;
     type ModifierSyntaxKind = SyntaxKind.AbstractKeyword | SyntaxKind.AccessorKeyword | SyntaxKind.AsyncKeyword | SyntaxKind.ConstKeyword | SyntaxKind.DeclareKeyword | SyntaxKind.DefaultKeyword | SyntaxKind.ExportKeyword | SyntaxKind.InKeyword | SyntaxKind.PrivateKeyword | SyntaxKind.ProtectedKeyword | SyntaxKind.PublicKeyword | SyntaxKind.ReadonlyKeyword | SyntaxKind.OutKeyword | SyntaxKind.OverrideKeyword | SyntaxKind.StaticKeyword;
     type KeywordTypeSyntaxKind = SyntaxKind.AnyKeyword | SyntaxKind.BigIntKeyword | SyntaxKind.BooleanKeyword | SyntaxKind.IntrinsicKeyword | SyntaxKind.NeverKeyword | SyntaxKind.NumberKeyword | SyntaxKind.ObjectKeyword | SyntaxKind.StringKeyword | SyntaxKind.SymbolKeyword | SyntaxKind.UndefinedKeyword | SyntaxKind.UnknownKeyword | SyntaxKind.VoidKeyword;
@@ -4537,6 +4537,9 @@ declare namespace ts {
     type ExclamationToken = PunctuationToken<SyntaxKind.ExclamationToken>;
     type ColonToken = PunctuationToken<SyntaxKind.ColonToken>;
     type EqualsToken = PunctuationToken<SyntaxKind.EqualsToken>;
+    type AmpersandAmpersandEqualsToken = PunctuationToken<SyntaxKind.AmpersandAmpersandEqualsToken>;
+    type BarBarEqualsToken = PunctuationToken<SyntaxKind.BarBarEqualsToken>;
+    type QuestionQuestionEqualsToken = PunctuationToken<SyntaxKind.QuestionQuestionEqualsToken>;
     type AsteriskToken = PunctuationToken<SyntaxKind.AsteriskToken>;
     type EqualsGreaterThanToken = PunctuationToken<SyntaxKind.EqualsGreaterThanToken>;
     type PlusToken = PunctuationToken<SyntaxKind.PlusToken>;
@@ -4747,7 +4750,7 @@ declare namespace ts {
     }
     interface ShorthandPropertyAssignment {
         /** @deprecated A shorthand property assignment cannot have modifiers */
-        readonly modifiers?: NodeArray<Modifier> | undefined;
+        readonly modifiers?: NodeArray<ModifierLike> | undefined;
         /** @deprecated A shorthand property assignment cannot have a question token */
         readonly questionToken?: QuestionToken | undefined;
         /** @deprecated A shorthand property assignment cannot have an exclamation token */
@@ -4791,7 +4794,7 @@ declare namespace ts {
     type FunctionLike = SignatureDeclaration;
     interface FunctionDeclaration extends FunctionLikeDeclarationBase, DeclarationStatement, LocalsContainer {
         readonly kind: SyntaxKind.FunctionDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name?: Identifier;
         readonly body?: FunctionBody;
     }
@@ -4811,7 +4814,7 @@ declare namespace ts {
     interface ConstructorDeclaration extends FunctionLikeDeclarationBase, ClassElement, JSDocContainer, LocalsContainer {
         readonly kind: SyntaxKind.Constructor;
         readonly parent: ClassLikeDeclaration;
-        readonly modifiers?: NodeArray<Modifier> | undefined;
+        readonly modifiers?: NodeArray<ModifierLike> | undefined;
         readonly body?: FunctionBody | undefined;
     }
     /** For when we encounter a semicolon in a class declaration. ES6 allows these as class elements. */
@@ -4837,7 +4840,7 @@ declare namespace ts {
     interface IndexSignatureDeclaration extends SignatureDeclarationBase, ClassElement, TypeElement, LocalsContainer {
         readonly kind: SyntaxKind.IndexSignature;
         readonly parent: ObjectTypeDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly type: TypeNode;
     }
     interface ClassStaticBlockDeclaration extends ClassElement, JSDocContainer, LocalsContainer {
@@ -5420,7 +5423,7 @@ declare namespace ts {
     interface DebuggerStatement extends Statement, FlowContainer {
         readonly kind: SyntaxKind.DebuggerStatement;
     }
-    interface MissingDeclaration extends DeclarationStatement {
+    interface MissingDeclaration extends DeclarationStatement, PrimaryExpression {
         readonly kind: SyntaxKind.MissingDeclaration;
         readonly name?: Identifier;
     }
@@ -5431,7 +5434,7 @@ declare namespace ts {
     }
     interface VariableStatement extends Statement, FlowContainer {
         readonly kind: SyntaxKind.VariableStatement;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly declarationList: VariableDeclarationList;
     }
     interface ExpressionStatement extends Statement, FlowContainer {
@@ -5568,7 +5571,7 @@ declare namespace ts {
     }
     interface InterfaceDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.InterfaceDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly typeParameters?: NodeArray<TypeParameterDeclaration>;
         readonly heritageClauses?: NodeArray<HeritageClause>;
@@ -5582,7 +5585,7 @@ declare namespace ts {
     }
     interface TypeAliasDeclaration extends DeclarationStatement, JSDocContainer, LocalsContainer {
         readonly kind: SyntaxKind.TypeAliasDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly typeParameters?: NodeArray<TypeParameterDeclaration>;
         readonly type: TypeNode;
@@ -5595,7 +5598,7 @@ declare namespace ts {
     }
     interface EnumDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.EnumDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly members: NodeArray<EnumMember>;
     }
@@ -5604,7 +5607,7 @@ declare namespace ts {
     interface ModuleDeclaration extends DeclarationStatement, JSDocContainer, LocalsContainer {
         readonly kind: SyntaxKind.ModuleDeclaration;
         readonly parent: ModuleBody | SourceFile;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: ModuleName;
         readonly body?: ModuleBody | JSDocNamespaceDeclaration;
     }
@@ -5632,7 +5635,7 @@ declare namespace ts {
     interface ImportEqualsDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.ImportEqualsDeclaration;
         readonly parent: SourceFile | ModuleBlock;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly isTypeOnly: boolean;
         readonly moduleReference: ModuleReference;
@@ -5645,7 +5648,7 @@ declare namespace ts {
     interface ImportDeclaration extends Statement {
         readonly kind: SyntaxKind.ImportDeclaration;
         readonly parent: SourceFile | ModuleBlock;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly importClause?: ImportClause;
         /** If this is not a StringLiteral it will be a grammar error. */
         readonly moduleSpecifier: Expression;
@@ -5690,7 +5693,7 @@ declare namespace ts {
     interface ExportDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.ExportDeclaration;
         readonly parent: SourceFile | ModuleBlock;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly isTypeOnly: boolean;
         /** Will not be assigned in the case of `export * from "foo";` */
         readonly exportClause?: NamedExportBindings;
@@ -5758,7 +5761,7 @@ declare namespace ts {
     interface ExportAssignment extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.ExportAssignment;
         readonly parent: SourceFile;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly isExportEquals?: boolean;
         readonly expression: Expression;
     }
@@ -7525,8 +7528,8 @@ declare namespace ts {
         updateMethodSignature(node: MethodSignature, modifiers: readonly Modifier[] | undefined, name: PropertyName, questionToken: QuestionToken | undefined, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): MethodSignature;
         createMethodDeclaration(modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: string | PropertyName, questionToken: QuestionToken | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): MethodDeclaration;
         updateMethodDeclaration(node: MethodDeclaration, modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: PropertyName, questionToken: QuestionToken | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): MethodDeclaration;
-        createConstructorDeclaration(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
-        updateConstructorDeclaration(node: ConstructorDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
+        createConstructorDeclaration(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
+        updateConstructorDeclaration(node: ConstructorDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
         createGetAccessorDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | PropertyName, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): GetAccessorDeclaration;
         updateGetAccessorDeclaration(node: GetAccessorDeclaration, modifiers: readonly ModifierLike[] | undefined, name: PropertyName, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): GetAccessorDeclaration;
         createSetAccessorDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | PropertyName, parameters: readonly ParameterDeclaration[], body: Block | undefined): SetAccessorDeclaration;
@@ -7535,8 +7538,8 @@ declare namespace ts {
         updateCallSignature(node: CallSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): CallSignatureDeclaration;
         createConstructSignature(typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined): ConstructSignatureDeclaration;
         updateConstructSignature(node: ConstructSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): ConstructSignatureDeclaration;
-        createIndexSignature(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
-        updateIndexSignature(node: IndexSignatureDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
+        createIndexSignature(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
+        updateIndexSignature(node: IndexSignatureDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
         createTemplateLiteralTypeSpan(type: TypeNode, literal: TemplateMiddle | TemplateTail): TemplateLiteralTypeSpan;
         updateTemplateLiteralTypeSpan(node: TemplateLiteralTypeSpan, type: TypeNode, literal: TemplateMiddle | TemplateTail): TemplateLiteralTypeSpan;
         createClassStaticBlockDeclaration(body: Block): ClassStaticBlockDeclaration;
@@ -7672,8 +7675,8 @@ declare namespace ts {
         createSemicolonClassElement(): SemicolonClassElement;
         createBlock(statements: readonly Statement[], multiLine?: boolean): Block;
         updateBlock(node: Block, statements: readonly Statement[]): Block;
-        createVariableStatement(modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]): VariableStatement;
-        updateVariableStatement(node: VariableStatement, modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList): VariableStatement;
+        createVariableStatement(modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]): VariableStatement;
+        updateVariableStatement(node: VariableStatement, modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList): VariableStatement;
         createEmptyStatement(): EmptyStatement;
         createExpressionStatement(expression: Expression): ExpressionStatement;
         updateExpressionStatement(node: ExpressionStatement, expression: Expression): ExpressionStatement;
@@ -7714,24 +7717,24 @@ declare namespace ts {
         updateFunctionDeclaration(node: FunctionDeclaration, modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): FunctionDeclaration;
         createClassDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly ClassElement[]): ClassDeclaration;
         updateClassDeclaration(node: ClassDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly ClassElement[]): ClassDeclaration;
-        createInterfaceDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
-        updateInterfaceDeclaration(node: InterfaceDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
-        createTypeAliasDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
-        updateTypeAliasDeclaration(node: TypeAliasDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
-        createEnumDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration;
-        updateEnumDeclaration(node: EnumDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration;
-        createModuleDeclaration(modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration;
-        updateModuleDeclaration(node: ModuleDeclaration, modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration;
+        createInterfaceDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
+        updateInterfaceDeclaration(node: InterfaceDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
+        createTypeAliasDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
+        updateTypeAliasDeclaration(node: TypeAliasDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
+        createEnumDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration;
+        updateEnumDeclaration(node: EnumDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration;
+        createModuleDeclaration(modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration;
+        updateModuleDeclaration(node: ModuleDeclaration, modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration;
         createModuleBlock(statements: readonly Statement[]): ModuleBlock;
         updateModuleBlock(node: ModuleBlock, statements: readonly Statement[]): ModuleBlock;
         createCaseBlock(clauses: readonly CaseOrDefaultClause[]): CaseBlock;
         updateCaseBlock(node: CaseBlock, clauses: readonly CaseOrDefaultClause[]): CaseBlock;
         createNamespaceExportDeclaration(name: string | Identifier): NamespaceExportDeclaration;
         updateNamespaceExportDeclaration(node: NamespaceExportDeclaration, name: Identifier): NamespaceExportDeclaration;
-        createImportEqualsDeclaration(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-        updateImportEqualsDeclaration(node: ImportEqualsDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-        createImportDeclaration(modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration;
-        updateImportDeclaration(node: ImportDeclaration, modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration;
+        createImportEqualsDeclaration(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
+        updateImportEqualsDeclaration(node: ImportEqualsDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
+        createImportDeclaration(modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration;
+        updateImportDeclaration(node: ImportDeclaration, modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration;
         createImportClause(isTypeOnly: boolean, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
         updateImportClause(node: ImportClause, isTypeOnly: boolean, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
         createAssertClause(elements: NodeArray<AssertEntry>, multiLine?: boolean): AssertClause;
@@ -7748,10 +7751,10 @@ declare namespace ts {
         updateNamedImports(node: NamedImports, elements: readonly ImportSpecifier[]): NamedImports;
         createImportSpecifier(isTypeOnly: boolean, propertyName: Identifier | undefined, name: Identifier): ImportSpecifier;
         updateImportSpecifier(node: ImportSpecifier, isTypeOnly: boolean, propertyName: Identifier | undefined, name: Identifier): ImportSpecifier;
-        createExportAssignment(modifiers: readonly Modifier[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment;
-        updateExportAssignment(node: ExportAssignment, modifiers: readonly Modifier[] | undefined, expression: Expression): ExportAssignment;
-        createExportDeclaration(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration;
-        updateExportDeclaration(node: ExportDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration;
+        createExportAssignment(modifiers: readonly ModifierLike[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment;
+        updateExportAssignment(node: ExportAssignment, modifiers: readonly ModifierLike[] | undefined, expression: Expression): ExportAssignment;
+        createExportDeclaration(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration;
+        updateExportDeclaration(node: ExportDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration;
         createNamedExports(elements: readonly ExportSpecifier[]): NamedExports;
         updateNamedExports(node: NamedExports, elements: readonly ExportSpecifier[]): NamedExports;
         createExportSpecifier(isTypeOnly: boolean, propertyName: string | Identifier | undefined, name: string | Identifier): ExportSpecifier;
@@ -9407,6 +9410,12 @@ declare namespace ts {
      * Visits an iteration body, adding any block-scoped variables required by the transformation.
      */
     function visitIterationBody(body: Statement, visitor: Visitor, context: TransformationContext): Statement;
+    /**
+     * Visits the elements of a {@link CommaListExpression}.
+     * @param visitor The visitor to use when visiting expressions whose result will not be discarded at runtime.
+     * @param discardVisitor The visitor to use when visiting expressions whose result will be discarded at runtime. Defaults to {@link visitor}.
+     */
+    function visitCommaListElements(elements: NodeArray<Expression>, visitor: Visitor, discardVisitor?: Visitor): NodeArray<Expression>;
     /**
      * Visits each child of a Node using the supplied visitor, possibly returning a new Node of the same kind in its place.
      *
diff --git a/tests/baselines/reference/api/typescript.d.ts b/tests/baselines/reference/api/typescript.d.ts
index 6c4dd8cf96b43..d7f5fac47b782 100644
--- a/tests/baselines/reference/api/typescript.d.ts
+++ b/tests/baselines/reference/api/typescript.d.ts
@@ -444,7 +444,7 @@ declare namespace ts {
     type TriviaSyntaxKind = SyntaxKind.SingleLineCommentTrivia | SyntaxKind.MultiLineCommentTrivia | SyntaxKind.NewLineTrivia | SyntaxKind.WhitespaceTrivia | SyntaxKind.ShebangTrivia | SyntaxKind.ConflictMarkerTrivia;
     type LiteralSyntaxKind = SyntaxKind.NumericLiteral | SyntaxKind.BigIntLiteral | SyntaxKind.StringLiteral | SyntaxKind.JsxText | SyntaxKind.JsxTextAllWhiteSpaces | SyntaxKind.RegularExpressionLiteral | SyntaxKind.NoSubstitutionTemplateLiteral;
     type PseudoLiteralSyntaxKind = SyntaxKind.TemplateHead | SyntaxKind.TemplateMiddle | SyntaxKind.TemplateTail;
-    type PunctuationSyntaxKind = SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.OpenParenToken | SyntaxKind.CloseParenToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.DotToken | SyntaxKind.DotDotDotToken | SyntaxKind.SemicolonToken | SyntaxKind.CommaToken | SyntaxKind.QuestionDotToken | SyntaxKind.LessThanToken | SyntaxKind.LessThanSlashToken | SyntaxKind.GreaterThanToken | SyntaxKind.LessThanEqualsToken | SyntaxKind.GreaterThanEqualsToken | SyntaxKind.EqualsEqualsToken | SyntaxKind.ExclamationEqualsToken | SyntaxKind.EqualsEqualsEqualsToken | SyntaxKind.ExclamationEqualsEqualsToken | SyntaxKind.EqualsGreaterThanToken | SyntaxKind.PlusToken | SyntaxKind.MinusToken | SyntaxKind.AsteriskToken | SyntaxKind.AsteriskAsteriskToken | SyntaxKind.SlashToken | SyntaxKind.PercentToken | SyntaxKind.PlusPlusToken | SyntaxKind.MinusMinusToken | SyntaxKind.LessThanLessThanToken | SyntaxKind.GreaterThanGreaterThanToken | SyntaxKind.GreaterThanGreaterThanGreaterThanToken | SyntaxKind.AmpersandToken | SyntaxKind.BarToken | SyntaxKind.CaretToken | SyntaxKind.ExclamationToken | SyntaxKind.TildeToken | SyntaxKind.AmpersandAmpersandToken | SyntaxKind.BarBarToken | SyntaxKind.QuestionQuestionToken | SyntaxKind.QuestionToken | SyntaxKind.ColonToken | SyntaxKind.AtToken | SyntaxKind.BacktickToken | SyntaxKind.HashToken | SyntaxKind.EqualsToken | SyntaxKind.PlusEqualsToken | SyntaxKind.MinusEqualsToken | SyntaxKind.AsteriskEqualsToken | SyntaxKind.AsteriskAsteriskEqualsToken | SyntaxKind.SlashEqualsToken | SyntaxKind.PercentEqualsToken | SyntaxKind.LessThanLessThanEqualsToken | SyntaxKind.GreaterThanGreaterThanEqualsToken | SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken | SyntaxKind.AmpersandEqualsToken | SyntaxKind.BarEqualsToken | SyntaxKind.CaretEqualsToken;
+    type PunctuationSyntaxKind = SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.OpenParenToken | SyntaxKind.CloseParenToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.DotToken | SyntaxKind.DotDotDotToken | SyntaxKind.SemicolonToken | SyntaxKind.CommaToken | SyntaxKind.QuestionDotToken | SyntaxKind.LessThanToken | SyntaxKind.LessThanSlashToken | SyntaxKind.GreaterThanToken | SyntaxKind.LessThanEqualsToken | SyntaxKind.GreaterThanEqualsToken | SyntaxKind.EqualsEqualsToken | SyntaxKind.ExclamationEqualsToken | SyntaxKind.EqualsEqualsEqualsToken | SyntaxKind.ExclamationEqualsEqualsToken | SyntaxKind.EqualsGreaterThanToken | SyntaxKind.PlusToken | SyntaxKind.MinusToken | SyntaxKind.AsteriskToken | SyntaxKind.AsteriskAsteriskToken | SyntaxKind.SlashToken | SyntaxKind.PercentToken | SyntaxKind.PlusPlusToken | SyntaxKind.MinusMinusToken | SyntaxKind.LessThanLessThanToken | SyntaxKind.GreaterThanGreaterThanToken | SyntaxKind.GreaterThanGreaterThanGreaterThanToken | SyntaxKind.AmpersandToken | SyntaxKind.BarToken | SyntaxKind.CaretToken | SyntaxKind.ExclamationToken | SyntaxKind.TildeToken | SyntaxKind.AmpersandAmpersandToken | SyntaxKind.AmpersandAmpersandEqualsToken | SyntaxKind.BarBarToken | SyntaxKind.BarBarEqualsToken | SyntaxKind.QuestionQuestionToken | SyntaxKind.QuestionQuestionEqualsToken | SyntaxKind.QuestionToken | SyntaxKind.ColonToken | SyntaxKind.AtToken | SyntaxKind.BacktickToken | SyntaxKind.HashToken | SyntaxKind.EqualsToken | SyntaxKind.PlusEqualsToken | SyntaxKind.MinusEqualsToken | SyntaxKind.AsteriskEqualsToken | SyntaxKind.AsteriskAsteriskEqualsToken | SyntaxKind.SlashEqualsToken | SyntaxKind.PercentEqualsToken | SyntaxKind.LessThanLessThanEqualsToken | SyntaxKind.GreaterThanGreaterThanEqualsToken | SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken | SyntaxKind.AmpersandEqualsToken | SyntaxKind.BarEqualsToken | SyntaxKind.CaretEqualsToken;
     type KeywordSyntaxKind = SyntaxKind.AbstractKeyword | SyntaxKind.AccessorKeyword | SyntaxKind.AnyKeyword | SyntaxKind.AsKeyword | SyntaxKind.AssertsKeyword | SyntaxKind.AssertKeyword | SyntaxKind.AsyncKeyword | SyntaxKind.AwaitKeyword | SyntaxKind.BigIntKeyword | SyntaxKind.BooleanKeyword | SyntaxKind.BreakKeyword | SyntaxKind.CaseKeyword | SyntaxKind.CatchKeyword | SyntaxKind.ClassKeyword | SyntaxKind.ConstKeyword | SyntaxKind.ConstructorKeyword | SyntaxKind.ContinueKeyword | SyntaxKind.DebuggerKeyword | SyntaxKind.DeclareKeyword | SyntaxKind.DefaultKeyword | SyntaxKind.DeleteKeyword | SyntaxKind.DoKeyword | SyntaxKind.ElseKeyword | SyntaxKind.EnumKeyword | SyntaxKind.ExportKeyword | SyntaxKind.ExtendsKeyword | SyntaxKind.FalseKeyword | SyntaxKind.FinallyKeyword | SyntaxKind.ForKeyword | SyntaxKind.FromKeyword | SyntaxKind.FunctionKeyword | SyntaxKind.GetKeyword | SyntaxKind.GlobalKeyword | SyntaxKind.IfKeyword | SyntaxKind.ImplementsKeyword | SyntaxKind.ImportKeyword | SyntaxKind.InferKeyword | SyntaxKind.InKeyword | SyntaxKind.InstanceOfKeyword | SyntaxKind.InterfaceKeyword | SyntaxKind.IntrinsicKeyword | SyntaxKind.IsKeyword | SyntaxKind.KeyOfKeyword | SyntaxKind.LetKeyword | SyntaxKind.ModuleKeyword | SyntaxKind.NamespaceKeyword | SyntaxKind.NeverKeyword | SyntaxKind.NewKeyword | SyntaxKind.NullKeyword | SyntaxKind.NumberKeyword | SyntaxKind.ObjectKeyword | SyntaxKind.OfKeyword | SyntaxKind.PackageKeyword | SyntaxKind.PrivateKeyword | SyntaxKind.ProtectedKeyword | SyntaxKind.PublicKeyword | SyntaxKind.ReadonlyKeyword | SyntaxKind.OutKeyword | SyntaxKind.OverrideKeyword | SyntaxKind.RequireKeyword | SyntaxKind.ReturnKeyword | SyntaxKind.SatisfiesKeyword | SyntaxKind.SetKeyword | SyntaxKind.StaticKeyword | SyntaxKind.StringKeyword | SyntaxKind.SuperKeyword | SyntaxKind.SwitchKeyword | SyntaxKind.SymbolKeyword | SyntaxKind.ThisKeyword | SyntaxKind.ThrowKeyword | SyntaxKind.TrueKeyword | SyntaxKind.TryKeyword | SyntaxKind.TypeKeyword | SyntaxKind.TypeOfKeyword | SyntaxKind.UndefinedKeyword | SyntaxKind.UniqueKeyword | SyntaxKind.UnknownKeyword | SyntaxKind.VarKeyword | SyntaxKind.VoidKeyword | SyntaxKind.WhileKeyword | SyntaxKind.WithKeyword | SyntaxKind.YieldKeyword;
     type ModifierSyntaxKind = SyntaxKind.AbstractKeyword | SyntaxKind.AccessorKeyword | SyntaxKind.AsyncKeyword | SyntaxKind.ConstKeyword | SyntaxKind.DeclareKeyword | SyntaxKind.DefaultKeyword | SyntaxKind.ExportKeyword | SyntaxKind.InKeyword | SyntaxKind.PrivateKeyword | SyntaxKind.ProtectedKeyword | SyntaxKind.PublicKeyword | SyntaxKind.ReadonlyKeyword | SyntaxKind.OutKeyword | SyntaxKind.OverrideKeyword | SyntaxKind.StaticKeyword;
     type KeywordTypeSyntaxKind = SyntaxKind.AnyKeyword | SyntaxKind.BigIntKeyword | SyntaxKind.BooleanKeyword | SyntaxKind.IntrinsicKeyword | SyntaxKind.NeverKeyword | SyntaxKind.NumberKeyword | SyntaxKind.ObjectKeyword | SyntaxKind.StringKeyword | SyntaxKind.SymbolKeyword | SyntaxKind.UndefinedKeyword | SyntaxKind.UnknownKeyword | SyntaxKind.VoidKeyword;
@@ -596,6 +596,9 @@ declare namespace ts {
     type ExclamationToken = PunctuationToken<SyntaxKind.ExclamationToken>;
     type ColonToken = PunctuationToken<SyntaxKind.ColonToken>;
     type EqualsToken = PunctuationToken<SyntaxKind.EqualsToken>;
+    type AmpersandAmpersandEqualsToken = PunctuationToken<SyntaxKind.AmpersandAmpersandEqualsToken>;
+    type BarBarEqualsToken = PunctuationToken<SyntaxKind.BarBarEqualsToken>;
+    type QuestionQuestionEqualsToken = PunctuationToken<SyntaxKind.QuestionQuestionEqualsToken>;
     type AsteriskToken = PunctuationToken<SyntaxKind.AsteriskToken>;
     type EqualsGreaterThanToken = PunctuationToken<SyntaxKind.EqualsGreaterThanToken>;
     type PlusToken = PunctuationToken<SyntaxKind.PlusToken>;
@@ -806,7 +809,7 @@ declare namespace ts {
     }
     interface ShorthandPropertyAssignment {
         /** @deprecated A shorthand property assignment cannot have modifiers */
-        readonly modifiers?: NodeArray<Modifier> | undefined;
+        readonly modifiers?: NodeArray<ModifierLike> | undefined;
         /** @deprecated A shorthand property assignment cannot have a question token */
         readonly questionToken?: QuestionToken | undefined;
         /** @deprecated A shorthand property assignment cannot have an exclamation token */
@@ -850,7 +853,7 @@ declare namespace ts {
     type FunctionLike = SignatureDeclaration;
     interface FunctionDeclaration extends FunctionLikeDeclarationBase, DeclarationStatement, LocalsContainer {
         readonly kind: SyntaxKind.FunctionDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name?: Identifier;
         readonly body?: FunctionBody;
     }
@@ -870,7 +873,7 @@ declare namespace ts {
     interface ConstructorDeclaration extends FunctionLikeDeclarationBase, ClassElement, JSDocContainer, LocalsContainer {
         readonly kind: SyntaxKind.Constructor;
         readonly parent: ClassLikeDeclaration;
-        readonly modifiers?: NodeArray<Modifier> | undefined;
+        readonly modifiers?: NodeArray<ModifierLike> | undefined;
         readonly body?: FunctionBody | undefined;
     }
     /** For when we encounter a semicolon in a class declaration. ES6 allows these as class elements. */
@@ -896,7 +899,7 @@ declare namespace ts {
     interface IndexSignatureDeclaration extends SignatureDeclarationBase, ClassElement, TypeElement, LocalsContainer {
         readonly kind: SyntaxKind.IndexSignature;
         readonly parent: ObjectTypeDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly type: TypeNode;
     }
     interface ClassStaticBlockDeclaration extends ClassElement, JSDocContainer, LocalsContainer {
@@ -1479,7 +1482,7 @@ declare namespace ts {
     interface DebuggerStatement extends Statement, FlowContainer {
         readonly kind: SyntaxKind.DebuggerStatement;
     }
-    interface MissingDeclaration extends DeclarationStatement {
+    interface MissingDeclaration extends DeclarationStatement, PrimaryExpression {
         readonly kind: SyntaxKind.MissingDeclaration;
         readonly name?: Identifier;
     }
@@ -1490,7 +1493,7 @@ declare namespace ts {
     }
     interface VariableStatement extends Statement, FlowContainer {
         readonly kind: SyntaxKind.VariableStatement;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly declarationList: VariableDeclarationList;
     }
     interface ExpressionStatement extends Statement, FlowContainer {
@@ -1627,7 +1630,7 @@ declare namespace ts {
     }
     interface InterfaceDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.InterfaceDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly typeParameters?: NodeArray<TypeParameterDeclaration>;
         readonly heritageClauses?: NodeArray<HeritageClause>;
@@ -1641,7 +1644,7 @@ declare namespace ts {
     }
     interface TypeAliasDeclaration extends DeclarationStatement, JSDocContainer, LocalsContainer {
         readonly kind: SyntaxKind.TypeAliasDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly typeParameters?: NodeArray<TypeParameterDeclaration>;
         readonly type: TypeNode;
@@ -1654,7 +1657,7 @@ declare namespace ts {
     }
     interface EnumDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.EnumDeclaration;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly members: NodeArray<EnumMember>;
     }
@@ -1663,7 +1666,7 @@ declare namespace ts {
     interface ModuleDeclaration extends DeclarationStatement, JSDocContainer, LocalsContainer {
         readonly kind: SyntaxKind.ModuleDeclaration;
         readonly parent: ModuleBody | SourceFile;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: ModuleName;
         readonly body?: ModuleBody | JSDocNamespaceDeclaration;
     }
@@ -1691,7 +1694,7 @@ declare namespace ts {
     interface ImportEqualsDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.ImportEqualsDeclaration;
         readonly parent: SourceFile | ModuleBlock;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly name: Identifier;
         readonly isTypeOnly: boolean;
         readonly moduleReference: ModuleReference;
@@ -1704,7 +1707,7 @@ declare namespace ts {
     interface ImportDeclaration extends Statement {
         readonly kind: SyntaxKind.ImportDeclaration;
         readonly parent: SourceFile | ModuleBlock;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly importClause?: ImportClause;
         /** If this is not a StringLiteral it will be a grammar error. */
         readonly moduleSpecifier: Expression;
@@ -1749,7 +1752,7 @@ declare namespace ts {
     interface ExportDeclaration extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.ExportDeclaration;
         readonly parent: SourceFile | ModuleBlock;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly isTypeOnly: boolean;
         /** Will not be assigned in the case of `export * from "foo";` */
         readonly exportClause?: NamedExportBindings;
@@ -1817,7 +1820,7 @@ declare namespace ts {
     interface ExportAssignment extends DeclarationStatement, JSDocContainer {
         readonly kind: SyntaxKind.ExportAssignment;
         readonly parent: SourceFile;
-        readonly modifiers?: NodeArray<Modifier>;
+        readonly modifiers?: NodeArray<ModifierLike>;
         readonly isExportEquals?: boolean;
         readonly expression: Expression;
     }
@@ -3584,8 +3587,8 @@ declare namespace ts {
         updateMethodSignature(node: MethodSignature, modifiers: readonly Modifier[] | undefined, name: PropertyName, questionToken: QuestionToken | undefined, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): MethodSignature;
         createMethodDeclaration(modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: string | PropertyName, questionToken: QuestionToken | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): MethodDeclaration;
         updateMethodDeclaration(node: MethodDeclaration, modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: PropertyName, questionToken: QuestionToken | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): MethodDeclaration;
-        createConstructorDeclaration(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
-        updateConstructorDeclaration(node: ConstructorDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
+        createConstructorDeclaration(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
+        updateConstructorDeclaration(node: ConstructorDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], body: Block | undefined): ConstructorDeclaration;
         createGetAccessorDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | PropertyName, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): GetAccessorDeclaration;
         updateGetAccessorDeclaration(node: GetAccessorDeclaration, modifiers: readonly ModifierLike[] | undefined, name: PropertyName, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): GetAccessorDeclaration;
         createSetAccessorDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | PropertyName, parameters: readonly ParameterDeclaration[], body: Block | undefined): SetAccessorDeclaration;
@@ -3594,8 +3597,8 @@ declare namespace ts {
         updateCallSignature(node: CallSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): CallSignatureDeclaration;
         createConstructSignature(typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined): ConstructSignatureDeclaration;
         updateConstructSignature(node: ConstructSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): ConstructSignatureDeclaration;
-        createIndexSignature(modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
-        updateIndexSignature(node: IndexSignatureDeclaration, modifiers: readonly Modifier[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
+        createIndexSignature(modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
+        updateIndexSignature(node: IndexSignatureDeclaration, modifiers: readonly ModifierLike[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode): IndexSignatureDeclaration;
         createTemplateLiteralTypeSpan(type: TypeNode, literal: TemplateMiddle | TemplateTail): TemplateLiteralTypeSpan;
         updateTemplateLiteralTypeSpan(node: TemplateLiteralTypeSpan, type: TypeNode, literal: TemplateMiddle | TemplateTail): TemplateLiteralTypeSpan;
         createClassStaticBlockDeclaration(body: Block): ClassStaticBlockDeclaration;
@@ -3731,8 +3734,8 @@ declare namespace ts {
         createSemicolonClassElement(): SemicolonClassElement;
         createBlock(statements: readonly Statement[], multiLine?: boolean): Block;
         updateBlock(node: Block, statements: readonly Statement[]): Block;
-        createVariableStatement(modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]): VariableStatement;
-        updateVariableStatement(node: VariableStatement, modifiers: readonly Modifier[] | undefined, declarationList: VariableDeclarationList): VariableStatement;
+        createVariableStatement(modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList | readonly VariableDeclaration[]): VariableStatement;
+        updateVariableStatement(node: VariableStatement, modifiers: readonly ModifierLike[] | undefined, declarationList: VariableDeclarationList): VariableStatement;
         createEmptyStatement(): EmptyStatement;
         createExpressionStatement(expression: Expression): ExpressionStatement;
         updateExpressionStatement(node: ExpressionStatement, expression: Expression): ExpressionStatement;
@@ -3773,24 +3776,24 @@ declare namespace ts {
         updateFunctionDeclaration(node: FunctionDeclaration, modifiers: readonly ModifierLike[] | undefined, asteriskToken: AsteriskToken | undefined, name: Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, parameters: readonly ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined): FunctionDeclaration;
         createClassDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly ClassElement[]): ClassDeclaration;
         updateClassDeclaration(node: ClassDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier | undefined, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly ClassElement[]): ClassDeclaration;
-        createInterfaceDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
-        updateInterfaceDeclaration(node: InterfaceDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
-        createTypeAliasDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
-        updateTypeAliasDeclaration(node: TypeAliasDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
-        createEnumDeclaration(modifiers: readonly Modifier[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration;
-        updateEnumDeclaration(node: EnumDeclaration, modifiers: readonly Modifier[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration;
-        createModuleDeclaration(modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration;
-        updateModuleDeclaration(node: ModuleDeclaration, modifiers: readonly Modifier[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration;
+        createInterfaceDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
+        updateInterfaceDeclaration(node: InterfaceDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, heritageClauses: readonly HeritageClause[] | undefined, members: readonly TypeElement[]): InterfaceDeclaration;
+        createTypeAliasDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
+        updateTypeAliasDeclaration(node: TypeAliasDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, typeParameters: readonly TypeParameterDeclaration[] | undefined, type: TypeNode): TypeAliasDeclaration;
+        createEnumDeclaration(modifiers: readonly ModifierLike[] | undefined, name: string | Identifier, members: readonly EnumMember[]): EnumDeclaration;
+        updateEnumDeclaration(node: EnumDeclaration, modifiers: readonly ModifierLike[] | undefined, name: Identifier, members: readonly EnumMember[]): EnumDeclaration;
+        createModuleDeclaration(modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined, flags?: NodeFlags): ModuleDeclaration;
+        updateModuleDeclaration(node: ModuleDeclaration, modifiers: readonly ModifierLike[] | undefined, name: ModuleName, body: ModuleBody | undefined): ModuleDeclaration;
         createModuleBlock(statements: readonly Statement[]): ModuleBlock;
         updateModuleBlock(node: ModuleBlock, statements: readonly Statement[]): ModuleBlock;
         createCaseBlock(clauses: readonly CaseOrDefaultClause[]): CaseBlock;
         updateCaseBlock(node: CaseBlock, clauses: readonly CaseOrDefaultClause[]): CaseBlock;
         createNamespaceExportDeclaration(name: string | Identifier): NamespaceExportDeclaration;
         updateNamespaceExportDeclaration(node: NamespaceExportDeclaration, name: Identifier): NamespaceExportDeclaration;
-        createImportEqualsDeclaration(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-        updateImportEqualsDeclaration(node: ImportEqualsDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-        createImportDeclaration(modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration;
-        updateImportDeclaration(node: ImportDeclaration, modifiers: readonly Modifier[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration;
+        createImportEqualsDeclaration(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
+        updateImportEqualsDeclaration(node: ImportEqualsDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
+        createImportDeclaration(modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause?: AssertClause): ImportDeclaration;
+        updateImportDeclaration(node: ImportDeclaration, modifiers: readonly ModifierLike[] | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression, assertClause: AssertClause | undefined): ImportDeclaration;
         createImportClause(isTypeOnly: boolean, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
         updateImportClause(node: ImportClause, isTypeOnly: boolean, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
         createAssertClause(elements: NodeArray<AssertEntry>, multiLine?: boolean): AssertClause;
@@ -3807,10 +3810,10 @@ declare namespace ts {
         updateNamedImports(node: NamedImports, elements: readonly ImportSpecifier[]): NamedImports;
         createImportSpecifier(isTypeOnly: boolean, propertyName: Identifier | undefined, name: Identifier): ImportSpecifier;
         updateImportSpecifier(node: ImportSpecifier, isTypeOnly: boolean, propertyName: Identifier | undefined, name: Identifier): ImportSpecifier;
-        createExportAssignment(modifiers: readonly Modifier[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment;
-        updateExportAssignment(node: ExportAssignment, modifiers: readonly Modifier[] | undefined, expression: Expression): ExportAssignment;
-        createExportDeclaration(modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration;
-        updateExportDeclaration(node: ExportDeclaration, modifiers: readonly Modifier[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration;
+        createExportAssignment(modifiers: readonly ModifierLike[] | undefined, isExportEquals: boolean | undefined, expression: Expression): ExportAssignment;
+        updateExportAssignment(node: ExportAssignment, modifiers: readonly ModifierLike[] | undefined, expression: Expression): ExportAssignment;
+        createExportDeclaration(modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier?: Expression, assertClause?: AssertClause): ExportDeclaration;
+        updateExportDeclaration(node: ExportDeclaration, modifiers: readonly ModifierLike[] | undefined, isTypeOnly: boolean, exportClause: NamedExportBindings | undefined, moduleSpecifier: Expression | undefined, assertClause: AssertClause | undefined): ExportDeclaration;
         createNamedExports(elements: readonly ExportSpecifier[]): NamedExports;
         updateNamedExports(node: NamedExports, elements: readonly ExportSpecifier[]): NamedExports;
         createExportSpecifier(isTypeOnly: boolean, propertyName: string | Identifier | undefined, name: string | Identifier): ExportSpecifier;
@@ -5466,6 +5469,12 @@ declare namespace ts {
      * Visits an iteration body, adding any block-scoped variables required by the transformation.
      */
     function visitIterationBody(body: Statement, visitor: Visitor, context: TransformationContext): Statement;
+    /**
+     * Visits the elements of a {@link CommaListExpression}.
+     * @param visitor The visitor to use when visiting expressions whose result will not be discarded at runtime.
+     * @param discardVisitor The visitor to use when visiting expressions whose result will be discarded at runtime. Defaults to {@link visitor}.
+     */
+    function visitCommaListElements(elements: NodeArray<Expression>, visitor: Visitor, discardVisitor?: Visitor): NodeArray<Expression>;
     /**
      * Visits each child of a Node using the supplied visitor, possibly returning a new Node of the same kind in its place.
      *
diff --git a/tests/baselines/reference/autoAccessor5(target=es2015).js b/tests/baselines/reference/autoAccessor5(target=es2015).js
index a7394e4d18c8a..6f204b8217dcf 100644
--- a/tests/baselines/reference/autoAccessor5(target=es2015).js
+++ b/tests/baselines/reference/autoAccessor5(target=es2015).js
@@ -45,6 +45,6 @@ class C2 {
     constructor() {
         _C2__e_accessor_storage.set(this, 1);
     }
-    get [(_C2__e_accessor_storage = new WeakMap(), _b = f(), _b)]() { return __classPrivateFieldGet(this, _C2__e_accessor_storage, "f"); }
+    get [(_C2__e_accessor_storage = new WeakMap(), _b = f())]() { return __classPrivateFieldGet(this, _C2__e_accessor_storage, "f"); }
     set [_b](value) { __classPrivateFieldSet(this, _C2__e_accessor_storage, value, "f"); }
 }
diff --git a/tests/baselines/reference/autoAccessor5(target=es2022).js b/tests/baselines/reference/autoAccessor5(target=es2022).js
index f5022161cea00..f79577e076791 100644
--- a/tests/baselines/reference/autoAccessor5(target=es2022).js
+++ b/tests/baselines/reference/autoAccessor5(target=es2022).js
@@ -29,6 +29,6 @@ class C1 {
 }
 class C2 {
     #_e_accessor_storage = 1;
-    get [(_a = f(), _a)]() { return this.#_e_accessor_storage; }
+    get [_a = f()]() { return this.#_e_accessor_storage; }
     set [_a](value) { this.#_e_accessor_storage = value; }
 }
diff --git a/tests/baselines/reference/autoAccessor5(target=es5).js b/tests/baselines/reference/autoAccessor5(target=es5).js
index 093dceb5fbd26..beb08668b0d50 100644
--- a/tests/baselines/reference/autoAccessor5(target=es5).js
+++ b/tests/baselines/reference/autoAccessor5(target=es5).js
@@ -67,7 +67,7 @@ var C2 = /** @class */ (function () {
     function C2() {
         _C2__a_accessor_storage.set(this, 1);
     }
-    Object.defineProperty(C2.prototype, (_C2__a_accessor_storage = new WeakMap(), _a = f(), _a), {
+    Object.defineProperty(C2.prototype, (_C2__a_accessor_storage = new WeakMap(), _a = f()), {
         get: function () { return __classPrivateFieldGet(this, _C2__a_accessor_storage, "f"); },
         enumerable: false,
         configurable: true
diff --git a/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js b/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js
index 8ddcf18df29ac..0190553561270 100644
--- a/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js
+++ b/tests/baselines/reference/blockScopedVariablesUseBeforeDef.js
@@ -173,6 +173,10 @@ var __generator = (this && this.__generator) || function (thisArg, body) {
         if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
     }
 };
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 function foo0() {
     var a = x;
     var x;
@@ -238,6 +242,7 @@ function foo9() {
             }
             return class_2;
         }()),
+        __setFunctionName(_a, "y"),
         _a.a = x,
         _a);
     var x;
@@ -259,6 +264,7 @@ function foo11() {
                 }
                 return class_3;
             }()),
+            __setFunctionName(_a, "y"),
             _a.a = x,
             _a);
     }
diff --git a/tests/baselines/reference/capturedParametersInInitializers2.js b/tests/baselines/reference/capturedParametersInInitializers2.js
index da1f63b58e622..1e84e0fe23685 100644
--- a/tests/baselines/reference/capturedParametersInInitializers2.js
+++ b/tests/baselines/reference/capturedParametersInInitializers2.js
@@ -15,6 +15,10 @@ function foo2(y = class {[x] = x}, x = 1) {
 }
 
 //// [capturedParametersInInitializers2.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 function foo(y, x, z) {
     var _a;
     if (y === void 0) { y = (_a = /** @class */ (function () {
@@ -29,6 +33,7 @@ function foo(y, x, z) {
             class_1.prototype[z] = function () { return z; };
             return class_1;
         }()),
+        __setFunctionName(_a, "y"),
         _a.c = x,
         _a); }
     if (x === void 0) { x = 1; }
diff --git a/tests/baselines/reference/checkIndexConstraintOfJavascriptClassExpression.errors.txt b/tests/baselines/reference/checkIndexConstraintOfJavascriptClassExpression.errors.txt
index 2a99b34bf064e..a8067965c68f0 100644
--- a/tests/baselines/reference/checkIndexConstraintOfJavascriptClassExpression.errors.txt
+++ b/tests/baselines/reference/checkIndexConstraintOfJavascriptClassExpression.errors.txt
@@ -9,7 +9,7 @@ tests/cases/compiler/weird.js(9,17): error TS7006: Parameter 'error' implicitly
     someFunction(function(BaseClass) {
     ~~~~~~~~~~~~
 !!! error TS2552: Cannot find name 'someFunction'. Did you mean 'Function'?
-!!! related TS2728 /.ts/lib.es5.d.ts:318:13: 'Function' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:321:13: 'Function' is declared here.
                           ~~~~~~~~~
 !!! error TS7006: Parameter 'BaseClass' implicitly has an 'any' type.
         'use strict';
diff --git a/tests/baselines/reference/classExpressionWithDecorator1.errors.txt b/tests/baselines/reference/classExpressionWithDecorator1.errors.txt
index 10f0d8aa37684..9139704c18cf2 100644
--- a/tests/baselines/reference/classExpressionWithDecorator1.errors.txt
+++ b/tests/baselines/reference/classExpressionWithDecorator1.errors.txt
@@ -1,10 +1,7 @@
-tests/cases/compiler/classExpressionWithDecorator1.ts(1,9): error TS1109: Expression expected.
-tests/cases/compiler/classExpressionWithDecorator1.ts(1,10): error TS2304: Cannot find name 'decorate'.
+tests/cases/compiler/classExpressionWithDecorator1.ts(1,9): error TS1206: Decorators are not valid here.
 
 
-==== tests/cases/compiler/classExpressionWithDecorator1.ts (2 errors) ====
+==== tests/cases/compiler/classExpressionWithDecorator1.ts (1 errors) ====
     var v = @decorate class C { static p = 1 };
             ~
-!!! error TS1109: Expression expected.
-             ~~~~~~~~
-!!! error TS2304: Cannot find name 'decorate'.
\ No newline at end of file
+!!! error TS1206: Decorators are not valid here.
\ No newline at end of file
diff --git a/tests/baselines/reference/classExpressionWithDecorator1.js b/tests/baselines/reference/classExpressionWithDecorator1.js
index e96bc7d46d2cb..aedf550c02568 100644
--- a/tests/baselines/reference/classExpressionWithDecorator1.js
+++ b/tests/baselines/reference/classExpressionWithDecorator1.js
@@ -2,20 +2,11 @@
 var v = @decorate class C { static p = 1 };
 
 //// [classExpressionWithDecorator1.js]
-var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
-    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
-    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
-    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
-    return c > 3 && r && Object.defineProperty(target, key, r), r;
-};
-var v = ;
-var C = /** @class */ (function () {
-    function C() {
-    }
-    C.p = 1;
-    C = __decorate([
-        decorate
-    ], C);
-    return C;
-}());
-;
+var _a;
+var v = (_a = /** @class */ (function () {
+        function C() {
+        }
+        return C;
+    }()),
+    _a.p = 1,
+    _a);
diff --git a/tests/baselines/reference/classExpressionWithDecorator1.types b/tests/baselines/reference/classExpressionWithDecorator1.types
index b153eabefa969..27922b1ae7b8b 100644
--- a/tests/baselines/reference/classExpressionWithDecorator1.types
+++ b/tests/baselines/reference/classExpressionWithDecorator1.types
@@ -1,9 +1,9 @@
 === tests/cases/compiler/classExpressionWithDecorator1.ts ===
 var v = @decorate class C { static p = 1 };
->v : any
-> : any
+>v : typeof C
+>@decorate class C { static p = 1 } : typeof C
 >decorate : any
->C : C
+>C : typeof C
 >p : number
 >1 : 1
 
diff --git a/tests/baselines/reference/classStaticBlock18(target=es2015).js b/tests/baselines/reference/classStaticBlock18(target=es2015).js
index 7269e6f67a78d..f9ea77a2e9702 100644
--- a/tests/baselines/reference/classStaticBlock18(target=es2015).js
+++ b/tests/baselines/reference/classStaticBlock18(target=es2015).js
@@ -15,6 +15,10 @@ function foo () {
 
 
 //// [classStaticBlock18.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 function foo() {
     var _a;
     return _a = class {
@@ -24,6 +28,7 @@ function foo() {
             var _a;
             const c = (_a = class {
                 },
+                __setFunctionName(_a, "c"),
                 _a.bar = 2,
                 (() => {
                     // do
diff --git a/tests/baselines/reference/classStaticBlock18(target=es5).js b/tests/baselines/reference/classStaticBlock18(target=es5).js
index 48597ad94cc17..5367bf93d89cc 100644
--- a/tests/baselines/reference/classStaticBlock18(target=es5).js
+++ b/tests/baselines/reference/classStaticBlock18(target=es5).js
@@ -15,6 +15,10 @@ function foo () {
 
 
 //// [classStaticBlock18.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 function foo() {
     var _a;
     return _a = /** @class */ (function () {
@@ -30,6 +34,7 @@ function foo() {
                     }
                     return class_2;
                 }()),
+                __setFunctionName(_a, "c"),
                 _a.bar = 2,
                 (function () {
                     // do
diff --git a/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es2015).js b/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es2015).js
index fd89bcefa8bb3..c00b4efd32d10 100644
--- a/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es2015).js
+++ b/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es2015).js
@@ -3,8 +3,13 @@
 ((b = class { static x = 1 }) => {})();
 
 //// [classWithStaticFieldInParameterInitializer.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 // https://github.com/microsoft/TypeScript/issues/36295
 ((b) => { var _a; if (b === void 0) { b = (_a = class {
     },
+    __setFunctionName(_a, "b"),
     _a.x = 1,
     _a); } })();
diff --git a/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es5).js b/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es5).js
index 30142396a8e64..c50fa92916a5c 100644
--- a/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es5).js
+++ b/tests/baselines/reference/classWithStaticFieldInParameterInitializer(target=es5).js
@@ -3,6 +3,10 @@
 ((b = class { static x = 1 }) => {})();
 
 //// [classWithStaticFieldInParameterInitializer.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 // https://github.com/microsoft/TypeScript/issues/36295
 (function (b) {
     var _a;
@@ -11,6 +15,7 @@
             }
             return class_1;
         }()),
+        __setFunctionName(_a, "b"),
         _a.x = 1,
         _a); }
 })();
diff --git a/tests/baselines/reference/commonJSImportAsPrimaryExpression.js b/tests/baselines/reference/commonJSImportAsPrimaryExpression.js
index a02e7388fbfa8..566de077611a7 100644
--- a/tests/baselines/reference/commonJSImportAsPrimaryExpression.js
+++ b/tests/baselines/reference/commonJSImportAsPrimaryExpression.js
@@ -17,14 +17,13 @@ if(foo.C1.s1){
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.C1 = void 0;
-var C1 = /** @class */ (function () {
+var C1 = exports.C1 = /** @class */ (function () {
     function C1() {
         this.m1 = 42;
     }
     C1.s1 = true;
     return C1;
 }());
-exports.C1 = C1;
 //// [foo_1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/commonJSImportNotAsPrimaryExpression.js b/tests/baselines/reference/commonJSImportNotAsPrimaryExpression.js
index 7ef8a6e2e8858..defd792f3947a 100644
--- a/tests/baselines/reference/commonJSImportNotAsPrimaryExpression.js
+++ b/tests/baselines/reference/commonJSImportNotAsPrimaryExpression.js
@@ -35,14 +35,13 @@ var e: number = <foo.E1>0;
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.E1 = exports.C1 = void 0;
-var C1 = /** @class */ (function () {
+var C1 = exports.C1 = /** @class */ (function () {
     function C1() {
         this.m1 = 42;
     }
     C1.s1 = true;
     return C1;
 }());
-exports.C1 = C1;
 var E1;
 (function (E1) {
     E1[E1["A"] = 0] = "A";
diff --git a/tests/baselines/reference/completionsStringMethods.baseline b/tests/baselines/reference/completionsStringMethods.baseline
index d40c12a3539b0..1bea1679c2efa 100644
--- a/tests/baselines/reference/completionsStringMethods.baseline
+++ b/tests/baselines/reference/completionsStringMethods.baseline
@@ -1078,7 +1078,7 @@
                   "target": {
                     "fileName": "lib.d.ts",
                     "textSpan": {
-                      "start": 18451,
+                      "start": 18529,
                       "length": 28
                     }
                   }
@@ -1101,7 +1101,7 @@
                   "target": {
                     "fileName": "lib.d.ts",
                     "textSpan": {
-                      "start": 18451,
+                      "start": 18529,
                       "length": 28
                     }
                   }
diff --git a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js
index 6829ad887310c..1ceb78426146d 100644
--- a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js	
+++ b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js	
@@ -10,4 +10,4 @@ WatchOptions::
 FileNames::
 es7,0.ts
 Errors::
-error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js
index 6c5918632f8f5..a0d83c38d378d 100644
--- a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js	
+++ b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js	
@@ -10,4 +10,4 @@ WatchOptions::
 FileNames::
 es7,0.ts
 Errors::
-error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js
index 8d0b48aca3004..3309e00f86fcf 100644
--- a/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js	
+++ b/tests/baselines/reference/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js	
@@ -10,4 +10,4 @@ WatchOptions::
 FileNames::
 0.ts
 Errors::
-error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
diff --git a/tests/baselines/reference/config/initTSConfig/Default initialized TSConfig/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Default initialized TSConfig/tsconfig.json
index 44f0d12a60dce..3d657071fcc69 100644
--- a/tests/baselines/reference/config/initTSConfig/Default initialized TSConfig/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Default initialized TSConfig/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --help/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --help/tsconfig.json
index 44f0d12a60dce..3d657071fcc69 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --help/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --help/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --watch/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --watch/tsconfig.json
index 44f0d12a60dce..3d657071fcc69 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --watch/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with --watch/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with advanced options/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with advanced options/tsconfig.json
index ec9755595785c..8c04d74cb873a 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with advanced options/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with advanced options/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with boolean value compiler options/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with boolean value compiler options/tsconfig.json
index dc1cbd0260ee9..c846ee106d5ff 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with boolean value compiler options/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with boolean value compiler options/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with enum value compiler options/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with enum value compiler options/tsconfig.json
index 0c2b3cef5e01b..3c2bbae0f8d0f 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with enum value compiler options/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with enum value compiler options/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es5",                                     /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     "jsx": "react",                                      /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with files options/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with files options/tsconfig.json
index 924da33ea0c00..d0d41011037ce 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with files options/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with files options/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option value/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option value/tsconfig.json
index 4a82bf2b3c90c..a9cfa7ac7b4da 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option value/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option value/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     "lib": ["es5","es2015.promise"],                     /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option/tsconfig.json
index 44f0d12a60dce..3d657071fcc69 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with incorrect compiler option/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options with enum value/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options with enum value/tsconfig.json
index 6e11011c888e7..f0c0827039874 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options with enum value/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options with enum value/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     "lib": ["es5","es2015.core"],                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options/tsconfig.json b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options/tsconfig.json
index 9e7148c874a29..bf3f08ec05292 100644
--- a/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options/tsconfig.json	
+++ b/tests/baselines/reference/config/initTSConfig/Initialized TSConfig with list compiler options/tsconfig.json	
@@ -14,7 +14,7 @@
     "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
     // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
     // "jsx": "preserve",                                /* Specify what JSX code is generated. */
-    // "experimentalDecorators": true,                   /* Enable experimental support for TC39 stage 2 draft decorators. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
     // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
     // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
     // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
diff --git a/tests/baselines/reference/customTransforms/before+decorators.js b/tests/baselines/reference/customTransforms/before+decorators.js
index ef705f0c9d850..7901f9846d9ce 100644
--- a/tests/baselines/reference/customTransforms/before+decorators.js
+++ b/tests/baselines/reference/customTransforms/before+decorators.js
@@ -13,7 +13,7 @@ var B = /** @class */ (function () {
     }
     return B;
 }());
-var C = /** @class */ (function () {
+export var C = /** @class */ (function () {
     function C(b) {
     }
     C = __decorate([
@@ -22,5 +22,4 @@ var C = /** @class */ (function () {
     ], C);
     return C;
 }());
-export { C };
 "changed";
diff --git a/tests/baselines/reference/declarationEmitLocalClassHasRequiredDeclare.js b/tests/baselines/reference/declarationEmitLocalClassHasRequiredDeclare.js
index c83e9c7377605..2b44e0e9f1ea2 100644
--- a/tests/baselines/reference/declarationEmitLocalClassHasRequiredDeclare.js
+++ b/tests/baselines/reference/declarationEmitLocalClassHasRequiredDeclare.js
@@ -24,13 +24,12 @@ var X = /** @class */ (function () {
     }
     return X;
 }());
-var A = /** @class */ (function () {
+var A = exports.A = /** @class */ (function () {
     function A() {
     }
     A.X = X;
     return A;
 }());
-exports.A = A;
 var Y = /** @class */ (function () {
     function Y() {
     }
diff --git a/tests/baselines/reference/decoratedDefaultExportsGetExportedAmd.symbols b/tests/baselines/reference/decoratedDefaultExportsGetExportedAmd.symbols
index 3e7ec56892711..39f0a9e33311a 100644
--- a/tests/baselines/reference/decoratedDefaultExportsGetExportedAmd.symbols
+++ b/tests/baselines/reference/decoratedDefaultExportsGetExportedAmd.symbols
@@ -1,7 +1,7 @@
 === tests/cases/conformance/es6/moduleExportsAmd/a.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
@@ -12,7 +12,7 @@ export default class Foo {}
 === tests/cases/conformance/es6/moduleExportsAmd/b.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
diff --git a/tests/baselines/reference/decoratedDefaultExportsGetExportedCommonjs.symbols b/tests/baselines/reference/decoratedDefaultExportsGetExportedCommonjs.symbols
index 383d7d2c0d2f2..36099c99f9847 100644
--- a/tests/baselines/reference/decoratedDefaultExportsGetExportedCommonjs.symbols
+++ b/tests/baselines/reference/decoratedDefaultExportsGetExportedCommonjs.symbols
@@ -1,7 +1,7 @@
 === tests/cases/conformance/es6/moduleExportsCommonjs/a.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
@@ -12,7 +12,7 @@ export default class Foo {}
 === tests/cases/conformance/es6/moduleExportsCommonjs/b.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
diff --git a/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.symbols b/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.symbols
index 73898da76c41a..ecc2e079809bd 100644
--- a/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.symbols
+++ b/tests/baselines/reference/decoratedDefaultExportsGetExportedSystem.symbols
@@ -1,7 +1,7 @@
 === tests/cases/conformance/es6/moduleExportsSystem/a.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
@@ -12,7 +12,7 @@ export default class Foo {}
 === tests/cases/conformance/es6/moduleExportsSystem/b.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
diff --git a/tests/baselines/reference/decoratedDefaultExportsGetExportedUmd.symbols b/tests/baselines/reference/decoratedDefaultExportsGetExportedUmd.symbols
index f93e5411306d7..9bc47a1f73699 100644
--- a/tests/baselines/reference/decoratedDefaultExportsGetExportedUmd.symbols
+++ b/tests/baselines/reference/decoratedDefaultExportsGetExportedUmd.symbols
@@ -1,7 +1,7 @@
 === tests/cases/conformance/es6/moduleExportsUmd/a.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(a.ts, 0, 3))
@@ -12,7 +12,7 @@ export default class Foo {}
 === tests/cases/conformance/es6/moduleExportsUmd/b.ts ===
 var decorator: ClassDecorator;
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @decorator
 >decorator : Symbol(decorator, Decl(b.ts, 0, 3))
diff --git a/tests/baselines/reference/decoratorCallGeneric.errors.txt b/tests/baselines/reference/decoratorCallGeneric.errors.txt
index 495160a191b0e..bbb0007a0581f 100644
--- a/tests/baselines/reference/decoratorCallGeneric.errors.txt
+++ b/tests/baselines/reference/decoratorCallGeneric.errors.txt
@@ -1,6 +1,7 @@
-tests/cases/conformance/decorators/decoratorCallGeneric.ts(7,2): error TS2345: Argument of type 'typeof C' is not assignable to parameter of type 'I<C>'.
-  The types returned by 'm()' are incompatible between these types.
-    Type 'void' is not assignable to type 'C'.
+tests/cases/conformance/decorators/decoratorCallGeneric.ts(7,2): error TS1238: Unable to resolve signature of class decorator when called as an expression.
+  Argument of type 'typeof C' is not assignable to parameter of type 'I<C>'.
+    The types returned by 'm()' are incompatible between these types.
+      Type 'void' is not assignable to type 'C'.
 
 
 ==== tests/cases/conformance/decorators/decoratorCallGeneric.ts (1 errors) ====
@@ -12,9 +13,10 @@ tests/cases/conformance/decorators/decoratorCallGeneric.ts(7,2): error TS2345: A
     
     @dec
      ~~~
-!!! error TS2345: Argument of type 'typeof C' is not assignable to parameter of type 'I<C>'.
-!!! error TS2345:   The types returned by 'm()' are incompatible between these types.
-!!! error TS2345:     Type 'void' is not assignable to type 'C'.
+!!! error TS1238: Unable to resolve signature of class decorator when called as an expression.
+!!! error TS1238:   Argument of type 'typeof C' is not assignable to parameter of type 'I<C>'.
+!!! error TS1238:     The types returned by 'm()' are incompatible between these types.
+!!! error TS1238:       Type 'void' is not assignable to type 'C'.
     class C {
         _brand: any;
         static m() {}
diff --git a/tests/baselines/reference/decoratorChecksFunctionBodies.errors.txt b/tests/baselines/reference/decoratorChecksFunctionBodies.errors.txt
index f9dd5b63b57e5..f6c467324aef6 100644
--- a/tests/baselines/reference/decoratorChecksFunctionBodies.errors.txt
+++ b/tests/baselines/reference/decoratorChecksFunctionBodies.errors.txt
@@ -7,12 +7,12 @@ tests/cases/conformance/decorators/class/decoratorChecksFunctionBodies.ts(8,14):
     }
     
     class A {
-        @((x, p) => {
+        @((x, p, d) => {
             var a = 3;
             func(a);
                  ~
 !!! error TS2345: Argument of type 'number' is not assignable to parameter of type 'string'.
-            return x; 
+            return d;
         })
         m() {
     
diff --git a/tests/baselines/reference/decoratorChecksFunctionBodies.js b/tests/baselines/reference/decoratorChecksFunctionBodies.js
index 38f0784939f1e..30c8264e45ba8 100644
--- a/tests/baselines/reference/decoratorChecksFunctionBodies.js
+++ b/tests/baselines/reference/decoratorChecksFunctionBodies.js
@@ -4,10 +4,10 @@ function func(s: string): void {
 }
 
 class A {
-    @((x, p) => {
+    @((x, p, d) => {
         var a = 3;
         func(a);
-        return x; 
+        return d;
     })
     m() {
 
@@ -30,10 +30,10 @@ var A = /** @class */ (function () {
     A.prototype.m = function () {
     };
     __decorate([
-        (function (x, p) {
+        (function (x, p, d) {
             var a = 3;
             func(a);
-            return x;
+            return d;
         })
     ], A.prototype, "m", null);
     return A;
diff --git a/tests/baselines/reference/decoratorChecksFunctionBodies.symbols b/tests/baselines/reference/decoratorChecksFunctionBodies.symbols
index d199350138578..c71462e75f7e5 100644
--- a/tests/baselines/reference/decoratorChecksFunctionBodies.symbols
+++ b/tests/baselines/reference/decoratorChecksFunctionBodies.symbols
@@ -8,9 +8,10 @@ function func(s: string): void {
 class A {
 >A : Symbol(A, Decl(decoratorChecksFunctionBodies.ts, 2, 1))
 
-    @((x, p) => {
+    @((x, p, d) => {
 >x : Symbol(x, Decl(decoratorChecksFunctionBodies.ts, 5, 7))
 >p : Symbol(p, Decl(decoratorChecksFunctionBodies.ts, 5, 9))
+>d : Symbol(d, Decl(decoratorChecksFunctionBodies.ts, 5, 12))
 
         var a = 3;
 >a : Symbol(a, Decl(decoratorChecksFunctionBodies.ts, 6, 11))
@@ -19,8 +20,8 @@ class A {
 >func : Symbol(func, Decl(decoratorChecksFunctionBodies.ts, 0, 0))
 >a : Symbol(a, Decl(decoratorChecksFunctionBodies.ts, 6, 11))
 
-        return x; 
->x : Symbol(x, Decl(decoratorChecksFunctionBodies.ts, 5, 7))
+        return d;
+>d : Symbol(d, Decl(decoratorChecksFunctionBodies.ts, 5, 12))
 
     })
     m() {
diff --git a/tests/baselines/reference/decoratorChecksFunctionBodies.types b/tests/baselines/reference/decoratorChecksFunctionBodies.types
index c1f5c581b2194..8663e1d84043e 100644
--- a/tests/baselines/reference/decoratorChecksFunctionBodies.types
+++ b/tests/baselines/reference/decoratorChecksFunctionBodies.types
@@ -8,11 +8,12 @@ function func(s: string): void {
 class A {
 >A : A
 
-    @((x, p) => {
->((x, p) => {        var a = 3;        func(a);        return x;     }) : (x: any, p: any) => any
->(x, p) => {        var a = 3;        func(a);        return x;     } : (x: any, p: any) => any
->x : any
->p : any
+    @((x, p, d) => {
+>((x, p, d) => {        var a = 3;        func(a);        return d;    }) : (x: A, p: "m", d: TypedPropertyDescriptor<() => void>) => TypedPropertyDescriptor<() => void>
+>(x, p, d) => {        var a = 3;        func(a);        return d;    } : (x: A, p: "m", d: TypedPropertyDescriptor<() => void>) => TypedPropertyDescriptor<() => void>
+>x : A
+>p : "m"
+>d : TypedPropertyDescriptor<() => void>
 
         var a = 3;
 >a : number
@@ -23,8 +24,8 @@ class A {
 >func : (s: string) => void
 >a : number
 
-        return x; 
->x : any
+        return d;
+>d : TypedPropertyDescriptor<() => void>
 
     })
     m() {
diff --git a/tests/baselines/reference/decoratorInJsFile1.errors.txt b/tests/baselines/reference/decoratorInJsFile1.errors.txt
index e436dfca859d7..3524eb863e51e 100644
--- a/tests/baselines/reference/decoratorInJsFile1.errors.txt
+++ b/tests/baselines/reference/decoratorInJsFile1.errors.txt
@@ -1,12 +1,9 @@
-tests/cases/compiler/a.js(2,7): error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
 tests/cases/compiler/a.js(3,12): error TS8010: Type annotations can only be used in TypeScript files.
 
 
-==== tests/cases/compiler/a.js (2 errors) ====
+==== tests/cases/compiler/a.js (1 errors) ====
     @SomeDecorator
     class SomeClass {
-          ~~~~~~~~~
-!!! error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
         foo(x: number) {
                ~~~~~~
 !!! error TS8010: Type annotations can only be used in TypeScript files.
diff --git a/tests/baselines/reference/decoratorMetadataConditionalType.symbols b/tests/baselines/reference/decoratorMetadataConditionalType.symbols
index 251a2bd77ba4a..9174571f8be37 100644
--- a/tests/baselines/reference/decoratorMetadataConditionalType.symbols
+++ b/tests/baselines/reference/decoratorMetadataConditionalType.symbols
@@ -1,7 +1,7 @@
 === tests/cases/compiler/decoratorMetadataConditionalType.ts ===
 declare function d(): PropertyDecorator;
 >d : Symbol(d, Decl(decoratorMetadataConditionalType.ts, 0, 0))
->PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.es5.d.ts, --, --))
+>PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 abstract class BaseEntity<T> {
 >BaseEntity : Symbol(BaseEntity, Decl(decoratorMetadataConditionalType.ts, 0, 40))
diff --git a/tests/baselines/reference/decoratorMetadataGenericTypeVariable.js b/tests/baselines/reference/decoratorMetadataGenericTypeVariable.js
index bf890a8860c23..21d2003f066fa 100644
--- a/tests/baselines/reference/decoratorMetadataGenericTypeVariable.js
+++ b/tests/baselines/reference/decoratorMetadataGenericTypeVariable.js
@@ -18,7 +18,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.C = void 0;
-var C = /** @class */ (function () {
+var C = exports.C = /** @class */ (function () {
     function C() {
     }
     __decorate([
@@ -27,4 +27,3 @@ var C = /** @class */ (function () {
     ], C.prototype, "member", void 0);
     return C;
 }());
-exports.C = C;
diff --git a/tests/baselines/reference/decoratorMetadataGenericTypeVariableDefault.js b/tests/baselines/reference/decoratorMetadataGenericTypeVariableDefault.js
index 2bddc48ae878f..619b822955570 100644
--- a/tests/baselines/reference/decoratorMetadataGenericTypeVariableDefault.js
+++ b/tests/baselines/reference/decoratorMetadataGenericTypeVariableDefault.js
@@ -18,7 +18,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.C = void 0;
-var C = /** @class */ (function () {
+var C = exports.C = /** @class */ (function () {
     function C() {
     }
     __decorate([
@@ -27,4 +27,3 @@ var C = /** @class */ (function () {
     ], C.prototype, "member", void 0);
     return C;
 }());
-exports.C = C;
diff --git a/tests/baselines/reference/decoratorMetadataGenericTypeVariableInScope.js b/tests/baselines/reference/decoratorMetadataGenericTypeVariableInScope.js
index be3b0d3dd18db..cf863b36f5a38 100644
--- a/tests/baselines/reference/decoratorMetadataGenericTypeVariableInScope.js
+++ b/tests/baselines/reference/decoratorMetadataGenericTypeVariableInScope.js
@@ -27,7 +27,7 @@ var TypeVariable = /** @class */ (function () {
     }
     return TypeVariable;
 }());
-var C = /** @class */ (function () {
+var C = exports.C = /** @class */ (function () {
     function C() {
     }
     __decorate([
@@ -36,4 +36,3 @@ var C = /** @class */ (function () {
     ], C.prototype, "member", void 0);
     return C;
 }());
-exports.C = C;
diff --git a/tests/baselines/reference/decoratorMetadataNoLibIsolatedModulesTypes.js b/tests/baselines/reference/decoratorMetadataNoLibIsolatedModulesTypes.js
index ca40daf943a52..6c6c57d19c8ec 100644
--- a/tests/baselines/reference/decoratorMetadataNoLibIsolatedModulesTypes.js
+++ b/tests/baselines/reference/decoratorMetadataNoLibIsolatedModulesTypes.js
@@ -18,7 +18,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.B = void 0;
-var B = /** @class */ (function () {
+var B = exports.B = /** @class */ (function () {
     function B() {
     }
     var _a;
@@ -28,4 +28,3 @@ var B = /** @class */ (function () {
     ], B.prototype, "member", void 0);
     return B;
 }());
-exports.B = B;
diff --git a/tests/baselines/reference/decoratorMetadataOnInferredType.js b/tests/baselines/reference/decoratorMetadataOnInferredType.js
index a2947a14efee4..8ea8ee7b06cbe 100644
--- a/tests/baselines/reference/decoratorMetadataOnInferredType.js
+++ b/tests/baselines/reference/decoratorMetadataOnInferredType.js
@@ -28,7 +28,7 @@ var A = /** @class */ (function () {
 }());
 function decorator(target, propertyKey) {
 }
-var B = /** @class */ (function () {
+var B = exports.B = /** @class */ (function () {
     function B() {
         this.x = new A();
     }
@@ -38,4 +38,3 @@ var B = /** @class */ (function () {
     ], B.prototype, "x", void 0);
     return B;
 }());
-exports.B = B;
diff --git a/tests/baselines/reference/decoratorMetadataPromise.symbols b/tests/baselines/reference/decoratorMetadataPromise.symbols
index f9a161f914815..594815bb05c7f 100644
--- a/tests/baselines/reference/decoratorMetadataPromise.symbols
+++ b/tests/baselines/reference/decoratorMetadataPromise.symbols
@@ -1,7 +1,7 @@
 === tests/cases/compiler/decoratorMetadataPromise.ts ===
 declare const decorator: MethodDecorator;
 >decorator : Symbol(decorator, Decl(decoratorMetadataPromise.ts, 0, 13))
->MethodDecorator : Symbol(MethodDecorator, Decl(lib.es5.d.ts, --, --))
+>MethodDecorator : Symbol(MethodDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 class A {
 >A : Symbol(A, Decl(decoratorMetadataPromise.ts, 0, 41))
diff --git a/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js b/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js
index c42cb65faa1de..ddb84dfe491a4 100644
--- a/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js
+++ b/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.js
@@ -90,7 +90,7 @@ function annotation() {
 function annotation1() {
     return function (target) { };
 }
-var ClassA = /** @class */ (function () {
+var ClassA = exports.ClassA = /** @class */ (function () {
     function ClassA() {
         var init = [];
         for (var _i = 0; _i < arguments.length; _i++) {
@@ -116,4 +116,3 @@ var ClassA = /** @class */ (function () {
     ], ClassA);
     return ClassA;
 }());
-exports.ClassA = ClassA;
diff --git a/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.symbols b/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.symbols
index 6bad65ed2839d..d0a4a054c0562 100644
--- a/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.symbols
+++ b/tests/baselines/reference/decoratorMetadataRestParameterWithImportedType.symbols
@@ -30,7 +30,7 @@ import { SomeClass1 } from './aux1';
 
 function annotation(): ClassDecorator {
 >annotation : Symbol(annotation, Decl(main.ts, 1, 36))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
     return (target: any): void => { };
 >target : Symbol(target, Decl(main.ts, 4, 12))
@@ -38,7 +38,7 @@ function annotation(): ClassDecorator {
 
 function annotation1(): MethodDecorator {
 >annotation1 : Symbol(annotation1, Decl(main.ts, 5, 1))
->MethodDecorator : Symbol(MethodDecorator, Decl(lib.es5.d.ts, --, --))
+>MethodDecorator : Symbol(MethodDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
     return (target: any): void => { };
 >target : Symbol(target, Decl(main.ts, 8, 12))
diff --git a/tests/baselines/reference/decoratorMetadataWithConstructorType.js b/tests/baselines/reference/decoratorMetadataWithConstructorType.js
index 8ff397af61bf0..97d310b0adf36 100644
--- a/tests/baselines/reference/decoratorMetadataWithConstructorType.js
+++ b/tests/baselines/reference/decoratorMetadataWithConstructorType.js
@@ -28,7 +28,7 @@ var A = /** @class */ (function () {
 }());
 function decorator(target, propertyKey) {
 }
-var B = /** @class */ (function () {
+var B = exports.B = /** @class */ (function () {
     function B() {
         this.x = new A();
     }
@@ -38,4 +38,3 @@ var B = /** @class */ (function () {
     ], B.prototype, "x", void 0);
     return B;
 }());
-exports.B = B;
diff --git a/tests/baselines/reference/decoratorMetadataWithTypeOnlyImport2.js b/tests/baselines/reference/decoratorMetadataWithTypeOnlyImport2.js
index bf1e1c2279c1a..f83e55a9fe239 100644
--- a/tests/baselines/reference/decoratorMetadataWithTypeOnlyImport2.js
+++ b/tests/baselines/reference/decoratorMetadataWithTypeOnlyImport2.js
@@ -41,7 +41,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.Main = void 0;
-var Main = /** @class */ (function () {
+var Main = exports.Main = /** @class */ (function () {
     function Main() {
     }
     __decorate([
@@ -50,4 +50,3 @@ var Main = /** @class */ (function () {
     ], Main.prototype, "field", void 0);
     return Main;
 }());
-exports.Main = Main;
diff --git a/tests/baselines/reference/decoratorOnArrowFunction.errors.txt b/tests/baselines/reference/decoratorOnArrowFunction.errors.txt
index 14bde1e49bf27..a764f935b485f 100644
--- a/tests/baselines/reference/decoratorOnArrowFunction.errors.txt
+++ b/tests/baselines/reference/decoratorOnArrowFunction.errors.txt
@@ -1,16 +1,13 @@
-tests/cases/conformance/decorators/invalid/decoratorOnArrowFunction.ts(3,9): error TS1109: Expression expected.
-tests/cases/conformance/decorators/invalid/decoratorOnArrowFunction.ts(3,16): error TS1146: Declaration expected.
-tests/cases/conformance/decorators/invalid/decoratorOnArrowFunction.ts(3,17): error TS1128: Declaration or statement expected.
+tests/cases/conformance/decorators/invalid/decoratorOnArrowFunction.ts(3,16): error TS1109: Expression expected.
+tests/cases/conformance/decorators/invalid/decoratorOnArrowFunction.ts(3,17): error TS1005: ';' expected.
 
 
-==== tests/cases/conformance/decorators/invalid/decoratorOnArrowFunction.ts (3 errors) ====
+==== tests/cases/conformance/decorators/invalid/decoratorOnArrowFunction.ts (2 errors) ====
     declare function dec<T>(target: T): T;
     
     var F = @dec () => {
-            ~
-!!! error TS1109: Expression expected.
                    
-!!! error TS1146: Declaration expected.
+!!! error TS1109: Expression expected.
                     ~~
-!!! error TS1128: Declaration or statement expected.
+!!! error TS1005: ';' expected.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnArrowFunction.types b/tests/baselines/reference/decoratorOnArrowFunction.types
index 84ca4a9ffbe88..0da7f5780272c 100644
--- a/tests/baselines/reference/decoratorOnArrowFunction.types
+++ b/tests/baselines/reference/decoratorOnArrowFunction.types
@@ -5,7 +5,6 @@ declare function dec<T>(target: T): T;
 
 var F = @dec () => {
 >F : any
-> : any
 >dec () : unknown
 >dec : <T>(target: T) => T
 }
diff --git a/tests/baselines/reference/decoratorOnClass2.js b/tests/baselines/reference/decoratorOnClass2.js
index 7acc17151f67f..3347c0481c2e3 100644
--- a/tests/baselines/reference/decoratorOnClass2.js
+++ b/tests/baselines/reference/decoratorOnClass2.js
@@ -15,7 +15,7 @@ var __decorate = (this && this.__decorate) || function (decorators, target, key,
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.C = void 0;
-var C = /** @class */ (function () {
+var C = exports.C = /** @class */ (function () {
     function C() {
     }
     C = __decorate([
@@ -23,4 +23,3 @@ var C = /** @class */ (function () {
     ], C);
     return C;
 }());
-exports.C = C;
diff --git a/tests/baselines/reference/decoratorOnClass3.errors.txt b/tests/baselines/reference/decoratorOnClass3.errors.txt
deleted file mode 100644
index dfa430dec0cd7..0000000000000
--- a/tests/baselines/reference/decoratorOnClass3.errors.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-tests/cases/conformance/decorators/class/decoratorOnClass3.ts(3,1): error TS1128: Declaration or statement expected.
-
-
-==== tests/cases/conformance/decorators/class/decoratorOnClass3.ts (1 errors) ====
-    declare function dec<T>(target: T): T;
-    
-    export
-    ~~~~~~
-!!! error TS1128: Declaration or statement expected.
-    @dec
-    class C {
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnClass3.js b/tests/baselines/reference/decoratorOnClass3.js
index fc3255359c4ab..5edb1c7cfa4ad 100644
--- a/tests/baselines/reference/decoratorOnClass3.js
+++ b/tests/baselines/reference/decoratorOnClass3.js
@@ -7,13 +7,16 @@ class C {
 }
 
 //// [decoratorOnClass3.js]
+"use strict";
 var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
     var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
     if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
     else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
     return c > 3 && r && Object.defineProperty(target, key, r), r;
 };
-var C = /** @class */ (function () {
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.C = void 0;
+var C = exports.C = /** @class */ (function () {
     function C() {
     }
     C = __decorate([
diff --git a/tests/baselines/reference/decoratorOnClass3.symbols b/tests/baselines/reference/decoratorOnClass3.symbols
index 1a3ccaff8c6e6..35dbec88dc7ea 100644
--- a/tests/baselines/reference/decoratorOnClass3.symbols
+++ b/tests/baselines/reference/decoratorOnClass3.symbols
@@ -11,5 +11,5 @@ export
 >dec : Symbol(dec, Decl(decoratorOnClass3.ts, 0, 0))
 
 class C {
->C : Symbol(C, Decl(decoratorOnClass3.ts, 2, 6))
+>C : Symbol(C, Decl(decoratorOnClass3.ts, 0, 38))
 }
diff --git a/tests/baselines/reference/decoratorOnClass8.errors.txt b/tests/baselines/reference/decoratorOnClass8.errors.txt
index 4c13520364bd6..eaad1aa7e8212 100644
--- a/tests/baselines/reference/decoratorOnClass8.errors.txt
+++ b/tests/baselines/reference/decoratorOnClass8.errors.txt
@@ -1,4 +1,5 @@
 tests/cases/conformance/decorators/class/decoratorOnClass8.ts(3,1): error TS1238: Unable to resolve signature of class decorator when called as an expression.
+  The runtime will invoke the decorator with 1 arguments, but the decorator expects 2.
 
 
 ==== tests/cases/conformance/decorators/class/decoratorOnClass8.ts (1 errors) ====
@@ -7,5 +8,7 @@ tests/cases/conformance/decorators/class/decoratorOnClass8.ts(3,1): error TS1238
     @dec()
     ~~~~~~
 !!! error TS1238: Unable to resolve signature of class decorator when called as an expression.
+!!! error TS1238:   The runtime will invoke the decorator with 1 arguments, but the decorator expects 2.
+!!! related TS6210 tests/cases/conformance/decorators/class/decoratorOnClass8.ts:1:44: An argument for 'paramIndex' was not provided.
     class C {
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnClass8.es6.js b/tests/baselines/reference/decoratorOnClass8.es6.js
index 88dd41e7b6065..7e8761f4052cb 100644
--- a/tests/baselines/reference/decoratorOnClass8.es6.js
+++ b/tests/baselines/reference/decoratorOnClass8.es6.js
@@ -13,8 +13,13 @@ var __decorate = (this && this.__decorate) || function (decorators, target, key,
     else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
     return c > 3 && r && Object.defineProperty(target, key, r), r;
 };
-let default_1 = class default_1 {
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
 };
+let default_1 = class {
+};
+__setFunctionName(default_1, "default");
 default_1.y = 1;
 default_1 = __decorate([
     dec
diff --git a/tests/baselines/reference/decoratorOnClassConstructor2.js b/tests/baselines/reference/decoratorOnClassConstructor2.js
index 23dbbf69036da..dff6101a9edf0 100644
--- a/tests/baselines/reference/decoratorOnClassConstructor2.js
+++ b/tests/baselines/reference/decoratorOnClassConstructor2.js
@@ -55,7 +55,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 exports.C = void 0;
 var _0_ts_1 = require("./0.ts");
 var _0_ts_2 = require("./0.ts");
-var C = /** @class */ (function (_super) {
+var C = exports.C = /** @class */ (function (_super) {
     __extends(C, _super);
     function C(prop) {
         return _super.call(this) || this;
@@ -65,4 +65,3 @@ var C = /** @class */ (function (_super) {
     ], C);
     return C;
 }(_0_ts_1.base));
-exports.C = C;
diff --git a/tests/baselines/reference/decoratorOnClassConstructor3.js b/tests/baselines/reference/decoratorOnClassConstructor3.js
index ff584adb5f043..c81f6d873558d 100644
--- a/tests/baselines/reference/decoratorOnClassConstructor3.js
+++ b/tests/baselines/reference/decoratorOnClassConstructor3.js
@@ -58,7 +58,7 @@ exports.C = void 0;
 var _0_1 = require("./0");
 var _0_2 = require("./0");
 /* Comment on the Class Declaration */
-var C = /** @class */ (function (_super) {
+var C = exports.C = /** @class */ (function (_super) {
     __extends(C, _super);
     function C(prop) {
         return _super.call(this) || this;
@@ -68,4 +68,3 @@ var C = /** @class */ (function (_super) {
     ], C);
     return C;
 }(_0_1.base));
-exports.C = C;
diff --git a/tests/baselines/reference/decoratorOnClassMethod10.errors.txt b/tests/baselines/reference/decoratorOnClassMethod10.errors.txt
index 49c45b4a6f9fc..50e6e832afc5b 100644
--- a/tests/baselines/reference/decoratorOnClassMethod10.errors.txt
+++ b/tests/baselines/reference/decoratorOnClassMethod10.errors.txt
@@ -1,5 +1,6 @@
-tests/cases/conformance/decorators/class/method/decoratorOnClassMethod10.ts(4,6): error TS2345: Argument of type 'C' is not assignable to parameter of type 'Function'.
-  Type 'C' is missing the following properties from type 'Function': apply, call, bind, prototype, and 3 more.
+tests/cases/conformance/decorators/class/method/decoratorOnClassMethod10.ts(4,6): error TS1241: Unable to resolve signature of method decorator when called as an expression.
+  Argument of type 'C' is not assignable to parameter of type 'Function'.
+    Type 'C' is missing the following properties from type 'Function': apply, call, bind, prototype, and 3 more.
 
 
 ==== tests/cases/conformance/decorators/class/method/decoratorOnClassMethod10.ts (1 errors) ====
@@ -8,6 +9,7 @@ tests/cases/conformance/decorators/class/method/decoratorOnClassMethod10.ts(4,6)
     class C {
         @dec method() {}
          ~~~
-!!! error TS2345: Argument of type 'C' is not assignable to parameter of type 'Function'.
-!!! error TS2345:   Type 'C' is missing the following properties from type 'Function': apply, call, bind, prototype, and 3 more.
+!!! error TS1241: Unable to resolve signature of method decorator when called as an expression.
+!!! error TS1241:   Argument of type 'C' is not assignable to parameter of type 'Function'.
+!!! error TS1241:     Type 'C' is missing the following properties from type 'Function': apply, call, bind, prototype, and 3 more.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnClassMethod8.errors.txt b/tests/baselines/reference/decoratorOnClassMethod8.errors.txt
index ab20c94e5bd8f..4aafd73e4b763 100644
--- a/tests/baselines/reference/decoratorOnClassMethod8.errors.txt
+++ b/tests/baselines/reference/decoratorOnClassMethod8.errors.txt
@@ -1,5 +1,6 @@
-tests/cases/conformance/decorators/class/method/decoratorOnClassMethod8.ts(4,5): error TS1241: Unable to resolve signature of method decorator when called as an expression.
-tests/cases/conformance/decorators/class/method/decoratorOnClassMethod8.ts(4,5): error TS1270: Decorator function return type 'C' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
+tests/cases/conformance/decorators/class/method/decoratorOnClassMethod8.ts(4,6): error TS1241: Unable to resolve signature of method decorator when called as an expression.
+  The runtime will invoke the decorator with 3 arguments, but the decorator expects 1.
+tests/cases/conformance/decorators/class/method/decoratorOnClassMethod8.ts(4,6): error TS1270: Decorator function return type 'C' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
 
 
 ==== tests/cases/conformance/decorators/class/method/decoratorOnClassMethod8.ts (2 errors) ====
@@ -7,8 +8,9 @@ tests/cases/conformance/decorators/class/method/decoratorOnClassMethod8.ts(4,5):
     
     class C {
         @dec method() {}
-        ~~~~
+         ~~~
 !!! error TS1241: Unable to resolve signature of method decorator when called as an expression.
-        ~~~~
+!!! error TS1241:   The runtime will invoke the decorator with 3 arguments, but the decorator expects 1.
+         ~~~
 !!! error TS1270: Decorator function return type 'C' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnClassMethodThisParameter.errors.txt b/tests/baselines/reference/decoratorOnClassMethodThisParameter.errors.txt
index 02fb67534e881..e2f014e1096a4 100644
--- a/tests/baselines/reference/decoratorOnClassMethodThisParameter.errors.txt
+++ b/tests/baselines/reference/decoratorOnClassMethodThisParameter.errors.txt
@@ -1,5 +1,5 @@
-tests/cases/conformance/decorators/class/method/parameter/decoratorOnClassMethodThisParameter.ts(4,12): error TS1433: Decorators may not be applied to 'this' parameters.
-tests/cases/conformance/decorators/class/method/parameter/decoratorOnClassMethodThisParameter.ts(8,29): error TS1433: Decorators may not be applied to 'this' parameters.
+tests/cases/conformance/decorators/class/method/parameter/decoratorOnClassMethodThisParameter.ts(4,12): error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
+tests/cases/conformance/decorators/class/method/parameter/decoratorOnClassMethodThisParameter.ts(8,29): error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
 tests/cases/conformance/decorators/class/method/parameter/decoratorOnClassMethodThisParameter.ts(8,30): error TS2680: A 'this' parameter must be the first parameter.
 
 
@@ -9,13 +9,13 @@ tests/cases/conformance/decorators/class/method/parameter/decoratorOnClassMethod
     class C {
         method(@dec this: C) {}
                ~~~~
-!!! error TS1433: Decorators may not be applied to 'this' parameters.
+!!! error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
     }
     
     class C2 {
         method(@dec allowed: C2, @dec this: C2) {}
                                 ~~~~~
-!!! error TS1433: Decorators may not be applied to 'this' parameters.
+!!! error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
                                  ~~~~~~~~~~~~~
 !!! error TS2680: A 'this' parameter must be the first parameter.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnClassMethodThisParameter.js b/tests/baselines/reference/decoratorOnClassMethodThisParameter.js
index 0938ccbc4438b..d7a4ed9bf481b 100644
--- a/tests/baselines/reference/decoratorOnClassMethodThisParameter.js
+++ b/tests/baselines/reference/decoratorOnClassMethodThisParameter.js
@@ -30,8 +30,7 @@ var C2 = /** @class */ (function () {
     }
     C2.prototype.method = function (allowed) { };
     __decorate([
-        __param(0, dec),
-        __param(1, dec)
+        __param(0, dec)
     ], C2.prototype, "method", null);
     return C2;
 }());
diff --git a/tests/baselines/reference/decoratorOnClassProperty6.errors.txt b/tests/baselines/reference/decoratorOnClassProperty6.errors.txt
index b40a81fe1c948..3beaa87ae2cd5 100644
--- a/tests/baselines/reference/decoratorOnClassProperty6.errors.txt
+++ b/tests/baselines/reference/decoratorOnClassProperty6.errors.txt
@@ -1,4 +1,5 @@
-tests/cases/conformance/decorators/class/property/decoratorOnClassProperty6.ts(4,5): error TS1240: Unable to resolve signature of property decorator when called as an expression.
+tests/cases/conformance/decorators/class/property/decoratorOnClassProperty6.ts(4,6): error TS1240: Unable to resolve signature of property decorator when called as an expression.
+  The runtime will invoke the decorator with 2 arguments, but the decorator expects 1.
 
 
 ==== tests/cases/conformance/decorators/class/property/decoratorOnClassProperty6.ts (1 errors) ====
@@ -6,6 +7,7 @@ tests/cases/conformance/decorators/class/property/decoratorOnClassProperty6.ts(4
     
     class C {
         @dec prop;
-        ~~~~
+         ~~~
 !!! error TS1240: Unable to resolve signature of property decorator when called as an expression.
+!!! error TS1240:   The runtime will invoke the decorator with 2 arguments, but the decorator expects 1.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnClassProperty7.errors.txt b/tests/baselines/reference/decoratorOnClassProperty7.errors.txt
index 47f8ad5ae8c18..15707417eef33 100644
--- a/tests/baselines/reference/decoratorOnClassProperty7.errors.txt
+++ b/tests/baselines/reference/decoratorOnClassProperty7.errors.txt
@@ -1,4 +1,5 @@
 tests/cases/conformance/decorators/class/property/decoratorOnClassProperty7.ts(4,5): error TS1240: Unable to resolve signature of property decorator when called as an expression.
+  The runtime will invoke the decorator with 2 arguments, but the decorator expects 3.
 
 
 ==== tests/cases/conformance/decorators/class/property/decoratorOnClassProperty7.ts (1 errors) ====
@@ -8,4 +9,6 @@ tests/cases/conformance/decorators/class/property/decoratorOnClassProperty7.ts(4
         @dec prop;
         ~~~~
 !!! error TS1240: Unable to resolve signature of property decorator when called as an expression.
+!!! error TS1240:   The runtime will invoke the decorator with 2 arguments, but the decorator expects 3.
+!!! related TS6210 tests/cases/conformance/decorators/class/property/decoratorOnClassProperty7.ts:1:70: An argument for 'paramIndex' was not provided.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnFunctionExpression.errors.txt b/tests/baselines/reference/decoratorOnFunctionExpression.errors.txt
index 71aae3e13eb23..e705d8e4d071c 100644
--- a/tests/baselines/reference/decoratorOnFunctionExpression.errors.txt
+++ b/tests/baselines/reference/decoratorOnFunctionExpression.errors.txt
@@ -1,13 +1,16 @@
-tests/cases/conformance/decorators/invalid/decoratorOnFunctionExpression.ts(3,9): error TS1109: Expression expected.
+tests/cases/conformance/decorators/invalid/decoratorOnFunctionExpression.ts(3,13): error TS1109: Expression expected.
+tests/cases/conformance/decorators/invalid/decoratorOnFunctionExpression.ts(3,14): error TS1005: ',' expected.
 tests/cases/conformance/decorators/invalid/decoratorOnFunctionExpression.ts(3,23): error TS1003: Identifier expected.
 
 
-==== tests/cases/conformance/decorators/invalid/decoratorOnFunctionExpression.ts (2 errors) ====
+==== tests/cases/conformance/decorators/invalid/decoratorOnFunctionExpression.ts (3 errors) ====
     declare function dec<T>(target: T): T;
     
     var F = @dec function () {
-            ~
+                
 !!! error TS1109: Expression expected.
+                 ~~~~~~~~
+!!! error TS1005: ',' expected.
                           ~
 !!! error TS1003: Identifier expected.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/decoratorOnFunctionExpression.symbols b/tests/baselines/reference/decoratorOnFunctionExpression.symbols
index 43880c9d4ca0c..f1abe4f828bbe 100644
--- a/tests/baselines/reference/decoratorOnFunctionExpression.symbols
+++ b/tests/baselines/reference/decoratorOnFunctionExpression.symbols
@@ -9,5 +9,5 @@ declare function dec<T>(target: T): T;
 var F = @dec function () {
 >F : Symbol(F, Decl(decoratorOnFunctionExpression.ts, 2, 3))
 >dec : Symbol(dec, Decl(decoratorOnFunctionExpression.ts, 0, 0))
-> : Symbol((Missing), Decl(decoratorOnFunctionExpression.ts, 2, 7))
+> : Symbol((Missing), Decl(decoratorOnFunctionExpression.ts, 2, 12))
 }
diff --git a/tests/baselines/reference/decoratorOnFunctionExpression.types b/tests/baselines/reference/decoratorOnFunctionExpression.types
index bd92cb4a1d69b..1009df12d89c0 100644
--- a/tests/baselines/reference/decoratorOnFunctionExpression.types
+++ b/tests/baselines/reference/decoratorOnFunctionExpression.types
@@ -5,7 +5,6 @@ declare function dec<T>(target: T): T;
 
 var F = @dec function () {
 >F : any
-> : any
 >dec : <T>(target: T) => T
 > : () => void
 }
diff --git a/tests/baselines/reference/decoratorOnFunctionParameter.errors.txt b/tests/baselines/reference/decoratorOnFunctionParameter.errors.txt
index a2259e0666a12..fd842a094dc44 100644
--- a/tests/baselines/reference/decoratorOnFunctionParameter.errors.txt
+++ b/tests/baselines/reference/decoratorOnFunctionParameter.errors.txt
@@ -1,5 +1,5 @@
-tests/cases/conformance/decorators/invalid/decoratorOnFunctionParameter.ts(5,17): error TS1433: Decorators may not be applied to 'this' parameters.
-tests/cases/conformance/decorators/invalid/decoratorOnFunctionParameter.ts(6,17): error TS1433: Decorators may not be applied to 'this' parameters.
+tests/cases/conformance/decorators/invalid/decoratorOnFunctionParameter.ts(5,17): error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
+tests/cases/conformance/decorators/invalid/decoratorOnFunctionParameter.ts(6,17): error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
 
 
 ==== tests/cases/conformance/decorators/invalid/decoratorOnFunctionParameter.ts (2 errors) ====
@@ -9,7 +9,7 @@ tests/cases/conformance/decorators/invalid/decoratorOnFunctionParameter.ts(6,17)
     
     function direct(@dec this: C) { return this.n; }
                     ~~~~
-!!! error TS1433: Decorators may not be applied to 'this' parameters.
+!!! error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
     function called(@dec() this: C) { return this.n; }
                     ~~~~~~
-!!! error TS1433: Decorators may not be applied to 'this' parameters.
\ No newline at end of file
+!!! error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
\ No newline at end of file
diff --git a/tests/baselines/reference/destructureOptionalParameter.symbols b/tests/baselines/reference/destructureOptionalParameter.symbols
index e763a2097a9f2..af85a8bb47eb5 100644
--- a/tests/baselines/reference/destructureOptionalParameter.symbols
+++ b/tests/baselines/reference/destructureOptionalParameter.symbols
@@ -48,7 +48,7 @@ interface QueryMetadataFactory {
 >read : Symbol(read, Decl(destructureOptionalParameter.ts, 14, 30))
 
     }): ParameterDecorator;
->ParameterDecorator : Symbol(ParameterDecorator, Decl(lib.es5.d.ts, --, --))
+>ParameterDecorator : Symbol(ParameterDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
     new (selector: Type | string, {descendants, read}?: {
 >selector : Symbol(selector, Decl(destructureOptionalParameter.ts, 17, 9))
diff --git a/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt b/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt
index c8f9fd6b305e7..d6c101ccd028f 100644
--- a/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt
+++ b/tests/baselines/reference/destructuringParameterDeclaration4.errors.txt
@@ -41,7 +41,7 @@ tests/cases/conformance/es6/destructuring/destructuringParameterDeclaration4.ts(
     a1(...array2);            // Error parameter type is (number|string)[]
           ~~~~~~
 !!! error TS2552: Cannot find name 'array2'. Did you mean 'Array'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1495:13: 'Array' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1498:13: 'Array' is declared here.
     a5([1, 2, "string", false, true]);       // Error, parameter type is [any, any, [[any]]]
               ~~~~~~~~
 !!! error TS2322: Type 'string' is not assignable to type '[[any]]'.
diff --git a/tests/baselines/reference/destructuringTuple.errors.txt b/tests/baselines/reference/destructuringTuple.errors.txt
index 20d9a290c04c9..b0fa1bd259fe2 100644
--- a/tests/baselines/reference/destructuringTuple.errors.txt
+++ b/tests/baselines/reference/destructuringTuple.errors.txt
@@ -33,8 +33,8 @@ tests/cases/compiler/destructuringTuple.ts(11,60): error TS2769: No overload mat
 !!! error TS2769:   Overload 2 of 3, '(callbackfn: (previousValue: [], currentValue: number, currentIndex: number, array: number[]) => [], initialValue: []): []', gave the following error.
 !!! error TS2769:     Type 'never[]' is not assignable to type '[]'.
 !!! error TS2769:       Target allows only 0 element(s) but source may have more.
-!!! related TS6502 /.ts/lib.es5.d.ts:1460:24: The expected type comes from the return type of this signature.
-!!! related TS6502 /.ts/lib.es5.d.ts:1466:27: The expected type comes from the return type of this signature.
+!!! related TS6502 /.ts/lib.es5.d.ts:1463:24: The expected type comes from the return type of this signature.
+!!! related TS6502 /.ts/lib.es5.d.ts:1469:27: The expected type comes from the return type of this signature.
                                                                ~~
 !!! error TS2769: No overload matches this call.
 !!! error TS2769:   Overload 1 of 2, '(...items: ConcatArray<never>[]): never[]', gave the following error.
diff --git a/tests/baselines/reference/duplicateNumericIndexers.errors.txt b/tests/baselines/reference/duplicateNumericIndexers.errors.txt
index c34d35766c139..826a48d1c815b 100644
--- a/tests/baselines/reference/duplicateNumericIndexers.errors.txt
+++ b/tests/baselines/reference/duplicateNumericIndexers.errors.txt
@@ -10,8 +10,8 @@ tests/cases/conformance/types/members/duplicateNumericIndexers.ts(24,5): error T
 tests/cases/conformance/types/members/duplicateNumericIndexers.ts(25,5): error TS2374: Duplicate index signature for type 'number'.
 tests/cases/conformance/types/members/duplicateNumericIndexers.ts(29,5): error TS2374: Duplicate index signature for type 'number'.
 tests/cases/conformance/types/members/duplicateNumericIndexers.ts(30,5): error TS2374: Duplicate index signature for type 'number'.
-lib.es5.d.ts(517,5): error TS2374: Duplicate index signature for type 'number'.
-lib.es5.d.ts(1481,5): error TS2374: Duplicate index signature for type 'number'.
+lib.es5.d.ts(520,5): error TS2374: Duplicate index signature for type 'number'.
+lib.es5.d.ts(1484,5): error TS2374: Duplicate index signature for type 'number'.
 
 
 ==== tests/cases/conformance/types/members/duplicateNumericIndexers.ts (12 errors) ====
diff --git a/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js b/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js
index 9c84249d36e53..ee447f2a4bde7 100644
--- a/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js
+++ b/tests/baselines/reference/emitClassExpressionInDeclarationFile2.js
@@ -46,6 +46,10 @@ var __extends = (this && this.__extends) || (function () {
         d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
     };
 })();
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 var _a;
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.Test = exports.WithTags = exports.FooItem = exports.noPrivates = void 0;
@@ -57,6 +61,7 @@ exports.noPrivates = (_a = /** @class */ (function () {
         class_1.prototype.tags = function () { };
         return class_1;
     }()),
+    __setFunctionName(_a, "noPrivates"),
     _a.ps = -1,
     _a);
 // altered repro from #15066 to add private property
diff --git a/tests/baselines/reference/emitDecoratorMetadata_object.symbols b/tests/baselines/reference/emitDecoratorMetadata_object.symbols
index fd9ff12a2c672..cd08fdd0071af 100644
--- a/tests/baselines/reference/emitDecoratorMetadata_object.symbols
+++ b/tests/baselines/reference/emitDecoratorMetadata_object.symbols
@@ -1,11 +1,11 @@
 === tests/cases/compiler/emitDecoratorMetadata_object.ts ===
 declare const MyClassDecorator: ClassDecorator;
 >MyClassDecorator : Symbol(MyClassDecorator, Decl(emitDecoratorMetadata_object.ts, 0, 13))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 declare const MyMethodDecorator: MethodDecorator;
 >MyMethodDecorator : Symbol(MyMethodDecorator, Decl(emitDecoratorMetadata_object.ts, 1, 13))
->MethodDecorator : Symbol(MethodDecorator, Decl(lib.es5.d.ts, --, --))
+>MethodDecorator : Symbol(MethodDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @MyClassDecorator
 >MyClassDecorator : Symbol(MyClassDecorator, Decl(emitDecoratorMetadata_object.ts, 0, 13))
diff --git a/tests/baselines/reference/emitDecoratorMetadata_restArgs.symbols b/tests/baselines/reference/emitDecoratorMetadata_restArgs.symbols
index 8a36fd89d358b..53cfde04dbc82 100644
--- a/tests/baselines/reference/emitDecoratorMetadata_restArgs.symbols
+++ b/tests/baselines/reference/emitDecoratorMetadata_restArgs.symbols
@@ -1,11 +1,11 @@
 === tests/cases/compiler/emitDecoratorMetadata_restArgs.ts ===
 declare const MyClassDecorator: ClassDecorator;
 >MyClassDecorator : Symbol(MyClassDecorator, Decl(emitDecoratorMetadata_restArgs.ts, 0, 13))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 declare const MyMethodDecorator: MethodDecorator;
 >MyMethodDecorator : Symbol(MyMethodDecorator, Decl(emitDecoratorMetadata_restArgs.ts, 1, 13))
->MethodDecorator : Symbol(MethodDecorator, Decl(lib.es5.d.ts, --, --))
+>MethodDecorator : Symbol(MethodDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
 @MyClassDecorator
 >MyClassDecorator : Symbol(MyClassDecorator, Decl(emitDecoratorMetadata_restArgs.ts, 0, 13))
diff --git a/tests/baselines/reference/errorMessageOnObjectLiteralType.errors.txt b/tests/baselines/reference/errorMessageOnObjectLiteralType.errors.txt
index 8a5c1b069c593..cc8824851bc41 100644
--- a/tests/baselines/reference/errorMessageOnObjectLiteralType.errors.txt
+++ b/tests/baselines/reference/errorMessageOnObjectLiteralType.errors.txt
@@ -13,4 +13,4 @@ tests/cases/compiler/errorMessageOnObjectLiteralType.ts(6,8): error TS2551: Prop
     Object.getOwnPropertyNamess(null);
            ~~~~~~~~~~~~~~~~~~~~
 !!! error TS2551: Property 'getOwnPropertyNamess' does not exist on type 'ObjectConstructor'. Did you mean 'getOwnPropertyNames'?
-!!! related TS2728 /.ts/lib.es5.d.ts:181:5: 'getOwnPropertyNames' is declared here.
\ No newline at end of file
+!!! related TS2728 /.ts/lib.es5.d.ts:184:5: 'getOwnPropertyNames' is declared here.
\ No newline at end of file
diff --git a/tests/baselines/reference/es3defaultAliasIsQuoted.js b/tests/baselines/reference/es3defaultAliasIsQuoted.js
index a486ad614046b..c8ae85c5bdf7f 100644
--- a/tests/baselines/reference/es3defaultAliasIsQuoted.js
+++ b/tests/baselines/reference/es3defaultAliasIsQuoted.js
@@ -17,13 +17,12 @@ assert(Foo.CONSTANT === "Foo");
 "use strict";
 exports.__esModule = true;
 exports.Foo = void 0;
-var Foo = /** @class */ (function () {
+var Foo = exports.Foo = /** @class */ (function () {
     function Foo() {
     }
     Foo.CONSTANT = "Foo";
     return Foo;
 }());
-exports.Foo = Foo;
 function assert(value) {
     if (!value)
         throw new Error("Assertion failed!");
diff --git a/tests/baselines/reference/es6ModuleClassDeclaration.js b/tests/baselines/reference/es6ModuleClassDeclaration.js
index a228739abbfb7..1a793a3ec113e 100644
--- a/tests/baselines/reference/es6ModuleClassDeclaration.js
+++ b/tests/baselines/reference/es6ModuleClassDeclaration.js
@@ -113,7 +113,7 @@ module m2 {
 }
 
 //// [es6ModuleClassDeclaration.js]
-export class c {
+class c {
     constructor() {
         this.x = 10;
         this.y = 30;
@@ -129,6 +129,7 @@ export class c {
 }
 c.k = 20;
 c.l = 30;
+export { c };
 class c2 {
     constructor() {
         this.x = 10;
diff --git a/tests/baselines/reference/es6modulekindWithES5Target.js b/tests/baselines/reference/es6modulekindWithES5Target.js
index 3689bb9027f75..ee7248f0093be 100644
--- a/tests/baselines/reference/es6modulekindWithES5Target.js
+++ b/tests/baselines/reference/es6modulekindWithES5Target.js
@@ -26,7 +26,7 @@ var __decorate = (this && this.__decorate) || function (decorators, target, key,
     else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
     return c > 3 && r && Object.defineProperty(target, key, r), r;
 };
-var C = /** @class */ (function () {
+export var C = /** @class */ (function () {
     function C() {
         this.p = 1;
     }
@@ -34,9 +34,8 @@ var C = /** @class */ (function () {
     C.s = 0;
     return C;
 }());
-export { C };
 export { C as C2 };
-var D = /** @class */ (function () {
+export var D = /** @class */ (function () {
     function D() {
         this.p = 1;
     }
@@ -47,7 +46,6 @@ var D = /** @class */ (function () {
     ], D);
     return D;
 }());
-export { D };
 export { D as D2 };
 var E = /** @class */ (function () {
     function E() {
diff --git a/tests/baselines/reference/esDecorators-arguments.errors.txt b/tests/baselines/reference/esDecorators-arguments.errors.txt
new file mode 100644
index 0000000000000..d686fdee1b8d9
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-arguments.errors.txt
@@ -0,0 +1,32 @@
+tests/cases/conformance/esDecorators/esDecorators-arguments.ts(1,2): error TS1238: Unable to resolve signature of class decorator when called as an expression.
+  The runtime will invoke the decorator with 2 arguments, but the decorator expects 0.
+tests/cases/conformance/esDecorators/esDecorators-arguments.ts(2,2): error TS1238: Unable to resolve signature of class decorator when called as an expression.
+  The runtime will invoke the decorator with 2 arguments, but the decorator expects 1.
+tests/cases/conformance/esDecorators/esDecorators-arguments.ts(4,1): error TS1238: Unable to resolve signature of class decorator when called as an expression.
+  The runtime will invoke the decorator with 2 arguments, but the decorator expects 3.
+tests/cases/conformance/esDecorators/esDecorators-arguments.ts(5,1): error TS1238: Unable to resolve signature of class decorator when called as an expression.
+  The runtime will invoke the decorator with 2 arguments, but the decorator expects at least 3.
+
+
+==== tests/cases/conformance/esDecorators/esDecorators-arguments.ts (4 errors) ====
+    @(() => {})
+     ~~~~~~~~~~
+!!! error TS1238: Unable to resolve signature of class decorator when called as an expression.
+!!! error TS1238:   The runtime will invoke the decorator with 2 arguments, but the decorator expects 0.
+    @((a: any) => {})
+     ~~~~~~~~~~~~~~~~
+!!! error TS1238: Unable to resolve signature of class decorator when called as an expression.
+!!! error TS1238:   The runtime will invoke the decorator with 2 arguments, but the decorator expects 1.
+    @((a: any, b: any) => {})
+    @((a: any, b: any, c: any) => {})
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1238: Unable to resolve signature of class decorator when called as an expression.
+!!! error TS1238:   The runtime will invoke the decorator with 2 arguments, but the decorator expects 3.
+!!! related TS6210 tests/cases/conformance/esDecorators/esDecorators-arguments.ts:4:20: An argument for 'c' was not provided.
+    @((a: any, b: any, c: any, ...d: any[]) => {})
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1238: Unable to resolve signature of class decorator when called as an expression.
+!!! error TS1238:   The runtime will invoke the decorator with 2 arguments, but the decorator expects at least 3.
+!!! related TS6210 tests/cases/conformance/esDecorators/esDecorators-arguments.ts:5:20: An argument for 'c' was not provided.
+    class C1 {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-arguments.js b/tests/baselines/reference/esDecorators-arguments.js
new file mode 100644
index 0000000000000..2ad23d5653bcb
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-arguments.js
@@ -0,0 +1,17 @@
+//// [esDecorators-arguments.ts]
+@(() => {})
+@((a: any) => {})
+@((a: any, b: any) => {})
+@((a: any, b: any, c: any) => {})
+@((a: any, b: any, c: any, ...d: any[]) => {})
+class C1 {}
+
+
+//// [esDecorators-arguments.js]
+@(() => { })
+@((a) => { })
+@((a, b) => { })
+@((a, b, c) => { })
+@((a, b, c, ...d) => { })
+class C1 {
+}
diff --git a/tests/baselines/reference/esDecorators-arguments.symbols b/tests/baselines/reference/esDecorators-arguments.symbols
new file mode 100644
index 0000000000000..7afcf3345bd75
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-arguments.symbols
@@ -0,0 +1,23 @@
+=== tests/cases/conformance/esDecorators/esDecorators-arguments.ts ===
+@(() => {})
+@((a: any) => {})
+>a : Symbol(a, Decl(esDecorators-arguments.ts, 1, 3))
+
+@((a: any, b: any) => {})
+>a : Symbol(a, Decl(esDecorators-arguments.ts, 2, 3))
+>b : Symbol(b, Decl(esDecorators-arguments.ts, 2, 10))
+
+@((a: any, b: any, c: any) => {})
+>a : Symbol(a, Decl(esDecorators-arguments.ts, 3, 3))
+>b : Symbol(b, Decl(esDecorators-arguments.ts, 3, 10))
+>c : Symbol(c, Decl(esDecorators-arguments.ts, 3, 18))
+
+@((a: any, b: any, c: any, ...d: any[]) => {})
+>a : Symbol(a, Decl(esDecorators-arguments.ts, 4, 3))
+>b : Symbol(b, Decl(esDecorators-arguments.ts, 4, 10))
+>c : Symbol(c, Decl(esDecorators-arguments.ts, 4, 18))
+>d : Symbol(d, Decl(esDecorators-arguments.ts, 4, 26))
+
+class C1 {}
+>C1 : Symbol(C1, Decl(esDecorators-arguments.ts, 0, 0))
+
diff --git a/tests/baselines/reference/esDecorators-arguments.types b/tests/baselines/reference/esDecorators-arguments.types
new file mode 100644
index 0000000000000..e46e766b84300
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-arguments.types
@@ -0,0 +1,34 @@
+=== tests/cases/conformance/esDecorators/esDecorators-arguments.ts ===
+@(() => {})
+>(() => {}) : () => void
+>() => {} : () => void
+
+@((a: any) => {})
+>((a: any) => {}) : (a: any) => void
+>(a: any) => {} : (a: any) => void
+>a : any
+
+@((a: any, b: any) => {})
+>((a: any, b: any) => {}) : (a: any, b: any) => void
+>(a: any, b: any) => {} : (a: any, b: any) => void
+>a : any
+>b : any
+
+@((a: any, b: any, c: any) => {})
+>((a: any, b: any, c: any) => {}) : (a: any, b: any, c: any) => void
+>(a: any, b: any, c: any) => {} : (a: any, b: any, c: any) => void
+>a : any
+>b : any
+>c : any
+
+@((a: any, b: any, c: any, ...d: any[]) => {})
+>((a: any, b: any, c: any, ...d: any[]) => {}) : (a: any, b: any, c: any, ...d: any[]) => void
+>(a: any, b: any, c: any, ...d: any[]) => {} : (a: any, b: any, c: any, ...d: any[]) => void
+>a : any
+>b : any
+>c : any
+>d : any[]
+
+class C1 {}
+>C1 : C1
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es2015).js
new file mode 100644
index 0000000000000..5e9c2758d53b1
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es2015).js
@@ -0,0 +1,48 @@
+//// [esDecorators-classDeclaration-accessors-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) get method1() { return 0; }
+    @dec(12) set method1(value) {}
+    @dec(21) get ["method2"]() { return 0; }
+    @dec(22) set ["method2"](value) {}
+    @dec(31) get [method3]() { return 0; }
+    @dec(32) set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStatic.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    var _b, _c;
+    let _instanceExtraInitializers = [];
+    let _get_method1_decorators;
+    let _set_method1_decorators;
+    let _get_member_decorators;
+    let _set_member_decorators;
+    let _get_member_decorators_1;
+    let _set_member_decorators_1;
+    return _a = class C {
+            get method1() { return 0; }
+            set method1(value) { }
+            get ["method2"]() { return 0; }
+            set ["method2"](value) { }
+            get [(_get_method1_decorators = [dec(11)], _set_method1_decorators = [dec(12)], _get_member_decorators = [dec(21)], _set_member_decorators = [dec(22)], _get_member_decorators_1 = [dec(31)], _b = __propKey(method3))]() { return 0; }
+            set [(_set_member_decorators_1 = [dec(32)], _c = __propKey(method3))](value) { }
+            constructor() {
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+        },
+        (() => {
+            __esDecorate(_a, null, _get_method1_decorators, { kind: "getter", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _set_method1_decorators, { kind: "setter", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _get_member_decorators, { kind: "getter", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _set_member_decorators, { kind: "setter", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _get_member_decorators_1, { kind: "getter", name: _b, static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _set_member_decorators_1, { kind: "setter", name: _c, static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es2022).js
new file mode 100644
index 0000000000000..9315c3dde5fa7
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es2022).js
@@ -0,0 +1,46 @@
+//// [esDecorators-classDeclaration-accessors-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) get method1() { return 0; }
+    @dec(12) set method1(value) {}
+    @dec(21) get ["method2"]() { return 0; }
+    @dec(22) set ["method2"](value) {}
+    @dec(31) get [method3]() { return 0; }
+    @dec(32) set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStatic.js]
+const method3 = "method3";
+let C = (() => {
+    var _a, _b;
+    let _instanceExtraInitializers = [];
+    let _get_method1_decorators;
+    let _set_method1_decorators;
+    let _get_member_decorators;
+    let _set_member_decorators;
+    let _get_member_decorators_1;
+    let _set_member_decorators_1;
+    return class C {
+        static {
+            __esDecorate(this, null, _get_method1_decorators, { kind: "getter", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _set_method1_decorators, { kind: "setter", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _get_member_decorators, { kind: "getter", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _set_member_decorators, { kind: "setter", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _get_member_decorators_1, { kind: "getter", name: _a, static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _set_member_decorators_1, { kind: "setter", name: _b, static: false, private: false }, null, _instanceExtraInitializers);
+        }
+        get method1() { return 0; }
+        set method1(value) { }
+        get ["method2"]() { return 0; }
+        set ["method2"](value) { }
+        get [(_get_method1_decorators = [dec(11)], _set_method1_decorators = [dec(12)], _get_member_decorators = [dec(21)], _set_member_decorators = [dec(22)], _get_member_decorators_1 = [dec(31)], _a = __propKey(method3))]() { return 0; }
+        set [(_set_member_decorators_1 = [dec(32)], _b = __propKey(method3))](value) { }
+        constructor() {
+            __runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es5).js
new file mode 100644
index 0000000000000..129044549e3b8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=es5).js
@@ -0,0 +1,66 @@
+//// [esDecorators-classDeclaration-accessors-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) get method1() { return 0; }
+    @dec(12) set method1(value) {}
+    @dec(21) get ["method2"]() { return 0; }
+    @dec(22) set ["method2"](value) {}
+    @dec(31) get [method3]() { return 0; }
+    @dec(32) set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStatic.js]
+var _this = this;
+var method3 = "method3";
+var C = function () {
+    var _a;
+    var _b, _c;
+    var _instanceExtraInitializers = [];
+    var _get_method1_decorators;
+    var _set_method1_decorators;
+    var _get_member_decorators;
+    var _set_member_decorators;
+    var _get_member_decorators_1;
+    var _set_member_decorators_1;
+    return _a = /** @class */ (function () {
+            function C() {
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+            Object.defineProperty(C.prototype, "method1", {
+                get: function () { return 0; },
+                set: function (value) { },
+                enumerable: false,
+                configurable: true
+            });
+            Object.defineProperty(C.prototype, "method2", {
+                get: function () { return 0; },
+                set: function (value) { },
+                enumerable: false,
+                configurable: true
+            });
+            Object.defineProperty(C.prototype, (_get_method1_decorators = [dec(11)], _set_method1_decorators = [dec(12)], _get_member_decorators = [dec(21)], _set_member_decorators = [dec(22)], _get_member_decorators_1 = [dec(31)], _b = __propKey(method3)), {
+                get: function () { return 0; },
+                enumerable: false,
+                configurable: true
+            });
+            Object.defineProperty(C.prototype, (_set_member_decorators_1 = [dec(32)], _c = __propKey(method3)), {
+                set: function (value) { },
+                enumerable: false,
+                configurable: true
+            });
+            return C;
+        }()),
+        (function () {
+            __esDecorate(_a, null, _get_method1_decorators, { kind: "getter", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _set_method1_decorators, { kind: "setter", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _get_member_decorators, { kind: "getter", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _set_member_decorators, { kind: "setter", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _get_member_decorators_1, { kind: "getter", name: _b, static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _set_member_decorators_1, { kind: "setter", name: _c, static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=esnext).js
new file mode 100644
index 0000000000000..30c466a744261
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStatic(target=esnext).js
@@ -0,0 +1,31 @@
+//// [esDecorators-classDeclaration-accessors-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) get method1() { return 0; }
+    @dec(12) set method1(value) {}
+    @dec(21) get ["method2"]() { return 0; }
+    @dec(22) set ["method2"](value) {}
+    @dec(31) get [method3]() { return 0; }
+    @dec(32) set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStatic.js]
+const method3 = "method3";
+class C {
+    @dec(11)
+    get method1() { return 0; }
+    @dec(12)
+    set method1(value) { }
+    @dec(21)
+    get ["method2"]() { return 0; }
+    @dec(22)
+    set ["method2"](value) { }
+    @dec(31)
+    get [method3]() { return 0; }
+    @dec(32)
+    set [method3](value) { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2015).errors.txt
new file mode 100644
index 0000000000000..9a9fc92842f44
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2015).errors.txt
@@ -0,0 +1,34 @@
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(9,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(10,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(11,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts (6 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(11) abstract get method1(): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(12) abstract set method1(value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(21) abstract get ["method2"](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(22) abstract set ["method2"](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(31) abstract get [method3](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(32) abstract set [method3](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2015).js
new file mode 100644
index 0000000000000..a69890e6af08c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2015).js
@@ -0,0 +1,19 @@
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(11) abstract get method1(): number;
+    @dec(12) abstract set method1(value);
+    @dec(21) abstract get ["method2"](): number;
+    @dec(22) abstract set ["method2"](value);
+    @dec(31) abstract get [method3](): number;
+    @dec(32) abstract set [method3](value);
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.js]
+const method3 = "method3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2022).errors.txt
new file mode 100644
index 0000000000000..9a9fc92842f44
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2022).errors.txt
@@ -0,0 +1,34 @@
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(9,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(10,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(11,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts (6 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(11) abstract get method1(): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(12) abstract set method1(value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(21) abstract get ["method2"](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(22) abstract set ["method2"](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(31) abstract get [method3](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(32) abstract set [method3](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2022).js
new file mode 100644
index 0000000000000..a69890e6af08c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es2022).js
@@ -0,0 +1,19 @@
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(11) abstract get method1(): number;
+    @dec(12) abstract set method1(value);
+    @dec(21) abstract get ["method2"](): number;
+    @dec(22) abstract set ["method2"](value);
+    @dec(31) abstract get [method3](): number;
+    @dec(32) abstract set [method3](value);
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.js]
+const method3 = "method3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es5).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es5).errors.txt
new file mode 100644
index 0000000000000..9a9fc92842f44
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es5).errors.txt
@@ -0,0 +1,34 @@
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(9,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(10,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(11,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts (6 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(11) abstract get method1(): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(12) abstract set method1(value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(21) abstract get ["method2"](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(22) abstract set ["method2"](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(31) abstract get [method3](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(32) abstract set [method3](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es5).js
new file mode 100644
index 0000000000000..94bb8f522aeff
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=es5).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(11) abstract get method1(): number;
+    @dec(12) abstract set method1(value);
+    @dec(21) abstract get ["method2"](): number;
+    @dec(22) abstract set ["method2"](value);
+    @dec(31) abstract get [method3](): number;
+    @dec(32) abstract set [method3](value);
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.js]
+var method3 = "method3";
+var C = /** @class */ (function () {
+    function C() {
+    }
+    return C;
+}());
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=esnext).errors.txt
new file mode 100644
index 0000000000000..9a9fc92842f44
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=esnext).errors.txt
@@ -0,0 +1,34 @@
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(9,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(10,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts(11,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts (6 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(11) abstract get method1(): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(12) abstract set method1(value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(21) abstract get ["method2"](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(22) abstract set ["method2"](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(31) abstract get [method3](): number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(32) abstract set [method3](value);
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=esnext).js
new file mode 100644
index 0000000000000..a69890e6af08c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticAbstract(target=esnext).js
@@ -0,0 +1,19 @@
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(11) abstract get method1(): number;
+    @dec(12) abstract set method1(value);
+    @dec(21) abstract get ["method2"](): number;
+    @dec(22) abstract set ["method2"](value);
+    @dec(31) abstract get [method3](): number;
+    @dec(32) abstract set [method3](value);
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStaticAbstract.js]
+const method3 = "method3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=es2015).js
new file mode 100644
index 0000000000000..65a6cfaaa2252
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=es2015).js
@@ -0,0 +1,34 @@
+//// [esDecorators-classDeclaration-accessors-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec(1) get #method1() { return 0; }
+    @dec(2) set #method1(value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStaticPrivate.js]
+let C = (() => {
+    var _C_instances, _a, _C_method1_get, _C_method1_set;
+    let _instanceExtraInitializers = [];
+    let _private_get_method1_decorators;
+    let _private_get_method1_descriptor;
+    let _private_set_method1_decorators;
+    let _private_set_method1_descriptor;
+    return _a = class C {
+            constructor() {
+                _C_instances.add(this);
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+        },
+        _C_instances = new WeakSet(),
+        _C_method1_get = function _C_method1_get() { return _private_get_method1_descriptor.get.call(this); },
+        _C_method1_set = function _C_method1_set(value) { return _private_set_method1_descriptor.set.call(this, value); },
+        (() => {
+            _private_get_method1_decorators = [dec(1)];
+            _private_set_method1_decorators = [dec(2)];
+            __esDecorate(_a, _private_get_method1_descriptor = { get: __setFunctionName(function () { return 0; }, "#method1", "get") }, _private_get_method1_decorators, { kind: "getter", name: "#method1", static: false, private: true }, null, _instanceExtraInitializers);
+            __esDecorate(_a, _private_set_method1_descriptor = { set: __setFunctionName(function (value) { }, "#method1", "set") }, _private_set_method1_decorators, { kind: "setter", name: "#method1", static: false, private: true }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=es2022).js
new file mode 100644
index 0000000000000..e2556ba5c3e64
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=es2022).js
@@ -0,0 +1,30 @@
+//// [esDecorators-classDeclaration-accessors-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec(1) get #method1() { return 0; }
+    @dec(2) set #method1(value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStaticPrivate.js]
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_get_method1_decorators;
+    let _private_get_method1_descriptor;
+    let _private_set_method1_decorators;
+    let _private_set_method1_descriptor;
+    return class C {
+        static {
+            _private_get_method1_decorators = [dec(1)];
+            _private_set_method1_decorators = [dec(2)];
+            __esDecorate(this, _private_get_method1_descriptor = { get: __setFunctionName(function () { return 0; }, "#method1", "get") }, _private_get_method1_decorators, { kind: "getter", name: "#method1", static: false, private: true }, null, _instanceExtraInitializers);
+            __esDecorate(this, _private_set_method1_descriptor = { set: __setFunctionName(function (value) { }, "#method1", "set") }, _private_set_method1_decorators, { kind: "setter", name: "#method1", static: false, private: true }, null, _instanceExtraInitializers);
+        }
+        get #method1() { return _private_get_method1_descriptor.get.call(this); }
+        set #method1(value) { return _private_set_method1_descriptor.set.call(this, value); }
+        constructor() {
+            __runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=esnext).js
new file mode 100644
index 0000000000000..2532e1cfc46e2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-nonStaticPrivate(target=esnext).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-accessors-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec(1) get #method1() { return 0; }
+    @dec(2) set #method1(value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-nonStaticPrivate.js]
+class C {
+    @dec(1)
+    get #method1() { return 0; }
+    @dec(2)
+    set #method1(value) { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es2015).js
new file mode 100644
index 0000000000000..e4b87d775a091
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es2015).js
@@ -0,0 +1,46 @@
+//// [esDecorators-classDeclaration-accessors-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) static get method1() { return 0; }
+    @dec(12) static set method1(value) {}
+    @dec(21) static get ["method2"]() { return 0; }
+    @dec(22) static set ["method2"](value) {}
+    @dec(31) static get [method3]() { return 0; }
+    @dec(32) static set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-static.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    var _b, _c;
+    let _staticExtraInitializers = [];
+    let _static_get_method1_decorators;
+    let _static_set_method1_decorators;
+    let _static_get_member_decorators;
+    let _static_set_member_decorators;
+    let _static_get_member_decorators_1;
+    let _static_set_member_decorators_1;
+    return _a = class C {
+            static get method1() { return 0; }
+            static set method1(value) { }
+            static get ["method2"]() { return 0; }
+            static set ["method2"](value) { }
+            static get [(_static_get_method1_decorators = [dec(11)], _static_set_method1_decorators = [dec(12)], _static_get_member_decorators = [dec(21)], _static_set_member_decorators = [dec(22)], _static_get_member_decorators_1 = [dec(31)], _b = __propKey(method3))]() { return 0; }
+            static set [(_static_set_member_decorators_1 = [dec(32)], _c = __propKey(method3))](value) { }
+        },
+        (() => {
+            __esDecorate(_a, null, _static_get_method1_decorators, { kind: "getter", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_set_method1_decorators, { kind: "setter", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_get_member_decorators, { kind: "getter", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_set_member_decorators, { kind: "setter", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_get_member_decorators_1, { kind: "getter", name: _b, static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_set_member_decorators_1, { kind: "setter", name: _c, static: true, private: false }, null, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es2022).js
new file mode 100644
index 0000000000000..a69d475a3952f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es2022).js
@@ -0,0 +1,44 @@
+//// [esDecorators-classDeclaration-accessors-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) static get method1() { return 0; }
+    @dec(12) static set method1(value) {}
+    @dec(21) static get ["method2"]() { return 0; }
+    @dec(22) static set ["method2"](value) {}
+    @dec(31) static get [method3]() { return 0; }
+    @dec(32) static set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-static.js]
+const method3 = "method3";
+let C = (() => {
+    var _a, _b;
+    let _staticExtraInitializers = [];
+    let _static_get_method1_decorators;
+    let _static_set_method1_decorators;
+    let _static_get_member_decorators;
+    let _static_set_member_decorators;
+    let _static_get_member_decorators_1;
+    let _static_set_member_decorators_1;
+    return class C {
+        static {
+            __esDecorate(this, null, _static_get_method1_decorators, { kind: "getter", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_set_method1_decorators, { kind: "setter", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_get_member_decorators, { kind: "getter", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_set_member_decorators, { kind: "setter", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_get_member_decorators_1, { kind: "getter", name: _a, static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_set_member_decorators_1, { kind: "setter", name: _b, static: true, private: false }, null, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static get method1() { return 0; }
+        static set method1(value) { }
+        static get ["method2"]() { return 0; }
+        static set ["method2"](value) { }
+        static get [(_static_get_method1_decorators = [dec(11)], _static_set_method1_decorators = [dec(12)], _static_get_member_decorators = [dec(21)], _static_set_member_decorators = [dec(22)], _static_get_member_decorators_1 = [dec(31)], _a = __propKey(method3))]() { return 0; }
+        static set [(_static_set_member_decorators_1 = [dec(32)], _b = __propKey(method3))](value) { }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es5).js
new file mode 100644
index 0000000000000..c489fbbc63c83
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=es5).js
@@ -0,0 +1,66 @@
+//// [esDecorators-classDeclaration-accessors-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) static get method1() { return 0; }
+    @dec(12) static set method1(value) {}
+    @dec(21) static get ["method2"]() { return 0; }
+    @dec(22) static set ["method2"](value) {}
+    @dec(31) static get [method3]() { return 0; }
+    @dec(32) static set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-static.js]
+var _this = this;
+var method3 = "method3";
+var C = function () {
+    var _a;
+    var _b, _c;
+    var _staticExtraInitializers = [];
+    var _static_get_method1_decorators;
+    var _static_set_method1_decorators;
+    var _static_get_member_decorators;
+    var _static_set_member_decorators;
+    var _static_get_member_decorators_1;
+    var _static_set_member_decorators_1;
+    return _a = /** @class */ (function () {
+            function C() {
+            }
+            Object.defineProperty(C, "method1", {
+                get: function () { return 0; },
+                set: function (value) { },
+                enumerable: false,
+                configurable: true
+            });
+            Object.defineProperty(C, "method2", {
+                get: function () { return 0; },
+                set: function (value) { },
+                enumerable: false,
+                configurable: true
+            });
+            Object.defineProperty(C, (_static_get_method1_decorators = [dec(11)], _static_set_method1_decorators = [dec(12)], _static_get_member_decorators = [dec(21)], _static_set_member_decorators = [dec(22)], _static_get_member_decorators_1 = [dec(31)], _b = __propKey(method3)), {
+                get: function () { return 0; },
+                enumerable: false,
+                configurable: true
+            });
+            Object.defineProperty(C, (_static_set_member_decorators_1 = [dec(32)], _c = __propKey(method3)), {
+                set: function (value) { },
+                enumerable: false,
+                configurable: true
+            });
+            return C;
+        }()),
+        (function () {
+            __esDecorate(_a, null, _static_get_method1_decorators, { kind: "getter", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_set_method1_decorators, { kind: "setter", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_get_member_decorators, { kind: "getter", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_set_member_decorators, { kind: "setter", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_get_member_decorators_1, { kind: "getter", name: _b, static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_set_member_decorators_1, { kind: "setter", name: _c, static: true, private: false }, null, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=esnext).js
new file mode 100644
index 0000000000000..3a0729fc9f5b1
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-static(target=esnext).js
@@ -0,0 +1,31 @@
+//// [esDecorators-classDeclaration-accessors-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) static get method1() { return 0; }
+    @dec(12) static set method1(value) {}
+    @dec(21) static get ["method2"]() { return 0; }
+    @dec(22) static set ["method2"](value) {}
+    @dec(31) static get [method3]() { return 0; }
+    @dec(32) static set [method3](value) {}
+}
+
+
+//// [esDecorators-classDeclaration-accessors-static.js]
+const method3 = "method3";
+class C {
+    @dec(11)
+    static get method1() { return 0; }
+    @dec(12)
+    static set method1(value) { }
+    @dec(21)
+    static get ["method2"]() { return 0; }
+    @dec(22)
+    static set ["method2"](value) { }
+    @dec(31)
+    static get [method3]() { return 0; }
+    @dec(32)
+    static set [method3](value) { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=es2015).js
new file mode 100644
index 0000000000000..2c733ba8cb951
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=es2015).js
@@ -0,0 +1,64 @@
+//// [esDecorators-classDeclaration-accessors-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec(1) static get #method1() { return 0; }
+    @dec(2) static set #method1(value) {}
+}
+
+@dec
+class D {
+    static get #method1() { return 0; }
+    static set #method1(value) {}
+    static {
+        this.#method1;
+        this.#method1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-accessors-staticPrivate.js]
+let C = (() => {
+    var _a, _C_method1_get, _C_method1_set;
+    let _staticExtraInitializers = [];
+    let _static_private_get_method1_decorators;
+    let _static_private_get_method1_descriptor;
+    let _static_private_set_method1_decorators;
+    let _static_private_set_method1_descriptor;
+    return _a = class C {
+        },
+        _C_method1_get = function _C_method1_get() { return _static_private_get_method1_descriptor.get.call(this); },
+        _C_method1_set = function _C_method1_set(value) { return _static_private_set_method1_descriptor.set.call(this, value); },
+        (() => {
+            _static_private_get_method1_decorators = [dec(1)];
+            _static_private_set_method1_decorators = [dec(2)];
+            __esDecorate(_a, _static_private_get_method1_descriptor = { get: __setFunctionName(function () { return 0; }, "#method1", "get") }, _static_private_get_method1_decorators, { kind: "getter", name: "#method1", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(_a, _static_private_set_method1_descriptor = { set: __setFunctionName(function (value) { }, "#method1", "set") }, _static_private_set_method1_decorators, { kind: "setter", name: "#method1", static: true, private: true }, null, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a;
+})();
+let D = (() => {
+    var _method1_get, _method1_set;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = _classThis = class {
+    };
+    _method1_get = function _method1_get() { return 0; };
+    _method1_set = function _method1_set(value) { };
+    __setFunctionName(_classThis, "D");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        D = _classThis = _classDescriptor.value;
+    })();
+    (() => {
+        __classPrivateFieldGet(_classThis, _classThis, "a", _method1_get);
+        __classPrivateFieldSet(_classThis, _classThis, 1, "a", _method1_set);
+    })();
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=es2022).js
new file mode 100644
index 0000000000000..ac2fffaa2fd7e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=es2022).js
@@ -0,0 +1,61 @@
+//// [esDecorators-classDeclaration-accessors-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec(1) static get #method1() { return 0; }
+    @dec(2) static set #method1(value) {}
+}
+
+@dec
+class D {
+    static get #method1() { return 0; }
+    static set #method1(value) {}
+    static {
+        this.#method1;
+        this.#method1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-accessors-staticPrivate.js]
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_get_method1_decorators;
+    let _static_private_get_method1_descriptor;
+    let _static_private_set_method1_decorators;
+    let _static_private_set_method1_descriptor;
+    return class C {
+        static {
+            _static_private_get_method1_decorators = [dec(1)];
+            _static_private_set_method1_decorators = [dec(2)];
+            __esDecorate(this, _static_private_get_method1_descriptor = { get: __setFunctionName(function () { return 0; }, "#method1", "get") }, _static_private_get_method1_decorators, { kind: "getter", name: "#method1", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_set_method1_descriptor = { set: __setFunctionName(function (value) { }, "#method1", "set") }, _static_private_set_method1_decorators, { kind: "setter", name: "#method1", static: true, private: true }, null, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static get #method1() { return _static_private_get_method1_descriptor.get.call(this); }
+        static set #method1(value) { return _static_private_set_method1_descriptor.set.call(this, value); }
+    };
+})();
+let D = (() => {
+    var _method1_get, _method1_set;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = class {
+        static { __setFunctionName(this, "D"); }
+        static { _method1_get = function _method1_get() { return 0; }, _method1_set = function _method1_set(value) { }; }
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            D = _classThis = _classDescriptor.value;
+        }
+        static {
+            __classPrivateFieldGet(_classThis, _classThis, "a", _method1_get);
+            __classPrivateFieldSet(_classThis, _classThis, 1, "a", _method1_set);
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=esnext).js
new file mode 100644
index 0000000000000..7db3406603928
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-accessors-staticPrivate(target=esnext).js
@@ -0,0 +1,35 @@
+//// [esDecorators-classDeclaration-accessors-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec(1) static get #method1() { return 0; }
+    @dec(2) static set #method1(value) {}
+}
+
+@dec
+class D {
+    static get #method1() { return 0; }
+    static set #method1(value) {}
+    static {
+        this.#method1;
+        this.#method1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-accessors-staticPrivate.js]
+class C {
+    @dec(1)
+    static get #method1() { return 0; }
+    @dec(2)
+    static set #method1(value) { }
+}
+@dec
+class D {
+    static get #method1() { return 0; }
+    static set #method1(value) { }
+    static {
+        this.#method1;
+        this.#method1 = 1;
+    }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classSuper.1.js b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.1.js
new file mode 100644
index 0000000000000..1fc2933e85b42
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.1.js
@@ -0,0 +1,50 @@
+//// [esDecorators-classDeclaration-classSuper.1.ts]
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): void;
+}
+
+const method = "method";
+
+@dec
+class C extends Base {
+    static {
+        super.method();
+        super["method"]();
+        super[method]();
+
+        super.method``;
+        super["method"]``;
+        super[method]``;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-classSuper.1.js]
+const method = "method";
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+        }
+        static {
+            Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+            Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+            Reflect.get(_classSuper, method, _classThis).call(_classThis);
+            Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+            Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+            Reflect.get(_classSuper, method, _classThis).bind(_classThis) ``;
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classSuper.2.js b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.2.js
new file mode 100644
index 0000000000000..a8ac1577f4231
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.2.js
@@ -0,0 +1,93 @@
+//// [esDecorators-classDeclaration-classSuper.2.ts]
+declare var dec: any;
+
+// class expression in extends should not get an assigned name
+@dec
+class C1 extends class { } {
+    static {
+        super.name;
+    }
+}
+
+// function expression in extends should not get an assigned name
+@dec
+class C2 extends (function() {} as any) {
+    static {
+        super.name;
+    }
+}
+
+// arrow function in extends should not get an assigned name
+@dec
+class C3 extends ((() => {}) as any) {
+    static {
+        super.name;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-classSuper.2.js]
+// class expression in extends should not get an assigned name
+let C1 = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = (0, class {
+    });
+    var C1 = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C1 = _classThis = _classDescriptor.value;
+        }
+        static {
+            Reflect.get(_classSuper, "name", _classThis);
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C1 = _classThis;
+})();
+// function expression in extends should not get an assigned name
+let C2 = (() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _classSuper_1 = (0, function () { });
+    var C2 = class extends _classSuper_1 {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            C2 = _classThis_1 = _classDescriptor_1.value;
+        }
+        static {
+            Reflect.get(_classSuper_1, "name", _classThis_1);
+        }
+        static {
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return C2 = _classThis_1;
+})();
+// arrow function in extends should not get an assigned name
+let C3 = (() => {
+    let _classDecorators_2 = [dec];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    let _classSuper_2 = (0, (() => { }));
+    var C3 = class extends _classSuper_2 {
+        static {
+            __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+            C3 = _classThis_2 = _classDescriptor_2.value;
+        }
+        static {
+            Reflect.get(_classSuper_2, "name", _classThis_2);
+        }
+        static {
+            __runInitializers(_classThis_2, _classExtraInitializers_2);
+        }
+    };
+    return C3 = _classThis_2;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classSuper.3.js b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.3.js
new file mode 100644
index 0000000000000..d970c0bf48412
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.3.js
@@ -0,0 +1,94 @@
+//// [esDecorators-classDeclaration-classSuper.3.ts]
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+@dec
+class C extends Base {
+    static {
+        super.x;
+        super.x = 1;
+        super.x += 1;
+        super.x++;
+        super.x--;
+        ++super.x;
+        --super.x;
+        ({ x: super.x } = { x: 1 });
+        [super.x] = [1];
+
+        super["x"];
+        super["x"] = 1;
+        super["x"] += 1;
+        super["x"]++;
+        super["x"]--;
+        ++super["x"];
+        --super["x"];
+        ({ x: super["x"] } = { x: 1 });
+        [super["x"]] = [1];
+
+        super[x];
+        super[x] = 1;
+        super[x] += 1;
+        super[x]++;
+        super[x]--;
+        ++super[x];
+        --super[x];
+        ({ x: super[x] } = { x: 1 });
+        [super[x]] = [1];
+    }
+}
+
+
+//// [esDecorators-classDeclaration-classSuper.3.js]
+const x = "x";
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+        }
+        static {
+            var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m, _o, _p, _q, _r, _s;
+            Reflect.get(_classSuper, "x", _classThis);
+            Reflect.set(_classSuper, "x", 1, _classThis);
+            Reflect.set(_classSuper, "x", Reflect.get(_classSuper, "x", _classThis) + 1, _classThis);
+            Reflect.set(_classSuper, "x", (_a = Reflect.get(_classSuper, "x", _classThis), _a++, _a), _classThis);
+            Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _b--, _b), _classThis);
+            Reflect.set(_classSuper, "x", (_c = Reflect.get(_classSuper, "x", _classThis), ++_c), _classThis);
+            Reflect.set(_classSuper, "x", (_d = Reflect.get(_classSuper, "x", _classThis), --_d), _classThis);
+            ({ x: ({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value } = { x: 1 });
+            [({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value] = [1];
+            Reflect.get(_classSuper, "x", _classThis);
+            Reflect.set(_classSuper, "x", 1, _classThis);
+            Reflect.set(_classSuper, "x", Reflect.get(_classSuper, "x", _classThis) + 1, _classThis);
+            Reflect.set(_classSuper, "x", (_e = Reflect.get(_classSuper, "x", _classThis), _e++, _e), _classThis);
+            Reflect.set(_classSuper, "x", (_f = Reflect.get(_classSuper, "x", _classThis), _f--, _f), _classThis);
+            Reflect.set(_classSuper, "x", (_g = Reflect.get(_classSuper, "x", _classThis), ++_g), _classThis);
+            Reflect.set(_classSuper, "x", (_h = Reflect.get(_classSuper, "x", _classThis), --_h), _classThis);
+            ({ x: ({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value } = { x: 1 });
+            [({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value] = [1];
+            Reflect.get(_classSuper, x, _classThis);
+            Reflect.set(_classSuper, x, 1, _classThis);
+            Reflect.set(_classSuper, _j = x, Reflect.get(_classSuper, _j, _classThis) + 1, _classThis);
+            Reflect.set(_classSuper, _k = x, (_l = Reflect.get(_classSuper, _k, _classThis), _l++, _l), _classThis);
+            Reflect.set(_classSuper, _m = x, (_o = Reflect.get(_classSuper, _m, _classThis), _o--, _o), _classThis);
+            Reflect.set(_classSuper, _p = x, (_q = Reflect.get(_classSuper, _p, _classThis), ++_q), _classThis);
+            Reflect.set(_classSuper, _r = x, (_s = Reflect.get(_classSuper, _r, _classThis), --_s), _classThis);
+            ({ x: ({ set value(_a) { Reflect.set(_classSuper, x, _a, _classThis); } }).value } = { x: 1 });
+            [({ set value(_a) { Reflect.set(_classSuper, x, _a, _classThis); } }).value] = [1];
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classSuper.4.js b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.4.js
new file mode 100644
index 0000000000000..33451269c0573
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.4.js
@@ -0,0 +1,45 @@
+//// [esDecorators-classDeclaration-classSuper.4.ts]
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+}
+
+const method = "method";
+
+@dec
+class C extends Base {
+    static a = super.method();
+    static b = super["method"]();
+    static c = super[method]();
+    static d = super.method``;
+    static e = super["method"]``;
+    static f = super[method]``;
+}
+
+
+//// [esDecorators-classDeclaration-classSuper.4.js]
+const method = "method";
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+        }
+        static a = Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+        static b = Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+        static c = Reflect.get(_classSuper, method, _classThis).call(_classThis);
+        static d = Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+        static e = Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+        static f = Reflect.get(_classSuper, method, _classThis).bind(_classThis) ``;
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classSuper.5.js b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.5.js
new file mode 100644
index 0000000000000..f2085eac5ee9c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.5.js
@@ -0,0 +1,183 @@
+//// [esDecorators-classDeclaration-classSuper.5.ts]
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+@dec
+class C1 extends Base {
+    static a = super.x;
+    static b = super.x = 1;
+    static c = super.x += 1;
+    static d = super.x++;
+    static e = super.x--;
+    static f = ++super.x;
+    static g = --super.x;
+    static h = ({ x: super.x } = { x: 1 });
+    static i = [super.x] = [1];
+}
+
+@dec
+class C2 extends Base {
+    static a = super["x"];
+    static b = super["x"] = 1;
+    static c = super["x"] += 1;
+    static d = super["x"]++;
+    static e = super["x"]--;
+    static f = ++super["x"];
+    static g = --super["x"];
+    static h = ({ x: super["x"] } = { x: 1 });
+    static i = [super["x"]] = [1];
+}
+
+@dec
+class C3 extends Base {
+    static a = super[x];
+    static b = super[x] = 1;
+    static c = super[x] += 1;
+    static d = super[x]++;
+    static e = super[x]--;
+    static f = ++super[x];
+    static g = --super[x];
+    static h = ({ x: super[x] } = { x: 1 });
+    static i = [super[x]] = [1];
+}
+
+
+//// [esDecorators-classDeclaration-classSuper.5.js]
+const x = "x";
+let C1 = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C1 = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C1 = _classThis = _classDescriptor.value;
+        }
+        static a = Reflect.get(_classSuper, "x", _classThis);
+        static b = (() => {
+            var _a;
+            return Reflect.set(_classSuper, "x", _a = 1, _classThis), _a;
+        })();
+        static c = (() => {
+            var _a;
+            return Reflect.set(_classSuper, "x", _a = Reflect.get(_classSuper, "x", _classThis) + 1, _classThis), _a;
+        })();
+        static d = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = _b++, _b), _classThis), _a;
+        })();
+        static e = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = _b--, _b), _classThis), _a;
+        })();
+        static f = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = ++_b), _classThis), _a;
+        })();
+        static g = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = --_b), _classThis), _a;
+        })();
+        static h = ({ x: ({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value } = { x: 1 });
+        static i = [({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value] = [1];
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C1 = _classThis;
+})();
+let C2 = (() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _classSuper_1 = Base;
+    var C2 = class extends _classSuper_1 {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            C2 = _classThis_1 = _classDescriptor_1.value;
+        }
+        static a = Reflect.get(_classSuper_1, "x", _classThis_1);
+        static b = (() => {
+            var _a;
+            return Reflect.set(_classSuper_1, "x", _a = 1, _classThis_1), _a;
+        })();
+        static c = (() => {
+            var _a;
+            return Reflect.set(_classSuper_1, "x", _a = Reflect.get(_classSuper_1, "x", _classThis_1) + 1, _classThis_1), _a;
+        })();
+        static d = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = _b++, _b), _classThis_1), _a;
+        })();
+        static e = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = _b--, _b), _classThis_1), _a;
+        })();
+        static f = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = ++_b), _classThis_1), _a;
+        })();
+        static g = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = --_b), _classThis_1), _a;
+        })();
+        static h = ({ x: ({ set value(_a) { Reflect.set(_classSuper_1, "x", _a, _classThis_1); } }).value } = { x: 1 });
+        static i = [({ set value(_a) { Reflect.set(_classSuper_1, "x", _a, _classThis_1); } }).value] = [1];
+        static {
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return C2 = _classThis_1;
+})();
+let C3 = (() => {
+    let _classDecorators_2 = [dec];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    let _classSuper_2 = Base;
+    var C3 = class extends _classSuper_2 {
+        static {
+            __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+            C3 = _classThis_2 = _classDescriptor_2.value;
+        }
+        static a = Reflect.get(_classSuper_2, x, _classThis_2);
+        static b = (() => {
+            var _a;
+            return Reflect.set(_classSuper_2, x, _a = 1, _classThis_2), _a;
+        })();
+        static c = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_2, _a = x, _b = Reflect.get(_classSuper_2, _a, _classThis_2) + 1, _classThis_2), _b;
+        })();
+        static d = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = _c++, _c), _classThis_2), _b;
+        })();
+        static e = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = _c--, _c), _classThis_2), _b;
+        })();
+        static f = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = ++_c), _classThis_2), _b;
+        })();
+        static g = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = --_c), _classThis_2), _b;
+        })();
+        static h = ({ x: ({ set value(_a) { Reflect.set(_classSuper_2, x, _a, _classThis_2); } }).value } = { x: 1 });
+        static i = [({ set value(_a) { Reflect.set(_classSuper_2, x, _a, _classThis_2); } }).value] = [1];
+        static {
+            __runInitializers(_classThis_2, _classExtraInitializers_2);
+        }
+    };
+    return C3 = _classThis_2;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classSuper.6.js b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.6.js
new file mode 100644
index 0000000000000..61caf27db40e2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classSuper.6.js
@@ -0,0 +1,54 @@
+//// [esDecorators-classDeclaration-classSuper.6.ts]
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+    method(...args: any[]): number;
+}
+
+// none of the following should result in caching `super`
+@dec
+class C extends Base {
+    static m() { super.method(); }
+    static get x() { return super.method(); }
+    static set x(v: number) { super.method(); }
+
+    constructor() {
+        super();
+        super.method();
+    }
+
+    a = super.method();
+    m() { super.method(); }
+    get x() { return super.method(); }
+    set x(v: number) { super.method(); }
+}
+
+
+//// [esDecorators-classDeclaration-classSuper.6.js]
+// none of the following should result in caching `super`
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class extends Base {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+        static m() { super.method(); }
+        static get x() { return super.method(); }
+        static set x(v) { super.method(); }
+        constructor() {
+            super();
+            super.method();
+        }
+        a = super.method();
+        m() { super.method(); }
+        get x() { return super.method(); }
+        set x(v) { super.method(); }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=es2015).js
new file mode 100644
index 0000000000000..086bc280bb02e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=es2015).js
@@ -0,0 +1,41 @@
+//// [esDecorators-classDeclaration-classThisReference.ts]
+declare let dec: any;
+
+@dec
+class C {
+    static { this; }
+    static x: any = this;
+    static accessor a: any = this;
+    static m() { this; }
+    static get g() { return this; }
+}
+
+
+//// [esDecorators-classDeclaration-classThisReference.js]
+let C = (() => {
+    var _a_accessor_storage;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = _classThis = class {
+        static get a() { return __classPrivateFieldGet(_classThis, _classThis, "f", _a_accessor_storage); }
+        static set a(value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _a_accessor_storage); }
+        static m() { this; }
+        static get g() { return this; }
+    };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+    })();
+    (() => {
+        _classThis;
+    })();
+    _classThis.x = _classThis;
+    _a_accessor_storage = { value: _classThis };
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=es2022).js
new file mode 100644
index 0000000000000..384f95606c9c6
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=es2022).js
@@ -0,0 +1,41 @@
+//// [esDecorators-classDeclaration-classThisReference.ts]
+declare let dec: any;
+
+@dec
+class C {
+    static { this; }
+    static x: any = this;
+    static accessor a: any = this;
+    static m() { this; }
+    static get g() { return this; }
+}
+
+
+//// [esDecorators-classDeclaration-classThisReference.js]
+let C = (() => {
+    var _a_accessor_storage;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static { __setFunctionName(this, "C"); }
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+        }
+        static { _classThis; }
+        static x = _classThis;
+        static {
+            _a_accessor_storage = { value: _classThis };
+        }
+        static get a() { return __classPrivateFieldGet(this, _classThis, "f", _a_accessor_storage); }
+        static set a(value) { __classPrivateFieldSet(this, _classThis, value, "f", _a_accessor_storage); }
+        static m() { this; }
+        static get g() { return this; }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=esnext).js
new file mode 100644
index 0000000000000..aa3766a440877
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference(target=esnext).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-classThisReference.ts]
+declare let dec: any;
+
+@dec
+class C {
+    static { this; }
+    static x: any = this;
+    static accessor a: any = this;
+    static m() { this; }
+    static get g() { return this; }
+}
+
+
+//// [esDecorators-classDeclaration-classThisReference.js]
+@dec
+class C {
+    static { this; }
+    static x = this;
+    static accessor a = this;
+    static m() { this; }
+    static get g() { return this; }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-classThisReference.es5.js b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference.es5.js
new file mode 100644
index 0000000000000..218d40b4c367d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-classThisReference.es5.js
@@ -0,0 +1,44 @@
+//// [esDecorators-classDeclaration-classThisReference.es5.ts]
+declare let dec: any;
+
+@dec
+class C {
+    static { this; }
+    static x: any = this;
+    static m() { this; }
+    static get g() { return this; }
+}
+
+
+//// [esDecorators-classDeclaration-classThisReference.es5.js]
+var _this = this;
+var C = function () {
+    var _classDecorators = [dec];
+    var _classDescriptor;
+    var _classExtraInitializers = [];
+    var _classThis;
+    var C = _classThis = /** @class */ (function () {
+        function C_1() {
+        }
+        C_1.m = function () { this; };
+        Object.defineProperty(C_1, "g", {
+            get: function () { return this; },
+            enumerable: false,
+            configurable: true
+        });
+        return C_1;
+    }());
+    __setFunctionName(_classThis, "C");
+    (function () {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+    })();
+    (function () {
+        _classThis;
+    })();
+    _classThis.x = _classThis;
+    (function () {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=es2015).js
new file mode 100644
index 0000000000000..e3b48cc80d45d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=es2015).js
@@ -0,0 +1,275 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts] ////
+
+//// [file1.ts]
+declare var dec: any;
+
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() {}
+
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value: number) { }
+
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() {}
+
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value: number) { }
+
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+
+//// [file2.ts]
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+
+//// [file3.ts]
+/*40*/
+export
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+
+/*44*/
+export default
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
+
+
+//// [file1.js]
+/*1*/
+let C = (() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set, _z_1_accessor_storage;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = _classThis = class {
+        constructor() {
+            /*13*/
+            this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+            _z_1_accessor_storage.set(this, __runInitializers(this, _z_initializers, 1));
+        }
+        /*4*/
+        method() { }
+        /*7*/
+        get x() { return 1; }
+        /*10*/
+        set x(value) { }
+        /*16*/
+        get z() { return __classPrivateFieldGet(this, _z_1_accessor_storage, "f"); }
+        set z(value) { __classPrivateFieldSet(this, _z_1_accessor_storage, value, "f"); }
+    };
+    _z_1_accessor_storage = new WeakMap();
+    _method_get = function _method_get() { return _static_private_method_descriptor.value; };
+    _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); };
+    _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); };
+    _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); };
+    _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        _method_decorators = [dec, dec];
+        _get_x_decorators = [dec, dec];
+        _set_x_decorators = [dec, dec];
+        _y_decorators = [dec, dec];
+        _z_decorators = [dec, dec];
+        _static_private_method_decorators = [dec, dec];
+        _static_private_get_x_decorators = [dec, dec];
+        _static_private_set_x_decorators = [dec, dec];
+        _static_private_y_decorators = [dec, dec];
+        _static_private_z_decorators = [dec, dec];
+        __esDecorate(_classThis, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(_classThis, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+        __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+        __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+        __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _staticExtraInitializers);
+    })();
+    /*28*/
+    _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+    _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
+//// [file2.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.D = void 0;
+/*34*/
+exports.D = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = _classThis = class {
+    };
+    __setFunctionName(_classThis, "D");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        D = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return D = _classThis;
+})();
+exports.default = (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var E = _classThis_1 = class {
+    };
+    __setFunctionName(_classThis_1, "E");
+    (() => {
+        __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+        E = _classThis_1 = _classDescriptor_1.value;
+        __runInitializers(_classThis_1, _classExtraInitializers_1);
+    })();
+    return E = _classThis_1;
+})();
+//// [file3.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.F = void 0;
+/*40*/
+exports.F = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var F = _classThis = class {
+    };
+    __setFunctionName(_classThis, "F");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        F = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return F = _classThis;
+})();
+exports.default = (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var G = _classThis_1 = class {
+    };
+    __setFunctionName(_classThis_1, "G");
+    (() => {
+        __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+        G = _classThis_1 = _classDescriptor_1.value;
+        __runInitializers(_classThis_1, _classExtraInitializers_1);
+    })();
+    return G = _classThis_1;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=es2022).js
new file mode 100644
index 0000000000000..ff39528a0fd80
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=es2022).js
@@ -0,0 +1,268 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts] ////
+
+//// [file1.ts]
+declare var dec: any;
+
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() {}
+
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value: number) { }
+
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() {}
+
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value: number) { }
+
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+
+//// [file2.ts]
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+
+//// [file3.ts]
+/*40*/
+export
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+
+/*44*/
+export default
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
+
+
+//// [file1.js]
+/*1*/
+let C = (() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = class {
+        static { __setFunctionName(this, "C"); }
+        static { _method_get = function _method_get() { return _static_private_method_descriptor.value; }, _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); }, _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); }, _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); }, _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); }; }
+        static {
+            _method_decorators = [dec, dec];
+            _get_x_decorators = [dec, dec];
+            _set_x_decorators = [dec, dec];
+            _y_decorators = [dec, dec];
+            _z_decorators = [dec, dec];
+            _static_private_method_decorators = [dec, dec];
+            _static_private_get_x_decorators = [dec, dec];
+            _static_private_set_x_decorators = [dec, dec];
+            _static_private_y_decorators = [dec, dec];
+            _static_private_z_decorators = [dec, dec];
+            __esDecorate(this, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(this, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(this, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+            __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _staticExtraInitializers);
+        }
+        /*4*/
+        method() { }
+        /*7*/
+        get x() { return 1; }
+        /*10*/
+        set x(value) { }
+        /*13*/
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+        #z_accessor_storage = __runInitializers(this, _z_initializers, 1);
+        /*16*/
+        get z() { return this.#z_accessor_storage; }
+        set z(value) { this.#z_accessor_storage = value; }
+        static {
+            /*28*/
+            _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+        }
+        static {
+            _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
+//// [file2.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.D = void 0;
+/*34*/
+exports.D = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            D = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return D = _classThis;
+})();
+exports.default = (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var E = class {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            E = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return E = _classThis_1;
+})();
+//// [file3.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.F = void 0;
+/*40*/
+exports.F = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var F = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            F = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return F = _classThis;
+})();
+exports.default = (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var G = class {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            G = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return G = _classThis_1;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=esnext).js
new file mode 100644
index 0000000000000..4008d7e6d3fbb
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=commonjs,target=esnext).js
@@ -0,0 +1,231 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts] ////
+
+//// [file1.ts]
+declare var dec: any;
+
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() {}
+
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value: number) { }
+
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() {}
+
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value: number) { }
+
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+
+//// [file2.ts]
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+
+//// [file3.ts]
+/*40*/
+export
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+
+/*44*/
+export default
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
+
+
+//// [file1.js]
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() { }
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value) { }
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() { }
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value) { }
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+//// [file2.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.D = void 0;
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+class D {
+}
+exports.D = D;
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+class E {
+}
+exports.default = E;
+//// [file3.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.F = void 0;
+/*40*/
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+exports.F = F;
+/*44*/
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
+exports.default = G;
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=es2015).js
new file mode 100644
index 0000000000000..cd178ffe1d48b
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=es2015).js
@@ -0,0 +1,272 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts] ////
+
+//// [file1.ts]
+declare var dec: any;
+
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() {}
+
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value: number) { }
+
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() {}
+
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value: number) { }
+
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+
+//// [file2.ts]
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+
+//// [file3.ts]
+/*40*/
+export
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+
+/*44*/
+export default
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
+
+
+//// [file1.js]
+/*1*/
+let C = (() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set, _z_1_accessor_storage;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = _classThis = class {
+        constructor() {
+            /*13*/
+            this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+            _z_1_accessor_storage.set(this, __runInitializers(this, _z_initializers, 1));
+        }
+        /*4*/
+        method() { }
+        /*7*/
+        get x() { return 1; }
+        /*10*/
+        set x(value) { }
+        /*16*/
+        get z() { return __classPrivateFieldGet(this, _z_1_accessor_storage, "f"); }
+        set z(value) { __classPrivateFieldSet(this, _z_1_accessor_storage, value, "f"); }
+    };
+    _z_1_accessor_storage = new WeakMap();
+    _method_get = function _method_get() { return _static_private_method_descriptor.value; };
+    _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); };
+    _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); };
+    _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); };
+    _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        _method_decorators = [dec, dec];
+        _get_x_decorators = [dec, dec];
+        _set_x_decorators = [dec, dec];
+        _y_decorators = [dec, dec];
+        _z_decorators = [dec, dec];
+        _static_private_method_decorators = [dec, dec];
+        _static_private_get_x_decorators = [dec, dec];
+        _static_private_set_x_decorators = [dec, dec];
+        _static_private_y_decorators = [dec, dec];
+        _static_private_z_decorators = [dec, dec];
+        __esDecorate(_classThis, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(_classThis, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+        __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+        __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+        __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _staticExtraInitializers);
+    })();
+    /*28*/
+    _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+    _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
+//// [file2.js]
+/*34*/
+/*36*/
+export let D = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = _classThis = class {
+    };
+    __setFunctionName(_classThis, "D");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        D = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return D = _classThis;
+})();
+/*37*/
+export default (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var E = _classThis_1 = class {
+    };
+    __setFunctionName(_classThis_1, "E");
+    (() => {
+        __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+        E = _classThis_1 = _classDescriptor_1.value;
+        __runInitializers(_classThis_1, _classExtraInitializers_1);
+    })();
+    return E = _classThis_1;
+})();
+//// [file3.js]
+/*40*/
+export let F = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var F = _classThis = class {
+    };
+    __setFunctionName(_classThis, "F");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        F = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return F = _classThis;
+})();
+/*44*/
+export default (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var G = _classThis_1 = class {
+    };
+    __setFunctionName(_classThis_1, "G");
+    (() => {
+        __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+        G = _classThis_1 = _classDescriptor_1.value;
+        __runInitializers(_classThis_1, _classExtraInitializers_1);
+    })();
+    return G = _classThis_1;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=es2022).js
new file mode 100644
index 0000000000000..03a366924a373
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=es2022).js
@@ -0,0 +1,265 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts] ////
+
+//// [file1.ts]
+declare var dec: any;
+
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() {}
+
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value: number) { }
+
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() {}
+
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value: number) { }
+
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+
+//// [file2.ts]
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+
+//// [file3.ts]
+/*40*/
+export
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+
+/*44*/
+export default
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
+
+
+//// [file1.js]
+/*1*/
+let C = (() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = class {
+        static { __setFunctionName(this, "C"); }
+        static { _method_get = function _method_get() { return _static_private_method_descriptor.value; }, _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); }, _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); }, _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); }, _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); }; }
+        static {
+            _method_decorators = [dec, dec];
+            _get_x_decorators = [dec, dec];
+            _set_x_decorators = [dec, dec];
+            _y_decorators = [dec, dec];
+            _z_decorators = [dec, dec];
+            _static_private_method_decorators = [dec, dec];
+            _static_private_get_x_decorators = [dec, dec];
+            _static_private_set_x_decorators = [dec, dec];
+            _static_private_y_decorators = [dec, dec];
+            _static_private_z_decorators = [dec, dec];
+            __esDecorate(this, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(this, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(this, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+            __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _staticExtraInitializers);
+        }
+        /*4*/
+        method() { }
+        /*7*/
+        get x() { return 1; }
+        /*10*/
+        set x(value) { }
+        /*13*/
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+        #z_accessor_storage = __runInitializers(this, _z_initializers, 1);
+        /*16*/
+        get z() { return this.#z_accessor_storage; }
+        set z(value) { this.#z_accessor_storage = value; }
+        static {
+            /*28*/
+            _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+        }
+        static {
+            _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
+//// [file2.js]
+/*34*/
+/*36*/
+export let D = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            D = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return D = _classThis;
+})();
+/*37*/
+export default (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var E = class {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            E = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return E = _classThis_1;
+})();
+//// [file3.js]
+/*40*/
+export let F = (() => {
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var F = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            F = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return F = _classThis;
+})();
+/*44*/
+export default (() => {
+    let _classDecorators_1 = [dec, dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var G = class {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            G = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return G = _classThis_1;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=esnext).js
new file mode 100644
index 0000000000000..d56f696134740
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-commentPreservation(module=esnext,target=esnext).js
@@ -0,0 +1,223 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts] ////
+
+//// [file1.ts]
+declare var dec: any;
+
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() {}
+
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value: number) { }
+
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() {}
+
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value: number) { }
+
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+
+//// [file2.ts]
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+
+//// [file3.ts]
+/*40*/
+export
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+
+/*44*/
+export default
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
+
+
+//// [file1.js]
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() { }
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value) { }
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() { }
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value) { }
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+//// [file2.js]
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+//// [file3.js]
+/*40*/
+export 
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+/*44*/
+export default 
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.errors.txt
new file mode 100644
index 0000000000000..e782ff4f31aa8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.errors.txt
@@ -0,0 +1,35 @@
+tests/cases/conformance/esDecorators/classDeclaration/file1.js(2,1): error TS8038: Decorators must come after 'export' or 'export default' in JavaScript files.
+tests/cases/conformance/esDecorators/classDeclaration/file2.js(2,1): error TS8038: Decorators must come after 'export' or 'export default' in JavaScript files.
+tests/cases/conformance/esDecorators/classDeclaration/file3.js(2,8): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/global.js (0 errors) ====
+    /** @type {*} */
+    var dec;
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/file1.js (1 errors) ====
+    // error
+    @dec export class C1 { }
+    ~~~~
+!!! error TS8038: Decorators must come after 'export' or 'export default' in JavaScript files.
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/file2.js (1 errors) ====
+    // error
+    @dec export default class C2 {}
+    ~~~~
+!!! error TS8038: Decorators must come after 'export' or 'export default' in JavaScript files.
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/file3.js (1 errors) ====
+    // error
+    export @dec default class C3 {}
+           ~~~~
+!!! error TS1206: Decorators are not valid here.
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/file4.js (0 errors) ====
+    // ok
+    export @dec class C4 {}
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/file5.js (0 errors) ====
+    // ok
+    export default @dec class C5 {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.symbols b/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.symbols
new file mode 100644
index 0000000000000..524fc5929e6c1
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.symbols
@@ -0,0 +1,35 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/global.js ===
+/** @type {*} */
+var dec;
+>dec : Symbol(dec, Decl(global.js, 1, 3))
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file1.js ===
+// error
+@dec export class C1 { }
+>dec : Symbol(dec, Decl(global.js, 1, 3))
+>C1 : Symbol(C1, Decl(file1.js, 0, 0))
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file2.js ===
+// error
+@dec export default class C2 {}
+>dec : Symbol(dec, Decl(global.js, 1, 3))
+>C2 : Symbol(C2, Decl(file2.js, 0, 0))
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file3.js ===
+// error
+export @dec default class C3 {}
+>dec : Symbol(dec, Decl(global.js, 1, 3))
+>C3 : Symbol(C3, Decl(file3.js, 0, 0))
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file4.js ===
+// ok
+export @dec class C4 {}
+>dec : Symbol(dec, Decl(global.js, 1, 3))
+>C4 : Symbol(C4, Decl(file4.js, 0, 0))
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file5.js ===
+// ok
+export default @dec class C5 {}
+>dec : Symbol(dec, Decl(global.js, 1, 3))
+>C5 : Symbol(C5, Decl(file5.js, 0, 0))
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.types b/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.types
new file mode 100644
index 0000000000000..ab0e682a437f0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-exportModifier.types
@@ -0,0 +1,35 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/global.js ===
+/** @type {*} */
+var dec;
+>dec : any
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file1.js ===
+// error
+@dec export class C1 { }
+>dec : any
+>C1 : C1
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file2.js ===
+// error
+@dec export default class C2 {}
+>dec : any
+>C2 : C2
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file3.js ===
+// error
+export @dec default class C3 {}
+>dec : any
+>C3 : C3
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file4.js ===
+// ok
+export @dec class C4 {}
+>dec : any
+>C4 : C4
+
+=== tests/cases/conformance/esDecorators/classDeclaration/file5.js ===
+// ok
+export default @dec class C5 {}
+>dec : any
+>C5 : C5
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2015,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2015,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..f22a1a91ef14e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2015,usedefineforclassfields=false).js
@@ -0,0 +1,42 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    var _b;
+    let _instanceExtraInitializers = [];
+    let _field1_decorators;
+    let _field1_initializers = [];
+    let _member_decorators;
+    let _member_initializers = [];
+    let _member_decorators_1;
+    let _member_initializers_1 = [];
+    return _a = class C {
+            constructor() {
+                this.field1 = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1));
+                this["field2"] = __runInitializers(this, _member_initializers, 2);
+                this[_b] = __runInitializers(this, _member_initializers_1, 3);
+            }
+        },
+        _field1_decorators = [dec(1)],
+        _member_decorators = [dec(2)],
+        _member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (() => {
+            __esDecorate(null, null, _field1_decorators, { kind: "field", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators, { kind: "field", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators_1, { kind: "field", name: _b, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2015,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2015,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..854f94797926f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2015,usedefineforclassfields=true).js
@@ -0,0 +1,57 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    var _b;
+    let _instanceExtraInitializers = [];
+    let _field1_decorators;
+    let _field1_initializers = [];
+    let _member_decorators;
+    let _member_initializers = [];
+    let _member_decorators_1;
+    let _member_initializers_1 = [];
+    return _a = class C {
+            constructor() {
+                Object.defineProperty(this, "field1", {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1))
+                });
+                Object.defineProperty(this, "field2", {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: __runInitializers(this, _member_initializers, 2)
+                });
+                Object.defineProperty(this, _b, {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: __runInitializers(this, _member_initializers_1, 3)
+                });
+            }
+        },
+        _field1_decorators = [dec(1)],
+        _member_decorators = [dec(2)],
+        _member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (() => {
+            __esDecorate(null, null, _field1_decorators, { kind: "field", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators, { kind: "field", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators_1, { kind: "field", name: _b, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2022,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2022,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..b99ccc2ea9ca8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2022,usedefineforclassfields=false).js
@@ -0,0 +1,37 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _field1_decorators;
+    let _field1_initializers = [];
+    let _member_decorators;
+    let _member_initializers = [];
+    let _member_decorators_1;
+    let _member_initializers_1 = [];
+    return class C {
+        constructor() {
+            this.field1 = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1));
+            this["field2"] = __runInitializers(this, _member_initializers, 2);
+            this[_a] = __runInitializers(this, _member_initializers_1, 3);
+        }
+        static { _field1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _a = __propKey(field3); }
+        static {
+            __esDecorate(null, null, _field1_decorators, { kind: "field", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators, { kind: "field", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators_1, { kind: "field", name: _a, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2022,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2022,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..f27d13c646f5a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es2022,usedefineforclassfields=true).js
@@ -0,0 +1,34 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _field1_decorators;
+    let _field1_initializers = [];
+    let _member_decorators;
+    let _member_initializers = [];
+    let _member_decorators_1;
+    let _member_initializers_1 = [];
+    return class C {
+        static {
+            __esDecorate(null, null, _field1_decorators, { kind: "field", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators, { kind: "field", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators_1, { kind: "field", name: _a, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        }
+        field1 = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1));
+        ["field2"] = __runInitializers(this, _member_initializers, 2);
+        [(_field1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _a = __propKey(field3))] = __runInitializers(this, _member_initializers_1, 3);
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es5,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es5,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..38398b531734a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es5,usedefineforclassfields=false).js
@@ -0,0 +1,43 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+var field3 = "field3";
+var C = function () {
+    var _a;
+    var _b;
+    var _instanceExtraInitializers = [];
+    var _field1_decorators;
+    var _field1_initializers = [];
+    var _member_decorators;
+    var _member_initializers = [];
+    var _member_decorators_1;
+    var _member_initializers_1 = [];
+    return _a = /** @class */ (function () {
+            function C() {
+                this.field1 = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1));
+                this["field2"] = __runInitializers(this, _member_initializers, 2);
+                this[_b] = __runInitializers(this, _member_initializers_1, 3);
+            }
+            return C;
+        }()),
+        _field1_decorators = [dec(1)],
+        _member_decorators = [dec(2)],
+        _member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (function () {
+            __esDecorate(null, null, _field1_decorators, { kind: "field", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators, { kind: "field", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators_1, { kind: "field", name: _b, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es5,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es5,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..9ce6940e998ae
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=es5,usedefineforclassfields=true).js
@@ -0,0 +1,58 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+var field3 = "field3";
+var C = function () {
+    var _a;
+    var _b;
+    var _instanceExtraInitializers = [];
+    var _field1_decorators;
+    var _field1_initializers = [];
+    var _member_decorators;
+    var _member_initializers = [];
+    var _member_decorators_1;
+    var _member_initializers_1 = [];
+    return _a = /** @class */ (function () {
+            function C() {
+                Object.defineProperty(this, "field1", {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1))
+                });
+                Object.defineProperty(this, "field2", {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: __runInitializers(this, _member_initializers, 2)
+                });
+                Object.defineProperty(this, _b, {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: __runInitializers(this, _member_initializers_1, 3)
+                });
+            }
+            return C;
+        }()),
+        _field1_decorators = [dec(1)],
+        _member_decorators = [dec(2)],
+        _member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (function () {
+            __esDecorate(null, null, _field1_decorators, { kind: "field", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators, { kind: "field", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators_1, { kind: "field", name: _b, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=esnext,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=esnext,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..b99ccc2ea9ca8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=esnext,usedefineforclassfields=false).js
@@ -0,0 +1,37 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _field1_decorators;
+    let _field1_initializers = [];
+    let _member_decorators;
+    let _member_initializers = [];
+    let _member_decorators_1;
+    let _member_initializers_1 = [];
+    return class C {
+        constructor() {
+            this.field1 = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1));
+            this["field2"] = __runInitializers(this, _member_initializers, 2);
+            this[_a] = __runInitializers(this, _member_initializers_1, 3);
+        }
+        static { _field1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _a = __propKey(field3); }
+        static {
+            __esDecorate(null, null, _field1_decorators, { kind: "field", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators, { kind: "field", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _member_decorators_1, { kind: "field", name: _a, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=esnext,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=esnext,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..32f2d7a3f9127
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStatic(target=esnext,usedefineforclassfields=true).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-fields-nonStatic.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStatic.js]
+const field3 = "field3";
+class C {
+    @dec(1)
+    field1 = 1;
+    @dec(2)
+    ["field2"] = 2;
+    @dec(3)
+    [field3] = 3;
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).errors.txt
new file mode 100644
index 0000000000000..e70b0b8398bfe
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    abstract class C {
+        @dec(1) abstract field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) abstract ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) abstract [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js
new file mode 100644
index 0000000000000..14e80d6d0bdef
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract field1: number;
+    @dec(2) abstract ["field2"]: number;
+    @dec(3) abstract [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).errors.txt
new file mode 100644
index 0000000000000..e70b0b8398bfe
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    abstract class C {
+        @dec(1) abstract field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) abstract ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) abstract [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js
new file mode 100644
index 0000000000000..14e80d6d0bdef
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract field1: number;
+    @dec(2) abstract ["field2"]: number;
+    @dec(3) abstract [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).errors.txt
new file mode 100644
index 0000000000000..e70b0b8398bfe
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    abstract class C {
+        @dec(1) abstract field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) abstract ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) abstract [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js
new file mode 100644
index 0000000000000..7845d48e7647b
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js
@@ -0,0 +1,19 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract field1: number;
+    @dec(2) abstract ["field2"]: number;
+    @dec(3) abstract [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
+var field3 = "field3";
+var C = /** @class */ (function () {
+    function C() {
+    }
+    return C;
+}());
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).errors.txt
new file mode 100644
index 0000000000000..e70b0b8398bfe
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    abstract class C {
+        @dec(1) abstract field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) abstract ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) abstract [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js
new file mode 100644
index 0000000000000..14e80d6d0bdef
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract field1: number;
+    @dec(2) abstract ["field2"]: number;
+    @dec(3) abstract [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).errors.txt
new file mode 100644
index 0000000000000..105be5795dce9
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    abstract class C {
+        @dec(1) abstract accessor field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) abstract accessor ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) abstract accessor [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js
new file mode 100644
index 0000000000000..70c3113ebb57e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract accessor field1: number;
+    @dec(2) abstract accessor ["field2"]: number;
+    @dec(3) abstract accessor [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).errors.txt
new file mode 100644
index 0000000000000..105be5795dce9
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    abstract class C {
+        @dec(1) abstract accessor field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) abstract accessor ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) abstract accessor [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js
new file mode 100644
index 0000000000000..70c3113ebb57e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract accessor field1: number;
+    @dec(2) abstract accessor ["field2"]: number;
+    @dec(3) abstract accessor [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).errors.txt
new file mode 100644
index 0000000000000..105be5795dce9
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    abstract class C {
+        @dec(1) abstract accessor field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) abstract accessor ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) abstract accessor [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js
new file mode 100644
index 0000000000000..70c3113ebb57e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract accessor field1: number;
+    @dec(2) abstract accessor ["field2"]: number;
+    @dec(3) abstract accessor [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=es2015).js
new file mode 100644
index 0000000000000..160556550ebbf
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=es2015).js
@@ -0,0 +1,44 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) accessor field1 = 1;
+    @dec(2) accessor ["field2"] = 2;
+    @dec(3) accessor [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAccessor.js]
+const field3 = "field3";
+let C = (() => {
+    var _a, _C_field1_accessor_storage, _C__a_accessor_storage, _C__b_accessor_storage;
+    var _b;
+    let _instanceExtraInitializers = [];
+    let _field1_decorators;
+    let _field1_initializers = [];
+    let _member_decorators;
+    let _member_initializers = [];
+    let _member_decorators_1;
+    let _member_initializers_1 = [];
+    return _a = class C {
+            constructor() {
+                _C_field1_accessor_storage.set(this, (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1)));
+                _C__a_accessor_storage.set(this, __runInitializers(this, _member_initializers, 2));
+                _C__b_accessor_storage.set(this, __runInitializers(this, _member_initializers_1, 3));
+            }
+            get field1() { return __classPrivateFieldGet(this, _C_field1_accessor_storage, "f"); }
+            set field1(value) { __classPrivateFieldSet(this, _C_field1_accessor_storage, value, "f"); }
+            get [(_C_field1_accessor_storage = new WeakMap(), _C__a_accessor_storage = new WeakMap(), _C__b_accessor_storage = new WeakMap(), "field2")]() { return __classPrivateFieldGet(this, _C__a_accessor_storage, "f"); }
+            set ["field2"](value) { __classPrivateFieldSet(this, _C__a_accessor_storage, value, "f"); }
+            get [(_field1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _b = __propKey(field3))]() { return __classPrivateFieldGet(this, _C__b_accessor_storage, "f"); }
+            set [_b](value) { __classPrivateFieldSet(this, _C__b_accessor_storage, value, "f"); }
+        },
+        (() => {
+            __esDecorate(_a, null, _field1_decorators, { kind: "accessor", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators, { kind: "accessor", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators_1, { kind: "accessor", name: _b, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=es2022).js
new file mode 100644
index 0000000000000..79311b7e3b2d3
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=es2022).js
@@ -0,0 +1,40 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) accessor field1 = 1;
+    @dec(2) accessor ["field2"] = 2;
+    @dec(3) accessor [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAccessor.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _field1_decorators;
+    let _field1_initializers = [];
+    let _member_decorators;
+    let _member_initializers = [];
+    let _member_decorators_1;
+    let _member_initializers_1 = [];
+    return class C {
+        static {
+            __esDecorate(this, null, _field1_decorators, { kind: "accessor", name: "field1", static: false, private: false }, _field1_initializers, _instanceExtraInitializers);
+            __esDecorate(this, null, _member_decorators, { kind: "accessor", name: "field2", static: false, private: false }, _member_initializers, _instanceExtraInitializers);
+            __esDecorate(this, null, _member_decorators_1, { kind: "accessor", name: _a, static: false, private: false }, _member_initializers_1, _instanceExtraInitializers);
+        }
+        #field1_accessor_storage = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _field1_initializers, 1));
+        get field1() { return this.#field1_accessor_storage; }
+        set field1(value) { this.#field1_accessor_storage = value; }
+        #_a_accessor_storage = __runInitializers(this, _member_initializers, 2);
+        get ["field2"]() { return this.#_a_accessor_storage; }
+        set ["field2"](value) { this.#_a_accessor_storage = value; }
+        #_b_accessor_storage = __runInitializers(this, _member_initializers_1, 3);
+        get [(_field1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _a = __propKey(field3))]() { return this.#_b_accessor_storage; }
+        set [_a](value) { this.#_b_accessor_storage = value; }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=esnext).js
new file mode 100644
index 0000000000000..b080f6abdd798
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAccessor(target=esnext).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) accessor field1 = 1;
+    @dec(2) accessor ["field2"] = 2;
+    @dec(3) accessor [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAccessor.js]
+const field3 = "field3";
+class C {
+    @dec(1)
+    accessor field1 = 1;
+    @dec(2)
+    accessor ["field2"] = 2;
+    @dec(3)
+    accessor [field3] = 3;
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2015).errors.txt
new file mode 100644
index 0000000000000..2aac382517ac2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2015).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) declare field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) declare ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) declare [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2015).js
new file mode 100644
index 0000000000000..8b5ce15c1b290
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2015).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) declare field1: number;
+    @dec(2) declare ["field2"]: number;
+    @dec(3) declare [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2022).errors.txt
new file mode 100644
index 0000000000000..2aac382517ac2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2022).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) declare field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) declare ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) declare [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2022).js
new file mode 100644
index 0000000000000..8b5ce15c1b290
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es2022).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) declare field1: number;
+    @dec(2) declare ["field2"]: number;
+    @dec(3) declare [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es5).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es5).errors.txt
new file mode 100644
index 0000000000000..2aac382517ac2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es5).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) declare field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) declare ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) declare [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es5).js
new file mode 100644
index 0000000000000..13821ee777d9f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=es5).js
@@ -0,0 +1,19 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) declare field1: number;
+    @dec(2) declare ["field2"]: number;
+    @dec(3) declare [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.js]
+var field3 = "field3";
+var C = /** @class */ (function () {
+    function C() {
+    }
+    return C;
+}());
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=esnext).errors.txt
new file mode 100644
index 0000000000000..2aac382517ac2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=esnext).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) declare field1: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) declare ["field2"]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) declare [field3]: number;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=esnext).js
new file mode 100644
index 0000000000000..8b5ce15c1b290
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticAmbient(target=esnext).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) declare field1: number;
+    @dec(2) declare ["field2"]: number;
+    @dec(3) declare [field3]: number;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticAmbient.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=es2015).js
new file mode 100644
index 0000000000000..bb512f1efc573
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=es2015).js
@@ -0,0 +1,26 @@
+//// [esDecorators-classDeclaration-fields-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec #field1 = 0;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticPrivate.js]
+let C = (() => {
+    var _C_field1, _a;
+    let _instanceExtraInitializers = [];
+    let _private_field1_decorators;
+    let _private_field1_initializers = [];
+    return _a = class C {
+            constructor() {
+                _C_field1.set(this, (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _private_field1_initializers, 0)));
+            }
+        },
+        _C_field1 = new WeakMap(),
+        (() => {
+            _private_field1_decorators = [dec];
+            __esDecorate(null, null, _private_field1_decorators, { kind: "field", name: "#field1", static: false, private: true }, _private_field1_initializers, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=es2022).js
new file mode 100644
index 0000000000000..493958c826520
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=es2022).js
@@ -0,0 +1,21 @@
+//// [esDecorators-classDeclaration-fields-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec #field1 = 0;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticPrivate.js]
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_field1_decorators;
+    let _private_field1_initializers = [];
+    return class C {
+        static {
+            _private_field1_decorators = [dec];
+            __esDecorate(null, null, _private_field1_decorators, { kind: "field", name: "#field1", static: false, private: true }, _private_field1_initializers, _instanceExtraInitializers);
+        }
+        #field1 = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _private_field1_initializers, 0));
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=esnext).js
new file mode 100644
index 0000000000000..5fe4f40e25afc
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivate(target=esnext).js
@@ -0,0 +1,13 @@
+//// [esDecorators-classDeclaration-fields-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec #field1 = 0;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticPrivate.js]
+class C {
+    @dec
+    #field1 = 0;
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=es2015).js
new file mode 100644
index 0000000000000..981d2c2a4766c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=es2015).js
@@ -0,0 +1,31 @@
+//// [esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.ts]
+declare let dec: any;
+
+class C {
+    @dec accessor #field1 = 0;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.js]
+let C = (() => {
+    var _C_instances, _a, _C_field1_accessor_storage, _C_field1_get, _C_field1_set;
+    let _instanceExtraInitializers = [];
+    let _private_field1_decorators;
+    let _private_field1_initializers = [];
+    let _private_field1_descriptor;
+    return _a = class C {
+            constructor() {
+                _C_instances.add(this);
+                _C_field1_accessor_storage.set(this, (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _private_field1_initializers, 0)));
+            }
+        },
+        _C_field1_accessor_storage = new WeakMap(),
+        _C_instances = new WeakSet(),
+        _C_field1_get = function _C_field1_get() { return _private_field1_descriptor.get.call(this); },
+        _C_field1_set = function _C_field1_set(value) { return _private_field1_descriptor.set.call(this, value); },
+        (() => {
+            _private_field1_decorators = [dec];
+            __esDecorate(_a, _private_field1_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(this, _C_field1_accessor_storage, "f"); }, "#field1", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(this, _C_field1_accessor_storage, value, "f"); }, "#field1", "set") }, _private_field1_decorators, { kind: "accessor", name: "#field1", static: false, private: true }, _private_field1_initializers, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=es2022).js
new file mode 100644
index 0000000000000..7ca74adec30ae
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=es2022).js
@@ -0,0 +1,24 @@
+//// [esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.ts]
+declare let dec: any;
+
+class C {
+    @dec accessor #field1 = 0;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.js]
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_field1_decorators;
+    let _private_field1_initializers = [];
+    let _private_field1_descriptor;
+    return class C {
+        static {
+            _private_field1_decorators = [dec];
+            __esDecorate(this, _private_field1_descriptor = { get: __setFunctionName(function () { return this.#field1_accessor_storage; }, "#field1", "get"), set: __setFunctionName(function (value) { this.#field1_accessor_storage = value; }, "#field1", "set") }, _private_field1_decorators, { kind: "accessor", name: "#field1", static: false, private: true }, _private_field1_initializers, _instanceExtraInitializers);
+        }
+        #field1_accessor_storage = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _private_field1_initializers, 0));
+        get #field1() { return _private_field1_descriptor.get.call(this); }
+        set #field1(value) { return _private_field1_descriptor.set.call(this, value); }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=esnext).js
new file mode 100644
index 0000000000000..269b8f73feea7
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor(target=esnext).js
@@ -0,0 +1,13 @@
+//// [esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.ts]
+declare let dec: any;
+
+class C {
+    @dec accessor #field1 = 0;
+}
+
+
+//// [esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.js]
+class C {
+    @dec
+    accessor #field1 = 0;
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2015,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2015,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..a0bb0d3149701
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2015,usedefineforclassfields=false).js
@@ -0,0 +1,41 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    var _b;
+    let _staticExtraInitializers = [];
+    let _static_field1_decorators;
+    let _static_field1_initializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    let _static_member_decorators_1;
+    let _static_member_initializers_1 = [];
+    return _a = class C {
+        },
+        _static_field1_decorators = [dec(1)],
+        _static_member_decorators = [dec(2)],
+        _static_member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (() => {
+            __esDecorate(null, null, _static_field1_decorators, { kind: "field", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators_1, { kind: "field", name: _b, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a.field1 = __runInitializers(_a, _static_field1_initializers, 1),
+        _a["field2"] = __runInitializers(_a, _static_member_initializers, 2),
+        _a[_b] = __runInitializers(_a, _static_member_initializers_1, 3),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2015,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2015,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..711ed976b469c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2015,usedefineforclassfields=true).js
@@ -0,0 +1,56 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    var _b;
+    let _staticExtraInitializers = [];
+    let _static_field1_decorators;
+    let _static_field1_initializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    let _static_member_decorators_1;
+    let _static_member_initializers_1 = [];
+    return _a = class C {
+        },
+        _static_field1_decorators = [dec(1)],
+        _static_member_decorators = [dec(2)],
+        _static_member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (() => {
+            __esDecorate(null, null, _static_field1_decorators, { kind: "field", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators_1, { kind: "field", name: _b, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        Object.defineProperty(_a, "field1", {
+            enumerable: true,
+            configurable: true,
+            writable: true,
+            value: __runInitializers(_a, _static_field1_initializers, 1)
+        }),
+        Object.defineProperty(_a, "field2", {
+            enumerable: true,
+            configurable: true,
+            writable: true,
+            value: __runInitializers(_a, _static_member_initializers, 2)
+        }),
+        Object.defineProperty(_a, _b, {
+            enumerable: true,
+            configurable: true,
+            writable: true,
+            value: __runInitializers(_a, _static_member_initializers_1, 3)
+        }),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2022,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2022,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..9ce6c3f314551
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2022,usedefineforclassfields=false).js
@@ -0,0 +1,36 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_field1_decorators;
+    let _static_field1_initializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    let _static_member_decorators_1;
+    let _static_member_initializers_1 = [];
+    return class C {
+        static { _static_field1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _a = __propKey(field3); }
+        static {
+            __esDecorate(null, null, _static_field1_decorators, { kind: "field", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators_1, { kind: "field", name: _a, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static { this.field1 = __runInitializers(this, _static_field1_initializers, 1); }
+        static { this["field2"] = __runInitializers(this, _static_member_initializers, 2); }
+        static { this[_a] = __runInitializers(this, _static_member_initializers_1, 3); }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2022,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2022,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..4ec5391109d13
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es2022,usedefineforclassfields=true).js
@@ -0,0 +1,35 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_field1_decorators;
+    let _static_field1_initializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    let _static_member_decorators_1;
+    let _static_member_initializers_1 = [];
+    return class C {
+        static {
+            __esDecorate(null, null, _static_field1_decorators, { kind: "field", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators_1, { kind: "field", name: _a, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static field1 = __runInitializers(this, _static_field1_initializers, 1);
+        static ["field2"] = __runInitializers(this, _static_member_initializers, 2);
+        static [(_static_field1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _a = __propKey(field3))] = __runInitializers(this, _static_member_initializers_1, 3);
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es5,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es5,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..7a258c040bd4d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es5,usedefineforclassfields=false).js
@@ -0,0 +1,45 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+var _this = this;
+var field3 = "field3";
+var C = function () {
+    var _a;
+    var _b;
+    var _staticExtraInitializers = [];
+    var _static_field1_decorators;
+    var _static_field1_initializers = [];
+    var _static_member_decorators;
+    var _static_member_initializers = [];
+    var _static_member_decorators_1;
+    var _static_member_initializers_1 = [];
+    return _a = /** @class */ (function () {
+            function C() {
+            }
+            return C;
+        }()),
+        _static_field1_decorators = [dec(1)],
+        _static_member_decorators = [dec(2)],
+        _static_member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (function () {
+            __esDecorate(null, null, _static_field1_decorators, { kind: "field", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators_1, { kind: "field", name: _b, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a.field1 = __runInitializers(_a, _static_field1_initializers, 1),
+        _a["field2"] = __runInitializers(_a, _static_member_initializers, 2),
+        _a[_b] = __runInitializers(_a, _static_member_initializers_1, 3),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es5,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es5,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..737799426118d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=es5,usedefineforclassfields=true).js
@@ -0,0 +1,60 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+var _this = this;
+var field3 = "field3";
+var C = function () {
+    var _a;
+    var _b;
+    var _staticExtraInitializers = [];
+    var _static_field1_decorators;
+    var _static_field1_initializers = [];
+    var _static_member_decorators;
+    var _static_member_initializers = [];
+    var _static_member_decorators_1;
+    var _static_member_initializers_1 = [];
+    return _a = /** @class */ (function () {
+            function C() {
+            }
+            return C;
+        }()),
+        _static_field1_decorators = [dec(1)],
+        _static_member_decorators = [dec(2)],
+        _static_member_decorators_1 = [dec(3)],
+        _b = __propKey(field3),
+        (function () {
+            __esDecorate(null, null, _static_field1_decorators, { kind: "field", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators_1, { kind: "field", name: _b, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        Object.defineProperty(_a, "field1", {
+            enumerable: true,
+            configurable: true,
+            writable: true,
+            value: __runInitializers(_a, _static_field1_initializers, 1)
+        }),
+        Object.defineProperty(_a, "field2", {
+            enumerable: true,
+            configurable: true,
+            writable: true,
+            value: __runInitializers(_a, _static_member_initializers, 2)
+        }),
+        Object.defineProperty(_a, _b, {
+            enumerable: true,
+            configurable: true,
+            writable: true,
+            value: __runInitializers(_a, _static_member_initializers_1, 3)
+        }),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=esnext,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=esnext,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..9ce6c3f314551
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=esnext,usedefineforclassfields=false).js
@@ -0,0 +1,36 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_field1_decorators;
+    let _static_field1_initializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    let _static_member_decorators_1;
+    let _static_member_initializers_1 = [];
+    return class C {
+        static { _static_field1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _a = __propKey(field3); }
+        static {
+            __esDecorate(null, null, _static_field1_decorators, { kind: "field", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators, { kind: "field", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _static_member_decorators_1, { kind: "field", name: _a, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static { this.field1 = __runInitializers(this, _static_field1_initializers, 1); }
+        static { this["field2"] = __runInitializers(this, _static_member_initializers, 2); }
+        static { this[_a] = __runInitializers(this, _static_member_initializers_1, 3); }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=esnext,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=esnext,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..1d6d9881a7512
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-static(target=esnext,usedefineforclassfields=true).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-fields-static.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-static.js]
+const field3 = "field3";
+class C {
+    @dec(1)
+    static field1 = 1;
+    @dec(2)
+    static ["field2"] = 2;
+    @dec(3)
+    static [field3] = 3;
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=es2015).js
new file mode 100644
index 0000000000000..a6cf58ab3384c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=es2015).js
@@ -0,0 +1,76 @@
+//// [esDecorators-classDeclaration-fields-staticAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static accessor field1 = 1;
+    @dec(2) static accessor ["field2"] = 2;
+    @dec(3) static accessor [field3] = 3;
+}
+
+@dec
+class D {
+    static accessor field1 = 1;
+    static {
+        this.field1;
+        this.field1 = 1;
+    }
+}
+
+//// [esDecorators-classDeclaration-fields-staticAccessor.js]
+const field3 = "field3";
+let C = (() => {
+    var _a, _C_field1_accessor_storage, _C__a_accessor_storage, _C__b_accessor_storage;
+    var _b;
+    let _staticExtraInitializers = [];
+    let _static_field1_decorators;
+    let _static_field1_initializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    let _static_member_decorators_1;
+    let _static_member_initializers_1 = [];
+    return _a = class C {
+            static get field1() { return __classPrivateFieldGet(_a, _a, "f", _C_field1_accessor_storage); }
+            static set field1(value) { __classPrivateFieldSet(_a, _a, value, "f", _C_field1_accessor_storage); }
+            static get ["field2"]() { return __classPrivateFieldGet(_a, _a, "f", _C__a_accessor_storage); }
+            static set ["field2"](value) { __classPrivateFieldSet(_a, _a, value, "f", _C__a_accessor_storage); }
+            static get [(_static_field1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _b = __propKey(field3))]() { return __classPrivateFieldGet(_a, _a, "f", _C__b_accessor_storage); }
+            static set [_b](value) { __classPrivateFieldSet(_a, _a, value, "f", _C__b_accessor_storage); }
+        },
+        (() => {
+            __esDecorate(_a, null, _static_field1_decorators, { kind: "accessor", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_member_decorators, { kind: "accessor", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_member_decorators_1, { kind: "accessor", name: _b, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _C_field1_accessor_storage = { value: __runInitializers(_a, _static_field1_initializers, 1) },
+        _C__a_accessor_storage = { value: __runInitializers(_a, _static_member_initializers, 2) },
+        _C__b_accessor_storage = { value: __runInitializers(_a, _static_member_initializers_1, 3) },
+        _a;
+})();
+let D = (() => {
+    var _field1_accessor_storage;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = _classThis = class {
+        static get field1() { return __classPrivateFieldGet(_classThis, _classThis, "f", _field1_accessor_storage); }
+        static set field1(value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _field1_accessor_storage); }
+    };
+    __setFunctionName(_classThis, "D");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        D = _classThis = _classDescriptor.value;
+    })();
+    _field1_accessor_storage = { value: 1 };
+    (() => {
+        _classThis.field1;
+        _classThis.field1 = 1;
+    })();
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=es2022).js
new file mode 100644
index 0000000000000..f922fb0911eb8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=es2022).js
@@ -0,0 +1,76 @@
+//// [esDecorators-classDeclaration-fields-staticAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static accessor field1 = 1;
+    @dec(2) static accessor ["field2"] = 2;
+    @dec(3) static accessor [field3] = 3;
+}
+
+@dec
+class D {
+    static accessor field1 = 1;
+    static {
+        this.field1;
+        this.field1 = 1;
+    }
+}
+
+//// [esDecorators-classDeclaration-fields-staticAccessor.js]
+const field3 = "field3";
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_field1_decorators;
+    let _static_field1_initializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    let _static_member_decorators_1;
+    let _static_member_initializers_1 = [];
+    return class C {
+        static {
+            __esDecorate(this, null, _static_field1_decorators, { kind: "accessor", name: "field1", static: true, private: false }, _static_field1_initializers, _staticExtraInitializers);
+            __esDecorate(this, null, _static_member_decorators, { kind: "accessor", name: "field2", static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            __esDecorate(this, null, _static_member_decorators_1, { kind: "accessor", name: _a, static: true, private: false }, _static_member_initializers_1, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static #field1_accessor_storage = __runInitializers(this, _static_field1_initializers, 1);
+        static get field1() { return this.#field1_accessor_storage; }
+        static set field1(value) { this.#field1_accessor_storage = value; }
+        static #_a_accessor_storage = __runInitializers(this, _static_member_initializers, 2);
+        static get ["field2"]() { return this.#_a_accessor_storage; }
+        static set ["field2"](value) { this.#_a_accessor_storage = value; }
+        static #_b_accessor_storage = __runInitializers(this, _static_member_initializers_1, 3);
+        static get [(_static_field1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _a = __propKey(field3))]() { return this.#_b_accessor_storage; }
+        static set [_a](value) { this.#_b_accessor_storage = value; }
+    };
+})();
+let D = (() => {
+    var _field1_accessor_storage;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = class {
+        static { __setFunctionName(this, "D"); }
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            D = _classThis = _classDescriptor.value;
+        }
+        static {
+            _field1_accessor_storage = { value: 1 };
+        }
+        static get field1() { return __classPrivateFieldGet(this, _classThis, "f", _field1_accessor_storage); }
+        static set field1(value) { __classPrivateFieldSet(this, _classThis, value, "f", _field1_accessor_storage); }
+        static {
+            _classThis.field1;
+            _classThis.field1 = 1;
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=esnext).js
new file mode 100644
index 0000000000000..d4c76162f914f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAccessor(target=esnext).js
@@ -0,0 +1,38 @@
+//// [esDecorators-classDeclaration-fields-staticAccessor.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static accessor field1 = 1;
+    @dec(2) static accessor ["field2"] = 2;
+    @dec(3) static accessor [field3] = 3;
+}
+
+@dec
+class D {
+    static accessor field1 = 1;
+    static {
+        this.field1;
+        this.field1 = 1;
+    }
+}
+
+//// [esDecorators-classDeclaration-fields-staticAccessor.js]
+const field3 = "field3";
+class C {
+    @dec(1)
+    static accessor field1 = 1;
+    @dec(2)
+    static accessor ["field2"] = 2;
+    @dec(3)
+    static accessor [field3] = 3;
+}
+@dec
+class D {
+    static accessor field1 = 1;
+    static {
+        this.field1;
+        this.field1 = 1;
+    }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2015).errors.txt
new file mode 100644
index 0000000000000..07b48d6189ab6
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2015).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) static declare field1 = 1;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) static declare ["field2"] = 2;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) static declare [field3] = 3;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2015).js
new file mode 100644
index 0000000000000..36697eb3f8b5f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2015).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-staticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static declare field1 = 1;
+    @dec(2) static declare ["field2"] = 2;
+    @dec(3) static declare [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticAmbient.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2022).errors.txt
new file mode 100644
index 0000000000000..07b48d6189ab6
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2022).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) static declare field1 = 1;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) static declare ["field2"] = 2;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) static declare [field3] = 3;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2022).js
new file mode 100644
index 0000000000000..36697eb3f8b5f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es2022).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-staticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static declare field1 = 1;
+    @dec(2) static declare ["field2"] = 2;
+    @dec(3) static declare [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticAmbient.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es5).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es5).errors.txt
new file mode 100644
index 0000000000000..07b48d6189ab6
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es5).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) static declare field1 = 1;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) static declare ["field2"] = 2;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) static declare [field3] = 3;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es5).js
new file mode 100644
index 0000000000000..60006b6666e2e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=es5).js
@@ -0,0 +1,19 @@
+//// [esDecorators-classDeclaration-fields-staticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static declare field1 = 1;
+    @dec(2) static declare ["field2"] = 2;
+    @dec(3) static declare [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticAmbient.js]
+var field3 = "field3";
+var C = /** @class */ (function () {
+    function C() {
+    }
+    return C;
+}());
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=esnext).errors.txt
new file mode 100644
index 0000000000000..07b48d6189ab6
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=esnext).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(6,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(7,5): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts(8,5): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts (3 errors) ====
+    declare let dec: any;
+    
+    const field3 = "field3";
+    
+    class C {
+        @dec(1) static declare field1 = 1;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(2) static declare ["field2"] = 2;
+        ~
+!!! error TS1206: Decorators are not valid here.
+        @dec(3) static declare [field3] = 3;
+        ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=esnext).js
new file mode 100644
index 0000000000000..36697eb3f8b5f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticAmbient(target=esnext).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-fields-staticAmbient.ts]
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static declare field1 = 1;
+    @dec(2) static declare ["field2"] = 2;
+    @dec(3) static declare [field3] = 3;
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticAmbient.js]
+const field3 = "field3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=es2015).js
new file mode 100644
index 0000000000000..253a7a5e698b8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=es2015).js
@@ -0,0 +1,56 @@
+//// [esDecorators-classDeclaration-fields-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec static #field1 = 0;
+}
+
+@dec
+class D {
+    static #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticPrivate.js]
+let C = (() => {
+    var _a, _C_field1;
+    let _staticExtraInitializers = [];
+    let _static_private_field1_decorators;
+    let _static_private_field1_initializers = [];
+    return _a = class C {
+        },
+        (() => {
+            _static_private_field1_decorators = [dec];
+            __esDecorate(null, null, _static_private_field1_decorators, { kind: "field", name: "#field1", static: true, private: true }, _static_private_field1_initializers, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _C_field1 = { value: __runInitializers(_a, _static_private_field1_initializers, 0) },
+        _a;
+})();
+let D = (() => {
+    var _field1;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = _classThis = class {
+    };
+    __setFunctionName(_classThis, "D");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        D = _classThis = _classDescriptor.value;
+    })();
+    _field1 = { value: 0 };
+    (() => {
+        __classPrivateFieldGet(_classThis, _classThis, "f", _field1);
+        __classPrivateFieldSet(_classThis, _classThis, 1, "f", _field1);
+    })();
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=es2022).js
new file mode 100644
index 0000000000000..d59953d89857c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=es2022).js
@@ -0,0 +1,56 @@
+//// [esDecorators-classDeclaration-fields-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec static #field1 = 0;
+}
+
+@dec
+class D {
+    static #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticPrivate.js]
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_field1_decorators;
+    let _static_private_field1_initializers = [];
+    return class C {
+        static {
+            _static_private_field1_decorators = [dec];
+            __esDecorate(null, null, _static_private_field1_decorators, { kind: "field", name: "#field1", static: true, private: true }, _static_private_field1_initializers, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static #field1 = __runInitializers(this, _static_private_field1_initializers, 0);
+    };
+})();
+let D = (() => {
+    var _field1;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = class {
+        static { __setFunctionName(this, "D"); }
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            D = _classThis = _classDescriptor.value;
+        }
+        static {
+            _field1 = { value: 0 };
+        }
+        static {
+            __classPrivateFieldGet(_classThis, _classThis, "f", _field1);
+            __classPrivateFieldSet(_classThis, _classThis, 1, "f", _field1);
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=esnext).js
new file mode 100644
index 0000000000000..4f7ea0b8285f8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivate(target=esnext).js
@@ -0,0 +1,30 @@
+//// [esDecorators-classDeclaration-fields-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec static #field1 = 0;
+}
+
+@dec
+class D {
+    static #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticPrivate.js]
+class C {
+    @dec
+    static #field1 = 0;
+}
+@dec
+class D {
+    static #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=es2015).js
new file mode 100644
index 0000000000000..37e8d5b45d47f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=es2015).js
@@ -0,0 +1,61 @@
+//// [esDecorators-classDeclaration-fields-staticPrivateAccessor.ts]
+declare let dec: any;
+
+class C {
+    @dec static accessor #field1 = 0;
+}
+
+@dec
+class D {
+    static accessor #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticPrivateAccessor.js]
+let C = (() => {
+    var _a, _C_field1_accessor_storage, _C_field1_get, _C_field1_set;
+    let _staticExtraInitializers = [];
+    let _static_private_field1_decorators;
+    let _static_private_field1_initializers = [];
+    let _static_private_field1_descriptor;
+    return _a = class C {
+        },
+        _C_field1_get = function _C_field1_get() { return _static_private_field1_descriptor.get.call(this); },
+        _C_field1_set = function _C_field1_set(value) { return _static_private_field1_descriptor.set.call(this, value); },
+        (() => {
+            _static_private_field1_decorators = [dec];
+            __esDecorate(_a, _static_private_field1_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(_a, _a, "f", _C_field1_accessor_storage); }, "#field1", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(_a, _a, value, "f", _C_field1_accessor_storage); }, "#field1", "set") }, _static_private_field1_decorators, { kind: "accessor", name: "#field1", static: true, private: true }, _static_private_field1_initializers, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _C_field1_accessor_storage = { value: __runInitializers(this, _static_private_field1_initializers, 0) },
+        _a;
+})();
+let D = (() => {
+    var _field1_get, _field1_set, _field1_accessor_storage;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = _classThis = class {
+    };
+    _field1_get = function _field1_get() { return __classPrivateFieldGet(this, _classThis, "f", _field1_accessor_storage); };
+    _field1_set = function _field1_set(value) { __classPrivateFieldSet(this, _classThis, value, "f", _field1_accessor_storage); };
+    __setFunctionName(_classThis, "D");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        D = _classThis = _classDescriptor.value;
+    })();
+    _field1_accessor_storage = { value: 0 };
+    (() => {
+        __classPrivateFieldGet(_classThis, _classThis, "a", _field1_get);
+        __classPrivateFieldSet(_classThis, _classThis, 1, "a", _field1_set);
+    })();
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=es2022).js
new file mode 100644
index 0000000000000..af38ad7b02c88
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=es2022).js
@@ -0,0 +1,60 @@
+//// [esDecorators-classDeclaration-fields-staticPrivateAccessor.ts]
+declare let dec: any;
+
+class C {
+    @dec static accessor #field1 = 0;
+}
+
+@dec
+class D {
+    static accessor #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticPrivateAccessor.js]
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_field1_decorators;
+    let _static_private_field1_initializers = [];
+    let _static_private_field1_descriptor;
+    return class C {
+        static {
+            _static_private_field1_decorators = [dec];
+            __esDecorate(this, _static_private_field1_descriptor = { get: __setFunctionName(function () { return this.#field1_accessor_storage; }, "#field1", "get"), set: __setFunctionName(function (value) { this.#field1_accessor_storage = value; }, "#field1", "set") }, _static_private_field1_decorators, { kind: "accessor", name: "#field1", static: true, private: true }, _static_private_field1_initializers, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static #field1_accessor_storage = __runInitializers(this, _static_private_field1_initializers, 0);
+        static get #field1() { return _static_private_field1_descriptor.get.call(this); }
+        static set #field1(value) { return _static_private_field1_descriptor.set.call(this, value); }
+    };
+})();
+let D = (() => {
+    var _field1_get, _field1_set, _field1_accessor_storage;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = class {
+        static { __setFunctionName(this, "D"); }
+        static { _field1_get = function _field1_get() { return __classPrivateFieldGet(this, _classThis, "f", _field1_accessor_storage); }, _field1_set = function _field1_set(value) { __classPrivateFieldSet(this, _classThis, value, "f", _field1_accessor_storage); }; }
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            D = _classThis = _classDescriptor.value;
+        }
+        static {
+            _field1_accessor_storage = { value: 0 };
+        }
+        static {
+            __classPrivateFieldGet(_classThis, _classThis, "a", _field1_get);
+            __classPrivateFieldSet(_classThis, _classThis, 1, "a", _field1_set);
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=esnext).js
new file mode 100644
index 0000000000000..34957f5c432fe
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-fields-staticPrivateAccessor(target=esnext).js
@@ -0,0 +1,30 @@
+//// [esDecorators-classDeclaration-fields-staticPrivateAccessor.ts]
+declare let dec: any;
+
+class C {
+    @dec static accessor #field1 = 0;
+}
+
+@dec
+class D {
+    static accessor #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
+
+
+//// [esDecorators-classDeclaration-fields-staticPrivateAccessor.js]
+class C {
+    @dec
+    static accessor #field1 = 0;
+}
+@dec
+class D {
+    static accessor #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es2015).js
new file mode 100644
index 0000000000000..b0d2cf0df399f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es2015).js
@@ -0,0 +1,36 @@
+//// [esDecorators-classDeclaration-methods-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) method1() {}
+    @dec(2) ["method2"]() {}
+    @dec(3) [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStatic.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    var _b;
+    let _instanceExtraInitializers = [];
+    let _method1_decorators;
+    let _member_decorators;
+    let _member_decorators_1;
+    return _a = class C {
+            method1() { }
+            ["method2"]() { }
+            [(_method1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _b = __propKey(method3))]() { }
+            constructor() {
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+        },
+        (() => {
+            __esDecorate(_a, null, _method1_decorators, { kind: "method", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators, { kind: "method", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators_1, { kind: "method", name: _b, static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es2022).js
new file mode 100644
index 0000000000000..022592aa5b56b
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es2022).js
@@ -0,0 +1,34 @@
+//// [esDecorators-classDeclaration-methods-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) method1() {}
+    @dec(2) ["method2"]() {}
+    @dec(3) [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStatic.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _method1_decorators;
+    let _member_decorators;
+    let _member_decorators_1;
+    return class C {
+        static {
+            __esDecorate(this, null, _method1_decorators, { kind: "method", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _member_decorators, { kind: "method", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _member_decorators_1, { kind: "method", name: _a, static: false, private: false }, null, _instanceExtraInitializers);
+        }
+        method1() { }
+        ["method2"]() { }
+        [(_method1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _a = __propKey(method3))]() { }
+        constructor() {
+            __runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es5).js
new file mode 100644
index 0000000000000..bd3eb8e0a7741
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=es5).js
@@ -0,0 +1,38 @@
+//// [esDecorators-classDeclaration-methods-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) method1() {}
+    @dec(2) ["method2"]() {}
+    @dec(3) [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStatic.js]
+var _this = this;
+var method3 = "method3";
+var C = function () {
+    var _a;
+    var _b;
+    var _instanceExtraInitializers = [];
+    var _method1_decorators;
+    var _member_decorators;
+    var _member_decorators_1;
+    return _a = /** @class */ (function () {
+            function C() {
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+            C.prototype.method1 = function () { };
+            C.prototype["method2"] = function () { };
+            C.prototype[(_method1_decorators = [dec(1)], _member_decorators = [dec(2)], _member_decorators_1 = [dec(3)], _b = __propKey(method3))] = function () { };
+            return C;
+        }()),
+        (function () {
+            __esDecorate(_a, null, _method1_decorators, { kind: "method", name: "method1", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators, { kind: "method", name: "method2", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators_1, { kind: "method", name: _b, static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=esnext).js
new file mode 100644
index 0000000000000..c97983d5a60a2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStatic(target=esnext).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-methods-nonStatic.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) method1() {}
+    @dec(2) ["method2"]() {}
+    @dec(3) [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStatic.js]
+const method3 = "method3";
+class C {
+    @dec(1)
+    method1() { }
+    @dec(2)
+    ["method2"]() { }
+    @dec(3)
+    [method3]() { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2015).errors.txt
new file mode 100644
index 0000000000000..d924ddceb821f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2015).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(6,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(7,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(8,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(1) abstract method1(): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(2) abstract ["method2"](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(3) abstract [method3](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2015).js
new file mode 100644
index 0000000000000..b408db0e0e6da
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2015).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(1) abstract method1(): void;
+    @dec(2) abstract ["method2"](): void;
+    @dec(3) abstract [method3](): void;
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.js]
+const method3 = "method3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2022).errors.txt
new file mode 100644
index 0000000000000..d924ddceb821f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2022).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(6,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(7,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(8,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(1) abstract method1(): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(2) abstract ["method2"](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(3) abstract [method3](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2022).js
new file mode 100644
index 0000000000000..b408db0e0e6da
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es2022).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(1) abstract method1(): void;
+    @dec(2) abstract ["method2"](): void;
+    @dec(3) abstract [method3](): void;
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.js]
+const method3 = "method3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es5).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es5).errors.txt
new file mode 100644
index 0000000000000..d924ddceb821f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es5).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(6,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(7,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(8,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(1) abstract method1(): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(2) abstract ["method2"](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(3) abstract [method3](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es5).js
new file mode 100644
index 0000000000000..4f34c59c10870
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=es5).js
@@ -0,0 +1,19 @@
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(1) abstract method1(): void;
+    @dec(2) abstract ["method2"](): void;
+    @dec(3) abstract [method3](): void;
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.js]
+var method3 = "method3";
+var C = /** @class */ (function () {
+    function C() {
+    }
+    return C;
+}());
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=esnext).errors.txt
new file mode 100644
index 0000000000000..d924ddceb821f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=esnext).errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(6,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(7,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts(8,5): error TS1249: A decorator can only decorate a method implementation, not an overload.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts (3 errors) ====
+    declare let dec: any;
+    
+    const method3 = "method3";
+    
+    abstract class C {
+        @dec(1) abstract method1(): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(2) abstract ["method2"](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+        @dec(3) abstract [method3](): void;
+        ~
+!!! error TS1249: A decorator can only decorate a method implementation, not an overload.
+    }
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=esnext).js
new file mode 100644
index 0000000000000..b408db0e0e6da
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticAbstract(target=esnext).js
@@ -0,0 +1,16 @@
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(1) abstract method1(): void;
+    @dec(2) abstract ["method2"](): void;
+    @dec(3) abstract [method3](): void;
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStaticAbstract.js]
+const method3 = "method3";
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=es2015).js
new file mode 100644
index 0000000000000..cf01e7489ce89
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=es2015).js
@@ -0,0 +1,28 @@
+//// [esDecorators-classDeclaration-methods-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec #method1() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStaticPrivate.js]
+let C = (() => {
+    var _C_instances, _a, _C_method1_get;
+    let _instanceExtraInitializers = [];
+    let _private_method1_decorators;
+    let _private_method1_descriptor;
+    return _a = class C {
+            constructor() {
+                _C_instances.add(this);
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+        },
+        _C_instances = new WeakSet(),
+        _C_method1_get = function _C_method1_get() { return _private_method1_descriptor.value; },
+        (() => {
+            _private_method1_decorators = [dec];
+            __esDecorate(_a, _private_method1_descriptor = { value: __setFunctionName(function () { }, "#method1") }, _private_method1_decorators, { kind: "method", name: "#method1", static: false, private: true }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=es2022).js
new file mode 100644
index 0000000000000..f2fe7f5374fad
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=es2022).js
@@ -0,0 +1,24 @@
+//// [esDecorators-classDeclaration-methods-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec #method1() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStaticPrivate.js]
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_method1_decorators;
+    let _private_method1_descriptor;
+    return class C {
+        static {
+            _private_method1_decorators = [dec];
+            __esDecorate(this, _private_method1_descriptor = { value: __setFunctionName(function () { }, "#method1") }, _private_method1_decorators, { kind: "method", name: "#method1", static: false, private: true }, null, _instanceExtraInitializers);
+        }
+        get #method1() { return _private_method1_descriptor.value; }
+        constructor() {
+            __runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=esnext).js
new file mode 100644
index 0000000000000..84caf1e1139ba
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-nonStaticPrivate(target=esnext).js
@@ -0,0 +1,13 @@
+//// [esDecorators-classDeclaration-methods-nonStaticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec #method1() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-nonStaticPrivate.js]
+class C {
+    @dec
+    #method1() { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es2015).js
new file mode 100644
index 0000000000000..e4a3864b3a685
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es2015).js
@@ -0,0 +1,34 @@
+//// [esDecorators-classDeclaration-methods-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) static method1() {}
+    @dec(2) static ["method2"]() {}
+    @dec(3) static [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-static.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    var _b;
+    let _staticExtraInitializers = [];
+    let _static_method1_decorators;
+    let _static_member_decorators;
+    let _static_member_decorators_1;
+    return _a = class C {
+            static method1() { }
+            static ["method2"]() { }
+            static [(_static_method1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _b = __propKey(method3))]() { }
+        },
+        (() => {
+            __esDecorate(_a, null, _static_method1_decorators, { kind: "method", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_member_decorators, { kind: "method", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_member_decorators_1, { kind: "method", name: _b, static: true, private: false }, null, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es2022).js
new file mode 100644
index 0000000000000..619ffd32039ba
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es2022).js
@@ -0,0 +1,32 @@
+//// [esDecorators-classDeclaration-methods-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) static method1() {}
+    @dec(2) static ["method2"]() {}
+    @dec(3) static [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-static.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_method1_decorators;
+    let _static_member_decorators;
+    let _static_member_decorators_1;
+    return class C {
+        static {
+            __esDecorate(this, null, _static_method1_decorators, { kind: "method", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_member_decorators, { kind: "method", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_member_decorators_1, { kind: "method", name: _a, static: true, private: false }, null, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static method1() { }
+        static ["method2"]() { }
+        static [(_static_method1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _a = __propKey(method3))]() { }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es5).js
new file mode 100644
index 0000000000000..9b784e8d41973
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=es5).js
@@ -0,0 +1,38 @@
+//// [esDecorators-classDeclaration-methods-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) static method1() {}
+    @dec(2) static ["method2"]() {}
+    @dec(3) static [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-static.js]
+var _this = this;
+var method3 = "method3";
+var C = function () {
+    var _a;
+    var _b;
+    var _staticExtraInitializers = [];
+    var _static_method1_decorators;
+    var _static_member_decorators;
+    var _static_member_decorators_1;
+    return _a = /** @class */ (function () {
+            function C() {
+            }
+            C.method1 = function () { };
+            C["method2"] = function () { };
+            C[(_static_method1_decorators = [dec(1)], _static_member_decorators = [dec(2)], _static_member_decorators_1 = [dec(3)], _b = __propKey(method3))] = function () { };
+            return C;
+        }()),
+        (function () {
+            __esDecorate(_a, null, _static_method1_decorators, { kind: "method", name: "method1", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_member_decorators, { kind: "method", name: "method2", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(_a, null, _static_member_decorators_1, { kind: "method", name: _b, static: true, private: false }, null, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=esnext).js
new file mode 100644
index 0000000000000..61a37f8533c27
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-static(target=esnext).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-methods-static.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) static method1() {}
+    @dec(2) static ["method2"]() {}
+    @dec(3) static [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-static.js]
+const method3 = "method3";
+class C {
+    @dec(1)
+    static method1() { }
+    @dec(2)
+    static ["method2"]() { }
+    @dec(3)
+    static [method3]() { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=es2015).js
new file mode 100644
index 0000000000000..4e6137f0bbd2f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=es2015).js
@@ -0,0 +1,46 @@
+//// [esDecorators-classDeclaration-methods-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec static #method1() {}
+}
+
+@dec
+class D {
+    static #method1() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-staticPrivate.js]
+let C = (() => {
+    var _a, _C_method1_get;
+    let _staticExtraInitializers = [];
+    let _static_private_method1_decorators;
+    let _static_private_method1_descriptor;
+    return _a = class C {
+        },
+        _C_method1_get = function _C_method1_get() { return _static_private_method1_descriptor.value; },
+        (() => {
+            _static_private_method1_decorators = [dec];
+            __esDecorate(_a, _static_private_method1_descriptor = { value: __setFunctionName(function () { }, "#method1") }, _static_private_method1_decorators, { kind: "method", name: "#method1", static: true, private: true }, null, _staticExtraInitializers);
+            __runInitializers(_a, _staticExtraInitializers);
+        })(),
+        _a;
+})();
+let D = (() => {
+    var _method1;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = _classThis = class {
+    };
+    _method1 = function _method1() { };
+    __setFunctionName(_classThis, "D");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        D = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=es2022).js
new file mode 100644
index 0000000000000..ff852e59e2899
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=es2022).js
@@ -0,0 +1,44 @@
+//// [esDecorators-classDeclaration-methods-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec static #method1() {}
+}
+
+@dec
+class D {
+    static #method1() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-staticPrivate.js]
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_method1_decorators;
+    let _static_private_method1_descriptor;
+    return class C {
+        static {
+            _static_private_method1_decorators = [dec];
+            __esDecorate(this, _static_private_method1_descriptor = { value: __setFunctionName(function () { }, "#method1") }, _static_private_method1_decorators, { kind: "method", name: "#method1", static: true, private: true }, null, _staticExtraInitializers);
+            __runInitializers(this, _staticExtraInitializers);
+        }
+        static get #method1() { return _static_private_method1_descriptor.value; }
+    };
+})();
+let D = (() => {
+    var _method1;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var D = class {
+        static { __setFunctionName(this, "D"); }
+        static { _method1 = function _method1() { }; }
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            D = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return D = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=esnext).js
new file mode 100644
index 0000000000000..77bf2e0573206
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-methods-staticPrivate(target=esnext).js
@@ -0,0 +1,22 @@
+//// [esDecorators-classDeclaration-methods-staticPrivate.ts]
+declare let dec: any;
+
+class C {
+    @dec static #method1() {}
+}
+
+@dec
+class D {
+    static #method1() {}
+}
+
+
+//// [esDecorators-classDeclaration-methods-staticPrivate.js]
+class C {
+    @dec
+    static #method1() { }
+}
+@dec
+class D {
+    static #method1() { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.errors.txt
new file mode 100644
index 0000000000000..b4a5e19c465c1
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.errors.txt
@@ -0,0 +1,19 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,1): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,1): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (2 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers
+    @dec class C {}
+    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.js
new file mode 100644
index 0000000000000..d5480454cf474
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.js
@@ -0,0 +1,33 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers
+@dec class C {}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.errors.txt
new file mode 100644
index 0000000000000..f329ab98d8afa
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.errors.txt
@@ -0,0 +1,22 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,16): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,16): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,16): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    export default @dec class {}
+                   ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                   ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                   ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.js
new file mode 100644
index 0000000000000..c39b9a4c0a89d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.js
@@ -0,0 +1,33 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+export default @dec class {}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+exports.default = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var default_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "default");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            default_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return default_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.errors.txt
new file mode 100644
index 0000000000000..48fb852a9e9d7
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,1): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,1): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(6,1): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    @dec class C {
+    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        static #foo() {}
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.js
new file mode 100644
index 0000000000000..75f96af51fcdc
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.js
@@ -0,0 +1,38 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+@dec class C {
+    static #foo() {}
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    var _foo;
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static { tslib_1.__setFunctionName(this, "C"); }
+        static { _foo = function _foo() { }; }
+        static {
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.errors.txt
new file mode 100644
index 0000000000000..20e1ff75616de
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec accessor #x: any;
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.js
new file mode 100644
index 0000000000000..fe5fbe6dab88c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec accessor #x: any;
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_x_decorators;
+    let _private_x_initializers = [];
+    let _private_x_descriptor;
+    return class C {
+        static {
+            _private_x_decorators = [dec];
+            tslib_1.__esDecorate(this, _private_x_descriptor = { get: tslib_1.__setFunctionName(function () { return this.#x_accessor_storage; }, "#x", "get"), set: tslib_1.__setFunctionName(function (value) { this.#x_accessor_storage = value; }, "#x", "set") }, _private_x_decorators, { kind: "accessor", name: "#x", static: false, private: true }, _private_x_initializers, _instanceExtraInitializers);
+        }
+        #x_accessor_storage = (tslib_1.__runInitializers(this, _instanceExtraInitializers), tslib_1.__runInitializers(this, _private_x_initializers, void 0));
+        get #x() { return _private_x_descriptor.get.call(this); }
+        set #x(value) { return _private_x_descriptor.set.call(this, value); }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.errors.txt
new file mode 100644
index 0000000000000..52f7b2a37331e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.errors.txt
@@ -0,0 +1,21 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (2 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers
+    class C {
+        @dec #x: any;
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.js
new file mode 100644
index 0000000000000..fffd6b94d648e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.js
@@ -0,0 +1,33 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers
+class C {
+    @dec #x: any;
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_x_decorators;
+    let _private_x_initializers = [];
+    return class C {
+        static {
+            _private_x_decorators = [dec];
+            tslib_1.__esDecorate(null, null, _private_x_decorators, { kind: "field", name: "#x", static: false, private: true }, _private_x_initializers, _instanceExtraInitializers);
+        }
+        #x = (tslib_1.__runInitializers(this, _instanceExtraInitializers), tslib_1.__runInitializers(this, _private_x_initializers, void 0));
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.errors.txt
new file mode 100644
index 0000000000000..95028c51f878b
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec get #foo() { return 1; }
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.js
new file mode 100644
index 0000000000000..0d3f06e9789fd
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec get #foo() { return 1; }
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_get_foo_decorators;
+    let _private_get_foo_descriptor;
+    return class C {
+        static {
+            _private_get_foo_decorators = [dec];
+            tslib_1.__esDecorate(this, _private_get_foo_descriptor = { get: tslib_1.__setFunctionName(function () { return 1; }, "#foo", "get") }, _private_get_foo_decorators, { kind: "getter", name: "#foo", static: false, private: true }, null, _instanceExtraInitializers);
+        }
+        get #foo() { return _private_get_foo_descriptor.get.call(this); }
+        constructor() {
+            tslib_1.__runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.errors.txt
new file mode 100644
index 0000000000000..eddaa367ef1f0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec #foo() {}
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.js
new file mode 100644
index 0000000000000..0138550e4a4a1
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec #foo() {}
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_foo_decorators;
+    let _private_foo_descriptor;
+    return class C {
+        static {
+            _private_foo_decorators = [dec];
+            tslib_1.__esDecorate(this, _private_foo_descriptor = { value: tslib_1.__setFunctionName(function () { }, "#foo") }, _private_foo_decorators, { kind: "method", name: "#foo", static: false, private: true }, null, _instanceExtraInitializers);
+        }
+        get #foo() { return _private_foo_descriptor.value; }
+        constructor() {
+            tslib_1.__runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.errors.txt
new file mode 100644
index 0000000000000..4918fb7d81b11
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec set #foo(value: number) { }
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.js
new file mode 100644
index 0000000000000..4b4485158a751
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec set #foo(value: number) { }
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _private_set_foo_decorators;
+    let _private_set_foo_descriptor;
+    return class C {
+        static {
+            _private_set_foo_decorators = [dec];
+            tslib_1.__esDecorate(this, _private_set_foo_descriptor = { set: tslib_1.__setFunctionName(function (value) { }, "#foo", "set") }, _private_set_foo_decorators, { kind: "setter", name: "#foo", static: false, private: true }, null, _instanceExtraInitializers);
+        }
+        set #foo(value) { return _private_set_foo_descriptor.set.call(this, value); }
+        constructor() {
+            tslib_1.__runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.errors.txt
new file mode 100644
index 0000000000000..184ef3fff1b78
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.errors.txt
@@ -0,0 +1,28 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,26): error TS1166: A computed property name in a class property declaration must have a simple literal type or a 'unique symbol' type.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (4 errors) ====
+    export {}
+    
+    declare var dec: any;
+    declare var x: any;
+    
+    // needs: __esDecorate, __runInitializers, __propKey
+    class C {
+        @dec static accessor [x]: any;
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                             ~~~
+!!! error TS1166: A computed property name in a class property declaration must have a simple literal type or a 'unique symbol' type.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.js
new file mode 100644
index 0000000000000..889455678e341
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.js
@@ -0,0 +1,37 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static accessor [x]: any;
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __propKey
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    return class C {
+        static {
+            tslib_1.__esDecorate(this, null, _static_member_decorators, { kind: "accessor", name: _a, static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static #_a_accessor_storage = tslib_1.__runInitializers(this, _static_member_initializers, void 0);
+        static get [(_static_member_decorators = [dec], _a = tslib_1.__propKey(x))]() { return this.#_a_accessor_storage; }
+        static set [_a](value) { this.#_a_accessor_storage = value; }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.errors.txt
new file mode 100644
index 0000000000000..051a26fa44576
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.errors.txt
@@ -0,0 +1,28 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,17): error TS1166: A computed property name in a class property declaration must have a simple literal type or a 'unique symbol' type.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (4 errors) ====
+    export {}
+    
+    declare var dec: any;
+    declare var x: any;
+    
+    // needs: __esDecorate, __runInitializers, __propKey
+    class C {
+        @dec static [x]: any;
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                    ~~~
+!!! error TS1166: A computed property name in a class property declaration must have a simple literal type or a 'unique symbol' type.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.js
new file mode 100644
index 0000000000000..36d8b5e0c7c94
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.js
@@ -0,0 +1,35 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static [x]: any;
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __propKey
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_member_decorators;
+    let _static_member_initializers = [];
+    return class C {
+        static {
+            tslib_1.__esDecorate(null, null, _static_member_decorators, { kind: "field", name: _a, static: true, private: false }, _static_member_initializers, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static [(_static_member_decorators = [dec], _a = tslib_1.__propKey(x))] = tslib_1.__runInitializers(this, _static_member_initializers, void 0);
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.errors.txt
new file mode 100644
index 0000000000000..73d4ec0b5baa0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.errors.txt
@@ -0,0 +1,25 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    declare var x: any;
+    
+    // needs: __esDecorate, __runInitializers, __propKey
+    class C {
+        @dec static get [x]() { return 1; }
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.js
new file mode 100644
index 0000000000000..018ed086e65a8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.js
@@ -0,0 +1,34 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static get [x]() { return 1; }
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __propKey
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_get_member_decorators;
+    return class C {
+        static {
+            tslib_1.__esDecorate(this, null, _static_get_member_decorators, { kind: "getter", name: _a, static: true, private: false }, null, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static get [(_static_get_member_decorators = [dec], _a = tslib_1.__propKey(x))]() { return 1; }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.errors.txt
new file mode 100644
index 0000000000000..7e8b7178baa9f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.errors.txt
@@ -0,0 +1,25 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    declare var x: any;
+    
+    // needs: __esDecorate, __runInitializers, __propKey
+    class C {
+        @dec static [x]() {}
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.js
new file mode 100644
index 0000000000000..7d4f384cc6ac3
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.js
@@ -0,0 +1,34 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static [x]() {}
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __propKey
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_member_decorators;
+    return class C {
+        static {
+            tslib_1.__esDecorate(this, null, _static_member_decorators, { kind: "method", name: _a, static: true, private: false }, null, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static [(_static_member_decorators = [dec], _a = tslib_1.__propKey(x))]() { }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.errors.txt
new file mode 100644
index 0000000000000..f2abd8dbc08b7
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.errors.txt
@@ -0,0 +1,25 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(8,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    declare var x: any;
+    
+    // needs: __esDecorate, __runInitializers, __propKey
+    class C {
+        @dec static set [x](value: number) { }
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.js
new file mode 100644
index 0000000000000..e949700f51530
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.js
@@ -0,0 +1,34 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static set [x](value: number) { }
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __propKey
+let C = (() => {
+    var _a;
+    let _staticExtraInitializers = [];
+    let _static_set_member_decorators;
+    return class C {
+        static {
+            tslib_1.__esDecorate(this, null, _static_set_member_decorators, { kind: "setter", name: _a, static: true, private: false }, null, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static set [(_static_set_member_decorators = [dec], _a = tslib_1.__propKey(x))](value) { }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.errors.txt
new file mode 100644
index 0000000000000..f646bc14d7f87
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec static accessor #x: any;
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.js
new file mode 100644
index 0000000000000..972e4f3f2061c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.js
@@ -0,0 +1,37 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static accessor #x: any;
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_x_decorators;
+    let _static_private_x_initializers = [];
+    let _static_private_x_descriptor;
+    return class C {
+        static {
+            _static_private_x_decorators = [dec];
+            tslib_1.__esDecorate(this, _static_private_x_descriptor = { get: tslib_1.__setFunctionName(function () { return this.#x_accessor_storage; }, "#x", "get"), set: tslib_1.__setFunctionName(function (value) { this.#x_accessor_storage = value; }, "#x", "set") }, _static_private_x_decorators, { kind: "accessor", name: "#x", static: true, private: true }, _static_private_x_initializers, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static #x_accessor_storage = tslib_1.__runInitializers(this, _static_private_x_initializers, void 0);
+        static get #x() { return _static_private_x_descriptor.get.call(this); }
+        static set #x(value) { return _static_private_x_descriptor.set.call(this, value); }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.errors.txt
new file mode 100644
index 0000000000000..870355e1ae4b4
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.errors.txt
@@ -0,0 +1,21 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (2 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers
+    class C {
+        @dec static #x: any;
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.js
new file mode 100644
index 0000000000000..6c4b067c87e41
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.js
@@ -0,0 +1,34 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers
+class C {
+    @dec static #x: any;
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_x_decorators;
+    let _static_private_x_initializers = [];
+    return class C {
+        static {
+            _static_private_x_decorators = [dec];
+            tslib_1.__esDecorate(null, null, _static_private_x_decorators, { kind: "field", name: "#x", static: true, private: true }, _static_private_x_initializers, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static #x = tslib_1.__runInitializers(this, _static_private_x_initializers, void 0);
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.errors.txt
new file mode 100644
index 0000000000000..3dd2e89933683
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec static get #foo() { return 1; }
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.js
new file mode 100644
index 0000000000000..7630739274f7a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.js
@@ -0,0 +1,34 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static get #foo() { return 1; }
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_get_foo_decorators;
+    let _static_private_get_foo_descriptor;
+    return class C {
+        static {
+            _static_private_get_foo_decorators = [dec];
+            tslib_1.__esDecorate(this, _static_private_get_foo_descriptor = { get: tslib_1.__setFunctionName(function () { return 1; }, "#foo", "get") }, _static_private_get_foo_decorators, { kind: "getter", name: "#foo", static: true, private: true }, null, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static get #foo() { return _static_private_get_foo_descriptor.get.call(this); }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.errors.txt
new file mode 100644
index 0000000000000..150ad6c264762
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec static #foo() {}
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.js
new file mode 100644
index 0000000000000..c2f0855e8fc3e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.js
@@ -0,0 +1,34 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static #foo() {}
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_foo_decorators;
+    let _static_private_foo_descriptor;
+    return class C {
+        static {
+            _static_private_foo_decorators = [dec];
+            tslib_1.__esDecorate(this, _static_private_foo_descriptor = { value: tslib_1.__setFunctionName(function () { }, "#foo") }, _static_private_foo_decorators, { kind: "method", name: "#foo", static: true, private: true }, null, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static get #foo() { return _static_private_foo_descriptor.value; }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.errors.txt
new file mode 100644
index 0000000000000..fb8b86e40bd26
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.errors.txt
@@ -0,0 +1,24 @@
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classDeclaration/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/main.ts (3 errors) ====
+    export {}
+    
+    declare var dec: any;
+    
+    // needs: __esDecorate, __runInitializers, __setFunctionName
+    class C {
+        @dec static set #foo(value: number) { }
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    }
+    
+==== tests/cases/conformance/esDecorators/classDeclaration/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.js b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.js
new file mode 100644
index 0000000000000..c4304a4161bde
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.js
@@ -0,0 +1,34 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.ts] ////
+
+//// [main.ts]
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static set #foo(value: number) { }
+}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// needs: __esDecorate, __runInitializers, __setFunctionName
+let C = (() => {
+    let _staticExtraInitializers = [];
+    let _static_private_set_foo_decorators;
+    let _static_private_set_foo_descriptor;
+    return class C {
+        static {
+            _static_private_set_foo_decorators = [dec];
+            tslib_1.__esDecorate(this, _static_private_set_foo_descriptor = { set: tslib_1.__setFunctionName(function (value) { }, "#foo", "set") }, _static_private_set_foo_decorators, { kind: "setter", name: "#foo", static: true, private: true }, null, _staticExtraInitializers);
+            tslib_1.__runInitializers(this, _staticExtraInitializers);
+        }
+        static set #foo(value) { return _static_private_set_foo_descriptor.set.call(this, value); }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es2015).js
new file mode 100644
index 0000000000000..fac9d3cbc855b
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es2015).js
@@ -0,0 +1,25 @@
+//// [esDecorators-classDeclaration-multipleDecorators.ts]
+declare let dec1: any, dec2: any;
+
+@dec1
+@dec2
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-multipleDecorators.js]
+let C = (() => {
+    let _classDecorators = [dec1, dec2];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = _classThis = class {
+    };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es2022).js
new file mode 100644
index 0000000000000..df55f69d019fd
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es2022).js
@@ -0,0 +1,24 @@
+//// [esDecorators-classDeclaration-multipleDecorators.ts]
+declare let dec1: any, dec2: any;
+
+@dec1
+@dec2
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-multipleDecorators.js]
+let C = (() => {
+    let _classDecorators = [dec1, dec2];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es5).js
new file mode 100644
index 0000000000000..8946e029ab70e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=es5).js
@@ -0,0 +1,29 @@
+//// [esDecorators-classDeclaration-multipleDecorators.ts]
+declare let dec1: any, dec2: any;
+
+@dec1
+@dec2
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-multipleDecorators.js]
+var _this = this;
+var C = function () {
+    var _classDecorators = [dec1, dec2];
+    var _classDescriptor;
+    var _classExtraInitializers = [];
+    var _classThis;
+    var C = _classThis = /** @class */ (function () {
+        function C_1() {
+        }
+        return C_1;
+    }());
+    __setFunctionName(_classThis, "C");
+    (function () {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=esnext).js
new file mode 100644
index 0000000000000..6e3e8fea328b9
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-multipleDecorators(target=esnext).js
@@ -0,0 +1,14 @@
+//// [esDecorators-classDeclaration-multipleDecorators.ts]
+declare let dec1: any, dec2: any;
+
+@dec1
+@dec2
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-multipleDecorators.js]
+@dec1
+@dec2
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es2015).js
new file mode 100644
index 0000000000000..3f93aff1faa0c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es2015).js
@@ -0,0 +1,41 @@
+//// [esDecorators-classDeclaration-nonStatic-methods.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec
+    method1() {}
+
+    @dec
+    ["method2"]() {}
+
+    @dec
+    [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-nonStatic-methods.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    var _b;
+    let _instanceExtraInitializers = [];
+    let _method1_decorators;
+    let _member_decorators;
+    let _member_decorators_1;
+    return _a = class C {
+            method1() { }
+            [(_method1_decorators = [dec], _member_decorators = [dec], "method2")]() { }
+            [(_member_decorators_1 = [dec], _b = __propKey(method3))]() { }
+            constructor() {
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+        },
+        (() => {
+            __esDecorate(_a, null, _method1_decorators, { kind: "method", name: "method1", static: false, private: false, access: { get() { return this.method1; } } }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators, { kind: "method", name: "method2", static: false, private: false, access: { get() { return this["method2"]; } } }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators_1, { kind: "method", name: _b, static: false, private: false, access: { get() { return this[_b]; } } }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es2022).js
new file mode 100644
index 0000000000000..c0aacbd263843
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es2022).js
@@ -0,0 +1,39 @@
+//// [esDecorators-classDeclaration-nonStatic-methods.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec
+    method1() {}
+
+    @dec
+    ["method2"]() {}
+
+    @dec
+    [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-nonStatic-methods.js]
+const method3 = "method3";
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _method1_decorators;
+    let _member_decorators;
+    let _member_decorators_1;
+    return class C {
+        static {
+            __esDecorate(this, null, _method1_decorators, { kind: "method", name: "method1", static: false, private: false, access: { get() { return this.method1; } } }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _member_decorators, { kind: "method", name: "method2", static: false, private: false, access: { get() { return this["method2"]; } } }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _member_decorators_1, { kind: "method", name: _a, static: false, private: false, access: { get() { return this[_a]; } } }, null, _instanceExtraInitializers);
+        }
+        method1() { }
+        [(_method1_decorators = [dec], _member_decorators = [dec], "method2")]() { }
+        [(_member_decorators_1 = [dec], _a = __propKey(method3))]() { }
+        constructor() {
+            __runInitializers(this, _instanceExtraInitializers);
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es5).js
new file mode 100644
index 0000000000000..dfe79fd0f75ff
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=es5).js
@@ -0,0 +1,43 @@
+//// [esDecorators-classDeclaration-nonStatic-methods.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec
+    method1() {}
+
+    @dec
+    ["method2"]() {}
+
+    @dec
+    [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-nonStatic-methods.js]
+var _this = this;
+var method3 = "method3";
+var C = function () {
+    var _a;
+    var _b;
+    var _instanceExtraInitializers = [];
+    var _method1_decorators;
+    var _member_decorators;
+    var _member_decorators_1;
+    return _a = /** @class */ (function () {
+            function C() {
+                __runInitializers(this, _instanceExtraInitializers);
+            }
+            C.prototype.method1 = function () { };
+            C.prototype[(_method1_decorators = [dec], _member_decorators = [dec], "method2")] = function () { };
+            C.prototype[(_member_decorators_1 = [dec], _b = __propKey(method3))] = function () { };
+            return C;
+        }()),
+        (function () {
+            __esDecorate(_a, null, _method1_decorators, { kind: "method", name: "method1", static: false, private: false, access: { get: function () { return this.method1; } } }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators, { kind: "method", name: "method2", static: false, private: false, access: { get: function () { return this["method2"]; } } }, null, _instanceExtraInitializers);
+            __esDecorate(_a, null, _member_decorators_1, { kind: "method", name: _b, static: false, private: false, access: { get: function () { return this[_b]; } } }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=esnext).js
new file mode 100644
index 0000000000000..d509c408a598d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-nonStatic-methods(target=esnext).js
@@ -0,0 +1,27 @@
+//// [esDecorators-classDeclaration-nonStatic-methods.ts]
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec
+    method1() {}
+
+    @dec
+    ["method2"]() {}
+
+    @dec
+    [method3]() {}
+}
+
+
+//// [esDecorators-classDeclaration-nonStatic-methods.js]
+const method3 = "method3";
+class C {
+    @dec
+    method1() { }
+    @dec
+    ["method2"]() { }
+    @dec
+    [method3]() { }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).js
new file mode 100644
index 0000000000000..32b59b3cce617
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).js
@@ -0,0 +1,123 @@
+//// [esDecorators-classDeclaration-outerThisReference.ts]
+declare let dec: any;
+
+declare let f: any;
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+class A {
+    @dec(this)
+    b = 2;
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+class B {
+    // @ts-ignore
+    [f(this)] = 1;
+
+    @dec(this)
+    b = 2;
+
+    // @ts-ignore
+    [f(this)] = 3;
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+class C {
+    #a = 1;
+
+    @dec(this, (x: C) => x.#a)
+    b = 2;
+}
+
+//// [esDecorators-classDeclaration-outerThisReference.js]
+// `this` should point to the outer `this` in both cases.
+let A = (() => {
+    let _outerThis = this;
+    let _classDecorators = [dec(this)];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _instanceExtraInitializers = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var A = _classThis = class {
+        constructor() {
+            this.b = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _b_initializers, 2));
+        }
+    };
+    __setFunctionName(_classThis, "A");
+    (() => {
+        _b_decorators = [dec(_outerThis)];
+        __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers);
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        A = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return A = _classThis;
+})();
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+let B = (() => {
+    var _a, _b;
+    let _classDecorators_1 = [dec(this)];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _instanceExtraInitializers_1 = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var B = _classThis_1 = class {
+        constructor() {
+            // @ts-ignore
+            this[_a] = (__runInitializers(this, _instanceExtraInitializers_1), 1);
+            this.b = __runInitializers(this, _b_initializers, 2);
+            // @ts-ignore
+            this[_b] = 3;
+        }
+    };
+    _a = f(this);
+    _b = (_b_decorators = [dec(this)], f(this));
+    __setFunctionName(_classThis_1, "B");
+    (() => {
+        __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers_1);
+        __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+        B = _classThis_1 = _classDescriptor_1.value;
+        __runInitializers(_classThis_1, _classExtraInitializers_1);
+    })();
+    return B = _classThis_1;
+})();
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+let C = (() => {
+    var _a;
+    let _outerThis_1 = this;
+    let _classDecorators_2 = [dec(this)];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    let _instanceExtraInitializers_2 = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var C = _classThis_2 = class {
+        constructor() {
+            _a.set(this, (__runInitializers(this, _instanceExtraInitializers_2), 1));
+            this.b = __runInitializers(this, _b_initializers, 2);
+        }
+    };
+    _a = new WeakMap();
+    __setFunctionName(_classThis_2, "C");
+    (() => {
+        _b_decorators = [dec(_outerThis_1, (x) => __classPrivateFieldGet(x, _a, "f"))];
+        __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers_2);
+        __esDecorate(null, _classDescriptor_2 = { value: _classThis_2 }, _classDecorators_2, { kind: "class", name: _classThis_2.name }, null, _classExtraInitializers_2);
+        C = _classThis_2 = _classDescriptor_2.value;
+        __runInitializers(_classThis_2, _classExtraInitializers_2);
+    })();
+    return C = _classThis_2;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).symbols b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).symbols
new file mode 100644
index 0000000000000..eb559c19bc8e0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).symbols
@@ -0,0 +1,76 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+
+declare let f: any;
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class A {
+>A : Symbol(A, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 19))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(A.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 6, 9))
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class B {
+>B : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 15, 9))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(B.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 17, 18))
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 20, 10))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class C {
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+
+    #a = 1;
+>#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+
+    @dec(this, (x: C) => x.#a)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+>x.#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+
+    b = 2;
+>b : Symbol(C.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 30, 11))
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).types b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).types
new file mode 100644
index 0000000000000..999d15aca5483
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2015).types
@@ -0,0 +1,90 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : any
+
+declare let f: any;
+>f : any
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class A {
+>A : A
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class B {
+>B : B
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>1 : 1
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>3 : 3
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class C {
+>C : C
+
+    #a = 1;
+>#a : number
+>1 : 1
+
+    @dec(this, (x: C) => x.#a)
+>dec(this, (x: C) => x.#a) : any
+>dec : any
+>this : typeof globalThis
+>(x: C) => x.#a : (x: C) => number
+>x : C
+>x.#a : number
+>x : C
+
+    b = 2;
+>b : number
+>2 : 2
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).js b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).js
new file mode 100644
index 0000000000000..32b59b3cce617
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).js
@@ -0,0 +1,123 @@
+//// [esDecorators-classDeclaration-outerThisReference.ts]
+declare let dec: any;
+
+declare let f: any;
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+class A {
+    @dec(this)
+    b = 2;
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+class B {
+    // @ts-ignore
+    [f(this)] = 1;
+
+    @dec(this)
+    b = 2;
+
+    // @ts-ignore
+    [f(this)] = 3;
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+class C {
+    #a = 1;
+
+    @dec(this, (x: C) => x.#a)
+    b = 2;
+}
+
+//// [esDecorators-classDeclaration-outerThisReference.js]
+// `this` should point to the outer `this` in both cases.
+let A = (() => {
+    let _outerThis = this;
+    let _classDecorators = [dec(this)];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _instanceExtraInitializers = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var A = _classThis = class {
+        constructor() {
+            this.b = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _b_initializers, 2));
+        }
+    };
+    __setFunctionName(_classThis, "A");
+    (() => {
+        _b_decorators = [dec(_outerThis)];
+        __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers);
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        A = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return A = _classThis;
+})();
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+let B = (() => {
+    var _a, _b;
+    let _classDecorators_1 = [dec(this)];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _instanceExtraInitializers_1 = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var B = _classThis_1 = class {
+        constructor() {
+            // @ts-ignore
+            this[_a] = (__runInitializers(this, _instanceExtraInitializers_1), 1);
+            this.b = __runInitializers(this, _b_initializers, 2);
+            // @ts-ignore
+            this[_b] = 3;
+        }
+    };
+    _a = f(this);
+    _b = (_b_decorators = [dec(this)], f(this));
+    __setFunctionName(_classThis_1, "B");
+    (() => {
+        __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers_1);
+        __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+        B = _classThis_1 = _classDescriptor_1.value;
+        __runInitializers(_classThis_1, _classExtraInitializers_1);
+    })();
+    return B = _classThis_1;
+})();
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+let C = (() => {
+    var _a;
+    let _outerThis_1 = this;
+    let _classDecorators_2 = [dec(this)];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    let _instanceExtraInitializers_2 = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var C = _classThis_2 = class {
+        constructor() {
+            _a.set(this, (__runInitializers(this, _instanceExtraInitializers_2), 1));
+            this.b = __runInitializers(this, _b_initializers, 2);
+        }
+    };
+    _a = new WeakMap();
+    __setFunctionName(_classThis_2, "C");
+    (() => {
+        _b_decorators = [dec(_outerThis_1, (x) => __classPrivateFieldGet(x, _a, "f"))];
+        __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers_2);
+        __esDecorate(null, _classDescriptor_2 = { value: _classThis_2 }, _classDecorators_2, { kind: "class", name: _classThis_2.name }, null, _classExtraInitializers_2);
+        C = _classThis_2 = _classDescriptor_2.value;
+        __runInitializers(_classThis_2, _classExtraInitializers_2);
+    })();
+    return C = _classThis_2;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).symbols b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).symbols
new file mode 100644
index 0000000000000..eb559c19bc8e0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).symbols
@@ -0,0 +1,76 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+
+declare let f: any;
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class A {
+>A : Symbol(A, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 19))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(A.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 6, 9))
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class B {
+>B : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 15, 9))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(B.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 17, 18))
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 20, 10))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class C {
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+
+    #a = 1;
+>#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+
+    @dec(this, (x: C) => x.#a)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+>x.#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+
+    b = 2;
+>b : Symbol(C.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 30, 11))
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).types b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).types
new file mode 100644
index 0000000000000..999d15aca5483
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2021).types
@@ -0,0 +1,90 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : any
+
+declare let f: any;
+>f : any
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class A {
+>A : A
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class B {
+>B : B
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>1 : 1
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>3 : 3
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class C {
+>C : C
+
+    #a = 1;
+>#a : number
+>1 : 1
+
+    @dec(this, (x: C) => x.#a)
+>dec(this, (x: C) => x.#a) : any
+>dec : any
+>this : typeof globalThis
+>(x: C) => x.#a : (x: C) => number
+>x : C
+>x.#a : number
+>x : C
+
+    b = 2;
+>b : number
+>2 : 2
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).js
new file mode 100644
index 0000000000000..0908f39c28f45
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).js
@@ -0,0 +1,109 @@
+//// [esDecorators-classDeclaration-outerThisReference.ts]
+declare let dec: any;
+
+declare let f: any;
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+class A {
+    @dec(this)
+    b = 2;
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+class B {
+    // @ts-ignore
+    [f(this)] = 1;
+
+    @dec(this)
+    b = 2;
+
+    // @ts-ignore
+    [f(this)] = 3;
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+class C {
+    #a = 1;
+
+    @dec(this, (x: C) => x.#a)
+    b = 2;
+}
+
+//// [esDecorators-classDeclaration-outerThisReference.js]
+// `this` should point to the outer `this` in both cases.
+let A = (() => {
+    let _outerThis = this;
+    let _classDecorators = [dec(this)];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _instanceExtraInitializers = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var A = class {
+        static {
+            _b_decorators = [dec(_outerThis)];
+            __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers);
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            A = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+        b = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _b_initializers, 2));
+    };
+    return A = _classThis;
+})();
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+let B = (() => {
+    let _classDecorators_1 = [dec(this)];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _instanceExtraInitializers_1 = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var B = class {
+        static {
+            __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers_1);
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            B = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+        // @ts-ignore
+        [f(this)] = (__runInitializers(this, _instanceExtraInitializers_1), 1);
+        b = __runInitializers(this, _b_initializers, 2);
+        // @ts-ignore
+        [(_b_decorators = [dec(this)], f(this))] = 3;
+    };
+    return B = _classThis_1;
+})();
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+let C = (() => {
+    let _outerThis_1 = this;
+    let _classDecorators_2 = [dec(this)];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    let _instanceExtraInitializers_2 = [];
+    let _b_decorators;
+    let _b_initializers = [];
+    var C = class {
+        static {
+            _b_decorators = [dec(_outerThis_1, (x) => x.#a)];
+            __esDecorate(null, null, _b_decorators, { kind: "field", name: "b", static: false, private: false }, _b_initializers, _instanceExtraInitializers_2);
+            __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+            C = _classThis_2 = _classDescriptor_2.value;
+            __runInitializers(_classThis_2, _classExtraInitializers_2);
+        }
+        #a = (__runInitializers(this, _instanceExtraInitializers_2), 1);
+        b = __runInitializers(this, _b_initializers, 2);
+    };
+    return C = _classThis_2;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).symbols b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).symbols
new file mode 100644
index 0000000000000..eb559c19bc8e0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).symbols
@@ -0,0 +1,76 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+
+declare let f: any;
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class A {
+>A : Symbol(A, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 19))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(A.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 6, 9))
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class B {
+>B : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 15, 9))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(B.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 17, 18))
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 20, 10))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class C {
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+
+    #a = 1;
+>#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+
+    @dec(this, (x: C) => x.#a)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+>x.#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+
+    b = 2;
+>b : Symbol(C.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 30, 11))
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).types b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).types
new file mode 100644
index 0000000000000..999d15aca5483
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=es2022).types
@@ -0,0 +1,90 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : any
+
+declare let f: any;
+>f : any
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class A {
+>A : A
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class B {
+>B : B
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>1 : 1
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>3 : 3
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class C {
+>C : C
+
+    #a = 1;
+>#a : number
+>1 : 1
+
+    @dec(this, (x: C) => x.#a)
+>dec(this, (x: C) => x.#a) : any
+>dec : any
+>this : typeof globalThis
+>(x: C) => x.#a : (x: C) => number
+>x : C
+>x.#a : number
+>x : C
+
+    b = 2;
+>b : number
+>2 : 2
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).js
new file mode 100644
index 0000000000000..268e20c938902
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).js
@@ -0,0 +1,63 @@
+//// [esDecorators-classDeclaration-outerThisReference.ts]
+declare let dec: any;
+
+declare let f: any;
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+class A {
+    @dec(this)
+    b = 2;
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+class B {
+    // @ts-ignore
+    [f(this)] = 1;
+
+    @dec(this)
+    b = 2;
+
+    // @ts-ignore
+    [f(this)] = 3;
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+class C {
+    #a = 1;
+
+    @dec(this, (x: C) => x.#a)
+    b = 2;
+}
+
+//// [esDecorators-classDeclaration-outerThisReference.js]
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+class A {
+    @dec(this)
+    b = 2;
+}
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+@dec(this)
+class B {
+    // @ts-ignore
+    [f(this)] = 1;
+    @dec(this)
+    b = 2;
+    // @ts-ignore
+    [f(this)] = 3;
+}
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+class C {
+    #a = 1;
+    @dec(this, (x) => x.#a)
+    b = 2;
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).symbols b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).symbols
new file mode 100644
index 0000000000000..eb559c19bc8e0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).symbols
@@ -0,0 +1,76 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+
+declare let f: any;
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class A {
+>A : Symbol(A, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 19))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(A.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 6, 9))
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class B {
+>B : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 15, 9))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+
+    @dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+    b = 2;
+>b : Symbol(B.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 17, 18))
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : Symbol(B[f(this)], Decl(esDecorators-classDeclaration-outerThisReference.ts, 20, 10))
+>f : Symbol(f, Decl(esDecorators-classDeclaration-outerThisReference.ts, 2, 11))
+>this : Symbol(B, Decl(esDecorators-classDeclaration-outerThisReference.ts, 9, 1))
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+
+class C {
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+
+    #a = 1;
+>#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+
+    @dec(this, (x: C) => x.#a)
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-outerThisReference.ts, 0, 11))
+>this : Symbol(globalThis)
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+>C : Symbol(C, Decl(esDecorators-classDeclaration-outerThisReference.ts, 24, 1))
+>x.#a : Symbol(C.#a, Decl(esDecorators-classDeclaration-outerThisReference.ts, 29, 9))
+>x : Symbol(x, Decl(esDecorators-classDeclaration-outerThisReference.ts, 32, 16))
+
+    b = 2;
+>b : Symbol(C.b, Decl(esDecorators-classDeclaration-outerThisReference.ts, 30, 11))
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).types b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).types
new file mode 100644
index 0000000000000..999d15aca5483
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-outerThisReference(target=esnext).types
@@ -0,0 +1,90 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts ===
+declare let dec: any;
+>dec : any
+
+declare let f: any;
+>f : any
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class A {
+>A : A
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class B {
+>B : B
+
+    // @ts-ignore
+    [f(this)] = 1;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>1 : 1
+
+    @dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+    b = 2;
+>b : number
+>2 : 2
+
+    // @ts-ignore
+    [f(this)] = 3;
+>[f(this)] : number
+>f(this) : any
+>f : any
+>this : this
+>3 : 3
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+>dec(this) : any
+>dec : any
+>this : typeof globalThis
+
+class C {
+>C : C
+
+    #a = 1;
+>#a : number
+>1 : 1
+
+    @dec(this, (x: C) => x.#a)
+>dec(this, (x: C) => x.#a) : any
+>dec : any
+>this : typeof globalThis
+>(x: C) => x.#a : (x: C) => number
+>x : C
+>x.#a : number
+>x : C
+
+    b = 2;
+>b : number
+>2 : 2
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2015).errors.txt
new file mode 100644
index 0000000000000..2ef4cd37f1d07
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2015).errors.txt
@@ -0,0 +1,50 @@
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(4,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(5,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(6,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(7,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(8,18): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(12,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(13,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(14,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(15,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(16,18): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts (10 errors) ====
+    declare let dec: any;
+    
+    class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
+    (class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2015).js
new file mode 100644
index 0000000000000..9fcaca27c306a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2015).js
@@ -0,0 +1,34 @@
+//// [esDecorators-classDeclaration-parameterDecorators.ts]
+declare let dec: any;
+
+class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+}
+
+(class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+});
+
+//// [esDecorators-classDeclaration-parameterDecorators.js]
+class C {
+    constructor(x) { }
+    method(x) { }
+    set x(x) { }
+    static method(x) { }
+    static set x(x) { }
+}
+(class C {
+    constructor(x) { }
+    method(x) { }
+    set x(x) { }
+    static method(x) { }
+    static set x(x) { }
+});
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2022).errors.txt
new file mode 100644
index 0000000000000..2ef4cd37f1d07
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2022).errors.txt
@@ -0,0 +1,50 @@
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(4,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(5,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(6,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(7,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(8,18): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(12,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(13,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(14,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(15,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(16,18): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts (10 errors) ====
+    declare let dec: any;
+    
+    class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
+    (class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2022).js
new file mode 100644
index 0000000000000..9fcaca27c306a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es2022).js
@@ -0,0 +1,34 @@
+//// [esDecorators-classDeclaration-parameterDecorators.ts]
+declare let dec: any;
+
+class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+}
+
+(class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+});
+
+//// [esDecorators-classDeclaration-parameterDecorators.js]
+class C {
+    constructor(x) { }
+    method(x) { }
+    set x(x) { }
+    static method(x) { }
+    static set x(x) { }
+}
+(class C {
+    constructor(x) { }
+    method(x) { }
+    set x(x) { }
+    static method(x) { }
+    static set x(x) { }
+});
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es5).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es5).errors.txt
new file mode 100644
index 0000000000000..2ef4cd37f1d07
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es5).errors.txt
@@ -0,0 +1,50 @@
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(4,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(5,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(6,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(7,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(8,18): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(12,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(13,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(14,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(15,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(16,18): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts (10 errors) ====
+    declare let dec: any;
+    
+    class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
+    (class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es5).js
new file mode 100644
index 0000000000000..9be181527df66
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=es5).js
@@ -0,0 +1,54 @@
+//// [esDecorators-classDeclaration-parameterDecorators.ts]
+declare let dec: any;
+
+class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+}
+
+(class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+});
+
+//// [esDecorators-classDeclaration-parameterDecorators.js]
+var C = /** @class */ (function () {
+    function C(x) {
+    }
+    C.prototype.method = function (x) { };
+    Object.defineProperty(C.prototype, "x", {
+        set: function (x) { },
+        enumerable: false,
+        configurable: true
+    });
+    C.method = function (x) { };
+    Object.defineProperty(C, "x", {
+        set: function (x) { },
+        enumerable: false,
+        configurable: true
+    });
+    return C;
+}());
+(/** @class */ (function () {
+    function C(x) {
+    }
+    C.prototype.method = function (x) { };
+    Object.defineProperty(C.prototype, "x", {
+        set: function (x) { },
+        enumerable: false,
+        configurable: true
+    });
+    C.method = function (x) { };
+    Object.defineProperty(C, "x", {
+        set: function (x) { },
+        enumerable: false,
+        configurable: true
+    });
+    return C;
+}()));
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=esnext).errors.txt
new file mode 100644
index 0000000000000..2ef4cd37f1d07
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=esnext).errors.txt
@@ -0,0 +1,50 @@
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(4,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(5,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(6,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(7,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(8,18): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(12,17): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(13,12): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(14,11): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(15,19): error TS1206: Decorators are not valid here.
+tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts(16,18): error TS1206: Decorators are not valid here.
+
+
+==== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts (10 errors) ====
+    declare let dec: any;
+    
+    class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    }
+    
+    (class C {
+        constructor(@dec x: any) {}
+                    ~
+!!! error TS1206: Decorators are not valid here.
+        method(@dec x: any) {}
+               ~
+!!! error TS1206: Decorators are not valid here.
+        set x(@dec x: any) {}
+              ~
+!!! error TS1206: Decorators are not valid here.
+        static method(@dec x: any) {}
+                      ~
+!!! error TS1206: Decorators are not valid here.
+        static set x(@dec x: any) {}
+                     ~
+!!! error TS1206: Decorators are not valid here.
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=esnext).js
new file mode 100644
index 0000000000000..7b3a073d14a34
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterDecorators(target=esnext).js
@@ -0,0 +1,54 @@
+//// [esDecorators-classDeclaration-parameterDecorators.ts]
+declare let dec: any;
+
+class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+}
+
+(class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+});
+
+//// [esDecorators-classDeclaration-parameterDecorators.js]
+class C {
+    constructor(
+    @dec
+    x) { }
+    method(
+    @dec
+    x) { }
+    set x(
+    @dec
+    x) { }
+    static method(
+    @dec
+    x) { }
+    static set x(
+    @dec
+    x) { }
+}
+(class C {
+    constructor(
+    @dec
+    x) { }
+    method(
+    @dec
+    x) { }
+    set x(
+    @dec
+    x) { }
+    static method(
+    @dec
+    x) { }
+    static set x(
+    @dec
+    x) { }
+});
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2015,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2015,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..f84317b3778c2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2015,usedefineforclassfields=false).js
@@ -0,0 +1,29 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _speak_decorators;
+    return _a = class C {
+            constructor(message) {
+                this.message = (__runInitializers(this, _instanceExtraInitializers), message);
+            }
+            speak() {
+            }
+        },
+        (() => {
+            _speak_decorators = [bound];
+            __esDecorate(_a, null, _speak_decorators, { kind: "method", name: "speak", static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2015,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2015,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..c3fca6ebf00c4
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2015,usedefineforclassfields=true).js
@@ -0,0 +1,34 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+let C = (() => {
+    var _a;
+    let _instanceExtraInitializers = [];
+    let _speak_decorators;
+    return _a = class C {
+            constructor(message) {
+                Object.defineProperty(this, "message", {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: (__runInitializers(this, _instanceExtraInitializers), message)
+                });
+            }
+            speak() {
+            }
+        },
+        (() => {
+            _speak_decorators = [bound];
+            __esDecorate(_a, null, _speak_decorators, { kind: "method", name: "speak", static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2022,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2022,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..928864b674b14
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2022,usedefineforclassfields=false).js
@@ -0,0 +1,27 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _speak_decorators;
+    return class C {
+        static {
+            _speak_decorators = [bound];
+            __esDecorate(this, null, _speak_decorators, { kind: "method", name: "speak", static: false, private: false }, null, _instanceExtraInitializers);
+        }
+        constructor(message) {
+            this.message = (__runInitializers(this, _instanceExtraInitializers), message);
+        }
+        speak() {
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2022,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2022,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..39679938f0997
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es2022,usedefineforclassfields=true).js
@@ -0,0 +1,28 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _speak_decorators;
+    return class C {
+        static {
+            _speak_decorators = [bound];
+            __esDecorate(this, null, _speak_decorators, { kind: "method", name: "speak", static: false, private: false }, null, _instanceExtraInitializers);
+        }
+        message = (__runInitializers(this, _instanceExtraInitializers), void 0);
+        constructor(message) {
+            this.message = message;
+        }
+        speak() {
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es5,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es5,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..23a24c0eef544
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es5,usedefineforclassfields=false).js
@@ -0,0 +1,31 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+var _this = this;
+var C = function () {
+    var _a;
+    var _instanceExtraInitializers = [];
+    var _speak_decorators;
+    return _a = /** @class */ (function () {
+            function C(message) {
+                this.message = (__runInitializers(this, _instanceExtraInitializers), message);
+            }
+            C.prototype.speak = function () {
+            };
+            return C;
+        }()),
+        (function () {
+            _speak_decorators = [bound];
+            __esDecorate(_a, null, _speak_decorators, { kind: "method", name: "speak", static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es5,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es5,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..784c8658144e5
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=es5,usedefineforclassfields=true).js
@@ -0,0 +1,41 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+var _this = this;
+var C = function () {
+    var _a;
+    var _instanceExtraInitializers = [];
+    var _speak_decorators;
+    return _a = /** @class */ (function () {
+            function C(message) {
+                Object.defineProperty(this, "message", {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: (__runInitializers(this, _instanceExtraInitializers), message)
+                });
+            }
+            Object.defineProperty(C.prototype, "speak", {
+                enumerable: false,
+                configurable: true,
+                writable: true,
+                value: function () {
+                }
+            });
+            return C;
+        }()),
+        (function () {
+            _speak_decorators = [bound];
+            __esDecorate(_a, null, _speak_decorators, { kind: "method", name: "speak", static: false, private: false }, null, _instanceExtraInitializers);
+        })(),
+        _a;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=esnext,usedefineforclassfields=false).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=esnext,usedefineforclassfields=false).js
new file mode 100644
index 0000000000000..928864b674b14
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=esnext,usedefineforclassfields=false).js
@@ -0,0 +1,27 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+let C = (() => {
+    let _instanceExtraInitializers = [];
+    let _speak_decorators;
+    return class C {
+        static {
+            _speak_decorators = [bound];
+            __esDecorate(this, null, _speak_decorators, { kind: "method", name: "speak", static: false, private: false }, null, _instanceExtraInitializers);
+        }
+        constructor(message) {
+            this.message = (__runInitializers(this, _instanceExtraInitializers), message);
+        }
+        speak() {
+        }
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=esnext,usedefineforclassfields=true).js b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=esnext,usedefineforclassfields=true).js
new file mode 100644
index 0000000000000..ee5fc58c9e993
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-parameterProperties(target=esnext,usedefineforclassfields=true).js
@@ -0,0 +1,21 @@
+//// [esDecorators-classDeclaration-parameterProperties.ts]
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
+
+
+//// [esDecorators-classDeclaration-parameterProperties.js]
+class C {
+    message;
+    constructor(message) {
+        this.message = message;
+    }
+    @bound
+    speak() {
+    }
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es2015).js
new file mode 100644
index 0000000000000..7702afec3b08f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es2015).js
@@ -0,0 +1,74 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName.ts] ////
+
+//// [a.ts]
+declare let dec: any;
+
+@dec class C {}
+
+export {}
+
+//// [b.ts]
+declare let dec: any;
+
+@dec export class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class {}
+
+
+//// [a.js]
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = _classThis = class {
+    };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
+export {};
+//// [b.js]
+export let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = _classThis = class {
+    };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
+//// [c.js]
+export default (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var default_1 = _classThis = class {
+    };
+    (() => {
+        __setFunctionName(_classThis, "default");
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        default_1 = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return default_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es2022).js
new file mode 100644
index 0000000000000..09eac0a5b6171
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es2022).js
@@ -0,0 +1,72 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName.ts] ////
+
+//// [a.ts]
+declare let dec: any;
+
+@dec class C {}
+
+export {}
+
+//// [b.ts]
+declare let dec: any;
+
+@dec export class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class {}
+
+
+//// [a.js]
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
+export {};
+//// [b.js]
+export let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
+//// [c.js]
+export default (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var default_1 = class {
+        static {
+            __setFunctionName(this, "default");
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            default_1 = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return default_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es5).js
new file mode 100644
index 0000000000000..b574caffd3bbf
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=es5).js
@@ -0,0 +1,93 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName.ts] ////
+
+//// [a.ts]
+declare let dec: any;
+
+@dec class C {}
+
+export {}
+
+//// [b.ts]
+declare let dec: any;
+
+@dec export class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class {}
+
+
+//// [a.js]
+"use strict";
+var _this = this;
+Object.defineProperty(exports, "__esModule", { value: true });
+var C = function () {
+    var _classDecorators = [dec];
+    var _classDescriptor;
+    var _classExtraInitializers = [];
+    var _classThis;
+    var C = _classThis = /** @class */ (function () {
+        function C_1() {
+        }
+        return C_1;
+    }());
+    __setFunctionName(_classThis, "C");
+    (function () {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+}();
+//// [b.js]
+"use strict";
+var _this = this;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.C = void 0;
+var C = exports.C = function () {
+    var _classDecorators = [dec];
+    var _classDescriptor;
+    var _classExtraInitializers = [];
+    var _classThis;
+    var C = _classThis = /** @class */ (function () {
+        function C_1() {
+        }
+        return C_1;
+    }());
+    __setFunctionName(_classThis, "C");
+    (function () {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+}();
+//// [c.js]
+"use strict";
+var _this = this;
+Object.defineProperty(exports, "__esModule", { value: true });
+var default_1 = function () {
+    var _classDecorators = [dec];
+    var _classDescriptor;
+    var _classExtraInitializers = [];
+    var _classThis;
+    var default_1 = _classThis = /** @class */ (function () {
+        function default_1() {
+        }
+        return default_1;
+    }());
+    (function () {
+        __setFunctionName(_classThis, "default_1");
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        default_1 = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return default_1 = _classThis;
+}();
+exports.default = default_1;
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=esnext).js
new file mode 100644
index 0000000000000..6c0889fa38717
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName(target=esnext).js
@@ -0,0 +1,38 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName.ts] ////
+
+//// [a.ts]
+declare let dec: any;
+
+@dec class C {}
+
+export {}
+
+//// [b.ts]
+declare let dec: any;
+
+@dec export class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class {}
+
+
+//// [a.js]
+@dec
+class C {
+}
+export {};
+//// [b.js]
+@dec
+export class C {
+}
+//// [c.js]
+@dec
+export default class {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName1.js b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName1.js
new file mode 100644
index 0000000000000..2f0656c9ea6a8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-setFunctionName1.js
@@ -0,0 +1,72 @@
+//// [tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName1.ts] ////
+
+//// [a.ts]
+declare let dec: any;
+
+@dec class C {}
+
+export {}
+
+//// [b.ts]
+declare let dec: any;
+
+@dec export class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class C {}
+
+//// [c.ts]
+declare let dec: any;
+
+@dec export default class {}
+
+
+//// [a.js]
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C;
+})();
+export {};
+//// [b.js]
+export let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C;
+})();
+//// [c.js]
+export default (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var default_1 = class {
+        static {
+            __setFunctionName(this, "default");
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, _classExtraInitializers);
+            default_1 = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return default_1;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es2015).js
new file mode 100644
index 0000000000000..aaf0a0957d941
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es2015).js
@@ -0,0 +1,24 @@
+//// [esDecorators-classDeclaration-simpleTransformation.ts]
+declare let dec: any;
+
+@dec
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-simpleTransformation.js]
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = _classThis = class {
+    };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es2022).js
new file mode 100644
index 0000000000000..898d229014ae0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es2022).js
@@ -0,0 +1,23 @@
+//// [esDecorators-classDeclaration-simpleTransformation.ts]
+declare let dec: any;
+
+@dec
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-simpleTransformation.js]
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es5).js b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es5).js
new file mode 100644
index 0000000000000..82754d7ead7e2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=es5).js
@@ -0,0 +1,28 @@
+//// [esDecorators-classDeclaration-simpleTransformation.ts]
+declare let dec: any;
+
+@dec
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-simpleTransformation.js]
+var _this = this;
+var C = function () {
+    var _classDecorators = [dec];
+    var _classDescriptor;
+    var _classExtraInitializers = [];
+    var _classThis;
+    var C = _classThis = /** @class */ (function () {
+        function C_1() {
+        }
+        return C_1;
+    }());
+    __setFunctionName(_classThis, "C");
+    (function () {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+}();
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=esnext).js
new file mode 100644
index 0000000000000..a2ce1a1cc6043
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-simpleTransformation(target=esnext).js
@@ -0,0 +1,12 @@
+//// [esDecorators-classDeclaration-simpleTransformation.ts]
+declare let dec: any;
+
+@dec
+class C {
+}
+
+
+//// [esDecorators-classDeclaration-simpleTransformation.js]
+@dec
+class C {
+}
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).js b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).js
new file mode 100644
index 0000000000000..2f78b238a0782
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).js
@@ -0,0 +1,187 @@
+//// [esDecorators-classDeclaration-sourceMap.ts]
+declare var dec: any;
+
+@dec
+@dec
+class C {
+    @dec
+    @dec
+    method() {}
+
+    @dec
+    @dec
+    get x() { return 1; }
+
+    @dec
+    @dec
+    set x(value: number) { }
+
+    @dec
+    @dec
+    y = 1;
+
+    @dec
+    @dec
+    accessor z = 1;
+
+    @dec
+    @dec
+    static #method() {}
+
+    @dec
+    @dec
+    static get #x() { return 1; }
+
+    @dec
+    @dec
+    static set #x(value: number) { }
+
+    @dec
+    @dec
+    static #y = 1;
+
+    @dec
+    @dec
+    static accessor #z = 1;
+}
+
+
+//// [esDecorators-classDeclaration-sourceMap.js]
+var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+    var _, done = false;
+    for (var i = decorators.length - 1; i >= 0; i--) {
+        var context = {};
+        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+        if (kind === "accessor") {
+            if (result === void 0) continue;
+            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+            if (_ = accept(result.get)) descriptor.get = _;
+            if (_ = accept(result.set)) descriptor.set = _;
+            if (_ = accept(result.init)) initializers.push(_);
+        }
+        else if (_ = accept(result)) {
+            if (kind === "field") initializers.push(_);
+            else descriptor[key] = _;
+        }
+    }
+    if (target) Object.defineProperty(target, contextIn.name, descriptor);
+    done = true;
+};
+var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
+    var useValue = arguments.length > 2;
+    for (var i = 0; i < initializers.length; i++) {
+        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+    }
+    return useValue ? value : void 0;
+};
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
+var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+};
+var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
+    if (kind === "m") throw new TypeError("Private method is not writable");
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+};
+let C = (() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set, _z_1_accessor_storage;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = _classThis = class {
+        constructor() {
+            this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+            _z_1_accessor_storage.set(this, __runInitializers(this, _z_initializers, 1));
+        }
+        method() { }
+        get x() { return 1; }
+        set x(value) { }
+        get z() { return __classPrivateFieldGet(this, _z_1_accessor_storage, "f"); }
+        set z(value) { __classPrivateFieldSet(this, _z_1_accessor_storage, value, "f"); }
+    };
+    _z_1_accessor_storage = new WeakMap();
+    _method_get = function _method_get() { return _static_private_method_descriptor.value; };
+    _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); };
+    _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); };
+    _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); };
+    _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        _method_decorators = [dec, dec];
+        _get_x_decorators = [dec, dec];
+        _set_x_decorators = [dec, dec];
+        _y_decorators = [dec, dec];
+        _z_decorators = [dec, dec];
+        _static_private_method_decorators = [dec, dec];
+        _static_private_get_x_decorators = [dec, dec];
+        _static_private_set_x_decorators = [dec, dec];
+        _static_private_y_decorators = [dec, dec];
+        _static_private_z_decorators = [dec, dec];
+        __esDecorate(_classThis, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(_classThis, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+        __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+        __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+        __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _staticExtraInitializers);
+    })();
+    _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+    _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
+//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map
+
+//// [esDecorators-classDeclaration-sourceMap.d.ts]
+declare var dec: any;
+declare class C {
+    #private;
+    method(): void;
+    get x(): number;
+    set x(value: number);
+    y: number;
+    accessor z: number;
+}
+//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.d.ts.map
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).js.map b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).js.map
new file mode 100644
index 0000000000000..3bb8953653583
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).js.map
@@ -0,0 +1,7 @@
+//// [esDecorators-classDeclaration-sourceMap.js.map]
+{"version":3,"file":"esDecorators-classDeclaration-sourceMap.js","sourceRoot":"","sources":["esDecorators-classDeclaration-sourceMap.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;IAIM,CAAC;;4BAFN,GAAG,EACH,GAAG;;;;;;;;;;;;;;;;;;;;;;;;QACE,CAAC;;YAeH,MAAC,kGAAG,CAAC,GAAC;YAIG,yEAAI,CAAC,GAAC;QAqBnB,CAAC;QArCG,MAAM,KAAI,CAAC;QAIX,IAAI,CAAC,KAAK,OAAO,CAAC,CAAC,CAAC,CAAC;QAIrB,IAAI,CAAC,CAAC,KAAa,IAAI,CAAC;QAQxB,IAAS,CAAC,uEAAK;QAAf,IAAS,CAAC,4EAAK;;;;;;;;;;8BAlBd,GAAG,EACH,GAAG;6BAGH,GAAG,EACH,GAAG;6BAGH,GAAG,EACH,GAAG;yBAGH,GAAG,EACH,GAAG;yBAGH,GAAG,EACH,GAAG;6CAGH,GAAG,EACH,GAAG;4CAGH,GAAG,EACH,GAAG;4CAGH,GAAG,EACH,GAAG;wCAGH,GAAG,EACH,GAAG;wCAGH,GAAG,EACH,GAAG;QAfJ,+DAAA,yBAAA,cAAkB,CAAC,YAAA,yIAAA;QAInB,8DAAA,uBAAA,cAAkB,OAAO,CAAC,CAAC,CAAC,CAAC,cAAA,mIAAA;QAI7B,8DAAA,uBAAA,UAAc,KAAa,IAAI,CAAC,cAAA,mIAAA;QAQhC,0DAAA,uBAAA,gGAAuB,cAAA,EAAvB,uBAAA,qGAAuB,cAAA,2JAAA;QApCvB,wJAAW;QAIX,kJAAqB;QAIrB,kJAAwB;QAQxB,2JAAe;QAgBf,6KAAc;QApBd,kJAAM;QAfV,wJAwCC;QAxCK,CAAC;QAAD,wDAAC;;IAmCI,4EAAK,CAAC,GAAJ,CAAK;IAIE,6FAAK,CAAC,GAAJ,CAAK;;QAvCrB,uDAAC;;WAAD,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
    var _, done = false;
    for (var i = decorators.length - 1; i >= 0; i--) {
        var context = {};
        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
        if (kind === "accessor") {
            if (result === void 0) continue;
            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
            if (_ = accept(result.get)) descriptor.get = _;
            if (_ = accept(result.set)) descriptor.set = _;
            if (_ = accept(result.init)) initializers.push(_);
        }
        else if (_ = accept(result)) {
            if (kind === "field") initializers.push(_);
            else descriptor[key] = _;
        }
    }
    if (target) Object.defineProperty(target, contextIn.name, descriptor);
    done = true;
};
var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
    var useValue = arguments.length > 2;
    for (var i = 0; i < initializers.length; i++) {
        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
    }
    return useValue ? value : void 0;
};
var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
let C = (() => {
    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set, _z_1_accessor_storage;
    let _classDecorators = [dec, dec];
    let _classDescriptor;
    let _classExtraInitializers = [];
    let _classThis;
    let _staticExtraInitializers = [];
    let _instanceExtraInitializers = [];
    let _static_private_method_decorators;
    let _static_private_method_descriptor;
    let _static_private_get_x_decorators;
    let _static_private_get_x_descriptor;
    let _static_private_set_x_decorators;
    let _static_private_set_x_descriptor;
    let _static_private_y_decorators;
    let _static_private_y_initializers = [];
    let _static_private_z_decorators;
    let _static_private_z_initializers = [];
    let _static_private_z_descriptor;
    let _method_decorators;
    let _get_x_decorators;
    let _set_x_decorators;
    let _y_decorators;
    let _y_initializers = [];
    let _z_decorators;
    let _z_initializers = [];
    var C = _classThis = class {
        constructor() {
            this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
            _z_1_accessor_storage.set(this, __runInitializers(this, _z_initializers, 1));
        }
        method() { }
        get x() { return 1; }
        set x(value) { }
        get z() { return __classPrivateFieldGet(this, _z_1_accessor_storage, "f"); }
        set z(value) { __classPrivateFieldSet(this, _z_1_accessor_storage, value, "f"); }
    };
    _z_1_accessor_storage = new WeakMap();
    _method_get = function _method_get() { return _static_private_method_descriptor.value; };
    _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); };
    _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); };
    _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); };
    _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); };
    __setFunctionName(_classThis, "C");
    (() => {
        _method_decorators = [dec, dec];
        _get_x_decorators = [dec, dec];
        _set_x_decorators = [dec, dec];
        _y_decorators = [dec, dec];
        _z_decorators = [dec, dec];
        _static_private_method_decorators = [dec, dec];
        _static_private_get_x_decorators = [dec, dec];
        _static_private_set_x_decorators = [dec, dec];
        _static_private_y_decorators = [dec, dec];
        _static_private_z_decorators = [dec, dec];
        __esDecorate(_classThis, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
        __esDecorate(_classThis, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
        __esDecorate(_classThis, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
        __esDecorate(_classThis, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(_classThis, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
        __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
        __esDecorate(_classThis, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
        __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
        __esDecorate(_classThis, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
        __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
        __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
        C = _classThis = _classDescriptor.value;
        __runInitializers(_classThis, _staticExtraInitializers);
    })();
    _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
    _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
    (() => {
        __runInitializers(_classThis, _classExtraInitializers);
    })();
    return C = _classThis;
})();
//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map,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,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
+
+//// [esDecorators-classDeclaration-sourceMap.d.ts.map]
+{"version":3,"file":"esDecorators-classDeclaration-sourceMap.d.ts","sourceRoot":"","sources":["esDecorators-classDeclaration-sourceMap.ts"],"names":[],"mappings":"AAAA,OAAO,CAAC,IAAI,GAAG,EAAE,GAAG,CAAC;AAErB,cAEM,CAAC;;IAGH,MAAM;IAEN,IAEI,CAAC,IAIQ,MAAM,CAJE;IAErB,IAEI,CAAC,CAAC,KAAK,EAAE,MAAM,EAAK;IAIxB,CAAC,SAAK;IAIN,QAAQ,CAAC,CAAC,SAAK;CAqBlB"}
+//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSB2YXIgZGVjOiBhbnk7DQpkZWNsYXJlIGNsYXNzIEMgew0KICAgICNwcml2YXRlOw0KICAgIG1ldGhvZCgpOiB2b2lkOw0KICAgIGdldCB4KCk6IG51bWJlcjsNCiAgICBzZXQgeCh2YWx1ZTogbnVtYmVyKTsNCiAgICB5OiBudW1iZXI7DQogICAgYWNjZXNzb3IgejogbnVtYmVyOw0KfQ0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9ZXNEZWNvcmF0b3JzLWNsYXNzRGVjbGFyYXRpb24tc291cmNlTWFwLmQudHMubWFw,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZXNEZWNvcmF0b3JzLWNsYXNzRGVjbGFyYXRpb24tc291cmNlTWFwLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJlc0RlY29yYXRvcnMtY2xhc3NEZWNsYXJhdGlvbi1zb3VyY2VNYXAudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsT0FBTyxDQUFDLElBQUksR0FBRyxFQUFFLEdBQUcsQ0FBQztBQUVyQixjQUVNLENBQUM7O0lBR0gsTUFBTTtJQUVOLElBRUksQ0FBQyxJQUlRLE1BQU0sQ0FKRTtJQUVyQixJQUVJLENBQUMsQ0FBQyxLQUFLLEVBQUUsTUFBTSxFQUFLO0lBSXhCLENBQUMsU0FBSztJQUlOLFFBQVEsQ0FBQyxDQUFDLFNBQUs7Q0FxQmxCIn0=,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
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).sourcemap.txt b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).sourcemap.txt
new file mode 100644
index 0000000000000..1a6b9faa99d9e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).sourcemap.txt
@@ -0,0 +1,1077 @@
+===================================================================
+JsFile: esDecorators-classDeclaration-sourceMap.js
+mapUrl: esDecorators-classDeclaration-sourceMap.js.map
+sourceRoot: 
+sources: esDecorators-classDeclaration-sourceMap.ts
+===================================================================
+-------------------------------------------------------------------
+emittedFile:tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.js
+sourceFile:esDecorators-classDeclaration-sourceMap.ts
+-------------------------------------------------------------------
+>>>var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+>>>    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+>>>    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+>>>    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+>>>    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+>>>    var _, done = false;
+>>>    for (var i = decorators.length - 1; i >= 0; i--) {
+>>>        var context = {};
+>>>        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+>>>        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+>>>        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+>>>        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+>>>        if (kind === "accessor") {
+>>>            if (result === void 0) continue;
+>>>            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+>>>            if (_ = accept(result.get)) descriptor.get = _;
+>>>            if (_ = accept(result.set)) descriptor.set = _;
+>>>            if (_ = accept(result.init)) initializers.push(_);
+>>>        }
+>>>        else if (_ = accept(result)) {
+>>>            if (kind === "field") initializers.push(_);
+>>>            else descriptor[key] = _;
+>>>        }
+>>>    }
+>>>    if (target) Object.defineProperty(target, contextIn.name, descriptor);
+>>>    done = true;
+>>>};
+>>>var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
+>>>    var useValue = arguments.length > 2;
+>>>    for (var i = 0; i < initializers.length; i++) {
+>>>        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+>>>    }
+>>>    return useValue ? value : void 0;
+>>>};
+>>>var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+>>>    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+>>>    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+>>>};
+>>>var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
+>>>    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+>>>    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+>>>    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+>>>};
+>>>var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
+>>>    if (kind === "m") throw new TypeError("Private method is not writable");
+>>>    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+>>>    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+>>>    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+>>>};
+>>>let C = (() => {
+1 >^^^^
+2 >    ^
+3 >     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >declare var dec: any;
+  >
+  >@dec
+  >@dec
+  >class 
+2 >    C
+1 >Emitted(50, 5) Source(5, 7) + SourceIndex(0)
+2 >Emitted(50, 6) Source(5, 8) + SourceIndex(0)
+---
+>>>    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set, _z_1_accessor_storage;
+>>>    let _classDecorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                            ^^^
+3 >                               ^^
+4 >                                 ^^^
+1->
+2 >                            dec
+3 >                               
+  >                               @
+4 >                                 dec
+1->Emitted(52, 29) Source(3, 2) + SourceIndex(0)
+2 >Emitted(52, 32) Source(3, 5) + SourceIndex(0)
+3 >Emitted(52, 34) Source(4, 2) + SourceIndex(0)
+4 >Emitted(52, 37) Source(4, 5) + SourceIndex(0)
+---
+>>>    let _classDescriptor;
+>>>    let _classExtraInitializers = [];
+>>>    let _classThis;
+>>>    let _staticExtraInitializers = [];
+>>>    let _instanceExtraInitializers = [];
+>>>    let _static_private_method_decorators;
+>>>    let _static_private_method_descriptor;
+>>>    let _static_private_get_x_decorators;
+>>>    let _static_private_get_x_descriptor;
+>>>    let _static_private_set_x_decorators;
+>>>    let _static_private_set_x_descriptor;
+>>>    let _static_private_y_decorators;
+>>>    let _static_private_y_initializers = [];
+>>>    let _static_private_z_decorators;
+>>>    let _static_private_z_initializers = [];
+>>>    let _static_private_z_descriptor;
+>>>    let _method_decorators;
+>>>    let _get_x_decorators;
+>>>    let _set_x_decorators;
+>>>    let _y_decorators;
+>>>    let _y_initializers = [];
+>>>    let _z_decorators;
+>>>    let _z_initializers = [];
+>>>    var C = _classThis = class {
+1 >^^^^^^^^
+2 >        ^
+3 >         ^^^^^^^^^^^^^^^->
+1 >
+  >class 
+2 >        C
+1 >Emitted(76, 9) Source(5, 7) + SourceIndex(0)
+2 >Emitted(76, 10) Source(5, 8) + SourceIndex(0)
+---
+>>>        constructor() {
+>>>            this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+1->^^^^^^^^^^^^
+2 >            ^^^^^^
+3 >                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                                                    ^
+5 >                                                                                                                     ^^^
+1-> {
+  >    @dec
+  >    @dec
+  >    method() {}
+  >
+  >    @dec
+  >    @dec
+  >    get x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    set x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            y
+3 >                   = 
+4 >                                                                                                                    1
+5 >                                                                                                                     ;
+1->Emitted(78, 13) Source(20, 5) + SourceIndex(0)
+2 >Emitted(78, 19) Source(20, 6) + SourceIndex(0)
+3 >Emitted(78, 117) Source(20, 9) + SourceIndex(0)
+4 >Emitted(78, 118) Source(20, 10) + SourceIndex(0)
+5 >Emitted(78, 121) Source(20, 11) + SourceIndex(0)
+---
+>>>            _z_1_accessor_storage.set(this, __runInitializers(this, _z_initializers, 1));
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                     ^
+4 >                                                                                      ^^^
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    accessor 
+2 >            z = 
+3 >                                                                                     1
+4 >                                                                                      ;
+1 >Emitted(79, 13) Source(24, 14) + SourceIndex(0)
+2 >Emitted(79, 86) Source(24, 18) + SourceIndex(0)
+3 >Emitted(79, 87) Source(24, 19) + SourceIndex(0)
+4 >Emitted(79, 90) Source(24, 20) + SourceIndex(0)
+---
+>>>        }
+1 >^^^^^^^^
+2 >        ^
+3 >         ^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    static #y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    static accessor #z = 1;
+  >
+2 >        }
+1 >Emitted(80, 9) Source(45, 1) + SourceIndex(0)
+2 >Emitted(80, 10) Source(45, 2) + SourceIndex(0)
+---
+>>>        method() { }
+1->^^^^^^^^
+2 >        ^^^^^^
+3 >              ^^^^^
+4 >                   ^
+5 >                    ^^^^^^^^^^->
+1->
+2 >        method
+3 >              () {
+4 >                   }
+1->Emitted(81, 9) Source(8, 5) + SourceIndex(0)
+2 >Emitted(81, 15) Source(8, 11) + SourceIndex(0)
+3 >Emitted(81, 20) Source(8, 15) + SourceIndex(0)
+4 >Emitted(81, 21) Source(8, 16) + SourceIndex(0)
+---
+>>>        get x() { return 1; }
+1->^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^^^^^
+5 >                  ^^^^^^^
+6 >                         ^
+7 >                          ^
+8 >                           ^
+9 >                            ^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        get 
+3 >            x
+4 >             () { 
+5 >                  return 
+6 >                         1
+7 >                          ;
+8 >                            
+9 >                            }
+1->Emitted(82, 9) Source(12, 5) + SourceIndex(0)
+2 >Emitted(82, 13) Source(12, 9) + SourceIndex(0)
+3 >Emitted(82, 14) Source(12, 10) + SourceIndex(0)
+4 >Emitted(82, 19) Source(12, 15) + SourceIndex(0)
+5 >Emitted(82, 26) Source(12, 22) + SourceIndex(0)
+6 >Emitted(82, 27) Source(12, 23) + SourceIndex(0)
+7 >Emitted(82, 28) Source(12, 24) + SourceIndex(0)
+8 >Emitted(82, 29) Source(12, 25) + SourceIndex(0)
+9 >Emitted(82, 30) Source(12, 26) + SourceIndex(0)
+---
+>>>        set x(value) { }
+1 >^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^
+5 >              ^^^^^
+6 >                   ^^^^
+7 >                       ^
+8 >                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        set 
+3 >            x
+4 >             (
+5 >              value: number
+6 >                   ) { 
+7 >                       }
+1 >Emitted(83, 9) Source(16, 5) + SourceIndex(0)
+2 >Emitted(83, 13) Source(16, 9) + SourceIndex(0)
+3 >Emitted(83, 14) Source(16, 10) + SourceIndex(0)
+4 >Emitted(83, 15) Source(16, 11) + SourceIndex(0)
+5 >Emitted(83, 20) Source(16, 24) + SourceIndex(0)
+6 >Emitted(83, 24) Source(16, 28) + SourceIndex(0)
+7 >Emitted(83, 25) Source(16, 29) + SourceIndex(0)
+---
+>>>        get z() { return __classPrivateFieldGet(this, _z_1_accessor_storage, "f"); }
+1->^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+5 >                                                                                    ^^^^^^->
+1->
+  >
+  >    @dec
+  >    @dec
+  >    y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        accessor 
+3 >            z
+4 >              = 1;
+1->Emitted(84, 9) Source(24, 5) + SourceIndex(0)
+2 >Emitted(84, 13) Source(24, 14) + SourceIndex(0)
+3 >Emitted(84, 14) Source(24, 15) + SourceIndex(0)
+4 >Emitted(84, 85) Source(24, 20) + SourceIndex(0)
+---
+>>>        set z(value) { __classPrivateFieldSet(this, _z_1_accessor_storage, value, "f"); }
+1->^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+2 >        accessor 
+3 >            z
+4 >              = 1;
+1->Emitted(85, 9) Source(24, 5) + SourceIndex(0)
+2 >Emitted(85, 13) Source(24, 14) + SourceIndex(0)
+3 >Emitted(85, 14) Source(24, 15) + SourceIndex(0)
+4 >Emitted(85, 90) Source(24, 20) + SourceIndex(0)
+---
+>>>    };
+>>>    _z_1_accessor_storage = new WeakMap();
+>>>    _method_get = function _method_get() { return _static_private_method_descriptor.value; };
+>>>    _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); };
+>>>    _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); };
+>>>    _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); };
+>>>    _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); };
+>>>    __setFunctionName(_classThis, "C");
+>>>    (() => {
+>>>        _method_decorators = [dec, dec];
+1 >^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                              ^^^
+3 >                                 ^^
+4 >                                   ^^^
+5 >                                      ^^->
+1 >
+2 >                              dec
+3 >                                 
+  >                                     @
+4 >                                   dec
+1 >Emitted(95, 31) Source(6, 6) + SourceIndex(0)
+2 >Emitted(95, 34) Source(6, 9) + SourceIndex(0)
+3 >Emitted(95, 36) Source(7, 6) + SourceIndex(0)
+4 >Emitted(95, 39) Source(7, 9) + SourceIndex(0)
+---
+>>>        _get_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                             ^^^
+3 >                                ^^
+4 >                                  ^^^
+5 >                                     ^^^->
+1->
+  >    method() {}
+  >
+  >    @
+2 >                             dec
+3 >                                
+  >                                    @
+4 >                                  dec
+1->Emitted(96, 30) Source(10, 6) + SourceIndex(0)
+2 >Emitted(96, 33) Source(10, 9) + SourceIndex(0)
+3 >Emitted(96, 35) Source(11, 6) + SourceIndex(0)
+4 >Emitted(96, 38) Source(11, 9) + SourceIndex(0)
+---
+>>>        _set_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                             ^^^
+3 >                                ^^
+4 >                                  ^^^
+1->
+  >    get x() { return 1; }
+  >
+  >    @
+2 >                             dec
+3 >                                
+  >                                    @
+4 >                                  dec
+1->Emitted(97, 30) Source(14, 6) + SourceIndex(0)
+2 >Emitted(97, 33) Source(14, 9) + SourceIndex(0)
+3 >Emitted(97, 35) Source(15, 6) + SourceIndex(0)
+4 >Emitted(97, 38) Source(15, 9) + SourceIndex(0)
+---
+>>>        _y_decorators = [dec, dec];
+1 >^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                         ^^^
+3 >                            ^^
+4 >                              ^^^
+5 >                                 ^^^->
+1 >
+  >    set x(value: number) { }
+  >
+  >    @
+2 >                         dec
+3 >                            
+  >                                @
+4 >                              dec
+1 >Emitted(98, 26) Source(18, 6) + SourceIndex(0)
+2 >Emitted(98, 29) Source(18, 9) + SourceIndex(0)
+3 >Emitted(98, 31) Source(19, 6) + SourceIndex(0)
+4 >Emitted(98, 34) Source(19, 9) + SourceIndex(0)
+---
+>>>        _z_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                         ^^^
+3 >                            ^^
+4 >                              ^^^
+5 >                                 ^^^^^^^^^^^^^^^^^^^^^^^->
+1->
+  >    y = 1;
+  >
+  >    @
+2 >                         dec
+3 >                            
+  >                                @
+4 >                              dec
+1->Emitted(99, 26) Source(22, 6) + SourceIndex(0)
+2 >Emitted(99, 29) Source(22, 9) + SourceIndex(0)
+3 >Emitted(99, 31) Source(23, 6) + SourceIndex(0)
+4 >Emitted(99, 34) Source(23, 9) + SourceIndex(0)
+---
+>>>        _static_private_method_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                             ^^^
+3 >                                                ^^
+4 >                                                  ^^^
+5 >                                                     ^^->
+1->
+  >    accessor z = 1;
+  >
+  >    @
+2 >                                             dec
+3 >                                                
+  >                                                    @
+4 >                                                  dec
+1->Emitted(100, 46) Source(26, 6) + SourceIndex(0)
+2 >Emitted(100, 49) Source(26, 9) + SourceIndex(0)
+3 >Emitted(100, 51) Source(27, 6) + SourceIndex(0)
+4 >Emitted(100, 54) Source(27, 9) + SourceIndex(0)
+---
+>>>        _static_private_get_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                            ^^^
+3 >                                               ^^
+4 >                                                 ^^^
+5 >                                                    ^^^->
+1->
+  >    static #method() {}
+  >
+  >    @
+2 >                                            dec
+3 >                                               
+  >                                                   @
+4 >                                                 dec
+1->Emitted(101, 45) Source(30, 6) + SourceIndex(0)
+2 >Emitted(101, 48) Source(30, 9) + SourceIndex(0)
+3 >Emitted(101, 50) Source(31, 6) + SourceIndex(0)
+4 >Emitted(101, 53) Source(31, 9) + SourceIndex(0)
+---
+>>>        _static_private_set_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                            ^^^
+3 >                                               ^^
+4 >                                                 ^^^
+1->
+  >    static get #x() { return 1; }
+  >
+  >    @
+2 >                                            dec
+3 >                                               
+  >                                                   @
+4 >                                                 dec
+1->Emitted(102, 45) Source(34, 6) + SourceIndex(0)
+2 >Emitted(102, 48) Source(34, 9) + SourceIndex(0)
+3 >Emitted(102, 50) Source(35, 6) + SourceIndex(0)
+4 >Emitted(102, 53) Source(35, 9) + SourceIndex(0)
+---
+>>>        _static_private_y_decorators = [dec, dec];
+1 >^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                        ^^^
+3 >                                           ^^
+4 >                                             ^^^
+5 >                                                ^^^->
+1 >
+  >    static set #x(value: number) { }
+  >
+  >    @
+2 >                                        dec
+3 >                                           
+  >                                               @
+4 >                                             dec
+1 >Emitted(103, 41) Source(38, 6) + SourceIndex(0)
+2 >Emitted(103, 44) Source(38, 9) + SourceIndex(0)
+3 >Emitted(103, 46) Source(39, 6) + SourceIndex(0)
+4 >Emitted(103, 49) Source(39, 9) + SourceIndex(0)
+---
+>>>        _static_private_z_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                        ^^^
+3 >                                           ^^
+4 >                                             ^^^
+5 >                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1->
+  >    static #y = 1;
+  >
+  >    @
+2 >                                        dec
+3 >                                           
+  >                                               @
+4 >                                             dec
+1->Emitted(104, 41) Source(42, 6) + SourceIndex(0)
+2 >Emitted(104, 44) Source(42, 9) + SourceIndex(0)
+3 >Emitted(104, 46) Source(43, 6) + SourceIndex(0)
+4 >Emitted(104, 49) Source(43, 9) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                                ^^^^^^^^^^^^^^
+5 >                                                                                                              ^
+6 >                                                                                                               ^^^^^^^^^^^^
+7 >                                                                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+8 >                                                                                                                                                                                                                                                                    ^^^^->
+1->
+2 >        
+3 >                                                                       
+4 >                                                                                                static #method() {
+5 >                                                                                                              }
+6 >                                                                                                               
+7 >                                                                                                                           
+1->Emitted(105, 9) Source(28, 5) + SourceIndex(0)
+2 >Emitted(105, 72) Source(28, 5) + SourceIndex(0)
+3 >Emitted(105, 97) Source(28, 5) + SourceIndex(0)
+4 >Emitted(105, 111) Source(28, 23) + SourceIndex(0)
+5 >Emitted(105, 112) Source(28, 24) + SourceIndex(0)
+6 >Emitted(105, 124) Source(28, 24) + SourceIndex(0)
+7 >Emitted(105, 261) Source(28, 24) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                      ^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                             ^^^^^^^^^^^^^^
+5 >                                                                                                           ^^^^^^^
+6 >                                                                                                                  ^
+7 >                                                                                                                   ^
+8 >                                                                                                                    ^
+9 >                                                                                                                     ^
+10>                                                                                                                      ^^^^^^^^^^^^^^
+11>                                                                                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        
+3 >                                                                      
+4 >                                                                                             static get #x() { 
+5 >                                                                                                           return 
+6 >                                                                                                                  1
+7 >                                                                                                                   ;
+8 >                                                                                                                     
+9 >                                                                                                                     }
+10>                                                                                                                      
+11>                                                                                                                                    
+1->Emitted(106, 9) Source(32, 5) + SourceIndex(0)
+2 >Emitted(106, 71) Source(32, 5) + SourceIndex(0)
+3 >Emitted(106, 94) Source(32, 5) + SourceIndex(0)
+4 >Emitted(106, 108) Source(32, 23) + SourceIndex(0)
+5 >Emitted(106, 115) Source(32, 30) + SourceIndex(0)
+6 >Emitted(106, 116) Source(32, 31) + SourceIndex(0)
+7 >Emitted(106, 117) Source(32, 32) + SourceIndex(0)
+8 >Emitted(106, 118) Source(32, 33) + SourceIndex(0)
+9 >Emitted(106, 119) Source(32, 34) + SourceIndex(0)
+10>Emitted(106, 133) Source(32, 34) + SourceIndex(0)
+11>Emitted(106, 264) Source(32, 34) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+1 >^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                      ^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                             ^^^^^^^^^^
+5 >                                                                                                       ^^^^^
+6 >                                                                                                            ^^^^
+7 >                                                                                                                ^
+8 >                                                                                                                 ^^^^^^^^^^^^^^
+9 >                                                                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+10>                                                                                                                                                                                                                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        
+3 >                                                                      
+4 >                                                                                             static set #x(
+5 >                                                                                                       value: number
+6 >                                                                                                            ) { 
+7 >                                                                                                                }
+8 >                                                                                                                 
+9 >                                                                                                                               
+1 >Emitted(107, 9) Source(36, 5) + SourceIndex(0)
+2 >Emitted(107, 71) Source(36, 5) + SourceIndex(0)
+3 >Emitted(107, 94) Source(36, 5) + SourceIndex(0)
+4 >Emitted(107, 104) Source(36, 19) + SourceIndex(0)
+5 >Emitted(107, 109) Source(36, 32) + SourceIndex(0)
+6 >Emitted(107, 113) Source(36, 36) + SourceIndex(0)
+7 >Emitted(107, 114) Source(36, 37) + SourceIndex(0)
+8 >Emitted(107, 128) Source(36, 37) + SourceIndex(0)
+9 >Emitted(107, 259) Source(36, 37) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(_classThis, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                  ^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+5 >                                                                                                                                                                                         ^^^^^^^^^^^^^^
+6 >                                                                                                                                                                                                       ^^
+7 >                                                                                                                                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^
+8 >                                                                                                                                                                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+9 >                                                                                                                                                                                                                                                                                                                                     ^^^^^^^^^^^^^^
+10>                                                                                                                                                                                                                                                                                                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    static #y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        
+3 >                                                                  
+4 >                                                                                         static accessor #z = 1;
+5 >                                                                                                                                                                                         
+6 >                                                                                                                                                                                                       
+7 >                                                                                                                                                                                                         
+8 >                                                                                                                                                                                                                                static accessor #z = 1;
+9 >                                                                                                                                                                                                                                                                                                                                     
+10>                                                                                                                                                                                                                                                                                                                                                   
+1->Emitted(108, 9) Source(44, 5) + SourceIndex(0)
+2 >Emitted(108, 67) Source(44, 5) + SourceIndex(0)
+3 >Emitted(108, 90) Source(44, 5) + SourceIndex(0)
+4 >Emitted(108, 186) Source(44, 28) + SourceIndex(0)
+5 >Emitted(108, 200) Source(44, 28) + SourceIndex(0)
+6 >Emitted(108, 202) Source(44, 5) + SourceIndex(0)
+7 >Emitted(108, 225) Source(44, 5) + SourceIndex(0)
+8 >Emitted(108, 326) Source(44, 28) + SourceIndex(0)
+9 >Emitted(108, 340) Source(44, 28) + SourceIndex(0)
+10>Emitted(108, 495) Source(44, 28) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+1 >^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1 >
+2 >        method() {}
+1 >Emitted(109, 9) Source(8, 5) + SourceIndex(0)
+2 >Emitted(109, 161) Source(8, 16) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+1 >^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                                                                          ^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        get x() { return 1; }
+1 >Emitted(110, 9) Source(12, 5) + SourceIndex(0)
+2 >Emitted(110, 155) Source(12, 26) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                                                                          ^^^^^^^^^^->
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        set x(value: number) { }
+1->Emitted(111, 9) Source(16, 5) + SourceIndex(0)
+2 >Emitted(111, 155) Source(16, 29) + SourceIndex(0)
+---
+>>>        __esDecorate(_classThis, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                                                                                   ^^^^^^^^^^^^^^^^^^^->
+1->
+  >
+  >    @dec
+  >    @dec
+  >    y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        accessor z = 1;
+1->Emitted(112, 9) Source(24, 5) + SourceIndex(0)
+2 >Emitted(112, 164) Source(24, 20) + SourceIndex(0)
+---
+>>>        __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        static #y = 1;
+1->Emitted(113, 9) Source(40, 5) + SourceIndex(0)
+2 >Emitted(113, 182) Source(40, 19) + SourceIndex(0)
+---
+>>>        __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+1 >^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                                                                          ^^^^^^^->
+1 >
+2 >        y = 1;
+1 >Emitted(114, 9) Source(20, 5) + SourceIndex(0)
+2 >Emitted(114, 155) Source(20, 11) + SourceIndex(0)
+---
+>>>        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+2 >        class C {
+  >            @dec
+  >            @dec
+  >            method() {}
+  >        
+  >            @dec
+  >            @dec
+  >            get x() { return 1; }
+  >        
+  >            @dec
+  >            @dec
+  >            set x(value: number) { }
+  >        
+  >            @dec
+  >            @dec
+  >            y = 1;
+  >        
+  >            @dec
+  >            @dec
+  >            accessor z = 1;
+  >        
+  >            @dec
+  >            @dec
+  >            static #method() {}
+  >        
+  >            @dec
+  >            @dec
+  >            static get #x() { return 1; }
+  >        
+  >            @dec
+  >            @dec
+  >            static set #x(value: number) { }
+  >        
+  >            @dec
+  >            @dec
+  >            static #y = 1;
+  >        
+  >            @dec
+  >            @dec
+  >            static accessor #z = 1;
+  >        }
+1->Emitted(115, 9) Source(5, 1) + SourceIndex(0)
+2 >Emitted(115, 161) Source(45, 2) + SourceIndex(0)
+---
+>>>        C = _classThis = _classDescriptor.value;
+1 >^^^^^^^^
+2 >        ^
+3 >         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+2 >        C
+1 >Emitted(116, 9) Source(5, 7) + SourceIndex(0)
+2 >Emitted(116, 10) Source(5, 8) + SourceIndex(0)
+---
+>>>        __runInitializers(_classThis, _staticExtraInitializers);
+1->^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+2 >        C
+1->Emitted(117, 9) Source(5, 7) + SourceIndex(0)
+2 >Emitted(117, 65) Source(5, 8) + SourceIndex(0)
+---
+>>>    })();
+>>>    _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+1 >^^^^
+2 >    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                ^
+4 >                                                                                 ^^^
+5 >                                                                                    ^
+6 >                                                                                     ^^^^^^^^^^^^^^^^^^->
+1 > {
+  >    @dec
+  >    @dec
+  >    method() {}
+  >
+  >    @dec
+  >    @dec
+  >    get x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    set x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    accessor z = 1;
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    static 
+2 >    #y = 
+3 >                                                                                1
+4 >                                                                                 
+5 >                                                                                     = 1;
+1 >Emitted(119, 5) Source(40, 12) + SourceIndex(0)
+2 >Emitted(119, 81) Source(40, 17) + SourceIndex(0)
+3 >Emitted(119, 82) Source(40, 18) + SourceIndex(0)
+4 >Emitted(119, 85) Source(40, 14) + SourceIndex(0)
+5 >Emitted(119, 86) Source(40, 19) + SourceIndex(0)
+---
+>>>    _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+1->^^^^
+2 >    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                 ^
+4 >                                                                                                  ^^^
+5 >                                                                                                     ^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    static accessor 
+2 >    #z = 
+3 >                                                                                                 1
+4 >                                                                                                  
+5 >                                                                                                      = 1;
+1->Emitted(120, 5) Source(44, 21) + SourceIndex(0)
+2 >Emitted(120, 98) Source(44, 26) + SourceIndex(0)
+3 >Emitted(120, 99) Source(44, 27) + SourceIndex(0)
+4 >Emitted(120, 102) Source(44, 23) + SourceIndex(0)
+5 >Emitted(120, 103) Source(44, 28) + SourceIndex(0)
+---
+>>>    (() => {
+>>>        __runInitializers(_classThis, _classExtraInitializers);
+1 >^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1 >
+2 >        C
+1 >Emitted(122, 9) Source(5, 7) + SourceIndex(0)
+2 >Emitted(122, 64) Source(5, 8) + SourceIndex(0)
+---
+>>>    })();
+>>>    return C = _classThis;
+1 >^^^^^^^^^^^
+2 >           ^
+1 >
+2 >           C
+1 >Emitted(124, 12) Source(5, 7) + SourceIndex(0)
+2 >Emitted(124, 13) Source(5, 8) + SourceIndex(0)
+---
+>>>})();
+>>>//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map===================================================================
+JsFile: esDecorators-classDeclaration-sourceMap.d.ts
+mapUrl: esDecorators-classDeclaration-sourceMap.d.ts.map
+sourceRoot: 
+sources: esDecorators-classDeclaration-sourceMap.ts
+===================================================================
+-------------------------------------------------------------------
+emittedFile:tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.d.ts
+sourceFile:esDecorators-classDeclaration-sourceMap.ts
+-------------------------------------------------------------------
+>>>declare var dec: any;
+1 >
+2 >^^^^^^^
+3 >       ^
+4 >        ^^^^
+5 >            ^^^
+6 >               ^^
+7 >                 ^^^
+8 >                    ^
+1 >
+2 >declare
+3 >        
+4 >        var 
+5 >            dec
+6 >               : 
+7 >                 any
+8 >                    ;
+1 >Emitted(1, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(1, 8) Source(1, 8) + SourceIndex(0)
+3 >Emitted(1, 9) Source(1, 9) + SourceIndex(0)
+4 >Emitted(1, 13) Source(1, 13) + SourceIndex(0)
+5 >Emitted(1, 16) Source(1, 16) + SourceIndex(0)
+6 >Emitted(1, 18) Source(1, 18) + SourceIndex(0)
+7 >Emitted(1, 21) Source(1, 21) + SourceIndex(0)
+8 >Emitted(1, 22) Source(1, 22) + SourceIndex(0)
+---
+>>>declare class C {
+1 >
+2 >^^^^^^^^^^^^^^
+3 >              ^
+1 >
+  >
+  >
+2 >@dec
+  >@dec
+  >class 
+3 >              C
+1 >Emitted(2, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(2, 15) Source(5, 7) + SourceIndex(0)
+3 >Emitted(2, 16) Source(5, 8) + SourceIndex(0)
+---
+>>>    #private;
+>>>    method(): void;
+1 >^^^^
+2 >    ^^^^^^
+3 >          ^^^^^^^^^^^->
+1 > {
+  >    @dec
+  >    @dec
+  >    
+2 >    method
+1 >Emitted(4, 5) Source(8, 5) + SourceIndex(0)
+2 >Emitted(4, 11) Source(8, 11) + SourceIndex(0)
+---
+>>>    get x(): number;
+1->^^^^
+2 >    ^^^^
+3 >        ^
+4 >         ^^^^
+5 >             ^^^^^^
+6 >                   ^
+7 >                    ^^^^^^->
+1->() {}
+  >
+  >    
+2 >    @dec
+  >        @dec
+  >        get 
+3 >        x
+4 >         () { return 1; }
+  >         
+  >             @dec
+  >             @dec
+  >             set x(value: 
+5 >             number
+6 >                   
+1->Emitted(5, 5) Source(10, 5) + SourceIndex(0)
+2 >Emitted(5, 9) Source(12, 9) + SourceIndex(0)
+3 >Emitted(5, 10) Source(12, 10) + SourceIndex(0)
+4 >Emitted(5, 14) Source(16, 18) + SourceIndex(0)
+5 >Emitted(5, 20) Source(16, 24) + SourceIndex(0)
+6 >Emitted(5, 21) Source(12, 26) + SourceIndex(0)
+---
+>>>    set x(value: number);
+1->^^^^
+2 >    ^^^^
+3 >        ^
+4 >         ^
+5 >          ^^^^^
+6 >               ^^
+7 >                 ^^^^^^
+8 >                       ^^
+1->
+  >
+  >    
+2 >    @dec
+  >        @dec
+  >        set 
+3 >        x
+4 >         (
+5 >          value
+6 >               : 
+7 >                 number
+8 >                       ) { }
+1->Emitted(6, 5) Source(14, 5) + SourceIndex(0)
+2 >Emitted(6, 9) Source(16, 9) + SourceIndex(0)
+3 >Emitted(6, 10) Source(16, 10) + SourceIndex(0)
+4 >Emitted(6, 11) Source(16, 11) + SourceIndex(0)
+5 >Emitted(6, 16) Source(16, 16) + SourceIndex(0)
+6 >Emitted(6, 18) Source(16, 18) + SourceIndex(0)
+7 >Emitted(6, 24) Source(16, 24) + SourceIndex(0)
+8 >Emitted(6, 26) Source(16, 29) + SourceIndex(0)
+---
+>>>    y: number;
+1 >^^^^
+2 >    ^
+3 >     ^^^^^^^^^
+4 >              ^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >    y
+3 >      = 1;
+1 >Emitted(7, 5) Source(20, 5) + SourceIndex(0)
+2 >Emitted(7, 6) Source(20, 6) + SourceIndex(0)
+3 >Emitted(7, 15) Source(20, 11) + SourceIndex(0)
+---
+>>>    accessor z: number;
+1->^^^^
+2 >    ^^^^^^^^
+3 >            ^
+4 >             ^
+5 >              ^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >    accessor
+3 >             
+4 >             z
+5 >               = 1;
+1->Emitted(8, 5) Source(24, 5) + SourceIndex(0)
+2 >Emitted(8, 13) Source(24, 13) + SourceIndex(0)
+3 >Emitted(8, 14) Source(24, 14) + SourceIndex(0)
+4 >Emitted(8, 15) Source(24, 15) + SourceIndex(0)
+5 >Emitted(8, 24) Source(24, 20) + SourceIndex(0)
+---
+>>>}
+1 >^
+2 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    static #y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    static accessor #z = 1;
+  >}
+1 >Emitted(9, 2) Source(45, 2) + SourceIndex(0)
+---
+>>>//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.d.ts.map
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).symbols b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).symbols
new file mode 100644
index 0000000000000..fdb35b4809deb
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).symbols
@@ -0,0 +1,106 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts ===
+declare var dec: any;
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+@dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+@dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+class C {
+>C : Symbol(C, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 21))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    method() {}
+>method : Symbol(C.method, Decl(esDecorators-classDeclaration-sourceMap.ts, 4, 9))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    get x() { return 1; }
+>x : Symbol(C.x, Decl(esDecorators-classDeclaration-sourceMap.ts, 7, 15), Decl(esDecorators-classDeclaration-sourceMap.ts, 11, 25))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    set x(value: number) { }
+>x : Symbol(C.x, Decl(esDecorators-classDeclaration-sourceMap.ts, 7, 15), Decl(esDecorators-classDeclaration-sourceMap.ts, 11, 25))
+>value : Symbol(value, Decl(esDecorators-classDeclaration-sourceMap.ts, 15, 10))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    y = 1;
+>y : Symbol(C.y, Decl(esDecorators-classDeclaration-sourceMap.ts, 15, 28))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    accessor z = 1;
+>z : Symbol(C.z, Decl(esDecorators-classDeclaration-sourceMap.ts, 19, 10))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static #method() {}
+>#method : Symbol(C.#method, Decl(esDecorators-classDeclaration-sourceMap.ts, 23, 19))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static get #x() { return 1; }
+>#x : Symbol(C.#x, Decl(esDecorators-classDeclaration-sourceMap.ts, 27, 23), Decl(esDecorators-classDeclaration-sourceMap.ts, 31, 33))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static set #x(value: number) { }
+>#x : Symbol(C.#x, Decl(esDecorators-classDeclaration-sourceMap.ts, 27, 23), Decl(esDecorators-classDeclaration-sourceMap.ts, 31, 33))
+>value : Symbol(value, Decl(esDecorators-classDeclaration-sourceMap.ts, 35, 18))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static #y = 1;
+>#y : Symbol(C.#y, Decl(esDecorators-classDeclaration-sourceMap.ts, 35, 36))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static accessor #z = 1;
+>#z : Symbol(C.#z, Decl(esDecorators-classDeclaration-sourceMap.ts, 39, 18))
+}
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).types b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).types
new file mode 100644
index 0000000000000..0953c47c87f0d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2015).types
@@ -0,0 +1,112 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts ===
+declare var dec: any;
+>dec : any
+
+@dec
+>dec : any
+
+@dec
+>dec : any
+
+class C {
+>C : C
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    method() {}
+>method : () => void
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    get x() { return 1; }
+>x : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    set x(value: number) { }
+>x : number
+>value : number
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    y = 1;
+>y : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    accessor z = 1;
+>z : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static #method() {}
+>#method : () => void
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static get #x() { return 1; }
+>#x : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static set #x(value: number) { }
+>#x : number
+>value : number
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static #y = 1;
+>#y : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static accessor #z = 1;
+>#z : number
+>1 : 1
+}
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).js b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).js
new file mode 100644
index 0000000000000..cc3a373d33e95
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).js
@@ -0,0 +1,184 @@
+//// [esDecorators-classDeclaration-sourceMap.ts]
+declare var dec: any;
+
+@dec
+@dec
+class C {
+    @dec
+    @dec
+    method() {}
+
+    @dec
+    @dec
+    get x() { return 1; }
+
+    @dec
+    @dec
+    set x(value: number) { }
+
+    @dec
+    @dec
+    y = 1;
+
+    @dec
+    @dec
+    accessor z = 1;
+
+    @dec
+    @dec
+    static #method() {}
+
+    @dec
+    @dec
+    static get #x() { return 1; }
+
+    @dec
+    @dec
+    static set #x(value: number) { }
+
+    @dec
+    @dec
+    static #y = 1;
+
+    @dec
+    @dec
+    static accessor #z = 1;
+}
+
+
+//// [esDecorators-classDeclaration-sourceMap.js]
+var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+    var _, done = false;
+    for (var i = decorators.length - 1; i >= 0; i--) {
+        var context = {};
+        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+        if (kind === "accessor") {
+            if (result === void 0) continue;
+            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+            if (_ = accept(result.get)) descriptor.get = _;
+            if (_ = accept(result.set)) descriptor.set = _;
+            if (_ = accept(result.init)) initializers.push(_);
+        }
+        else if (_ = accept(result)) {
+            if (kind === "field") initializers.push(_);
+            else descriptor[key] = _;
+        }
+    }
+    if (target) Object.defineProperty(target, contextIn.name, descriptor);
+    done = true;
+};
+var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
+    var useValue = arguments.length > 2;
+    for (var i = 0; i < initializers.length; i++) {
+        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+    }
+    return useValue ? value : void 0;
+};
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
+var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+};
+var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
+    if (kind === "m") throw new TypeError("Private method is not writable");
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+};
+let C = (() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = class {
+        static { __setFunctionName(this, "C"); }
+        static { _method_get = function _method_get() { return _static_private_method_descriptor.value; }, _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); }, _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); }, _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); }, _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); }; }
+        static {
+            _method_decorators = [dec, dec];
+            _get_x_decorators = [dec, dec];
+            _set_x_decorators = [dec, dec];
+            _y_decorators = [dec, dec];
+            _z_decorators = [dec, dec];
+            _static_private_method_decorators = [dec, dec];
+            _static_private_get_x_decorators = [dec, dec];
+            _static_private_set_x_decorators = [dec, dec];
+            _static_private_y_decorators = [dec, dec];
+            _static_private_z_decorators = [dec, dec];
+            __esDecorate(this, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(this, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(this, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(this, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+            __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _staticExtraInitializers);
+        }
+        method() { }
+        get x() { return 1; }
+        set x(value) { }
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+        #z_accessor_storage = __runInitializers(this, _z_initializers, 1);
+        get z() { return this.#z_accessor_storage; }
+        set z(value) { this.#z_accessor_storage = value; }
+        static {
+            _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+        }
+        static {
+            _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
+//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map
+
+//// [esDecorators-classDeclaration-sourceMap.d.ts]
+declare var dec: any;
+declare class C {
+    #private;
+    method(): void;
+    get x(): number;
+    set x(value: number);
+    y: number;
+    accessor z: number;
+}
+//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.d.ts.map
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).js.map b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).js.map
new file mode 100644
index 0000000000000..c6644aa75ec8f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).js.map
@@ -0,0 +1,7 @@
+//// [esDecorators-classDeclaration-sourceMap.js.map]
+{"version":3,"file":"esDecorators-classDeclaration-sourceMap.js","sourceRoot":"","sources":["esDecorators-classDeclaration-sourceMap.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;IAIM,CAAC;;4BAFN,GAAG,EACH,GAAG;;;;;;;;;;;;;;;;;;;;;;;;QACE,CAAC;;;;kCACF,GAAG,EACH,GAAG;iCAGH,GAAG,EACH,GAAG;iCAGH,GAAG,EACH,GAAG;6BAGH,GAAG,EACH,GAAG;6BAGH,GAAG,EACH,GAAG;iDAGH,GAAG,EACH,GAAG;gDAGH,GAAG,EACH,GAAG;gDAGH,GAAG,EACH,GAAG;4CAGH,GAAG,EACH,GAAG;4CAGH,GAAG,EACH,GAAG;YAfJ,yDAAA,yBAAA,cAAkB,CAAC,YAAA,yIAAA;YAInB,wDAAA,uBAAA,cAAkB,OAAO,CAAC,CAAC,CAAC,CAAC,cAAA,mIAAA;YAI7B,wDAAA,uBAAA,UAAc,KAAa,IAAI,CAAC,cAAA,mIAAA;YAQhC,oDAAA,uBAAA,0FAAuB,cAAA,EAAvB,uBAAA,+FAAuB,cAAA,2JAAA;YApCvB,kJAAW;YAIX,4IAAqB;YAIrB,4IAAwB;YAQxB,qJAAe;YAgBf,6KAAc;YApBd,kJAAM;YAfV,4IAwCC;YAxCK,CAAC;YAAD,wDAAC;;QAGH,MAAM,KAAI,CAAC;QAIX,IAAI,CAAC,KAAK,OAAO,CAAC,CAAC,CAAC,CAAC;QAIrB,IAAI,CAAC,CAAC,KAAa,IAAI,CAAC;QAIxB,CAAC,kGAAG,CAAC,GAAC;QAIN,+DAAa,CAAC,EAAC;QAAf,IAAS,CAAC,uCAAK;QAAf,IAAS,CAAC,6CAAK;;YAgBR,4EAAK,CAAC,GAAJ,CAAK;;;YAIE,6FAAK,CAAC,GAAJ,CAAK;;;YAvCrB,uDAAC;;;WAAD,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
    var _, done = false;
    for (var i = decorators.length - 1; i >= 0; i--) {
        var context = {};
        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
        if (kind === "accessor") {
            if (result === void 0) continue;
            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
            if (_ = accept(result.get)) descriptor.get = _;
            if (_ = accept(result.set)) descriptor.set = _;
            if (_ = accept(result.init)) initializers.push(_);
        }
        else if (_ = accept(result)) {
            if (kind === "field") initializers.push(_);
            else descriptor[key] = _;
        }
    }
    if (target) Object.defineProperty(target, contextIn.name, descriptor);
    done = true;
};
var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
    var useValue = arguments.length > 2;
    for (var i = 0; i < initializers.length; i++) {
        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
    }
    return useValue ? value : void 0;
};
var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
let C = (() => {
    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set;
    let _classDecorators = [dec, dec];
    let _classDescriptor;
    let _classExtraInitializers = [];
    let _classThis;
    let _staticExtraInitializers = [];
    let _instanceExtraInitializers = [];
    let _static_private_method_decorators;
    let _static_private_method_descriptor;
    let _static_private_get_x_decorators;
    let _static_private_get_x_descriptor;
    let _static_private_set_x_decorators;
    let _static_private_set_x_descriptor;
    let _static_private_y_decorators;
    let _static_private_y_initializers = [];
    let _static_private_z_decorators;
    let _static_private_z_initializers = [];
    let _static_private_z_descriptor;
    let _method_decorators;
    let _get_x_decorators;
    let _set_x_decorators;
    let _y_decorators;
    let _y_initializers = [];
    let _z_decorators;
    let _z_initializers = [];
    var C = class {
        static { __setFunctionName(this, "C"); }
        static { _method_get = function _method_get() { return _static_private_method_descriptor.value; }, _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); }, _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); }, _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); }, _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); }; }
        static {
            _method_decorators = [dec, dec];
            _get_x_decorators = [dec, dec];
            _set_x_decorators = [dec, dec];
            _y_decorators = [dec, dec];
            _z_decorators = [dec, dec];
            _static_private_method_decorators = [dec, dec];
            _static_private_get_x_decorators = [dec, dec];
            _static_private_set_x_decorators = [dec, dec];
            _static_private_y_decorators = [dec, dec];
            _static_private_z_decorators = [dec, dec];
            __esDecorate(this, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
            __esDecorate(this, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
            __esDecorate(this, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
            __esDecorate(this, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(this, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(this, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
            __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
            __esDecorate(this, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
            __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
            __esDecorate(this, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
            __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
            C = _classThis = _classDescriptor.value;
            __runInitializers(_classThis, _staticExtraInitializers);
        }
        method() { }
        get x() { return 1; }
        set x(value) { }
        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
        #z_accessor_storage = __runInitializers(this, _z_initializers, 1);
        get z() { return this.#z_accessor_storage; }
        set z(value) { this.#z_accessor_storage = value; }
        static {
            _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
        }
        static {
            _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
        }
        static {
            __runInitializers(_classThis, _classExtraInitializers);
        }
    };
    return C = _classThis;
})();
//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map,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,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
+
+//// [esDecorators-classDeclaration-sourceMap.d.ts.map]
+{"version":3,"file":"esDecorators-classDeclaration-sourceMap.d.ts","sourceRoot":"","sources":["esDecorators-classDeclaration-sourceMap.ts"],"names":[],"mappings":"AAAA,OAAO,CAAC,IAAI,GAAG,EAAE,GAAG,CAAC;AAErB,cAEM,CAAC;;IAGH,MAAM;IAEN,IAEI,CAAC,IAIQ,MAAM,CAJE;IAErB,IAEI,CAAC,CAAC,KAAK,EAAE,MAAM,EAAK;IAIxB,CAAC,SAAK;IAIN,QAAQ,CAAC,CAAC,SAAK;CAqBlB"}
+//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSB2YXIgZGVjOiBhbnk7DQpkZWNsYXJlIGNsYXNzIEMgew0KICAgICNwcml2YXRlOw0KICAgIG1ldGhvZCgpOiB2b2lkOw0KICAgIGdldCB4KCk6IG51bWJlcjsNCiAgICBzZXQgeCh2YWx1ZTogbnVtYmVyKTsNCiAgICB5OiBudW1iZXI7DQogICAgYWNjZXNzb3IgejogbnVtYmVyOw0KfQ0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9ZXNEZWNvcmF0b3JzLWNsYXNzRGVjbGFyYXRpb24tc291cmNlTWFwLmQudHMubWFw,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZXNEZWNvcmF0b3JzLWNsYXNzRGVjbGFyYXRpb24tc291cmNlTWFwLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJlc0RlY29yYXRvcnMtY2xhc3NEZWNsYXJhdGlvbi1zb3VyY2VNYXAudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsT0FBTyxDQUFDLElBQUksR0FBRyxFQUFFLEdBQUcsQ0FBQztBQUVyQixjQUVNLENBQUM7O0lBR0gsTUFBTTtJQUVOLElBRUksQ0FBQyxJQUlRLE1BQU0sQ0FKRTtJQUVyQixJQUVJLENBQUMsQ0FBQyxLQUFLLEVBQUUsTUFBTSxFQUFLO0lBSXhCLENBQUMsU0FBSztJQUlOLFFBQVEsQ0FBQyxDQUFDLFNBQUs7Q0FxQmxCIn0=,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
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).sourcemap.txt b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).sourcemap.txt
new file mode 100644
index 0000000000000..fc615d23c3d46
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).sourcemap.txt
@@ -0,0 +1,1009 @@
+===================================================================
+JsFile: esDecorators-classDeclaration-sourceMap.js
+mapUrl: esDecorators-classDeclaration-sourceMap.js.map
+sourceRoot: 
+sources: esDecorators-classDeclaration-sourceMap.ts
+===================================================================
+-------------------------------------------------------------------
+emittedFile:tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.js
+sourceFile:esDecorators-classDeclaration-sourceMap.ts
+-------------------------------------------------------------------
+>>>var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+>>>    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+>>>    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+>>>    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+>>>    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+>>>    var _, done = false;
+>>>    for (var i = decorators.length - 1; i >= 0; i--) {
+>>>        var context = {};
+>>>        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+>>>        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+>>>        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+>>>        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+>>>        if (kind === "accessor") {
+>>>            if (result === void 0) continue;
+>>>            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+>>>            if (_ = accept(result.get)) descriptor.get = _;
+>>>            if (_ = accept(result.set)) descriptor.set = _;
+>>>            if (_ = accept(result.init)) initializers.push(_);
+>>>        }
+>>>        else if (_ = accept(result)) {
+>>>            if (kind === "field") initializers.push(_);
+>>>            else descriptor[key] = _;
+>>>        }
+>>>    }
+>>>    if (target) Object.defineProperty(target, contextIn.name, descriptor);
+>>>    done = true;
+>>>};
+>>>var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
+>>>    var useValue = arguments.length > 2;
+>>>    for (var i = 0; i < initializers.length; i++) {
+>>>        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+>>>    }
+>>>    return useValue ? value : void 0;
+>>>};
+>>>var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+>>>    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+>>>    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+>>>};
+>>>var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
+>>>    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+>>>    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+>>>    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+>>>};
+>>>var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
+>>>    if (kind === "m") throw new TypeError("Private method is not writable");
+>>>    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+>>>    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+>>>    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+>>>};
+>>>let C = (() => {
+1 >^^^^
+2 >    ^
+3 >     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >declare var dec: any;
+  >
+  >@dec
+  >@dec
+  >class 
+2 >    C
+1 >Emitted(50, 5) Source(5, 7) + SourceIndex(0)
+2 >Emitted(50, 6) Source(5, 8) + SourceIndex(0)
+---
+>>>    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set;
+>>>    let _classDecorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                            ^^^
+3 >                               ^^
+4 >                                 ^^^
+1->
+2 >                            dec
+3 >                               
+  >                               @
+4 >                                 dec
+1->Emitted(52, 29) Source(3, 2) + SourceIndex(0)
+2 >Emitted(52, 32) Source(3, 5) + SourceIndex(0)
+3 >Emitted(52, 34) Source(4, 2) + SourceIndex(0)
+4 >Emitted(52, 37) Source(4, 5) + SourceIndex(0)
+---
+>>>    let _classDescriptor;
+>>>    let _classExtraInitializers = [];
+>>>    let _classThis;
+>>>    let _staticExtraInitializers = [];
+>>>    let _instanceExtraInitializers = [];
+>>>    let _static_private_method_decorators;
+>>>    let _static_private_method_descriptor;
+>>>    let _static_private_get_x_decorators;
+>>>    let _static_private_get_x_descriptor;
+>>>    let _static_private_set_x_decorators;
+>>>    let _static_private_set_x_descriptor;
+>>>    let _static_private_y_decorators;
+>>>    let _static_private_y_initializers = [];
+>>>    let _static_private_z_decorators;
+>>>    let _static_private_z_initializers = [];
+>>>    let _static_private_z_descriptor;
+>>>    let _method_decorators;
+>>>    let _get_x_decorators;
+>>>    let _set_x_decorators;
+>>>    let _y_decorators;
+>>>    let _y_initializers = [];
+>>>    let _z_decorators;
+>>>    let _z_initializers = [];
+>>>    var C = class {
+1 >^^^^^^^^
+2 >        ^
+3 >         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >class 
+2 >        C
+1 >Emitted(76, 9) Source(5, 7) + SourceIndex(0)
+2 >Emitted(76, 10) Source(5, 8) + SourceIndex(0)
+---
+>>>        static { __setFunctionName(this, "C"); }
+>>>        static { _method_get = function _method_get() { return _static_private_method_descriptor.value; }, _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); }, _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); }, _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); }, _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); }; }
+>>>        static {
+>>>            _method_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                  ^^^
+3 >                                     ^^
+4 >                                       ^^^
+5 >                                          ^^->
+1-> {
+  >    @
+2 >                                  dec
+3 >                                     
+  >                                         @
+4 >                                       dec
+1->Emitted(80, 35) Source(6, 6) + SourceIndex(0)
+2 >Emitted(80, 38) Source(6, 9) + SourceIndex(0)
+3 >Emitted(80, 40) Source(7, 6) + SourceIndex(0)
+4 >Emitted(80, 43) Source(7, 9) + SourceIndex(0)
+---
+>>>            _get_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                 ^^^
+3 >                                    ^^
+4 >                                      ^^^
+5 >                                         ^^^->
+1->
+  >    method() {}
+  >
+  >    @
+2 >                                 dec
+3 >                                    
+  >                                        @
+4 >                                      dec
+1->Emitted(81, 34) Source(10, 6) + SourceIndex(0)
+2 >Emitted(81, 37) Source(10, 9) + SourceIndex(0)
+3 >Emitted(81, 39) Source(11, 6) + SourceIndex(0)
+4 >Emitted(81, 42) Source(11, 9) + SourceIndex(0)
+---
+>>>            _set_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                 ^^^
+3 >                                    ^^
+4 >                                      ^^^
+1->
+  >    get x() { return 1; }
+  >
+  >    @
+2 >                                 dec
+3 >                                    
+  >                                        @
+4 >                                      dec
+1->Emitted(82, 34) Source(14, 6) + SourceIndex(0)
+2 >Emitted(82, 37) Source(14, 9) + SourceIndex(0)
+3 >Emitted(82, 39) Source(15, 6) + SourceIndex(0)
+4 >Emitted(82, 42) Source(15, 9) + SourceIndex(0)
+---
+>>>            _y_decorators = [dec, dec];
+1 >^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                             ^^^
+3 >                                ^^
+4 >                                  ^^^
+5 >                                     ^^^->
+1 >
+  >    set x(value: number) { }
+  >
+  >    @
+2 >                             dec
+3 >                                
+  >                                    @
+4 >                                  dec
+1 >Emitted(83, 30) Source(18, 6) + SourceIndex(0)
+2 >Emitted(83, 33) Source(18, 9) + SourceIndex(0)
+3 >Emitted(83, 35) Source(19, 6) + SourceIndex(0)
+4 >Emitted(83, 38) Source(19, 9) + SourceIndex(0)
+---
+>>>            _z_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                             ^^^
+3 >                                ^^
+4 >                                  ^^^
+5 >                                     ^^^^^^^^^^^^^^^^^^^^^^^->
+1->
+  >    y = 1;
+  >
+  >    @
+2 >                             dec
+3 >                                
+  >                                    @
+4 >                                  dec
+1->Emitted(84, 30) Source(22, 6) + SourceIndex(0)
+2 >Emitted(84, 33) Source(22, 9) + SourceIndex(0)
+3 >Emitted(84, 35) Source(23, 6) + SourceIndex(0)
+4 >Emitted(84, 38) Source(23, 9) + SourceIndex(0)
+---
+>>>            _static_private_method_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                                 ^^^
+3 >                                                    ^^
+4 >                                                      ^^^
+5 >                                                         ^^->
+1->
+  >    accessor z = 1;
+  >
+  >    @
+2 >                                                 dec
+3 >                                                    
+  >                                                        @
+4 >                                                      dec
+1->Emitted(85, 50) Source(26, 6) + SourceIndex(0)
+2 >Emitted(85, 53) Source(26, 9) + SourceIndex(0)
+3 >Emitted(85, 55) Source(27, 6) + SourceIndex(0)
+4 >Emitted(85, 58) Source(27, 9) + SourceIndex(0)
+---
+>>>            _static_private_get_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                                ^^^
+3 >                                                   ^^
+4 >                                                     ^^^
+5 >                                                        ^^^->
+1->
+  >    static #method() {}
+  >
+  >    @
+2 >                                                dec
+3 >                                                   
+  >                                                       @
+4 >                                                     dec
+1->Emitted(86, 49) Source(30, 6) + SourceIndex(0)
+2 >Emitted(86, 52) Source(30, 9) + SourceIndex(0)
+3 >Emitted(86, 54) Source(31, 6) + SourceIndex(0)
+4 >Emitted(86, 57) Source(31, 9) + SourceIndex(0)
+---
+>>>            _static_private_set_x_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                                ^^^
+3 >                                                   ^^
+4 >                                                     ^^^
+1->
+  >    static get #x() { return 1; }
+  >
+  >    @
+2 >                                                dec
+3 >                                                   
+  >                                                       @
+4 >                                                     dec
+1->Emitted(87, 49) Source(34, 6) + SourceIndex(0)
+2 >Emitted(87, 52) Source(34, 9) + SourceIndex(0)
+3 >Emitted(87, 54) Source(35, 6) + SourceIndex(0)
+4 >Emitted(87, 57) Source(35, 9) + SourceIndex(0)
+---
+>>>            _static_private_y_decorators = [dec, dec];
+1 >^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                            ^^^
+3 >                                               ^^
+4 >                                                 ^^^
+5 >                                                    ^^^->
+1 >
+  >    static set #x(value: number) { }
+  >
+  >    @
+2 >                                            dec
+3 >                                               
+  >                                                   @
+4 >                                                 dec
+1 >Emitted(88, 45) Source(38, 6) + SourceIndex(0)
+2 >Emitted(88, 48) Source(38, 9) + SourceIndex(0)
+3 >Emitted(88, 50) Source(39, 6) + SourceIndex(0)
+4 >Emitted(88, 53) Source(39, 9) + SourceIndex(0)
+---
+>>>            _static_private_z_decorators = [dec, dec];
+1->^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+2 >                                            ^^^
+3 >                                               ^^
+4 >                                                 ^^^
+5 >                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1->
+  >    static #y = 1;
+  >
+  >    @
+2 >                                            dec
+3 >                                               
+  >                                                   @
+4 >                                                 dec
+1->Emitted(89, 45) Source(42, 6) + SourceIndex(0)
+2 >Emitted(89, 48) Source(42, 9) + SourceIndex(0)
+3 >Emitted(89, 50) Source(43, 6) + SourceIndex(0)
+4 >Emitted(89, 53) Source(43, 9) + SourceIndex(0)
+---
+>>>            __esDecorate(this, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+1->^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                              ^^^^^^^^^^^^^^
+5 >                                                                                                            ^
+6 >                                                                                                             ^^^^^^^^^^^^
+7 >                                                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+8 >                                                                                                                                                                                                                                                                  ^^^^->
+1->
+2 >            
+3 >                                                                     
+4 >                                                                                              static #method() {
+5 >                                                                                                            }
+6 >                                                                                                             
+7 >                                                                                                                         
+1->Emitted(90, 13) Source(28, 5) + SourceIndex(0)
+2 >Emitted(90, 70) Source(28, 5) + SourceIndex(0)
+3 >Emitted(90, 95) Source(28, 5) + SourceIndex(0)
+4 >Emitted(90, 109) Source(28, 23) + SourceIndex(0)
+5 >Emitted(90, 110) Source(28, 24) + SourceIndex(0)
+6 >Emitted(90, 122) Source(28, 24) + SourceIndex(0)
+7 >Emitted(90, 259) Source(28, 24) + SourceIndex(0)
+---
+>>>            __esDecorate(this, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+1->^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                    ^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                           ^^^^^^^^^^^^^^
+5 >                                                                                                         ^^^^^^^
+6 >                                                                                                                ^
+7 >                                                                                                                 ^
+8 >                                                                                                                  ^
+9 >                                                                                                                   ^
+10>                                                                                                                    ^^^^^^^^^^^^^^
+11>                                                                                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            
+3 >                                                                    
+4 >                                                                                           static get #x() { 
+5 >                                                                                                         return 
+6 >                                                                                                                1
+7 >                                                                                                                 ;
+8 >                                                                                                                   
+9 >                                                                                                                   }
+10>                                                                                                                    
+11>                                                                                                                                  
+1->Emitted(91, 13) Source(32, 5) + SourceIndex(0)
+2 >Emitted(91, 69) Source(32, 5) + SourceIndex(0)
+3 >Emitted(91, 92) Source(32, 5) + SourceIndex(0)
+4 >Emitted(91, 106) Source(32, 23) + SourceIndex(0)
+5 >Emitted(91, 113) Source(32, 30) + SourceIndex(0)
+6 >Emitted(91, 114) Source(32, 31) + SourceIndex(0)
+7 >Emitted(91, 115) Source(32, 32) + SourceIndex(0)
+8 >Emitted(91, 116) Source(32, 33) + SourceIndex(0)
+9 >Emitted(91, 117) Source(32, 34) + SourceIndex(0)
+10>Emitted(91, 131) Source(32, 34) + SourceIndex(0)
+11>Emitted(91, 262) Source(32, 34) + SourceIndex(0)
+---
+>>>            __esDecorate(this, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                    ^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                           ^^^^^^^^^^
+5 >                                                                                                     ^^^^^
+6 >                                                                                                          ^^^^
+7 >                                                                                                              ^
+8 >                                                                                                               ^^^^^^^^^^^^^^
+9 >                                                                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+10>                                                                                                                                                                                                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            
+3 >                                                                    
+4 >                                                                                           static set #x(
+5 >                                                                                                     value: number
+6 >                                                                                                          ) { 
+7 >                                                                                                              }
+8 >                                                                                                               
+9 >                                                                                                                             
+1 >Emitted(92, 13) Source(36, 5) + SourceIndex(0)
+2 >Emitted(92, 69) Source(36, 5) + SourceIndex(0)
+3 >Emitted(92, 92) Source(36, 5) + SourceIndex(0)
+4 >Emitted(92, 102) Source(36, 19) + SourceIndex(0)
+5 >Emitted(92, 107) Source(36, 32) + SourceIndex(0)
+6 >Emitted(92, 111) Source(36, 36) + SourceIndex(0)
+7 >Emitted(92, 112) Source(36, 37) + SourceIndex(0)
+8 >Emitted(92, 126) Source(36, 37) + SourceIndex(0)
+9 >Emitted(92, 257) Source(36, 37) + SourceIndex(0)
+---
+>>>            __esDecorate(this, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(this, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(this, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+1->^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                ^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+5 >                                                                                                                                                                                 ^^^^^^^^^^^^^^
+6 >                                                                                                                                                                                               ^^
+7 >                                                                                                                                                                                                 ^^^^^^^^^^^^^^^^^^^^^^^
+8 >                                                                                                                                                                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+9 >                                                                                                                                                                                                                                                                                                                       ^^^^^^^^^^^^^^
+10>                                                                                                                                                                                                                                                                                                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    static #y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            
+3 >                                                                
+4 >                                                                                       static accessor #z = 1;
+5 >                                                                                                                                                                                 
+6 >                                                                                                                                                                                               
+7 >                                                                                                                                                                                                 
+8 >                                                                                                                                                                                                                        static accessor #z = 1;
+9 >                                                                                                                                                                                                                                                                                                                       
+10>                                                                                                                                                                                                                                                                                                                                     
+1->Emitted(93, 13) Source(44, 5) + SourceIndex(0)
+2 >Emitted(93, 65) Source(44, 5) + SourceIndex(0)
+3 >Emitted(93, 88) Source(44, 5) + SourceIndex(0)
+4 >Emitted(93, 178) Source(44, 28) + SourceIndex(0)
+5 >Emitted(93, 192) Source(44, 28) + SourceIndex(0)
+6 >Emitted(93, 194) Source(44, 5) + SourceIndex(0)
+7 >Emitted(93, 217) Source(44, 5) + SourceIndex(0)
+8 >Emitted(93, 312) Source(44, 28) + SourceIndex(0)
+9 >Emitted(93, 326) Source(44, 28) + SourceIndex(0)
+10>Emitted(93, 481) Source(44, 28) + SourceIndex(0)
+---
+>>>            __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1 >
+2 >            method() {}
+1 >Emitted(94, 13) Source(8, 5) + SourceIndex(0)
+2 >Emitted(94, 159) Source(8, 16) + SourceIndex(0)
+---
+>>>            __esDecorate(this, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                                                                        ^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            get x() { return 1; }
+1 >Emitted(95, 13) Source(12, 5) + SourceIndex(0)
+2 >Emitted(95, 153) Source(12, 26) + SourceIndex(0)
+---
+>>>            __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+1->^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                                                                        ^^^^^^^^^^->
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            set x(value: number) { }
+1->Emitted(96, 13) Source(16, 5) + SourceIndex(0)
+2 >Emitted(96, 153) Source(16, 29) + SourceIndex(0)
+---
+>>>            __esDecorate(this, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+1->^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^->
+1->
+  >
+  >    @dec
+  >    @dec
+  >    y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            accessor z = 1;
+1->Emitted(97, 13) Source(24, 5) + SourceIndex(0)
+2 >Emitted(97, 162) Source(24, 20) + SourceIndex(0)
+---
+>>>            __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+1->^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >            static #y = 1;
+1->Emitted(98, 13) Source(40, 5) + SourceIndex(0)
+2 >Emitted(98, 186) Source(40, 19) + SourceIndex(0)
+---
+>>>            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1 >
+2 >            y = 1;
+1 >Emitted(99, 13) Source(20, 5) + SourceIndex(0)
+2 >Emitted(99, 159) Source(20, 11) + SourceIndex(0)
+---
+>>>            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1 >
+2 >            class C {
+  >                @dec
+  >                @dec
+  >                method() {}
+  >            
+  >                @dec
+  >                @dec
+  >                get x() { return 1; }
+  >            
+  >                @dec
+  >                @dec
+  >                set x(value: number) { }
+  >            
+  >                @dec
+  >                @dec
+  >                y = 1;
+  >            
+  >                @dec
+  >                @dec
+  >                accessor z = 1;
+  >            
+  >                @dec
+  >                @dec
+  >                static #method() {}
+  >            
+  >                @dec
+  >                @dec
+  >                static get #x() { return 1; }
+  >            
+  >                @dec
+  >                @dec
+  >                static set #x(value: number) { }
+  >            
+  >                @dec
+  >                @dec
+  >                static #y = 1;
+  >            
+  >                @dec
+  >                @dec
+  >                static accessor #z = 1;
+  >            }
+1 >Emitted(100, 13) Source(5, 1) + SourceIndex(0)
+2 >Emitted(100, 153) Source(45, 2) + SourceIndex(0)
+---
+>>>            C = _classThis = _classDescriptor.value;
+1 >^^^^^^^^^^^^
+2 >            ^
+3 >             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+2 >            C
+1 >Emitted(101, 13) Source(5, 7) + SourceIndex(0)
+2 >Emitted(101, 14) Source(5, 8) + SourceIndex(0)
+---
+>>>            __runInitializers(_classThis, _staticExtraInitializers);
+1->^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+2 >            C
+1->Emitted(102, 13) Source(5, 7) + SourceIndex(0)
+2 >Emitted(102, 69) Source(5, 8) + SourceIndex(0)
+---
+>>>        }
+>>>        method() { }
+1 >^^^^^^^^
+2 >        ^^^^^^
+3 >              ^^^^^
+4 >                   ^
+5 >                    ^^^^^^^^^^->
+1 > {
+  >    @dec
+  >    @dec
+  >    
+2 >        method
+3 >              () {
+4 >                   }
+1 >Emitted(104, 9) Source(8, 5) + SourceIndex(0)
+2 >Emitted(104, 15) Source(8, 11) + SourceIndex(0)
+3 >Emitted(104, 20) Source(8, 15) + SourceIndex(0)
+4 >Emitted(104, 21) Source(8, 16) + SourceIndex(0)
+---
+>>>        get x() { return 1; }
+1->^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^^^^^
+5 >                  ^^^^^^^
+6 >                         ^
+7 >                          ^
+8 >                           ^
+9 >                            ^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        get 
+3 >            x
+4 >             () { 
+5 >                  return 
+6 >                         1
+7 >                          ;
+8 >                            
+9 >                            }
+1->Emitted(105, 9) Source(12, 5) + SourceIndex(0)
+2 >Emitted(105, 13) Source(12, 9) + SourceIndex(0)
+3 >Emitted(105, 14) Source(12, 10) + SourceIndex(0)
+4 >Emitted(105, 19) Source(12, 15) + SourceIndex(0)
+5 >Emitted(105, 26) Source(12, 22) + SourceIndex(0)
+6 >Emitted(105, 27) Source(12, 23) + SourceIndex(0)
+7 >Emitted(105, 28) Source(12, 24) + SourceIndex(0)
+8 >Emitted(105, 29) Source(12, 25) + SourceIndex(0)
+9 >Emitted(105, 30) Source(12, 26) + SourceIndex(0)
+---
+>>>        set x(value) { }
+1 >^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^
+5 >              ^^^^^
+6 >                   ^^^^
+7 >                       ^
+8 >                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        set 
+3 >            x
+4 >             (
+5 >              value: number
+6 >                   ) { 
+7 >                       }
+1 >Emitted(106, 9) Source(16, 5) + SourceIndex(0)
+2 >Emitted(106, 13) Source(16, 9) + SourceIndex(0)
+3 >Emitted(106, 14) Source(16, 10) + SourceIndex(0)
+4 >Emitted(106, 15) Source(16, 11) + SourceIndex(0)
+5 >Emitted(106, 20) Source(16, 24) + SourceIndex(0)
+6 >Emitted(106, 24) Source(16, 28) + SourceIndex(0)
+7 >Emitted(106, 25) Source(16, 29) + SourceIndex(0)
+---
+>>>        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+1->^^^^^^^^
+2 >        ^
+3 >         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+4 >                                                                                                           ^
+5 >                                                                                                            ^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        y
+3 >          = 
+4 >                                                                                                           1
+5 >                                                                                                            ;
+1->Emitted(107, 9) Source(20, 5) + SourceIndex(0)
+2 >Emitted(107, 10) Source(20, 6) + SourceIndex(0)
+3 >Emitted(107, 108) Source(20, 9) + SourceIndex(0)
+4 >Emitted(107, 109) Source(20, 10) + SourceIndex(0)
+5 >Emitted(107, 112) Source(20, 11) + SourceIndex(0)
+---
+>>>        #z_accessor_storage = __runInitializers(this, _z_initializers, 1);
+1 >^^^^^^^^
+2 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                       ^
+4 >                                                                        ^^
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >        accessor z = 
+3 >                                                                       1
+4 >                                                                        ;
+1 >Emitted(108, 9) Source(24, 5) + SourceIndex(0)
+2 >Emitted(108, 72) Source(24, 18) + SourceIndex(0)
+3 >Emitted(108, 73) Source(24, 19) + SourceIndex(0)
+4 >Emitted(108, 75) Source(24, 20) + SourceIndex(0)
+---
+>>>        get z() { return this.#z_accessor_storage; }
+1 >^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+5 >                                                    ^^^^^^^->
+1 >
+2 >        accessor 
+3 >            z
+4 >              = 1;
+1 >Emitted(109, 9) Source(24, 5) + SourceIndex(0)
+2 >Emitted(109, 13) Source(24, 14) + SourceIndex(0)
+3 >Emitted(109, 14) Source(24, 15) + SourceIndex(0)
+4 >Emitted(109, 53) Source(24, 20) + SourceIndex(0)
+---
+>>>        set z(value) { this.#z_accessor_storage = value; }
+1->^^^^^^^^
+2 >        ^^^^
+3 >            ^
+4 >             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1->
+2 >        accessor 
+3 >            z
+4 >              = 1;
+1->Emitted(110, 9) Source(24, 5) + SourceIndex(0)
+2 >Emitted(110, 13) Source(24, 14) + SourceIndex(0)
+3 >Emitted(110, 14) Source(24, 15) + SourceIndex(0)
+4 >Emitted(110, 59) Source(24, 20) + SourceIndex(0)
+---
+>>>        static {
+>>>            _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                        ^
+4 >                                                                                         ^^^
+5 >                                                                                            ^
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    static 
+2 >            #y = 
+3 >                                                                                        1
+4 >                                                                                         
+5 >                                                                                             = 1;
+1 >Emitted(112, 13) Source(40, 12) + SourceIndex(0)
+2 >Emitted(112, 89) Source(40, 17) + SourceIndex(0)
+3 >Emitted(112, 90) Source(40, 18) + SourceIndex(0)
+4 >Emitted(112, 93) Source(40, 14) + SourceIndex(0)
+5 >Emitted(112, 94) Source(40, 19) + SourceIndex(0)
+---
+>>>        }
+>>>        static {
+>>>            _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+3 >                                                                                                         ^
+4 >                                                                                                          ^^^
+5 >                                                                                                             ^
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    static accessor 
+2 >            #z = 
+3 >                                                                                                         1
+4 >                                                                                                          
+5 >                                                                                                              = 1;
+1 >Emitted(115, 13) Source(44, 21) + SourceIndex(0)
+2 >Emitted(115, 106) Source(44, 26) + SourceIndex(0)
+3 >Emitted(115, 107) Source(44, 27) + SourceIndex(0)
+4 >Emitted(115, 110) Source(44, 23) + SourceIndex(0)
+5 >Emitted(115, 111) Source(44, 28) + SourceIndex(0)
+---
+>>>        }
+>>>        static {
+>>>            __runInitializers(_classThis, _classExtraInitializers);
+1 >^^^^^^^^^^^^
+2 >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+1 >
+2 >            C
+1 >Emitted(118, 13) Source(5, 7) + SourceIndex(0)
+2 >Emitted(118, 68) Source(5, 8) + SourceIndex(0)
+---
+>>>        }
+>>>    };
+>>>    return C = _classThis;
+1 >^^^^^^^^^^^
+2 >           ^
+1 >
+2 >           C
+1 >Emitted(121, 12) Source(5, 7) + SourceIndex(0)
+2 >Emitted(121, 13) Source(5, 8) + SourceIndex(0)
+---
+>>>})();
+>>>//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map===================================================================
+JsFile: esDecorators-classDeclaration-sourceMap.d.ts
+mapUrl: esDecorators-classDeclaration-sourceMap.d.ts.map
+sourceRoot: 
+sources: esDecorators-classDeclaration-sourceMap.ts
+===================================================================
+-------------------------------------------------------------------
+emittedFile:tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.d.ts
+sourceFile:esDecorators-classDeclaration-sourceMap.ts
+-------------------------------------------------------------------
+>>>declare var dec: any;
+1 >
+2 >^^^^^^^
+3 >       ^
+4 >        ^^^^
+5 >            ^^^
+6 >               ^^
+7 >                 ^^^
+8 >                    ^
+1 >
+2 >declare
+3 >        
+4 >        var 
+5 >            dec
+6 >               : 
+7 >                 any
+8 >                    ;
+1 >Emitted(1, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(1, 8) Source(1, 8) + SourceIndex(0)
+3 >Emitted(1, 9) Source(1, 9) + SourceIndex(0)
+4 >Emitted(1, 13) Source(1, 13) + SourceIndex(0)
+5 >Emitted(1, 16) Source(1, 16) + SourceIndex(0)
+6 >Emitted(1, 18) Source(1, 18) + SourceIndex(0)
+7 >Emitted(1, 21) Source(1, 21) + SourceIndex(0)
+8 >Emitted(1, 22) Source(1, 22) + SourceIndex(0)
+---
+>>>declare class C {
+1 >
+2 >^^^^^^^^^^^^^^
+3 >              ^
+1 >
+  >
+  >
+2 >@dec
+  >@dec
+  >class 
+3 >              C
+1 >Emitted(2, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(2, 15) Source(5, 7) + SourceIndex(0)
+3 >Emitted(2, 16) Source(5, 8) + SourceIndex(0)
+---
+>>>    #private;
+>>>    method(): void;
+1 >^^^^
+2 >    ^^^^^^
+3 >          ^^^^^^^^^^^->
+1 > {
+  >    @dec
+  >    @dec
+  >    
+2 >    method
+1 >Emitted(4, 5) Source(8, 5) + SourceIndex(0)
+2 >Emitted(4, 11) Source(8, 11) + SourceIndex(0)
+---
+>>>    get x(): number;
+1->^^^^
+2 >    ^^^^
+3 >        ^
+4 >         ^^^^
+5 >             ^^^^^^
+6 >                   ^
+7 >                    ^^^^^^->
+1->() {}
+  >
+  >    
+2 >    @dec
+  >        @dec
+  >        get 
+3 >        x
+4 >         () { return 1; }
+  >         
+  >             @dec
+  >             @dec
+  >             set x(value: 
+5 >             number
+6 >                   
+1->Emitted(5, 5) Source(10, 5) + SourceIndex(0)
+2 >Emitted(5, 9) Source(12, 9) + SourceIndex(0)
+3 >Emitted(5, 10) Source(12, 10) + SourceIndex(0)
+4 >Emitted(5, 14) Source(16, 18) + SourceIndex(0)
+5 >Emitted(5, 20) Source(16, 24) + SourceIndex(0)
+6 >Emitted(5, 21) Source(12, 26) + SourceIndex(0)
+---
+>>>    set x(value: number);
+1->^^^^
+2 >    ^^^^
+3 >        ^
+4 >         ^
+5 >          ^^^^^
+6 >               ^^
+7 >                 ^^^^^^
+8 >                       ^^
+1->
+  >
+  >    
+2 >    @dec
+  >        @dec
+  >        set 
+3 >        x
+4 >         (
+5 >          value
+6 >               : 
+7 >                 number
+8 >                       ) { }
+1->Emitted(6, 5) Source(14, 5) + SourceIndex(0)
+2 >Emitted(6, 9) Source(16, 9) + SourceIndex(0)
+3 >Emitted(6, 10) Source(16, 10) + SourceIndex(0)
+4 >Emitted(6, 11) Source(16, 11) + SourceIndex(0)
+5 >Emitted(6, 16) Source(16, 16) + SourceIndex(0)
+6 >Emitted(6, 18) Source(16, 18) + SourceIndex(0)
+7 >Emitted(6, 24) Source(16, 24) + SourceIndex(0)
+8 >Emitted(6, 26) Source(16, 29) + SourceIndex(0)
+---
+>>>    y: number;
+1 >^^^^
+2 >    ^
+3 >     ^^^^^^^^^
+4 >              ^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >    y
+3 >      = 1;
+1 >Emitted(7, 5) Source(20, 5) + SourceIndex(0)
+2 >Emitted(7, 6) Source(20, 6) + SourceIndex(0)
+3 >Emitted(7, 15) Source(20, 11) + SourceIndex(0)
+---
+>>>    accessor z: number;
+1->^^^^
+2 >    ^^^^^^^^
+3 >            ^
+4 >             ^
+5 >              ^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >    accessor
+3 >             
+4 >             z
+5 >               = 1;
+1->Emitted(8, 5) Source(24, 5) + SourceIndex(0)
+2 >Emitted(8, 13) Source(24, 13) + SourceIndex(0)
+3 >Emitted(8, 14) Source(24, 14) + SourceIndex(0)
+4 >Emitted(8, 15) Source(24, 15) + SourceIndex(0)
+5 >Emitted(8, 24) Source(24, 20) + SourceIndex(0)
+---
+>>>}
+1 >^
+2 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    static #y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    static accessor #z = 1;
+  >}
+1 >Emitted(9, 2) Source(45, 2) + SourceIndex(0)
+---
+>>>//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.d.ts.map
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).symbols b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).symbols
new file mode 100644
index 0000000000000..fdb35b4809deb
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).symbols
@@ -0,0 +1,106 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts ===
+declare var dec: any;
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+@dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+@dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+class C {
+>C : Symbol(C, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 21))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    method() {}
+>method : Symbol(C.method, Decl(esDecorators-classDeclaration-sourceMap.ts, 4, 9))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    get x() { return 1; }
+>x : Symbol(C.x, Decl(esDecorators-classDeclaration-sourceMap.ts, 7, 15), Decl(esDecorators-classDeclaration-sourceMap.ts, 11, 25))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    set x(value: number) { }
+>x : Symbol(C.x, Decl(esDecorators-classDeclaration-sourceMap.ts, 7, 15), Decl(esDecorators-classDeclaration-sourceMap.ts, 11, 25))
+>value : Symbol(value, Decl(esDecorators-classDeclaration-sourceMap.ts, 15, 10))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    y = 1;
+>y : Symbol(C.y, Decl(esDecorators-classDeclaration-sourceMap.ts, 15, 28))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    accessor z = 1;
+>z : Symbol(C.z, Decl(esDecorators-classDeclaration-sourceMap.ts, 19, 10))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static #method() {}
+>#method : Symbol(C.#method, Decl(esDecorators-classDeclaration-sourceMap.ts, 23, 19))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static get #x() { return 1; }
+>#x : Symbol(C.#x, Decl(esDecorators-classDeclaration-sourceMap.ts, 27, 23), Decl(esDecorators-classDeclaration-sourceMap.ts, 31, 33))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static set #x(value: number) { }
+>#x : Symbol(C.#x, Decl(esDecorators-classDeclaration-sourceMap.ts, 27, 23), Decl(esDecorators-classDeclaration-sourceMap.ts, 31, 33))
+>value : Symbol(value, Decl(esDecorators-classDeclaration-sourceMap.ts, 35, 18))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static #y = 1;
+>#y : Symbol(C.#y, Decl(esDecorators-classDeclaration-sourceMap.ts, 35, 36))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static accessor #z = 1;
+>#z : Symbol(C.#z, Decl(esDecorators-classDeclaration-sourceMap.ts, 39, 18))
+}
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).types b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).types
new file mode 100644
index 0000000000000..0953c47c87f0d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=es2022).types
@@ -0,0 +1,112 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts ===
+declare var dec: any;
+>dec : any
+
+@dec
+>dec : any
+
+@dec
+>dec : any
+
+class C {
+>C : C
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    method() {}
+>method : () => void
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    get x() { return 1; }
+>x : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    set x(value: number) { }
+>x : number
+>value : number
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    y = 1;
+>y : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    accessor z = 1;
+>z : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static #method() {}
+>#method : () => void
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static get #x() { return 1; }
+>#x : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static set #x(value: number) { }
+>#x : number
+>value : number
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static #y = 1;
+>#y : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static accessor #z = 1;
+>#z : number
+>1 : 1
+}
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).js b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).js
new file mode 100644
index 0000000000000..ebd8088626496
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).js
@@ -0,0 +1,96 @@
+//// [esDecorators-classDeclaration-sourceMap.ts]
+declare var dec: any;
+
+@dec
+@dec
+class C {
+    @dec
+    @dec
+    method() {}
+
+    @dec
+    @dec
+    get x() { return 1; }
+
+    @dec
+    @dec
+    set x(value: number) { }
+
+    @dec
+    @dec
+    y = 1;
+
+    @dec
+    @dec
+    accessor z = 1;
+
+    @dec
+    @dec
+    static #method() {}
+
+    @dec
+    @dec
+    static get #x() { return 1; }
+
+    @dec
+    @dec
+    static set #x(value: number) { }
+
+    @dec
+    @dec
+    static #y = 1;
+
+    @dec
+    @dec
+    static accessor #z = 1;
+}
+
+
+//// [esDecorators-classDeclaration-sourceMap.js]
+@dec
+@dec
+class C {
+    @dec
+    @dec
+    method() { }
+    @dec
+    @dec
+    get x() { return 1; }
+    @dec
+    @dec
+    set x(value) { }
+    @dec
+    @dec
+    y = 1;
+    @dec
+    @dec
+    accessor z = 1;
+    @dec
+    @dec
+    static #method() { }
+    @dec
+    @dec
+    static get #x() { return 1; }
+    @dec
+    @dec
+    static set #x(value) { }
+    @dec
+    @dec
+    static #y = 1;
+    @dec
+    @dec
+    static accessor #z = 1;
+}
+//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map
+
+//// [esDecorators-classDeclaration-sourceMap.d.ts]
+declare var dec: any;
+declare class C {
+    #private;
+    method(): void;
+    get x(): number;
+    set x(value: number);
+    y: number;
+    accessor z: number;
+}
+//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.d.ts.map
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).js.map b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).js.map
new file mode 100644
index 0000000000000..da283b863de83
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).js.map
@@ -0,0 +1,7 @@
+//// [esDecorators-classDeclaration-sourceMap.js.map]
+{"version":3,"file":"esDecorators-classDeclaration-sourceMap.js","sourceRoot":"","sources":["esDecorators-classDeclaration-sourceMap.ts"],"names":[],"mappings":"AAEA,CAAC,GAAG;AACJ,CAAC,GAAG;MACE,CAAC;IACH,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,MAAM,KAAI,CAAC;IAEX,CAAC,GAAG;IACJ,CAAC,GAAG;QACA,CAAC,KAAK,OAAO,CAAC,CAAC,CAAC,CAAC;IAErB,CAAC,GAAG;IACJ,CAAC,GAAG;QACA,CAAC,CAAC,KAAa,IAAI,CAAC;IAExB,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,CAAC,GAAG,CAAC,CAAC;IAEN,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,QAAQ,CAAC,CAAC,GAAG,CAAC,CAAC;IAEf,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,MAAM,CAAC,OAAO,KAAI,CAAC;IAEnB,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,MAAM,KAAK,EAAE,KAAK,OAAO,CAAC,CAAC,CAAC,CAAC;IAE7B,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,MAAM,KAAK,EAAE,CAAC,KAAa,IAAI,CAAC;IAEhC,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,MAAM,CAAC,EAAE,GAAG,CAAC,CAAC;IAEd,CAAC,GAAG;IACJ,CAAC,GAAG;IACJ,MAAM,CAAC,QAAQ,CAAC,EAAE,GAAG,CAAC,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,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,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,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
+
+//// [esDecorators-classDeclaration-sourceMap.d.ts.map]
+{"version":3,"file":"esDecorators-classDeclaration-sourceMap.d.ts","sourceRoot":"","sources":["esDecorators-classDeclaration-sourceMap.ts"],"names":[],"mappings":"AAAA,OAAO,CAAC,IAAI,GAAG,EAAE,GAAG,CAAC;AAErB,cAEM,CAAC;;IAGH,MAAM;IAEN,IAEI,CAAC,IAIQ,MAAM,CAJE;IAErB,IAEI,CAAC,CAAC,KAAK,EAAE,MAAM,EAAK;IAIxB,CAAC,SAAK;IAIN,QAAQ,CAAC,CAAC,SAAK;CAqBlB"}
+//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSB2YXIgZGVjOiBhbnk7DQpkZWNsYXJlIGNsYXNzIEMgew0KICAgICNwcml2YXRlOw0KICAgIG1ldGhvZCgpOiB2b2lkOw0KICAgIGdldCB4KCk6IG51bWJlcjsNCiAgICBzZXQgeCh2YWx1ZTogbnVtYmVyKTsNCiAgICB5OiBudW1iZXI7DQogICAgYWNjZXNzb3IgejogbnVtYmVyOw0KfQ0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9ZXNEZWNvcmF0b3JzLWNsYXNzRGVjbGFyYXRpb24tc291cmNlTWFwLmQudHMubWFw,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZXNEZWNvcmF0b3JzLWNsYXNzRGVjbGFyYXRpb24tc291cmNlTWFwLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJlc0RlY29yYXRvcnMtY2xhc3NEZWNsYXJhdGlvbi1zb3VyY2VNYXAudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsT0FBTyxDQUFDLElBQUksR0FBRyxFQUFFLEdBQUcsQ0FBQztBQUVyQixjQUVNLENBQUM7O0lBR0gsTUFBTTtJQUVOLElBRUksQ0FBQyxJQUlRLE1BQU0sQ0FKRTtJQUVyQixJQUVJLENBQUMsQ0FBQyxLQUFLLEVBQUUsTUFBTSxFQUFLO0lBSXhCLENBQUMsU0FBSztJQUlOLFFBQVEsQ0FBQyxDQUFDLFNBQUs7Q0FxQmxCIn0=,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
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).sourcemap.txt b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).sourcemap.txt
new file mode 100644
index 0000000000000..bf9cda83847fa
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).sourcemap.txt
@@ -0,0 +1,745 @@
+===================================================================
+JsFile: esDecorators-classDeclaration-sourceMap.js
+mapUrl: esDecorators-classDeclaration-sourceMap.js.map
+sourceRoot: 
+sources: esDecorators-classDeclaration-sourceMap.ts
+===================================================================
+-------------------------------------------------------------------
+emittedFile:tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.js
+sourceFile:esDecorators-classDeclaration-sourceMap.ts
+-------------------------------------------------------------------
+>>>@dec
+1 >
+2 >^
+3 > ^^^
+4 >    ^->
+1 >declare var dec: any;
+  >
+  >
+2 >@
+3 > dec
+1 >Emitted(1, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(1, 2) Source(3, 2) + SourceIndex(0)
+3 >Emitted(1, 5) Source(3, 5) + SourceIndex(0)
+---
+>>>@dec
+1->
+2 >^
+3 > ^^^
+4 >    ^^^^^^->
+1->
+  >
+2 >@
+3 > dec
+1->Emitted(2, 1) Source(4, 1) + SourceIndex(0)
+2 >Emitted(2, 2) Source(4, 2) + SourceIndex(0)
+3 >Emitted(2, 5) Source(4, 5) + SourceIndex(0)
+---
+>>>class C {
+1->^^^^^^
+2 >      ^
+3 >       ^^->
+1->
+  >class 
+2 >      C
+1->Emitted(3, 7) Source(5, 7) + SourceIndex(0)
+2 >Emitted(3, 8) Source(5, 8) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1-> {
+  >    
+2 >    @
+3 >     dec
+1->Emitted(4, 5) Source(6, 5) + SourceIndex(0)
+2 >Emitted(4, 6) Source(6, 6) + SourceIndex(0)
+3 >Emitted(4, 9) Source(6, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(5, 5) Source(7, 5) + SourceIndex(0)
+2 >Emitted(5, 6) Source(7, 6) + SourceIndex(0)
+3 >Emitted(5, 9) Source(7, 9) + SourceIndex(0)
+---
+>>>    method() { }
+1->^^^^
+2 >    ^^^^^^
+3 >          ^^^^^
+4 >               ^
+1->
+  >    
+2 >    method
+3 >          () {
+4 >               }
+1->Emitted(6, 5) Source(8, 5) + SourceIndex(0)
+2 >Emitted(6, 11) Source(8, 11) + SourceIndex(0)
+3 >Emitted(6, 16) Source(8, 15) + SourceIndex(0)
+4 >Emitted(6, 17) Source(8, 16) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(7, 5) Source(10, 5) + SourceIndex(0)
+2 >Emitted(7, 6) Source(10, 6) + SourceIndex(0)
+3 >Emitted(7, 9) Source(10, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(8, 5) Source(11, 5) + SourceIndex(0)
+2 >Emitted(8, 6) Source(11, 6) + SourceIndex(0)
+3 >Emitted(8, 9) Source(11, 9) + SourceIndex(0)
+---
+>>>    get x() { return 1; }
+1->^^^^^^^^
+2 >        ^
+3 >         ^^^^^
+4 >              ^^^^^^^
+5 >                     ^
+6 >                      ^
+7 >                       ^
+8 >                        ^
+1->
+  >    get 
+2 >        x
+3 >         () { 
+4 >              return 
+5 >                     1
+6 >                      ;
+7 >                        
+8 >                        }
+1->Emitted(9, 9) Source(12, 9) + SourceIndex(0)
+2 >Emitted(9, 10) Source(12, 10) + SourceIndex(0)
+3 >Emitted(9, 15) Source(12, 15) + SourceIndex(0)
+4 >Emitted(9, 22) Source(12, 22) + SourceIndex(0)
+5 >Emitted(9, 23) Source(12, 23) + SourceIndex(0)
+6 >Emitted(9, 24) Source(12, 24) + SourceIndex(0)
+7 >Emitted(9, 25) Source(12, 25) + SourceIndex(0)
+8 >Emitted(9, 26) Source(12, 26) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(10, 5) Source(14, 5) + SourceIndex(0)
+2 >Emitted(10, 6) Source(14, 6) + SourceIndex(0)
+3 >Emitted(10, 9) Source(14, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(11, 5) Source(15, 5) + SourceIndex(0)
+2 >Emitted(11, 6) Source(15, 6) + SourceIndex(0)
+3 >Emitted(11, 9) Source(15, 9) + SourceIndex(0)
+---
+>>>    set x(value) { }
+1->^^^^^^^^
+2 >        ^
+3 >         ^
+4 >          ^^^^^
+5 >               ^^^^
+6 >                   ^
+1->
+  >    set 
+2 >        x
+3 >         (
+4 >          value: number
+5 >               ) { 
+6 >                   }
+1->Emitted(12, 9) Source(16, 9) + SourceIndex(0)
+2 >Emitted(12, 10) Source(16, 10) + SourceIndex(0)
+3 >Emitted(12, 11) Source(16, 11) + SourceIndex(0)
+4 >Emitted(12, 16) Source(16, 24) + SourceIndex(0)
+5 >Emitted(12, 20) Source(16, 28) + SourceIndex(0)
+6 >Emitted(12, 21) Source(16, 29) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(13, 5) Source(18, 5) + SourceIndex(0)
+2 >Emitted(13, 6) Source(18, 6) + SourceIndex(0)
+3 >Emitted(13, 9) Source(18, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(14, 5) Source(19, 5) + SourceIndex(0)
+2 >Emitted(14, 6) Source(19, 6) + SourceIndex(0)
+3 >Emitted(14, 9) Source(19, 9) + SourceIndex(0)
+---
+>>>    y = 1;
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^
+5 >         ^
+1->
+  >    
+2 >    y
+3 >      = 
+4 >        1
+5 >         ;
+1->Emitted(15, 5) Source(20, 5) + SourceIndex(0)
+2 >Emitted(15, 6) Source(20, 6) + SourceIndex(0)
+3 >Emitted(15, 9) Source(20, 9) + SourceIndex(0)
+4 >Emitted(15, 10) Source(20, 10) + SourceIndex(0)
+5 >Emitted(15, 11) Source(20, 11) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(16, 5) Source(22, 5) + SourceIndex(0)
+2 >Emitted(16, 6) Source(22, 6) + SourceIndex(0)
+3 >Emitted(16, 9) Source(22, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(17, 5) Source(23, 5) + SourceIndex(0)
+2 >Emitted(17, 6) Source(23, 6) + SourceIndex(0)
+3 >Emitted(17, 9) Source(23, 9) + SourceIndex(0)
+---
+>>>    accessor z = 1;
+1->^^^^
+2 >    ^^^^^^^^
+3 >            ^
+4 >             ^
+5 >              ^^^
+6 >                 ^
+7 >                  ^
+1->
+  >    
+2 >    accessor
+3 >             
+4 >             z
+5 >               = 
+6 >                 1
+7 >                  ;
+1->Emitted(18, 5) Source(24, 5) + SourceIndex(0)
+2 >Emitted(18, 13) Source(24, 13) + SourceIndex(0)
+3 >Emitted(18, 14) Source(24, 14) + SourceIndex(0)
+4 >Emitted(18, 15) Source(24, 15) + SourceIndex(0)
+5 >Emitted(18, 18) Source(24, 18) + SourceIndex(0)
+6 >Emitted(18, 19) Source(24, 19) + SourceIndex(0)
+7 >Emitted(18, 20) Source(24, 20) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(19, 5) Source(26, 5) + SourceIndex(0)
+2 >Emitted(19, 6) Source(26, 6) + SourceIndex(0)
+3 >Emitted(19, 9) Source(26, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(20, 5) Source(27, 5) + SourceIndex(0)
+2 >Emitted(20, 6) Source(27, 6) + SourceIndex(0)
+3 >Emitted(20, 9) Source(27, 9) + SourceIndex(0)
+---
+>>>    static #method() { }
+1->^^^^
+2 >    ^^^^^^
+3 >          ^
+4 >           ^^^^^^^
+5 >                  ^^^^^
+6 >                       ^
+1->
+  >    
+2 >    static
+3 >           
+4 >           #method
+5 >                  () {
+6 >                       }
+1->Emitted(21, 5) Source(28, 5) + SourceIndex(0)
+2 >Emitted(21, 11) Source(28, 11) + SourceIndex(0)
+3 >Emitted(21, 12) Source(28, 12) + SourceIndex(0)
+4 >Emitted(21, 19) Source(28, 19) + SourceIndex(0)
+5 >Emitted(21, 24) Source(28, 23) + SourceIndex(0)
+6 >Emitted(21, 25) Source(28, 24) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(22, 5) Source(30, 5) + SourceIndex(0)
+2 >Emitted(22, 6) Source(30, 6) + SourceIndex(0)
+3 >Emitted(22, 9) Source(30, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(23, 5) Source(31, 5) + SourceIndex(0)
+2 >Emitted(23, 6) Source(31, 6) + SourceIndex(0)
+3 >Emitted(23, 9) Source(31, 9) + SourceIndex(0)
+---
+>>>    static get #x() { return 1; }
+1->^^^^
+2 >    ^^^^^^
+3 >          ^^^^^
+4 >               ^^
+5 >                 ^^^^^
+6 >                      ^^^^^^^
+7 >                             ^
+8 >                              ^
+9 >                               ^
+10>                                ^
+1->
+  >    
+2 >    static
+3 >           get 
+4 >               #x
+5 >                 () { 
+6 >                      return 
+7 >                             1
+8 >                              ;
+9 >                                
+10>                                }
+1->Emitted(24, 5) Source(32, 5) + SourceIndex(0)
+2 >Emitted(24, 11) Source(32, 11) + SourceIndex(0)
+3 >Emitted(24, 16) Source(32, 16) + SourceIndex(0)
+4 >Emitted(24, 18) Source(32, 18) + SourceIndex(0)
+5 >Emitted(24, 23) Source(32, 23) + SourceIndex(0)
+6 >Emitted(24, 30) Source(32, 30) + SourceIndex(0)
+7 >Emitted(24, 31) Source(32, 31) + SourceIndex(0)
+8 >Emitted(24, 32) Source(32, 32) + SourceIndex(0)
+9 >Emitted(24, 33) Source(32, 33) + SourceIndex(0)
+10>Emitted(24, 34) Source(32, 34) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(25, 5) Source(34, 5) + SourceIndex(0)
+2 >Emitted(25, 6) Source(34, 6) + SourceIndex(0)
+3 >Emitted(25, 9) Source(34, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(26, 5) Source(35, 5) + SourceIndex(0)
+2 >Emitted(26, 6) Source(35, 6) + SourceIndex(0)
+3 >Emitted(26, 9) Source(35, 9) + SourceIndex(0)
+---
+>>>    static set #x(value) { }
+1->^^^^
+2 >    ^^^^^^
+3 >          ^^^^^
+4 >               ^^
+5 >                 ^
+6 >                  ^^^^^
+7 >                       ^^^^
+8 >                           ^
+1->
+  >    
+2 >    static
+3 >           set 
+4 >               #x
+5 >                 (
+6 >                  value: number
+7 >                       ) { 
+8 >                           }
+1->Emitted(27, 5) Source(36, 5) + SourceIndex(0)
+2 >Emitted(27, 11) Source(36, 11) + SourceIndex(0)
+3 >Emitted(27, 16) Source(36, 16) + SourceIndex(0)
+4 >Emitted(27, 18) Source(36, 18) + SourceIndex(0)
+5 >Emitted(27, 19) Source(36, 19) + SourceIndex(0)
+6 >Emitted(27, 24) Source(36, 32) + SourceIndex(0)
+7 >Emitted(27, 28) Source(36, 36) + SourceIndex(0)
+8 >Emitted(27, 29) Source(36, 37) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(28, 5) Source(38, 5) + SourceIndex(0)
+2 >Emitted(28, 6) Source(38, 6) + SourceIndex(0)
+3 >Emitted(28, 9) Source(38, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(29, 5) Source(39, 5) + SourceIndex(0)
+2 >Emitted(29, 6) Source(39, 6) + SourceIndex(0)
+3 >Emitted(29, 9) Source(39, 9) + SourceIndex(0)
+---
+>>>    static #y = 1;
+1->^^^^
+2 >    ^^^^^^
+3 >          ^
+4 >           ^^
+5 >             ^^^
+6 >                ^
+7 >                 ^
+1->
+  >    
+2 >    static
+3 >           
+4 >           #y
+5 >              = 
+6 >                1
+7 >                 ;
+1->Emitted(30, 5) Source(40, 5) + SourceIndex(0)
+2 >Emitted(30, 11) Source(40, 11) + SourceIndex(0)
+3 >Emitted(30, 12) Source(40, 12) + SourceIndex(0)
+4 >Emitted(30, 14) Source(40, 14) + SourceIndex(0)
+5 >Emitted(30, 17) Source(40, 17) + SourceIndex(0)
+6 >Emitted(30, 18) Source(40, 18) + SourceIndex(0)
+7 >Emitted(30, 19) Source(40, 19) + SourceIndex(0)
+---
+>>>    @dec
+1 >^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^->
+1 >
+  >
+  >    
+2 >    @
+3 >     dec
+1 >Emitted(31, 5) Source(42, 5) + SourceIndex(0)
+2 >Emitted(31, 6) Source(42, 6) + SourceIndex(0)
+3 >Emitted(31, 9) Source(42, 9) + SourceIndex(0)
+---
+>>>    @dec
+1->^^^^
+2 >    ^
+3 >     ^^^
+4 >        ^^^^^^^^^^^^^^^^^^^^->
+1->
+  >    
+2 >    @
+3 >     dec
+1->Emitted(32, 5) Source(43, 5) + SourceIndex(0)
+2 >Emitted(32, 6) Source(43, 6) + SourceIndex(0)
+3 >Emitted(32, 9) Source(43, 9) + SourceIndex(0)
+---
+>>>    static accessor #z = 1;
+1->^^^^
+2 >    ^^^^^^
+3 >          ^
+4 >           ^^^^^^^^
+5 >                   ^
+6 >                    ^^
+7 >                      ^^^
+8 >                         ^
+9 >                          ^
+1->
+  >    
+2 >    static
+3 >           
+4 >           accessor
+5 >                    
+6 >                    #z
+7 >                       = 
+8 >                         1
+9 >                          ;
+1->Emitted(33, 5) Source(44, 5) + SourceIndex(0)
+2 >Emitted(33, 11) Source(44, 11) + SourceIndex(0)
+3 >Emitted(33, 12) Source(44, 12) + SourceIndex(0)
+4 >Emitted(33, 20) Source(44, 20) + SourceIndex(0)
+5 >Emitted(33, 21) Source(44, 21) + SourceIndex(0)
+6 >Emitted(33, 23) Source(44, 23) + SourceIndex(0)
+7 >Emitted(33, 26) Source(44, 26) + SourceIndex(0)
+8 >Emitted(33, 27) Source(44, 27) + SourceIndex(0)
+9 >Emitted(33, 28) Source(44, 28) + SourceIndex(0)
+---
+>>>}
+>>>//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.js.map===================================================================
+JsFile: esDecorators-classDeclaration-sourceMap.d.ts
+mapUrl: esDecorators-classDeclaration-sourceMap.d.ts.map
+sourceRoot: 
+sources: esDecorators-classDeclaration-sourceMap.ts
+===================================================================
+-------------------------------------------------------------------
+emittedFile:tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.d.ts
+sourceFile:esDecorators-classDeclaration-sourceMap.ts
+-------------------------------------------------------------------
+>>>declare var dec: any;
+1 >
+2 >^^^^^^^
+3 >       ^
+4 >        ^^^^
+5 >            ^^^
+6 >               ^^
+7 >                 ^^^
+8 >                    ^
+1 >
+2 >declare
+3 >        
+4 >        var 
+5 >            dec
+6 >               : 
+7 >                 any
+8 >                    ;
+1 >Emitted(1, 1) Source(1, 1) + SourceIndex(0)
+2 >Emitted(1, 8) Source(1, 8) + SourceIndex(0)
+3 >Emitted(1, 9) Source(1, 9) + SourceIndex(0)
+4 >Emitted(1, 13) Source(1, 13) + SourceIndex(0)
+5 >Emitted(1, 16) Source(1, 16) + SourceIndex(0)
+6 >Emitted(1, 18) Source(1, 18) + SourceIndex(0)
+7 >Emitted(1, 21) Source(1, 21) + SourceIndex(0)
+8 >Emitted(1, 22) Source(1, 22) + SourceIndex(0)
+---
+>>>declare class C {
+1 >
+2 >^^^^^^^^^^^^^^
+3 >              ^
+1 >
+  >
+  >
+2 >@dec
+  >@dec
+  >class 
+3 >              C
+1 >Emitted(2, 1) Source(3, 1) + SourceIndex(0)
+2 >Emitted(2, 15) Source(5, 7) + SourceIndex(0)
+3 >Emitted(2, 16) Source(5, 8) + SourceIndex(0)
+---
+>>>    #private;
+>>>    method(): void;
+1 >^^^^
+2 >    ^^^^^^
+3 >          ^^^^^^^^^^^->
+1 > {
+  >    @dec
+  >    @dec
+  >    
+2 >    method
+1 >Emitted(4, 5) Source(8, 5) + SourceIndex(0)
+2 >Emitted(4, 11) Source(8, 11) + SourceIndex(0)
+---
+>>>    get x(): number;
+1->^^^^
+2 >    ^^^^
+3 >        ^
+4 >         ^^^^
+5 >             ^^^^^^
+6 >                   ^
+7 >                    ^^^^^^->
+1->() {}
+  >
+  >    
+2 >    @dec
+  >        @dec
+  >        get 
+3 >        x
+4 >         () { return 1; }
+  >         
+  >             @dec
+  >             @dec
+  >             set x(value: 
+5 >             number
+6 >                   
+1->Emitted(5, 5) Source(10, 5) + SourceIndex(0)
+2 >Emitted(5, 9) Source(12, 9) + SourceIndex(0)
+3 >Emitted(5, 10) Source(12, 10) + SourceIndex(0)
+4 >Emitted(5, 14) Source(16, 18) + SourceIndex(0)
+5 >Emitted(5, 20) Source(16, 24) + SourceIndex(0)
+6 >Emitted(5, 21) Source(12, 26) + SourceIndex(0)
+---
+>>>    set x(value: number);
+1->^^^^
+2 >    ^^^^
+3 >        ^
+4 >         ^
+5 >          ^^^^^
+6 >               ^^
+7 >                 ^^^^^^
+8 >                       ^^
+1->
+  >
+  >    
+2 >    @dec
+  >        @dec
+  >        set 
+3 >        x
+4 >         (
+5 >          value
+6 >               : 
+7 >                 number
+8 >                       ) { }
+1->Emitted(6, 5) Source(14, 5) + SourceIndex(0)
+2 >Emitted(6, 9) Source(16, 9) + SourceIndex(0)
+3 >Emitted(6, 10) Source(16, 10) + SourceIndex(0)
+4 >Emitted(6, 11) Source(16, 11) + SourceIndex(0)
+5 >Emitted(6, 16) Source(16, 16) + SourceIndex(0)
+6 >Emitted(6, 18) Source(16, 18) + SourceIndex(0)
+7 >Emitted(6, 24) Source(16, 24) + SourceIndex(0)
+8 >Emitted(6, 26) Source(16, 29) + SourceIndex(0)
+---
+>>>    y: number;
+1 >^^^^
+2 >    ^
+3 >     ^^^^^^^^^
+4 >              ^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >    y
+3 >      = 1;
+1 >Emitted(7, 5) Source(20, 5) + SourceIndex(0)
+2 >Emitted(7, 6) Source(20, 6) + SourceIndex(0)
+3 >Emitted(7, 15) Source(20, 11) + SourceIndex(0)
+---
+>>>    accessor z: number;
+1->^^^^
+2 >    ^^^^^^^^
+3 >            ^
+4 >             ^
+5 >              ^^^^^^^^^
+1->
+  >
+  >    @dec
+  >    @dec
+  >    
+2 >    accessor
+3 >             
+4 >             z
+5 >               = 1;
+1->Emitted(8, 5) Source(24, 5) + SourceIndex(0)
+2 >Emitted(8, 13) Source(24, 13) + SourceIndex(0)
+3 >Emitted(8, 14) Source(24, 14) + SourceIndex(0)
+4 >Emitted(8, 15) Source(24, 15) + SourceIndex(0)
+5 >Emitted(8, 24) Source(24, 20) + SourceIndex(0)
+---
+>>>}
+1 >^
+2 > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
+1 >
+  >
+  >    @dec
+  >    @dec
+  >    static #method() {}
+  >
+  >    @dec
+  >    @dec
+  >    static get #x() { return 1; }
+  >
+  >    @dec
+  >    @dec
+  >    static set #x(value: number) { }
+  >
+  >    @dec
+  >    @dec
+  >    static #y = 1;
+  >
+  >    @dec
+  >    @dec
+  >    static accessor #z = 1;
+  >}
+1 >Emitted(9, 2) Source(45, 2) + SourceIndex(0)
+---
+>>>//# sourceMappingURL=esDecorators-classDeclaration-sourceMap.d.ts.map
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).symbols b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).symbols
new file mode 100644
index 0000000000000..fdb35b4809deb
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).symbols
@@ -0,0 +1,106 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts ===
+declare var dec: any;
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+@dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+@dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+class C {
+>C : Symbol(C, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 21))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    method() {}
+>method : Symbol(C.method, Decl(esDecorators-classDeclaration-sourceMap.ts, 4, 9))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    get x() { return 1; }
+>x : Symbol(C.x, Decl(esDecorators-classDeclaration-sourceMap.ts, 7, 15), Decl(esDecorators-classDeclaration-sourceMap.ts, 11, 25))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    set x(value: number) { }
+>x : Symbol(C.x, Decl(esDecorators-classDeclaration-sourceMap.ts, 7, 15), Decl(esDecorators-classDeclaration-sourceMap.ts, 11, 25))
+>value : Symbol(value, Decl(esDecorators-classDeclaration-sourceMap.ts, 15, 10))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    y = 1;
+>y : Symbol(C.y, Decl(esDecorators-classDeclaration-sourceMap.ts, 15, 28))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    accessor z = 1;
+>z : Symbol(C.z, Decl(esDecorators-classDeclaration-sourceMap.ts, 19, 10))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static #method() {}
+>#method : Symbol(C.#method, Decl(esDecorators-classDeclaration-sourceMap.ts, 23, 19))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static get #x() { return 1; }
+>#x : Symbol(C.#x, Decl(esDecorators-classDeclaration-sourceMap.ts, 27, 23), Decl(esDecorators-classDeclaration-sourceMap.ts, 31, 33))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static set #x(value: number) { }
+>#x : Symbol(C.#x, Decl(esDecorators-classDeclaration-sourceMap.ts, 27, 23), Decl(esDecorators-classDeclaration-sourceMap.ts, 31, 33))
+>value : Symbol(value, Decl(esDecorators-classDeclaration-sourceMap.ts, 35, 18))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static #y = 1;
+>#y : Symbol(C.#y, Decl(esDecorators-classDeclaration-sourceMap.ts, 35, 36))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    @dec
+>dec : Symbol(dec, Decl(esDecorators-classDeclaration-sourceMap.ts, 0, 11))
+
+    static accessor #z = 1;
+>#z : Symbol(C.#z, Decl(esDecorators-classDeclaration-sourceMap.ts, 39, 18))
+}
+
diff --git a/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).types b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).types
new file mode 100644
index 0000000000000..0953c47c87f0d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classDeclaration-sourceMap(target=esnext).types
@@ -0,0 +1,112 @@
+=== tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts ===
+declare var dec: any;
+>dec : any
+
+@dec
+>dec : any
+
+@dec
+>dec : any
+
+class C {
+>C : C
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    method() {}
+>method : () => void
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    get x() { return 1; }
+>x : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    set x(value: number) { }
+>x : number
+>value : number
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    y = 1;
+>y : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    accessor z = 1;
+>z : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static #method() {}
+>#method : () => void
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static get #x() { return 1; }
+>#x : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static set #x(value: number) { }
+>#x : number
+>value : number
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static #y = 1;
+>#y : number
+>1 : 1
+
+    @dec
+>dec : any
+
+    @dec
+>dec : any
+
+    static accessor #z = 1;
+>#z : number
+>1 : 1
+}
+
diff --git a/tests/baselines/reference/esDecorators-classExpression-classSuper.1.js b/tests/baselines/reference/esDecorators-classExpression-classSuper.1.js
new file mode 100644
index 0000000000000..55a3de265b4e2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-classSuper.1.js
@@ -0,0 +1,49 @@
+//// [esDecorators-classExpression-classSuper.1.ts]
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): void;
+}
+
+const method = "method";
+
+(@dec
+class C extends Base {
+    static {
+        super.method();
+        super["method"]();
+        super[method]();
+
+        super.method``;
+        super["method"]``;
+        super[method]``;
+    }
+});
+
+//// [esDecorators-classExpression-classSuper.1.js]
+const method = "method";
+((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+        }
+        static {
+            Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+            Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+            Reflect.get(_classSuper, method, _classThis).call(_classThis);
+            Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+            Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+            Reflect.get(_classSuper, method, _classThis).bind(_classThis) ``;
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-classSuper.2.js b/tests/baselines/reference/esDecorators-classExpression-classSuper.2.js
new file mode 100644
index 0000000000000..8ffd58e86ffc8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-classSuper.2.js
@@ -0,0 +1,93 @@
+//// [esDecorators-classExpression-classSuper.2.ts]
+declare var dec: any;
+
+// class expression in extends should not get an assigned name
+(@dec
+class C1 extends class { } {
+    static {
+        super.name;
+    }
+});
+
+// function expression in extends should not get an assigned name
+(@dec
+class C2 extends (function() {} as any) {
+    static {
+        super.name;
+    }
+});
+
+// arrow function in extends should not get an assigned name
+(@dec
+class C3 extends ((() => {}) as any) {
+    static {
+        super.name;
+    }
+});
+
+
+//// [esDecorators-classExpression-classSuper.2.js]
+// class expression in extends should not get an assigned name
+((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = (0, class {
+    });
+    var C1 = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C1 = _classThis = _classDescriptor.value;
+        }
+        static {
+            Reflect.get(_classSuper, "name", _classThis);
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C1 = _classThis;
+})());
+// function expression in extends should not get an assigned name
+((() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _classSuper_1 = (0, function () { });
+    var C2 = class extends _classSuper_1 {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            C2 = _classThis_1 = _classDescriptor_1.value;
+        }
+        static {
+            Reflect.get(_classSuper_1, "name", _classThis_1);
+        }
+        static {
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return C2 = _classThis_1;
+})());
+// arrow function in extends should not get an assigned name
+((() => {
+    let _classDecorators_2 = [dec];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    let _classSuper_2 = (0, (() => { }));
+    var C3 = class extends _classSuper_2 {
+        static {
+            __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+            C3 = _classThis_2 = _classDescriptor_2.value;
+        }
+        static {
+            Reflect.get(_classSuper_2, "name", _classThis_2);
+        }
+        static {
+            __runInitializers(_classThis_2, _classExtraInitializers_2);
+        }
+    };
+    return C3 = _classThis_2;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-classSuper.3.js b/tests/baselines/reference/esDecorators-classExpression-classSuper.3.js
new file mode 100644
index 0000000000000..ac9ea3a19cbbb
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-classSuper.3.js
@@ -0,0 +1,94 @@
+//// [esDecorators-classExpression-classSuper.3.ts]
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+(@dec
+class C extends Base {
+    static {
+        super.x;
+        super.x = 1;
+        super.x += 1;
+        super.x++;
+        super.x--;
+        ++super.x;
+        --super.x;
+        ({ x: super.x } = { x: 1 });
+        [super.x] = [1];
+
+        super["x"];
+        super["x"] = 1;
+        super["x"] += 1;
+        super["x"]++;
+        super["x"]--;
+        ++super["x"];
+        --super["x"];
+        ({ x: super["x"] } = { x: 1 });
+        [super["x"]] = [1];
+
+        super[x];
+        super[x] = 1;
+        super[x] += 1;
+        super[x]++;
+        super[x]--;
+        ++super[x];
+        --super[x];
+        ({ x: super[x] } = { x: 1 });
+        [super[x]] = [1];
+    }
+});
+
+
+//// [esDecorators-classExpression-classSuper.3.js]
+const x = "x";
+((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+        }
+        static {
+            var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m, _o, _p, _q, _r, _s;
+            Reflect.get(_classSuper, "x", _classThis);
+            Reflect.set(_classSuper, "x", 1, _classThis);
+            Reflect.set(_classSuper, "x", Reflect.get(_classSuper, "x", _classThis) + 1, _classThis);
+            Reflect.set(_classSuper, "x", (_a = Reflect.get(_classSuper, "x", _classThis), _a++, _a), _classThis);
+            Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _b--, _b), _classThis);
+            Reflect.set(_classSuper, "x", (_c = Reflect.get(_classSuper, "x", _classThis), ++_c), _classThis);
+            Reflect.set(_classSuper, "x", (_d = Reflect.get(_classSuper, "x", _classThis), --_d), _classThis);
+            ({ x: ({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value } = { x: 1 });
+            [({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value] = [1];
+            Reflect.get(_classSuper, "x", _classThis);
+            Reflect.set(_classSuper, "x", 1, _classThis);
+            Reflect.set(_classSuper, "x", Reflect.get(_classSuper, "x", _classThis) + 1, _classThis);
+            Reflect.set(_classSuper, "x", (_e = Reflect.get(_classSuper, "x", _classThis), _e++, _e), _classThis);
+            Reflect.set(_classSuper, "x", (_f = Reflect.get(_classSuper, "x", _classThis), _f--, _f), _classThis);
+            Reflect.set(_classSuper, "x", (_g = Reflect.get(_classSuper, "x", _classThis), ++_g), _classThis);
+            Reflect.set(_classSuper, "x", (_h = Reflect.get(_classSuper, "x", _classThis), --_h), _classThis);
+            ({ x: ({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value } = { x: 1 });
+            [({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value] = [1];
+            Reflect.get(_classSuper, x, _classThis);
+            Reflect.set(_classSuper, x, 1, _classThis);
+            Reflect.set(_classSuper, _j = x, Reflect.get(_classSuper, _j, _classThis) + 1, _classThis);
+            Reflect.set(_classSuper, _k = x, (_l = Reflect.get(_classSuper, _k, _classThis), _l++, _l), _classThis);
+            Reflect.set(_classSuper, _m = x, (_o = Reflect.get(_classSuper, _m, _classThis), _o--, _o), _classThis);
+            Reflect.set(_classSuper, _p = x, (_q = Reflect.get(_classSuper, _p, _classThis), ++_q), _classThis);
+            Reflect.set(_classSuper, _r = x, (_s = Reflect.get(_classSuper, _r, _classThis), --_s), _classThis);
+            ({ x: ({ set value(_a) { Reflect.set(_classSuper, x, _a, _classThis); } }).value } = { x: 1 });
+            [({ set value(_a) { Reflect.set(_classSuper, x, _a, _classThis); } }).value] = [1];
+        }
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-classSuper.4.js b/tests/baselines/reference/esDecorators-classExpression-classSuper.4.js
new file mode 100644
index 0000000000000..2b901f0137f24
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-classSuper.4.js
@@ -0,0 +1,45 @@
+//// [esDecorators-classExpression-classSuper.4.ts]
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+}
+
+const method = "method";
+
+(@dec
+class C extends Base {
+    static a = super.method();
+    static b = super["method"]();
+    static c = super[method]();
+    static d = super.method``;
+    static e = super["method"]``;
+    static f = super[method]``;
+});
+
+
+//// [esDecorators-classExpression-classSuper.4.js]
+const method = "method";
+((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+        }
+        static a = Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+        static b = Reflect.get(_classSuper, "method", _classThis).call(_classThis);
+        static c = Reflect.get(_classSuper, method, _classThis).call(_classThis);
+        static d = Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+        static e = Reflect.get(_classSuper, "method", _classThis).bind(_classThis) ``;
+        static f = Reflect.get(_classSuper, method, _classThis).bind(_classThis) ``;
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-classSuper.5.js b/tests/baselines/reference/esDecorators-classExpression-classSuper.5.js
new file mode 100644
index 0000000000000..41327501b796a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-classSuper.5.js
@@ -0,0 +1,183 @@
+//// [esDecorators-classExpression-classSuper.5.ts]
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+(@dec
+class C1 extends Base {
+    static a = super.x;
+    static b = super.x = 1;
+    static c = super.x += 1;
+    static d = super.x++;
+    static e = super.x--;
+    static f = ++super.x;
+    static g = --super.x;
+    static h = ({ x: super.x } = { x: 1 });
+    static i = [super.x] = [1];
+});
+
+(@dec
+class C2 extends Base {
+    static a = super["x"];
+    static b = super["x"] = 1;
+    static c = super["x"] += 1;
+    static d = super["x"]++;
+    static e = super["x"]--;
+    static f = ++super["x"];
+    static g = --super["x"];
+    static h = ({ x: super["x"] } = { x: 1 });
+    static i = [super["x"]] = [1];
+});
+
+(@dec
+class C3 extends Base {
+    static a = super[x];
+    static b = super[x] = 1;
+    static c = super[x] += 1;
+    static d = super[x]++;
+    static e = super[x]--;
+    static f = ++super[x];
+    static g = --super[x];
+    static h = ({ x: super[x] } = { x: 1 });
+    static i = [super[x]] = [1];
+});
+
+
+//// [esDecorators-classExpression-classSuper.5.js]
+const x = "x";
+((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _classSuper = Base;
+    var C1 = class extends _classSuper {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C1 = _classThis = _classDescriptor.value;
+        }
+        static a = Reflect.get(_classSuper, "x", _classThis);
+        static b = (() => {
+            var _a;
+            return Reflect.set(_classSuper, "x", _a = 1, _classThis), _a;
+        })();
+        static c = (() => {
+            var _a;
+            return Reflect.set(_classSuper, "x", _a = Reflect.get(_classSuper, "x", _classThis) + 1, _classThis), _a;
+        })();
+        static d = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = _b++, _b), _classThis), _a;
+        })();
+        static e = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = _b--, _b), _classThis), _a;
+        })();
+        static f = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = ++_b), _classThis), _a;
+        })();
+        static g = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper, "x", (_b = Reflect.get(_classSuper, "x", _classThis), _a = --_b), _classThis), _a;
+        })();
+        static h = ({ x: ({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value } = { x: 1 });
+        static i = [({ set value(_a) { Reflect.set(_classSuper, "x", _a, _classThis); } }).value] = [1];
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C1 = _classThis;
+})());
+((() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _classSuper_1 = Base;
+    var C2 = class extends _classSuper_1 {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            C2 = _classThis_1 = _classDescriptor_1.value;
+        }
+        static a = Reflect.get(_classSuper_1, "x", _classThis_1);
+        static b = (() => {
+            var _a;
+            return Reflect.set(_classSuper_1, "x", _a = 1, _classThis_1), _a;
+        })();
+        static c = (() => {
+            var _a;
+            return Reflect.set(_classSuper_1, "x", _a = Reflect.get(_classSuper_1, "x", _classThis_1) + 1, _classThis_1), _a;
+        })();
+        static d = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = _b++, _b), _classThis_1), _a;
+        })();
+        static e = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = _b--, _b), _classThis_1), _a;
+        })();
+        static f = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = ++_b), _classThis_1), _a;
+        })();
+        static g = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_1, "x", (_b = Reflect.get(_classSuper_1, "x", _classThis_1), _a = --_b), _classThis_1), _a;
+        })();
+        static h = ({ x: ({ set value(_a) { Reflect.set(_classSuper_1, "x", _a, _classThis_1); } }).value } = { x: 1 });
+        static i = [({ set value(_a) { Reflect.set(_classSuper_1, "x", _a, _classThis_1); } }).value] = [1];
+        static {
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return C2 = _classThis_1;
+})());
+((() => {
+    let _classDecorators_2 = [dec];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    let _classSuper_2 = Base;
+    var C3 = class extends _classSuper_2 {
+        static {
+            __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+            C3 = _classThis_2 = _classDescriptor_2.value;
+        }
+        static a = Reflect.get(_classSuper_2, x, _classThis_2);
+        static b = (() => {
+            var _a;
+            return Reflect.set(_classSuper_2, x, _a = 1, _classThis_2), _a;
+        })();
+        static c = (() => {
+            var _a, _b;
+            return Reflect.set(_classSuper_2, _a = x, _b = Reflect.get(_classSuper_2, _a, _classThis_2) + 1, _classThis_2), _b;
+        })();
+        static d = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = _c++, _c), _classThis_2), _b;
+        })();
+        static e = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = _c--, _c), _classThis_2), _b;
+        })();
+        static f = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = ++_c), _classThis_2), _b;
+        })();
+        static g = (() => {
+            var _a, _b, _c;
+            return Reflect.set(_classSuper_2, _a = x, (_c = Reflect.get(_classSuper_2, _a, _classThis_2), _b = --_c), _classThis_2), _b;
+        })();
+        static h = ({ x: ({ set value(_a) { Reflect.set(_classSuper_2, x, _a, _classThis_2); } }).value } = { x: 1 });
+        static i = [({ set value(_a) { Reflect.set(_classSuper_2, x, _a, _classThis_2); } }).value] = [1];
+        static {
+            __runInitializers(_classThis_2, _classExtraInitializers_2);
+        }
+    };
+    return C3 = _classThis_2;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-classSuper.6.js b/tests/baselines/reference/esDecorators-classExpression-classSuper.6.js
new file mode 100644
index 0000000000000..d40daa28ff70e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-classSuper.6.js
@@ -0,0 +1,54 @@
+//// [esDecorators-classExpression-classSuper.6.ts]
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+    method(...args: any[]): number;
+}
+
+// none of the following should result in caching `super`
+(@dec
+class C extends Base {
+    static m() { super.method(); }
+    static get x() { return super.method(); }
+    static set x(v: number) { super.method(); }
+
+    constructor() {
+        super();
+        super.method();
+    }
+
+    a = super.method();
+    m() { super.method(); }
+    get x() { return super.method(); }
+    set x(v: number) { super.method(); }
+});
+
+
+//// [esDecorators-classExpression-classSuper.6.js]
+// none of the following should result in caching `super`
+((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class extends Base {
+        static {
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+        static m() { super.method(); }
+        static get x() { return super.method(); }
+        static set x(v) { super.method(); }
+        constructor() {
+            super();
+            super.method();
+        }
+        a = super.method();
+        m() { super.method(); }
+        get x() { return super.method(); }
+        set x(v) { super.method(); }
+    };
+    return C = _classThis;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=es2015).js b/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=es2015).js
new file mode 100644
index 0000000000000..333da95619b15
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=es2015).js
@@ -0,0 +1,169 @@
+//// [esDecorators-classExpression-commentPreservation.ts]
+declare var dec: any;
+
+/*1*/
+(
+/*2*/
+@dec
+/*3*/
+@dec
+/*4*/
+class C {
+    /*5*/
+    @dec
+    /*6*/
+    @dec
+    /*7*/
+    method() {}
+
+    /*8*/
+    @dec
+    /*9*/
+    @dec
+    /*10*/
+    get x() { return 1; }
+
+    /*11*/
+    @dec
+    /*12*/
+    @dec
+    /*13*/
+    set x(value: number) { }
+
+    /*14*/
+    @dec
+    /*15*/
+    @dec
+    /*16*/
+    y = 1;
+
+    /*17*/
+    @dec
+    /*18*/
+    @dec
+    /*19*/
+    accessor z = 1;
+
+    /*20*/
+    @dec
+    /*21*/
+    @dec
+    /*22*/
+    static #method() {}
+
+    /*23*/
+    @dec
+    /*24*/
+    @dec
+    /*25*/
+    static get #x() { return 1; }
+
+    /*26*/
+    @dec
+    /*27*/
+    @dec
+    /*28*/
+    static set #x(value: number) { }
+
+    /*29*/
+    @dec
+    /*30*/
+    @dec
+    /*31*/
+    static #y = 1;
+
+    /*32*/
+    @dec
+    /*33*/
+    @dec
+    /*34*/
+    static accessor #z = 1;
+}
+);
+
+
+//// [esDecorators-classExpression-commentPreservation.js]
+/*1*/
+((() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set, _z_1_accessor_storage;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = (_classThis = class {
+            constructor() {
+                /*14*/
+                this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+                _z_1_accessor_storage.set(this, __runInitializers(this, _z_initializers, 1));
+            }
+            /*5*/
+            method() { }
+            /*8*/
+            get x() { return 1; }
+            /*11*/
+            set x(value) { }
+            /*17*/
+            get z() { return __classPrivateFieldGet(this, _z_1_accessor_storage, "f"); }
+            set z(value) { __classPrivateFieldSet(this, _z_1_accessor_storage, value, "f"); }
+        },
+        _z_1_accessor_storage = new WeakMap(),
+        _method_get = function _method_get() { return _static_private_method_descriptor.value; },
+        _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); },
+        _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); },
+        _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); },
+        _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); },
+        __setFunctionName(_classThis, "C"),
+        (() => {
+            _method_decorators = [dec, dec];
+            _get_x_decorators = [dec, dec];
+            _set_x_decorators = [dec, dec];
+            _y_decorators = [dec, dec];
+            _z_decorators = [dec, dec];
+            _static_private_method_decorators = [dec, dec];
+            _static_private_get_x_decorators = [dec, dec];
+            _static_private_set_x_decorators = [dec, dec];
+            _static_private_y_decorators = [dec, dec];
+            _static_private_z_decorators = [dec, dec];
+            __esDecorate(_classThis, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(_classThis, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(_classThis, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+            __esDecorate(_classThis, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(_classThis, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(_classThis, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+            __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_classThis, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(_classThis, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+            __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _staticExtraInitializers);
+        })(),
+        /*29*/
+        _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) },
+        _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) },
+        (() => {
+            __runInitializers(_classThis, _classExtraInitializers);
+        })(),
+        _classThis);
+    return C = _classThis;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=es2022).js b/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=es2022).js
new file mode 100644
index 0000000000000..18f1285498e2a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=es2022).js
@@ -0,0 +1,169 @@
+//// [esDecorators-classExpression-commentPreservation.ts]
+declare var dec: any;
+
+/*1*/
+(
+/*2*/
+@dec
+/*3*/
+@dec
+/*4*/
+class C {
+    /*5*/
+    @dec
+    /*6*/
+    @dec
+    /*7*/
+    method() {}
+
+    /*8*/
+    @dec
+    /*9*/
+    @dec
+    /*10*/
+    get x() { return 1; }
+
+    /*11*/
+    @dec
+    /*12*/
+    @dec
+    /*13*/
+    set x(value: number) { }
+
+    /*14*/
+    @dec
+    /*15*/
+    @dec
+    /*16*/
+    y = 1;
+
+    /*17*/
+    @dec
+    /*18*/
+    @dec
+    /*19*/
+    accessor z = 1;
+
+    /*20*/
+    @dec
+    /*21*/
+    @dec
+    /*22*/
+    static #method() {}
+
+    /*23*/
+    @dec
+    /*24*/
+    @dec
+    /*25*/
+    static get #x() { return 1; }
+
+    /*26*/
+    @dec
+    /*27*/
+    @dec
+    /*28*/
+    static set #x(value: number) { }
+
+    /*29*/
+    @dec
+    /*30*/
+    @dec
+    /*31*/
+    static #y = 1;
+
+    /*32*/
+    @dec
+    /*33*/
+    @dec
+    /*34*/
+    static accessor #z = 1;
+}
+);
+
+
+//// [esDecorators-classExpression-commentPreservation.js]
+/*1*/
+((() => {
+    var _method_get, _x_get, _x_set, _y, _z_accessor_storage, _z_get, _z_set, _a;
+    let _classDecorators = [dec, dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_private_method_decorators;
+    let _static_private_method_descriptor;
+    let _static_private_get_x_decorators;
+    let _static_private_get_x_descriptor;
+    let _static_private_set_x_decorators;
+    let _static_private_set_x_descriptor;
+    let _static_private_y_decorators;
+    let _static_private_y_initializers = [];
+    let _static_private_z_decorators;
+    let _static_private_z_initializers = [];
+    let _static_private_z_descriptor;
+    let _method_decorators;
+    let _get_x_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    let _z_decorators;
+    let _z_initializers = [];
+    var C = (_a = class {
+            static { _method_get = function _method_get() { return _static_private_method_descriptor.value; }, _x_get = function _x_get() { return _static_private_get_x_descriptor.get.call(this); }, _x_set = function _x_set(value) { return _static_private_set_x_descriptor.set.call(this, value); }, _z_get = function _z_get() { return _static_private_z_descriptor.get.call(this); }, _z_set = function _z_set(value) { return _static_private_z_descriptor.set.call(this, value); }; }
+            static {
+                _method_decorators = [dec, dec];
+                _get_x_decorators = [dec, dec];
+                _set_x_decorators = [dec, dec];
+                _y_decorators = [dec, dec];
+                _z_decorators = [dec, dec];
+                _static_private_method_decorators = [dec, dec];
+                _static_private_get_x_decorators = [dec, dec];
+                _static_private_set_x_decorators = [dec, dec];
+                _static_private_y_decorators = [dec, dec];
+                _static_private_z_decorators = [dec, dec];
+                __esDecorate(this, _static_private_method_descriptor = { value: __setFunctionName(function () { }, "#method") }, _static_private_method_decorators, { kind: "method", name: "#method", static: true, private: true }, null, _staticExtraInitializers);
+                __esDecorate(this, _static_private_get_x_descriptor = { get: __setFunctionName(function () { return 1; }, "#x", "get") }, _static_private_get_x_decorators, { kind: "getter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+                __esDecorate(this, _static_private_set_x_descriptor = { set: __setFunctionName(function (value) { }, "#x", "set") }, _static_private_set_x_decorators, { kind: "setter", name: "#x", static: true, private: true }, null, _staticExtraInitializers);
+                __esDecorate(this, _static_private_z_descriptor = { get: __setFunctionName(function () { return __classPrivateFieldGet(this, _classThis, "f", _z_accessor_storage); }, "#z", "get"), set: __setFunctionName(function (value) { __classPrivateFieldSet(this, _classThis, value, "f", _z_accessor_storage); }, "#z", "set") }, _static_private_z_decorators, { kind: "accessor", name: "#z", static: true, private: true }, _static_private_z_initializers, _staticExtraInitializers);
+                __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+                __esDecorate(this, null, _get_x_decorators, { kind: "getter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+                __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+                __esDecorate(this, null, _z_decorators, { kind: "accessor", name: "z", static: false, private: false }, _z_initializers, _instanceExtraInitializers);
+                __esDecorate(null, null, _static_private_y_decorators, { kind: "field", name: "#y", static: true, private: true }, _static_private_y_initializers, _staticExtraInitializers);
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+                __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                C = _classThis = _classDescriptor.value;
+                __runInitializers(_classThis, _staticExtraInitializers);
+            }
+            /*5*/
+            method() { }
+            /*8*/
+            get x() { return 1; }
+            /*11*/
+            set x(value) { }
+            /*14*/
+            y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, 1));
+            #z_accessor_storage = __runInitializers(this, _z_initializers, 1);
+            /*17*/
+            get z() { return this.#z_accessor_storage; }
+            set z(value) { this.#z_accessor_storage = value; }
+            static {
+                /*29*/
+                _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) };
+            }
+            static {
+                _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) };
+            }
+            static {
+                __runInitializers(_classThis, _classExtraInitializers);
+            }
+        },
+        __setFunctionName(_a, "C"),
+        /*29*/
+        _y = { value: __runInitializers(_classThis, _static_private_y_initializers, 1) },
+        _z_accessor_storage = { value: __runInitializers(_classThis, _static_private_z_initializers, 1) },
+        _a);
+    return C = _classThis;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=esnext).js b/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=esnext).js
new file mode 100644
index 0000000000000..af7af7170b91c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-commentPreservation(target=esnext).js
@@ -0,0 +1,154 @@
+//// [esDecorators-classExpression-commentPreservation.ts]
+declare var dec: any;
+
+/*1*/
+(
+/*2*/
+@dec
+/*3*/
+@dec
+/*4*/
+class C {
+    /*5*/
+    @dec
+    /*6*/
+    @dec
+    /*7*/
+    method() {}
+
+    /*8*/
+    @dec
+    /*9*/
+    @dec
+    /*10*/
+    get x() { return 1; }
+
+    /*11*/
+    @dec
+    /*12*/
+    @dec
+    /*13*/
+    set x(value: number) { }
+
+    /*14*/
+    @dec
+    /*15*/
+    @dec
+    /*16*/
+    y = 1;
+
+    /*17*/
+    @dec
+    /*18*/
+    @dec
+    /*19*/
+    accessor z = 1;
+
+    /*20*/
+    @dec
+    /*21*/
+    @dec
+    /*22*/
+    static #method() {}
+
+    /*23*/
+    @dec
+    /*24*/
+    @dec
+    /*25*/
+    static get #x() { return 1; }
+
+    /*26*/
+    @dec
+    /*27*/
+    @dec
+    /*28*/
+    static set #x(value: number) { }
+
+    /*29*/
+    @dec
+    /*30*/
+    @dec
+    /*31*/
+    static #y = 1;
+
+    /*32*/
+    @dec
+    /*33*/
+    @dec
+    /*34*/
+    static accessor #z = 1;
+}
+);
+
+
+//// [esDecorators-classExpression-commentPreservation.js]
+/*1*/
+(
+/*2*/
+@dec
+/*3*/
+@dec
+/*4*/
+class C {
+    /*5*/
+    @dec
+    /*6*/
+    @dec
+    /*7*/
+    method() { }
+    /*8*/
+    @dec
+    /*9*/
+    @dec
+    /*10*/
+    get x() { return 1; }
+    /*11*/
+    @dec
+    /*12*/
+    @dec
+    /*13*/
+    set x(value) { }
+    /*14*/
+    @dec
+    /*15*/
+    @dec
+    /*16*/
+    y = 1;
+    /*17*/
+    @dec
+    /*18*/
+    @dec
+    /*19*/
+    accessor z = 1;
+    /*20*/
+    @dec
+    /*21*/
+    @dec
+    /*22*/
+    static #method() { }
+    /*23*/
+    @dec
+    /*24*/
+    @dec
+    /*25*/
+    static get #x() { return 1; }
+    /*26*/
+    @dec
+    /*27*/
+    @dec
+    /*28*/
+    static set #x(value) { }
+    /*29*/
+    @dec
+    /*30*/
+    @dec
+    /*31*/
+    static #y = 1;
+    /*32*/
+    @dec
+    /*33*/
+    @dec
+    /*34*/
+    static accessor #z = 1;
+});
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.errors.txt
new file mode 100644
index 0000000000000..e3d8c00a64979
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.errors.txt
@@ -0,0 +1,20 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,18): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,18): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,18): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    declare var dec: any;
+    
+    // uses: __esDecorate, __runInitializers, __setFunctionName
+    export const C = @dec class {};
+                     ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                     ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                     ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.js
new file mode 100644
index 0000000000000..50b51a2c16037
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.js
@@ -0,0 +1,33 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.ts] ////
+
+//// [main.ts]
+declare var dec: any;
+
+// uses: __esDecorate, __runInitializers, __setFunctionName
+export const C = @dec class {};
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.C = void 0;
+const tslib_1 = require("tslib");
+// uses: __esDecorate, __runInitializers, __setFunctionName
+exports.C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "C");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.errors.txt
new file mode 100644
index 0000000000000..9804546976d04
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.errors.txt
@@ -0,0 +1,23 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    C &&= @dec class {};
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.js
new file mode 100644
index 0000000000000..197a8d003d7ba
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C &&= @dec class {};
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName
+C &&= (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "C");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.errors.txt
new file mode 100644
index 0000000000000..479a3df608e1f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.errors.txt
@@ -0,0 +1,23 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    C ??= @dec class {};
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.js
new file mode 100644
index 0000000000000..3f059fb32ab25
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C ??= @dec class {};
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName
+C ??= (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "C");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.errors.txt
new file mode 100644
index 0000000000000..791caf9a98ca9
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.errors.txt
@@ -0,0 +1,21 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,16): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,16): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,16): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    function f(C = @dec class {}) {}
+                   ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                   ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                   ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.js
new file mode 100644
index 0000000000000..c5b94a7fee6d5
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.js
@@ -0,0 +1,33 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+function f(C = @dec class {}) {}
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// uses __esDecorate, __runInitializers, __setFunctionName
+function f(C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "C");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})()) { }
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.errors.txt
new file mode 100644
index 0000000000000..85bf23275d22e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.errors.txt
@@ -0,0 +1,20 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,20): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,20): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,20): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    declare var dec: any;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    export const C = ((@dec class {}));
+                       ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                       ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                       ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.js
new file mode 100644
index 0000000000000..838ba46d2d42c
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.js
@@ -0,0 +1,33 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.ts] ////
+
+//// [main.ts]
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+export const C = ((@dec class {}));
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.C = void 0;
+const tslib_1 = require("tslib");
+// uses __esDecorate, __runInitializers, __setFunctionName
+exports.C = (((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "C");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})()));
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.errors.txt
new file mode 100644
index 0000000000000..7837d61dfe11b
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.errors.txt
@@ -0,0 +1,25 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,9): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,9): error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,9): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,9): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (4 errors) ====
+    export {};
+    declare var dec: any;
+    declare var x: any;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+    ({ [x]: @dec class {} });
+            ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+            ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+            ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+            ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.js
new file mode 100644
index 0000000000000..d1b27d09603f9
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.js
@@ -0,0 +1,35 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+declare var x: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+({ [x]: @dec class {} });
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+var _a;
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+({ [_a = tslib_1.__propKey(x)]: (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, _a);
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() });
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.errors.txt
new file mode 100644
index 0000000000000..43c15ecf8b4c4
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.errors.txt
@@ -0,0 +1,21 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,15): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,15): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,15): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    class C { D = @dec class {} }
+                  ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                  ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                  ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.js
new file mode 100644
index 0000000000000..76e9f13ae66a2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.js
@@ -0,0 +1,35 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+class C { D = @dec class {} }
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// uses __esDecorate, __runInitializers, __setFunctionName
+class C {
+    D = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, "D");
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })();
+}
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.errors.txt
new file mode 100644
index 0000000000000..c23b36e86e18e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.errors.txt
@@ -0,0 +1,28 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,11): error TS1166: A computed property name in a class property declaration must have a simple literal type or a 'unique symbol' type.
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,17): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,17): error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,17): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(6,17): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (5 errors) ====
+    export {};
+    declare var dec: any;
+    declare var x: any;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+    class C { [x] = @dec class {} }
+              ~~~
+!!! error TS1166: A computed property name in a class property declaration must have a simple literal type or a 'unique symbol' type.
+                    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__propKey' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.js
new file mode 100644
index 0000000000000..e61323d969d00
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.js
@@ -0,0 +1,37 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+declare var x: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+class C { [x] = @dec class {} }
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+var _a;
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+class C {
+    [_a = tslib_1.__propKey(x)] = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, _a);
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })();
+}
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.errors.txt
new file mode 100644
index 0000000000000..ec8070313f8b1
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.errors.txt
@@ -0,0 +1,27 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(8,5): error TS2538: Type 'any' cannot be used as an index type.
+tests/cases/conformance/esDecorators/classExpression/main.ts(8,13): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(8,13): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(8,13): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (4 errors) ====
+    export {};
+    declare var dec: any;
+    declare var x: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+    ({ [x]: C = @dec class {} } = {});
+        ~
+!!! error TS2538: Type 'any' cannot be used as an index type.
+                ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.js
new file mode 100644
index 0000000000000..0c3cc126a9c3a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.js
@@ -0,0 +1,37 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+declare var x: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+({ [x]: C = @dec class {} } = {});
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+({ [x]: C = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, "C");
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() } = {});
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.errors.txt
new file mode 100644
index 0000000000000..a625da3033607
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.errors.txt
@@ -0,0 +1,17 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,18): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,18): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (2 errors) ====
+    declare var dec: any;
+    
+    // uses: __esDecorate, __runInitializers
+    export const C = @dec class C {};
+                     ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                     ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.js
new file mode 100644
index 0000000000000..a6ab301b3cdfa
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.js
@@ -0,0 +1,32 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.ts] ////
+
+//// [main.ts]
+declare var dec: any;
+
+// uses: __esDecorate, __runInitializers
+export const C = @dec class C {};
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.C = void 0;
+const tslib_1 = require("tslib");
+// uses: __esDecorate, __runInitializers
+exports.C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var C = class {
+        static {
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.errors.txt
new file mode 100644
index 0000000000000..5a207f9520711
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.errors.txt
@@ -0,0 +1,20 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,17): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,17): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(4,17): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    declare var dec: any;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    export default (@dec class {});
+                    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+                    ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.js
new file mode 100644
index 0000000000000..bd13effbc5b9e
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.js
@@ -0,0 +1,32 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.ts] ////
+
+//// [main.ts]
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+export default (@dec class {});
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// uses __esDecorate, __runInitializers, __setFunctionName
+exports.default = ((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "default");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.errors.txt
new file mode 100644
index 0000000000000..b601b6f9a5905
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.errors.txt
@@ -0,0 +1,23 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,5): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    C = @dec class {};
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+        ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.js
new file mode 100644
index 0000000000000..1e5e1f8b11b5f
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C = @dec class {};
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName
+C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "C");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.errors.txt
new file mode 100644
index 0000000000000..40dea14b07a85
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.errors.txt
@@ -0,0 +1,23 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,6): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,6): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,6): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    [C = @dec class {}] = [];
+         ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+         ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+         ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.js
new file mode 100644
index 0000000000000..e772afc6a295a
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+[C = @dec class {}] = [];
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName
+[C = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, "C");
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })()] = [];
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.errors.txt
new file mode 100644
index 0000000000000..2195aed383ddd
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.errors.txt
@@ -0,0 +1,21 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,7): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,7): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(5,7): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    ({ C: @dec class {} });
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.js
new file mode 100644
index 0000000000000..6206e34b9b454
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.js
@@ -0,0 +1,33 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C: @dec class {} });
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C: (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, "C");
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() });
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.errors.txt
new file mode 100644
index 0000000000000..a31911e9b4a85
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.errors.txt
@@ -0,0 +1,23 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,11): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,11): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,11): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    ({ C: C = @dec class {} } = {});
+              ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+              ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+              ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.js
new file mode 100644
index 0000000000000..d428e95b2f5d5
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C: C = @dec class {} } = {});
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C: C = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, "C");
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() } = {});
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.errors.txt
new file mode 100644
index 0000000000000..52a3e6fdd6a83
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.errors.txt
@@ -0,0 +1,23 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,8): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,8): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,8): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    ({ C = @dec class {} } = {});
+           ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+           ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+           ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.js
new file mode 100644
index 0000000000000..e5118d682d071
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C = @dec class {} } = {});
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                tslib_1.__setFunctionName(this, "C");
+                tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() } = {});
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.errors.txt b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.errors.txt
new file mode 100644
index 0000000000000..7cdac9c21fd48
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.errors.txt
@@ -0,0 +1,23 @@
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+tests/cases/conformance/esDecorators/classExpression/main.ts(7,7): error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+
+
+==== tests/cases/conformance/esDecorators/classExpression/main.ts (3 errors) ====
+    export {};
+    declare var dec: any;
+    
+    var C;
+    
+    // uses __esDecorate, __runInitializers, __setFunctionName
+    C ||= @dec class {};
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__esDecorate' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__runInitializers' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+          ~~~~
+!!! error TS2343: This syntax requires an imported helper named '__setFunctionName' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
+    
+==== tests/cases/conformance/esDecorators/classExpression/tslib.d.ts (0 errors) ====
+    export {}
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.js b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.js
new file mode 100644
index 0000000000000..12695aac79984
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.js
@@ -0,0 +1,36 @@
+//// [tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.ts] ////
+
+//// [main.ts]
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C ||= @dec class {};
+
+//// [tslib.d.ts]
+export {}
+
+
+//// [main.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+var C;
+// uses __esDecorate, __runInitializers, __setFunctionName
+C ||= (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            tslib_1.__setFunctionName(this, "C");
+            tslib_1.__esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            tslib_1.__runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})();
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.1.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.1.js
new file mode 100644
index 0000000000000..dd3a023765437
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.1.js
@@ -0,0 +1,152 @@
+//// [esDecorators-classExpression-namedEvaluation.1.ts]
+declare let dec: any;
+
+let x: any;
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `=` AssignmentExpression
+
+x = @dec class { };
+x = class { @dec y: any; };
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `&&=` AssignmentExpression
+
+x &&= @dec class { };
+x &&= class { @dec y: any; };
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `||=` AssignmentExpression
+
+x ||= @dec class { };
+x ||= class { @dec y: any; };
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `??=` AssignmentExpression
+
+x ??= @dec class { };
+x ??= class { @dec y: any; };
+
+
+//// [esDecorators-classExpression-namedEvaluation.1.js]
+let x;
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `=` AssignmentExpression
+x = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            __setFunctionName(this, "x");
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})();
+x = (() => {
+    let _instanceExtraInitializers = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class {
+        static {
+            __setFunctionName(this, "x");
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+    };
+})();
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `&&=` AssignmentExpression
+x &&= (() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var class_2 = class {
+        static {
+            __setFunctionName(this, "x");
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            class_2 = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return class_2 = _classThis_1;
+})();
+x &&= (() => {
+    let _instanceExtraInitializers_1 = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class {
+        static {
+            __setFunctionName(this, "x");
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+    };
+})();
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `||=` AssignmentExpression
+x ||= (() => {
+    let _classDecorators_2 = [dec];
+    let _classDescriptor_2;
+    let _classExtraInitializers_2 = [];
+    let _classThis_2;
+    var class_3 = class {
+        static {
+            __setFunctionName(this, "x");
+            __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+            class_3 = _classThis_2 = _classDescriptor_2.value;
+            __runInitializers(_classThis_2, _classExtraInitializers_2);
+        }
+    };
+    return class_3 = _classThis_2;
+})();
+x ||= (() => {
+    let _instanceExtraInitializers_2 = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class {
+        static {
+            __setFunctionName(this, "x");
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_2);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers_2), __runInitializers(this, _y_initializers, void 0));
+    };
+})();
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `??=` AssignmentExpression
+x ??= (() => {
+    let _classDecorators_3 = [dec];
+    let _classDescriptor_3;
+    let _classExtraInitializers_3 = [];
+    let _classThis_3;
+    var class_4 = class {
+        static {
+            __setFunctionName(this, "x");
+            __esDecorate(null, _classDescriptor_3 = { value: this }, _classDecorators_3, { kind: "class", name: this.name }, null, _classExtraInitializers_3);
+            class_4 = _classThis_3 = _classDescriptor_3.value;
+            __runInitializers(_classThis_3, _classExtraInitializers_3);
+        }
+    };
+    return class_4 = _classThis_3;
+})();
+x ??= (() => {
+    let _instanceExtraInitializers_3 = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class {
+        static {
+            __setFunctionName(this, "x");
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_3);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers_3), __runInitializers(this, _y_initializers, void 0));
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.10.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.10.js
new file mode 100644
index 0000000000000..4791d945bd8d5
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.10.js
@@ -0,0 +1,362 @@
+//// [esDecorators-classExpression-namedEvaluation.10.ts]
+declare let dec: any, f: any;
+
+// 10.2.1.3 RS: EvaluateBody
+//   Initializer : `=` AssignmentExpression
+
+{ class C { static x = @dec class {}; } }
+{ class C { static "x" = @dec class {}; } }
+{ class C { static 0 = @dec class {}; } }
+{ class C { static ["x"] = @dec class {}; } }
+{ class C { static [0] = @dec class {}; } }
+// @ts-ignore
+{ class C { static [f()] = @dec class {}; } }
+
+// __proto__ is not special in a class field
+{ class C { static __proto__ = @dec class {}; } }
+{ class C { static "__proto__" = @dec class {}; } }
+
+{ class C { static x = class { @dec y: any }; } }
+{ class C { static "x" = class { @dec y: any }; } }
+{ class C { static 0 = class { @dec y: any }; } }
+{ class C { static ["x"] = class { @dec y: any }; } }
+{ class C { static [0] = class { @dec y: any }; } }
+// @ts-ignore
+{ class C { static [f()] = @dec class {}; } }
+
+// __proto__ is not special in a class field
+{ class C { static __proto__ = class { @dec y: any }; } }
+{ class C { static "__proto__" = class { @dec y: any }; } }
+
+// ensure nested named evaluation happens when field is also transformed
+{ class C { @dec static x = @dec class {}; } }
+
+
+//// [esDecorators-classExpression-namedEvaluation.10.js]
+var _a, _b;
+// 10.2.1.3 RS: EvaluateBody
+//   Initializer : `=` AssignmentExpression
+{
+    class C {
+        static x = (() => {
+            let _classDecorators = [dec];
+            let _classDescriptor;
+            let _classExtraInitializers = [];
+            let _classThis;
+            var class_1 = class {
+                static {
+                    __setFunctionName(this, "x");
+                    __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                    class_1 = _classThis = _classDescriptor.value;
+                    __runInitializers(_classThis, _classExtraInitializers);
+                }
+            };
+            return class_1 = _classThis;
+        })();
+    }
+}
+{
+    class C {
+        static "x" = (() => {
+            let _classDecorators_1 = [dec];
+            let _classDescriptor_1;
+            let _classExtraInitializers_1 = [];
+            let _classThis_1;
+            var class_2 = class {
+                static {
+                    __setFunctionName(this, "x");
+                    __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+                    class_2 = _classThis_1 = _classDescriptor_1.value;
+                    __runInitializers(_classThis_1, _classExtraInitializers_1);
+                }
+            };
+            return class_2 = _classThis_1;
+        })();
+    }
+}
+{
+    class C {
+        static 0 = (() => {
+            let _classDecorators_2 = [dec];
+            let _classDescriptor_2;
+            let _classExtraInitializers_2 = [];
+            let _classThis_2;
+            var class_3 = class {
+                static {
+                    __setFunctionName(this, "0");
+                    __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+                    class_3 = _classThis_2 = _classDescriptor_2.value;
+                    __runInitializers(_classThis_2, _classExtraInitializers_2);
+                }
+            };
+            return class_3 = _classThis_2;
+        })();
+    }
+}
+{
+    class C {
+        static ["x"] = (() => {
+            let _classDecorators_3 = [dec];
+            let _classDescriptor_3;
+            let _classExtraInitializers_3 = [];
+            let _classThis_3;
+            var class_4 = class {
+                static {
+                    __setFunctionName(this, "x");
+                    __esDecorate(null, _classDescriptor_3 = { value: this }, _classDecorators_3, { kind: "class", name: this.name }, null, _classExtraInitializers_3);
+                    class_4 = _classThis_3 = _classDescriptor_3.value;
+                    __runInitializers(_classThis_3, _classExtraInitializers_3);
+                }
+            };
+            return class_4 = _classThis_3;
+        })();
+    }
+}
+{
+    class C {
+        static [0] = (() => {
+            let _classDecorators_4 = [dec];
+            let _classDescriptor_4;
+            let _classExtraInitializers_4 = [];
+            let _classThis_4;
+            var class_5 = class {
+                static {
+                    __setFunctionName(this, "0");
+                    __esDecorate(null, _classDescriptor_4 = { value: this }, _classDecorators_4, { kind: "class", name: this.name }, null, _classExtraInitializers_4);
+                    class_5 = _classThis_4 = _classDescriptor_4.value;
+                    __runInitializers(_classThis_4, _classExtraInitializers_4);
+                }
+            };
+            return class_5 = _classThis_4;
+        })();
+    }
+}
+// @ts-ignore
+{
+    class C {
+        static [_a = __propKey(f())] = (() => {
+            let _classDecorators_5 = [dec];
+            let _classDescriptor_5;
+            let _classExtraInitializers_5 = [];
+            let _classThis_5;
+            var class_6 = class {
+                static {
+                    __setFunctionName(this, _a);
+                    __esDecorate(null, _classDescriptor_5 = { value: this }, _classDecorators_5, { kind: "class", name: this.name }, null, _classExtraInitializers_5);
+                    class_6 = _classThis_5 = _classDescriptor_5.value;
+                    __runInitializers(_classThis_5, _classExtraInitializers_5);
+                }
+            };
+            return class_6 = _classThis_5;
+        })();
+    }
+}
+// __proto__ is not special in a class field
+{
+    class C {
+        static __proto__ = (() => {
+            let _classDecorators_6 = [dec];
+            let _classDescriptor_6;
+            let _classExtraInitializers_6 = [];
+            let _classThis_6;
+            var class_7 = class {
+                static {
+                    __setFunctionName(this, "__proto__");
+                    __esDecorate(null, _classDescriptor_6 = { value: this }, _classDecorators_6, { kind: "class", name: this.name }, null, _classExtraInitializers_6);
+                    class_7 = _classThis_6 = _classDescriptor_6.value;
+                    __runInitializers(_classThis_6, _classExtraInitializers_6);
+                }
+            };
+            return class_7 = _classThis_6;
+        })();
+    }
+}
+{
+    class C {
+        static "__proto__" = (() => {
+            let _classDecorators_7 = [dec];
+            let _classDescriptor_7;
+            let _classExtraInitializers_7 = [];
+            let _classThis_7;
+            var class_8 = class {
+                static {
+                    __setFunctionName(this, "__proto__");
+                    __esDecorate(null, _classDescriptor_7 = { value: this }, _classDecorators_7, { kind: "class", name: this.name }, null, _classExtraInitializers_7);
+                    class_8 = _classThis_7 = _classDescriptor_7.value;
+                    __runInitializers(_classThis_7, _classExtraInitializers_7);
+                }
+            };
+            return class_8 = _classThis_7;
+        })();
+    }
+}
+{
+    class C {
+        static x = (() => {
+            let _instanceExtraInitializers = [];
+            let _y_decorators;
+            let _y_initializers = [];
+            return class {
+                static {
+                    __setFunctionName(this, "x");
+                    _y_decorators = [dec];
+                    __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+                }
+                y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+            };
+        })();
+    }
+}
+{
+    class C {
+        static "x" = (() => {
+            let _instanceExtraInitializers_1 = [];
+            let _y_decorators;
+            let _y_initializers = [];
+            return class {
+                static {
+                    __setFunctionName(this, "x");
+                    _y_decorators = [dec];
+                    __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+                }
+                y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+            };
+        })();
+    }
+}
+{
+    class C {
+        static 0 = (() => {
+            let _instanceExtraInitializers_2 = [];
+            let _y_decorators;
+            let _y_initializers = [];
+            return class {
+                static {
+                    __setFunctionName(this, "0");
+                    _y_decorators = [dec];
+                    __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_2);
+                }
+                y = (__runInitializers(this, _instanceExtraInitializers_2), __runInitializers(this, _y_initializers, void 0));
+            };
+        })();
+    }
+}
+{
+    class C {
+        static ["x"] = (() => {
+            let _instanceExtraInitializers_3 = [];
+            let _y_decorators;
+            let _y_initializers = [];
+            return class {
+                static {
+                    __setFunctionName(this, "x");
+                    _y_decorators = [dec];
+                    __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_3);
+                }
+                y = (__runInitializers(this, _instanceExtraInitializers_3), __runInitializers(this, _y_initializers, void 0));
+            };
+        })();
+    }
+}
+{
+    class C {
+        static [0] = (() => {
+            let _instanceExtraInitializers_4 = [];
+            let _y_decorators;
+            let _y_initializers = [];
+            return class {
+                static {
+                    __setFunctionName(this, "0");
+                    _y_decorators = [dec];
+                    __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_4);
+                }
+                y = (__runInitializers(this, _instanceExtraInitializers_4), __runInitializers(this, _y_initializers, void 0));
+            };
+        })();
+    }
+}
+// @ts-ignore
+{
+    class C {
+        static [_b = __propKey(f())] = (() => {
+            let _classDecorators_8 = [dec];
+            let _classDescriptor_8;
+            let _classExtraInitializers_8 = [];
+            let _classThis_8;
+            var class_9 = class {
+                static {
+                    __setFunctionName(this, _b);
+                    __esDecorate(null, _classDescriptor_8 = { value: this }, _classDecorators_8, { kind: "class", name: this.name }, null, _classExtraInitializers_8);
+                    class_9 = _classThis_8 = _classDescriptor_8.value;
+                    __runInitializers(_classThis_8, _classExtraInitializers_8);
+                }
+            };
+            return class_9 = _classThis_8;
+        })();
+    }
+}
+// __proto__ is not special in a class field
+{
+    class C {
+        static __proto__ = (() => {
+            let _instanceExtraInitializers_5 = [];
+            let _y_decorators;
+            let _y_initializers = [];
+            return class {
+                static {
+                    __setFunctionName(this, "__proto__");
+                    _y_decorators = [dec];
+                    __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_5);
+                }
+                y = (__runInitializers(this, _instanceExtraInitializers_5), __runInitializers(this, _y_initializers, void 0));
+            };
+        })();
+    }
+}
+{
+    class C {
+        static "__proto__" = (() => {
+            let _instanceExtraInitializers_6 = [];
+            let _y_decorators;
+            let _y_initializers = [];
+            return class {
+                static {
+                    __setFunctionName(this, "__proto__");
+                    _y_decorators = [dec];
+                    __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_6);
+                }
+                y = (__runInitializers(this, _instanceExtraInitializers_6), __runInitializers(this, _y_initializers, void 0));
+            };
+        })();
+    }
+}
+// ensure nested named evaluation happens when field is also transformed
+{
+    let C = (() => {
+        let _staticExtraInitializers = [];
+        let _static_x_decorators;
+        let _static_x_initializers = [];
+        return class C {
+            static {
+                _static_x_decorators = [dec];
+                __esDecorate(null, null, _static_x_decorators, { kind: "field", name: "x", static: true, private: false }, _static_x_initializers, _staticExtraInitializers);
+                __runInitializers(this, _staticExtraInitializers);
+            }
+            static x = __runInitializers(this, _static_x_initializers, (() => {
+                let _classDecorators_9 = [dec];
+                let _classDescriptor_9;
+                let _classExtraInitializers_9 = [];
+                let _classThis_9;
+                var class_10 = class {
+                    static {
+                        __setFunctionName(this, "x");
+                        __esDecorate(null, _classDescriptor_9 = { value: this }, _classDecorators_9, { kind: "class", name: this.name }, null, _classExtraInitializers_9);
+                        class_10 = _classThis_9 = _classDescriptor_9.value;
+                        __runInitializers(_classThis_9, _classExtraInitializers_9);
+                    }
+                };
+                return class_10 = _classThis_9;
+            })());
+        };
+    })();
+}
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.11.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.11.js
new file mode 100644
index 0000000000000..c52affc2fd9d8
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.11.js
@@ -0,0 +1,70 @@
+//// [esDecorators-classExpression-namedEvaluation.11.ts]
+declare let dec: any;
+
+// No NamedEvaluation, no class name
+
+(@dec class {});
+(class { @dec y: any });
+
+// No NamedEvaluation, class name
+
+(@dec class C {});
+(class C { @dec y: any });
+
+
+//// [esDecorators-classExpression-namedEvaluation.11.js]
+// No NamedEvaluation, no class name
+((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            __setFunctionName(this, "");
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})());
+((() => {
+    let _instanceExtraInitializers = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class {
+        static {
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+    };
+})());
+// No NamedEvaluation, class name
+((() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    var C = class {
+        static {
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            C = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return C = _classThis_1;
+})());
+((() => {
+    let _instanceExtraInitializers_1 = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class C {
+        static {
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+    };
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.2.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.2.js
new file mode 100644
index 0000000000000..14f2f5cbb8e2b
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.2.js
@@ -0,0 +1,253 @@
+//// [esDecorators-classExpression-namedEvaluation.2.ts]
+declare let dec: any;
+
+let x: any, f: any;
+
+// 13.2.5.5 RS: PropertyDefinitionEvaluation
+//  PropertyAssignment : PropertyName `:` AssignmentExpression
+
+({ x: @dec class { } });
+({ x: class { @dec y: any; } });
+
+({ "x": @dec class { } });
+({ "x": class { @dec y: any; } });
+
+({ 0: @dec class { } });
+({ 0: class { @dec y: any; } });
+
+({ ["x"]: @dec class { } });
+({ ["x"]: class { @dec y: any; } });
+
+({ [0]: @dec class { } });
+({ [0]: class { @dec y: any; } });
+
+({ [f()]: @dec class { } });
+({ [f()]: class { @dec y: any; } });
+
+// __proto__ setters do not perform NamedEvaluation
+({ __proto__: @dec class { } });
+({ "__proto__": @dec class { } });
+
+// "__proto__" in a computed property name *does* perform NamedEvaluation
+({ ["__proto__"]: @dec class { } });
+
+//// [esDecorators-classExpression-namedEvaluation.2.js]
+var _a, _b;
+let x, f;
+// 13.2.5.5 RS: PropertyDefinitionEvaluation
+//  PropertyAssignment : PropertyName `:` AssignmentExpression
+({ x: (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                __runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() });
+({ x: (() => {
+        let _instanceExtraInitializers = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() });
+({ "x": (() => {
+        let _classDecorators_1 = [dec];
+        let _classDescriptor_1;
+        let _classExtraInitializers_1 = [];
+        let _classThis_1;
+        var class_2 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+                class_2 = _classThis_1 = _classDescriptor_1.value;
+                __runInitializers(_classThis_1, _classExtraInitializers_1);
+            }
+        };
+        return class_2 = _classThis_1;
+    })() });
+({ "x": (() => {
+        let _instanceExtraInitializers_1 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() });
+({ 0: (() => {
+        let _classDecorators_2 = [dec];
+        let _classDescriptor_2;
+        let _classExtraInitializers_2 = [];
+        let _classThis_2;
+        var class_3 = class {
+            static {
+                __setFunctionName(this, "0");
+                __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+                class_3 = _classThis_2 = _classDescriptor_2.value;
+                __runInitializers(_classThis_2, _classExtraInitializers_2);
+            }
+        };
+        return class_3 = _classThis_2;
+    })() });
+({ 0: (() => {
+        let _instanceExtraInitializers_2 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "0");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_2);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_2), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() });
+({ ["x"]: (() => {
+        let _classDecorators_3 = [dec];
+        let _classDescriptor_3;
+        let _classExtraInitializers_3 = [];
+        let _classThis_3;
+        var class_4 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor_3 = { value: this }, _classDecorators_3, { kind: "class", name: this.name }, null, _classExtraInitializers_3);
+                class_4 = _classThis_3 = _classDescriptor_3.value;
+                __runInitializers(_classThis_3, _classExtraInitializers_3);
+            }
+        };
+        return class_4 = _classThis_3;
+    })() });
+({ ["x"]: (() => {
+        let _instanceExtraInitializers_3 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_3);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_3), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() });
+({ [0]: (() => {
+        let _classDecorators_4 = [dec];
+        let _classDescriptor_4;
+        let _classExtraInitializers_4 = [];
+        let _classThis_4;
+        var class_5 = class {
+            static {
+                __setFunctionName(this, "0");
+                __esDecorate(null, _classDescriptor_4 = { value: this }, _classDecorators_4, { kind: "class", name: this.name }, null, _classExtraInitializers_4);
+                class_5 = _classThis_4 = _classDescriptor_4.value;
+                __runInitializers(_classThis_4, _classExtraInitializers_4);
+            }
+        };
+        return class_5 = _classThis_4;
+    })() });
+({ [0]: (() => {
+        let _instanceExtraInitializers_4 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "0");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_4);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_4), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() });
+({ [_a = __propKey(f())]: (() => {
+        let _classDecorators_5 = [dec];
+        let _classDescriptor_5;
+        let _classExtraInitializers_5 = [];
+        let _classThis_5;
+        var class_6 = class {
+            static {
+                __setFunctionName(this, _a);
+                __esDecorate(null, _classDescriptor_5 = { value: this }, _classDecorators_5, { kind: "class", name: this.name }, null, _classExtraInitializers_5);
+                class_6 = _classThis_5 = _classDescriptor_5.value;
+                __runInitializers(_classThis_5, _classExtraInitializers_5);
+            }
+        };
+        return class_6 = _classThis_5;
+    })() });
+({ [_b = __propKey(f())]: (() => {
+        let _instanceExtraInitializers_5 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, _b);
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_5);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_5), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() });
+// __proto__ setters do not perform NamedEvaluation
+({ __proto__: (() => {
+        let _classDecorators_6 = [dec];
+        let _classDescriptor_6;
+        let _classExtraInitializers_6 = [];
+        let _classThis_6;
+        var class_7 = class {
+            static {
+                __setFunctionName(this, "");
+                __esDecorate(null, _classDescriptor_6 = { value: this }, _classDecorators_6, { kind: "class", name: this.name }, null, _classExtraInitializers_6);
+                class_7 = _classThis_6 = _classDescriptor_6.value;
+                __runInitializers(_classThis_6, _classExtraInitializers_6);
+            }
+        };
+        return class_7 = _classThis_6;
+    })() });
+({ "__proto__": (() => {
+        let _classDecorators_7 = [dec];
+        let _classDescriptor_7;
+        let _classExtraInitializers_7 = [];
+        let _classThis_7;
+        var class_8 = class {
+            static {
+                __setFunctionName(this, "");
+                __esDecorate(null, _classDescriptor_7 = { value: this }, _classDecorators_7, { kind: "class", name: this.name }, null, _classExtraInitializers_7);
+                class_8 = _classThis_7 = _classDescriptor_7.value;
+                __runInitializers(_classThis_7, _classExtraInitializers_7);
+            }
+        };
+        return class_8 = _classThis_7;
+    })() });
+// "__proto__" in a computed property name *does* perform NamedEvaluation
+({ ["__proto__"]: (() => {
+        let _classDecorators_8 = [dec];
+        let _classDescriptor_8;
+        let _classExtraInitializers_8 = [];
+        let _classThis_8;
+        var class_9 = class {
+            static {
+                __setFunctionName(this, "__proto__");
+                __esDecorate(null, _classDescriptor_8 = { value: this }, _classDecorators_8, { kind: "class", name: this.name }, null, _classExtraInitializers_8);
+                class_9 = _classThis_8 = _classDescriptor_8.value;
+                __runInitializers(_classThis_8, _classExtraInitializers_8);
+            }
+        };
+        return class_9 = _classThis_8;
+    })() });
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.3.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.3.js
new file mode 100644
index 0000000000000..52df2183693a6
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.3.js
@@ -0,0 +1,120 @@
+//// [esDecorators-classExpression-namedEvaluation.3.ts]
+declare let dec: any;
+
+// 14.3.1.2 RS: Evaluation
+//   LexicalBinding : BindingIdentifier Initializer
+
+{ let x = @dec class { }; }
+{ let x = class { @dec y: any; }; }
+
+{ const x = @dec class { }; }
+{ const x = class { @dec y: any; }; }
+
+// 14.3.2.1 RS: Evaluation
+//   VariableDeclaration : BindingIdentifier Initializer
+
+{ var x2 = @dec class { }; }
+{ var x1 = class { @dec y: any; }; }
+
+
+//// [esDecorators-classExpression-namedEvaluation.3.js]
+// 14.3.1.2 RS: Evaluation
+//   LexicalBinding : BindingIdentifier Initializer
+{
+    let x = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                __runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })();
+}
+{
+    let x = (() => {
+        let _instanceExtraInitializers = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        };
+    })();
+}
+{
+    const x = (() => {
+        let _classDecorators_1 = [dec];
+        let _classDescriptor_1;
+        let _classExtraInitializers_1 = [];
+        let _classThis_1;
+        var class_2 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+                class_2 = _classThis_1 = _classDescriptor_1.value;
+                __runInitializers(_classThis_1, _classExtraInitializers_1);
+            }
+        };
+        return class_2 = _classThis_1;
+    })();
+}
+{
+    const x = (() => {
+        let _instanceExtraInitializers_1 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+        };
+    })();
+}
+// 14.3.2.1 RS: Evaluation
+//   VariableDeclaration : BindingIdentifier Initializer
+{
+    var x2 = (() => {
+        let _classDecorators_2 = [dec];
+        let _classDescriptor_2;
+        let _classExtraInitializers_2 = [];
+        let _classThis_2;
+        var class_3 = class {
+            static {
+                __setFunctionName(this, "x2");
+                __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+                class_3 = _classThis_2 = _classDescriptor_2.value;
+                __runInitializers(_classThis_2, _classExtraInitializers_2);
+            }
+        };
+        return class_3 = _classThis_2;
+    })();
+}
+{
+    var x1 = (() => {
+        let _instanceExtraInitializers_2 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x1");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_2);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_2), __runInitializers(this, _y_initializers, void 0));
+        };
+    })();
+}
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.4.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.4.js
new file mode 100644
index 0000000000000..714b994e1c5ca
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.4.js
@@ -0,0 +1,121 @@
+//// [esDecorators-classExpression-namedEvaluation.4.ts]
+declare let dec: any, obj: any;
+
+// 8.6.3 RS: IteratorBindingInitialization
+//  SingleNameBinding : BindingIdentifier Initializer?
+
+{ const [x = @dec class { }] = obj; }
+{ const [x = class { @dec y: any; }] = obj; }
+
+// 14.3.3.3 RS: KeyedBindingInitialization
+//  SingleNameBinding : BindingIdentifier Initializer?
+
+{ const { x = @dec class { } } = obj; }
+{ const { x = class { @dec y: any; } } = obj; }
+
+{ const { y: x = @dec class { } } = obj; }
+{ const { y: x = class { @dec y: any; } } = obj; }
+
+
+
+//// [esDecorators-classExpression-namedEvaluation.4.js]
+// 8.6.3 RS: IteratorBindingInitialization
+//  SingleNameBinding : BindingIdentifier Initializer?
+{
+    const [x = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                __runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })()] = obj;
+}
+{
+    const [x = (() => {
+        let _instanceExtraInitializers = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        };
+    })()] = obj;
+}
+// 14.3.3.3 RS: KeyedBindingInitialization
+//  SingleNameBinding : BindingIdentifier Initializer?
+{
+    const { x = (() => {
+        let _classDecorators_1 = [dec];
+        let _classDescriptor_1;
+        let _classExtraInitializers_1 = [];
+        let _classThis_1;
+        var class_2 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+                class_2 = _classThis_1 = _classDescriptor_1.value;
+                __runInitializers(_classThis_1, _classExtraInitializers_1);
+            }
+        };
+        return class_2 = _classThis_1;
+    })() } = obj;
+}
+{
+    const { x = (() => {
+        let _instanceExtraInitializers_1 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() } = obj;
+}
+{
+    const { y: x = (() => {
+        let _classDecorators_2 = [dec];
+        let _classDescriptor_2;
+        let _classExtraInitializers_2 = [];
+        let _classThis_2;
+        var class_3 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor_2 = { value: this }, _classDecorators_2, { kind: "class", name: this.name }, null, _classExtraInitializers_2);
+                class_3 = _classThis_2 = _classDescriptor_2.value;
+                __runInitializers(_classThis_2, _classExtraInitializers_2);
+            }
+        };
+        return class_3 = _classThis_2;
+    })() } = obj;
+}
+{
+    const { y: x = (() => {
+        let _instanceExtraInitializers_2 = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_2);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers_2), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() } = obj;
+}
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.5.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.5.js
new file mode 100644
index 0000000000000..06d3c745c566d
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.5.js
@@ -0,0 +1,41 @@
+//// [esDecorators-classExpression-namedEvaluation.5.ts]
+declare let dec: any, obj: any, x: any;
+
+// 13.15.5.3 RS: PropertyDestructuringAssignmentEvaluation
+//   AssignmentProperty : IdentifierReference Initializer?
+
+({ x = @dec class { } } = obj);
+({ x = class { @dec y: any; } } = obj);
+
+
+//// [esDecorators-classExpression-namedEvaluation.5.js]
+// 13.15.5.3 RS: PropertyDestructuringAssignmentEvaluation
+//   AssignmentProperty : IdentifierReference Initializer?
+({ x = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                __runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() } = obj);
+({ x = (() => {
+        let _instanceExtraInitializers = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() } = obj);
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.6.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.6.js
new file mode 100644
index 0000000000000..caf357a9a7280
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.6.js
@@ -0,0 +1,41 @@
+//// [esDecorators-classExpression-namedEvaluation.6.ts]
+declare let dec: any, obj: any, x: any;
+
+// 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+//   AssignmentElement : DestructuringAssignmentTarget Initializer?
+
+({ y: x = @dec class { } } = obj);
+({ y: x = class { @dec y: any; } } = obj);
+
+
+//// [esDecorators-classExpression-namedEvaluation.6.js]
+// 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+//   AssignmentElement : DestructuringAssignmentTarget Initializer?
+({ y: x = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                __runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })() } = obj);
+({ y: x = (() => {
+        let _instanceExtraInitializers = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        };
+    })() } = obj);
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.7.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.7.js
new file mode 100644
index 0000000000000..bd76e88acd2f6
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.7.js
@@ -0,0 +1,41 @@
+//// [esDecorators-classExpression-namedEvaluation.7.ts]
+declare let dec: any, obj: any, x: any;
+
+// 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+//   AssignmentElement : DestructuringAssignmentTarget Initializer?
+
+[x = @dec class { }] = obj;
+[x = class { @dec y: any; }] = obj;
+
+
+//// [esDecorators-classExpression-namedEvaluation.7.js]
+// 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+//   AssignmentElement : DestructuringAssignmentTarget Initializer?
+[x = (() => {
+        let _classDecorators = [dec];
+        let _classDescriptor;
+        let _classExtraInitializers = [];
+        let _classThis;
+        var class_1 = class {
+            static {
+                __setFunctionName(this, "x");
+                __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+                class_1 = _classThis = _classDescriptor.value;
+                __runInitializers(_classThis, _classExtraInitializers);
+            }
+        };
+        return class_1 = _classThis;
+    })()] = obj;
+[x = (() => {
+        let _instanceExtraInitializers = [];
+        let _y_decorators;
+        let _y_initializers = [];
+        return class {
+            static {
+                __setFunctionName(this, "x");
+                _y_decorators = [dec];
+                __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            }
+            y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        };
+    })()] = obj;
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.8.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.8.js
new file mode 100644
index 0000000000000..cb51acdc545ee
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.8.js
@@ -0,0 +1,52 @@
+//// [tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.8.ts] ////
+
+//// [a.ts]
+declare let dec: any;
+
+// 16.2.3.7 RS: Evaluation
+//   ExportDeclaration : `export` `default` AssignmentExpression `;` 
+
+export default (@dec class { });
+
+//// [b.ts]
+declare let dec: any;
+
+// 16.2.3.7 RS: Evaluation
+//   ExportDeclaration : `export` `default` AssignmentExpression `;` 
+
+export default (class { @dec y: any });
+
+//// [a.js]
+// 16.2.3.7 RS: Evaluation
+//   ExportDeclaration : `export` `default` AssignmentExpression `;` 
+export default ((() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            __setFunctionName(this, "default");
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})());
+//// [b.js]
+// 16.2.3.7 RS: Evaluation
+//   ExportDeclaration : `export` `default` AssignmentExpression `;` 
+export default ((() => {
+    let _instanceExtraInitializers = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class {
+        static {
+            __setFunctionName(this, "default");
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+    };
+})());
diff --git a/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.9.js b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.9.js
new file mode 100644
index 0000000000000..f65818ec45578
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-classExpression-namedEvaluation.9.js
@@ -0,0 +1,43 @@
+//// [tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.9.ts] ////
+
+//// [a.ts]
+declare let dec: any;
+
+export = @dec class { };
+
+//// [b.ts]
+declare let dec: any;
+
+export = class { @dec y: any };
+
+//// [a.js]
+"use strict";
+module.exports = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var class_1 = class {
+        static {
+            __setFunctionName(this, "");
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            class_1 = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return class_1 = _classThis;
+})();
+//// [b.js]
+"use strict";
+module.exports = (() => {
+    let _instanceExtraInitializers = [];
+    let _y_decorators;
+    let _y_initializers = [];
+    return class {
+        static {
+            _y_decorators = [dec];
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        }
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+    };
+})();
diff --git a/tests/baselines/reference/esDecorators-contextualTypes.2.js b/tests/baselines/reference/esDecorators-contextualTypes.2.js
new file mode 100644
index 0000000000000..b21efbebed9c4
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-contextualTypes.2.js
@@ -0,0 +1,57 @@
+//// [esDecorators-contextualTypes.2.ts]
+class C {
+    @boundMethodLogger("Yadda", /*bound*/ true)
+    foo() {
+        this.fooHelper();
+    }
+
+    fooHelper() {
+        console.log("Behold! The actual method implementation!")
+    }
+};
+export { C };
+
+function boundMethodLogger<This, Args extends any[], Return>(source: string, bound = true) {
+    return function loggedDecorator(
+        target: (this: This, ...args: Args) => Return,
+        context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+    ): ((this: This, ...args: Args) => Return) {
+
+        if (bound) {
+            context.addInitializer(function () {
+                (this as any)[context.name] = (this as any)[context.name].bind(this);
+            });
+        }
+
+        return function (this, ...args) {
+            console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`);
+            return target.apply(this, args);
+        }
+    }
+}
+
+//// [esDecorators-contextualTypes.2.js]
+class C {
+    @boundMethodLogger("Yadda", /*bound*/ true)
+    foo() {
+        this.fooHelper();
+    }
+    fooHelper() {
+        console.log("Behold! The actual method implementation!");
+    }
+}
+;
+export { C };
+function boundMethodLogger(source, bound = true) {
+    return function loggedDecorator(target, context) {
+        if (bound) {
+            context.addInitializer(function () {
+                this[context.name] = this[context.name].bind(this);
+            });
+        }
+        return function (...args) {
+            console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`);
+            return target.apply(this, args);
+        };
+    };
+}
diff --git a/tests/baselines/reference/esDecorators-contextualTypes.2.symbols b/tests/baselines/reference/esDecorators-contextualTypes.2.symbols
new file mode 100644
index 0000000000000..200247e987242
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-contextualTypes.2.symbols
@@ -0,0 +1,110 @@
+=== tests/cases/conformance/esDecorators/esDecorators-contextualTypes.2.ts ===
+class C {
+>C : Symbol(C, Decl(esDecorators-contextualTypes.2.ts, 0, 0))
+
+    @boundMethodLogger("Yadda", /*bound*/ true)
+>boundMethodLogger : Symbol(boundMethodLogger, Decl(esDecorators-contextualTypes.2.ts, 10, 13))
+
+    foo() {
+>foo : Symbol(C.foo, Decl(esDecorators-contextualTypes.2.ts, 0, 9))
+
+        this.fooHelper();
+>this.fooHelper : Symbol(C.fooHelper, Decl(esDecorators-contextualTypes.2.ts, 4, 5))
+>this : Symbol(C, Decl(esDecorators-contextualTypes.2.ts, 0, 0))
+>fooHelper : Symbol(C.fooHelper, Decl(esDecorators-contextualTypes.2.ts, 4, 5))
+    }
+
+    fooHelper() {
+>fooHelper : Symbol(C.fooHelper, Decl(esDecorators-contextualTypes.2.ts, 4, 5))
+
+        console.log("Behold! The actual method implementation!")
+>console.log : Symbol(Console.log, Decl(lib.dom.d.ts, --, --))
+>console : Symbol(console, Decl(lib.dom.d.ts, --, --))
+>log : Symbol(Console.log, Decl(lib.dom.d.ts, --, --))
+    }
+};
+export { C };
+>C : Symbol(C, Decl(esDecorators-contextualTypes.2.ts, 10, 8))
+
+function boundMethodLogger<This, Args extends any[], Return>(source: string, bound = true) {
+>boundMethodLogger : Symbol(boundMethodLogger, Decl(esDecorators-contextualTypes.2.ts, 10, 13))
+>This : Symbol(This, Decl(esDecorators-contextualTypes.2.ts, 12, 27))
+>Args : Symbol(Args, Decl(esDecorators-contextualTypes.2.ts, 12, 32))
+>Return : Symbol(Return, Decl(esDecorators-contextualTypes.2.ts, 12, 52))
+>source : Symbol(source, Decl(esDecorators-contextualTypes.2.ts, 12, 61))
+>bound : Symbol(bound, Decl(esDecorators-contextualTypes.2.ts, 12, 76))
+
+    return function loggedDecorator(
+>loggedDecorator : Symbol(loggedDecorator, Decl(esDecorators-contextualTypes.2.ts, 13, 10))
+
+        target: (this: This, ...args: Args) => Return,
+>target : Symbol(target, Decl(esDecorators-contextualTypes.2.ts, 13, 36))
+>this : Symbol(this, Decl(esDecorators-contextualTypes.2.ts, 14, 17))
+>This : Symbol(This, Decl(esDecorators-contextualTypes.2.ts, 12, 27))
+>args : Symbol(args, Decl(esDecorators-contextualTypes.2.ts, 14, 28))
+>Args : Symbol(Args, Decl(esDecorators-contextualTypes.2.ts, 12, 32))
+>Return : Symbol(Return, Decl(esDecorators-contextualTypes.2.ts, 12, 52))
+
+        context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+>context : Symbol(context, Decl(esDecorators-contextualTypes.2.ts, 14, 54))
+>ClassMethodDecoratorContext : Symbol(ClassMethodDecoratorContext, Decl(lib.decorators.d.ts, --, --))
+>This : Symbol(This, Decl(esDecorators-contextualTypes.2.ts, 12, 27))
+>this : Symbol(this, Decl(esDecorators-contextualTypes.2.ts, 15, 52))
+>This : Symbol(This, Decl(esDecorators-contextualTypes.2.ts, 12, 27))
+>args : Symbol(args, Decl(esDecorators-contextualTypes.2.ts, 15, 63))
+>Args : Symbol(Args, Decl(esDecorators-contextualTypes.2.ts, 12, 32))
+>Return : Symbol(Return, Decl(esDecorators-contextualTypes.2.ts, 12, 52))
+
+    ): ((this: This, ...args: Args) => Return) {
+>this : Symbol(this, Decl(esDecorators-contextualTypes.2.ts, 16, 9))
+>This : Symbol(This, Decl(esDecorators-contextualTypes.2.ts, 12, 27))
+>args : Symbol(args, Decl(esDecorators-contextualTypes.2.ts, 16, 20))
+>Args : Symbol(Args, Decl(esDecorators-contextualTypes.2.ts, 12, 32))
+>Return : Symbol(Return, Decl(esDecorators-contextualTypes.2.ts, 12, 52))
+
+        if (bound) {
+>bound : Symbol(bound, Decl(esDecorators-contextualTypes.2.ts, 12, 76))
+
+            context.addInitializer(function () {
+>context.addInitializer : Symbol(ClassMethodDecoratorContext.addInitializer, Decl(lib.decorators.d.ts, --, --))
+>context : Symbol(context, Decl(esDecorators-contextualTypes.2.ts, 14, 54))
+>addInitializer : Symbol(ClassMethodDecoratorContext.addInitializer, Decl(lib.decorators.d.ts, --, --))
+
+                (this as any)[context.name] = (this as any)[context.name].bind(this);
+>this : Symbol(this, Decl(lib.decorators.d.ts, --, --))
+>context.name : Symbol(ClassMethodDecoratorContext.name, Decl(lib.decorators.d.ts, --, --))
+>context : Symbol(context, Decl(esDecorators-contextualTypes.2.ts, 14, 54))
+>name : Symbol(ClassMethodDecoratorContext.name, Decl(lib.decorators.d.ts, --, --))
+>this : Symbol(this, Decl(lib.decorators.d.ts, --, --))
+>context.name : Symbol(ClassMethodDecoratorContext.name, Decl(lib.decorators.d.ts, --, --))
+>context : Symbol(context, Decl(esDecorators-contextualTypes.2.ts, 14, 54))
+>name : Symbol(ClassMethodDecoratorContext.name, Decl(lib.decorators.d.ts, --, --))
+>this : Symbol(this, Decl(lib.decorators.d.ts, --, --))
+
+            });
+        }
+
+        return function (this, ...args) {
+>this : Symbol(this, Decl(esDecorators-contextualTypes.2.ts, 24, 25))
+>args : Symbol(args, Decl(esDecorators-contextualTypes.2.ts, 24, 30))
+
+            console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`);
+>console.log : Symbol(Console.log, Decl(lib.dom.d.ts, --, --))
+>console : Symbol(console, Decl(lib.dom.d.ts, --, --))
+>log : Symbol(Console.log, Decl(lib.dom.d.ts, --, --))
+>source : Symbol(source, Decl(esDecorators-contextualTypes.2.ts, 12, 61))
+>context.name.toString : Symbol(toString, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
+>context.name : Symbol(ClassMethodDecoratorContext.name, Decl(lib.decorators.d.ts, --, --))
+>context : Symbol(context, Decl(esDecorators-contextualTypes.2.ts, 14, 54))
+>name : Symbol(ClassMethodDecoratorContext.name, Decl(lib.decorators.d.ts, --, --))
+>toString : Symbol(toString, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
+
+            return target.apply(this, args);
+>target.apply : Symbol(Function.apply, Decl(lib.es5.d.ts, --, --))
+>target : Symbol(target, Decl(esDecorators-contextualTypes.2.ts, 13, 36))
+>apply : Symbol(Function.apply, Decl(lib.es5.d.ts, --, --))
+>this : Symbol(this, Decl(esDecorators-contextualTypes.2.ts, 24, 25))
+>args : Symbol(args, Decl(esDecorators-contextualTypes.2.ts, 24, 30))
+        }
+    }
+}
diff --git a/tests/baselines/reference/esDecorators-contextualTypes.2.types b/tests/baselines/reference/esDecorators-contextualTypes.2.types
new file mode 100644
index 0000000000000..3a4dbb0c519fa
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-contextualTypes.2.types
@@ -0,0 +1,121 @@
+=== tests/cases/conformance/esDecorators/esDecorators-contextualTypes.2.ts ===
+class C {
+>C : C
+
+    @boundMethodLogger("Yadda", /*bound*/ true)
+>boundMethodLogger("Yadda", /*bound*/ true) : (target: (this: C) => void, context: ClassMethodDecoratorContext<C, (this: C) => void>) => (this: C) => void
+>boundMethodLogger : <This, Args extends any[], Return>(source: string, bound?: boolean) => (target: (this: This, ...args: Args) => Return, context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>) => (this: This, ...args: Args) => Return
+>"Yadda" : "Yadda"
+>true : true
+
+    foo() {
+>foo : () => void
+
+        this.fooHelper();
+>this.fooHelper() : void
+>this.fooHelper : () => void
+>this : this
+>fooHelper : () => void
+    }
+
+    fooHelper() {
+>fooHelper : () => void
+
+        console.log("Behold! The actual method implementation!")
+>console.log("Behold! The actual method implementation!") : void
+>console.log : (...data: any[]) => void
+>console : Console
+>log : (...data: any[]) => void
+>"Behold! The actual method implementation!" : "Behold! The actual method implementation!"
+    }
+};
+export { C };
+>C : typeof C
+
+function boundMethodLogger<This, Args extends any[], Return>(source: string, bound = true) {
+>boundMethodLogger : <This, Args extends any[], Return>(source: string, bound?: boolean) => (target: (this: This, ...args: Args) => Return, context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>) => (this: This, ...args: Args) => Return
+>source : string
+>bound : boolean
+>true : true
+
+    return function loggedDecorator(
+>function loggedDecorator(        target: (this: This, ...args: Args) => Return,        context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>    ): ((this: This, ...args: Args) => Return) {        if (bound) {            context.addInitializer(function () {                (this as any)[context.name] = (this as any)[context.name].bind(this);            });        }        return function (this, ...args) {            console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`);            return target.apply(this, args);        }    } : (target: (this: This, ...args: Args) => Return, context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>) => (this: This, ...args: Args) => Return
+>loggedDecorator : (target: (this: This, ...args: Args) => Return, context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>) => (this: This, ...args: Args) => Return
+
+        target: (this: This, ...args: Args) => Return,
+>target : (this: This, ...args: Args) => Return
+>this : This
+>args : Args
+
+        context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+>context : ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+>this : This
+>args : Args
+
+    ): ((this: This, ...args: Args) => Return) {
+>this : This
+>args : Args
+
+        if (bound) {
+>bound : boolean
+
+            context.addInitializer(function () {
+>context.addInitializer(function () {                (this as any)[context.name] = (this as any)[context.name].bind(this);            }) : void
+>context.addInitializer : (initializer: (this: This) => void) => void
+>context : ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+>addInitializer : (initializer: (this: This) => void) => void
+>function () {                (this as any)[context.name] = (this as any)[context.name].bind(this);            } : (this: This) => void
+
+                (this as any)[context.name] = (this as any)[context.name].bind(this);
+>(this as any)[context.name] = (this as any)[context.name].bind(this) : any
+>(this as any)[context.name] : any
+>(this as any) : any
+>this as any : any
+>this : This
+>context.name : string | symbol
+>context : ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+>name : string | symbol
+>(this as any)[context.name].bind(this) : any
+>(this as any)[context.name].bind : any
+>(this as any)[context.name] : any
+>(this as any) : any
+>this as any : any
+>this : This
+>context.name : string | symbol
+>context : ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+>name : string | symbol
+>bind : any
+>this : This
+
+            });
+        }
+
+        return function (this, ...args) {
+>function (this, ...args) {            console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`);            return target.apply(this, args);        } : (this: This, ...args: Args) => any
+>this : This
+>args : Args
+
+            console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`);
+>console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`) : void
+>console.log : (...data: any[]) => void
+>console : Console
+>log : (...data: any[]) => void
+>`<${source}>: I'm logging stuff from ${context.name.toString()}!` : string
+>source : string
+>context.name.toString() : string
+>context.name.toString : (() => string) | (() => string)
+>context.name : string | symbol
+>context : ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+>name : string | symbol
+>toString : (() => string) | (() => string)
+
+            return target.apply(this, args);
+>target.apply(this, args) : any
+>target.apply : (this: Function, thisArg: any, argArray?: any) => any
+>target : (this: This, ...args: Args) => Return
+>apply : (this: Function, thisArg: any, argArray?: any) => any
+>this : This
+>args : Args
+        }
+    }
+}
diff --git a/tests/baselines/reference/esDecorators-contextualTypes.js b/tests/baselines/reference/esDecorators-contextualTypes.js
new file mode 100644
index 0000000000000..b02a5ea1f1d95
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-contextualTypes.js
@@ -0,0 +1,108 @@
+//// [esDecorators-contextualTypes.ts]
+@((t, c) => { })
+class C {
+    @((t, c) => { })
+    static f() {}
+
+    @((t, c) => { })
+    static #f() {}
+
+    @((t, c) => { })
+    static get x() { return 1; }
+
+    @((t, c) => { })
+    static set x(value) { }
+
+    @((t, c) => { })
+    static get #x() { return 1; }
+
+    @((t, c) => { })
+    static set #x(value) { }
+
+    @((t, c) => { })
+    static accessor y = 1;
+
+    @((t, c) => { })
+    static accessor #y = 1;
+
+    @((t, c) => { })
+    static z = 1;
+
+    @((t, c) => { })
+    static #z = 1;
+
+    @((t, c) => { })
+    g() {}
+
+    @((t, c) => { })
+    #g() {}
+
+    @((t, c) => { })
+    get a() { return 1; }
+
+    @((t, c) => { })
+    set a(value) { }
+
+    @((t, c) => { })
+    get #a() { return 1; }
+
+    @((t, c) => { })
+    set #a(value) { }
+
+    @((t, c) => { })
+    accessor b = 1;
+
+    @((t, c) => { })
+    accessor #b = 1;
+
+    @((t, c) => { })
+    c = 1;
+
+    @((t, c) => { })
+    #c = 1;
+}
+
+//// [esDecorators-contextualTypes.js]
+@((t, c) => { })
+class C {
+    @((t, c) => { })
+    static f() { }
+    @((t, c) => { })
+    static #f() { }
+    @((t, c) => { })
+    static get x() { return 1; }
+    @((t, c) => { })
+    static set x(value) { }
+    @((t, c) => { })
+    static get #x() { return 1; }
+    @((t, c) => { })
+    static set #x(value) { }
+    @((t, c) => { })
+    static accessor y = 1;
+    @((t, c) => { })
+    static accessor #y = 1;
+    @((t, c) => { })
+    static z = 1;
+    @((t, c) => { })
+    static #z = 1;
+    @((t, c) => { })
+    g() { }
+    @((t, c) => { })
+    #g() { }
+    @((t, c) => { })
+    get a() { return 1; }
+    @((t, c) => { })
+    set a(value) { }
+    @((t, c) => { })
+    get #a() { return 1; }
+    @((t, c) => { })
+    set #a(value) { }
+    @((t, c) => { })
+    accessor b = 1;
+    @((t, c) => { })
+    accessor #b = 1;
+    @((t, c) => { })
+    c = 1;
+    @((t, c) => { })
+    #c = 1;
+}
diff --git a/tests/baselines/reference/esDecorators-contextualTypes.symbols b/tests/baselines/reference/esDecorators-contextualTypes.symbols
new file mode 100644
index 0000000000000..15018c6991df2
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-contextualTypes.symbols
@@ -0,0 +1,152 @@
+=== tests/cases/conformance/esDecorators/esDecorators-contextualTypes.ts ===
+@((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 0, 3))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 0, 5))
+
+class C {
+>C : Symbol(C, Decl(esDecorators-contextualTypes.ts, 0, 0))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 2, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 2, 9))
+
+    static f() {}
+>f : Symbol(C.f, Decl(esDecorators-contextualTypes.ts, 1, 9))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 5, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 5, 9))
+
+    static #f() {}
+>#f : Symbol(C.#f, Decl(esDecorators-contextualTypes.ts, 3, 17))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 8, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 8, 9))
+
+    static get x() { return 1; }
+>x : Symbol(C.x, Decl(esDecorators-contextualTypes.ts, 6, 18), Decl(esDecorators-contextualTypes.ts, 9, 32))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 11, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 11, 9))
+
+    static set x(value) { }
+>x : Symbol(C.x, Decl(esDecorators-contextualTypes.ts, 6, 18), Decl(esDecorators-contextualTypes.ts, 9, 32))
+>value : Symbol(value, Decl(esDecorators-contextualTypes.ts, 12, 17))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 14, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 14, 9))
+
+    static get #x() { return 1; }
+>#x : Symbol(C.#x, Decl(esDecorators-contextualTypes.ts, 12, 27), Decl(esDecorators-contextualTypes.ts, 15, 33))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 17, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 17, 9))
+
+    static set #x(value) { }
+>#x : Symbol(C.#x, Decl(esDecorators-contextualTypes.ts, 12, 27), Decl(esDecorators-contextualTypes.ts, 15, 33))
+>value : Symbol(value, Decl(esDecorators-contextualTypes.ts, 18, 18))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 20, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 20, 9))
+
+    static accessor y = 1;
+>y : Symbol(C.y, Decl(esDecorators-contextualTypes.ts, 18, 28))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 23, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 23, 9))
+
+    static accessor #y = 1;
+>#y : Symbol(C.#y, Decl(esDecorators-contextualTypes.ts, 21, 26))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 26, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 26, 9))
+
+    static z = 1;
+>z : Symbol(C.z, Decl(esDecorators-contextualTypes.ts, 24, 27))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 29, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 29, 9))
+
+    static #z = 1;
+>#z : Symbol(C.#z, Decl(esDecorators-contextualTypes.ts, 27, 17))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 32, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 32, 9))
+
+    g() {}
+>g : Symbol(C.g, Decl(esDecorators-contextualTypes.ts, 30, 18))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 35, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 35, 9))
+
+    #g() {}
+>#g : Symbol(C.#g, Decl(esDecorators-contextualTypes.ts, 33, 10))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 38, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 38, 9))
+
+    get a() { return 1; }
+>a : Symbol(C.a, Decl(esDecorators-contextualTypes.ts, 36, 11), Decl(esDecorators-contextualTypes.ts, 39, 25))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 41, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 41, 9))
+
+    set a(value) { }
+>a : Symbol(C.a, Decl(esDecorators-contextualTypes.ts, 36, 11), Decl(esDecorators-contextualTypes.ts, 39, 25))
+>value : Symbol(value, Decl(esDecorators-contextualTypes.ts, 42, 10))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 44, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 44, 9))
+
+    get #a() { return 1; }
+>#a : Symbol(C.#a, Decl(esDecorators-contextualTypes.ts, 42, 20), Decl(esDecorators-contextualTypes.ts, 45, 26))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 47, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 47, 9))
+
+    set #a(value) { }
+>#a : Symbol(C.#a, Decl(esDecorators-contextualTypes.ts, 42, 20), Decl(esDecorators-contextualTypes.ts, 45, 26))
+>value : Symbol(value, Decl(esDecorators-contextualTypes.ts, 48, 11))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 50, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 50, 9))
+
+    accessor b = 1;
+>b : Symbol(C.b, Decl(esDecorators-contextualTypes.ts, 48, 21))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 53, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 53, 9))
+
+    accessor #b = 1;
+>#b : Symbol(C.#b, Decl(esDecorators-contextualTypes.ts, 51, 19))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 56, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 56, 9))
+
+    c = 1;
+>c : Symbol(C.c, Decl(esDecorators-contextualTypes.ts, 54, 20))
+
+    @((t, c) => { })
+>t : Symbol(t, Decl(esDecorators-contextualTypes.ts, 59, 7))
+>c : Symbol(c, Decl(esDecorators-contextualTypes.ts, 59, 9))
+
+    #c = 1;
+>#c : Symbol(C.#c, Decl(esDecorators-contextualTypes.ts, 57, 10))
+}
diff --git a/tests/baselines/reference/esDecorators-contextualTypes.types b/tests/baselines/reference/esDecorators-contextualTypes.types
new file mode 100644
index 0000000000000..0e2539de5e446
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-contextualTypes.types
@@ -0,0 +1,206 @@
+=== tests/cases/conformance/esDecorators/esDecorators-contextualTypes.ts ===
+@((t, c) => { })
+>((t, c) => { }) : (t: typeof C, c: ClassDecoratorContext<typeof C>) => void
+>(t, c) => { } : (t: typeof C, c: ClassDecoratorContext<typeof C>) => void
+>t : typeof C
+>c : ClassDecoratorContext<typeof C>
+
+class C {
+>C : C
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => void, c: ClassMethodDecoratorContext<typeof C, () => void> & { name: "f"; private: false; static: true; }) => void
+>(t, c) => { } : (t: () => void, c: ClassMethodDecoratorContext<typeof C, () => void> & { name: "f"; private: false; static: true; }) => void
+>t : () => void
+>c : ClassMethodDecoratorContext<typeof C, () => void> & { name: "f"; private: false; static: true; }
+
+    static f() {}
+>f : () => void
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => void, c: ClassMethodDecoratorContext<typeof C, () => void> & { name: "#f"; private: true; static: true; }) => void
+>(t, c) => { } : (t: () => void, c: ClassMethodDecoratorContext<typeof C, () => void> & { name: "#f"; private: true; static: true; }) => void
+>t : () => void
+>c : ClassMethodDecoratorContext<typeof C, () => void> & { name: "#f"; private: true; static: true; }
+
+    static #f() {}
+>#f : () => void
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => number, c: ClassGetterDecoratorContext<typeof C, number> & { name: "x"; private: false; static: true; }) => void
+>(t, c) => { } : (t: () => number, c: ClassGetterDecoratorContext<typeof C, number> & { name: "x"; private: false; static: true; }) => void
+>t : () => number
+>c : ClassGetterDecoratorContext<typeof C, number> & { name: "x"; private: false; static: true; }
+
+    static get x() { return 1; }
+>x : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: (value: number) => void, c: ClassSetterDecoratorContext<typeof C, number> & { name: "x"; private: false; static: true; }) => void
+>(t, c) => { } : (t: (value: number) => void, c: ClassSetterDecoratorContext<typeof C, number> & { name: "x"; private: false; static: true; }) => void
+>t : (value: number) => void
+>c : ClassSetterDecoratorContext<typeof C, number> & { name: "x"; private: false; static: true; }
+
+    static set x(value) { }
+>x : number
+>value : number
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => number, c: ClassGetterDecoratorContext<typeof C, number> & { name: "#x"; private: true; static: true; }) => void
+>(t, c) => { } : (t: () => number, c: ClassGetterDecoratorContext<typeof C, number> & { name: "#x"; private: true; static: true; }) => void
+>t : () => number
+>c : ClassGetterDecoratorContext<typeof C, number> & { name: "#x"; private: true; static: true; }
+
+    static get #x() { return 1; }
+>#x : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: (value: number) => void, c: ClassSetterDecoratorContext<typeof C, number> & { name: "#x"; private: true; static: true; }) => void
+>(t, c) => { } : (t: (value: number) => void, c: ClassSetterDecoratorContext<typeof C, number> & { name: "#x"; private: true; static: true; }) => void
+>t : (value: number) => void
+>c : ClassSetterDecoratorContext<typeof C, number> & { name: "#x"; private: true; static: true; }
+
+    static set #x(value) { }
+>#x : number
+>value : number
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: ClassAccessorDecoratorTarget<typeof C, number>, c: ClassAccessorDecoratorContext<typeof C, number> & { name: "y"; private: false; static: true; }) => void
+>(t, c) => { } : (t: ClassAccessorDecoratorTarget<typeof C, number>, c: ClassAccessorDecoratorContext<typeof C, number> & { name: "y"; private: false; static: true; }) => void
+>t : ClassAccessorDecoratorTarget<typeof C, number>
+>c : ClassAccessorDecoratorContext<typeof C, number> & { name: "y"; private: false; static: true; }
+
+    static accessor y = 1;
+>y : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: ClassAccessorDecoratorTarget<typeof C, number>, c: ClassAccessorDecoratorContext<typeof C, number> & { name: "#y"; private: true; static: true; }) => void
+>(t, c) => { } : (t: ClassAccessorDecoratorTarget<typeof C, number>, c: ClassAccessorDecoratorContext<typeof C, number> & { name: "#y"; private: true; static: true; }) => void
+>t : ClassAccessorDecoratorTarget<typeof C, number>
+>c : ClassAccessorDecoratorContext<typeof C, number> & { name: "#y"; private: true; static: true; }
+
+    static accessor #y = 1;
+>#y : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: undefined, c: ClassFieldDecoratorContext<typeof C, number> & { name: "z"; private: false; static: true; }) => void
+>(t, c) => { } : (t: undefined, c: ClassFieldDecoratorContext<typeof C, number> & { name: "z"; private: false; static: true; }) => void
+>t : undefined
+>c : ClassFieldDecoratorContext<typeof C, number> & { name: "z"; private: false; static: true; }
+
+    static z = 1;
+>z : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: undefined, c: ClassFieldDecoratorContext<typeof C, number> & { name: "#z"; private: true; static: true; }) => void
+>(t, c) => { } : (t: undefined, c: ClassFieldDecoratorContext<typeof C, number> & { name: "#z"; private: true; static: true; }) => void
+>t : undefined
+>c : ClassFieldDecoratorContext<typeof C, number> & { name: "#z"; private: true; static: true; }
+
+    static #z = 1;
+>#z : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => void, c: ClassMethodDecoratorContext<C, () => void> & { name: "g"; private: false; static: false; }) => void
+>(t, c) => { } : (t: () => void, c: ClassMethodDecoratorContext<C, () => void> & { name: "g"; private: false; static: false; }) => void
+>t : () => void
+>c : ClassMethodDecoratorContext<C, () => void> & { name: "g"; private: false; static: false; }
+
+    g() {}
+>g : () => void
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => void, c: ClassMethodDecoratorContext<C, () => void> & { name: "#g"; private: true; static: false; }) => void
+>(t, c) => { } : (t: () => void, c: ClassMethodDecoratorContext<C, () => void> & { name: "#g"; private: true; static: false; }) => void
+>t : () => void
+>c : ClassMethodDecoratorContext<C, () => void> & { name: "#g"; private: true; static: false; }
+
+    #g() {}
+>#g : () => void
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => number, c: ClassGetterDecoratorContext<C, number> & { name: "a"; private: false; static: false; }) => void
+>(t, c) => { } : (t: () => number, c: ClassGetterDecoratorContext<C, number> & { name: "a"; private: false; static: false; }) => void
+>t : () => number
+>c : ClassGetterDecoratorContext<C, number> & { name: "a"; private: false; static: false; }
+
+    get a() { return 1; }
+>a : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: (value: number) => void, c: ClassSetterDecoratorContext<C, number> & { name: "a"; private: false; static: false; }) => void
+>(t, c) => { } : (t: (value: number) => void, c: ClassSetterDecoratorContext<C, number> & { name: "a"; private: false; static: false; }) => void
+>t : (value: number) => void
+>c : ClassSetterDecoratorContext<C, number> & { name: "a"; private: false; static: false; }
+
+    set a(value) { }
+>a : number
+>value : number
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: () => number, c: ClassGetterDecoratorContext<C, number> & { name: "#a"; private: true; static: false; }) => void
+>(t, c) => { } : (t: () => number, c: ClassGetterDecoratorContext<C, number> & { name: "#a"; private: true; static: false; }) => void
+>t : () => number
+>c : ClassGetterDecoratorContext<C, number> & { name: "#a"; private: true; static: false; }
+
+    get #a() { return 1; }
+>#a : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: (value: number) => void, c: ClassSetterDecoratorContext<C, number> & { name: "#a"; private: true; static: false; }) => void
+>(t, c) => { } : (t: (value: number) => void, c: ClassSetterDecoratorContext<C, number> & { name: "#a"; private: true; static: false; }) => void
+>t : (value: number) => void
+>c : ClassSetterDecoratorContext<C, number> & { name: "#a"; private: true; static: false; }
+
+    set #a(value) { }
+>#a : number
+>value : number
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: ClassAccessorDecoratorTarget<C, number>, c: ClassAccessorDecoratorContext<C, number> & { name: "b"; private: false; static: false; }) => void
+>(t, c) => { } : (t: ClassAccessorDecoratorTarget<C, number>, c: ClassAccessorDecoratorContext<C, number> & { name: "b"; private: false; static: false; }) => void
+>t : ClassAccessorDecoratorTarget<C, number>
+>c : ClassAccessorDecoratorContext<C, number> & { name: "b"; private: false; static: false; }
+
+    accessor b = 1;
+>b : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: ClassAccessorDecoratorTarget<C, number>, c: ClassAccessorDecoratorContext<C, number> & { name: "#b"; private: true; static: false; }) => void
+>(t, c) => { } : (t: ClassAccessorDecoratorTarget<C, number>, c: ClassAccessorDecoratorContext<C, number> & { name: "#b"; private: true; static: false; }) => void
+>t : ClassAccessorDecoratorTarget<C, number>
+>c : ClassAccessorDecoratorContext<C, number> & { name: "#b"; private: true; static: false; }
+
+    accessor #b = 1;
+>#b : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: undefined, c: ClassFieldDecoratorContext<C, number> & { name: "c"; private: false; static: false; }) => void
+>(t, c) => { } : (t: undefined, c: ClassFieldDecoratorContext<C, number> & { name: "c"; private: false; static: false; }) => void
+>t : undefined
+>c : ClassFieldDecoratorContext<C, number> & { name: "c"; private: false; static: false; }
+
+    c = 1;
+>c : number
+>1 : 1
+
+    @((t, c) => { })
+>((t, c) => { }) : (t: undefined, c: ClassFieldDecoratorContext<C, number> & { name: "#c"; private: true; static: false; }) => void
+>(t, c) => { } : (t: undefined, c: ClassFieldDecoratorContext<C, number> & { name: "#c"; private: true; static: false; }) => void
+>t : undefined
+>c : ClassFieldDecoratorContext<C, number> & { name: "#c"; private: true; static: false; }
+
+    #c = 1;
+>#c : number
+>1 : 1
+}
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2015).errors.txt b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2015).errors.txt
new file mode 100644
index 0000000000000..ca3cef9902828
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2015).errors.txt
@@ -0,0 +1,51 @@
+error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+
+
+!!! error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+==== tests/cases/conformance/esDecorators/esDecorators-emitDecoratorMetadata.ts (0 errors) ====
+    declare let dec: any;
+    
+    @dec
+    class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    }
+    
+    (@dec class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2015).js b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2015).js
new file mode 100644
index 0000000000000..63d24ad0c82da
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2015).js
@@ -0,0 +1,146 @@
+//// [esDecorators-emitDecoratorMetadata.ts]
+declare let dec: any;
+
+@dec
+class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+}
+
+(@dec class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+});
+
+//// [esDecorators-emitDecoratorMetadata.js]
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_method_decorators;
+    let _static_set_x_decorators;
+    let _static_y_decorators;
+    let _static_y_initializers = [];
+    let _method_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    var C = _classThis = class {
+        constructor(x) {
+            this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        }
+        method(x) { }
+        set x(x) { }
+        static method(x) { }
+        static set x(x) { }
+    };
+    __setFunctionName(_classThis, "C");
+    (() => {
+        _method_decorators = [dec];
+        _set_x_decorators = [dec];
+        _y_decorators = [dec];
+        _static_method_decorators = [dec];
+        _static_set_x_decorators = [dec];
+        _static_y_decorators = [dec];
+        __esDecorate(_classThis, null, _static_method_decorators, { kind: "method", name: "method", static: true, private: false }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, null, _static_set_x_decorators, { kind: "setter", name: "x", static: true, private: false }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(null, null, _static_y_decorators, { kind: "field", name: "y", static: true, private: false }, _static_y_initializers, _staticExtraInitializers);
+        __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _staticExtraInitializers);
+    })();
+    _classThis.y = __runInitializers(_classThis, _static_y_initializers, void 0);
+    (() => {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+})();
+((() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _staticExtraInitializers_1 = [];
+    let _instanceExtraInitializers_1 = [];
+    let _static_method_decorators;
+    let _static_set_x_decorators;
+    let _static_y_decorators;
+    let _static_y_initializers = [];
+    let _method_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    var C = (_classThis_1 = class {
+            constructor(x) {
+                this.y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+            }
+            method(x) { }
+            set x(x) { }
+            static method(x) { }
+            static set x(x) { }
+        },
+        __setFunctionName(_classThis_1, "C"),
+        (() => {
+            _method_decorators = [dec];
+            _set_x_decorators = [dec];
+            _y_decorators = [dec];
+            _static_method_decorators = [dec];
+            _static_set_x_decorators = [dec];
+            _static_y_decorators = [dec];
+            __esDecorate(_classThis_1, null, _static_method_decorators, { kind: "method", name: "method", static: true, private: false }, null, _staticExtraInitializers_1);
+            __esDecorate(_classThis_1, null, _static_set_x_decorators, { kind: "setter", name: "x", static: true, private: false }, null, _staticExtraInitializers_1);
+            __esDecorate(_classThis_1, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers_1);
+            __esDecorate(_classThis_1, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers_1);
+            __esDecorate(null, null, _static_y_decorators, { kind: "field", name: "y", static: true, private: false }, _static_y_initializers, _staticExtraInitializers_1);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+            __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+            C = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _staticExtraInitializers_1);
+        })(),
+        _classThis_1.y = __runInitializers(_classThis_1, _static_y_initializers, void 0),
+        (() => {
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        })(),
+        _classThis_1);
+    return C = _classThis_1;
+})());
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2022).errors.txt b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2022).errors.txt
new file mode 100644
index 0000000000000..ca3cef9902828
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2022).errors.txt
@@ -0,0 +1,51 @@
+error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+
+
+!!! error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+==== tests/cases/conformance/esDecorators/esDecorators-emitDecoratorMetadata.ts (0 errors) ====
+    declare let dec: any;
+    
+    @dec
+    class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    }
+    
+    (@dec class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2022).js b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2022).js
new file mode 100644
index 0000000000000..4b6c1e5cb13b7
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es2022).js
@@ -0,0 +1,141 @@
+//// [esDecorators-emitDecoratorMetadata.ts]
+declare let dec: any;
+
+@dec
+class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+}
+
+(@dec class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+});
+
+//// [esDecorators-emitDecoratorMetadata.js]
+let C = (() => {
+    let _classDecorators = [dec];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    let _staticExtraInitializers = [];
+    let _instanceExtraInitializers = [];
+    let _static_method_decorators;
+    let _static_set_x_decorators;
+    let _static_y_decorators;
+    let _static_y_initializers = [];
+    let _method_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    var C = class {
+        static {
+            _method_decorators = [dec];
+            _set_x_decorators = [dec];
+            _y_decorators = [dec];
+            _static_method_decorators = [dec];
+            _static_set_x_decorators = [dec];
+            _static_y_decorators = [dec];
+            __esDecorate(this, null, _static_method_decorators, { kind: "method", name: "method", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _static_set_x_decorators, { kind: "setter", name: "x", static: true, private: false }, null, _staticExtraInitializers);
+            __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+            __esDecorate(null, null, _static_y_decorators, { kind: "field", name: "y", static: true, private: false }, _static_y_initializers, _staticExtraInitializers);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+            __esDecorate(null, _classDescriptor = { value: this }, _classDecorators, { kind: "class", name: this.name }, null, _classExtraInitializers);
+            C = _classThis = _classDescriptor.value;
+            __runInitializers(_classThis, _staticExtraInitializers);
+        }
+        constructor(x) { }
+        method(x) { }
+        set x(x) { }
+        y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        static method(x) { }
+        static set x(x) { }
+        static y = __runInitializers(_classThis, _static_y_initializers, void 0);
+        static {
+            __runInitializers(_classThis, _classExtraInitializers);
+        }
+    };
+    return C = _classThis;
+})();
+((() => {
+    let _classDecorators_1 = [dec];
+    let _classDescriptor_1;
+    let _classExtraInitializers_1 = [];
+    let _classThis_1;
+    let _staticExtraInitializers_1 = [];
+    let _instanceExtraInitializers_1 = [];
+    let _static_method_decorators;
+    let _static_set_x_decorators;
+    let _static_y_decorators;
+    let _static_y_initializers = [];
+    let _method_decorators;
+    let _set_x_decorators;
+    let _y_decorators;
+    let _y_initializers = [];
+    var C = class {
+        static {
+            _method_decorators = [dec];
+            _set_x_decorators = [dec];
+            _y_decorators = [dec];
+            _static_method_decorators = [dec];
+            _static_set_x_decorators = [dec];
+            _static_y_decorators = [dec];
+            __esDecorate(this, null, _static_method_decorators, { kind: "method", name: "method", static: true, private: false }, null, _staticExtraInitializers_1);
+            __esDecorate(this, null, _static_set_x_decorators, { kind: "setter", name: "x", static: true, private: false }, null, _staticExtraInitializers_1);
+            __esDecorate(this, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers_1);
+            __esDecorate(this, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers_1);
+            __esDecorate(null, null, _static_y_decorators, { kind: "field", name: "y", static: true, private: false }, _static_y_initializers, _staticExtraInitializers_1);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+            __esDecorate(null, _classDescriptor_1 = { value: this }, _classDecorators_1, { kind: "class", name: this.name }, null, _classExtraInitializers_1);
+            C = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _staticExtraInitializers_1);
+        }
+        constructor(x) { }
+        method(x) { }
+        set x(x) { }
+        y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+        static method(x) { }
+        static set x(x) { }
+        static y = __runInitializers(_classThis_1, _static_y_initializers, void 0);
+        static {
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        }
+    };
+    return C = _classThis_1;
+})());
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es5).errors.txt b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es5).errors.txt
new file mode 100644
index 0000000000000..ca3cef9902828
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es5).errors.txt
@@ -0,0 +1,51 @@
+error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+
+
+!!! error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+==== tests/cases/conformance/esDecorators/esDecorators-emitDecoratorMetadata.ts (0 errors) ====
+    declare let dec: any;
+    
+    @dec
+    class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    }
+    
+    (@dec class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es5).js b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es5).js
new file mode 100644
index 0000000000000..d6f8ccddcc142
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=es5).js
@@ -0,0 +1,165 @@
+//// [esDecorators-emitDecoratorMetadata.ts]
+declare let dec: any;
+
+@dec
+class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+}
+
+(@dec class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+});
+
+//// [esDecorators-emitDecoratorMetadata.js]
+var _this = this;
+var C = function () {
+    var _classDecorators = [dec];
+    var _classDescriptor;
+    var _classExtraInitializers = [];
+    var _classThis;
+    var _staticExtraInitializers = [];
+    var _instanceExtraInitializers = [];
+    var _static_method_decorators;
+    var _static_set_x_decorators;
+    var _static_y_decorators;
+    var _static_y_initializers = [];
+    var _method_decorators;
+    var _set_x_decorators;
+    var _y_decorators;
+    var _y_initializers = [];
+    var C = _classThis = /** @class */ (function () {
+        function C_1(x) {
+            this.y = (__runInitializers(this, _instanceExtraInitializers), __runInitializers(this, _y_initializers, void 0));
+        }
+        C_1.prototype.method = function (x) { };
+        Object.defineProperty(C_1.prototype, "x", {
+            set: function (x) { },
+            enumerable: false,
+            configurable: true
+        });
+        C_1.method = function (x) { };
+        Object.defineProperty(C_1, "x", {
+            set: function (x) { },
+            enumerable: false,
+            configurable: true
+        });
+        return C_1;
+    }());
+    __setFunctionName(_classThis, "C");
+    (function () {
+        _method_decorators = [dec];
+        _set_x_decorators = [dec];
+        _y_decorators = [dec];
+        _static_method_decorators = [dec];
+        _static_set_x_decorators = [dec];
+        _static_y_decorators = [dec];
+        __esDecorate(_classThis, null, _static_method_decorators, { kind: "method", name: "method", static: true, private: false }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, null, _static_set_x_decorators, { kind: "setter", name: "x", static: true, private: false }, null, _staticExtraInitializers);
+        __esDecorate(_classThis, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(_classThis, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers);
+        __esDecorate(null, null, _static_y_decorators, { kind: "field", name: "y", static: true, private: false }, _static_y_initializers, _staticExtraInitializers);
+        __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers);
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        C = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _staticExtraInitializers);
+    })();
+    _classThis.y = __runInitializers(_classThis, _static_y_initializers, void 0);
+    (function () {
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return C = _classThis;
+}();
+((function () {
+    var _classDecorators_1 = [dec];
+    var _classDescriptor_1;
+    var _classExtraInitializers_1 = [];
+    var _classThis_1;
+    var _staticExtraInitializers_1 = [];
+    var _instanceExtraInitializers_1 = [];
+    var _static_method_decorators;
+    var _static_set_x_decorators;
+    var _static_y_decorators;
+    var _static_y_initializers = [];
+    var _method_decorators;
+    var _set_x_decorators;
+    var _y_decorators;
+    var _y_initializers = [];
+    var C = (_classThis_1 = /** @class */ (function () {
+            function class_1(x) {
+                this.y = (__runInitializers(this, _instanceExtraInitializers_1), __runInitializers(this, _y_initializers, void 0));
+            }
+            class_1.prototype.method = function (x) { };
+            Object.defineProperty(class_1.prototype, "x", {
+                set: function (x) { },
+                enumerable: false,
+                configurable: true
+            });
+            class_1.method = function (x) { };
+            Object.defineProperty(class_1, "x", {
+                set: function (x) { },
+                enumerable: false,
+                configurable: true
+            });
+            return class_1;
+        }()),
+        __setFunctionName(_classThis_1, "C"),
+        (function () {
+            _method_decorators = [dec];
+            _set_x_decorators = [dec];
+            _y_decorators = [dec];
+            _static_method_decorators = [dec];
+            _static_set_x_decorators = [dec];
+            _static_y_decorators = [dec];
+            __esDecorate(_classThis_1, null, _static_method_decorators, { kind: "method", name: "method", static: true, private: false }, null, _staticExtraInitializers_1);
+            __esDecorate(_classThis_1, null, _static_set_x_decorators, { kind: "setter", name: "x", static: true, private: false }, null, _staticExtraInitializers_1);
+            __esDecorate(_classThis_1, null, _method_decorators, { kind: "method", name: "method", static: false, private: false }, null, _instanceExtraInitializers_1);
+            __esDecorate(_classThis_1, null, _set_x_decorators, { kind: "setter", name: "x", static: false, private: false }, null, _instanceExtraInitializers_1);
+            __esDecorate(null, null, _static_y_decorators, { kind: "field", name: "y", static: true, private: false }, _static_y_initializers, _staticExtraInitializers_1);
+            __esDecorate(null, null, _y_decorators, { kind: "field", name: "y", static: false, private: false }, _y_initializers, _instanceExtraInitializers_1);
+            __esDecorate(null, _classDescriptor_1 = { value: _classThis_1 }, _classDecorators_1, { kind: "class", name: _classThis_1.name }, null, _classExtraInitializers_1);
+            C = _classThis_1 = _classDescriptor_1.value;
+            __runInitializers(_classThis_1, _staticExtraInitializers_1);
+        })(),
+        _classThis_1.y = __runInitializers(_classThis_1, _static_y_initializers, void 0),
+        (function () {
+            __runInitializers(_classThis_1, _classExtraInitializers_1);
+        })(),
+        _classThis_1);
+    return C = _classThis_1;
+})());
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=esnext).errors.txt b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=esnext).errors.txt
new file mode 100644
index 0000000000000..ca3cef9902828
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=esnext).errors.txt
@@ -0,0 +1,51 @@
+error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+
+
+!!! error TS5052: Option 'emitDecoratorMetadata' cannot be specified without specifying option 'experimentalDecorators'.
+==== tests/cases/conformance/esDecorators/esDecorators-emitDecoratorMetadata.ts (0 errors) ====
+    declare let dec: any;
+    
+    @dec
+    class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    }
+    
+    (@dec class C {
+        constructor(x: number) {}
+    
+        @dec
+        method(x: number) {}
+    
+        @dec
+        set x(x: number) {}
+    
+        @dec
+        y: number;
+    
+        @dec
+        static method(x: number) {}
+    
+        @dec
+        static set x(x: number) {}
+    
+        @dec
+        static y: number;
+    });
\ No newline at end of file
diff --git a/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=esnext).js b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=esnext).js
new file mode 100644
index 0000000000000..f8bed6444b6c0
--- /dev/null
+++ b/tests/baselines/reference/esDecorators-emitDecoratorMetadata(target=esnext).js
@@ -0,0 +1,82 @@
+//// [esDecorators-emitDecoratorMetadata.ts]
+declare let dec: any;
+
+@dec
+class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+}
+
+(@dec class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+});
+
+//// [esDecorators-emitDecoratorMetadata.js]
+@dec
+class C {
+    constructor(x) { }
+    @dec
+    method(x) { }
+    @dec
+    set x(x) { }
+    @dec
+    y;
+    @dec
+    static method(x) { }
+    @dec
+    static set x(x) { }
+    @dec
+    static y;
+}
+(
+@dec
+class C {
+    constructor(x) { }
+    @dec
+    method(x) { }
+    @dec
+    set x(x) { }
+    @dec
+    y;
+    @dec
+    static method(x) { }
+    @dec
+    static set x(x) { }
+    @dec
+    static y;
+});
diff --git a/tests/baselines/reference/esnextmodulekindWithES5Target.js b/tests/baselines/reference/esnextmodulekindWithES5Target.js
index 061dd3e4050d9..7f5b300a7503b 100644
--- a/tests/baselines/reference/esnextmodulekindWithES5Target.js
+++ b/tests/baselines/reference/esnextmodulekindWithES5Target.js
@@ -26,7 +26,7 @@ var __decorate = (this && this.__decorate) || function (decorators, target, key,
     else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
     return c > 3 && r && Object.defineProperty(target, key, r), r;
 };
-var C = /** @class */ (function () {
+export var C = /** @class */ (function () {
     function C() {
         this.p = 1;
     }
@@ -34,9 +34,8 @@ var C = /** @class */ (function () {
     C.s = 0;
     return C;
 }());
-export { C };
 export { C as C2 };
-var D = /** @class */ (function () {
+export var D = /** @class */ (function () {
     function D() {
         this.p = 1;
     }
@@ -47,7 +46,6 @@ var D = /** @class */ (function () {
     ], D);
     return D;
 }());
-export { D };
 export { D as D2 };
 var E = /** @class */ (function () {
     function E() {
diff --git a/tests/baselines/reference/exportDefaultClassWithStaticPropertyAssignmentsInES6.js b/tests/baselines/reference/exportDefaultClassWithStaticPropertyAssignmentsInES6.js
index 3acb89b8696d7..4aa354ee727e7 100644
--- a/tests/baselines/reference/exportDefaultClassWithStaticPropertyAssignmentsInES6.js
+++ b/tests/baselines/reference/exportDefaultClassWithStaticPropertyAssignmentsInES6.js
@@ -4,6 +4,7 @@ export default class {
 }
 
 //// [exportDefaultClassWithStaticPropertyAssignmentsInES6.js]
-export default class default_1 {
+class default_1 {
 }
 default_1.z = "Foo";
+export default default_1;
diff --git a/tests/baselines/reference/externModule.errors.txt b/tests/baselines/reference/externModule.errors.txt
index 2edbcc5ad6078..c3e3352d75be4 100644
--- a/tests/baselines/reference/externModule.errors.txt
+++ b/tests/baselines/reference/externModule.errors.txt
@@ -66,20 +66,20 @@ tests/cases/compiler/externModule.ts(37,3): error TS2552: Cannot find name 'XDat
     var d=new XDate();
               ~~~~~
 !!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
-!!! related TS2728 /.ts/lib.es5.d.ts:938:13: 'Date' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:941:13: 'Date' is declared here.
     d.getDay();
     d=new XDate(1978,2);
           ~~~~~
 !!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
-!!! related TS2728 /.ts/lib.es5.d.ts:938:13: 'Date' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:941:13: 'Date' is declared here.
     d.getXDate();
     var n=XDate.parse("3/2/2004");
           ~~~~~
 !!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
-!!! related TS2728 /.ts/lib.es5.d.ts:938:13: 'Date' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:941:13: 'Date' is declared here.
     n=XDate.UTC(1964,2,1);
       ~~~~~
 !!! error TS2552: Cannot find name 'XDate'. Did you mean 'Date'?
-!!! related TS2728 /.ts/lib.es5.d.ts:938:13: 'Date' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:941:13: 'Date' is declared here.
     
     
\ No newline at end of file
diff --git a/tests/baselines/reference/generatorTypeCheck39.errors.txt b/tests/baselines/reference/generatorTypeCheck39.errors.txt
index 740c363436848..ab50f4c87438f 100644
--- a/tests/baselines/reference/generatorTypeCheck39.errors.txt
+++ b/tests/baselines/reference/generatorTypeCheck39.errors.txt
@@ -1,16 +1,13 @@
-tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts(6,11): error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
 tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts(7,13): error TS1163: A 'yield' expression is only allowed in a generator body.
 
 
-==== tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts (2 errors) ====
+==== tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts (1 errors) ====
     function decorator(x: any) {
         return y => { };
     }
     function* g() {
         @decorator(yield 0)
         class C {
-              ~
-!!! error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
             x = yield 0;
                 ~~~~~
 !!! error TS1163: A 'yield' expression is only allowed in a generator body.
diff --git a/tests/baselines/reference/generatorTypeCheck59.errors.txt b/tests/baselines/reference/generatorTypeCheck59.errors.txt
deleted file mode 100644
index 87a640112d091..0000000000000
--- a/tests/baselines/reference/generatorTypeCheck59.errors.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck59.ts(4,9): error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
-
-
-==== tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck59.ts (1 errors) ====
-    function* g() {
-        class C {
-            @(yield "")
-            m() { }
-            ~
-!!! error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
-        };
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/generatorTypeCheck61.errors.txt b/tests/baselines/reference/generatorTypeCheck61.errors.txt
deleted file mode 100644
index e6eda81186a3d..0000000000000
--- a/tests/baselines/reference/generatorTypeCheck61.errors.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck61.ts(3,11): error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
-
-
-==== tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck61.ts (1 errors) ====
-    function * g() {
-        @(yield 0)
-        class C {};
-              ~
-!!! error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
-    }
\ No newline at end of file
diff --git a/tests/baselines/reference/generatorTypeCheck61.types b/tests/baselines/reference/generatorTypeCheck61.types
index d78d7439d47e5..0c8c4ee850367 100644
--- a/tests/baselines/reference/generatorTypeCheck61.types
+++ b/tests/baselines/reference/generatorTypeCheck61.types
@@ -1,6 +1,6 @@
 === tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck61.ts ===
 function * g() {
->g : () => Generator<number, void, unknown>
+>g : () => Generator<number, void, (target: typeof C) => void | typeof C>
 
     @(yield 0)
 >(yield 0) : any
diff --git a/tests/baselines/reference/importImportOnlyModule.js b/tests/baselines/reference/importImportOnlyModule.js
index b770810648b5b..d60eaa7206aa6 100644
--- a/tests/baselines/reference/importImportOnlyModule.js
+++ b/tests/baselines/reference/importImportOnlyModule.js
@@ -20,14 +20,13 @@ define(["require", "exports"], function (require, exports) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.C1 = void 0;
-    var C1 = /** @class */ (function () {
+    var C1 = exports.C1 = /** @class */ (function () {
         function C1() {
             this.m1 = 42;
         }
         C1.s1 = true;
         return C1;
     }());
-    exports.C1 = C1;
 });
 //// [foo_1.js]
 define(["require", "exports"], function (require, exports) {
diff --git a/tests/baselines/reference/invalidTypeOfTarget.errors.txt b/tests/baselines/reference/invalidTypeOfTarget.errors.txt
index db87a34095213..0bcd66b4dd6f0 100644
--- a/tests/baselines/reference/invalidTypeOfTarget.errors.txt
+++ b/tests/baselines/reference/invalidTypeOfTarget.errors.txt
@@ -36,7 +36,7 @@ tests/cases/conformance/types/specifyingTypes/typeQueries/invalidTypeOfTarget.ts
     var x7: typeof function f() { };
                    ~~~~~~~~
 !!! error TS2552: Cannot find name 'function'. Did you mean 'Function'?
-!!! related TS2728 /.ts/lib.es5.d.ts:318:13: 'Function' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:321:13: 'Function' is declared here.
                             ~
 !!! error TS1005: ',' expected.
                              ~
diff --git a/tests/baselines/reference/jsDeclarationsClasses.js b/tests/baselines/reference/jsDeclarationsClasses.js
index f1807e37f4c3d..f8982d3b554b0 100644
--- a/tests/baselines/reference/jsDeclarationsClasses.js
+++ b/tests/baselines/reference/jsDeclarationsClasses.js
@@ -219,14 +219,13 @@ var A = /** @class */ (function () {
     return A;
 }());
 exports.A = A;
-var B = /** @class */ (function () {
+var B = exports.B = /** @class */ (function () {
     function B() {
     }
     B.cat = "cat";
     return B;
 }());
-exports.B = B;
-var C = /** @class */ (function () {
+var C = exports.C = /** @class */ (function () {
     function C() {
     }
     C.Cls = /** @class */ (function () {
@@ -236,7 +235,6 @@ var C = /** @class */ (function () {
     }());
     return C;
 }());
-exports.C = C;
 var D = /** @class */ (function () {
     /**
      * @param {number} a
@@ -250,7 +248,7 @@ exports.D = D;
 /**
  * @template T,U
  */
-var E = /** @class */ (function () {
+var E = exports.E = /** @class */ (function () {
     /**
      * @param {T} a
      * @param {U} b
@@ -317,7 +315,6 @@ var E = /** @class */ (function () {
     E.staticInitializedField = 12;
     return E;
 }());
-exports.E = E;
 /**
  * @template T,U
  */
diff --git a/tests/baselines/reference/jsDeclarationsComputedNames.js b/tests/baselines/reference/jsDeclarationsComputedNames.js
index 127b4604583da..8b21f98c0b84d 100644
--- a/tests/baselines/reference/jsDeclarationsComputedNames.js
+++ b/tests/baselines/reference/jsDeclarationsComputedNames.js
@@ -50,7 +50,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 exports.MyClass = void 0;
 var TopLevelSym = Symbol();
 var InnerSym = Symbol();
-var MyClass = /** @class */ (function () {
+var MyClass = exports.MyClass = /** @class */ (function () {
     /**
      * @param {typeof TopLevelSym | typeof InnerSym} _p
      */
@@ -64,7 +64,6 @@ var MyClass = /** @class */ (function () {
     MyClass[_a] = 12;
     return MyClass;
 }());
-exports.MyClass = MyClass;
 
 
 //// [index.d.ts]
diff --git a/tests/baselines/reference/legacyDecorators-contextualTypes.js b/tests/baselines/reference/legacyDecorators-contextualTypes.js
new file mode 100644
index 0000000000000..c93d9bf15469e
--- /dev/null
+++ b/tests/baselines/reference/legacyDecorators-contextualTypes.js
@@ -0,0 +1,94 @@
+//// [legacyDecorators-contextualTypes.ts]
+@((t) => { })
+class C {
+    constructor(@((t, k, i) => {}) p: any) {}
+
+    @((t, k, d) => { })
+    static f() {}
+
+    @((t, k, d) => { })
+    static get x() { return 1; }
+    static set x(value) { }
+
+    @((t, k, d) => { })
+    static accessor y = 1;
+
+    @((t, k) => { })
+    static z = 1;
+
+    @((t, k, d) => { })
+    g() {}
+
+    @((t, k, d) => { })
+    get a() { return 1; }
+    set a(value) { }
+
+    @((t, k, d) => { })
+    accessor b = 1;
+
+    @((t, k) => { })
+    c = 1;
+
+    static h(@((t, k, i) => {}) p: any) {}
+    h(@((t, k, i) => {}) p: any) {}
+}
+
+//// [legacyDecorators-contextualTypes.js]
+var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+};
+var __param = (this && this.__param) || function (paramIndex, decorator) {
+    return function (target, key) { decorator(target, key, paramIndex); }
+};
+let C = class C {
+    constructor(p) { }
+    static f() { }
+    static get x() { return 1; }
+    static set x(value) { }
+    static accessor y = 1;
+    static z = 1;
+    g() { }
+    get a() { return 1; }
+    set a(value) { }
+    accessor b = 1;
+    c = 1;
+    static h(p) { }
+    h(p) { }
+};
+__decorate([
+    ((t, k, d) => { })
+], C.prototype, "g", null);
+__decorate([
+    ((t, k, d) => { })
+], C.prototype, "a", null);
+__decorate([
+    ((t, k, d) => { })
+], C.prototype, "b", null);
+__decorate([
+    ((t, k) => { })
+], C.prototype, "c", void 0);
+__decorate([
+    __param(0, ((t, k, i) => { }))
+], C.prototype, "h", null);
+__decorate([
+    ((t, k, d) => { })
+], C, "f", null);
+__decorate([
+    ((t, k, d) => { })
+], C, "x", null);
+__decorate([
+    ((t, k, d) => { })
+], C, "y", null);
+__decorate([
+    ((t, k) => { })
+], C, "z", void 0);
+__decorate([
+    __param(0, ((t, k, i) => { }))
+], C, "h", null);
+C = __decorate([
+    ((t) => { }),
+    __param(0, ((t, k, i) => { }))
+], C);
diff --git a/tests/baselines/reference/legacyDecorators-contextualTypes.symbols b/tests/baselines/reference/legacyDecorators-contextualTypes.symbols
new file mode 100644
index 0000000000000..eb916b335e097
--- /dev/null
+++ b/tests/baselines/reference/legacyDecorators-contextualTypes.symbols
@@ -0,0 +1,97 @@
+=== tests/cases/conformance/decorators/legacyDecorators-contextualTypes.ts ===
+@((t) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 0, 3))
+
+class C {
+>C : Symbol(C, Decl(legacyDecorators-contextualTypes.ts, 0, 0))
+
+    constructor(@((t, k, i) => {}) p: any) {}
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 2, 19))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 2, 21))
+>i : Symbol(i, Decl(legacyDecorators-contextualTypes.ts, 2, 24))
+>p : Symbol(p, Decl(legacyDecorators-contextualTypes.ts, 2, 16))
+
+    @((t, k, d) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 4, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 4, 9))
+>d : Symbol(d, Decl(legacyDecorators-contextualTypes.ts, 4, 12))
+
+    static f() {}
+>f : Symbol(C.f, Decl(legacyDecorators-contextualTypes.ts, 2, 45))
+
+    @((t, k, d) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 7, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 7, 9))
+>d : Symbol(d, Decl(legacyDecorators-contextualTypes.ts, 7, 12))
+
+    static get x() { return 1; }
+>x : Symbol(C.x, Decl(legacyDecorators-contextualTypes.ts, 5, 17), Decl(legacyDecorators-contextualTypes.ts, 8, 32))
+
+    static set x(value) { }
+>x : Symbol(C.x, Decl(legacyDecorators-contextualTypes.ts, 5, 17), Decl(legacyDecorators-contextualTypes.ts, 8, 32))
+>value : Symbol(value, Decl(legacyDecorators-contextualTypes.ts, 9, 17))
+
+    @((t, k, d) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 11, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 11, 9))
+>d : Symbol(d, Decl(legacyDecorators-contextualTypes.ts, 11, 12))
+
+    static accessor y = 1;
+>y : Symbol(C.y, Decl(legacyDecorators-contextualTypes.ts, 9, 27))
+
+    @((t, k) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 14, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 14, 9))
+
+    static z = 1;
+>z : Symbol(C.z, Decl(legacyDecorators-contextualTypes.ts, 12, 26))
+
+    @((t, k, d) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 17, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 17, 9))
+>d : Symbol(d, Decl(legacyDecorators-contextualTypes.ts, 17, 12))
+
+    g() {}
+>g : Symbol(C.g, Decl(legacyDecorators-contextualTypes.ts, 15, 17))
+
+    @((t, k, d) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 20, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 20, 9))
+>d : Symbol(d, Decl(legacyDecorators-contextualTypes.ts, 20, 12))
+
+    get a() { return 1; }
+>a : Symbol(C.a, Decl(legacyDecorators-contextualTypes.ts, 18, 10), Decl(legacyDecorators-contextualTypes.ts, 21, 25))
+
+    set a(value) { }
+>a : Symbol(C.a, Decl(legacyDecorators-contextualTypes.ts, 18, 10), Decl(legacyDecorators-contextualTypes.ts, 21, 25))
+>value : Symbol(value, Decl(legacyDecorators-contextualTypes.ts, 22, 10))
+
+    @((t, k, d) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 24, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 24, 9))
+>d : Symbol(d, Decl(legacyDecorators-contextualTypes.ts, 24, 12))
+
+    accessor b = 1;
+>b : Symbol(C.b, Decl(legacyDecorators-contextualTypes.ts, 22, 20))
+
+    @((t, k) => { })
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 27, 7))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 27, 9))
+
+    c = 1;
+>c : Symbol(C.c, Decl(legacyDecorators-contextualTypes.ts, 25, 19))
+
+    static h(@((t, k, i) => {}) p: any) {}
+>h : Symbol(C.h, Decl(legacyDecorators-contextualTypes.ts, 28, 10))
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 30, 16))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 30, 18))
+>i : Symbol(i, Decl(legacyDecorators-contextualTypes.ts, 30, 21))
+>p : Symbol(p, Decl(legacyDecorators-contextualTypes.ts, 30, 13))
+
+    h(@((t, k, i) => {}) p: any) {}
+>h : Symbol(C.h, Decl(legacyDecorators-contextualTypes.ts, 30, 42))
+>t : Symbol(t, Decl(legacyDecorators-contextualTypes.ts, 31, 9))
+>k : Symbol(k, Decl(legacyDecorators-contextualTypes.ts, 31, 11))
+>i : Symbol(i, Decl(legacyDecorators-contextualTypes.ts, 31, 14))
+>p : Symbol(p, Decl(legacyDecorators-contextualTypes.ts, 31, 6))
+}
diff --git a/tests/baselines/reference/legacyDecorators-contextualTypes.types b/tests/baselines/reference/legacyDecorators-contextualTypes.types
new file mode 100644
index 0000000000000..a881cd2337469
--- /dev/null
+++ b/tests/baselines/reference/legacyDecorators-contextualTypes.types
@@ -0,0 +1,127 @@
+=== tests/cases/conformance/decorators/legacyDecorators-contextualTypes.ts ===
+@((t) => { })
+>((t) => { }) : (t: typeof C) => void
+>(t) => { } : (t: typeof C) => void
+>t : typeof C
+
+class C {
+>C : C
+
+    constructor(@((t, k, i) => {}) p: any) {}
+>((t, k, i) => {}) : (t: typeof C, k: undefined, i: 0) => void
+>(t, k, i) => {} : (t: typeof C, k: undefined, i: 0) => void
+>t : typeof C
+>k : undefined
+>i : 0
+>p : any
+
+    @((t, k, d) => { })
+>((t, k, d) => { }) : (t: typeof C, k: "f", d: TypedPropertyDescriptor<() => void>) => void
+>(t, k, d) => { } : (t: typeof C, k: "f", d: TypedPropertyDescriptor<() => void>) => void
+>t : typeof C
+>k : "f"
+>d : TypedPropertyDescriptor<() => void>
+
+    static f() {}
+>f : () => void
+
+    @((t, k, d) => { })
+>((t, k, d) => { }) : (t: typeof C, k: "x", d: TypedPropertyDescriptor<number>) => void
+>(t, k, d) => { } : (t: typeof C, k: "x", d: TypedPropertyDescriptor<number>) => void
+>t : typeof C
+>k : "x"
+>d : TypedPropertyDescriptor<number>
+
+    static get x() { return 1; }
+>x : number
+>1 : 1
+
+    static set x(value) { }
+>x : number
+>value : number
+
+    @((t, k, d) => { })
+>((t, k, d) => { }) : (t: typeof C, k: "y", d: TypedPropertyDescriptor<number>) => void
+>(t, k, d) => { } : (t: typeof C, k: "y", d: TypedPropertyDescriptor<number>) => void
+>t : typeof C
+>k : "y"
+>d : TypedPropertyDescriptor<number>
+
+    static accessor y = 1;
+>y : number
+>1 : 1
+
+    @((t, k) => { })
+>((t, k) => { }) : (t: typeof C, k: "z") => void
+>(t, k) => { } : (t: typeof C, k: "z") => void
+>t : typeof C
+>k : "z"
+
+    static z = 1;
+>z : number
+>1 : 1
+
+    @((t, k, d) => { })
+>((t, k, d) => { }) : (t: C, k: "g", d: TypedPropertyDescriptor<() => void>) => void
+>(t, k, d) => { } : (t: C, k: "g", d: TypedPropertyDescriptor<() => void>) => void
+>t : C
+>k : "g"
+>d : TypedPropertyDescriptor<() => void>
+
+    g() {}
+>g : () => void
+
+    @((t, k, d) => { })
+>((t, k, d) => { }) : (t: C, k: "a", d: TypedPropertyDescriptor<number>) => void
+>(t, k, d) => { } : (t: C, k: "a", d: TypedPropertyDescriptor<number>) => void
+>t : C
+>k : "a"
+>d : TypedPropertyDescriptor<number>
+
+    get a() { return 1; }
+>a : number
+>1 : 1
+
+    set a(value) { }
+>a : number
+>value : number
+
+    @((t, k, d) => { })
+>((t, k, d) => { }) : (t: C, k: "b", d: TypedPropertyDescriptor<number>) => void
+>(t, k, d) => { } : (t: C, k: "b", d: TypedPropertyDescriptor<number>) => void
+>t : C
+>k : "b"
+>d : TypedPropertyDescriptor<number>
+
+    accessor b = 1;
+>b : number
+>1 : 1
+
+    @((t, k) => { })
+>((t, k) => { }) : (t: C, k: "c") => void
+>(t, k) => { } : (t: C, k: "c") => void
+>t : C
+>k : "c"
+
+    c = 1;
+>c : number
+>1 : 1
+
+    static h(@((t, k, i) => {}) p: any) {}
+>h : (p: any) => void
+>((t, k, i) => {}) : (t: typeof C, k: "h", i: 0) => void
+>(t, k, i) => {} : (t: typeof C, k: "h", i: 0) => void
+>t : typeof C
+>k : "h"
+>i : 0
+>p : any
+
+    h(@((t, k, i) => {}) p: any) {}
+>h : (p: any) => void
+>((t, k, i) => {}) : (t: C, k: "h", i: 0) => void
+>(t, k, i) => {} : (t: C, k: "h", i: 0) => void
+>t : C
+>k : "h"
+>i : 0
+>p : any
+}
diff --git a/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.errors.txt b/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.errors.txt
index 265c339afc2f5..3a7a49aa502bb 100644
--- a/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.errors.txt
+++ b/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.errors.txt
@@ -1,35 +1,27 @@
-tests/cases/compiler/a.ts:1:11 - error TS1109: Expression expected.
-
-1 const a =!@#!@$
-            ~
 tests/cases/compiler/a.ts:1:12 - error TS18026: '#!' can only be used at the start of a file.
 
 1 const a =!@#!@$
              
-tests/cases/compiler/a.ts:1:14 - error TS1109: Expression expected.
+tests/cases/compiler/a.ts:1:13 - error TS1134: Variable declaration expected.
 
 1 const a =!@#!@$
-               ~
-tests/cases/compiler/a.ts:2:12 - error TS1109: Expression expected.
+              ~
+tests/cases/compiler/a.ts:1:16 - error TS1109: Expression expected.
 
-2 const b = !@#!@#!@#!
-             ~
+1 const a =!@#!@$
+                 
 tests/cases/compiler/a.ts:2:13 - error TS18026: '#!' can only be used at the start of a file.
 
 2 const b = !@#!@#!@#!
               
-tests/cases/compiler/a.ts:2:15 - error TS1109: Expression expected.
+tests/cases/compiler/a.ts:2:14 - error TS1134: Variable declaration expected.
 
 2 const b = !@#!@#!@#!
-                ~
+               ~
 tests/cases/compiler/a.ts:2:16 - error TS18026: '#!' can only be used at the start of a file.
 
 2 const b = !@#!@#!@#!
                  
-tests/cases/compiler/a.ts:2:18 - error TS1109: Expression expected.
-
-2 const b = !@#!@#!@#!
-                   ~
 tests/cases/compiler/a.ts:2:19 - error TS18026: '#!' can only be used at the start of a file.
 
 2 const b = !@#!@#!@#!
@@ -84,25 +76,21 @@
   ~~~~~
 
 
-==== tests/cases/compiler/a.ts (18 errors) ====
+==== tests/cases/compiler/a.ts (16 errors) ====
     const a =!@#!@$
-              ~
-!!! error TS1109: Expression expected.
                
 !!! error TS18026: '#!' can only be used at the start of a file.
-                 ~
+                ~
+!!! error TS1134: Variable declaration expected.
+                   
 !!! error TS1109: Expression expected.
     const b = !@#!@#!@#!
-               ~
-!!! error TS1109: Expression expected.
                 
 !!! error TS18026: '#!' can only be used at the start of a file.
-                  ~
-!!! error TS1109: Expression expected.
+                 ~
+!!! error TS1134: Variable declaration expected.
                    
 !!! error TS18026: '#!' can only be used at the start of a file.
-                     ~
-!!! error TS1109: Expression expected.
                       
 !!! error TS18026: '#!' can only be used at the start of a file.
     OK!
@@ -137,8 +125,8 @@
     limit
     ~~~~~
 !!! error TS2304: Cannot find name 'limit'.
-Found 21 errors in 2 files.
+Found 19 errors in 2 files.
 
 Errors  Files
-    18  tests/cases/compiler/a.ts:1
+    16  tests/cases/compiler/a.ts:1
      3  tests/cases/compiler/b.ts:1
diff --git a/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.types b/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.types
index fc6bf68b72f0c..56a8609b7e7c2 100644
--- a/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.types
+++ b/tests/baselines/reference/manyCompilerErrorsInTheTwoFiles.types
@@ -1,23 +1,18 @@
 === tests/cases/compiler/a.ts ===
 const a =!@#!@$
 >a : boolean
->! : boolean
-> : any
-> : any
->! : boolean
+>!@ : boolean
 > : any
+>!@$ : boolean
 >$ : any
 
 const b = !@#!@#!@#!
 >b : boolean
->! : boolean
-> : any
-> : any
->! : boolean
-> : any
+>!@ : boolean
 > : any
->! : boolean
+>!@ : boolean
 > : any
+>!@ : boolean
 > : any
 >!OK! : boolean
 
diff --git a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
index 4ce90177920e9..aa57a8ac9035e 100644
--- a/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
+++ b/tests/baselines/reference/mappedTypeWithAsClauseAndLateBoundProperty.errors.txt
@@ -7,5 +7,5 @@ tests/cases/compiler/mappedTypeWithAsClauseAndLateBoundProperty.ts(3,1): error T
     tgt2 = src2; // Should error
     ~~~~
 !!! error TS2741: Property 'length' is missing in type '{ [x: number]: number; toString: () => string; toLocaleString: () => string; pop: () => number; push: (...items: number[]) => number; concat: { (...items: ConcatArray<number>[]): number[]; (...items: (number | ConcatArray<number>)[]): number[]; }; join: (separator?: string) => string; reverse: () => number[]; shift: () => number; slice: (start?: number, end?: number) => number[]; sort: (compareFn?: (a: number, b: number) => number) => number[]; splice: { (start: number, deleteCount?: number): number[]; (start: number, deleteCount: number, ...items: number[]): number[]; }; unshift: (...items: number[]) => number; indexOf: (searchElement: number, fromIndex?: number) => number; lastIndexOf: (searchElement: number, fromIndex?: number) => number; every: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): this is S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): boolean; }; some: (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any) => boolean; forEach: (callbackfn: (value: number, index: number, array: number[]) => void, thisArg?: any) => void; map: <U>(callbackfn: (value: number, index: number, array: number[]) => U, thisArg?: any) => U[]; filter: { <S extends number>(predicate: (value: number, index: number, array: number[]) => value is S, thisArg?: any): S[]; (predicate: (value: number, index: number, array: number[]) => unknown, thisArg?: any): number[]; }; reduce: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; reduceRight: { (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number): number; (callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: number[]) => number, initialValue: number): number; <U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: number[]) => U, initialValue: U): U; }; find: { <S extends number>(predicate: (value: number, index: number, obj: number[]) => value is S, thisArg?: any): S; (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any): number; }; findIndex: (predicate: (value: number, index: number, obj: number[]) => unknown, thisArg?: any) => number; fill: (value: number, start?: number, end?: number) => number[]; copyWithin: (target: number, start: number, end?: number) => number[]; entries: () => IterableIterator<[number, number]>; keys: () => IterableIterator<number>; values: () => IterableIterator<number>; includes: (searchElement: number, fromIndex?: number) => boolean; flatMap: <U, This = undefined>(callback: (this: This, value: number, index: number, array: number[]) => U | readonly U[], thisArg?: This) => U[]; flat: <A, D extends number = 1>(this: A, depth?: D) => FlatArray<A, D>[]; [iterator]: () => IterableIterator<number>; [unscopables]: () => { copyWithin: boolean; entries: boolean; fill: boolean; find: boolean; findIndex: boolean; keys: boolean; values: boolean; }; }' but required in type 'number[]'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1304:5: 'length' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1307:5: 'length' is declared here.
     
\ No newline at end of file
diff --git a/tests/baselines/reference/metadataImportType.js b/tests/baselines/reference/metadataImportType.js
index e104a7a721e62..ca7d138e2541e 100644
--- a/tests/baselines/reference/metadataImportType.js
+++ b/tests/baselines/reference/metadataImportType.js
@@ -17,7 +17,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.A = void 0;
-var A = /** @class */ (function () {
+var A = exports.A = /** @class */ (function () {
     function A() {
     }
     __decorate([
@@ -26,4 +26,3 @@ var A = /** @class */ (function () {
     ], A.prototype, "b", void 0);
     return A;
 }());
-exports.A = A;
diff --git a/tests/baselines/reference/metadataOfClassFromAlias.js b/tests/baselines/reference/metadataOfClassFromAlias.js
index 657cdf21f975f..e63697b564d18 100644
--- a/tests/baselines/reference/metadataOfClassFromAlias.js
+++ b/tests/baselines/reference/metadataOfClassFromAlias.js
@@ -41,7 +41,7 @@ var auxiliry_1 = require("./auxiliry");
 function annotation() {
     return function (target) { };
 }
-var ClassA = /** @class */ (function () {
+var ClassA = exports.ClassA = /** @class */ (function () {
     function ClassA() {
     }
     __decorate([
@@ -50,4 +50,3 @@ var ClassA = /** @class */ (function () {
     ], ClassA.prototype, "array", void 0);
     return ClassA;
 }());
-exports.ClassA = ClassA;
diff --git a/tests/baselines/reference/metadataOfClassFromAlias.symbols b/tests/baselines/reference/metadataOfClassFromAlias.symbols
index e68e1fdab3e87..ac4584c8fd929 100644
--- a/tests/baselines/reference/metadataOfClassFromAlias.symbols
+++ b/tests/baselines/reference/metadataOfClassFromAlias.symbols
@@ -12,7 +12,7 @@ import { SomeClass } from './auxiliry';
 
 function annotation(): PropertyDecorator {
 >annotation : Symbol(annotation, Decl(test.ts, 0, 39))
->PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.es5.d.ts, --, --))
+>PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
     return (target: any): void => { };
 >target : Symbol(target, Decl(test.ts, 2, 12))
diff --git a/tests/baselines/reference/metadataOfClassFromAlias2.js b/tests/baselines/reference/metadataOfClassFromAlias2.js
index 8b7a2b93130fd..02d2626a97e39 100644
--- a/tests/baselines/reference/metadataOfClassFromAlias2.js
+++ b/tests/baselines/reference/metadataOfClassFromAlias2.js
@@ -40,7 +40,7 @@ exports.ClassA = void 0;
 function annotation() {
     return function (target) { };
 }
-var ClassA = /** @class */ (function () {
+var ClassA = exports.ClassA = /** @class */ (function () {
     function ClassA() {
     }
     __decorate([
@@ -49,4 +49,3 @@ var ClassA = /** @class */ (function () {
     ], ClassA.prototype, "array", void 0);
     return ClassA;
 }());
-exports.ClassA = ClassA;
diff --git a/tests/baselines/reference/metadataOfClassFromAlias2.symbols b/tests/baselines/reference/metadataOfClassFromAlias2.symbols
index 7c9881403a4b2..6eacac1beb97d 100644
--- a/tests/baselines/reference/metadataOfClassFromAlias2.symbols
+++ b/tests/baselines/reference/metadataOfClassFromAlias2.symbols
@@ -12,7 +12,7 @@ import { SomeClass } from './auxiliry';
 
 function annotation(): PropertyDecorator {
 >annotation : Symbol(annotation, Decl(test.ts, 0, 39))
->PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.es5.d.ts, --, --))
+>PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 
     return (target: any): void => { };
 >target : Symbol(target, Decl(test.ts, 2, 12))
diff --git a/tests/baselines/reference/metadataOfEventAlias.js b/tests/baselines/reference/metadataOfEventAlias.js
index 9993967432eae..c4d49829539f2 100644
--- a/tests/baselines/reference/metadataOfEventAlias.js
+++ b/tests/baselines/reference/metadataOfEventAlias.js
@@ -28,7 +28,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.SomeClass = void 0;
 function Input(target, key) { }
-var SomeClass = /** @class */ (function () {
+var SomeClass = exports.SomeClass = /** @class */ (function () {
     function SomeClass() {
     }
     __decorate([
@@ -37,4 +37,3 @@ var SomeClass = /** @class */ (function () {
     ], SomeClass.prototype, "event", void 0);
     return SomeClass;
 }());
-exports.SomeClass = SomeClass;
diff --git a/tests/baselines/reference/metadataReferencedWithinFilteredUnion.js b/tests/baselines/reference/metadataReferencedWithinFilteredUnion.js
index 7c7d70c749b5a..1462af8a63290 100644
--- a/tests/baselines/reference/metadataReferencedWithinFilteredUnion.js
+++ b/tests/baselines/reference/metadataReferencedWithinFilteredUnion.js
@@ -42,7 +42,7 @@ exports.Class2 = void 0;
 var Class1_1 = require("./Class1");
 function decorate(target, propertyKey) {
 }
-var Class2 = /** @class */ (function () {
+var Class2 = exports.Class2 = /** @class */ (function () {
     function Class2() {
     }
     Object.defineProperty(Class2.prototype, "prop", {
@@ -59,4 +59,3 @@ var Class2 = /** @class */ (function () {
     ], Class2.prototype, "prop", null);
     return Class2;
 }());
-exports.Class2 = Class2;
diff --git a/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt b/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt
index 6eeddecfb1b68..b07c2eb109593 100644
--- a/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt
+++ b/tests/baselines/reference/narrowExceptionVariableInCatchClause.errors.txt
@@ -24,7 +24,7 @@ tests/cases/conformance/types/any/narrowExceptionVariableInCatchClause.ts(16,17)
                 err.massage; // ERROR: Property 'massage' does not exist on type 'Error'
                     ~~~~~~~
 !!! error TS2551: Property 'massage' does not exist on type 'Error'. Did you mean 'message'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1054:5: 'message' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1057:5: 'message' is declared here.
             }
     
             else {
diff --git a/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt b/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt
index 5e5918b323351..0292b260eac4b 100644
--- a/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt
+++ b/tests/baselines/reference/narrowFromAnyWithInstanceof.errors.txt
@@ -22,7 +22,7 @@ tests/cases/conformance/types/any/narrowFromAnyWithInstanceof.ts(22,7): error TS
         x.mesage;
           ~~~~~~
 !!! error TS2551: Property 'mesage' does not exist on type 'Error'. Did you mean 'message'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1054:5: 'message' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1057:5: 'message' is declared here.
     }
     
     if (x instanceof Date) {
@@ -30,6 +30,6 @@ tests/cases/conformance/types/any/narrowFromAnyWithInstanceof.ts(22,7): error TS
         x.getHuors();
           ~~~~~~~~
 !!! error TS2551: Property 'getHuors' does not exist on type 'Date'. Did you mean 'getHours'?
-!!! related TS2728 /.ts/lib.es5.d.ts:783:5: 'getHours' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:786:5: 'getHours' is declared here.
     }
     
\ No newline at end of file
diff --git a/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt b/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt
index bf105754b9d86..0e5168963afc6 100644
--- a/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt
+++ b/tests/baselines/reference/narrowFromAnyWithTypePredicate.errors.txt
@@ -41,7 +41,7 @@ tests/cases/conformance/types/any/narrowFromAnyWithTypePredicate.ts(33,7): error
         x.mesage;
           ~~~~~~
 !!! error TS2551: Property 'mesage' does not exist on type 'Error'. Did you mean 'message'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1054:5: 'message' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1057:5: 'message' is declared here.
     }
     
     if (isDate(x)) {
@@ -49,6 +49,6 @@ tests/cases/conformance/types/any/narrowFromAnyWithTypePredicate.ts(33,7): error
         x.getHuors();
           ~~~~~~~~
 !!! error TS2551: Property 'getHuors' does not exist on type 'Date'. Did you mean 'getHours'?
-!!! related TS2728 /.ts/lib.es5.d.ts:783:5: 'getHours' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:786:5: 'getHours' is declared here.
     }
     
\ No newline at end of file
diff --git a/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=node16).trace.json b/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=node16).trace.json
index 4d8ad876095fe..986ba264c0f45 100644
--- a/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=node16).trace.json
+++ b/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=node16).trace.json
@@ -27,5 +27,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=nodenext).trace.json b/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=nodenext).trace.json
index 77e7411b6622e..5dfb35ce7971f 100644
--- a/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=nodenext).trace.json
+++ b/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=nodenext).trace.json
@@ -27,5 +27,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesAtTypesPriority.trace.json b/tests/baselines/reference/nodeModulesAtTypesPriority.trace.json
index 2fb49cc45b7a1..a57c094e0df37 100644
--- a/tests/baselines/reference/nodeModulesAtTypesPriority.trace.json
+++ b/tests/baselines/reference/nodeModulesAtTypesPriority.trace.json
@@ -76,5 +76,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=node16).trace.json b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=node16).trace.json
index d0aae2ef9523b..85626d1375d94 100644
--- a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=node16).trace.json
+++ b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=node16).trace.json
@@ -177,5 +177,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
index de93053530308..d87b67457f168 100644
--- a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
@@ -177,5 +177,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesPackageImports(module=node16).trace.json b/tests/baselines/reference/nodeModulesPackageImports(module=node16).trace.json
index 8396c26c2c24e..2bc0174a861f3 100644
--- a/tests/baselines/reference/nodeModulesPackageImports(module=node16).trace.json
+++ b/tests/baselines/reference/nodeModulesPackageImports(module=node16).trace.json
@@ -90,5 +90,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
index c41f412d789fc..fe767320bdde3 100644
--- a/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
@@ -90,5 +90,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=node16).trace.json b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=node16).trace.json
index f2612545b7532..2e8e583407907 100644
--- a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=node16).trace.json
+++ b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=node16).trace.json
@@ -191,5 +191,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
index b8c7bc83a1807..939099488d397 100644
--- a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
@@ -191,5 +191,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.errors.txt b/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.errors.txt
index 04c780f9e635f..efd29fd25da93 100644
--- a/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.errors.txt
+++ b/tests/baselines/reference/objectTypeHidingMembersOfExtendedObject.errors.txt
@@ -1,11 +1,11 @@
 tests/cases/conformance/types/members/objectTypeHidingMembersOfExtendedObject.ts(10,5): error TS2411: Property 'data' of type 'A' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(124,5): error TS2411: Property 'constructor' of type 'Function' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(127,5): error TS2411: Property 'toString' of type '() => string' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(130,5): error TS2411: Property 'toLocaleString' of type '() => string' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(133,5): error TS2411: Property 'valueOf' of type '() => Object' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(139,5): error TS2411: Property 'hasOwnProperty' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(145,5): error TS2411: Property 'isPrototypeOf' of type '(v: Object) => boolean' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(151,5): error TS2411: Property 'propertyIsEnumerable' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(127,5): error TS2411: Property 'constructor' of type 'Function' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(130,5): error TS2411: Property 'toString' of type '() => string' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(133,5): error TS2411: Property 'toLocaleString' of type '() => string' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(136,5): error TS2411: Property 'valueOf' of type '() => Object' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(142,5): error TS2411: Property 'hasOwnProperty' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(148,5): error TS2411: Property 'isPrototypeOf' of type '(v: Object) => boolean' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(154,5): error TS2411: Property 'propertyIsEnumerable' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
 
 
 ==== tests/cases/conformance/types/members/objectTypeHidingMembersOfExtendedObject.ts (1 errors) ====
diff --git a/tests/baselines/reference/objectTypeWithStringIndexerHidingObjectIndexer.errors.txt b/tests/baselines/reference/objectTypeWithStringIndexerHidingObjectIndexer.errors.txt
index b049b6b9ad64a..9f969937e4f08 100644
--- a/tests/baselines/reference/objectTypeWithStringIndexerHidingObjectIndexer.errors.txt
+++ b/tests/baselines/reference/objectTypeWithStringIndexerHidingObjectIndexer.errors.txt
@@ -1,10 +1,10 @@
-lib.es5.d.ts(124,5): error TS2411: Property 'constructor' of type 'Function' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(127,5): error TS2411: Property 'toString' of type '() => string' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(130,5): error TS2411: Property 'toLocaleString' of type '() => string' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(133,5): error TS2411: Property 'valueOf' of type '() => Object' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(139,5): error TS2411: Property 'hasOwnProperty' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(145,5): error TS2411: Property 'isPrototypeOf' of type '(v: Object) => boolean' is not assignable to 'string' index type 'Object'.
-lib.es5.d.ts(151,5): error TS2411: Property 'propertyIsEnumerable' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(127,5): error TS2411: Property 'constructor' of type 'Function' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(130,5): error TS2411: Property 'toString' of type '() => string' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(133,5): error TS2411: Property 'toLocaleString' of type '() => string' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(136,5): error TS2411: Property 'valueOf' of type '() => Object' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(142,5): error TS2411: Property 'hasOwnProperty' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(148,5): error TS2411: Property 'isPrototypeOf' of type '(v: Object) => boolean' is not assignable to 'string' index type 'Object'.
+lib.es5.d.ts(154,5): error TS2411: Property 'propertyIsEnumerable' of type '(v: PropertyKey) => boolean' is not assignable to 'string' index type 'Object'.
 
 
 ==== tests/cases/conformance/types/members/objectTypeWithStringIndexerHidingObjectIndexer.ts (0 errors) ====
diff --git a/tests/baselines/reference/parserMemberAccessAfterPostfixExpression1.errors.txt b/tests/baselines/reference/parserMemberAccessAfterPostfixExpression1.errors.txt
index daab2dd65ec82..e54869c75ca99 100644
--- a/tests/baselines/reference/parserMemberAccessAfterPostfixExpression1.errors.txt
+++ b/tests/baselines/reference/parserMemberAccessAfterPostfixExpression1.errors.txt
@@ -11,4 +11,4 @@ tests/cases/conformance/parser/ecmascript5/Expressions/parserMemberAccessAfterPo
 !!! error TS1005: ';' expected.
         ~~~~~~~~
 !!! error TS2552: Cannot find name 'toString'. Did you mean 'String'?
-!!! related TS2728 /.ts/lib.es5.d.ts:530:13: 'String' is declared here.
\ No newline at end of file
+!!! related TS2728 /.ts/lib.es5.d.ts:533:13: 'String' is declared here.
\ No newline at end of file
diff --git a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt
index 2d94ae168c2f6..c808903b073a6 100644
--- a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt
+++ b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity1.errors.txt
@@ -7,6 +7,6 @@ tests/cases/conformance/parser/ecmascript5/RegularExpressions/parserRegularExpre
     /notregexp/a.foo();
      ~~~~~~~~~
 !!! error TS2552: Cannot find name 'notregexp'. Did you mean 'RegExp'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1050:13: 'RegExp' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1053:13: 'RegExp' is declared here.
                ~
 !!! error TS2304: Cannot find name 'a'.
\ No newline at end of file
diff --git a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt
index 589152746a27e..0f8129fff7f04 100644
--- a/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt
+++ b/tests/baselines/reference/parserRegularExpressionDivideAmbiguity2.errors.txt
@@ -6,6 +6,6 @@ tests/cases/conformance/parser/ecmascript5/RegularExpressions/parserRegularExpre
     (1) /notregexp/a.foo();
          ~~~~~~~~~
 !!! error TS2552: Cannot find name 'notregexp'. Did you mean 'RegExp'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1050:13: 'RegExp' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1053:13: 'RegExp' is declared here.
                    ~
 !!! error TS2304: Cannot find name 'a'.
\ No newline at end of file
diff --git a/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt b/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt
index 462082d4e4bd6..21f0375cfb473 100644
--- a/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt
+++ b/tests/baselines/reference/parserS7.2_A1.5_T2.errors.txt
@@ -19,7 +19,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.2_A1.5_T2.ts(20,3): error TS
       $ERROR('#1: eval("\\u00A0var x\\u00A0= 1\\u00A0"); x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     
     //CHECK#2
@@ -28,7 +28,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.2_A1.5_T2.ts(20,3): error TS
       $ERROR('#2:  var x = 1 ; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     
     
diff --git a/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt b/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt
index 26fe88430f8ab..26d6645fef9cb 100644
--- a/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt
+++ b/tests/baselines/reference/parserS7.3_A1.1_T2.errors.txt
@@ -21,7 +21,7 @@ tests/cases/conformance/parser/ecmascript5/parserS7.3_A1.1_T2.ts(17,3): error TS
       $ERROR('#1: var\\nx\\n=\\n1\\n; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     
     
\ No newline at end of file
diff --git a/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt b/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt
index 6b6cc78cfa1a5..82d6f4a9ccf9f 100644
--- a/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt
+++ b/tests/baselines/reference/parserS7.6_A4.2_T1.errors.txt
@@ -50,70 +50,70 @@ tests/cases/conformance/parser/ecmascript5/parserS7.6_A4.2_T1.ts(142,3): error T
       $ERROR('#А');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0411 = 1;
     if (Б !== 1) {
       $ERROR('#Б');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0412 = 1;
     if (В !== 1) {
       $ERROR('#В');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0413 = 1;
     if (Г !== 1) {
       $ERROR('#Г');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0414 = 1;
     if (Д !== 1) {
       $ERROR('#Д');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0415 = 1;
     if (Е !== 1) {
       $ERROR('#Е');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0416 = 1;
     if (Ж !== 1) {
       $ERROR('#Ж');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0417 = 1;
     if (З !== 1) {
       $ERROR('#З');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0418 = 1;
     if (И !== 1) {
       $ERROR('#И');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0419 = 1;
     if (Й !== 1) {
       $ERROR('#Й');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u041A = 1;
     if (К !== 1) {
diff --git a/tests/baselines/reference/parserUnicode1.errors.txt b/tests/baselines/reference/parserUnicode1.errors.txt
index 0f224db25e319..3bf3ec8da574f 100644
--- a/tests/baselines/reference/parserUnicode1.errors.txt
+++ b/tests/baselines/reference/parserUnicode1.errors.txt
@@ -11,13 +11,13 @@ tests/cases/conformance/parser/ecmascript5/parserUnicode1.ts(10,5): error TS2552
         $ERROR('#6.1: var \\u0078x = 1; xx === 6. Actual: ' + (xx));
         ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
       }
     }
     catch (e) {
         $ERROR('#6.2: var \\u0078x = 1; xx === 6. Actual: ' + (xx));
         ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/potentiallyUncalledDecorators.errors.txt b/tests/baselines/reference/potentiallyUncalledDecorators.errors.txt
index 4fd7d52c64c1a..0899858110c3a 100644
--- a/tests/baselines/reference/potentiallyUncalledDecorators.errors.txt
+++ b/tests/baselines/reference/potentiallyUncalledDecorators.errors.txt
@@ -2,21 +2,21 @@ tests/cases/compiler/potentiallyUncalledDecorators.ts(4,5): error TS1329: 'Input
 tests/cases/compiler/potentiallyUncalledDecorators.ts(35,1): error TS1329: 'noArgs' accepts too few arguments to be used as a decorator here. Did you mean to call it first and write '@noArgs()'?
 tests/cases/compiler/potentiallyUncalledDecorators.ts(37,5): error TS1329: 'noArgs' accepts too few arguments to be used as a decorator here. Did you mean to call it first and write '@noArgs()'?
 tests/cases/compiler/potentiallyUncalledDecorators.ts(38,5): error TS1329: 'noArgs' accepts too few arguments to be used as a decorator here. Did you mean to call it first and write '@noArgs()'?
-tests/cases/compiler/potentiallyUncalledDecorators.ts(41,1): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof B'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(43,5): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(44,5): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(47,1): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof C'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(41,2): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof B'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(43,6): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(44,6): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(47,2): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof C'.
 tests/cases/compiler/potentiallyUncalledDecorators.ts(49,5): error TS1329: 'oneOptional' accepts too few arguments to be used as a decorator here. Did you mean to call it first and write '@oneOptional()'?
 tests/cases/compiler/potentiallyUncalledDecorators.ts(50,5): error TS1329: 'oneOptional' accepts too few arguments to be used as a decorator here. Did you mean to call it first and write '@oneOptional()'?
-tests/cases/compiler/potentiallyUncalledDecorators.ts(53,1): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof D'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(55,5): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(56,5): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(59,1): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof E'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(61,5): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(62,5): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(65,1): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof F'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(67,5): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
-tests/cases/compiler/potentiallyUncalledDecorators.ts(68,5): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(53,2): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof D'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(55,6): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(56,6): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(59,2): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof E'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(61,6): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(62,6): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(65,2): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof F'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(67,6): error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
+tests/cases/compiler/potentiallyUncalledDecorators.ts(68,6): error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
 
 
 ==== tests/cases/compiler/potentiallyUncalledDecorators.ts (19 errors) ====
@@ -69,19 +69,19 @@ tests/cases/compiler/potentiallyUncalledDecorators.ts(68,5): error TS1270: Decor
     }
     
     @allRest
-    ~~~~~~~~
+     ~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof B'.
     class B {
         @allRest foo: any;
-        ~~~~~~~~
+         ~~~~~~~
 !!! error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
         @allRest bar() { }
-        ~~~~~~~~
+         ~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
     }
     
     @oneOptional
-    ~~~~~~~~~~~~
+     ~~~~~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof C'.
     class C {
         @oneOptional foo: any;
@@ -93,38 +93,38 @@ tests/cases/compiler/potentiallyUncalledDecorators.ts(68,5): error TS1270: Decor
     }
     
     @twoOptional
-    ~~~~~~~~~~~~
+     ~~~~~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof D'.
     class D {
         @twoOptional foo: any;
-        ~~~~~~~~~~~~
+         ~~~~~~~~~~~
 !!! error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
         @twoOptional bar() { }
-        ~~~~~~~~~~~~
+         ~~~~~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
     }
     
     @threeOptional
-    ~~~~~~~~~~~~~~
+     ~~~~~~~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof E'.
     class E {
         @threeOptional foo: any;
-        ~~~~~~~~~~~~~~
+         ~~~~~~~~~~~~~
 !!! error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
         @threeOptional bar() { }
-        ~~~~~~~~~~~~~~
+         ~~~~~~~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
     }
     
     @oneOptionalWithRest
-    ~~~~~~~~~~~~~~~~~~~~
+     ~~~~~~~~~~~~~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | typeof F'.
     class F {
         @oneOptionalWithRest foo: any;
-        ~~~~~~~~~~~~~~~~~~~~
+         ~~~~~~~~~~~~~~~~~~~
 !!! error TS1271: Decorator function return type is 'OmniDecorator' but is expected to be 'void' or 'any'.
         @oneOptionalWithRest bar() { }
-        ~~~~~~~~~~~~~~~~~~~~
+         ~~~~~~~~~~~~~~~~~~~
 !!! error TS1270: Decorator function return type 'OmniDecorator' is not assignable to type 'void | TypedPropertyDescriptor<() => void>'.
     }
     
diff --git a/tests/baselines/reference/potentiallyUncalledDecorators.symbols b/tests/baselines/reference/potentiallyUncalledDecorators.symbols
index 38fe3f3dc520e..9d14d52647e0c 100644
--- a/tests/baselines/reference/potentiallyUncalledDecorators.symbols
+++ b/tests/baselines/reference/potentiallyUncalledDecorators.symbols
@@ -15,7 +15,7 @@ class FooComponent {
 // Glimmer-style tracked API:
 declare const tracked: PropertyDecorator & { (...watchedProperties: string[]): any; }
 >tracked : Symbol(tracked, Decl(potentiallyUncalledDecorators.ts, 7, 13))
->PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.es5.d.ts, --, --))
+>PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 >watchedProperties : Symbol(watchedProperties, Decl(potentiallyUncalledDecorators.ts, 7, 46))
 
 class Person {
@@ -50,9 +50,9 @@ class MultiplyByTwo {
 
 interface OmniDecorator extends MethodDecorator, ClassDecorator, PropertyDecorator {
 >OmniDecorator : Symbol(OmniDecorator, Decl(potentiallyUncalledDecorators.ts, 19, 1))
->MethodDecorator : Symbol(MethodDecorator, Decl(lib.es5.d.ts, --, --))
->ClassDecorator : Symbol(ClassDecorator, Decl(lib.es5.d.ts, --, --))
->PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.es5.d.ts, --, --))
+>MethodDecorator : Symbol(MethodDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
+>ClassDecorator : Symbol(ClassDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
+>PropertyDecorator : Symbol(PropertyDecorator, Decl(lib.decorators.legacy.d.ts, --, --))
 }
 
 declare function noArgs(): OmniDecorator;
diff --git a/tests/baselines/reference/privacyCannotNameVarTypeDeclFile.js b/tests/baselines/reference/privacyCannotNameVarTypeDeclFile.js
index 25b0719e889d4..c58862a4f19ff 100644
--- a/tests/baselines/reference/privacyCannotNameVarTypeDeclFile.js
+++ b/tests/baselines/reference/privacyCannotNameVarTypeDeclFile.js
@@ -156,7 +156,7 @@ exports.createExportedWidget4 = createExportedWidget4;
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.publicVarWithPrivateModulePropertyTypes1 = exports.publicVarWithPrivateModulePropertyTypes = exports.publicClassWithPrivateModulePropertyTypes = exports.publicVarWithPrivatePropertyTypes1 = exports.publicVarWithPrivatePropertyTypes = exports.publicClassWithWithPrivatePropertyTypes = void 0;
 var exporter = require("./privacyCannotNameVarTypeDeclFile_exporter");
-var publicClassWithWithPrivatePropertyTypes = /** @class */ (function () {
+var publicClassWithWithPrivatePropertyTypes = exports.publicClassWithWithPrivatePropertyTypes = /** @class */ (function () {
     function publicClassWithWithPrivatePropertyTypes() {
         this.myPublicProperty = exporter.createExportedWidget1(); // Error
         this.myPrivateProperty = exporter.createExportedWidget1();
@@ -169,7 +169,6 @@ var publicClassWithWithPrivatePropertyTypes = /** @class */ (function () {
     publicClassWithWithPrivatePropertyTypes.myPrivateStaticProperty1 = exporter.createExportedWidget3();
     return publicClassWithWithPrivatePropertyTypes;
 }());
-exports.publicClassWithWithPrivatePropertyTypes = publicClassWithWithPrivatePropertyTypes;
 var privateClassWithWithPrivatePropertyTypes = /** @class */ (function () {
     function privateClassWithWithPrivatePropertyTypes() {
         this.myPublicProperty = exporter.createExportedWidget1();
@@ -187,7 +186,7 @@ exports.publicVarWithPrivatePropertyTypes = exporter.createExportedWidget1(); //
 var privateVarWithPrivatePropertyTypes = exporter.createExportedWidget1();
 exports.publicVarWithPrivatePropertyTypes1 = exporter.createExportedWidget3(); // Error
 var privateVarWithPrivatePropertyTypes1 = exporter.createExportedWidget3();
-var publicClassWithPrivateModulePropertyTypes = /** @class */ (function () {
+var publicClassWithPrivateModulePropertyTypes = exports.publicClassWithPrivateModulePropertyTypes = /** @class */ (function () {
     function publicClassWithPrivateModulePropertyTypes() {
         this.myPublicProperty = exporter.createExportedWidget2(); // Error
         this.myPublicProperty1 = exporter.createExportedWidget4(); // Error
@@ -196,7 +195,6 @@ var publicClassWithPrivateModulePropertyTypes = /** @class */ (function () {
     publicClassWithPrivateModulePropertyTypes.myPublicStaticProperty1 = exporter.createExportedWidget4(); // Error
     return publicClassWithPrivateModulePropertyTypes;
 }());
-exports.publicClassWithPrivateModulePropertyTypes = publicClassWithPrivateModulePropertyTypes;
 exports.publicVarWithPrivateModulePropertyTypes = exporter.createExportedWidget2(); // Error
 exports.publicVarWithPrivateModulePropertyTypes1 = exporter.createExportedWidget4(); // Error
 var privateClassWithPrivateModulePropertyTypes = /** @class */ (function () {
diff --git a/tests/baselines/reference/privateNameFieldClassExpression.js b/tests/baselines/reference/privateNameFieldClassExpression.js
index b62835d6fe036..94720459d5d7c 100644
--- a/tests/baselines/reference/privateNameFieldClassExpression.js
+++ b/tests/baselines/reference/privateNameFieldClassExpression.js
@@ -15,6 +15,10 @@ class B {
 
 
 //// [privateNameFieldClassExpression.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 var _B_foo, _B_foo2;
 class B {
     constructor() {
@@ -24,6 +28,7 @@ class B {
                     console.log("hello");
                 }
             },
+            __setFunctionName(_a, "#foo"),
             _a.test = 123,
             _a));
         _B_foo2.set(this, (_b = class Foo {
diff --git a/tests/baselines/reference/privateNameMethodAccess.js b/tests/baselines/reference/privateNameMethodAccess.js
index de9680a242698..10cf647682eb9 100644
--- a/tests/baselines/reference/privateNameMethodAccess.js
+++ b/tests/baselines/reference/privateNameMethodAccess.js
@@ -29,7 +29,7 @@ var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (
     if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
     return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
 };
-var _A2_instances, _A2_method, _a;
+var _A2_instances, _A2_method;
 class A2 {
     constructor() {
         _A2_instances.add(this);
@@ -42,14 +42,12 @@ class A2 {
     }
 }
 _A2_instances = new WeakSet(), _A2_method = function _A2_method() { return ""; };
-(_a = new A2())..call(_a); // Error
+new A2().(); // Error
 function foo() {
-    var _a;
-    (_a = new A2())..call(_a); // Error
+    new A2().(); // Error
 }
 class B2 {
     m() {
-        var _a;
-        (_a = new A2())..call(_a);
+        new A2().();
     }
 }
diff --git a/tests/baselines/reference/privateNameMethodsDerivedClasses.js b/tests/baselines/reference/privateNameMethodsDerivedClasses.js
index b6b4027e749b1..f961d9c25cd60 100644
--- a/tests/baselines/reference/privateNameMethodsDerivedClasses.js
+++ b/tests/baselines/reference/privateNameMethodsDerivedClasses.js
@@ -30,6 +30,6 @@ class Base {
 _Base_instances = new WeakSet(), _Base_prop = function _Base_prop() { return 123; };
 class Derived extends Base {
     static method(x) {
-        console.log(x..call(x));
+        console.log(x.());
     }
 }
diff --git a/tests/baselines/reference/privateNameStaticEmitHelpers.js b/tests/baselines/reference/privateNameStaticEmitHelpers.js
index 0e57493d5342d..9e1180deeac8e 100644
--- a/tests/baselines/reference/privateNameStaticEmitHelpers.js
+++ b/tests/baselines/reference/privateNameStaticEmitHelpers.js
@@ -16,7 +16,8 @@ export declare function __classPrivateFieldSet<T extends object, V>(receiver: T,
 //// [main.js]
 var _a, _S_a, _S_b, _S_c_get;
 import { __classPrivateFieldGet, __classPrivateFieldSet } from "tslib";
-export class S {
+class S {
 }
 _a = S, _S_b = function _S_b() { __classPrivateFieldSet(this, _a, 42, "f", _S_a); }, _S_c_get = function _S_c_get() { return __classPrivateFieldGet(S, _a, "m", _S_b).call(S); };
 _S_a = { value: 1 };
+export { S };
diff --git a/tests/baselines/reference/privateNameStaticFieldClassExpression.js b/tests/baselines/reference/privateNameStaticFieldClassExpression.js
index 7b159cdaebed2..69d37160d618b 100644
--- a/tests/baselines/reference/privateNameStaticFieldClassExpression.js
+++ b/tests/baselines/reference/privateNameStaticFieldClassExpression.js
@@ -28,6 +28,10 @@ var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (
     if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
     return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
 };
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 var _a, _B_foo, _B_foo2, _b, _c;
 class B {
     m() {
@@ -44,6 +48,7 @@ _B_foo = { value: (_b = class {
                 new (__classPrivateFieldGet(B, _a, "f", _B_foo2))();
             }
         },
+        __setFunctionName(_b, "#foo"),
         _b.test = 123,
         _b) };
 _B_foo2 = { value: (_c = class Foo {
diff --git a/tests/baselines/reference/privateNameStaticFieldNoInitializer(target=es2015).js b/tests/baselines/reference/privateNameStaticFieldNoInitializer(target=es2015).js
index a53922b5e74a4..74aec7b6c4e97 100644
--- a/tests/baselines/reference/privateNameStaticFieldNoInitializer(target=es2015).js
+++ b/tests/baselines/reference/privateNameStaticFieldNoInitializer(target=es2015).js
@@ -9,9 +9,14 @@ class C2 {
 
 
 //// [privateNameStaticFieldNoInitializer.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 var _a, _C_x, _b, _C2_x;
 const C = (_a = class {
     },
+    __setFunctionName(_a, "C"),
     _C_x = { value: void 0 },
     _a);
 class C2 {
diff --git a/tests/baselines/reference/project/baseline/amd/baseline.json b/tests/baselines/reference/project/baseline/amd/baseline.json
index 9755a1248e5d2..a657a20ad98e7 100644
--- a/tests/baselines/reference/project/baseline/amd/baseline.json
+++ b/tests/baselines/reference/project/baseline/amd/baseline.json
@@ -8,6 +8,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "emit.ts"
     ],
diff --git a/tests/baselines/reference/project/baseline/node/baseline.json b/tests/baselines/reference/project/baseline/node/baseline.json
index 9755a1248e5d2..a657a20ad98e7 100644
--- a/tests/baselines/reference/project/baseline/node/baseline.json
+++ b/tests/baselines/reference/project/baseline/node/baseline.json
@@ -8,6 +8,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "emit.ts"
     ],
diff --git a/tests/baselines/reference/project/baseline2/amd/baseline2.json b/tests/baselines/reference/project/baseline2/amd/baseline2.json
index 714753635fc4f..0f004751a1306 100644
--- a/tests/baselines/reference/project/baseline2/amd/baseline2.json
+++ b/tests/baselines/reference/project/baseline2/amd/baseline2.json
@@ -8,6 +8,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "dont_emit.ts"
     ],
diff --git a/tests/baselines/reference/project/baseline2/node/baseline2.json b/tests/baselines/reference/project/baseline2/node/baseline2.json
index 714753635fc4f..0f004751a1306 100644
--- a/tests/baselines/reference/project/baseline2/node/baseline2.json
+++ b/tests/baselines/reference/project/baseline2/node/baseline2.json
@@ -8,6 +8,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "dont_emit.ts"
     ],
diff --git a/tests/baselines/reference/project/baseline3/amd/baseline3.json b/tests/baselines/reference/project/baseline3/amd/baseline3.json
index 4229a725fea82..9ede04842b072 100644
--- a/tests/baselines/reference/project/baseline3/amd/baseline3.json
+++ b/tests/baselines/reference/project/baseline3/amd/baseline3.json
@@ -8,6 +8,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "nestedModule.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/baseline3/node/baseline3.json b/tests/baselines/reference/project/baseline3/node/baseline3.json
index 4229a725fea82..9ede04842b072 100644
--- a/tests/baselines/reference/project/baseline3/node/baseline3.json
+++ b/tests/baselines/reference/project/baseline3/node/baseline3.json
@@ -8,6 +8,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "nestedModule.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/cantFindTheModule/amd/cantFindTheModule.json b/tests/baselines/reference/project/cantFindTheModule/amd/cantFindTheModule.json
index 0b515284e3a08..4bb76415a9cf5 100644
--- a/tests/baselines/reference/project/cantFindTheModule/amd/cantFindTheModule.json
+++ b/tests/baselines/reference/project/cantFindTheModule/amd/cantFindTheModule.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/cantFindTheModule/node/cantFindTheModule.json b/tests/baselines/reference/project/cantFindTheModule/node/cantFindTheModule.json
index 0b515284e3a08..4bb76415a9cf5 100644
--- a/tests/baselines/reference/project/cantFindTheModule/node/cantFindTheModule.json
+++ b/tests/baselines/reference/project/cantFindTheModule/node/cantFindTheModule.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/circularReferencing/amd/circularReferencing.json b/tests/baselines/reference/project/circularReferencing/amd/circularReferencing.json
index f6d7713ab7e87..e0adde3643b7c 100644
--- a/tests/baselines/reference/project/circularReferencing/amd/circularReferencing.json
+++ b/tests/baselines/reference/project/circularReferencing/amd/circularReferencing.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/circularReferencing/node/circularReferencing.json b/tests/baselines/reference/project/circularReferencing/node/circularReferencing.json
index f6d7713ab7e87..e0adde3643b7c 100644
--- a/tests/baselines/reference/project/circularReferencing/node/circularReferencing.json
+++ b/tests/baselines/reference/project/circularReferencing/node/circularReferencing.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/circularReferencing2/amd/circularReferencing2.json b/tests/baselines/reference/project/circularReferencing2/amd/circularReferencing2.json
index 5a7ca027ac36c..0ead0bf51703f 100644
--- a/tests/baselines/reference/project/circularReferencing2/amd/circularReferencing2.json
+++ b/tests/baselines/reference/project/circularReferencing2/amd/circularReferencing2.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "b.ts",
         "c.ts",
         "a.ts"
diff --git a/tests/baselines/reference/project/circularReferencing2/node/circularReferencing2.json b/tests/baselines/reference/project/circularReferencing2/node/circularReferencing2.json
index 5a7ca027ac36c..0ead0bf51703f 100644
--- a/tests/baselines/reference/project/circularReferencing2/node/circularReferencing2.json
+++ b/tests/baselines/reference/project/circularReferencing2/node/circularReferencing2.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "b.ts",
         "c.ts",
         "a.ts"
diff --git a/tests/baselines/reference/project/declarationDir/amd/declarationDir.json b/tests/baselines/reference/project/declarationDir/amd/declarationDir.json
index 17abb913af055..4214974858c8f 100644
--- a/tests/baselines/reference/project/declarationDir/amd/declarationDir.json
+++ b/tests/baselines/reference/project/declarationDir/amd/declarationDir.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "subfolder/b.ts",
         "a.ts",
         "subfolder/c.ts"
diff --git a/tests/baselines/reference/project/declarationDir/node/declarationDir.json b/tests/baselines/reference/project/declarationDir/node/declarationDir.json
index 17abb913af055..4214974858c8f 100644
--- a/tests/baselines/reference/project/declarationDir/node/declarationDir.json
+++ b/tests/baselines/reference/project/declarationDir/node/declarationDir.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "subfolder/b.ts",
         "a.ts",
         "subfolder/c.ts"
diff --git a/tests/baselines/reference/project/declarationDir2/amd/declarationDir2.json b/tests/baselines/reference/project/declarationDir2/amd/declarationDir2.json
index 94bc3b1268d9b..8dca1ee9e8229 100644
--- a/tests/baselines/reference/project/declarationDir2/amd/declarationDir2.json
+++ b/tests/baselines/reference/project/declarationDir2/amd/declarationDir2.json
@@ -12,6 +12,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "subfolder/b.ts",
         "a.ts",
         "subfolder/c.ts"
diff --git a/tests/baselines/reference/project/declarationDir2/node/declarationDir2.json b/tests/baselines/reference/project/declarationDir2/node/declarationDir2.json
index 94bc3b1268d9b..8dca1ee9e8229 100644
--- a/tests/baselines/reference/project/declarationDir2/node/declarationDir2.json
+++ b/tests/baselines/reference/project/declarationDir2/node/declarationDir2.json
@@ -12,6 +12,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "subfolder/b.ts",
         "a.ts",
         "subfolder/c.ts"
diff --git a/tests/baselines/reference/project/declarationDir3/amd/declarationDir3.json b/tests/baselines/reference/project/declarationDir3/amd/declarationDir3.json
index d33019d5c8117..9ff661cf1941d 100644
--- a/tests/baselines/reference/project/declarationDir3/amd/declarationDir3.json
+++ b/tests/baselines/reference/project/declarationDir3/amd/declarationDir3.json
@@ -12,6 +12,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "subfolder/b.ts",
         "a.ts",
         "subfolder/c.ts"
diff --git a/tests/baselines/reference/project/declarationDir3/node/declarationDir3.json b/tests/baselines/reference/project/declarationDir3/node/declarationDir3.json
index 2b9afd1da7c93..eec7e0d434d53 100644
--- a/tests/baselines/reference/project/declarationDir3/node/declarationDir3.json
+++ b/tests/baselines/reference/project/declarationDir3/node/declarationDir3.json
@@ -12,6 +12,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "subfolder/b.ts",
         "a.ts",
         "subfolder/c.ts"
diff --git a/tests/baselines/reference/project/declarationsCascadingImports/amd/declarationsCascadingImports.json b/tests/baselines/reference/project/declarationsCascadingImports/amd/declarationsCascadingImports.json
index 95a06e2c43ce3..ec65857139eb5 100644
--- a/tests/baselines/reference/project/declarationsCascadingImports/amd/declarationsCascadingImports.json
+++ b/tests/baselines/reference/project/declarationsCascadingImports/amd/declarationsCascadingImports.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsCascadingImports/node/declarationsCascadingImports.json b/tests/baselines/reference/project/declarationsCascadingImports/node/declarationsCascadingImports.json
index 95a06e2c43ce3..ec65857139eb5 100644
--- a/tests/baselines/reference/project/declarationsCascadingImports/node/declarationsCascadingImports.json
+++ b/tests/baselines/reference/project/declarationsCascadingImports/node/declarationsCascadingImports.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsExportNamespace/amd/declarationsExportNamespace.json b/tests/baselines/reference/project/declarationsExportNamespace/amd/declarationsExportNamespace.json
index 377f2cd4301b0..5ee4c3bdaf343 100644
--- a/tests/baselines/reference/project/declarationsExportNamespace/amd/declarationsExportNamespace.json
+++ b/tests/baselines/reference/project/declarationsExportNamespace/amd/declarationsExportNamespace.json
@@ -13,6 +13,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "useModule.ts"
     ]
diff --git a/tests/baselines/reference/project/declarationsExportNamespace/node/declarationsExportNamespace.json b/tests/baselines/reference/project/declarationsExportNamespace/node/declarationsExportNamespace.json
index 377f2cd4301b0..5ee4c3bdaf343 100644
--- a/tests/baselines/reference/project/declarationsExportNamespace/node/declarationsExportNamespace.json
+++ b/tests/baselines/reference/project/declarationsExportNamespace/node/declarationsExportNamespace.json
@@ -13,6 +13,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "useModule.ts"
     ]
diff --git a/tests/baselines/reference/project/declarationsGlobalImport/amd/declarationsGlobalImport.json b/tests/baselines/reference/project/declarationsGlobalImport/amd/declarationsGlobalImport.json
index 4e4a276b105fd..0158e73ba48c1 100644
--- a/tests/baselines/reference/project/declarationsGlobalImport/amd/declarationsGlobalImport.json
+++ b/tests/baselines/reference/project/declarationsGlobalImport/amd/declarationsGlobalImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "glo_m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsGlobalImport/node/declarationsGlobalImport.json b/tests/baselines/reference/project/declarationsGlobalImport/node/declarationsGlobalImport.json
index 4e4a276b105fd..0158e73ba48c1 100644
--- a/tests/baselines/reference/project/declarationsGlobalImport/node/declarationsGlobalImport.json
+++ b/tests/baselines/reference/project/declarationsGlobalImport/node/declarationsGlobalImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "glo_m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsImportedInPrivate/amd/declarationsImportedInPrivate.json b/tests/baselines/reference/project/declarationsImportedInPrivate/amd/declarationsImportedInPrivate.json
index 0bd0319bcf634..1fa264e37abe0 100644
--- a/tests/baselines/reference/project/declarationsImportedInPrivate/amd/declarationsImportedInPrivate.json
+++ b/tests/baselines/reference/project/declarationsImportedInPrivate/amd/declarationsImportedInPrivate.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "private_m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsImportedInPrivate/node/declarationsImportedInPrivate.json b/tests/baselines/reference/project/declarationsImportedInPrivate/node/declarationsImportedInPrivate.json
index 0bd0319bcf634..1fa264e37abe0 100644
--- a/tests/baselines/reference/project/declarationsImportedInPrivate/node/declarationsImportedInPrivate.json
+++ b/tests/baselines/reference/project/declarationsImportedInPrivate/node/declarationsImportedInPrivate.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "private_m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsImportedUseInFunction/amd/declarationsImportedUseInFunction.json b/tests/baselines/reference/project/declarationsImportedUseInFunction/amd/declarationsImportedUseInFunction.json
index c08c9d47452a9..f216999671c73 100644
--- a/tests/baselines/reference/project/declarationsImportedUseInFunction/amd/declarationsImportedUseInFunction.json
+++ b/tests/baselines/reference/project/declarationsImportedUseInFunction/amd/declarationsImportedUseInFunction.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "fncOnly_m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsImportedUseInFunction/node/declarationsImportedUseInFunction.json b/tests/baselines/reference/project/declarationsImportedUseInFunction/node/declarationsImportedUseInFunction.json
index c08c9d47452a9..f216999671c73 100644
--- a/tests/baselines/reference/project/declarationsImportedUseInFunction/node/declarationsImportedUseInFunction.json
+++ b/tests/baselines/reference/project/declarationsImportedUseInFunction/node/declarationsImportedUseInFunction.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "fncOnly_m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/amd/declarationsIndirectImportShouldResultInError.json b/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/amd/declarationsIndirectImportShouldResultInError.json
index d254eba8d0224..5f73363211da6 100644
--- a/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/amd/declarationsIndirectImportShouldResultInError.json
+++ b/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/amd/declarationsIndirectImportShouldResultInError.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "m5.ts",
         "useModule.ts"
diff --git a/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/node/declarationsIndirectImportShouldResultInError.json b/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/node/declarationsIndirectImportShouldResultInError.json
index d254eba8d0224..5f73363211da6 100644
--- a/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/node/declarationsIndirectImportShouldResultInError.json
+++ b/tests/baselines/reference/project/declarationsIndirectImportShouldResultInError/node/declarationsIndirectImportShouldResultInError.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "m5.ts",
         "useModule.ts"
diff --git a/tests/baselines/reference/project/declarationsMultipleTimesImport/amd/declarationsMultipleTimesImport.json b/tests/baselines/reference/project/declarationsMultipleTimesImport/amd/declarationsMultipleTimesImport.json
index 7c8fc1343c9aa..0dc7b2394b46e 100644
--- a/tests/baselines/reference/project/declarationsMultipleTimesImport/amd/declarationsMultipleTimesImport.json
+++ b/tests/baselines/reference/project/declarationsMultipleTimesImport/amd/declarationsMultipleTimesImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsMultipleTimesImport/node/declarationsMultipleTimesImport.json b/tests/baselines/reference/project/declarationsMultipleTimesImport/node/declarationsMultipleTimesImport.json
index 7c8fc1343c9aa..0dc7b2394b46e 100644
--- a/tests/baselines/reference/project/declarationsMultipleTimesImport/node/declarationsMultipleTimesImport.json
+++ b/tests/baselines/reference/project/declarationsMultipleTimesImport/node/declarationsMultipleTimesImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/amd/declarationsMultipleTimesMultipleImport.json b/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/amd/declarationsMultipleTimesMultipleImport.json
index f3f40e98c9858..9b162c147a5a0 100644
--- a/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/amd/declarationsMultipleTimesMultipleImport.json
+++ b/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/amd/declarationsMultipleTimesMultipleImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "m5.ts",
         "useModule.ts"
diff --git a/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/node/declarationsMultipleTimesMultipleImport.json b/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/node/declarationsMultipleTimesMultipleImport.json
index f3f40e98c9858..9b162c147a5a0 100644
--- a/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/node/declarationsMultipleTimesMultipleImport.json
+++ b/tests/baselines/reference/project/declarationsMultipleTimesMultipleImport/node/declarationsMultipleTimesMultipleImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "m5.ts",
         "useModule.ts"
diff --git a/tests/baselines/reference/project/declarationsSimpleImport/amd/declarationsSimpleImport.json b/tests/baselines/reference/project/declarationsSimpleImport/amd/declarationsSimpleImport.json
index 252ede2efb224..f4444e64474d9 100644
--- a/tests/baselines/reference/project/declarationsSimpleImport/amd/declarationsSimpleImport.json
+++ b/tests/baselines/reference/project/declarationsSimpleImport/amd/declarationsSimpleImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declarationsSimpleImport/node/declarationsSimpleImport.json b/tests/baselines/reference/project/declarationsSimpleImport/node/declarationsSimpleImport.json
index 252ede2efb224..f4444e64474d9 100644
--- a/tests/baselines/reference/project/declarationsSimpleImport/node/declarationsSimpleImport.json
+++ b/tests/baselines/reference/project/declarationsSimpleImport/node/declarationsSimpleImport.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m4.ts",
         "useModule.ts"
     ],
diff --git a/tests/baselines/reference/project/declareExportAdded/amd/declareExportAdded.json b/tests/baselines/reference/project/declareExportAdded/amd/declareExportAdded.json
index 87b93e70ac876..d38d9ddc9a758 100644
--- a/tests/baselines/reference/project/declareExportAdded/amd/declareExportAdded.json
+++ b/tests/baselines/reference/project/declareExportAdded/amd/declareExportAdded.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref.d.ts",
         "consumer.ts"
     ],
diff --git a/tests/baselines/reference/project/declareExportAdded/node/declareExportAdded.json b/tests/baselines/reference/project/declareExportAdded/node/declareExportAdded.json
index 87b93e70ac876..d38d9ddc9a758 100644
--- a/tests/baselines/reference/project/declareExportAdded/node/declareExportAdded.json
+++ b/tests/baselines/reference/project/declareExportAdded/node/declareExportAdded.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref.d.ts",
         "consumer.ts"
     ],
diff --git a/tests/baselines/reference/project/declareVariableCollision/amd/declareVariableCollision.json b/tests/baselines/reference/project/declareVariableCollision/amd/declareVariableCollision.json
index 1209d18100e4f..65ccf17f6919e 100644
--- a/tests/baselines/reference/project/declareVariableCollision/amd/declareVariableCollision.json
+++ b/tests/baselines/reference/project/declareVariableCollision/amd/declareVariableCollision.json
@@ -8,6 +8,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "in1.d.ts",
         "in2.d.ts"
diff --git a/tests/baselines/reference/project/declareVariableCollision/node/declareVariableCollision.json b/tests/baselines/reference/project/declareVariableCollision/node/declareVariableCollision.json
index 1209d18100e4f..65ccf17f6919e 100644
--- a/tests/baselines/reference/project/declareVariableCollision/node/declareVariableCollision.json
+++ b/tests/baselines/reference/project/declareVariableCollision/node/declareVariableCollision.json
@@ -8,6 +8,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "in1.d.ts",
         "in2.d.ts"
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/amd/defaultExcludeNodeModulesAndOutDir.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/amd/defaultExcludeNodeModulesAndOutDir.json
index 37ce942ebd408..91920a455e9d4 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/amd/defaultExcludeNodeModulesAndOutDir.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/amd/defaultExcludeNodeModulesAndOutDir.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/node/defaultExcludeNodeModulesAndOutDir.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/node/defaultExcludeNodeModulesAndOutDir.json
index 37ce942ebd408..91920a455e9d4 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/node/defaultExcludeNodeModulesAndOutDir.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDir/node/defaultExcludeNodeModulesAndOutDir.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndOutDirWithAllowJS.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndOutDirWithAllowJS.json
index 039e08b7e748f..fff1ea080239e 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndOutDirWithAllowJS.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndOutDirWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/node/defaultExcludeNodeModulesAndOutDirWithAllowJS.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/node/defaultExcludeNodeModulesAndOutDirWithAllowJS.json
index 039e08b7e748f..fff1ea080239e 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/node/defaultExcludeNodeModulesAndOutDirWithAllowJS.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndOutDirWithAllowJS/node/defaultExcludeNodeModulesAndOutDirWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/amd/defaultExcludeNodeModulesAndRelativePathOutDir.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/amd/defaultExcludeNodeModulesAndRelativePathOutDir.json
index 9671ff57456d3..e43be5d0f705e 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/amd/defaultExcludeNodeModulesAndRelativePathOutDir.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/amd/defaultExcludeNodeModulesAndRelativePathOutDir.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/node/defaultExcludeNodeModulesAndRelativePathOutDir.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/node/defaultExcludeNodeModulesAndRelativePathOutDir.json
index 9671ff57456d3..e43be5d0f705e 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/node/defaultExcludeNodeModulesAndRelativePathOutDir.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDir/node/defaultExcludeNodeModulesAndRelativePathOutDir.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json
index f467c0b1d3985..5af8a7f08ce3c 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/amd/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/node/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/node/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json
index f467c0b1d3985..5af8a7f08ce3c 100644
--- a/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/node/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json
+++ b/tests/baselines/reference/project/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS/node/defaultExcludeNodeModulesAndRelativePathOutDirWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/amd/defaultExcludeOnlyNodeModules.json b/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/amd/defaultExcludeOnlyNodeModules.json
index cc9075b55f3d3..18778e7387bd8 100644
--- a/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/amd/defaultExcludeOnlyNodeModules.json
+++ b/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/amd/defaultExcludeOnlyNodeModules.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/node/defaultExcludeOnlyNodeModules.json b/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/node/defaultExcludeOnlyNodeModules.json
index cc9075b55f3d3..18778e7387bd8 100644
--- a/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/node/defaultExcludeOnlyNodeModules.json
+++ b/tests/baselines/reference/project/defaultExcludeOnlyNodeModules/node/defaultExcludeOnlyNodeModules.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/emitDecoratorMetadataCommonJSISolatedModules.json b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/emitDecoratorMetadataCommonJSISolatedModules.json
index 75b1a829d4c9a..6848189cda4a5 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/emitDecoratorMetadataCommonJSISolatedModules.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/emitDecoratorMetadataCommonJSISolatedModules.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/main.js b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/main.js
index 9ca20dffe6e8f..523abb1315121 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/amd/main.js
@@ -11,7 +11,7 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.MyClass1 = void 0;
-    var MyClass1 = /** @class */ (function () {
+    var MyClass1 = exports.MyClass1 = /** @class */ (function () {
         function MyClass1(_elementRef) {
             this._elementRef = _elementRef;
         }
@@ -22,5 +22,4 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
         ], MyClass1);
         return MyClass1;
     }());
-    exports.MyClass1 = MyClass1;
 });
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/emitDecoratorMetadataCommonJSISolatedModules.json b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/emitDecoratorMetadataCommonJSISolatedModules.json
index 75b1a829d4c9a..6848189cda4a5 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/emitDecoratorMetadataCommonJSISolatedModules.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/emitDecoratorMetadataCommonJSISolatedModules.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/main.js b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/main.js
index 7a668087a0301..adbff7ffa99a7 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModules/node/main.js
@@ -11,7 +11,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.MyClass1 = void 0;
 var ng = require("angular2/core");
-var MyClass1 = /** @class */ (function () {
+var MyClass1 = exports.MyClass1 = /** @class */ (function () {
     function MyClass1(_elementRef) {
         this._elementRef = _elementRef;
     }
@@ -22,4 +22,3 @@ var MyClass1 = /** @class */ (function () {
     ], MyClass1);
     return MyClass1;
 }());
-exports.MyClass1 = MyClass1;
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json
index 07ec3b5ee88bf..121fb3a5c940e 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/main.js b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/main.js
index 9ca20dffe6e8f..523abb1315121 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/amd/main.js
@@ -11,7 +11,7 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.MyClass1 = void 0;
-    var MyClass1 = /** @class */ (function () {
+    var MyClass1 = exports.MyClass1 = /** @class */ (function () {
         function MyClass1(_elementRef) {
             this._elementRef = _elementRef;
         }
@@ -22,5 +22,4 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
         ], MyClass1);
         return MyClass1;
     }());
-    exports.MyClass1 = MyClass1;
 });
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json
index 07ec3b5ee88bf..121fb3a5c940e 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/emitDecoratorMetadataCommonJSISolatedModulesNoResolve.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/main.js b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/main.js
index 7a668087a0301..adbff7ffa99a7 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataCommonJSISolatedModulesNoResolve/node/main.js
@@ -11,7 +11,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.MyClass1 = void 0;
 var ng = require("angular2/core");
-var MyClass1 = /** @class */ (function () {
+var MyClass1 = exports.MyClass1 = /** @class */ (function () {
     function MyClass1(_elementRef) {
         this._elementRef = _elementRef;
     }
@@ -22,4 +22,3 @@ var MyClass1 = /** @class */ (function () {
     ], MyClass1);
     return MyClass1;
 }());
-exports.MyClass1 = MyClass1;
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/emitDecoratorMetadataSystemJS.json b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/emitDecoratorMetadataSystemJS.json
index 921792b4d5834..dc03355fa1c76 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/emitDecoratorMetadataSystemJS.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/emitDecoratorMetadataSystemJS.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/main.js b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/main.js
index 9ca20dffe6e8f..523abb1315121 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/amd/main.js
@@ -11,7 +11,7 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.MyClass1 = void 0;
-    var MyClass1 = /** @class */ (function () {
+    var MyClass1 = exports.MyClass1 = /** @class */ (function () {
         function MyClass1(_elementRef) {
             this._elementRef = _elementRef;
         }
@@ -22,5 +22,4 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
         ], MyClass1);
         return MyClass1;
     }());
-    exports.MyClass1 = MyClass1;
 });
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/emitDecoratorMetadataSystemJS.json b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/emitDecoratorMetadataSystemJS.json
index 921792b4d5834..dc03355fa1c76 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/emitDecoratorMetadataSystemJS.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/emitDecoratorMetadataSystemJS.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/main.js b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/main.js
index 7a668087a0301..adbff7ffa99a7 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJS/node/main.js
@@ -11,7 +11,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.MyClass1 = void 0;
 var ng = require("angular2/core");
-var MyClass1 = /** @class */ (function () {
+var MyClass1 = exports.MyClass1 = /** @class */ (function () {
     function MyClass1(_elementRef) {
         this._elementRef = _elementRef;
     }
@@ -22,4 +22,3 @@ var MyClass1 = /** @class */ (function () {
     ], MyClass1);
     return MyClass1;
 }());
-exports.MyClass1 = MyClass1;
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/emitDecoratorMetadataSystemJSISolatedModules.json b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/emitDecoratorMetadataSystemJSISolatedModules.json
index bf61617e9ee43..06a9aeb0c6ff1 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/emitDecoratorMetadataSystemJSISolatedModules.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/emitDecoratorMetadataSystemJSISolatedModules.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/main.js b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/main.js
index 9ca20dffe6e8f..523abb1315121 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/amd/main.js
@@ -11,7 +11,7 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.MyClass1 = void 0;
-    var MyClass1 = /** @class */ (function () {
+    var MyClass1 = exports.MyClass1 = /** @class */ (function () {
         function MyClass1(_elementRef) {
             this._elementRef = _elementRef;
         }
@@ -22,5 +22,4 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
         ], MyClass1);
         return MyClass1;
     }());
-    exports.MyClass1 = MyClass1;
 });
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/emitDecoratorMetadataSystemJSISolatedModules.json b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/emitDecoratorMetadataSystemJSISolatedModules.json
index bf61617e9ee43..06a9aeb0c6ff1 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/emitDecoratorMetadataSystemJSISolatedModules.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/emitDecoratorMetadataSystemJSISolatedModules.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/main.js b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/main.js
index 7a668087a0301..adbff7ffa99a7 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModules/node/main.js
@@ -11,7 +11,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.MyClass1 = void 0;
 var ng = require("angular2/core");
-var MyClass1 = /** @class */ (function () {
+var MyClass1 = exports.MyClass1 = /** @class */ (function () {
     function MyClass1(_elementRef) {
         this._elementRef = _elementRef;
     }
@@ -22,4 +22,3 @@ var MyClass1 = /** @class */ (function () {
     ], MyClass1);
     return MyClass1;
 }());
-exports.MyClass1 = MyClass1;
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json
index f8bf277afc9b7..12bdf4ad87c9e 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/main.js b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/main.js
index 9ca20dffe6e8f..523abb1315121 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/amd/main.js
@@ -11,7 +11,7 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
     exports.MyClass1 = void 0;
-    var MyClass1 = /** @class */ (function () {
+    var MyClass1 = exports.MyClass1 = /** @class */ (function () {
         function MyClass1(_elementRef) {
             this._elementRef = _elementRef;
         }
@@ -22,5 +22,4 @@ define(["require", "exports", "angular2/core"], function (require, exports, ng)
         ], MyClass1);
         return MyClass1;
     }());
-    exports.MyClass1 = MyClass1;
 });
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json
index f8bf277afc9b7..12bdf4ad87c9e 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/emitDecoratorMetadataSystemJSISolatedModulesNoResolve.json
@@ -5,6 +5,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/main.js b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/main.js
index 7a668087a0301..adbff7ffa99a7 100644
--- a/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/main.js
+++ b/tests/baselines/reference/project/emitDecoratorMetadataSystemJSISolatedModulesNoResolve/node/main.js
@@ -11,7 +11,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.MyClass1 = void 0;
 var ng = require("angular2/core");
-var MyClass1 = /** @class */ (function () {
+var MyClass1 = exports.MyClass1 = /** @class */ (function () {
     function MyClass1(_elementRef) {
         this._elementRef = _elementRef;
     }
@@ -22,4 +22,3 @@ var MyClass1 = /** @class */ (function () {
     ], MyClass1);
     return MyClass1;
 }());
-exports.MyClass1 = MyClass1;
diff --git a/tests/baselines/reference/project/extReferencingExtAndInt/amd/extReferencingExtAndInt.json b/tests/baselines/reference/project/extReferencingExtAndInt/amd/extReferencingExtAndInt.json
index a9cb45644300b..4e831c70cc536 100644
--- a/tests/baselines/reference/project/extReferencingExtAndInt/amd/extReferencingExtAndInt.json
+++ b/tests/baselines/reference/project/extReferencingExtAndInt/amd/extReferencingExtAndInt.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "internal.ts",
         "external2.ts",
         "external.ts"
diff --git a/tests/baselines/reference/project/extReferencingExtAndInt/node/extReferencingExtAndInt.json b/tests/baselines/reference/project/extReferencingExtAndInt/node/extReferencingExtAndInt.json
index a9cb45644300b..4e831c70cc536 100644
--- a/tests/baselines/reference/project/extReferencingExtAndInt/node/extReferencingExtAndInt.json
+++ b/tests/baselines/reference/project/extReferencingExtAndInt/node/extReferencingExtAndInt.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "internal.ts",
         "external2.ts",
         "external.ts"
diff --git a/tests/baselines/reference/project/intReferencingExtAndInt/amd/intReferencingExtAndInt.json b/tests/baselines/reference/project/intReferencingExtAndInt/amd/intReferencingExtAndInt.json
index 01f3f77cd8f90..6c1b0208c08f8 100644
--- a/tests/baselines/reference/project/intReferencingExtAndInt/amd/intReferencingExtAndInt.json
+++ b/tests/baselines/reference/project/intReferencingExtAndInt/amd/intReferencingExtAndInt.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "internal2.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/intReferencingExtAndInt/node/intReferencingExtAndInt.json b/tests/baselines/reference/project/intReferencingExtAndInt/node/intReferencingExtAndInt.json
index 01f3f77cd8f90..6c1b0208c08f8 100644
--- a/tests/baselines/reference/project/intReferencingExtAndInt/node/intReferencingExtAndInt.json
+++ b/tests/baselines/reference/project/intReferencingExtAndInt/node/intReferencingExtAndInt.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "internal2.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/invalidRootFile/amd/invalidRootFile.json b/tests/baselines/reference/project/invalidRootFile/amd/invalidRootFile.json
index 48214f84c42c3..e44762caccbb9 100644
--- a/tests/baselines/reference/project/invalidRootFile/amd/invalidRootFile.json
+++ b/tests/baselines/reference/project/invalidRootFile/amd/invalidRootFile.json
@@ -7,7 +7,9 @@
         "a.ts"
     ],
     "resolvedInputFiles": [
-        "lib.es5.d.ts"
+        "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts"
     ],
     "emittedFiles": []
 }
\ No newline at end of file
diff --git a/tests/baselines/reference/project/invalidRootFile/node/invalidRootFile.json b/tests/baselines/reference/project/invalidRootFile/node/invalidRootFile.json
index 48214f84c42c3..e44762caccbb9 100644
--- a/tests/baselines/reference/project/invalidRootFile/node/invalidRootFile.json
+++ b/tests/baselines/reference/project/invalidRootFile/node/invalidRootFile.json
@@ -7,7 +7,9 @@
         "a.ts"
     ],
     "resolvedInputFiles": [
-        "lib.es5.d.ts"
+        "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts"
     ],
     "emittedFiles": []
 }
\ No newline at end of file
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/amd/jsFileCompilationDifferentNamesNotSpecified.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/amd/jsFileCompilationDifferentNamesNotSpecified.json
index be94fc66a8c64..2a08e8c8281fe 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/amd/jsFileCompilationDifferentNamesNotSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/amd/jsFileCompilationDifferentNamesNotSpecified.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesNotSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesNotSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/node/jsFileCompilationDifferentNamesNotSpecified.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/node/jsFileCompilationDifferentNamesNotSpecified.json
index be94fc66a8c64..2a08e8c8281fe 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/node/jsFileCompilationDifferentNamesNotSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecified/node/jsFileCompilationDifferentNamesNotSpecified.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesNotSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesNotSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json
index c46555642c029..07a76b67d5f50 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesNotSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesNotSpecifiedWithAllowJs/a.ts",
         "DifferentNamesNotSpecifiedWithAllowJs/b.js"
     ],
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json
index c46555642c029..07a76b67d5f50 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesNotSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesNotSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesNotSpecifiedWithAllowJs/a.ts",
         "DifferentNamesNotSpecifiedWithAllowJs/b.js"
     ],
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/amd/jsFileCompilationDifferentNamesSpecified.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/amd/jsFileCompilationDifferentNamesSpecified.json
index 502060573f515..95d8a687b9797 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/amd/jsFileCompilationDifferentNamesSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/amd/jsFileCompilationDifferentNamesSpecified.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/node/jsFileCompilationDifferentNamesSpecified.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/node/jsFileCompilationDifferentNamesSpecified.json
index 502060573f515..95d8a687b9797 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/node/jsFileCompilationDifferentNamesSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecified/node/jsFileCompilationDifferentNamesSpecified.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json
index 8cf81d3ff9b26..0906672000255 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/amd/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesSpecifiedWithAllowJs/a.ts",
         "DifferentNamesSpecifiedWithAllowJs/b.js"
     ],
diff --git a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json
index 8cf81d3ff9b26..0906672000255 100644
--- a/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationDifferentNamesSpecifiedWithAllowJs/node/jsFileCompilationDifferentNamesSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "DifferentNamesSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "DifferentNamesSpecifiedWithAllowJs/a.ts",
         "DifferentNamesSpecifiedWithAllowJs/b.js"
     ],
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/amd/jsFileCompilationSameNameDTsSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/amd/jsFileCompilationSameNameDTsSpecified.json
index 9e7ef540d5386..b49d96d257cb1 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/amd/jsFileCompilationSameNameDTsSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/amd/jsFileCompilationSameNameDTsSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsSpecified/a.d.ts"
     ],
     "emittedFiles": []
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/node/jsFileCompilationSameNameDTsSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/node/jsFileCompilationSameNameDTsSpecified.json
index 9e7ef540d5386..b49d96d257cb1 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/node/jsFileCompilationSameNameDTsSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecified/node/jsFileCompilationSameNameDTsSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsSpecified/a.d.ts"
     ],
     "emittedFiles": []
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json
index 9be7157af9964..ba0f9fa2a251a 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsSpecifiedWithAllowJs/a.d.ts"
     ],
     "emittedFiles": []
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/node/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/node/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json
index 9be7157af9964..ba0f9fa2a251a 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/node/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDTsSpecifiedWithAllowJs/node/jsFileCompilationSameNameDTsSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsSpecifiedWithAllowJs/a.d.ts"
     ],
     "emittedFiles": []
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/amd/jsFileCompilationSameNameDtsNotSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/amd/jsFileCompilationSameNameDtsNotSpecified.json
index e29f95b2b96fd..0f15f8581d0e0 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/amd/jsFileCompilationSameNameDtsNotSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/amd/jsFileCompilationSameNameDtsNotSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsNotSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsNotSpecified/a.d.ts"
     ],
     "emittedFiles": []
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/node/jsFileCompilationSameNameDtsNotSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/node/jsFileCompilationSameNameDtsNotSpecified.json
index e29f95b2b96fd..0f15f8581d0e0 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/node/jsFileCompilationSameNameDtsNotSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecified/node/jsFileCompilationSameNameDtsNotSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsNotSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsNotSpecified/a.d.ts"
     ],
     "emittedFiles": []
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json
index ebd4263bc1a63..90e73c5929972 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsNotSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsNotSpecifiedWithAllowJs/a.d.ts",
         "SameNameDTsNotSpecifiedWithAllowJs/a.js"
     ],
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json
index ebd4263bc1a63..90e73c5929972 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameDtsNotSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameDTsNotSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameDTsNotSpecifiedWithAllowJs/a.d.ts",
         "SameNameDTsNotSpecifiedWithAllowJs/a.js"
     ],
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/amd/jsFileCompilationSameNameFilesNotSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/amd/jsFileCompilationSameNameFilesNotSpecified.json
index 4c001c1895dc9..fab79425254ee 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/amd/jsFileCompilationSameNameFilesNotSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/amd/jsFileCompilationSameNameFilesNotSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameFilesNotSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameFilesNotSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/node/jsFileCompilationSameNameFilesNotSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/node/jsFileCompilationSameNameFilesNotSpecified.json
index 4c001c1895dc9..fab79425254ee 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/node/jsFileCompilationSameNameFilesNotSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecified/node/jsFileCompilationSameNameFilesNotSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameFilesNotSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameFilesNotSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json
index bb39a53bd9ef0..85a6f59946b6f 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameFilesNotSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameFilesNotSpecifiedWithAllowJs/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json
index bb39a53bd9ef0..85a6f59946b6f 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesNotSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameFilesNotSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameFilesNotSpecifiedWithAllowJs/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/amd/jsFileCompilationSameNameFilesSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/amd/jsFileCompilationSameNameFilesSpecified.json
index 37fa1c42071d2..9688907add484 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/amd/jsFileCompilationSameNameFilesSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/amd/jsFileCompilationSameNameFilesSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameTsSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameTsSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/node/jsFileCompilationSameNameFilesSpecified.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/node/jsFileCompilationSameNameFilesSpecified.json
index 37fa1c42071d2..9688907add484 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/node/jsFileCompilationSameNameFilesSpecified.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecified/node/jsFileCompilationSameNameFilesSpecified.json
@@ -6,6 +6,8 @@
     "project": "SameNameTsSpecified",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameTsSpecified/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json
index 426bbe37374e0..5b40f09f36c75 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/amd/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameTsSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameTsSpecifiedWithAllowJs/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json
index 426bbe37374e0..5b40f09f36c75 100644
--- a/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json
+++ b/tests/baselines/reference/project/jsFileCompilationSameNameFilesSpecifiedWithAllowJs/node/jsFileCompilationSameNameFilesSpecifiedWithAllowJs.json
@@ -6,6 +6,8 @@
     "project": "SameNameTsSpecifiedWithAllowJs",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "SameNameTsSpecifiedWithAllowJs/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/amd/mapRootAbsolutePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/amd/mapRootAbsolutePathMixedSubfolderNoOutdir.json
index c384f244bb3c8..1ab0b95ea404d 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/amd/mapRootAbsolutePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/amd/mapRootAbsolutePathMixedSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/node/mapRootAbsolutePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/node/mapRootAbsolutePathMixedSubfolderNoOutdir.json
index c384f244bb3c8..1ab0b95ea404d 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/node/mapRootAbsolutePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderNoOutdir/node/mapRootAbsolutePathMixedSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
index c5294bdb084ec..f2a9aeb56aa97 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
index c5294bdb084ec..f2a9aeb56aa97 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
index baab17cf2d64f..c6b34436561dd 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
index baab17cf2d64f..c6b34436561dd 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 124c90dc1d738..5e94306523fd3 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -13,6 +13,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 124c90dc1d738..5e94306523fd3 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -13,6 +13,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/amd/mapRootAbsolutePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/amd/mapRootAbsolutePathModuleMultifolderNoOutdir.json
index f41bf69a9fd9d..09ecf27ea6905 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/amd/mapRootAbsolutePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/amd/mapRootAbsolutePathModuleMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/node/mapRootAbsolutePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/node/mapRootAbsolutePathModuleMultifolderNoOutdir.json
index f41bf69a9fd9d..09ecf27ea6905 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/node/mapRootAbsolutePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderNoOutdir/node/mapRootAbsolutePathModuleMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
index a23115404e9b2..344393c631cc7 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
index a23115404e9b2..344393c631cc7 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
index 826fe0c8c8580..cd4835bbf7f51 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
index ca3367781afb6..9a0e4f121725f 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/mapRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/amd/mapRootAbsolutePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/amd/mapRootAbsolutePathModuleSimpleNoOutdir.json
index 7a14180cf664f..34768bd676dc2 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/amd/mapRootAbsolutePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/amd/mapRootAbsolutePathModuleSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/node/mapRootAbsolutePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/node/mapRootAbsolutePathModuleSimpleNoOutdir.json
index 7a14180cf664f..34768bd676dc2 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/node/mapRootAbsolutePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleNoOutdir/node/mapRootAbsolutePathModuleSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
index 63f891de131d6..657ba7585fc90 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
index 63f891de131d6..657ba7585fc90 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json
index 87354fd283c01..60f07373d3144 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/node/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/node/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json
index bc140562415c7..450277c7af270 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/node/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSimpleSpecifyOutputFile/node/mapRootAbsolutePathModuleSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/amd/mapRootAbsolutePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/amd/mapRootAbsolutePathModuleSubfolderNoOutdir.json
index 05928b51d904a..eadb8fec9b931 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/amd/mapRootAbsolutePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/amd/mapRootAbsolutePathModuleSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/node/mapRootAbsolutePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/node/mapRootAbsolutePathModuleSubfolderNoOutdir.json
index 05928b51d904a..eadb8fec9b931 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/node/mapRootAbsolutePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderNoOutdir/node/mapRootAbsolutePathModuleSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
index 65644350de869..864c4119bb625 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
index 65644350de869..864c4119bb625 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
index af131044b52bd..a54ef73304011 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
index 54a4040be8b03..928272566aadb 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/mapRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/amd/mapRootAbsolutePathMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/amd/mapRootAbsolutePathMultifolderNoOutdir.json
index a0415bdf3bbe8..1b941103759fb 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/amd/mapRootAbsolutePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/amd/mapRootAbsolutePathMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/node/mapRootAbsolutePathMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/node/mapRootAbsolutePathMultifolderNoOutdir.json
index a0415bdf3bbe8..1b941103759fb 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/node/mapRootAbsolutePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderNoOutdir/node/mapRootAbsolutePathMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json
index 18cb305466ba9..027ddf5273957 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json
index 18cb305466ba9..027ddf5273957 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputDirectory/node/mapRootAbsolutePathMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathMultifolderSpecifyOutputFile.json
index 4c161690a098e..bc11e112cf4b9 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/amd/mapRootAbsolutePathMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/node/mapRootAbsolutePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/node/mapRootAbsolutePathMultifolderSpecifyOutputFile.json
index 4c161690a098e..bc11e112cf4b9 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/node/mapRootAbsolutePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathMultifolderSpecifyOutputFile/node/mapRootAbsolutePathMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/amd/mapRootAbsolutePathSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/amd/mapRootAbsolutePathSimpleNoOutdir.json
index 904f0562dbb72..0de76b2a8a462 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/amd/mapRootAbsolutePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/amd/mapRootAbsolutePathSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/node/mapRootAbsolutePathSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/node/mapRootAbsolutePathSimpleNoOutdir.json
index 904f0562dbb72..0de76b2a8a462 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/node/mapRootAbsolutePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSimpleNoOutdir/node/mapRootAbsolutePathSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json
index 49698d06edf35..29953e63de0f7 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/amd/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json
index 49698d06edf35..29953e63de0f7 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputDirectory/node/mapRootAbsolutePathSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/amd/mapRootAbsolutePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/amd/mapRootAbsolutePathSimpleSpecifyOutputFile.json
index 40be449684dcc..33c73ff1feb61 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/amd/mapRootAbsolutePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/amd/mapRootAbsolutePathSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/node/mapRootAbsolutePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/node/mapRootAbsolutePathSimpleSpecifyOutputFile.json
index 40be449684dcc..33c73ff1feb61 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/node/mapRootAbsolutePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSimpleSpecifyOutputFile/node/mapRootAbsolutePathSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/amd/mapRootAbsolutePathSingleFileNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/amd/mapRootAbsolutePathSingleFileNoOutdir.json
index 121790c17dfdf..e653e2ca60cde 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/amd/mapRootAbsolutePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/amd/mapRootAbsolutePathSingleFileNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/node/mapRootAbsolutePathSingleFileNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/node/mapRootAbsolutePathSingleFileNoOutdir.json
index 121790c17dfdf..e653e2ca60cde 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/node/mapRootAbsolutePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileNoOutdir/node/mapRootAbsolutePathSingleFileNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json
index 7cf1db1d5ee08..841f6a369b2e3 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/node/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/node/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json
index 7cf1db1d5ee08..841f6a369b2e3 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/node/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputDirectory/node/mapRootAbsolutePathSingleFileSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/amd/mapRootAbsolutePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/amd/mapRootAbsolutePathSingleFileSpecifyOutputFile.json
index f2cf449c4b0c8..818e5df89fdeb 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/amd/mapRootAbsolutePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/amd/mapRootAbsolutePathSingleFileSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/node/mapRootAbsolutePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/node/mapRootAbsolutePathSingleFileSpecifyOutputFile.json
index f2cf449c4b0c8..818e5df89fdeb 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/node/mapRootAbsolutePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSingleFileSpecifyOutputFile/node/mapRootAbsolutePathSingleFileSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/amd/mapRootAbsolutePathSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/amd/mapRootAbsolutePathSubfolderNoOutdir.json
index 141417a89f563..148b2606c16d5 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/amd/mapRootAbsolutePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/amd/mapRootAbsolutePathSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/node/mapRootAbsolutePathSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/node/mapRootAbsolutePathSubfolderNoOutdir.json
index 141417a89f563..148b2606c16d5 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/node/mapRootAbsolutePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderNoOutdir/node/mapRootAbsolutePathSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json
index 03fde77d639a5..299c72fa3c9ee 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json
index 03fde77d639a5..299c72fa3c9ee 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputDirectory/node/mapRootAbsolutePathSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathSubfolderSpecifyOutputFile.json
index 3cc9bcaac0138..701d236d0c921 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/amd/mapRootAbsolutePathSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/node/mapRootAbsolutePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/node/mapRootAbsolutePathSubfolderSpecifyOutputFile.json
index 3cc9bcaac0138..701d236d0c921 100644
--- a/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/node/mapRootAbsolutePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootAbsolutePathSubfolderSpecifyOutputFile/node/mapRootAbsolutePathSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveMapRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/amd/mapRootRelativePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/amd/mapRootRelativePathMixedSubfolderNoOutdir.json
index 97ebbc9c2b65b..5ed8625f1874e 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/amd/mapRootRelativePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/amd/mapRootRelativePathMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/node/mapRootRelativePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/node/mapRootRelativePathMixedSubfolderNoOutdir.json
index 97ebbc9c2b65b..5ed8625f1874e 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/node/mapRootRelativePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderNoOutdir/node/mapRootRelativePathMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
index 15de8b0aa60b9..2936add88e5d8 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
index 15de8b0aa60b9..2936add88e5d8 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json
index 34f6378876b74..963ddc6cf78d3 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/node/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/node/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json
index 34f6378876b74..963ddc6cf78d3 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/node/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFile/node/mapRootRelativePathMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index f633f198cd485..8160e95c62e57 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index f633f198cd485..8160e95c62e57 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/mapRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/amd/mapRootRelativePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/amd/mapRootRelativePathModuleMultifolderNoOutdir.json
index 4750a9a36235f..c4ce3aa0f7472 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/amd/mapRootRelativePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/amd/mapRootRelativePathModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/node/mapRootRelativePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/node/mapRootRelativePathModuleMultifolderNoOutdir.json
index 4750a9a36235f..c4ce3aa0f7472 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/node/mapRootRelativePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderNoOutdir/node/mapRootRelativePathModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
index 7753040f5178f..5503023d7b76a 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
index 7753040f5178f..5503023d7b76a 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/mapRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/amd/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/amd/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json
index ea4674bfdc6cb..8663fb676df13 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/amd/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/amd/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/node/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/node/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json
index 8a67a80866d3f..5ae718014ef7b 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/node/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleMultifolderSpecifyOutputFile/node/mapRootRelativePathModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/amd/mapRootRelativePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/amd/mapRootRelativePathModuleSimpleNoOutdir.json
index 1818ad4b8e08c..5fad1b73f5580 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/amd/mapRootRelativePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/amd/mapRootRelativePathModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/node/mapRootRelativePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/node/mapRootRelativePathModuleSimpleNoOutdir.json
index 1818ad4b8e08c..5fad1b73f5580 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/node/mapRootRelativePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleNoOutdir/node/mapRootRelativePathModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json
index 5673ec56f85a3..be94d728d42e3 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/node/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/node/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json
index 5673ec56f85a3..be94d728d42e3 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/node/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputDirectory/node/mapRootRelativePathModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/amd/mapRootRelativePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/amd/mapRootRelativePathModuleSimpleSpecifyOutputFile.json
index 2e3765fafdcf5..76eeb95324c93 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/amd/mapRootRelativePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/amd/mapRootRelativePathModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/node/mapRootRelativePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/node/mapRootRelativePathModuleSimpleSpecifyOutputFile.json
index cfbf2545a2cdd..30faceeb43d15 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/node/mapRootRelativePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSimpleSpecifyOutputFile/node/mapRootRelativePathModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/amd/mapRootRelativePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/amd/mapRootRelativePathModuleSubfolderNoOutdir.json
index 645bbf4bd7306..06268f9e62544 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/amd/mapRootRelativePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/amd/mapRootRelativePathModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/node/mapRootRelativePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/node/mapRootRelativePathModuleSubfolderNoOutdir.json
index 645bbf4bd7306..06268f9e62544 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/node/mapRootRelativePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderNoOutdir/node/mapRootRelativePathModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
index a5768712dfc0f..18d69858a1afd 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
index a5768712dfc0f..18d69858a1afd 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/mapRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/amd/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/amd/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json
index 6249ba6684874..eaaf066b6059a 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/amd/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/amd/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/node/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/node/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json
index 2ef8fc7db4aa9..3f9c7b37c9000 100644
--- a/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/node/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathModuleSubfolderSpecifyOutputFile/node/mapRootRelativePathModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/amd/mapRootRelativePathMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/amd/mapRootRelativePathMultifolderNoOutdir.json
index f8ba39eb24761..fcff52e05e85a 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/amd/mapRootRelativePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/amd/mapRootRelativePathMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/node/mapRootRelativePathMultifolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/node/mapRootRelativePathMultifolderNoOutdir.json
index f8ba39eb24761..fcff52e05e85a 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/node/mapRootRelativePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMultifolderNoOutdir/node/mapRootRelativePathMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathMultifolderSpecifyOutputDirectory.json
index 0c46f62d41d26..49302ac140810 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/amd/mapRootRelativePathMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/node/mapRootRelativePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/node/mapRootRelativePathMultifolderSpecifyOutputDirectory.json
index 0c46f62d41d26..49302ac140810 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/node/mapRootRelativePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputDirectory/node/mapRootRelativePathMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/amd/mapRootRelativePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/amd/mapRootRelativePathMultifolderSpecifyOutputFile.json
index a855ef1f35c4c..f51c8f0a91251 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/amd/mapRootRelativePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/amd/mapRootRelativePathMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/node/mapRootRelativePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/node/mapRootRelativePathMultifolderSpecifyOutputFile.json
index a855ef1f35c4c..f51c8f0a91251 100644
--- a/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/node/mapRootRelativePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathMultifolderSpecifyOutputFile/node/mapRootRelativePathMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/amd/mapRootRelativePathSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/amd/mapRootRelativePathSimpleNoOutdir.json
index 3d13b8aa7bf7d..778f5091ba142 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/amd/mapRootRelativePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/amd/mapRootRelativePathSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/node/mapRootRelativePathSimpleNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/node/mapRootRelativePathSimpleNoOutdir.json
index 3d13b8aa7bf7d..778f5091ba142 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/node/mapRootRelativePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSimpleNoOutdir/node/mapRootRelativePathSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/amd/mapRootRelativePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/amd/mapRootRelativePathSimpleSpecifyOutputDirectory.json
index aa394560b4738..ffe4d88702961 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/amd/mapRootRelativePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/amd/mapRootRelativePathSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/node/mapRootRelativePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/node/mapRootRelativePathSimpleSpecifyOutputDirectory.json
index aa394560b4738..ffe4d88702961 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/node/mapRootRelativePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputDirectory/node/mapRootRelativePathSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/amd/mapRootRelativePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/amd/mapRootRelativePathSimpleSpecifyOutputFile.json
index 95fa386fab55a..5ca065cdf0ee6 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/amd/mapRootRelativePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/amd/mapRootRelativePathSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/node/mapRootRelativePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/node/mapRootRelativePathSimpleSpecifyOutputFile.json
index 95fa386fab55a..5ca065cdf0ee6 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/node/mapRootRelativePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSimpleSpecifyOutputFile/node/mapRootRelativePathSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/amd/mapRootRelativePathSingleFileNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/amd/mapRootRelativePathSingleFileNoOutdir.json
index 48c0a2cbe1944..a107330d658d9 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/amd/mapRootRelativePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/amd/mapRootRelativePathSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/node/mapRootRelativePathSingleFileNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/node/mapRootRelativePathSingleFileNoOutdir.json
index 48c0a2cbe1944..a107330d658d9 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/node/mapRootRelativePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSingleFileNoOutdir/node/mapRootRelativePathSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/amd/mapRootRelativePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/amd/mapRootRelativePathSingleFileSpecifyOutputDirectory.json
index cca2801a33176..544fddd1aea03 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/amd/mapRootRelativePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/amd/mapRootRelativePathSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/node/mapRootRelativePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/node/mapRootRelativePathSingleFileSpecifyOutputDirectory.json
index cca2801a33176..544fddd1aea03 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/node/mapRootRelativePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputDirectory/node/mapRootRelativePathSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/amd/mapRootRelativePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/amd/mapRootRelativePathSingleFileSpecifyOutputFile.json
index 9e17526313097..eabd30d4b7aa6 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/amd/mapRootRelativePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/amd/mapRootRelativePathSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/node/mapRootRelativePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/node/mapRootRelativePathSingleFileSpecifyOutputFile.json
index 9e17526313097..eabd30d4b7aa6 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/node/mapRootRelativePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSingleFileSpecifyOutputFile/node/mapRootRelativePathSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/amd/mapRootRelativePathSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/amd/mapRootRelativePathSubfolderNoOutdir.json
index 436f1af69b76c..e046c89c6fd7e 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/amd/mapRootRelativePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/amd/mapRootRelativePathSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/node/mapRootRelativePathSubfolderNoOutdir.json b/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/node/mapRootRelativePathSubfolderNoOutdir.json
index 436f1af69b76c..e046c89c6fd7e 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/node/mapRootRelativePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSubfolderNoOutdir/node/mapRootRelativePathSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathSubfolderSpecifyOutputDirectory.json
index b7aa1ac6c3bf2..7a760aeed6e42 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/amd/mapRootRelativePathSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/node/mapRootRelativePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/node/mapRootRelativePathSubfolderSpecifyOutputDirectory.json
index b7aa1ac6c3bf2..7a760aeed6e42 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/node/mapRootRelativePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputDirectory/node/mapRootRelativePathSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/amd/mapRootRelativePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/amd/mapRootRelativePathSubfolderSpecifyOutputFile.json
index cbf9e9113fcfd..43907c826b3f3 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/amd/mapRootRelativePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/amd/mapRootRelativePathSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/node/mapRootRelativePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/node/mapRootRelativePathSubfolderSpecifyOutputFile.json
index cbf9e9113fcfd..43907c826b3f3 100644
--- a/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/node/mapRootRelativePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/mapRootRelativePathSubfolderSpecifyOutputFile/node/mapRootRelativePathSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/amd/mapRootSourceRootWithNoSourceMapOption.json b/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/amd/mapRootSourceRootWithNoSourceMapOption.json
index 7ed8aefbc0cdd..3626df6e7b3ce 100644
--- a/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/amd/mapRootSourceRootWithNoSourceMapOption.json
+++ b/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/amd/mapRootSourceRootWithNoSourceMapOption.json
@@ -8,6 +8,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/node/mapRootSourceRootWithNoSourceMapOption.json b/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/node/mapRootSourceRootWithNoSourceMapOption.json
index 7ed8aefbc0cdd..3626df6e7b3ce 100644
--- a/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/node/mapRootSourceRootWithNoSourceMapOption.json
+++ b/tests/baselines/reference/project/mapRootSourceRootWithNoSourceMapOption/node/mapRootSourceRootWithNoSourceMapOption.json
@@ -8,6 +8,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootWithNoSourceMapOption/amd/mapRootWithNoSourceMapOption.json b/tests/baselines/reference/project/mapRootWithNoSourceMapOption/amd/mapRootWithNoSourceMapOption.json
index aacd7addc7826..4295658406485 100644
--- a/tests/baselines/reference/project/mapRootWithNoSourceMapOption/amd/mapRootWithNoSourceMapOption.json
+++ b/tests/baselines/reference/project/mapRootWithNoSourceMapOption/amd/mapRootWithNoSourceMapOption.json
@@ -7,6 +7,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/mapRootWithNoSourceMapOption/node/mapRootWithNoSourceMapOption.json b/tests/baselines/reference/project/mapRootWithNoSourceMapOption/node/mapRootWithNoSourceMapOption.json
index aacd7addc7826..4295658406485 100644
--- a/tests/baselines/reference/project/mapRootWithNoSourceMapOption/node/mapRootWithNoSourceMapOption.json
+++ b/tests/baselines/reference/project/mapRootWithNoSourceMapOption/node/mapRootWithNoSourceMapOption.json
@@ -7,6 +7,8 @@
     "mapRoot": "../mapFiles",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/amd/maprootUrlMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/amd/maprootUrlMixedSubfolderNoOutdir.json
index cd209523da883..28d5d8a562868 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/amd/maprootUrlMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/amd/maprootUrlMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/node/maprootUrlMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/node/maprootUrlMixedSubfolderNoOutdir.json
index cd209523da883..28d5d8a562868 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/node/maprootUrlMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderNoOutdir/node/maprootUrlMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputDirectory.json
index 730096ddc9894..ff578111c3dc9 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputDirectory.json
index 730096ddc9894..ff578111c3dc9 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlMixedSubfolderSpecifyOutputFile.json
index 3eb104497982a..edb5ba808514d 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlMixedSubfolderSpecifyOutputFile.json
index 3eb104497982a..edb5ba808514d 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 59f5abc1a39d1..7b967675abfda 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 59f5abc1a39d1..7b967675abfda 100644
--- a/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/amd/maprootUrlModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/amd/maprootUrlModuleMultifolderNoOutdir.json
index be8aa65e5beca..4ef2816c00208 100644
--- a/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/amd/maprootUrlModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/amd/maprootUrlModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/node/maprootUrlModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/node/maprootUrlModuleMultifolderNoOutdir.json
index be8aa65e5beca..4ef2816c00208 100644
--- a/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/node/maprootUrlModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlModuleMultifolderNoOutdir/node/maprootUrlModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlModuleMultifolderSpecifyOutputDirectory.json
index d436c0adb20ec..1c707e92c7887 100644
--- a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlModuleMultifolderSpecifyOutputDirectory.json
index d436c0adb20ec..1c707e92c7887 100644
--- a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlModuleMultifolderSpecifyOutputFile.json
index 5defee5d62828..2b1eadcbd1b97 100644
--- a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlModuleMultifolderSpecifyOutputFile.json
index af083f7ecc7ca..999415d5deeae 100644
--- a/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/amd/maprootUrlModuleSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/amd/maprootUrlModuleSimpleNoOutdir.json
index 403b231a829d4..eaf89425dde47 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/amd/maprootUrlModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/amd/maprootUrlModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/node/maprootUrlModuleSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/node/maprootUrlModuleSimpleNoOutdir.json
index 403b231a829d4..eaf89425dde47 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/node/maprootUrlModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSimpleNoOutdir/node/maprootUrlModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlModuleSimpleSpecifyOutputDirectory.json
index ee4185a1a76d2..08a40b7e00fee 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlModuleSimpleSpecifyOutputDirectory.json
index ee4185a1a76d2..08a40b7e00fee 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlModuleSimpleSpecifyOutputFile.json
index 96dd55ea5c857..070128f11b576 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlModuleSimpleSpecifyOutputFile.json
index ea25729e572d9..087d1c667bb9d 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/amd/maprootUrlModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/amd/maprootUrlModuleSubfolderNoOutdir.json
index 9287d0f7a571e..8fc1d8cedb3a6 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/amd/maprootUrlModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/amd/maprootUrlModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/node/maprootUrlModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/node/maprootUrlModuleSubfolderNoOutdir.json
index 9287d0f7a571e..8fc1d8cedb3a6 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/node/maprootUrlModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSubfolderNoOutdir/node/maprootUrlModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlModuleSubfolderSpecifyOutputDirectory.json
index fcda65ee6c200..ff4cef3be13f8 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlModuleSubfolderSpecifyOutputDirectory.json
index fcda65ee6c200..ff4cef3be13f8 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlModuleSubfolderSpecifyOutputFile.json
index 66fabb7816f02..24f628f187d86 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlModuleSubfolderSpecifyOutputFile.json
index a9e34f9b6eed2..bc6aa594d3842 100644
--- a/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/amd/maprootUrlMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/amd/maprootUrlMultifolderNoOutdir.json
index 9206e89c33b3e..37ab432cedcd3 100644
--- a/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/amd/maprootUrlMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/amd/maprootUrlMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/node/maprootUrlMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/node/maprootUrlMultifolderNoOutdir.json
index 9206e89c33b3e..37ab432cedcd3 100644
--- a/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/node/maprootUrlMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlMultifolderNoOutdir/node/maprootUrlMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlMultifolderSpecifyOutputDirectory.json
index 64e3e87e16dc6..0f75f10c07243 100644
--- a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlMultifolderSpecifyOutputDirectory.json
index 64e3e87e16dc6..0f75f10c07243 100644
--- a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/amd/maprootUrlMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/amd/maprootUrlMultifolderSpecifyOutputFile.json
index 11eb4732184b0..917456b3ca031 100644
--- a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/amd/maprootUrlMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/amd/maprootUrlMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/node/maprootUrlMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/node/maprootUrlMultifolderSpecifyOutputFile.json
index 11eb4732184b0..917456b3ca031 100644
--- a/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/node/maprootUrlMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlMultifolderSpecifyOutputFile/node/maprootUrlMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/amd/maprootUrlSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/amd/maprootUrlSimpleNoOutdir.json
index ec29bed6aaef8..da40b52a456f5 100644
--- a/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/amd/maprootUrlSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/amd/maprootUrlSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/node/maprootUrlSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/node/maprootUrlSimpleNoOutdir.json
index ec29bed6aaef8..da40b52a456f5 100644
--- a/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/node/maprootUrlSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlSimpleNoOutdir/node/maprootUrlSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlSimpleSpecifyOutputDirectory.json
index 3594ddff232ab..f49e46054f146 100644
--- a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/node/maprootUrlSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/node/maprootUrlSimpleSpecifyOutputDirectory.json
index 3594ddff232ab..f49e46054f146 100644
--- a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/node/maprootUrlSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputDirectory/node/maprootUrlSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/amd/maprootUrlSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/amd/maprootUrlSimpleSpecifyOutputFile.json
index e8222b1929877..5c96ab2dc0bd2 100644
--- a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/amd/maprootUrlSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/amd/maprootUrlSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/node/maprootUrlSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/node/maprootUrlSimpleSpecifyOutputFile.json
index e8222b1929877..5c96ab2dc0bd2 100644
--- a/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/node/maprootUrlSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlSimpleSpecifyOutputFile/node/maprootUrlSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/amd/maprootUrlSingleFileNoOutdir.json b/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/amd/maprootUrlSingleFileNoOutdir.json
index 93141edd251cb..c2b617c6c1977 100644
--- a/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/amd/maprootUrlSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/amd/maprootUrlSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/node/maprootUrlSingleFileNoOutdir.json b/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/node/maprootUrlSingleFileNoOutdir.json
index 93141edd251cb..c2b617c6c1977 100644
--- a/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/node/maprootUrlSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlSingleFileNoOutdir/node/maprootUrlSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlSingleFileSpecifyOutputDirectory.json
index 6e9c187818560..582854bce24c6 100644
--- a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlSingleFileSpecifyOutputDirectory.json
index 6e9c187818560..582854bce24c6 100644
--- a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/amd/maprootUrlSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/amd/maprootUrlSingleFileSpecifyOutputFile.json
index 0cf5124ba2555..448ead4532ffe 100644
--- a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/amd/maprootUrlSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/amd/maprootUrlSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/node/maprootUrlSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/node/maprootUrlSingleFileSpecifyOutputFile.json
index 0cf5124ba2555..448ead4532ffe 100644
--- a/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/node/maprootUrlSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlSingleFileSpecifyOutputFile/node/maprootUrlSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/amd/maprootUrlSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/amd/maprootUrlSubfolderNoOutdir.json
index b6d0ce41bc122..7e13b1db80f40 100644
--- a/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/amd/maprootUrlSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/amd/maprootUrlSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/node/maprootUrlSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/node/maprootUrlSubfolderNoOutdir.json
index b6d0ce41bc122..7e13b1db80f40 100644
--- a/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/node/maprootUrlSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlSubfolderNoOutdir/node/maprootUrlSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlSubfolderSpecifyOutputDirectory.json
index fbe7771b277fe..f00776700f7f0 100644
--- a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlSubfolderSpecifyOutputDirectory.json
index fbe7771b277fe..f00776700f7f0 100644
--- a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/amd/maprootUrlSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/amd/maprootUrlSubfolderSpecifyOutputFile.json
index 655a40b3393a0..70776c8580588 100644
--- a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/amd/maprootUrlSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/amd/maprootUrlSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/node/maprootUrlSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/node/maprootUrlSubfolderSpecifyOutputFile.json
index 655a40b3393a0..70776c8580588 100644
--- a/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/node/maprootUrlSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlSubfolderSpecifyOutputFile/node/maprootUrlSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "mapRoot": "http://www.typescriptlang.org/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/amd/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/amd/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json
index d1a93e29b2023..e1c0360c2a4ad 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/amd/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/amd/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/node/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/node/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json
index d1a93e29b2023..e1c0360c2a4ad 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/node/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderNoOutdir/node/maprootUrlsourcerootUrlMixedSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
index 6c12235cbc708..90a87d8a5064b 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
index 6c12235cbc708..90a87d8a5064b 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json
index ae21979e6c928..71b1238bba5cf 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json
index ae21979e6c928..71b1238bba5cf 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index fe8bf8f3296ae..9aeb2b6c76772 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -13,6 +13,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index fe8bf8f3296ae..9aeb2b6c76772 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/maprootUrlsourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -13,6 +13,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/amd/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/amd/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json
index 9c99beb9c8e6f..d3df7e3693c9e 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/amd/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/amd/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/node/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/node/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json
index 9c99beb9c8e6f..d3df7e3693c9e 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/node/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderNoOutdir/node/maprootUrlsourcerootUrlModuleMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
index 799afd4ed2099..93884030e88e6 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
index 799afd4ed2099..93884030e88e6 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json
index a8bee04af26cd..b074aae66cccd 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json
index 0ae2591d19e89..500277e1680bf 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/amd/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/amd/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json
index 38b48f7d1201e..3e32619902a83 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/amd/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/amd/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/node/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/node/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json
index 38b48f7d1201e..3e32619902a83 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/node/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleNoOutdir/node/maprootUrlsourcerootUrlModuleSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json
index fc399923e4016..6464e9f189f1b 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json
index fc399923e4016..6464e9f189f1b 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json
index 23aa5d0d68b24..a4a700b6f7659 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json
index 2c8735d84eb72..a1478f4c6f089 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/amd/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/amd/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json
index 79000bbe30441..93b2d0ff36805 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/amd/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/amd/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/node/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/node/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json
index 79000bbe30441..93b2d0ff36805 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/node/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderNoOutdir/node/maprootUrlsourcerootUrlModuleSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
index c38278cadf766..f234ff79bb7be 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
index c38278cadf766..f234ff79bb7be 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json
index 69a9afefdb100..cd461d9385fa7 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json
index ab7fb6cbeb256..5b2dceeded387 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlModuleSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/amd/maprootUrlsourcerootUrlMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/amd/maprootUrlsourcerootUrlMultifolderNoOutdir.json
index e938716c5b72c..efc6778bfc8bd 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/amd/maprootUrlsourcerootUrlMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/amd/maprootUrlsourcerootUrlMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/node/maprootUrlsourcerootUrlMultifolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/node/maprootUrlsourcerootUrlMultifolderNoOutdir.json
index e938716c5b72c..efc6778bfc8bd 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/node/maprootUrlsourcerootUrlMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderNoOutdir/node/maprootUrlsourcerootUrlMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json
index 868b9d088e4da..8c703fa5ccc6d 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json
index 868b9d088e4da..8c703fa5ccc6d 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json
index 72ef4b2964d86..fc3a6893bc4c4 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json
index 72ef4b2964d86..fc3a6893bc4c4 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile/node/maprootUrlsourcerootUrlMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/amd/maprootUrlsourcerootUrlSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/amd/maprootUrlsourcerootUrlSimpleNoOutdir.json
index 7181b5f41704e..458e16811a45f 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/amd/maprootUrlsourcerootUrlSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/amd/maprootUrlsourcerootUrlSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/node/maprootUrlsourcerootUrlSimpleNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/node/maprootUrlsourcerootUrlSimpleNoOutdir.json
index 7181b5f41704e..458e16811a45f 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/node/maprootUrlsourcerootUrlSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleNoOutdir/node/maprootUrlsourcerootUrlSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json
index faec1b8b44b30..d4302e162b5d7 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json
index faec1b8b44b30..d4302e162b5d7 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json
index c004c0c4170be..9c64212b2d218 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/amd/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json
index c004c0c4170be..9c64212b2d218 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSimpleSpecifyOutputFile/node/maprootUrlsourcerootUrlSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/amd/maprootUrlsourcerootUrlSingleFileNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/amd/maprootUrlsourcerootUrlSingleFileNoOutdir.json
index 864a3a76a7c01..a6e7c99a61142 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/amd/maprootUrlsourcerootUrlSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/amd/maprootUrlsourcerootUrlSingleFileNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/node/maprootUrlsourcerootUrlSingleFileNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/node/maprootUrlsourcerootUrlSingleFileNoOutdir.json
index 864a3a76a7c01..a6e7c99a61142 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/node/maprootUrlsourcerootUrlSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileNoOutdir/node/maprootUrlsourcerootUrlSingleFileNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json
index b89098730b5a2..dec6d99743271 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json
index b89098730b5a2..dec6d99743271 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json
index 0b84f81a443cb..35ea35d2b5ce8 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/amd/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json
index 0b84f81a443cb..35ea35d2b5ce8 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile/node/maprootUrlsourcerootUrlSingleFileSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/amd/maprootUrlsourcerootUrlSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/amd/maprootUrlsourcerootUrlSubfolderNoOutdir.json
index 4e6b055540c4e..d0db93b829613 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/amd/maprootUrlsourcerootUrlSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/amd/maprootUrlsourcerootUrlSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/node/maprootUrlsourcerootUrlSubfolderNoOutdir.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/node/maprootUrlsourcerootUrlSubfolderNoOutdir.json
index 4e6b055540c4e..d0db93b829613 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/node/maprootUrlsourcerootUrlSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderNoOutdir/node/maprootUrlsourcerootUrlSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json
index 55d9965341ff1..0b4f7b711a761 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json
index 55d9965341ff1..0b4f7b711a761 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json
index 09af2494defd9..3882ed95cef2a 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/amd/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json
index 09af2494defd9..3882ed95cef2a 100644
--- a/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile/node/maprootUrlsourcerootUrlSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/moduleIdentifier/amd/moduleIdentifier.json b/tests/baselines/reference/project/moduleIdentifier/amd/moduleIdentifier.json
index 6dde0bb16f43e..9e2c8a26469a9 100644
--- a/tests/baselines/reference/project/moduleIdentifier/amd/moduleIdentifier.json
+++ b/tests/baselines/reference/project/moduleIdentifier/amd/moduleIdentifier.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/moduleIdentifier/node/moduleIdentifier.json b/tests/baselines/reference/project/moduleIdentifier/node/moduleIdentifier.json
index 6dde0bb16f43e..9e2c8a26469a9 100644
--- a/tests/baselines/reference/project/moduleIdentifier/node/moduleIdentifier.json
+++ b/tests/baselines/reference/project/moduleIdentifier/node/moduleIdentifier.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/moduleMergingOrdering1/amd/moduleMergingOrdering1.json b/tests/baselines/reference/project/moduleMergingOrdering1/amd/moduleMergingOrdering1.json
index 0485ea8e63363..2f3f35fc0e3a2 100644
--- a/tests/baselines/reference/project/moduleMergingOrdering1/amd/moduleMergingOrdering1.json
+++ b/tests/baselines/reference/project/moduleMergingOrdering1/amd/moduleMergingOrdering1.json
@@ -7,6 +7,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts",
         "b.ts"
     ],
diff --git a/tests/baselines/reference/project/moduleMergingOrdering1/node/moduleMergingOrdering1.json b/tests/baselines/reference/project/moduleMergingOrdering1/node/moduleMergingOrdering1.json
index 0485ea8e63363..2f3f35fc0e3a2 100644
--- a/tests/baselines/reference/project/moduleMergingOrdering1/node/moduleMergingOrdering1.json
+++ b/tests/baselines/reference/project/moduleMergingOrdering1/node/moduleMergingOrdering1.json
@@ -7,6 +7,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts",
         "b.ts"
     ],
diff --git a/tests/baselines/reference/project/moduleMergingOrdering2/amd/moduleMergingOrdering2.json b/tests/baselines/reference/project/moduleMergingOrdering2/amd/moduleMergingOrdering2.json
index 133c445c25715..e41ec5b2faee4 100644
--- a/tests/baselines/reference/project/moduleMergingOrdering2/amd/moduleMergingOrdering2.json
+++ b/tests/baselines/reference/project/moduleMergingOrdering2/amd/moduleMergingOrdering2.json
@@ -7,6 +7,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "b.ts",
         "a.ts"
     ],
diff --git a/tests/baselines/reference/project/moduleMergingOrdering2/node/moduleMergingOrdering2.json b/tests/baselines/reference/project/moduleMergingOrdering2/node/moduleMergingOrdering2.json
index 133c445c25715..e41ec5b2faee4 100644
--- a/tests/baselines/reference/project/moduleMergingOrdering2/node/moduleMergingOrdering2.json
+++ b/tests/baselines/reference/project/moduleMergingOrdering2/node/moduleMergingOrdering2.json
@@ -7,6 +7,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "b.ts",
         "a.ts"
     ],
diff --git a/tests/baselines/reference/project/multipleLevelsModuleResolution/amd/multipleLevelsModuleResolution.json b/tests/baselines/reference/project/multipleLevelsModuleResolution/amd/multipleLevelsModuleResolution.json
index 891f43fd66189..61f9d23a2c134 100644
--- a/tests/baselines/reference/project/multipleLevelsModuleResolution/amd/multipleLevelsModuleResolution.json
+++ b/tests/baselines/reference/project/multipleLevelsModuleResolution/amd/multipleLevelsModuleResolution.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "A/A.ts",
         "A/AA/AA.ts",
         "B/B.ts",
diff --git a/tests/baselines/reference/project/multipleLevelsModuleResolution/node/multipleLevelsModuleResolution.json b/tests/baselines/reference/project/multipleLevelsModuleResolution/node/multipleLevelsModuleResolution.json
index 891f43fd66189..61f9d23a2c134 100644
--- a/tests/baselines/reference/project/multipleLevelsModuleResolution/node/multipleLevelsModuleResolution.json
+++ b/tests/baselines/reference/project/multipleLevelsModuleResolution/node/multipleLevelsModuleResolution.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "A/A.ts",
         "A/AA/AA.ts",
         "B/B.ts",
diff --git a/tests/baselines/reference/project/nestedDeclare/amd/nestedDeclare.json b/tests/baselines/reference/project/nestedDeclare/amd/nestedDeclare.json
index 182f0d3cf3ce6..541f0a349b225 100644
--- a/tests/baselines/reference/project/nestedDeclare/amd/nestedDeclare.json
+++ b/tests/baselines/reference/project/nestedDeclare/amd/nestedDeclare.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "consume.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/nestedDeclare/node/nestedDeclare.json b/tests/baselines/reference/project/nestedDeclare/node/nestedDeclare.json
index 182f0d3cf3ce6..541f0a349b225 100644
--- a/tests/baselines/reference/project/nestedDeclare/node/nestedDeclare.json
+++ b/tests/baselines/reference/project/nestedDeclare/node/nestedDeclare.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "consume.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/nestedLocalModuleSimpleCase/amd/nestedLocalModuleSimpleCase.json b/tests/baselines/reference/project/nestedLocalModuleSimpleCase/amd/nestedLocalModuleSimpleCase.json
index 71b3fd37ad0fb..b3b4fdca8fbfc 100644
--- a/tests/baselines/reference/project/nestedLocalModuleSimpleCase/amd/nestedLocalModuleSimpleCase.json
+++ b/tests/baselines/reference/project/nestedLocalModuleSimpleCase/amd/nestedLocalModuleSimpleCase.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test1.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/nestedLocalModuleSimpleCase/node/nestedLocalModuleSimpleCase.json b/tests/baselines/reference/project/nestedLocalModuleSimpleCase/node/nestedLocalModuleSimpleCase.json
index 71b3fd37ad0fb..b3b4fdca8fbfc 100644
--- a/tests/baselines/reference/project/nestedLocalModuleSimpleCase/node/nestedLocalModuleSimpleCase.json
+++ b/tests/baselines/reference/project/nestedLocalModuleSimpleCase/node/nestedLocalModuleSimpleCase.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test1.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/amd/nestedLocalModuleWithRecursiveTypecheck.json b/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/amd/nestedLocalModuleWithRecursiveTypecheck.json
index 2449e3dd911a6..ec16a02ad3b1c 100644
--- a/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/amd/nestedLocalModuleWithRecursiveTypecheck.json
+++ b/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/amd/nestedLocalModuleWithRecursiveTypecheck.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test1.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/node/nestedLocalModuleWithRecursiveTypecheck.json b/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/node/nestedLocalModuleWithRecursiveTypecheck.json
index 2449e3dd911a6..ec16a02ad3b1c 100644
--- a/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/node/nestedLocalModuleWithRecursiveTypecheck.json
+++ b/tests/baselines/reference/project/nestedLocalModuleWithRecursiveTypecheck/node/nestedLocalModuleWithRecursiveTypecheck.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test1.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/nestedReferenceTags/amd/nestedReferenceTags.json b/tests/baselines/reference/project/nestedReferenceTags/amd/nestedReferenceTags.json
index 72c54ff8f4723..e87c961036fc6 100644
--- a/tests/baselines/reference/project/nestedReferenceTags/amd/nestedReferenceTags.json
+++ b/tests/baselines/reference/project/nestedReferenceTags/amd/nestedReferenceTags.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "lib/classA.ts",
         "lib/classB.ts",
         "main.ts"
diff --git a/tests/baselines/reference/project/nestedReferenceTags/node/nestedReferenceTags.json b/tests/baselines/reference/project/nestedReferenceTags/node/nestedReferenceTags.json
index 72c54ff8f4723..e87c961036fc6 100644
--- a/tests/baselines/reference/project/nestedReferenceTags/node/nestedReferenceTags.json
+++ b/tests/baselines/reference/project/nestedReferenceTags/node/nestedReferenceTags.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "lib/classA.ts",
         "lib/classB.ts",
         "main.ts"
diff --git a/tests/baselines/reference/project/noProjectOptionAndInputFiles/amd/noProjectOptionAndInputFiles.json b/tests/baselines/reference/project/noProjectOptionAndInputFiles/amd/noProjectOptionAndInputFiles.json
index 2dbfdb4232f63..315e23b3cf25e 100644
--- a/tests/baselines/reference/project/noProjectOptionAndInputFiles/amd/noProjectOptionAndInputFiles.json
+++ b/tests/baselines/reference/project/noProjectOptionAndInputFiles/amd/noProjectOptionAndInputFiles.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/noProjectOptionAndInputFiles/node/noProjectOptionAndInputFiles.json b/tests/baselines/reference/project/noProjectOptionAndInputFiles/node/noProjectOptionAndInputFiles.json
index 2dbfdb4232f63..315e23b3cf25e 100644
--- a/tests/baselines/reference/project/noProjectOptionAndInputFiles/node/noProjectOptionAndInputFiles.json
+++ b/tests/baselines/reference/project/noProjectOptionAndInputFiles/node/noProjectOptionAndInputFiles.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/nodeModulesImportHigher/amd/nodeModulesImportHigher.json b/tests/baselines/reference/project/nodeModulesImportHigher/amd/nodeModulesImportHigher.json
index 43f2091bdec4b..48d51bb026d37 100644
--- a/tests/baselines/reference/project/nodeModulesImportHigher/amd/nodeModulesImportHigher.json
+++ b/tests/baselines/reference/project/nodeModulesImportHigher/amd/nodeModulesImportHigher.json
@@ -7,6 +7,8 @@
     "project": "importHigher",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "importHigher/node_modules/m2/entry.js",
         "importHigher/node_modules/m1/index.js",
         "importHigher/node_modules/m2/node_modules/m3/index.js",
diff --git a/tests/baselines/reference/project/nodeModulesImportHigher/node/nodeModulesImportHigher.json b/tests/baselines/reference/project/nodeModulesImportHigher/node/nodeModulesImportHigher.json
index 43f2091bdec4b..48d51bb026d37 100644
--- a/tests/baselines/reference/project/nodeModulesImportHigher/node/nodeModulesImportHigher.json
+++ b/tests/baselines/reference/project/nodeModulesImportHigher/node/nodeModulesImportHigher.json
@@ -7,6 +7,8 @@
     "project": "importHigher",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "importHigher/node_modules/m2/entry.js",
         "importHigher/node_modules/m1/index.js",
         "importHigher/node_modules/m2/node_modules/m3/index.js",
diff --git a/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/amd/nodeModulesMaxDepthExceeded.json b/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/amd/nodeModulesMaxDepthExceeded.json
index c3dcae4dcd5e2..cf20924641b75 100644
--- a/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/amd/nodeModulesMaxDepthExceeded.json
+++ b/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/amd/nodeModulesMaxDepthExceeded.json
@@ -7,6 +7,8 @@
     "project": "maxDepthExceeded",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "maxDepthExceeded/node_modules/m1/index.js",
         "maxDepthExceeded/root.ts",
         "maxDepthExceeded/node_modules/m2/entry.js",
diff --git a/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/node/nodeModulesMaxDepthExceeded.json b/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/node/nodeModulesMaxDepthExceeded.json
index c3dcae4dcd5e2..cf20924641b75 100644
--- a/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/node/nodeModulesMaxDepthExceeded.json
+++ b/tests/baselines/reference/project/nodeModulesMaxDepthExceeded/node/nodeModulesMaxDepthExceeded.json
@@ -7,6 +7,8 @@
     "project": "maxDepthExceeded",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "maxDepthExceeded/node_modules/m1/index.js",
         "maxDepthExceeded/root.ts",
         "maxDepthExceeded/node_modules/m2/entry.js",
diff --git a/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/amd/nodeModulesMaxDepthIncreased.json b/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/amd/nodeModulesMaxDepthIncreased.json
index 9973c7d3c050c..230e8e959ece7 100644
--- a/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/amd/nodeModulesMaxDepthIncreased.json
+++ b/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/amd/nodeModulesMaxDepthIncreased.json
@@ -7,6 +7,8 @@
     "project": "maxDepthIncreased",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "maxDepthIncreased/node_modules/m2/node_modules/m3/index.js",
         "maxDepthIncreased/node_modules/m2/entry.js",
         "maxDepthIncreased/node_modules/m1/index.js",
diff --git a/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/node/nodeModulesMaxDepthIncreased.json b/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/node/nodeModulesMaxDepthIncreased.json
index 9973c7d3c050c..230e8e959ece7 100644
--- a/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/node/nodeModulesMaxDepthIncreased.json
+++ b/tests/baselines/reference/project/nodeModulesMaxDepthIncreased/node/nodeModulesMaxDepthIncreased.json
@@ -7,6 +7,8 @@
     "project": "maxDepthIncreased",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "maxDepthIncreased/node_modules/m2/node_modules/m3/index.js",
         "maxDepthIncreased/node_modules/m2/entry.js",
         "maxDepthIncreased/node_modules/m1/index.js",
diff --git a/tests/baselines/reference/project/nonRelative/amd/nonRelative.json b/tests/baselines/reference/project/nonRelative/amd/nonRelative.json
index 6c09cfd6a4563..c9d773c1829fa 100644
--- a/tests/baselines/reference/project/nonRelative/amd/nonRelative.json
+++ b/tests/baselines/reference/project/nonRelative/amd/nonRelative.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "lib/foo/b.ts",
         "lib/foo/a.ts",
diff --git a/tests/baselines/reference/project/nonRelative/node/nonRelative.json b/tests/baselines/reference/project/nonRelative/node/nonRelative.json
index 6c09cfd6a4563..c9d773c1829fa 100644
--- a/tests/baselines/reference/project/nonRelative/node/nonRelative.json
+++ b/tests/baselines/reference/project/nonRelative/node/nonRelative.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "lib/foo/b.ts",
         "lib/foo/a.ts",
diff --git a/tests/baselines/reference/project/outMixedSubfolderNoOutdir/amd/outMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/outMixedSubfolderNoOutdir/amd/outMixedSubfolderNoOutdir.json
index 0337f4e39de80..8c7a98f959c01 100644
--- a/tests/baselines/reference/project/outMixedSubfolderNoOutdir/amd/outMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/outMixedSubfolderNoOutdir/amd/outMixedSubfolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMixedSubfolderNoOutdir/node/outMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/outMixedSubfolderNoOutdir/node/outMixedSubfolderNoOutdir.json
index 0337f4e39de80..8c7a98f959c01 100644
--- a/tests/baselines/reference/project/outMixedSubfolderNoOutdir/node/outMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/outMixedSubfolderNoOutdir/node/outMixedSubfolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/amd/outMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/amd/outMixedSubfolderSpecifyOutputDirectory.json
index 89732a1a90a9f..3852d0dd2148e 100644
--- a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/amd/outMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/amd/outMixedSubfolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/node/outMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/node/outMixedSubfolderSpecifyOutputDirectory.json
index 89732a1a90a9f..3852d0dd2148e 100644
--- a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/node/outMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputDirectory/node/outMixedSubfolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/amd/outMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/amd/outMixedSubfolderSpecifyOutputFile.json
index 16a1d63a4b565..f5449179393f7 100644
--- a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/amd/outMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/amd/outMixedSubfolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/node/outMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/node/outMixedSubfolderSpecifyOutputFile.json
index 16a1d63a4b565..f5449179393f7 100644
--- a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/node/outMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFile/node/outMixedSubfolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index c086a62c93314..1d651c8adbf2b 100644
--- a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index c086a62c93314..1d651c8adbf2b 100644
--- a/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/outMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/outMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outModuleMultifolderNoOutdir/amd/outModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/outModuleMultifolderNoOutdir/amd/outModuleMultifolderNoOutdir.json
index f4fbe495d2afb..3b03cfce24fd8 100644
--- a/tests/baselines/reference/project/outModuleMultifolderNoOutdir/amd/outModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/outModuleMultifolderNoOutdir/amd/outModuleMultifolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outModuleMultifolderNoOutdir/node/outModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/outModuleMultifolderNoOutdir/node/outModuleMultifolderNoOutdir.json
index f4fbe495d2afb..3b03cfce24fd8 100644
--- a/tests/baselines/reference/project/outModuleMultifolderNoOutdir/node/outModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/outModuleMultifolderNoOutdir/node/outModuleMultifolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/amd/outModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/amd/outModuleMultifolderSpecifyOutputDirectory.json
index 49cf8e201aa7b..af74f9b2f14e5 100644
--- a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/amd/outModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/amd/outModuleMultifolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/node/outModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/node/outModuleMultifolderSpecifyOutputDirectory.json
index 49cf8e201aa7b..af74f9b2f14e5 100644
--- a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/node/outModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputDirectory/node/outModuleMultifolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/amd/outModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/amd/outModuleMultifolderSpecifyOutputFile.json
index 52b18451856f5..bc5db5e3f5f3d 100644
--- a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/amd/outModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/amd/outModuleMultifolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/node/outModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/node/outModuleMultifolderSpecifyOutputFile.json
index e269f20f11c7c..469166f948385 100644
--- a/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/node/outModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outModuleMultifolderSpecifyOutputFile/node/outModuleMultifolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outModuleSimpleNoOutdir/amd/outModuleSimpleNoOutdir.json b/tests/baselines/reference/project/outModuleSimpleNoOutdir/amd/outModuleSimpleNoOutdir.json
index 5563c1c68403b..fc4107dacccde 100644
--- a/tests/baselines/reference/project/outModuleSimpleNoOutdir/amd/outModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/outModuleSimpleNoOutdir/amd/outModuleSimpleNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSimpleNoOutdir/node/outModuleSimpleNoOutdir.json b/tests/baselines/reference/project/outModuleSimpleNoOutdir/node/outModuleSimpleNoOutdir.json
index 5563c1c68403b..fc4107dacccde 100644
--- a/tests/baselines/reference/project/outModuleSimpleNoOutdir/node/outModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/outModuleSimpleNoOutdir/node/outModuleSimpleNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/amd/outModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/amd/outModuleSimpleSpecifyOutputDirectory.json
index d325ef6426a33..8aa88510e71b0 100644
--- a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/amd/outModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/amd/outModuleSimpleSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/node/outModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/node/outModuleSimpleSpecifyOutputDirectory.json
index d325ef6426a33..8aa88510e71b0 100644
--- a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/node/outModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputDirectory/node/outModuleSimpleSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/amd/outModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/amd/outModuleSimpleSpecifyOutputFile.json
index f217631f5c7ee..e7861f1a36d99 100644
--- a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/amd/outModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/amd/outModuleSimpleSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/node/outModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/node/outModuleSimpleSpecifyOutputFile.json
index e6d00d2734614..4598de4d2051e 100644
--- a/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/node/outModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outModuleSimpleSpecifyOutputFile/node/outModuleSimpleSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSubfolderNoOutdir/amd/outModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/outModuleSubfolderNoOutdir/amd/outModuleSubfolderNoOutdir.json
index 9f477b355819c..341e05bc7bdc5 100644
--- a/tests/baselines/reference/project/outModuleSubfolderNoOutdir/amd/outModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/outModuleSubfolderNoOutdir/amd/outModuleSubfolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSubfolderNoOutdir/node/outModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/outModuleSubfolderNoOutdir/node/outModuleSubfolderNoOutdir.json
index 9f477b355819c..341e05bc7bdc5 100644
--- a/tests/baselines/reference/project/outModuleSubfolderNoOutdir/node/outModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/outModuleSubfolderNoOutdir/node/outModuleSubfolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/amd/outModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/amd/outModuleSubfolderSpecifyOutputDirectory.json
index ff3220970009d..cfbe79831f704 100644
--- a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/amd/outModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/amd/outModuleSubfolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/node/outModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/node/outModuleSubfolderSpecifyOutputDirectory.json
index ff3220970009d..cfbe79831f704 100644
--- a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/node/outModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputDirectory/node/outModuleSubfolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/amd/outModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/amd/outModuleSubfolderSpecifyOutputFile.json
index f8af53fc67e96..cc00d955e4c15 100644
--- a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/amd/outModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/amd/outModuleSubfolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/node/outModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/node/outModuleSubfolderSpecifyOutputFile.json
index 2a20ee41c47d1..525e66e396aef 100644
--- a/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/node/outModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outModuleSubfolderSpecifyOutputFile/node/outModuleSubfolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outMultifolderNoOutdir/amd/outMultifolderNoOutdir.json b/tests/baselines/reference/project/outMultifolderNoOutdir/amd/outMultifolderNoOutdir.json
index 96cf423ced237..60b2a61bf94d9 100644
--- a/tests/baselines/reference/project/outMultifolderNoOutdir/amd/outMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/outMultifolderNoOutdir/amd/outMultifolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMultifolderNoOutdir/node/outMultifolderNoOutdir.json b/tests/baselines/reference/project/outMultifolderNoOutdir/node/outMultifolderNoOutdir.json
index 96cf423ced237..60b2a61bf94d9 100644
--- a/tests/baselines/reference/project/outMultifolderNoOutdir/node/outMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/outMultifolderNoOutdir/node/outMultifolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/amd/outMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/amd/outMultifolderSpecifyOutputDirectory.json
index 855c6446e0045..9eb7aecbcf907 100644
--- a/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/amd/outMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/amd/outMultifolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/node/outMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/node/outMultifolderSpecifyOutputDirectory.json
index 855c6446e0045..9eb7aecbcf907 100644
--- a/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/node/outMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outMultifolderSpecifyOutputDirectory/node/outMultifolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/amd/outMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/amd/outMultifolderSpecifyOutputFile.json
index c5c34be23ed5d..ad7df0e44cd6d 100644
--- a/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/amd/outMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/amd/outMultifolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/node/outMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/node/outMultifolderSpecifyOutputFile.json
index c5c34be23ed5d..ad7df0e44cd6d 100644
--- a/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/node/outMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outMultifolderSpecifyOutputFile/node/outMultifolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/outSimpleNoOutdir/amd/outSimpleNoOutdir.json b/tests/baselines/reference/project/outSimpleNoOutdir/amd/outSimpleNoOutdir.json
index 0b4424c5ecdc3..09b9c2f1b2c7f 100644
--- a/tests/baselines/reference/project/outSimpleNoOutdir/amd/outSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/outSimpleNoOutdir/amd/outSimpleNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSimpleNoOutdir/node/outSimpleNoOutdir.json b/tests/baselines/reference/project/outSimpleNoOutdir/node/outSimpleNoOutdir.json
index 0b4424c5ecdc3..09b9c2f1b2c7f 100644
--- a/tests/baselines/reference/project/outSimpleNoOutdir/node/outSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/outSimpleNoOutdir/node/outSimpleNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/amd/outSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/amd/outSimpleSpecifyOutputDirectory.json
index 1b67a03c5e88c..a378c869c6997 100644
--- a/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/amd/outSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/amd/outSimpleSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/node/outSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/node/outSimpleSpecifyOutputDirectory.json
index 1b67a03c5e88c..a378c869c6997 100644
--- a/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/node/outSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outSimpleSpecifyOutputDirectory/node/outSimpleSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSimpleSpecifyOutputFile/amd/outSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/outSimpleSpecifyOutputFile/amd/outSimpleSpecifyOutputFile.json
index 1623778caebd3..73b40fdf5bcba 100644
--- a/tests/baselines/reference/project/outSimpleSpecifyOutputFile/amd/outSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outSimpleSpecifyOutputFile/amd/outSimpleSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSimpleSpecifyOutputFile/node/outSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/outSimpleSpecifyOutputFile/node/outSimpleSpecifyOutputFile.json
index 1623778caebd3..73b40fdf5bcba 100644
--- a/tests/baselines/reference/project/outSimpleSpecifyOutputFile/node/outSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outSimpleSpecifyOutputFile/node/outSimpleSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSingleFileNoOutdir/amd/outSingleFileNoOutdir.json b/tests/baselines/reference/project/outSingleFileNoOutdir/amd/outSingleFileNoOutdir.json
index 1666ffdab3e51..ab3378787cbb6 100644
--- a/tests/baselines/reference/project/outSingleFileNoOutdir/amd/outSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/outSingleFileNoOutdir/amd/outSingleFileNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/outSingleFileNoOutdir/node/outSingleFileNoOutdir.json b/tests/baselines/reference/project/outSingleFileNoOutdir/node/outSingleFileNoOutdir.json
index 1666ffdab3e51..ab3378787cbb6 100644
--- a/tests/baselines/reference/project/outSingleFileNoOutdir/node/outSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/outSingleFileNoOutdir/node/outSingleFileNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/amd/outSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/amd/outSingleFileSpecifyOutputDirectory.json
index a55ee979a8010..c5a744a4c26f1 100644
--- a/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/amd/outSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/amd/outSingleFileSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/node/outSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/node/outSingleFileSpecifyOutputDirectory.json
index a55ee979a8010..c5a744a4c26f1 100644
--- a/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/node/outSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outSingleFileSpecifyOutputDirectory/node/outSingleFileSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/amd/outSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/amd/outSingleFileSpecifyOutputFile.json
index 1dfb816bddd37..93882b8f8b36f 100644
--- a/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/amd/outSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/amd/outSingleFileSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/node/outSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/node/outSingleFileSpecifyOutputFile.json
index 1dfb816bddd37..93882b8f8b36f 100644
--- a/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/node/outSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outSingleFileSpecifyOutputFile/node/outSingleFileSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/outSubfolderNoOutdir/amd/outSubfolderNoOutdir.json b/tests/baselines/reference/project/outSubfolderNoOutdir/amd/outSubfolderNoOutdir.json
index 7adfebb4b471b..5b54aaad20c5e 100644
--- a/tests/baselines/reference/project/outSubfolderNoOutdir/amd/outSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/outSubfolderNoOutdir/amd/outSubfolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSubfolderNoOutdir/node/outSubfolderNoOutdir.json b/tests/baselines/reference/project/outSubfolderNoOutdir/node/outSubfolderNoOutdir.json
index 7adfebb4b471b..5b54aaad20c5e 100644
--- a/tests/baselines/reference/project/outSubfolderNoOutdir/node/outSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/outSubfolderNoOutdir/node/outSubfolderNoOutdir.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/amd/outSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/amd/outSubfolderSpecifyOutputDirectory.json
index 91276850919df..61a8efaf3f303 100644
--- a/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/amd/outSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/amd/outSubfolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/node/outSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/node/outSubfolderSpecifyOutputDirectory.json
index 91276850919df..61a8efaf3f303 100644
--- a/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/node/outSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/outSubfolderSpecifyOutputDirectory/node/outSubfolderSpecifyOutputDirectory.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/amd/outSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/amd/outSubfolderSpecifyOutputFile.json
index 1022af7eedae8..1a51de4c1df59 100644
--- a/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/amd/outSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/amd/outSubfolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/node/outSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/node/outSubfolderSpecifyOutputFile.json
index 1022af7eedae8..1a51de4c1df59 100644
--- a/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/node/outSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/outSubfolderSpecifyOutputFile/node/outSubfolderSpecifyOutputFile.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/amd/privacyCheckOnImportedModuleDeclarationsInsideModule.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/amd/privacyCheckOnImportedModuleDeclarationsInsideModule.json
index 61cfd98c146a6..c82cb61abc67b 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/amd/privacyCheckOnImportedModuleDeclarationsInsideModule.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/amd/privacyCheckOnImportedModuleDeclarationsInsideModule.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "testGlo.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/node/privacyCheckOnImportedModuleDeclarationsInsideModule.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/node/privacyCheckOnImportedModuleDeclarationsInsideModule.json
index 61cfd98c146a6..c82cb61abc67b 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/node/privacyCheckOnImportedModuleDeclarationsInsideModule.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideModule/node/privacyCheckOnImportedModuleDeclarationsInsideModule.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "testGlo.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/amd/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/amd/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json
index 3627c51b1aa65..3547143d0a026 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/amd/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/amd/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/node/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/node/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json
index 3627c51b1aa65..3547143d0a026 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/node/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule/node/privacyCheckOnImportedModuleDeclarationsInsideNonExportedModule.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/amd/privacyCheckOnImportedModuleImportStatementInParentModule.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/amd/privacyCheckOnImportedModuleImportStatementInParentModule.json
index 390751ee4010e..a040571a9d069 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/amd/privacyCheckOnImportedModuleImportStatementInParentModule.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/amd/privacyCheckOnImportedModuleImportStatementInParentModule.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/node/privacyCheckOnImportedModuleImportStatementInParentModule.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/node/privacyCheckOnImportedModuleImportStatementInParentModule.json
index 390751ee4010e..a040571a9d069 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/node/privacyCheckOnImportedModuleImportStatementInParentModule.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleImportStatementInParentModule/node/privacyCheckOnImportedModuleImportStatementInParentModule.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/amd/privacyCheckOnImportedModuleSimpleReference.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/amd/privacyCheckOnImportedModuleSimpleReference.json
index b610f9b67a63a..35c2d19fdcf35 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/amd/privacyCheckOnImportedModuleSimpleReference.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/amd/privacyCheckOnImportedModuleSimpleReference.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "mExported.ts",
         "mNonExported.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/node/privacyCheckOnImportedModuleSimpleReference.json b/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/node/privacyCheckOnImportedModuleSimpleReference.json
index b610f9b67a63a..35c2d19fdcf35 100644
--- a/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/node/privacyCheckOnImportedModuleSimpleReference.json
+++ b/tests/baselines/reference/project/privacyCheckOnImportedModuleSimpleReference/node/privacyCheckOnImportedModuleSimpleReference.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "mExported.ts",
         "mNonExported.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/amd/privacyCheckOnIndirectTypeFromTheExternalType.json b/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/amd/privacyCheckOnIndirectTypeFromTheExternalType.json
index b169a1c69257f..119bbb3686aa7 100644
--- a/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/amd/privacyCheckOnIndirectTypeFromTheExternalType.json
+++ b/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/amd/privacyCheckOnIndirectTypeFromTheExternalType.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "indirectExternalModule.ts",
         "externalModule.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/node/privacyCheckOnIndirectTypeFromTheExternalType.json b/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/node/privacyCheckOnIndirectTypeFromTheExternalType.json
index b169a1c69257f..119bbb3686aa7 100644
--- a/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/node/privacyCheckOnIndirectTypeFromTheExternalType.json
+++ b/tests/baselines/reference/project/privacyCheckOnIndirectTypeFromTheExternalType/node/privacyCheckOnIndirectTypeFromTheExternalType.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "indirectExternalModule.ts",
         "externalModule.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/projectOptionTest/amd/projectOptionTest.json b/tests/baselines/reference/project/projectOptionTest/amd/projectOptionTest.json
index 231f3e9afe579..d6424b40f430f 100644
--- a/tests/baselines/reference/project/projectOptionTest/amd/projectOptionTest.json
+++ b/tests/baselines/reference/project/projectOptionTest/amd/projectOptionTest.json
@@ -6,6 +6,8 @@
     "project": "Test",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "Test/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/projectOptionTest/node/projectOptionTest.json b/tests/baselines/reference/project/projectOptionTest/node/projectOptionTest.json
index 231f3e9afe579..d6424b40f430f 100644
--- a/tests/baselines/reference/project/projectOptionTest/node/projectOptionTest.json
+++ b/tests/baselines/reference/project/projectOptionTest/node/projectOptionTest.json
@@ -6,6 +6,8 @@
     "project": "Test",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "Test/a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/prologueEmit/amd/prologueEmit.json b/tests/baselines/reference/project/prologueEmit/amd/prologueEmit.json
index 44fc3168d4ea1..4bd84ede2e93f 100644
--- a/tests/baselines/reference/project/prologueEmit/amd/prologueEmit.json
+++ b/tests/baselines/reference/project/prologueEmit/amd/prologueEmit.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "globalThisCapture.ts",
         "__extends.ts"
     ],
diff --git a/tests/baselines/reference/project/prologueEmit/node/prologueEmit.json b/tests/baselines/reference/project/prologueEmit/node/prologueEmit.json
index 44fc3168d4ea1..4bd84ede2e93f 100644
--- a/tests/baselines/reference/project/prologueEmit/node/prologueEmit.json
+++ b/tests/baselines/reference/project/prologueEmit/node/prologueEmit.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "globalThisCapture.ts",
         "__extends.ts"
     ],
diff --git a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/quotesInFileAndDirectoryNames.json b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/quotesInFileAndDirectoryNames.json
index bdebe6382c8f5..94f1eb4843501 100644
--- a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/quotesInFileAndDirectoryNames.json
+++ b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/amd/quotesInFileAndDirectoryNames.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "li'b/class'A.ts",
         "m'ain.ts"
     ],
diff --git a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/quotesInFileAndDirectoryNames.json b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/quotesInFileAndDirectoryNames.json
index bdebe6382c8f5..94f1eb4843501 100644
--- a/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/quotesInFileAndDirectoryNames.json
+++ b/tests/baselines/reference/project/quotesInFileAndDirectoryNames/node/quotesInFileAndDirectoryNames.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "li'b/class'A.ts",
         "m'ain.ts"
     ],
diff --git a/tests/baselines/reference/project/referencePathStatic/amd/referencePathStatic.json b/tests/baselines/reference/project/referencePathStatic/amd/referencePathStatic.json
index db28d934fb821..2c3eacfb20722 100644
--- a/tests/baselines/reference/project/referencePathStatic/amd/referencePathStatic.json
+++ b/tests/baselines/reference/project/referencePathStatic/amd/referencePathStatic.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "lib.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/referencePathStatic/node/referencePathStatic.json b/tests/baselines/reference/project/referencePathStatic/node/referencePathStatic.json
index db28d934fb821..2c3eacfb20722 100644
--- a/tests/baselines/reference/project/referencePathStatic/node/referencePathStatic.json
+++ b/tests/baselines/reference/project/referencePathStatic/node/referencePathStatic.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "lib.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePaths/amd/referenceResolutionRelativePaths.json b/tests/baselines/reference/project/referenceResolutionRelativePaths/amd/referenceResolutionRelativePaths.json
index 00c235e16c9f8..129ce13db40ea 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePaths/amd/referenceResolutionRelativePaths.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePaths/amd/referenceResolutionRelativePaths.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "../../../bar/bar.ts",
         "foo.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePaths/node/referenceResolutionRelativePaths.json b/tests/baselines/reference/project/referenceResolutionRelativePaths/node/referenceResolutionRelativePaths.json
index 00c235e16c9f8..129ce13db40ea 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePaths/node/referenceResolutionRelativePaths.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePaths/node/referenceResolutionRelativePaths.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "../../../bar/bar.ts",
         "foo.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/amd/referenceResolutionRelativePathsFromRootDirectory.json b/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/amd/referenceResolutionRelativePathsFromRootDirectory.json
index cf3e51e5c7c60..c443a64e1df3f 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/amd/referenceResolutionRelativePathsFromRootDirectory.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/amd/referenceResolutionRelativePathsFromRootDirectory.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "bar/bar.ts",
         "src/ts/foo/foo.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/node/referenceResolutionRelativePathsFromRootDirectory.json b/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/node/referenceResolutionRelativePathsFromRootDirectory.json
index cf3e51e5c7c60..c443a64e1df3f 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/node/referenceResolutionRelativePathsFromRootDirectory.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePathsFromRootDirectory/node/referenceResolutionRelativePathsFromRootDirectory.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "bar/bar.ts",
         "src/ts/foo/foo.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/amd/referenceResolutionRelativePathsNoResolve.json b/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/amd/referenceResolutionRelativePathsNoResolve.json
index 949254979beb5..70ab84a4f50a7 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/amd/referenceResolutionRelativePathsNoResolve.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/amd/referenceResolutionRelativePathsNoResolve.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "foo.ts",
         "../../../bar/bar.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/node/referenceResolutionRelativePathsNoResolve.json b/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/node/referenceResolutionRelativePathsNoResolve.json
index 949254979beb5..70ab84a4f50a7 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/node/referenceResolutionRelativePathsNoResolve.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePathsNoResolve/node/referenceResolutionRelativePathsNoResolve.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "foo.ts",
         "../../../bar/bar.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/amd/referenceResolutionRelativePathsRelativeToRootDirectory.json b/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/amd/referenceResolutionRelativePathsRelativeToRootDirectory.json
index d1dbbcde56118..1cefdbe7921bf 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/amd/referenceResolutionRelativePathsRelativeToRootDirectory.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/amd/referenceResolutionRelativePathsRelativeToRootDirectory.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "../../../bar/bar.ts",
         "../../../src/ts/foo/foo.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/node/referenceResolutionRelativePathsRelativeToRootDirectory.json b/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/node/referenceResolutionRelativePathsRelativeToRootDirectory.json
index d1dbbcde56118..1cefdbe7921bf 100644
--- a/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/node/referenceResolutionRelativePathsRelativeToRootDirectory.json
+++ b/tests/baselines/reference/project/referenceResolutionRelativePathsRelativeToRootDirectory/node/referenceResolutionRelativePathsRelativeToRootDirectory.json
@@ -8,6 +8,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "../../../bar/bar.ts",
         "../../../src/ts/foo/foo.ts"
     ],
diff --git a/tests/baselines/reference/project/referenceResolutionSameFileTwice/amd/referenceResolutionSameFileTwice.json b/tests/baselines/reference/project/referenceResolutionSameFileTwice/amd/referenceResolutionSameFileTwice.json
index e295c549f83af..18b0bc3d92362 100644
--- a/tests/baselines/reference/project/referenceResolutionSameFileTwice/amd/referenceResolutionSameFileTwice.json
+++ b/tests/baselines/reference/project/referenceResolutionSameFileTwice/amd/referenceResolutionSameFileTwice.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/referenceResolutionSameFileTwice/node/referenceResolutionSameFileTwice.json b/tests/baselines/reference/project/referenceResolutionSameFileTwice/node/referenceResolutionSameFileTwice.json
index e295c549f83af..18b0bc3d92362 100644
--- a/tests/baselines/reference/project/referenceResolutionSameFileTwice/node/referenceResolutionSameFileTwice.json
+++ b/tests/baselines/reference/project/referenceResolutionSameFileTwice/node/referenceResolutionSameFileTwice.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/amd/referenceResolutionSameFileTwiceNoResolve.json b/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/amd/referenceResolutionSameFileTwiceNoResolve.json
index df013fc038963..a71527ddd7578 100644
--- a/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/amd/referenceResolutionSameFileTwiceNoResolve.json
+++ b/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/amd/referenceResolutionSameFileTwiceNoResolve.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/node/referenceResolutionSameFileTwiceNoResolve.json b/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/node/referenceResolutionSameFileTwiceNoResolve.json
index df013fc038963..a71527ddd7578 100644
--- a/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/node/referenceResolutionSameFileTwiceNoResolve.json
+++ b/tests/baselines/reference/project/referenceResolutionSameFileTwiceNoResolve/node/referenceResolutionSameFileTwiceNoResolve.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/relativeGlobal/amd/relativeGlobal.json b/tests/baselines/reference/project/relativeGlobal/amd/relativeGlobal.json
index 78c23379ac5ed..0f98943850eb1 100644
--- a/tests/baselines/reference/project/relativeGlobal/amd/relativeGlobal.json
+++ b/tests/baselines/reference/project/relativeGlobal/amd/relativeGlobal.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/relativeGlobal/node/relativeGlobal.json b/tests/baselines/reference/project/relativeGlobal/node/relativeGlobal.json
index 78c23379ac5ed..0f98943850eb1 100644
--- a/tests/baselines/reference/project/relativeGlobal/node/relativeGlobal.json
+++ b/tests/baselines/reference/project/relativeGlobal/node/relativeGlobal.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/relativeGlobalRef/amd/relativeGlobalRef.json b/tests/baselines/reference/project/relativeGlobalRef/amd/relativeGlobalRef.json
index 3e463b2e3d61d..32464f4c0c793 100644
--- a/tests/baselines/reference/project/relativeGlobalRef/amd/relativeGlobalRef.json
+++ b/tests/baselines/reference/project/relativeGlobalRef/amd/relativeGlobalRef.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/relativeGlobalRef/node/relativeGlobalRef.json b/tests/baselines/reference/project/relativeGlobalRef/node/relativeGlobalRef.json
index 3e463b2e3d61d..32464f4c0c793 100644
--- a/tests/baselines/reference/project/relativeGlobalRef/node/relativeGlobalRef.json
+++ b/tests/baselines/reference/project/relativeGlobalRef/node/relativeGlobalRef.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "consume.ts"
     ],
diff --git a/tests/baselines/reference/project/relativeNested/amd/relativeNested.json b/tests/baselines/reference/project/relativeNested/amd/relativeNested.json
index aa4153f638a1a..afa486bfd7728 100644
--- a/tests/baselines/reference/project/relativeNested/amd/relativeNested.json
+++ b/tests/baselines/reference/project/relativeNested/amd/relativeNested.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "main/consume.ts",
         "app.ts"
diff --git a/tests/baselines/reference/project/relativeNested/node/relativeNested.json b/tests/baselines/reference/project/relativeNested/node/relativeNested.json
index aa4153f638a1a..afa486bfd7728 100644
--- a/tests/baselines/reference/project/relativeNested/node/relativeNested.json
+++ b/tests/baselines/reference/project/relativeNested/node/relativeNested.json
@@ -7,6 +7,8 @@
     "runTest": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.ts",
         "main/consume.ts",
         "app.ts"
diff --git a/tests/baselines/reference/project/relativeNestedRef/amd/relativeNestedRef.json b/tests/baselines/reference/project/relativeNestedRef/amd/relativeNestedRef.json
index ad0eb75178322..64a85305c0114 100644
--- a/tests/baselines/reference/project/relativeNestedRef/amd/relativeNestedRef.json
+++ b/tests/baselines/reference/project/relativeNestedRef/amd/relativeNestedRef.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "main/consume.ts"
     ],
diff --git a/tests/baselines/reference/project/relativeNestedRef/node/relativeNestedRef.json b/tests/baselines/reference/project/relativeNestedRef/node/relativeNestedRef.json
index ad0eb75178322..64a85305c0114 100644
--- a/tests/baselines/reference/project/relativeNestedRef/node/relativeNestedRef.json
+++ b/tests/baselines/reference/project/relativeNestedRef/node/relativeNestedRef.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "decl.d.ts",
         "main/consume.ts"
     ],
diff --git a/tests/baselines/reference/project/relativePaths/amd/relativePaths.json b/tests/baselines/reference/project/relativePaths/amd/relativePaths.json
index e0591c7597985..ce98f5d3d6684 100644
--- a/tests/baselines/reference/project/relativePaths/amd/relativePaths.json
+++ b/tests/baselines/reference/project/relativePaths/amd/relativePaths.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "A/b.ts",
         "A/a.ts",
         "app.ts"
diff --git a/tests/baselines/reference/project/relativePaths/node/relativePaths.json b/tests/baselines/reference/project/relativePaths/node/relativePaths.json
index e0591c7597985..ce98f5d3d6684 100644
--- a/tests/baselines/reference/project/relativePaths/node/relativePaths.json
+++ b/tests/baselines/reference/project/relativePaths/node/relativePaths.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "A/b.ts",
         "A/a.ts",
         "app.ts"
diff --git a/tests/baselines/reference/project/rootDirectory/amd/rootDirectory.json b/tests/baselines/reference/project/rootDirectory/amd/rootDirectory.json
index 8c7a5c125e9cf..96ae34f24c745 100644
--- a/tests/baselines/reference/project/rootDirectory/amd/rootDirectory.json
+++ b/tests/baselines/reference/project/rootDirectory/amd/rootDirectory.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/rootDirectory/node/rootDirectory.json b/tests/baselines/reference/project/rootDirectory/node/rootDirectory.json
index 8c7a5c125e9cf..96ae34f24c745 100644
--- a/tests/baselines/reference/project/rootDirectory/node/rootDirectory.json
+++ b/tests/baselines/reference/project/rootDirectory/node/rootDirectory.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/rootDirectoryErrors/amd/rootDirectoryErrors.json b/tests/baselines/reference/project/rootDirectoryErrors/amd/rootDirectoryErrors.json
index 7deea1ddb8e2f..29426144daa0b 100644
--- a/tests/baselines/reference/project/rootDirectoryErrors/amd/rootDirectoryErrors.json
+++ b/tests/baselines/reference/project/rootDirectoryErrors/amd/rootDirectoryErrors.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/rootDirectoryErrors/node/rootDirectoryErrors.json b/tests/baselines/reference/project/rootDirectoryErrors/node/rootDirectoryErrors.json
index 7deea1ddb8e2f..29426144daa0b 100644
--- a/tests/baselines/reference/project/rootDirectoryErrors/node/rootDirectoryErrors.json
+++ b/tests/baselines/reference/project/rootDirectoryErrors/node/rootDirectoryErrors.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/rootDirectoryWithSourceRoot/amd/rootDirectoryWithSourceRoot.json b/tests/baselines/reference/project/rootDirectoryWithSourceRoot/amd/rootDirectoryWithSourceRoot.json
index debfdabbdfb1c..6efb352986a3c 100644
--- a/tests/baselines/reference/project/rootDirectoryWithSourceRoot/amd/rootDirectoryWithSourceRoot.json
+++ b/tests/baselines/reference/project/rootDirectoryWithSourceRoot/amd/rootDirectoryWithSourceRoot.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/rootDirectoryWithSourceRoot/node/rootDirectoryWithSourceRoot.json b/tests/baselines/reference/project/rootDirectoryWithSourceRoot/node/rootDirectoryWithSourceRoot.json
index debfdabbdfb1c..6efb352986a3c 100644
--- a/tests/baselines/reference/project/rootDirectoryWithSourceRoot/node/rootDirectoryWithSourceRoot.json
+++ b/tests/baselines/reference/project/rootDirectoryWithSourceRoot/node/rootDirectoryWithSourceRoot.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/rootDirectoryWithoutOutDir/amd/rootDirectoryWithoutOutDir.json b/tests/baselines/reference/project/rootDirectoryWithoutOutDir/amd/rootDirectoryWithoutOutDir.json
index ce32cd431b2cf..b14914ff0346c 100644
--- a/tests/baselines/reference/project/rootDirectoryWithoutOutDir/amd/rootDirectoryWithoutOutDir.json
+++ b/tests/baselines/reference/project/rootDirectoryWithoutOutDir/amd/rootDirectoryWithoutOutDir.json
@@ -7,6 +7,8 @@
     "rootDir": "FolderA/FolderB/FolderC",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/rootDirectoryWithoutOutDir/node/rootDirectoryWithoutOutDir.json b/tests/baselines/reference/project/rootDirectoryWithoutOutDir/node/rootDirectoryWithoutOutDir.json
index ce32cd431b2cf..b14914ff0346c 100644
--- a/tests/baselines/reference/project/rootDirectoryWithoutOutDir/node/rootDirectoryWithoutOutDir.json
+++ b/tests/baselines/reference/project/rootDirectoryWithoutOutDir/node/rootDirectoryWithoutOutDir.json
@@ -7,6 +7,8 @@
     "rootDir": "FolderA/FolderB/FolderC",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "FolderA/FolderB/FolderC/fileC.ts",
         "FolderA/FolderB/fileB.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/amd/sourceRootAbsolutePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/amd/sourceRootAbsolutePathMixedSubfolderNoOutdir.json
index 5558d09cff045..54dc140e1dfa4 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/amd/sourceRootAbsolutePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/amd/sourceRootAbsolutePathMixedSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/node/sourceRootAbsolutePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/node/sourceRootAbsolutePathMixedSubfolderNoOutdir.json
index 5558d09cff045..54dc140e1dfa4 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/node/sourceRootAbsolutePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderNoOutdir/node/sourceRootAbsolutePathMixedSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
index 08db981938ddc..99a53de496918 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
index 08db981938ddc..99a53de496918 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
index add85ba77b83a..499f2f3b1d907 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
index add85ba77b83a..499f2f3b1d907 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index f8cb5ae4005cc..7089293100780 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -13,6 +13,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index f8cb5ae4005cc..7089293100780 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootAbsolutePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -13,6 +13,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/amd/sourceRootAbsolutePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/amd/sourceRootAbsolutePathModuleMultifolderNoOutdir.json
index 00275390d495a..cd1a32353f451 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/amd/sourceRootAbsolutePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/amd/sourceRootAbsolutePathModuleMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/node/sourceRootAbsolutePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/node/sourceRootAbsolutePathModuleMultifolderNoOutdir.json
index 00275390d495a..cd1a32353f451 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/node/sourceRootAbsolutePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderNoOutdir/node/sourceRootAbsolutePathModuleMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
index 3e9835cb39b8f..943c9f685e5fa 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
index 3e9835cb39b8f..943c9f685e5fa 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
index 87783cc3ebcd7..c5e8b375fe3e9 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
index c0cf625cc2b6a..f9228f2e9d3e1 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/amd/sourceRootAbsolutePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/amd/sourceRootAbsolutePathModuleSimpleNoOutdir.json
index 409d97ad10e21..c91638a9c7454 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/amd/sourceRootAbsolutePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/amd/sourceRootAbsolutePathModuleSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/node/sourceRootAbsolutePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/node/sourceRootAbsolutePathModuleSimpleNoOutdir.json
index 409d97ad10e21..c91638a9c7454 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/node/sourceRootAbsolutePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleNoOutdir/node/sourceRootAbsolutePathModuleSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
index 2cdf90cf47a8b..72c7e99dcf028 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
index 2cdf90cf47a8b..72c7e99dcf028 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json
index b3b9bda4d55d6..e92c71f42b150 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json
index 6bac4492c05b8..1c41f04f7a66f 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile/node/sourceRootAbsolutePathModuleSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/amd/sourceRootAbsolutePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/amd/sourceRootAbsolutePathModuleSubfolderNoOutdir.json
index 9d91234a1a9b2..4de88028c9fba 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/amd/sourceRootAbsolutePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/amd/sourceRootAbsolutePathModuleSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/node/sourceRootAbsolutePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/node/sourceRootAbsolutePathModuleSubfolderNoOutdir.json
index 9d91234a1a9b2..4de88028c9fba 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/node/sourceRootAbsolutePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderNoOutdir/node/sourceRootAbsolutePathModuleSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
index 76ce8b750d84e..91547e5ec71b8 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
index 76ce8b750d84e..91547e5ec71b8 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
index efba75598433a..3b9d70d28c864 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
index 57ae179fadde2..b1e2eb2d31b68 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathModuleSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/amd/sourceRootAbsolutePathMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/amd/sourceRootAbsolutePathMultifolderNoOutdir.json
index 7e385c3c04120..74a242027c28e 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/amd/sourceRootAbsolutePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/amd/sourceRootAbsolutePathMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/node/sourceRootAbsolutePathMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/node/sourceRootAbsolutePathMultifolderNoOutdir.json
index 7e385c3c04120..74a242027c28e 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/node/sourceRootAbsolutePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderNoOutdir/node/sourceRootAbsolutePathMultifolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json
index 075d479d4fd0f..d9a269478d964 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json
index 075d479d4fd0f..d9a269478d964 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory/node/sourceRootAbsolutePathMultifolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json
index baec72a7bec0c..2ec1c0876bf20 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/amd/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json
index baec72a7bec0c..2ec1c0876bf20 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathMultifolderSpecifyOutputFile/node/sourceRootAbsolutePathMultifolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/amd/sourceRootAbsolutePathSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/amd/sourceRootAbsolutePathSimpleNoOutdir.json
index 7b82ba4969174..ff8d63233067a 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/amd/sourceRootAbsolutePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/amd/sourceRootAbsolutePathSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/node/sourceRootAbsolutePathSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/node/sourceRootAbsolutePathSimpleNoOutdir.json
index 7b82ba4969174..ff8d63233067a 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/node/sourceRootAbsolutePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleNoOutdir/node/sourceRootAbsolutePathSimpleNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json
index fe2e1509fbfcb..bcc8bbe3da8ba 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/amd/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json
index fe2e1509fbfcb..bcc8bbe3da8ba 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputDirectory/node/sourceRootAbsolutePathSimpleSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathSimpleSpecifyOutputFile.json
index 2c06a5d4780e0..6cbe6a5309118 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/amd/sourceRootAbsolutePathSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/node/sourceRootAbsolutePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/node/sourceRootAbsolutePathSimpleSpecifyOutputFile.json
index 2c06a5d4780e0..6cbe6a5309118 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/node/sourceRootAbsolutePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSimpleSpecifyOutputFile/node/sourceRootAbsolutePathSimpleSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/amd/sourceRootAbsolutePathSingleFileNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/amd/sourceRootAbsolutePathSingleFileNoOutdir.json
index e48dd56a9bbf6..dd2fff2cb99e1 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/amd/sourceRootAbsolutePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/amd/sourceRootAbsolutePathSingleFileNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/node/sourceRootAbsolutePathSingleFileNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/node/sourceRootAbsolutePathSingleFileNoOutdir.json
index e48dd56a9bbf6..dd2fff2cb99e1 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/node/sourceRootAbsolutePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileNoOutdir/node/sourceRootAbsolutePathSingleFileNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json
index 7571482a15451..353bf2bcbe87a 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/amd/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/node/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/node/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json
index 7571482a15451..353bf2bcbe87a 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/node/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory/node/sourceRootAbsolutePathSingleFileSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/amd/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/amd/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json
index a337bb07bdc59..3942383f683a9 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/amd/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/amd/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/node/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/node/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json
index a337bb07bdc59..3942383f683a9 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/node/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSingleFileSpecifyOutputFile/node/sourceRootAbsolutePathSingleFileSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/amd/sourceRootAbsolutePathSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/amd/sourceRootAbsolutePathSubfolderNoOutdir.json
index 245f62e47c1ae..f1567a8882a1f 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/amd/sourceRootAbsolutePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/amd/sourceRootAbsolutePathSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/node/sourceRootAbsolutePathSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/node/sourceRootAbsolutePathSubfolderNoOutdir.json
index 245f62e47c1ae..f1567a8882a1f 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/node/sourceRootAbsolutePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderNoOutdir/node/sourceRootAbsolutePathSubfolderNoOutdir.json
@@ -11,6 +11,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json
index cbc12d999e3d4..0cf86077a686c 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/amd/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json
index cbc12d999e3d4..0cf86077a686c 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory/node/sourceRootAbsolutePathSubfolderSpecifyOutputDirectory.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json
index e0f3690eba343..d3ac3a495d29f 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/amd/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json
index e0f3690eba343..d3ac3a495d29f 100644
--- a/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootAbsolutePathSubfolderSpecifyOutputFile/node/sourceRootAbsolutePathSubfolderSpecifyOutputFile.json
@@ -12,6 +12,8 @@
     "resolveSourceRoot": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/amd/sourceRootRelativePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/amd/sourceRootRelativePathMixedSubfolderNoOutdir.json
index e3461e3e97110..e88496235ff0a 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/amd/sourceRootRelativePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/amd/sourceRootRelativePathMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/node/sourceRootRelativePathMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/node/sourceRootRelativePathMixedSubfolderNoOutdir.json
index e3461e3e97110..e88496235ff0a 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/node/sourceRootRelativePathMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderNoOutdir/node/sourceRootRelativePathMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
index 235203de03e60..215bf5be82ce7 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
index 235203de03e60..215bf5be82ce7 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json
index 093798629a8bf..fb08ca4bafae8 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json
index 093798629a8bf..fb08ca4bafae8 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFile/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 5e13094efd317..e8ae9e150f063 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 5e13094efd317..e8ae9e150f063 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourceRootRelativePathMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/amd/sourceRootRelativePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/amd/sourceRootRelativePathModuleMultifolderNoOutdir.json
index c790fc7fa7eaf..98a9d8ddee1ef 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/amd/sourceRootRelativePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/amd/sourceRootRelativePathModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/node/sourceRootRelativePathModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/node/sourceRootRelativePathModuleMultifolderNoOutdir.json
index c790fc7fa7eaf..98a9d8ddee1ef 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/node/sourceRootRelativePathModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderNoOutdir/node/sourceRootRelativePathModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
index bf7f74954e9fa..26a7372bdd8b1 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
index bf7f74954e9fa..26a7372bdd8b1 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json
index 3bf8e03753335..b23978bbacbcd 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/amd/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/node/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/node/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json
index 92a4cbdfc7d91..8073c8445a71d 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/node/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleMultifolderSpecifyOutputFile/node/sourceRootRelativePathModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/amd/sourceRootRelativePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/amd/sourceRootRelativePathModuleSimpleNoOutdir.json
index 2336f1abc31da..095f1679fe75a 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/amd/sourceRootRelativePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/amd/sourceRootRelativePathModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/node/sourceRootRelativePathModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/node/sourceRootRelativePathModuleSimpleNoOutdir.json
index 2336f1abc31da..095f1679fe75a 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/node/sourceRootRelativePathModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleNoOutdir/node/sourceRootRelativePathModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json
index e7ab45cb4d564..c76456c546746 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/node/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/node/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json
index e7ab45cb4d564..c76456c546746 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/node/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory/node/sourceRootRelativePathModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/amd/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/amd/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json
index 73af3537626ec..403c703dc3160 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/amd/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/amd/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/node/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/node/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json
index 602619898e980..5db69ae68331e 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/node/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSimpleSpecifyOutputFile/node/sourceRootRelativePathModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/amd/sourceRootRelativePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/amd/sourceRootRelativePathModuleSubfolderNoOutdir.json
index 8f4656da00e09..35884f5fd2aa1 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/amd/sourceRootRelativePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/amd/sourceRootRelativePathModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/node/sourceRootRelativePathModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/node/sourceRootRelativePathModuleSubfolderNoOutdir.json
index 8f4656da00e09..35884f5fd2aa1 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/node/sourceRootRelativePathModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderNoOutdir/node/sourceRootRelativePathModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
index 70b26bc417c97..5fa148b713127 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
index 70b26bc417c97..5fa148b713127 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json
index 80c46e0284791..d7fa4c8247c7a 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/amd/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/node/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/node/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json
index e2a0f396502c4..e6049e27de13d 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/node/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathModuleSubfolderSpecifyOutputFile/node/sourceRootRelativePathModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/amd/sourceRootRelativePathMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/amd/sourceRootRelativePathMultifolderNoOutdir.json
index c11b1817250af..b606a4dda8f9f 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/amd/sourceRootRelativePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/amd/sourceRootRelativePathMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/node/sourceRootRelativePathMultifolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/node/sourceRootRelativePathMultifolderNoOutdir.json
index c11b1817250af..b606a4dda8f9f 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/node/sourceRootRelativePathMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMultifolderNoOutdir/node/sourceRootRelativePathMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json
index 9b55aea3a2ff1..b50d1c469f44c 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/amd/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json
index 9b55aea3a2ff1..b50d1c469f44c 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputDirectory/node/sourceRootRelativePathMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/amd/sourceRootRelativePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/amd/sourceRootRelativePathMultifolderSpecifyOutputFile.json
index 5ffb3ed147240..9c57960eb74de 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/amd/sourceRootRelativePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/amd/sourceRootRelativePathMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/node/sourceRootRelativePathMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/node/sourceRootRelativePathMultifolderSpecifyOutputFile.json
index 5ffb3ed147240..9c57960eb74de 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/node/sourceRootRelativePathMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathMultifolderSpecifyOutputFile/node/sourceRootRelativePathMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/amd/sourceRootRelativePathSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/amd/sourceRootRelativePathSimpleNoOutdir.json
index 3dd81001264e3..52b7b4e339932 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/amd/sourceRootRelativePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/amd/sourceRootRelativePathSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/node/sourceRootRelativePathSimpleNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/node/sourceRootRelativePathSimpleNoOutdir.json
index 3dd81001264e3..52b7b4e339932 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/node/sourceRootRelativePathSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSimpleNoOutdir/node/sourceRootRelativePathSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathSimpleSpecifyOutputDirectory.json
index aa88b3bc7dd93..bed9b7a091da4 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/amd/sourceRootRelativePathSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/node/sourceRootRelativePathSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/node/sourceRootRelativePathSimpleSpecifyOutputDirectory.json
index aa88b3bc7dd93..bed9b7a091da4 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/node/sourceRootRelativePathSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputDirectory/node/sourceRootRelativePathSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/amd/sourceRootRelativePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/amd/sourceRootRelativePathSimpleSpecifyOutputFile.json
index 04f0a1686c67e..97c1eae937685 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/amd/sourceRootRelativePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/amd/sourceRootRelativePathSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/node/sourceRootRelativePathSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/node/sourceRootRelativePathSimpleSpecifyOutputFile.json
index 04f0a1686c67e..97c1eae937685 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/node/sourceRootRelativePathSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSimpleSpecifyOutputFile/node/sourceRootRelativePathSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/amd/sourceRootRelativePathSingleFileNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/amd/sourceRootRelativePathSingleFileNoOutdir.json
index 56d9e5160db72..e15a5b5fed30d 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/amd/sourceRootRelativePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/amd/sourceRootRelativePathSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/node/sourceRootRelativePathSingleFileNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/node/sourceRootRelativePathSingleFileNoOutdir.json
index 56d9e5160db72..e15a5b5fed30d 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/node/sourceRootRelativePathSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSingleFileNoOutdir/node/sourceRootRelativePathSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/amd/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/amd/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json
index 9c787870ca1d0..395338208d629 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/amd/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/amd/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/node/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/node/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json
index 9c787870ca1d0..395338208d629 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/node/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputDirectory/node/sourceRootRelativePathSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/amd/sourceRootRelativePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/amd/sourceRootRelativePathSingleFileSpecifyOutputFile.json
index 5743795520b22..75bfb8792718a 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/amd/sourceRootRelativePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/amd/sourceRootRelativePathSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/node/sourceRootRelativePathSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/node/sourceRootRelativePathSingleFileSpecifyOutputFile.json
index 5743795520b22..75bfb8792718a 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/node/sourceRootRelativePathSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSingleFileSpecifyOutputFile/node/sourceRootRelativePathSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/amd/sourceRootRelativePathSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/amd/sourceRootRelativePathSubfolderNoOutdir.json
index 43345666db832..10a988c4c140d 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/amd/sourceRootRelativePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/amd/sourceRootRelativePathSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/node/sourceRootRelativePathSubfolderNoOutdir.json b/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/node/sourceRootRelativePathSubfolderNoOutdir.json
index 43345666db832..10a988c4c140d 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/node/sourceRootRelativePathSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSubfolderNoOutdir/node/sourceRootRelativePathSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json
index 37b9b953f505b..2d9abc19c8cba 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/amd/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json
index 37b9b953f505b..2d9abc19c8cba 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputDirectory/node/sourceRootRelativePathSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/amd/sourceRootRelativePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/amd/sourceRootRelativePathSubfolderSpecifyOutputFile.json
index 22602e7983033..603cc6ee949b0 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/amd/sourceRootRelativePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/amd/sourceRootRelativePathSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/node/sourceRootRelativePathSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/node/sourceRootRelativePathSubfolderSpecifyOutputFile.json
index 22602e7983033..603cc6ee949b0 100644
--- a/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/node/sourceRootRelativePathSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourceRootRelativePathSubfolderSpecifyOutputFile/node/sourceRootRelativePathSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/amd/sourceRootWithNoSourceMapOption.json b/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/amd/sourceRootWithNoSourceMapOption.json
index d6bf964ac64a6..fc384d036c0a2 100644
--- a/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/amd/sourceRootWithNoSourceMapOption.json
+++ b/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/amd/sourceRootWithNoSourceMapOption.json
@@ -7,6 +7,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/node/sourceRootWithNoSourceMapOption.json b/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/node/sourceRootWithNoSourceMapOption.json
index d6bf964ac64a6..fc384d036c0a2 100644
--- a/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/node/sourceRootWithNoSourceMapOption.json
+++ b/tests/baselines/reference/project/sourceRootWithNoSourceMapOption/node/sourceRootWithNoSourceMapOption.json
@@ -7,6 +7,8 @@
     "sourceRoot": "../src",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/amd/sourcemapMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/amd/sourcemapMixedSubfolderNoOutdir.json
index f5b8c0b912308..57da4ec829679 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/amd/sourcemapMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/amd/sourcemapMixedSubfolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/node/sourcemapMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/node/sourcemapMixedSubfolderNoOutdir.json
index f5b8c0b912308..57da4ec829679 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/node/sourcemapMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderNoOutdir/node/sourcemapMixedSubfolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputDirectory.json
index 1de709bceb8dc..75e5d91e3b6fb 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputDirectory.json
index 1de709bceb8dc..75e5d91e3b6fb 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/amd/sourcemapMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/amd/sourcemapMixedSubfolderSpecifyOutputFile.json
index df192538c4b89..ca15bdbd0390a 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/amd/sourcemapMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/amd/sourcemapMixedSubfolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/node/sourcemapMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/node/sourcemapMixedSubfolderSpecifyOutputFile.json
index df192538c4b89..ca15bdbd0390a 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/node/sourcemapMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFile/node/sourcemapMixedSubfolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index ce3f6fcc301bd..0e12348e4a879 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index ce3f6fcc301bd..0e12348e4a879 100644
--- a/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcemapMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -11,6 +11,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/amd/sourcemapModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/amd/sourcemapModuleMultifolderNoOutdir.json
index b261594a8df14..96573ef4e5f05 100644
--- a/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/amd/sourcemapModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/amd/sourcemapModuleMultifolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/node/sourcemapModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/node/sourcemapModuleMultifolderNoOutdir.json
index b261594a8df14..96573ef4e5f05 100644
--- a/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/node/sourcemapModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapModuleMultifolderNoOutdir/node/sourcemapModuleMultifolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/amd/sourcemapModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/amd/sourcemapModuleMultifolderSpecifyOutputDirectory.json
index cf7c46ad11a39..b88e5a9345082 100644
--- a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/amd/sourcemapModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/amd/sourcemapModuleMultifolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/node/sourcemapModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/node/sourcemapModuleMultifolderSpecifyOutputDirectory.json
index cf7c46ad11a39..b88e5a9345082 100644
--- a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/node/sourcemapModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputDirectory/node/sourcemapModuleMultifolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/amd/sourcemapModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/amd/sourcemapModuleMultifolderSpecifyOutputFile.json
index 5f4ed3c9e6d37..5ef45d7a2bf81 100644
--- a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/amd/sourcemapModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/amd/sourcemapModuleMultifolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/node/sourcemapModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/node/sourcemapModuleMultifolderSpecifyOutputFile.json
index 8167c8755d70e..3f397d21470eb 100644
--- a/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/node/sourcemapModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapModuleMultifolderSpecifyOutputFile/node/sourcemapModuleMultifolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/amd/sourcemapModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/amd/sourcemapModuleSimpleNoOutdir.json
index 04b53d1020fbd..0328c9914f0a1 100644
--- a/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/amd/sourcemapModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/amd/sourcemapModuleSimpleNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/node/sourcemapModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/node/sourcemapModuleSimpleNoOutdir.json
index 04b53d1020fbd..0328c9914f0a1 100644
--- a/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/node/sourcemapModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapModuleSimpleNoOutdir/node/sourcemapModuleSimpleNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/amd/sourcemapModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/amd/sourcemapModuleSimpleSpecifyOutputDirectory.json
index a2d323fe872c7..ed11d857232e6 100644
--- a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/amd/sourcemapModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/amd/sourcemapModuleSimpleSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/node/sourcemapModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/node/sourcemapModuleSimpleSpecifyOutputDirectory.json
index a2d323fe872c7..ed11d857232e6 100644
--- a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/node/sourcemapModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputDirectory/node/sourcemapModuleSimpleSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/amd/sourcemapModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/amd/sourcemapModuleSimpleSpecifyOutputFile.json
index 152a40bc573b1..968443c40f850 100644
--- a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/amd/sourcemapModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/amd/sourcemapModuleSimpleSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/node/sourcemapModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/node/sourcemapModuleSimpleSpecifyOutputFile.json
index cdb829934f068..4287a57f845d3 100644
--- a/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/node/sourcemapModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapModuleSimpleSpecifyOutputFile/node/sourcemapModuleSimpleSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/amd/sourcemapModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/amd/sourcemapModuleSubfolderNoOutdir.json
index b9f300fe37db1..7c2604a204dbc 100644
--- a/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/amd/sourcemapModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/amd/sourcemapModuleSubfolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/node/sourcemapModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/node/sourcemapModuleSubfolderNoOutdir.json
index b9f300fe37db1..7c2604a204dbc 100644
--- a/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/node/sourcemapModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapModuleSubfolderNoOutdir/node/sourcemapModuleSubfolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/amd/sourcemapModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/amd/sourcemapModuleSubfolderSpecifyOutputDirectory.json
index 708028e4cb473..f37af38b003d8 100644
--- a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/amd/sourcemapModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/amd/sourcemapModuleSubfolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/node/sourcemapModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/node/sourcemapModuleSubfolderSpecifyOutputDirectory.json
index 708028e4cb473..f37af38b003d8 100644
--- a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/node/sourcemapModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputDirectory/node/sourcemapModuleSubfolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/amd/sourcemapModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/amd/sourcemapModuleSubfolderSpecifyOutputFile.json
index f9455330ff4e7..2e77077c1a94a 100644
--- a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/amd/sourcemapModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/amd/sourcemapModuleSubfolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/node/sourcemapModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/node/sourcemapModuleSubfolderSpecifyOutputFile.json
index 151376ed1d8a7..51f7e64041b82 100644
--- a/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/node/sourcemapModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapModuleSubfolderSpecifyOutputFile/node/sourcemapModuleSubfolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/amd/sourcemapMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/amd/sourcemapMultifolderNoOutdir.json
index a822e032bfc4a..df52282f135a8 100644
--- a/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/amd/sourcemapMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/amd/sourcemapMultifolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/node/sourcemapMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/node/sourcemapMultifolderNoOutdir.json
index a822e032bfc4a..df52282f135a8 100644
--- a/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/node/sourcemapMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapMultifolderNoOutdir/node/sourcemapMultifolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/amd/sourcemapMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/amd/sourcemapMultifolderSpecifyOutputDirectory.json
index 7b911bc9857ce..a571424b3927d 100644
--- a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/amd/sourcemapMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/amd/sourcemapMultifolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/node/sourcemapMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/node/sourcemapMultifolderSpecifyOutputDirectory.json
index 7b911bc9857ce..a571424b3927d 100644
--- a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/node/sourcemapMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputDirectory/node/sourcemapMultifolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/amd/sourcemapMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/amd/sourcemapMultifolderSpecifyOutputFile.json
index 8c6d41e7c4809..2be183ff65830 100644
--- a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/amd/sourcemapMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/amd/sourcemapMultifolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/node/sourcemapMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/node/sourcemapMultifolderSpecifyOutputFile.json
index 8c6d41e7c4809..2be183ff65830 100644
--- a/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/node/sourcemapMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapMultifolderSpecifyOutputFile/node/sourcemapMultifolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcemapSimpleNoOutdir/amd/sourcemapSimpleNoOutdir.json b/tests/baselines/reference/project/sourcemapSimpleNoOutdir/amd/sourcemapSimpleNoOutdir.json
index e87a7b6c38978..dedc11ce3ed71 100644
--- a/tests/baselines/reference/project/sourcemapSimpleNoOutdir/amd/sourcemapSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapSimpleNoOutdir/amd/sourcemapSimpleNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSimpleNoOutdir/node/sourcemapSimpleNoOutdir.json b/tests/baselines/reference/project/sourcemapSimpleNoOutdir/node/sourcemapSimpleNoOutdir.json
index e87a7b6c38978..dedc11ce3ed71 100644
--- a/tests/baselines/reference/project/sourcemapSimpleNoOutdir/node/sourcemapSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapSimpleNoOutdir/node/sourcemapSimpleNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/amd/sourcemapSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/amd/sourcemapSimpleSpecifyOutputDirectory.json
index 7046429aaba75..b5caaacbfc91a 100644
--- a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/amd/sourcemapSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/amd/sourcemapSimpleSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/node/sourcemapSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/node/sourcemapSimpleSpecifyOutputDirectory.json
index 7046429aaba75..b5caaacbfc91a 100644
--- a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/node/sourcemapSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputDirectory/node/sourcemapSimpleSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/amd/sourcemapSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/amd/sourcemapSimpleSpecifyOutputFile.json
index 85e737101b395..171c6b3fa895a 100644
--- a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/amd/sourcemapSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/amd/sourcemapSimpleSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/node/sourcemapSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/node/sourcemapSimpleSpecifyOutputFile.json
index 85e737101b395..171c6b3fa895a 100644
--- a/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/node/sourcemapSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapSimpleSpecifyOutputFile/node/sourcemapSimpleSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/amd/sourcemapSingleFileNoOutdir.json b/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/amd/sourcemapSingleFileNoOutdir.json
index 3441d5c6a4835..bc24b0b02f89a 100644
--- a/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/amd/sourcemapSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/amd/sourcemapSingleFileNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/node/sourcemapSingleFileNoOutdir.json b/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/node/sourcemapSingleFileNoOutdir.json
index 3441d5c6a4835..bc24b0b02f89a 100644
--- a/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/node/sourcemapSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapSingleFileNoOutdir/node/sourcemapSingleFileNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/amd/sourcemapSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/amd/sourcemapSingleFileSpecifyOutputDirectory.json
index 2b4661b72d618..398627aba0afa 100644
--- a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/amd/sourcemapSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/amd/sourcemapSingleFileSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/node/sourcemapSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/node/sourcemapSingleFileSpecifyOutputDirectory.json
index 2b4661b72d618..398627aba0afa 100644
--- a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/node/sourcemapSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputDirectory/node/sourcemapSingleFileSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/amd/sourcemapSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/amd/sourcemapSingleFileSpecifyOutputFile.json
index b951c8969f0db..632cbb9485070 100644
--- a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/amd/sourcemapSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/amd/sourcemapSingleFileSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/node/sourcemapSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/node/sourcemapSingleFileSpecifyOutputFile.json
index b951c8969f0db..632cbb9485070 100644
--- a/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/node/sourcemapSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapSingleFileSpecifyOutputFile/node/sourcemapSingleFileSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/amd/sourcemapSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/amd/sourcemapSubfolderNoOutdir.json
index efac57d108fba..50a5c31f190b0 100644
--- a/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/amd/sourcemapSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/amd/sourcemapSubfolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/node/sourcemapSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/node/sourcemapSubfolderNoOutdir.json
index efac57d108fba..50a5c31f190b0 100644
--- a/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/node/sourcemapSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcemapSubfolderNoOutdir/node/sourcemapSubfolderNoOutdir.json
@@ -9,6 +9,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/amd/sourcemapSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/amd/sourcemapSubfolderSpecifyOutputDirectory.json
index e40ece951dd6c..4ebbac59dda34 100644
--- a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/amd/sourcemapSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/amd/sourcemapSubfolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/node/sourcemapSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/node/sourcemapSubfolderSpecifyOutputDirectory.json
index e40ece951dd6c..4ebbac59dda34 100644
--- a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/node/sourcemapSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputDirectory/node/sourcemapSubfolderSpecifyOutputDirectory.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/amd/sourcemapSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/amd/sourcemapSubfolderSpecifyOutputFile.json
index e6d7e5bccb039..55e340576c426 100644
--- a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/amd/sourcemapSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/amd/sourcemapSubfolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/node/sourcemapSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/node/sourcemapSubfolderSpecifyOutputFile.json
index e6d7e5bccb039..55e340576c426 100644
--- a/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/node/sourcemapSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcemapSubfolderSpecifyOutputFile/node/sourcemapSubfolderSpecifyOutputFile.json
@@ -10,6 +10,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/amd/sourcerootUrlMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/amd/sourcerootUrlMixedSubfolderNoOutdir.json
index 42a7ecd93d59d..8a7f79e478414 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/amd/sourcerootUrlMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/amd/sourcerootUrlMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/node/sourcerootUrlMixedSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/node/sourcerootUrlMixedSubfolderNoOutdir.json
index 42a7ecd93d59d..8a7f79e478414 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/node/sourcerootUrlMixedSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderNoOutdir/node/sourcerootUrlMixedSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
index e7bbece8ed8c2..2fed55ae75e25 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
index e7bbece8ed8c2..2fed55ae75e25 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/amd/sourcerootUrlMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/amd/sourcerootUrlMixedSubfolderSpecifyOutputFile.json
index d9c3d06ec359d..52cda4cda4ca1 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/amd/sourcerootUrlMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/amd/sourcerootUrlMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/node/sourcerootUrlMixedSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/node/sourcerootUrlMixedSubfolderSpecifyOutputFile.json
index d9c3d06ec359d..52cda4cda4ca1 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/node/sourcerootUrlMixedSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFile/node/sourcerootUrlMixedSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 9518c0eaf0717..664d2fbc79510 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/amd/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
index 9518c0eaf0717..664d2fbc79510 100644
--- a/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory/node/sourcerootUrlMixedSubfolderSpecifyOutputFileAndOutputDirectory.json
@@ -12,6 +12,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/amd/sourcerootUrlModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/amd/sourcerootUrlModuleMultifolderNoOutdir.json
index de3e5ce76549e..2fdfb4b184224 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/amd/sourcerootUrlModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/amd/sourcerootUrlModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/node/sourcerootUrlModuleMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/node/sourcerootUrlModuleMultifolderNoOutdir.json
index de3e5ce76549e..2fdfb4b184224 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/node/sourcerootUrlModuleMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderNoOutdir/node/sourcerootUrlModuleMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
index 81609776e1d8e..27711bd31442e 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/amd/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
index 81609776e1d8e..27711bd31442e 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputDirectory/node/sourcerootUrlModuleMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/amd/sourcerootUrlModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/amd/sourcerootUrlModuleMultifolderSpecifyOutputFile.json
index 4eafa8707ee59..d52687f18ee57 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/amd/sourcerootUrlModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/amd/sourcerootUrlModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/node/sourcerootUrlModuleMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/node/sourcerootUrlModuleMultifolderSpecifyOutputFile.json
index 9744a562988fd..aa275509db3ce 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/node/sourcerootUrlModuleMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleMultifolderSpecifyOutputFile/node/sourcerootUrlModuleMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_module_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/amd/sourcerootUrlModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/amd/sourcerootUrlModuleSimpleNoOutdir.json
index 3d2f4d82e2d44..a020dd6db380c 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/amd/sourcerootUrlModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/amd/sourcerootUrlModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/node/sourcerootUrlModuleSimpleNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/node/sourcerootUrlModuleSimpleNoOutdir.json
index 3d2f4d82e2d44..a020dd6db380c 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/node/sourcerootUrlModuleSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSimpleNoOutdir/node/sourcerootUrlModuleSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json
index 38d54552cd6d4..c864c2d3766bb 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/amd/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/node/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/node/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json
index 38d54552cd6d4..c864c2d3766bb 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/node/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputDirectory/node/sourcerootUrlModuleSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/amd/sourcerootUrlModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/amd/sourcerootUrlModuleSimpleSpecifyOutputFile.json
index 0be5b600ef7c9..8deb90ce856d9 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/amd/sourcerootUrlModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/amd/sourcerootUrlModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/node/sourcerootUrlModuleSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/node/sourcerootUrlModuleSimpleSpecifyOutputFile.json
index 36831a27e856d..b8606f5e8f206 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/node/sourcerootUrlModuleSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSimpleSpecifyOutputFile/node/sourcerootUrlModuleSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/amd/sourcerootUrlModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/amd/sourcerootUrlModuleSubfolderNoOutdir.json
index 4f0ece6095fcf..9e1589bd95e91 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/amd/sourcerootUrlModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/amd/sourcerootUrlModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/node/sourcerootUrlModuleSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/node/sourcerootUrlModuleSubfolderNoOutdir.json
index 4f0ece6095fcf..9e1589bd95e91 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/node/sourcerootUrlModuleSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderNoOutdir/node/sourcerootUrlModuleSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
index cdd06e734f4dc..0da3eb3fb008b 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/amd/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
index cdd06e734f4dc..0da3eb3fb008b 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputDirectory/node/sourcerootUrlModuleSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/amd/sourcerootUrlModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/amd/sourcerootUrlModuleSubfolderSpecifyOutputFile.json
index 8c13f972a8852..e12d642b8a7cf 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/amd/sourcerootUrlModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/amd/sourcerootUrlModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/node/sourcerootUrlModuleSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/node/sourcerootUrlModuleSubfolderSpecifyOutputFile.json
index 52889e98705b7..4af06269858a6 100644
--- a/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/node/sourcerootUrlModuleSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlModuleSubfolderSpecifyOutputFile/node/sourcerootUrlModuleSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/amd/sourcerootUrlMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/amd/sourcerootUrlMultifolderNoOutdir.json
index aa7c358f44268..ba83a6fcf4dde 100644
--- a/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/amd/sourcerootUrlMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/amd/sourcerootUrlMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/node/sourcerootUrlMultifolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/node/sourcerootUrlMultifolderNoOutdir.json
index aa7c358f44268..ba83a6fcf4dde 100644
--- a/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/node/sourcerootUrlMultifolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlMultifolderNoOutdir/node/sourcerootUrlMultifolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/amd/sourcerootUrlMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/amd/sourcerootUrlMultifolderSpecifyOutputDirectory.json
index 1fbf6071c4ed9..e8ec5c9da4e73 100644
--- a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/amd/sourcerootUrlMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/amd/sourcerootUrlMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/node/sourcerootUrlMultifolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/node/sourcerootUrlMultifolderSpecifyOutputDirectory.json
index 1fbf6071c4ed9..e8ec5c9da4e73 100644
--- a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/node/sourcerootUrlMultifolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputDirectory/node/sourcerootUrlMultifolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/amd/sourcerootUrlMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/amd/sourcerootUrlMultifolderSpecifyOutputFile.json
index bb449513037db..b61ec6967e013 100644
--- a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/amd/sourcerootUrlMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/amd/sourcerootUrlMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/node/sourcerootUrlMultifolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/node/sourcerootUrlMultifolderSpecifyOutputFile.json
index bb449513037db..b61ec6967e013 100644
--- a/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/node/sourcerootUrlMultifolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlMultifolderSpecifyOutputFile/node/sourcerootUrlMultifolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "../outputdir_multifolder_ref/m2.ts",
         "test.ts"
diff --git a/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/amd/sourcerootUrlSimpleNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/amd/sourcerootUrlSimpleNoOutdir.json
index 6b4c31401df64..0bb0b4fb96243 100644
--- a/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/amd/sourcerootUrlSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/amd/sourcerootUrlSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/node/sourcerootUrlSimpleNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/node/sourcerootUrlSimpleNoOutdir.json
index 6b4c31401df64..0bb0b4fb96243 100644
--- a/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/node/sourcerootUrlSimpleNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlSimpleNoOutdir/node/sourcerootUrlSimpleNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/amd/sourcerootUrlSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/amd/sourcerootUrlSimpleSpecifyOutputDirectory.json
index f031a321ab16c..8d83bcbfa4a49 100644
--- a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/amd/sourcerootUrlSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/amd/sourcerootUrlSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/node/sourcerootUrlSimpleSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/node/sourcerootUrlSimpleSpecifyOutputDirectory.json
index f031a321ab16c..8d83bcbfa4a49 100644
--- a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/node/sourcerootUrlSimpleSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputDirectory/node/sourcerootUrlSimpleSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/amd/sourcerootUrlSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/amd/sourcerootUrlSimpleSpecifyOutputFile.json
index 48c0b49939c9e..ccef6f8bc0ed1 100644
--- a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/amd/sourcerootUrlSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/amd/sourcerootUrlSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/node/sourcerootUrlSimpleSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/node/sourcerootUrlSimpleSpecifyOutputFile.json
index 48c0b49939c9e..ccef6f8bc0ed1 100644
--- a/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/node/sourcerootUrlSimpleSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlSimpleSpecifyOutputFile/node/sourcerootUrlSimpleSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/amd/sourcerootUrlSingleFileNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/amd/sourcerootUrlSingleFileNoOutdir.json
index 9fdf263471875..a8ec7d985f71f 100644
--- a/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/amd/sourcerootUrlSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/amd/sourcerootUrlSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/node/sourcerootUrlSingleFileNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/node/sourcerootUrlSingleFileNoOutdir.json
index 9fdf263471875..a8ec7d985f71f 100644
--- a/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/node/sourcerootUrlSingleFileNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlSingleFileNoOutdir/node/sourcerootUrlSingleFileNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/amd/sourcerootUrlSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/amd/sourcerootUrlSingleFileSpecifyOutputDirectory.json
index 3b05fa22a175d..42bf8251c6834 100644
--- a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/amd/sourcerootUrlSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/amd/sourcerootUrlSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/node/sourcerootUrlSingleFileSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/node/sourcerootUrlSingleFileSpecifyOutputDirectory.json
index 3b05fa22a175d..42bf8251c6834 100644
--- a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/node/sourcerootUrlSingleFileSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputDirectory/node/sourcerootUrlSingleFileSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/amd/sourcerootUrlSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/amd/sourcerootUrlSingleFileSpecifyOutputFile.json
index 83d39ce3032b0..7ee955070277c 100644
--- a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/amd/sourcerootUrlSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/amd/sourcerootUrlSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/node/sourcerootUrlSingleFileSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/node/sourcerootUrlSingleFileSpecifyOutputFile.json
index 83d39ce3032b0..7ee955070277c 100644
--- a/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/node/sourcerootUrlSingleFileSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlSingleFileSpecifyOutputFile/node/sourcerootUrlSingleFileSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "test.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/amd/sourcerootUrlSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/amd/sourcerootUrlSubfolderNoOutdir.json
index 913dea4977e70..4df27f46f032c 100644
--- a/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/amd/sourcerootUrlSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/amd/sourcerootUrlSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/node/sourcerootUrlSubfolderNoOutdir.json b/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/node/sourcerootUrlSubfolderNoOutdir.json
index 913dea4977e70..4df27f46f032c 100644
--- a/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/node/sourcerootUrlSubfolderNoOutdir.json
+++ b/tests/baselines/reference/project/sourcerootUrlSubfolderNoOutdir/node/sourcerootUrlSubfolderNoOutdir.json
@@ -10,6 +10,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/amd/sourcerootUrlSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/amd/sourcerootUrlSubfolderSpecifyOutputDirectory.json
index 5ccc3eecec1ce..1f41e0112914c 100644
--- a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/amd/sourcerootUrlSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/amd/sourcerootUrlSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/node/sourcerootUrlSubfolderSpecifyOutputDirectory.json b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/node/sourcerootUrlSubfolderSpecifyOutputDirectory.json
index 5ccc3eecec1ce..1f41e0112914c 100644
--- a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/node/sourcerootUrlSubfolderSpecifyOutputDirectory.json
+++ b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputDirectory/node/sourcerootUrlSubfolderSpecifyOutputDirectory.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/amd/sourcerootUrlSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/amd/sourcerootUrlSubfolderSpecifyOutputFile.json
index 7b99cb02c7c70..c3a146b56e722 100644
--- a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/amd/sourcerootUrlSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/amd/sourcerootUrlSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/node/sourcerootUrlSubfolderSpecifyOutputFile.json b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/node/sourcerootUrlSubfolderSpecifyOutputFile.json
index 7b99cb02c7c70..c3a146b56e722 100644
--- a/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/node/sourcerootUrlSubfolderSpecifyOutputFile.json
+++ b/tests/baselines/reference/project/sourcerootUrlSubfolderSpecifyOutputFile/node/sourcerootUrlSubfolderSpecifyOutputFile.json
@@ -11,6 +11,8 @@
     "sourceRoot": "http://typescript.codeplex.com/",
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "ref/m1.ts",
         "test.ts"
     ],
diff --git a/tests/baselines/reference/project/specifyExcludeUsingRelativepath/amd/specifyExcludeUsingRelativepath.json b/tests/baselines/reference/project/specifyExcludeUsingRelativepath/amd/specifyExcludeUsingRelativepath.json
index 09fea457c511c..5da2d12ed996f 100644
--- a/tests/baselines/reference/project/specifyExcludeUsingRelativepath/amd/specifyExcludeUsingRelativepath.json
+++ b/tests/baselines/reference/project/specifyExcludeUsingRelativepath/amd/specifyExcludeUsingRelativepath.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/specifyExcludeUsingRelativepath/node/specifyExcludeUsingRelativepath.json b/tests/baselines/reference/project/specifyExcludeUsingRelativepath/node/specifyExcludeUsingRelativepath.json
index 09fea457c511c..5da2d12ed996f 100644
--- a/tests/baselines/reference/project/specifyExcludeUsingRelativepath/node/specifyExcludeUsingRelativepath.json
+++ b/tests/baselines/reference/project/specifyExcludeUsingRelativepath/node/specifyExcludeUsingRelativepath.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/amd/specifyExcludeUsingRelativepathWithAllowJS.json b/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/amd/specifyExcludeUsingRelativepathWithAllowJS.json
index ddc535263d2ce..0d793d94bf3e8 100644
--- a/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/amd/specifyExcludeUsingRelativepathWithAllowJS.json
+++ b/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/amd/specifyExcludeUsingRelativepathWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/node/specifyExcludeUsingRelativepathWithAllowJS.json b/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/node/specifyExcludeUsingRelativepathWithAllowJS.json
index ddc535263d2ce..0d793d94bf3e8 100644
--- a/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/node/specifyExcludeUsingRelativepathWithAllowJS.json
+++ b/tests/baselines/reference/project/specifyExcludeUsingRelativepathWithAllowJS/node/specifyExcludeUsingRelativepathWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/amd/specifyExcludeWithOutUsingRelativePath.json b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/amd/specifyExcludeWithOutUsingRelativePath.json
index 9e3b6cb04f457..7c8f51ea11026 100644
--- a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/amd/specifyExcludeWithOutUsingRelativePath.json
+++ b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/amd/specifyExcludeWithOutUsingRelativePath.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/node/specifyExcludeWithOutUsingRelativePath.json b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/node/specifyExcludeWithOutUsingRelativePath.json
index 9e3b6cb04f457..7c8f51ea11026 100644
--- a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/node/specifyExcludeWithOutUsingRelativePath.json
+++ b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePath/node/specifyExcludeWithOutUsingRelativePath.json
@@ -5,6 +5,8 @@
     "declaration": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/amd/specifyExcludeWithOutUsingRelativePathWithAllowJS.json b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/amd/specifyExcludeWithOutUsingRelativePathWithAllowJS.json
index 16afde3acf446..05018d02abd42 100644
--- a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/amd/specifyExcludeWithOutUsingRelativePathWithAllowJS.json
+++ b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/amd/specifyExcludeWithOutUsingRelativePathWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/node/specifyExcludeWithOutUsingRelativePathWithAllowJS.json b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/node/specifyExcludeWithOutUsingRelativePathWithAllowJS.json
index 16afde3acf446..05018d02abd42 100644
--- a/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/node/specifyExcludeWithOutUsingRelativePathWithAllowJS.json
+++ b/tests/baselines/reference/project/specifyExcludeWithOutUsingRelativePathWithAllowJS/node/specifyExcludeWithOutUsingRelativePathWithAllowJS.json
@@ -4,6 +4,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "a.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/visibilityOfTypeUsedAcrossModules.json b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/visibilityOfTypeUsedAcrossModules.json
index 9ea927e56c2ee..b7ca119530677 100644
--- a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/visibilityOfTypeUsedAcrossModules.json
+++ b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/amd/visibilityOfTypeUsedAcrossModules.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "fs.ts",
         "server.ts",
         "commands.ts"
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/visibilityOfTypeUsedAcrossModules.json b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/visibilityOfTypeUsedAcrossModules.json
index 9ea927e56c2ee..b7ca119530677 100644
--- a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/visibilityOfTypeUsedAcrossModules.json
+++ b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules/node/visibilityOfTypeUsedAcrossModules.json
@@ -7,6 +7,8 @@
     "baselineCheck": true,
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "fs.ts",
         "server.ts",
         "commands.ts"
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/amd/visibilityOfTypeUsedAcrossModules2.json b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/amd/visibilityOfTypeUsedAcrossModules2.json
index a4576cc7ff0aa..d1678028db77f 100644
--- a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/amd/visibilityOfTypeUsedAcrossModules2.json
+++ b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/amd/visibilityOfTypeUsedAcrossModules2.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/node/visibilityOfTypeUsedAcrossModules2.json b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/node/visibilityOfTypeUsedAcrossModules2.json
index a4576cc7ff0aa..d1678028db77f 100644
--- a/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/node/visibilityOfTypeUsedAcrossModules2.json
+++ b/tests/baselines/reference/project/visibilityOfTypeUsedAcrossModules2/node/visibilityOfTypeUsedAcrossModules2.json
@@ -6,6 +6,8 @@
     ],
     "resolvedInputFiles": [
         "lib.es5.d.ts",
+        "lib.decorators.d.ts",
+        "lib.decorators.legacy.d.ts",
         "main.ts"
     ],
     "emittedFiles": [
diff --git a/tests/baselines/reference/promisePermutations.errors.txt b/tests/baselines/reference/promisePermutations.errors.txt
index 7bc65540d1aa4..069760228de90 100644
--- a/tests/baselines/reference/promisePermutations.errors.txt
+++ b/tests/baselines/reference/promisePermutations.errors.txt
@@ -447,7 +447,7 @@ tests/cases/compiler/promisePermutations.ts(160,21): error TS2769: No overload m
 !!! error TS2769:   The last overload gave the following error.
 !!! error TS2769:     Argument of type '(x: any) => IPromise<string>' is not assignable to parameter of type '(error: any) => Promise<number>'.
 !!! error TS2769:       Property 'catch' is missing in type 'IPromise<string>' but required in type 'Promise<number>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1540:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
 !!! related TS2771 tests/cases/compiler/promisePermutations.ts:5:5: The last overload is declared here.
     var s10g = s10.then(testFunctionP, nIPromise, sIPromise).then(sPromise, sIPromise, sIPromise); // ok
     
diff --git a/tests/baselines/reference/promisePermutations2.errors.txt b/tests/baselines/reference/promisePermutations2.errors.txt
index 000994163afbb..570f1911c9e4c 100644
--- a/tests/baselines/reference/promisePermutations2.errors.txt
+++ b/tests/baselines/reference/promisePermutations2.errors.txt
@@ -351,7 +351,7 @@ tests/cases/compiler/promisePermutations2.ts(159,21): error TS2345: Argument of
                                        ~~~~~~~~~
 !!! error TS2345: Argument of type '(x: any) => IPromise<string>' is not assignable to parameter of type '(error: any) => Promise<number>'.
 !!! error TS2345:   Property 'catch' is missing in type 'IPromise<string>' but required in type 'Promise<number>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1540:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
     var s10g = s10.then(testFunctionP, nIPromise, sIPromise).then(sPromise, sIPromise, sIPromise); // ok
     
     var r11: IPromise<number>;
diff --git a/tests/baselines/reference/promisePermutations3.errors.txt b/tests/baselines/reference/promisePermutations3.errors.txt
index e0c7a897ed481..ad198fb310013 100644
--- a/tests/baselines/reference/promisePermutations3.errors.txt
+++ b/tests/baselines/reference/promisePermutations3.errors.txt
@@ -398,7 +398,7 @@ tests/cases/compiler/promisePermutations3.ts(165,21): error TS2345: Argument of
 !!! error TS2769:   The last overload gave the following error.
 !!! error TS2769:     Argument of type '(x: any) => IPromise<string>' is not assignable to parameter of type '(error: any) => Promise<number>'.
 !!! error TS2769:       Property 'catch' is missing in type 'IPromise<string>' but required in type 'Promise<number>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1540:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
 !!! related TS2771 tests/cases/compiler/promisePermutations3.ts:7:5: The last overload is declared here.
     var s10g = s10.then(testFunctionP, nIPromise, sIPromise).then(sPromise, sIPromise, sIPromise); // ok
     
@@ -445,5 +445,5 @@ tests/cases/compiler/promisePermutations3.ts(165,21): error TS2345: Argument of
                         ~~~~~~~~~~~~~~~
 !!! error TS2345: Argument of type '{ <T>(x: T): IPromise<T>; <T>(x: T, y: T): Promise<T>; }' is not assignable to parameter of type '(value: (x: any) => any) => Promise<unknown>'.
 !!! error TS2345:   Property 'catch' is missing in type 'IPromise<any>' but required in type 'Promise<unknown>'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1540:5: 'catch' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1538:5: 'catch' is declared here.
     var s12c = s12.then(testFunction12P, testFunction12, testFunction12); // ok
\ No newline at end of file
diff --git a/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json b/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
index b82c1948d272b..1df1348cd42ce 100644
--- a/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
+++ b/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
@@ -45,5 +45,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json b/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
index cbd4fcb8704ed..8e96e0cc2a33e 100644
--- a/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
+++ b/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
@@ -39,5 +39,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/redefineArray.errors.txt b/tests/baselines/reference/redefineArray.errors.txt
index 468b3e9e823c2..24f7d9a356eb8 100644
--- a/tests/baselines/reference/redefineArray.errors.txt
+++ b/tests/baselines/reference/redefineArray.errors.txt
@@ -5,4 +5,4 @@ tests/cases/compiler/redefineArray.ts(1,1): error TS2741: Property 'isArray' is
     Array = function (n:number, s:string) {return n;};
     ~~~~~
 !!! error TS2741: Property 'isArray' is missing in type '<T>(n: number, s: string) => number' but required in type 'ArrayConstructor'.
-!!! related TS2728 /.ts/lib.es5.d.ts:1491:5: 'isArray' is declared here.
\ No newline at end of file
+!!! related TS2728 /.ts/lib.es5.d.ts:1494:5: 'isArray' is declared here.
\ No newline at end of file
diff --git a/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=node16).trace.json b/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=node16).trace.json
index 6d8b992bfbc76..07fb87e30c1dc 100644
--- a/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=node16).trace.json
+++ b/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=node16).trace.json
@@ -92,5 +92,9 @@
     "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups.",
     "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File 'package.json' does not exist according to earlier cached lookups.",
     "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt b/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt
index 35fa62b19fdd6..45e3b25526bcd 100644
--- a/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt
+++ b/tests/baselines/reference/scannerS7.2_A1.5_T2.errors.txt
@@ -19,7 +19,7 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.2_A1.5_T2.ts(20,3): error
       $ERROR('#1: eval("\\u00A0var x\\u00A0= 1\\u00A0"); x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     
     //CHECK#2
@@ -28,7 +28,7 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.2_A1.5_T2.ts(20,3): error
       $ERROR('#2:  var x = 1 ; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     
     
diff --git a/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt b/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt
index 24fcaa0338f92..0e33986fca7bc 100644
--- a/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt
+++ b/tests/baselines/reference/scannerS7.3_A1.1_T2.errors.txt
@@ -21,7 +21,7 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.3_A1.1_T2.ts(17,3): error
       $ERROR('#1: var\\nx\\n=\\n1\\n; x === 1. Actual: ' + (x));
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     
     
\ No newline at end of file
diff --git a/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt b/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt
index e27597c7c66a8..3ca2bfc9437ed 100644
--- a/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt
+++ b/tests/baselines/reference/scannerS7.6_A4.2_T1.errors.txt
@@ -50,70 +50,70 @@ tests/cases/conformance/scanner/ecmascript5/scannerS7.6_A4.2_T1.ts(142,3): error
       $ERROR('#А');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0411 = 1;
     if (Б !== 1) {
       $ERROR('#Б');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0412 = 1;
     if (В !== 1) {
       $ERROR('#В');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0413 = 1;
     if (Г !== 1) {
       $ERROR('#Г');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0414 = 1;
     if (Д !== 1) {
       $ERROR('#Д');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0415 = 1;
     if (Е !== 1) {
       $ERROR('#Е');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0416 = 1;
     if (Ж !== 1) {
       $ERROR('#Ж');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0417 = 1;
     if (З !== 1) {
       $ERROR('#З');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0418 = 1;
     if (И !== 1) {
       $ERROR('#И');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u0419 = 1;
     if (Й !== 1) {
       $ERROR('#Й');
       ~~~~~~
 !!! error TS2552: Cannot find name '$ERROR'. Did you mean 'Error'?
-!!! related TS2728 /.ts/lib.es5.d.ts:1064:13: 'Error' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:1067:13: 'Error' is declared here.
     }
     var \u041A = 1;
     if (К !== 1) {
diff --git a/tests/baselines/reference/sourceMapValidationDecorators.js.map b/tests/baselines/reference/sourceMapValidationDecorators.js.map
index c980e54efb237..21c6fae6e74fc 100644
--- a/tests/baselines/reference/sourceMapValidationDecorators.js.map
+++ b/tests/baselines/reference/sourceMapValidationDecorators.js.map
@@ -1,3 +1,3 @@
 //// [sourceMapValidationDecorators.js.map]
-{"version":3,"file":"sourceMapValidationDecorators.js","sourceRoot":"","sources":["sourceMapValidationDecorators.ts"],"names":[],"mappings":";;;;;;;;;AASA;IACI,iBAGS,QAAgB;QAIvB,WAAc;aAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;YAAd,0BAAc;;QAJP,aAAQ,GAAR,QAAQ,CAAQ;IAKzB,CAAC;IAID,uBAAK,GAAL;QACI,OAAO,MAAM,GAAG,IAAI,CAAC,QAAQ,GAAG,OAAO,CAAC;IAC5C,CAAC;IAUO,oBAAE,GAAV,UAGE,CAAS;QACP,OAAO,IAAI,CAAC,QAAQ,CAAC;IACzB,CAAC;IAED,sBAEI,8BAAS;aAFb;YAGI,OAAO,IAAI,CAAC,QAAQ,CAAC;QACzB,CAAC;aAED,UAGE,SAAiB;YACf,IAAI,CAAC,QAAQ,GAAG,SAAS,CAAC;QAC9B,CAAC;;;OAPA;IAbc,UAAE,GAAW,EAAG,CAAA;IAV/B;QAFC,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;wCAGtB;IAID;QAFC,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;sCACL;IAMlB;QACG,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;qCAGzB;IAED;QAAC,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;QAMpB,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;4CAJzB;IAbc;QAFd,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;6BACQ;IAvB7B,OAAO;QAFZ,eAAe;QACf,eAAe,CAAC,EAAE,CAAC;QAGb,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;QAGvB,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;OAPxB,OAAO,CA4CZ;IAAD,cAAC;CAAA,AA9CD,IA8CC"}
-//// https://sokra.github.io/source-map-visualization#base64,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,eyJ2ZXJzaW9uIjozLCJmaWxlIjoic291cmNlTWFwVmFsaWRhdGlvbkRlY29yYXRvcnMuanMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJzb3VyY2VNYXBWYWxpZGF0aW9uRGVjb3JhdG9ycy50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7Ozs7Ozs7QUFTQTtJQUNJLGlCQUdTLFFBQWdCO1FBSXZCLFdBQWM7YUFBZCxVQUFjLEVBQWQscUJBQWMsRUFBZCxJQUFjO1lBQWQsMEJBQWM7O1FBSlAsYUFBUSxHQUFSLFFBQVEsQ0FBUTtJQUt6QixDQUFDO0lBSUQsdUJBQUssR0FBTDtRQUNJLE9BQU8sTUFBTSxHQUFHLElBQUksQ0FBQyxRQUFRLEdBQUcsT0FBTyxDQUFDO0lBQzVDLENBQUM7SUFVTyxvQkFBRSxHQUFWLFVBR0UsQ0FBUztRQUNQLE9BQU8sSUFBSSxDQUFDLFFBQVEsQ0FBQztJQUN6QixDQUFDO0lBRUQsc0JBRUksOEJBQVM7YUFGYjtZQUdJLE9BQU8sSUFBSSxDQUFDLFFBQVEsQ0FBQztRQUN6QixDQUFDO2FBRUQsVUFHRSxTQUFpQjtZQUNmLElBQUksQ0FBQyxRQUFRLEdBQUcsU0FBUyxDQUFDO1FBQzlCLENBQUM7OztPQVBBO0lBYmMsVUFBRSxHQUFXLEVBQUcsQ0FBQTtJQVYvQjtRQUZDLGtCQUFrQjtRQUNsQixrQkFBa0IsQ0FBQyxFQUFFLENBQUM7d0NBR3RCO0lBSUQ7UUFGQyxrQkFBa0I7UUFDbEIsa0JBQWtCLENBQUMsRUFBRSxDQUFDO3NDQUNMO0lBTWxCO1FBQ0csV0FBQSxtQkFBbUIsQ0FBQTtRQUNuQixXQUFBLG1CQUFtQixDQUFDLEVBQUUsQ0FBQyxDQUFBO3FDQUd6QjtJQUVEO1FBQUMsa0JBQWtCO1FBQ2xCLGtCQUFrQixDQUFDLEVBQUUsQ0FBQztRQU1wQixXQUFBLG1CQUFtQixDQUFBO1FBQ25CLFdBQUEsbUJBQW1CLENBQUMsRUFBRSxDQUFDLENBQUE7NENBSnpCO0lBYmM7UUFGZCxrQkFBa0I7UUFDbEIsa0JBQWtCLENBQUMsRUFBRSxDQUFDOzZCQUNRO0lBdkI3QixPQUFPO1FBRlosZUFBZTtRQUNmLGVBQWUsQ0FBQyxFQUFFLENBQUM7UUFHYixXQUFBLG1CQUFtQixDQUFBO1FBQ25CLFdBQUEsbUJBQW1CLENBQUMsRUFBRSxDQUFDLENBQUE7UUFHdkIsV0FBQSxtQkFBbUIsQ0FBQTtRQUNuQixXQUFBLG1CQUFtQixDQUFDLEVBQUUsQ0FBQyxDQUFBO09BUHhCLE9BQU8sQ0E0Q1o7SUFBRCxjQUFDO0NBQUEsQUE5Q0QsSUE4Q0MifQ==,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
+{"version":3,"file":"sourceMapValidationDecorators.js","sourceRoot":"","sources":["sourceMapValidationDecorators.ts"],"names":[],"mappings":";;;;;;;;;AASA;IACI,iBAGS,QAAgB;QAIvB,WAAc;aAAd,UAAc,EAAd,qBAAc,EAAd,IAAc;YAAd,0BAAc;;QAJP,aAAQ,GAAR,QAAQ,CAAQ;IAKzB,CAAC;IAID,uBAAK,GAAL;QACI,OAAO,MAAM,GAAG,IAAI,CAAC,QAAQ,GAAG,OAAO,CAAC;IAC5C,CAAC;IAUO,oBAAE,GAAF,UAGN,CAAS;QACP,OAAO,IAAI,CAAC,QAAQ,CAAC;IACzB,CAAC;IAID,sBAAI,8BAAS;aAAb;YACI,OAAO,IAAI,CAAC,QAAQ,CAAC;QACzB,CAAC;aAED,UAGE,SAAiB;YACf,IAAI,CAAC,QAAQ,GAAG,SAAS,CAAC;QAC9B,CAAC;;;OAPA;IAbc,UAAE,GAAW,EAAE,AAAb,CAAc;IAV/B;QAFC,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;wCAGtB;IAIO;QAFP,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;sCACL;IAMV;QACL,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;qCAGzB;IAID;QAFC,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;QAMpB,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;4CAJzB;IAbc;QAFd,kBAAkB;QAClB,kBAAkB,CAAC,EAAE,CAAC;6BACQ;IAvB7B,OAAO;QAFZ,eAAe;QACf,eAAe,CAAC,EAAE,CAAC;QAGb,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;QAGvB,WAAA,mBAAmB,CAAA;QACnB,WAAA,mBAAmB,CAAC,EAAE,CAAC,CAAA;OAPxB,OAAO,CA4CZ;IAAD,cAAC;CAAA,AA5CD,IA4CC"}
+//// https://sokra.github.io/source-map-visualization#base64,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,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,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
diff --git a/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt b/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt
index 45c46f1eb1552..bac66cde505a7 100644
--- a/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt
+++ b/tests/baselines/reference/sourceMapValidationDecorators.sourcemap.txt
@@ -198,14 +198,14 @@ sourceFile:sourceMapValidationDecorators.ts
   >    private 
 2 >    fn
 3 >                        
-4 >                           private fn(
+4 >                           fn(
   >                                 @ParameterDecorator1 
   >                                 @ParameterDecorator2(70) 
   >                                 
 5 >                                     x: number
 1->Emitted(21, 5) Source(35, 13) + SourceIndex(0)
 2 >Emitted(21, 25) Source(35, 15) + SourceIndex(0)
-3 >Emitted(21, 28) Source(35, 5) + SourceIndex(0)
+3 >Emitted(21, 28) Source(35, 13) + SourceIndex(0)
 4 >Emitted(21, 38) Source(38, 7) + SourceIndex(0)
 5 >Emitted(21, 39) Source(38, 16) + SourceIndex(0)
 ---
@@ -246,12 +246,12 @@ sourceFile:sourceMapValidationDecorators.ts
 3 >                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 1->
   >
+  >    @PropertyDecorator1
+  >    @PropertyDecorator2(80)
   >    
-2 >    @PropertyDecorator1
-  >        @PropertyDecorator2(80)
-  >        get 
+2 >    get 
 3 >                          greetings
-1->Emitted(24, 5) Source(42, 5) + SourceIndex(0)
+1->Emitted(24, 5) Source(44, 5) + SourceIndex(0)
 2 >Emitted(24, 27) Source(44, 9) + SourceIndex(0)
 3 >Emitted(24, 57) Source(44, 18) + SourceIndex(0)
 ---
@@ -259,7 +259,7 @@ sourceFile:sourceMapValidationDecorators.ts
 1 >^^^^^^^^^^^^^
 2 >             ^^^^^^^^^^^^^^^^^^^^^->
 1 >
-1 >Emitted(25, 14) Source(42, 5) + SourceIndex(0)
+1 >Emitted(25, 14) Source(44, 5) + SourceIndex(0)
 ---
 >>>            return this.greeting;
 1->^^^^^^^^^^^^
@@ -268,9 +268,7 @@ sourceFile:sourceMapValidationDecorators.ts
 4 >                       ^
 5 >                        ^^^^^^^^
 6 >                                ^
-1->@PropertyDecorator1
-  >    @PropertyDecorator2(80)
-  >    get greetings() {
+1->get greetings() {
   >        
 2 >            return 
 3 >                   this
@@ -358,17 +356,20 @@ sourceFile:sourceMapValidationDecorators.ts
 2 >    ^^^^^^^^^^
 3 >              ^^^
 4 >                 ^^
-5 >                   ^
+5 >                   
+6 >                   ^
 1->
 2 >    x1
 3 >              : number = 
-4 >                 10;
+4 >                 10
 5 >                   
+6 >                   : number = 10;
 1->Emitted(34, 5) Source(33, 20) + SourceIndex(0)
 2 >Emitted(34, 15) Source(33, 22) + SourceIndex(0)
 3 >Emitted(34, 18) Source(33, 33) + SourceIndex(0)
-4 >Emitted(34, 20) Source(33, 36) + SourceIndex(0)
-5 >Emitted(34, 21) Source(33, 36) + SourceIndex(0)
+4 >Emitted(34, 20) Source(33, 35) + SourceIndex(0)
+5 >Emitted(34, 20) Source(33, 22) + SourceIndex(0)
+6 >Emitted(34, 21) Source(33, 36) + SourceIndex(0)
 ---
 >>>    __decorate([
 1 >^^^^
@@ -419,8 +420,8 @@ sourceFile:sourceMapValidationDecorators.ts
   >
   >    @PropertyDecorator1
   >    @PropertyDecorator2(50)
-  >    
-1 >Emitted(39, 5) Source(29, 5) + SourceIndex(0)
+  >    private 
+1 >Emitted(39, 5) Source(29, 13) + SourceIndex(0)
 ---
 >>>        PropertyDecorator1,
 1->^^^^^^^^
@@ -465,8 +466,8 @@ sourceFile:sourceMapValidationDecorators.ts
   >    @PropertyDecorator2(60)
   >    private static x1: number = 10;
   >    
-  >    
-1 >Emitted(43, 5) Source(35, 5) + SourceIndex(0)
+  >    private 
+1 >Emitted(43, 5) Source(35, 13) + SourceIndex(0)
 ---
 >>>        __param(0, ParameterDecorator1),
 1->^^^^^^^^
@@ -474,7 +475,7 @@ sourceFile:sourceMapValidationDecorators.ts
 3 >                   ^^^^^^^^^^^^^^^^^^^
 4 >                                      ^
 5 >                                       ^^^^^->
-1->private fn(
+1->fn(
   >      @
 2 >        
 3 >                   ParameterDecorator1
@@ -521,14 +522,16 @@ sourceFile:sourceMapValidationDecorators.ts
 2 >    ^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >
   >
+  >    @PropertyDecorator1
+  >    @PropertyDecorator2(80)
   >    
-1 >Emitted(47, 5) Source(42, 5) + SourceIndex(0)
+1 >Emitted(47, 5) Source(44, 5) + SourceIndex(0)
 ---
 >>>        PropertyDecorator1,
 1->^^^^^^^^
 2 >        ^^^^^^^^^^^^^^^^^^
 3 >                          ^^^^^^->
-1->@
+1->
 2 >        PropertyDecorator1
 1->Emitted(48, 9) Source(42, 6) + SourceIndex(0)
 2 >Emitted(48, 27) Source(42, 24) + SourceIndex(0)
@@ -835,9 +838,7 @@ sourceFile:sourceMapValidationDecorators.ts
 4 >     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^->
 1 >
 2 > 
-3 > @ClassDecorator1
-  > @ClassDecorator2(10)
-  > class Greeter {
+3 > class Greeter {
   >     constructor(
   >       @ParameterDecorator1 
   >       @ParameterDecorator2(20) 
@@ -883,7 +884,7 @@ sourceFile:sourceMapValidationDecorators.ts
   >     }    
   > }
 1 >Emitted(66, 2) Source(54, 2) + SourceIndex(0)
-2 >Emitted(66, 2) Source(8, 1) + SourceIndex(0)
+2 >Emitted(66, 2) Source(10, 1) + SourceIndex(0)
 3 >Emitted(66, 6) Source(54, 2) + SourceIndex(0)
 ---
 >>>//# sourceMappingURL=sourceMapValidationDecorators.js.map
\ No newline at end of file
diff --git a/tests/baselines/reference/staticFieldWithInterfaceContext.js b/tests/baselines/reference/staticFieldWithInterfaceContext.js
index f8886b4812e00..eb51f8dad1a6f 100644
--- a/tests/baselines/reference/staticFieldWithInterfaceContext.js
+++ b/tests/baselines/reference/staticFieldWithInterfaceContext.js
@@ -27,12 +27,17 @@ let [ c11 = class { static x = { a: "a" } } ]: I[] = [class { static x = { a: "a
 
 
 //// [staticFieldWithInterfaceContext.js]
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m, _o, _p, _q;
 var c = (_a = /** @class */ (function () {
         function class_1() {
         }
         return class_1;
     }()),
+    __setFunctionName(_a, "c"),
     // should typecheck the same as the last line
     _a.x = { a: "a" },
     _a);
@@ -44,6 +49,7 @@ var c2 = (_c = /** @class */ (function () {
         return class_2;
     }()),
     _b = ex,
+    __setFunctionName(_c, "c2"),
     _c[_b] = { a: "a" },
     _c);
 c[ex] = { a: "a" };
@@ -54,6 +60,7 @@ function f(c) {
             }
             return class_3;
         }()),
+        __setFunctionName(_a, "c"),
         _a.x = { a: "a" },
         _a); }
 }
@@ -62,6 +69,7 @@ var c3 = { c: (_d = /** @class */ (function () {
             }
             return class_4;
         }()),
+        __setFunctionName(_d, "c"),
         _d.x = { a: "a" },
         _d) }.c;
 var _r = {}.c, c4 = _r === void 0 ? (_e = /** @class */ (function () {
@@ -69,6 +77,7 @@ var _r = {}.c, c4 = _r === void 0 ? (_e = /** @class */ (function () {
         }
         return class_5;
     }()),
+    __setFunctionName(_e, "c4"),
     _e.x = { a: "a" },
     _e) : _r;
 var _s = { c: (_g = /** @class */ (function () {
@@ -76,12 +85,14 @@ var _s = { c: (_g = /** @class */ (function () {
             }
             return class_6;
         }()),
+        __setFunctionName(_g, "c"),
         _g.x = { a: "a" },
         _g) }.c, c5 = _s === void 0 ? (_f = /** @class */ (function () {
         function class_7() {
         }
         return class_7;
     }()),
+    __setFunctionName(_f, "c5"),
     _f.x = { a: "a" },
     _f) : _s;
 var c6 = [(_h = /** @class */ (function () {
@@ -103,6 +114,7 @@ var _t = [][0], c8 = _t === void 0 ? (_k = /** @class */ (function () {
         }
         return class_10;
     }()),
+    __setFunctionName(_k, "c8"),
     _k.x = { a: "a" },
     _k) : _t;
 var _u = [][0], c9 = _u === void 0 ? (_l = /** @class */ (function () {
@@ -110,6 +122,7 @@ var _u = [][0], c9 = _u === void 0 ? (_l = /** @class */ (function () {
         }
         return class_11;
     }()),
+    __setFunctionName(_l, "c9"),
     _l.x = { a: "a" },
     _l) : _u;
 var _v = [(_o = /** @class */ (function () {
@@ -123,6 +136,7 @@ var _v = [(_o = /** @class */ (function () {
         }
         return class_13;
     }()),
+    __setFunctionName(_m, "c10"),
     _m.x = { a: "a" },
     _m) : _v;
 var _w = [(_q = /** @class */ (function () {
@@ -136,5 +150,6 @@ var _w = [(_q = /** @class */ (function () {
         }
         return class_15;
     }()),
+    __setFunctionName(_p, "c11"),
     _p.x = { a: "a" },
     _p) : _w;
diff --git a/tests/baselines/reference/systemModuleTargetES6.js b/tests/baselines/reference/systemModuleTargetES6.js
index 0df2835683e82..943e57ff742ac 100644
--- a/tests/baselines/reference/systemModuleTargetES6.js
+++ b/tests/baselines/reference/systemModuleTargetES6.js
@@ -35,8 +35,8 @@ System.register([], function (exports_1, context_1) {
             MyClass2 = class MyClass2 {
                 static getInstance() { return MyClass2.value; }
             };
-            exports_1("MyClass2", MyClass2);
             MyClass2.value = 42;
+            exports_1("MyClass2", MyClass2);
         }
     };
 });
diff --git a/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1.errors.txt b/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1.errors.txt
index a9e6e98b25080..7222dcffe926c 100644
--- a/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1.errors.txt
+++ b/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1.errors.txt
@@ -38,7 +38,7 @@ tests/cases/conformance/es6/templates/taggedTemplateStringsWithOverloadResolutio
                 ~~
 !!! error TS2345: Argument of type 'undefined[]' is not assignable to parameter of type 'TemplateStringsArray'.
 !!! error TS2345:   Property 'raw' is missing in type 'undefined[]' but required in type 'TemplateStringsArray'.
-!!! related TS2728 /.ts/lib.es5.d.ts:608:14: 'raw' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:611:14: 'raw' is declared here.
 !!! related TS2793 tests/cases/conformance/es6/templates/taggedTemplateStringsWithOverloadResolution1.ts:5:10: The call would have succeeded against this implementation, but implementation signatures of overloads are not externally visible.
     var b = foo([], 1);          // string
                 ~~
diff --git a/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1_ES6.errors.txt b/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1_ES6.errors.txt
index 6997efce9afd2..b7d6f9b7ab011 100644
--- a/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1_ES6.errors.txt
+++ b/tests/baselines/reference/taggedTemplateStringsWithOverloadResolution1_ES6.errors.txt
@@ -38,7 +38,7 @@ tests/cases/conformance/es6/templates/taggedTemplateStringsWithOverloadResolutio
                 ~~
 !!! error TS2345: Argument of type 'undefined[]' is not assignable to parameter of type 'TemplateStringsArray'.
 !!! error TS2345:   Property 'raw' is missing in type 'undefined[]' but required in type 'TemplateStringsArray'.
-!!! related TS2728 /.ts/lib.es5.d.ts:608:14: 'raw' is declared here.
+!!! related TS2728 /.ts/lib.es5.d.ts:611:14: 'raw' is declared here.
 !!! related TS2793 tests/cases/conformance/es6/templates/taggedTemplateStringsWithOverloadResolution1_ES6.ts:5:10: The call would have succeeded against this implementation, but implementation signatures of overloads are not externally visible.
     var b = foo([], 1);          // string
                 ~~
diff --git a/tests/baselines/reference/targetEs6DecoratorMetadataImportNotElided.js b/tests/baselines/reference/targetEs6DecoratorMetadataImportNotElided.js
index d4781b57b5ca5..891f04581f436 100644
--- a/tests/baselines/reference/targetEs6DecoratorMetadataImportNotElided.js
+++ b/tests/baselines/reference/targetEs6DecoratorMetadataImportNotElided.js
@@ -35,7 +35,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
     if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
 };
 import { Input, TemplateRef } from './deps';
-var MyComponent = /** @class */ (function () {
+export var MyComponent = /** @class */ (function () {
     function MyComponent() {
     }
     Object.defineProperty(MyComponent.prototype, "ref", {
@@ -51,4 +51,3 @@ var MyComponent = /** @class */ (function () {
     ], MyComponent.prototype, "ref", null);
     return MyComponent;
 }());
-export { MyComponent };
diff --git a/tests/baselines/reference/templateLiteralsAndDecoratorMetadata.js b/tests/baselines/reference/templateLiteralsAndDecoratorMetadata.js
index 59d7140ab6ddf..ee5315028f5ab 100644
--- a/tests/baselines/reference/templateLiteralsAndDecoratorMetadata.js
+++ b/tests/baselines/reference/templateLiteralsAndDecoratorMetadata.js
@@ -18,7 +18,7 @@ var __metadata = (this && this.__metadata) || function (k, v) {
 };
 Object.defineProperty(exports, "__esModule", { value: true });
 exports.Greeter = void 0;
-var Greeter = /** @class */ (function () {
+var Greeter = exports.Greeter = /** @class */ (function () {
     function Greeter() {
         this.greeting = "employee"; //template literals on this line cause the issue
     }
@@ -28,4 +28,3 @@ var Greeter = /** @class */ (function () {
     ], Greeter.prototype, "greeting", void 0);
     return Greeter;
 }());
-exports.Greeter = Greeter;
diff --git a/tests/baselines/reference/thisTypeInFunctionsNegative.errors.txt b/tests/baselines/reference/thisTypeInFunctionsNegative.errors.txt
index 0c9dd0264d248..707e534988d01 100644
--- a/tests/baselines/reference/thisTypeInFunctionsNegative.errors.txt
+++ b/tests/baselines/reference/thisTypeInFunctionsNegative.errors.txt
@@ -74,12 +74,11 @@ tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(158,17): e
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(162,9): error TS2681: A constructor cannot have a 'this' parameter.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(164,31): error TS2681: A constructor cannot have a 'this' parameter.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(165,30): error TS2680: A 'this' parameter must be the first parameter.
-tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(168,26): error TS1359: Identifier expected. 'this' is a reserved word that cannot be used here.
-tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(168,26): error TS2680: A 'this' parameter must be the first parameter.
+tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(168,20): error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(169,23): error TS1359: Identifier expected. 'this' is a reserved word that cannot be used here.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(169,23): error TS2680: A 'this' parameter must be the first parameter.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(170,23): error TS1005: ',' expected.
-tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(171,20): error TS1433: Decorators may not be applied to 'this' parameters.
+tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(171,20): error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(172,30): error TS1005: ',' expected.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(172,32): error TS1359: Identifier expected. 'new' is a reserved word that cannot be used here.
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(172,37): error TS1005: ',' expected.
@@ -94,7 +93,7 @@ tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(177,19): e
 tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(178,22): error TS2730: An arrow function cannot have a 'this' parameter.
 
 
-==== tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts (64 errors) ====
+==== tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts (63 errors) ====
     class C {
         n: number;
         explicitThis(this: this, m: number): number {
@@ -393,10 +392,8 @@ tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(178,22): e
     
     ///// parse errors /////
     function modifiers(async this: C): number { return this.n; }
-                             ~~~~
-!!! error TS1359: Identifier expected. 'this' is a reserved word that cannot be used here.
-                             ~~~~~~~
-!!! error TS2680: A 'this' parameter must be the first parameter.
+                       ~~~~~
+!!! error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
     function restParam(...this: C): number { return this.n; }
                           ~~~~
 !!! error TS1359: Identifier expected. 'this' is a reserved word that cannot be used here.
@@ -407,7 +404,7 @@ tests/cases/conformance/types/thisType/thisTypeInFunctionsNegative.ts(178,22): e
 !!! error TS1005: ',' expected.
     function decorated(@deco() this: C): number { return this.n; }
                        ~~~~~~~
-!!! error TS1433: Decorators may not be applied to 'this' parameters.
+!!! error TS1433: Neither decorators nor modifiers may be applied to 'this' parameters.
     function initializer(this: C = new C()): number { return this.n; }
                                  ~
 !!! error TS1005: ',' expected.
diff --git a/tests/baselines/reference/thisTypeInFunctionsNegative.symbols b/tests/baselines/reference/thisTypeInFunctionsNegative.symbols
index d275ba895574b..6a2d15565d148 100644
--- a/tests/baselines/reference/thisTypeInFunctionsNegative.symbols
+++ b/tests/baselines/reference/thisTypeInFunctionsNegative.symbols
@@ -627,9 +627,11 @@ function notFirst(a: number, this: C): number { return this.n; }
 ///// parse errors /////
 function modifiers(async this: C): number { return this.n; }
 >modifiers : Symbol(modifiers, Decl(thisTypeInFunctionsNegative.ts, 164, 64))
-> : Symbol((Missing), Decl(thisTypeInFunctionsNegative.ts, 167, 19))
->this : Symbol(this, Decl(thisTypeInFunctionsNegative.ts, 167, 24))
+>this : Symbol(this, Decl(thisTypeInFunctionsNegative.ts, 167, 19))
 >C : Symbol(C, Decl(thisTypeInFunctionsNegative.ts, 0, 0))
+>this.n : Symbol(C.n, Decl(thisTypeInFunctionsNegative.ts, 0, 9))
+>this : Symbol(this, Decl(thisTypeInFunctionsNegative.ts, 167, 19))
+>n : Symbol(C.n, Decl(thisTypeInFunctionsNegative.ts, 0, 9))
 
 function restParam(...this: C): number { return this.n; }
 >restParam : Symbol(restParam, Decl(thisTypeInFunctionsNegative.ts, 167, 60))
diff --git a/tests/baselines/reference/thisTypeInFunctionsNegative.types b/tests/baselines/reference/thisTypeInFunctionsNegative.types
index 6a3d134f34772..d828be4b3e849 100644
--- a/tests/baselines/reference/thisTypeInFunctionsNegative.types
+++ b/tests/baselines/reference/thisTypeInFunctionsNegative.types
@@ -709,12 +709,11 @@ function notFirst(a: number, this: C): number { return this.n; }
 
 ///// parse errors /////
 function modifiers(async this: C): number { return this.n; }
->modifiers : (: any, this: C) => number
-> : any
+>modifiers : (this: C) => number
 >this : C
->this.n : any
->this : any
->n : any
+>this.n : number
+>this : C
+>n : number
 
 function restParam(...this: C): number { return this.n; }
 >restParam : (...: any[], this: C) => number
diff --git a/tests/baselines/reference/transformApi/transformsCorrectly.transformSyntheticCommentOnStaticFieldInClassExpression.js b/tests/baselines/reference/transformApi/transformsCorrectly.transformSyntheticCommentOnStaticFieldInClassExpression.js
index e6ca9fc6ac387..47c851a2a8ecb 100644
--- a/tests/baselines/reference/transformApi/transformsCorrectly.transformSyntheticCommentOnStaticFieldInClassExpression.js
+++ b/tests/baselines/reference/transformApi/transformsCorrectly.transformSyntheticCommentOnStaticFieldInClassExpression.js
@@ -1,6 +1,11 @@
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
 var _a;
 const MyClass = (_a = class {
     },
+    __setFunctionName(_a, "MyClass"),
     /*comment*/
     _a.newField = "x",
     _a);
diff --git a/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-across-projects-resolve-correctly.js b/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-across-projects-resolve-correctly.js
index 736c36e2ae00d..781a2731d46bb 100644
--- a/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-across-projects-resolve-correctly.js
+++ b/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-across-projects-resolve-correctly.js
@@ -197,9 +197,10 @@ export declare class LassieDog extends Dog {
 //// [/src/src-dogs/lassie/lassiedog.js]
 import { Dog } from '../dog.js';
 import { LASSIE_CONFIG } from './lassieconfig.js';
-export class LassieDog extends Dog {
+class LassieDog extends Dog {
     static getDogConfig = () => LASSIE_CONFIG;
 }
+export { LassieDog };
 
 
 //// [/src/src-dogs/tsconfig.tsbuildinfo]
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js b/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
index 80f252a5df1a3..cbee6ce837d1d 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
@@ -110,7 +110,7 @@ default: undefined
 
 --lib
 Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, webworker, webworker.importscripts, webworker.iterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise/esnext.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array/esnext.array, esnext.intl
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, webworker, webworker.importscripts, webworker.iterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise/esnext.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array/esnext.array, esnext.intl, decorators, decorators.legacy
 default: undefined
 
 --allowJs
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
index e463e5a5d12e8..37c7be1aeed5e 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
@@ -110,7 +110,7 @@ default: undefined
 
 --lib
 Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, webworker, webworker.importscripts, webworker.iterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise/esnext.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array/esnext.array, esnext.intl
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, webworker, webworker.importscripts, webworker.iterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise/esnext.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array/esnext.array, esnext.intl, decorators, decorators.legacy
 default: undefined
 
 --allowJs
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
index e463e5a5d12e8..37c7be1aeed5e 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
@@ -110,7 +110,7 @@ default: undefined
 
 --lib
 Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, webworker, webworker.importscripts, webworker.iterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise/esnext.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array/esnext.array, esnext.intl
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, webworker, webworker.importscripts, webworker.iterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise/esnext.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array/esnext.array, esnext.intl, decorators, decorators.legacy
 default: undefined
 
 --allowJs
diff --git a/tests/baselines/reference/tscWatch/programUpdates/updates-diagnostics-and-emit-for-decorators.js b/tests/baselines/reference/tscWatch/programUpdates/updates-diagnostics-and-emit-for-decorators.js
index fb86001568eaa..6de22d4a5fcc4 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/updates-diagnostics-and-emit-for-decorators.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/updates-diagnostics-and-emit-for-decorators.js
@@ -31,17 +31,20 @@ Output::
 >> Screen clear
 [12:00:15 AM] Starting compilation in watch mode...
 
+error TS2318: Cannot find global type 'ClassDecoratorContext'.
+
 a.ts:1:1 - error TS1371: This import is never used as a value and must use 'import type' because 'importsNotUsedAsValues' is set to 'error'.
 
 1 import {B} from './b'
   ~~~~~~~~~~~~~~~~~~~~~
 
-a.ts:3:14 - error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.
+a.ts:2:2 - error TS1238: Unable to resolve signature of class decorator when called as an expression.
+  The runtime will invoke the decorator with 2 arguments, but the decorator expects 1.
 
-3 export class A {
-               ~
+2 @((_) => {})
+   ~~~~~~~~~~~
 
-[12:00:20 AM] Found 2 errors. Watching for file changes.
+[12:00:20 AM] Found 3 errors. Watching for file changes.
 
 
 
@@ -87,20 +90,61 @@ export class B {
 
 
 //// [/a.js]
-var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
-    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
-    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
-    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
-    return c > 3 && r && Object.defineProperty(target, key, r), r;
+var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+    var _, done = false;
+    for (var i = decorators.length - 1; i >= 0; i--) {
+        var context = {};
+        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+        if (kind === "accessor") {
+            if (result === void 0) continue;
+            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+            if (_ = accept(result.get)) descriptor.get = _;
+            if (_ = accept(result.set)) descriptor.set = _;
+            if (_ = accept(result.init)) initializers.push(_);
+        }
+        else if (_ = accept(result)) {
+            if (kind === "field") initializers.push(_);
+            else descriptor[key] = _;
+        }
+    }
+    if (target) Object.defineProperty(target, contextIn.name, descriptor);
+    done = true;
 };
-import './b';
-let A = class A {
-    constructor(p) { }
+var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
+    var useValue = arguments.length > 2;
+    for (var i = 0; i < initializers.length; i++) {
+        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+    }
+    return useValue ? value : void 0;
 };
-A = __decorate([
-    ((_) => { })
-], A);
-export { A };
+var __setFunctionName = (this && this.__setFunctionName) || function (f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
+import './b';
+export let A = (() => {
+    let _classDecorators = [((_) => { })];
+    let _classDescriptor;
+    let _classExtraInitializers = [];
+    let _classThis;
+    var A = _classThis = class {
+        constructor(p) { }
+    };
+    __setFunctionName(_classThis, "A");
+    (() => {
+        __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name }, null, _classExtraInitializers);
+        A = _classThis = _classDescriptor.value;
+        __runInitializers(_classThis, _classExtraInitializers);
+    })();
+    return A = _classThis;
+})();
 
 
 
@@ -120,7 +164,7 @@ Output::
 1 import {B} from './b'
   ~~~~~~~~~~~~~~~~~~~~~
 
-[12:00:24 AM] Found 1 error. Watching for file changes.
+[12:00:30 AM] Found 1 error. Watching for file changes.
 
 
 
@@ -157,6 +201,24 @@ FsWatchesRecursive::
 
 exitCode:: ExitStatus.undefined
 
+//// [/b.js] file written with same contents
+//// [/a.js]
+var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+};
+import './b';
+let A = class A {
+    constructor(p) { }
+};
+A = __decorate([
+    ((_) => { })
+], A);
+export { A };
+
+
 
 Change:: Enable emitDecoratorMetadata
 
@@ -167,9 +229,9 @@ Input::
 
 Output::
 >> Screen clear
-[12:00:27 AM] File change detected. Starting incremental compilation...
+[12:00:33 AM] File change detected. Starting incremental compilation...
 
-[12:00:34 AM] Found 0 errors. Watching for file changes.
+[12:00:40 AM] Found 0 errors. Watching for file changes.
 
 
 
diff --git a/tests/baselines/reference/tsserver/plugins/getSupportedCodeFixes-can-be-proxied.js b/tests/baselines/reference/tsserver/plugins/getSupportedCodeFixes-can-be-proxied.js
index 855976efc5b99..69f23c8730014 100644
--- a/tests/baselines/reference/tsserver/plugins/getSupportedCodeFixes-can-be-proxied.js
+++ b/tests/baselines/reference/tsserver/plugins/getSupportedCodeFixes-can-be-proxied.js
@@ -356,7 +356,6 @@ Info 32   [00:01:13.000] response:
         "2653",
         "17009",
         "2377",
-        "1219",
         "17004",
         "2845",
         "1378",
@@ -626,6 +625,8 @@ Info 32   [00:01:13.000] response:
         "1275",
         "1276",
         "1277",
+        "1278",
+        "1279",
         "1300",
         "1309",
         "1313",
@@ -1413,6 +1414,7 @@ Info 32   [00:01:13.000] response:
         "8035",
         "8036",
         "8037",
+        "8038",
         "9005",
         "9006",
         "17000",
@@ -1691,7 +1693,6 @@ Info 38   [00:01:19.000] response:
         "2653",
         "17009",
         "2377",
-        "1219",
         "17004",
         "2845",
         "1378",
@@ -1961,6 +1962,8 @@ Info 38   [00:01:19.000] response:
         "1275",
         "1276",
         "1277",
+        "1278",
+        "1279",
         "1300",
         "1309",
         "1313",
@@ -2748,6 +2751,7 @@ Info 38   [00:01:19.000] response:
         "8035",
         "8036",
         "8037",
+        "8038",
         "9005",
         "9006",
         "17000",
@@ -2938,7 +2942,6 @@ Info 40   [00:01:21.000] response:
         "2653",
         "17009",
         "2377",
-        "1219",
         "17004",
         "2845",
         "1378",
@@ -3208,6 +3211,8 @@ Info 40   [00:01:21.000] response:
         "1275",
         "1276",
         "1277",
+        "1278",
+        "1279",
         "1300",
         "1309",
         "1313",
@@ -3995,6 +4000,7 @@ Info 40   [00:01:21.000] response:
         "8035",
         "8036",
         "8037",
+        "8038",
         "9005",
         "9006",
         "17000",
diff --git a/tests/baselines/reference/typeOfThisInStaticMembers12(target=es2022).js b/tests/baselines/reference/typeOfThisInStaticMembers12(target=es2022).js
index 61a0be489d18b..e36f0855dbb59 100644
--- a/tests/baselines/reference/typeOfThisInStaticMembers12(target=es2022).js
+++ b/tests/baselines/reference/typeOfThisInStaticMembers12(target=es2022).js
@@ -14,10 +14,10 @@ class C {
     static { this.c = "foo"; }
     static { this.bar = (_c = () => { _a = this.c, _b = this.c; },
         class Inner {
-            constructor() {
-                this[_b] = 123;
-            }
-            static { _c(); }
-            static { this[_a] = 123; }
-        }); }
+                constructor() {
+                    this[_b] = 123;
+                }
+                static { _c(); }
+                static { this[_a] = 123; }
+            }); }
 }
diff --git a/tests/baselines/reference/typeOfThisInStaticMembers12(target=esnext).js b/tests/baselines/reference/typeOfThisInStaticMembers12(target=esnext).js
index 61a0be489d18b..e36f0855dbb59 100644
--- a/tests/baselines/reference/typeOfThisInStaticMembers12(target=esnext).js
+++ b/tests/baselines/reference/typeOfThisInStaticMembers12(target=esnext).js
@@ -14,10 +14,10 @@ class C {
     static { this.c = "foo"; }
     static { this.bar = (_c = () => { _a = this.c, _b = this.c; },
         class Inner {
-            constructor() {
-                this[_b] = 123;
-            }
-            static { _c(); }
-            static { this[_a] = 123; }
-        }); }
+                constructor() {
+                    this[_b] = 123;
+                }
+                static { _c(); }
+                static { this[_a] = 123; }
+            }); }
 }
diff --git a/tests/baselines/reference/variableDeclarationInStrictMode1.errors.txt b/tests/baselines/reference/variableDeclarationInStrictMode1.errors.txt
index 0d78ecb6fb28f..26b23cc3b1b1d 100644
--- a/tests/baselines/reference/variableDeclarationInStrictMode1.errors.txt
+++ b/tests/baselines/reference/variableDeclarationInStrictMode1.errors.txt
@@ -1,6 +1,6 @@
 tests/cases/compiler/variableDeclarationInStrictMode1.ts(2,5): error TS1100: Invalid use of 'eval' in strict mode.
 tests/cases/compiler/variableDeclarationInStrictMode1.ts(2,5): error TS2300: Duplicate identifier 'eval'.
-lib.es5.d.ts(32,18): error TS2300: Duplicate identifier 'eval'.
+lib.es5.d.ts(35,18): error TS2300: Duplicate identifier 'eval'.
 
 
 ==== tests/cases/compiler/variableDeclarationInStrictMode1.ts (2 errors) ====
@@ -10,4 +10,4 @@ lib.es5.d.ts(32,18): error TS2300: Duplicate identifier 'eval'.
 !!! error TS1100: Invalid use of 'eval' in strict mode.
         ~~~~
 !!! error TS2300: Duplicate identifier 'eval'.
-!!! related TS6203 /.ts/lib.es5.d.ts:32:18: 'eval' was also declared here.
\ No newline at end of file
+!!! related TS6203 /.ts/lib.es5.d.ts:35:18: 'eval' was also declared here.
\ No newline at end of file
diff --git a/tests/cases/conformance/classes/members/privateNames/privateNamesAndDecorators.ts b/tests/cases/conformance/classes/members/privateNames/privateNamesAndDecorators.ts
index d82e05ef9735e..174be446b472c 100644
--- a/tests/cases/conformance/classes/members/privateNames/privateNamesAndDecorators.ts
+++ b/tests/cases/conformance/classes/members/privateNames/privateNamesAndDecorators.ts
@@ -1,3 +1,4 @@
+// @experimentalDecorators: true
 declare function dec<T>(target: T): T;
 
 class A {
diff --git a/tests/cases/conformance/decorators/class/decoratorChecksFunctionBodies.ts b/tests/cases/conformance/decorators/class/decoratorChecksFunctionBodies.ts
index 36237f3cb58ed..0db73f7b1e216 100644
--- a/tests/cases/conformance/decorators/class/decoratorChecksFunctionBodies.ts
+++ b/tests/cases/conformance/decorators/class/decoratorChecksFunctionBodies.ts
@@ -6,10 +6,10 @@ function func(s: string): void {
 }
 
 class A {
-    @((x, p) => {
+    @((x, p, d) => {
         var a = 3;
         func(a);
-        return x; 
+        return d;
     })
     m() {
 
diff --git a/tests/cases/conformance/decorators/legacyDecorators-contextualTypes.ts b/tests/cases/conformance/decorators/legacyDecorators-contextualTypes.ts
new file mode 100644
index 0000000000000..b669e306e1efc
--- /dev/null
+++ b/tests/cases/conformance/decorators/legacyDecorators-contextualTypes.ts
@@ -0,0 +1,36 @@
+// @target: esnext
+// @experimentalDecorators: true
+
+@((t) => { })
+class C {
+    constructor(@((t, k, i) => {}) p: any) {}
+
+    @((t, k, d) => { })
+    static f() {}
+
+    @((t, k, d) => { })
+    static get x() { return 1; }
+    static set x(value) { }
+
+    @((t, k, d) => { })
+    static accessor y = 1;
+
+    @((t, k) => { })
+    static z = 1;
+
+    @((t, k, d) => { })
+    g() {}
+
+    @((t, k, d) => { })
+    get a() { return 1; }
+    set a(value) { }
+
+    @((t, k, d) => { })
+    accessor b = 1;
+
+    @((t, k) => { })
+    c = 1;
+
+    static h(@((t, k, i) => {}) p: any) {}
+    h(@((t, k, i) => {}) p: any) {}
+}
\ No newline at end of file
diff --git a/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts b/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts
index b578f8f2399b4..9dec1b36dc29c 100644
--- a/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts
+++ b/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck39.ts
@@ -1,4 +1,6 @@
-//@target: ES6
+// @target: ES6
+// @experimentalDecorators: true
+
 function decorator(x: any) {
     return y => { };
 }
diff --git a/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck59.ts b/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck59.ts
index 81aacecd7a30f..0e50d826ad0e8 100644
--- a/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck59.ts
+++ b/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck59.ts
@@ -1,4 +1,5 @@
-//@target: ES6
+// @target: ES6
+// @experimentalDecorators: true
 function* g() {
     class C {
         @(yield "")
diff --git a/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck61.ts b/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck61.ts
index 31c36e2a626d3..0fd01bb078927 100644
--- a/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck61.ts
+++ b/tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck61.ts
@@ -1,4 +1,5 @@
-//@target: ES6
+// @target: ES6
+// @experimentalDecorators: true
 function * g() {
     @(yield 0)
     class C {};
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStatic.ts b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStatic.ts
new file mode 100644
index 0000000000000..3488a160942a6
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStatic.ts
@@ -0,0 +1,16 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) get method1() { return 0; }
+    @dec(12) set method1(value) {}
+    @dec(21) get ["method2"]() { return 0; }
+    @dec(22) set ["method2"](value) {}
+    @dec(31) get [method3]() { return 0; }
+    @dec(32) set [method3](value) {}
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts
new file mode 100644
index 0000000000000..54b90038314cd
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticAbstract.ts
@@ -0,0 +1,16 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(11) abstract get method1(): number;
+    @dec(12) abstract set method1(value);
+    @dec(21) abstract get ["method2"](): number;
+    @dec(22) abstract set ["method2"](value);
+    @dec(31) abstract get [method3](): number;
+    @dec(32) abstract set [method3](value);
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticPrivate.ts b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticPrivate.ts
new file mode 100644
index 0000000000000..3cf554161d3a6
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-nonStaticPrivate.ts
@@ -0,0 +1,10 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec(1) get #method1() { return 0; }
+    @dec(2) set #method1(value) {}
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-static.ts b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-static.ts
new file mode 100644
index 0000000000000..e8bbbd7ed6826
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-static.ts
@@ -0,0 +1,16 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(11) static get method1() { return 0; }
+    @dec(12) static set method1(value) {}
+    @dec(21) static get ["method2"]() { return 0; }
+    @dec(22) static set ["method2"](value) {}
+    @dec(31) static get [method3]() { return 0; }
+    @dec(32) static set [method3](value) {}
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-staticPrivate.ts b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-staticPrivate.ts
new file mode 100644
index 0000000000000..821521bd2b3be
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/accessors/esDecorators-classDeclaration-accessors-staticPrivate.ts
@@ -0,0 +1,20 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec(1) static get #method1() { return 0; }
+    @dec(2) static set #method1(value) {}
+}
+
+@dec
+class D {
+    static get #method1() { return 0; }
+    static set #method1(value) {}
+    static {
+        this.#method1;
+        this.#method1 = 1;
+    }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.1.ts b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.1.ts
new file mode 100644
index 0000000000000..25682194a8669
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.1.ts
@@ -0,0 +1,24 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): void;
+}
+
+const method = "method";
+
+@dec
+class C extends Base {
+    static {
+        super.method();
+        super["method"]();
+        super[method]();
+
+        super.method``;
+        super["method"]``;
+        super[method]``;
+    }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.2.ts b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.2.ts
new file mode 100644
index 0000000000000..2e4c0b99d5ecf
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.2.ts
@@ -0,0 +1,29 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+// class expression in extends should not get an assigned name
+@dec
+class C1 extends class { } {
+    static {
+        super.name;
+    }
+}
+
+// function expression in extends should not get an assigned name
+@dec
+class C2 extends (function() {} as any) {
+    static {
+        super.name;
+    }
+}
+
+// arrow function in extends should not get an assigned name
+@dec
+class C3 extends ((() => {}) as any) {
+    static {
+        super.name;
+    }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.3.ts b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.3.ts
new file mode 100644
index 0000000000000..06783f6c01fb8
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.3.ts
@@ -0,0 +1,46 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+@dec
+class C extends Base {
+    static {
+        super.x;
+        super.x = 1;
+        super.x += 1;
+        super.x++;
+        super.x--;
+        ++super.x;
+        --super.x;
+        ({ x: super.x } = { x: 1 });
+        [super.x] = [1];
+
+        super["x"];
+        super["x"] = 1;
+        super["x"] += 1;
+        super["x"]++;
+        super["x"]--;
+        ++super["x"];
+        --super["x"];
+        ({ x: super["x"] } = { x: 1 });
+        [super["x"]] = [1];
+
+        super[x];
+        super[x] = 1;
+        super[x] += 1;
+        super[x]++;
+        super[x]--;
+        ++super[x];
+        --super[x];
+        ({ x: super[x] } = { x: 1 });
+        [super[x]] = [1];
+    }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.4.ts b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.4.ts
new file mode 100644
index 0000000000000..15e91abd5d405
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.4.ts
@@ -0,0 +1,21 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+}
+
+const method = "method";
+
+@dec
+class C extends Base {
+    static a = super.method();
+    static b = super["method"]();
+    static c = super[method]();
+    static d = super.method``;
+    static e = super["method"]``;
+    static f = super[method]``;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.5.ts b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.5.ts
new file mode 100644
index 0000000000000..c40b77ebc7320
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.5.ts
@@ -0,0 +1,50 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+@dec
+class C1 extends Base {
+    static a = super.x;
+    static b = super.x = 1;
+    static c = super.x += 1;
+    static d = super.x++;
+    static e = super.x--;
+    static f = ++super.x;
+    static g = --super.x;
+    static h = ({ x: super.x } = { x: 1 });
+    static i = [super.x] = [1];
+}
+
+@dec
+class C2 extends Base {
+    static a = super["x"];
+    static b = super["x"] = 1;
+    static c = super["x"] += 1;
+    static d = super["x"]++;
+    static e = super["x"]--;
+    static f = ++super["x"];
+    static g = --super["x"];
+    static h = ({ x: super["x"] } = { x: 1 });
+    static i = [super["x"]] = [1];
+}
+
+@dec
+class C3 extends Base {
+    static a = super[x];
+    static b = super[x] = 1;
+    static c = super[x] += 1;
+    static d = super[x]++;
+    static e = super[x]--;
+    static f = ++super[x];
+    static g = --super[x];
+    static h = ({ x: super[x] } = { x: 1 });
+    static i = [super[x]] = [1];
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.6.ts b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.6.ts
new file mode 100644
index 0000000000000..7b5718d0c7e15
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classSuper/esDecorators-classDeclaration-classSuper.6.ts
@@ -0,0 +1,28 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+    method(...args: any[]): number;
+}
+
+// none of the following should result in caching `super`
+@dec
+class C extends Base {
+    static m() { super.method(); }
+    static get x() { return super.method(); }
+    static set x(v: number) { super.method(); }
+
+    constructor() {
+        super();
+        super.method();
+    }
+
+    a = super.method();
+    m() { super.method(); }
+    get x() { return super.method(); }
+    set x(v: number) { super.method(); }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classThisReference/esDecorators-classDeclaration-classThisReference.es5.ts b/tests/cases/conformance/esDecorators/classDeclaration/classThisReference/esDecorators-classDeclaration-classThisReference.es5.ts
new file mode 100644
index 0000000000000..95a6d1ec3db14
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classThisReference/esDecorators-classDeclaration-classThisReference.es5.ts
@@ -0,0 +1,13 @@
+// @target: es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+@dec
+class C {
+    static { this; }
+    static x: any = this;
+    static m() { this; }
+    static get g() { return this; }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/classThisReference/esDecorators-classDeclaration-classThisReference.ts b/tests/cases/conformance/esDecorators/classDeclaration/classThisReference/esDecorators-classDeclaration-classThisReference.ts
new file mode 100644
index 0000000000000..905f0c64a2db7
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/classThisReference/esDecorators-classDeclaration-classThisReference.ts
@@ -0,0 +1,14 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+@dec
+class C {
+    static { this; }
+    static x: any = this;
+    static accessor a: any = this;
+    static m() { this; }
+    static get g() { return this; }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts
new file mode 100644
index 0000000000000..07785e960e5f5
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-commentPreservation.ts
@@ -0,0 +1,125 @@
+// @target: esnext, es2022, es2015
+// @module: esnext, commonjs
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+// @filename: file1.ts
+
+declare var dec: any;
+
+/*1*/
+@dec
+/*2*/
+@dec
+/*3*/
+class C {
+    /*4*/
+    @dec
+    /*5*/
+    @dec
+    /*6*/
+    method() {}
+
+    /*7*/
+    @dec
+    /*8*/
+    @dec
+    /*9*/
+    get x() { return 1; }
+
+    /*10*/
+    @dec
+    /*11*/
+    @dec
+    /*12*/
+    set x(value: number) { }
+
+    /*13*/
+    @dec
+    /*14*/
+    @dec
+    /*15*/
+    y = 1;
+
+    /*16*/
+    @dec
+    /*17*/
+    @dec
+    /*18*/
+    accessor z = 1;
+
+    /*19*/
+    @dec
+    /*20*/
+    @dec
+    /*21*/
+    static #method() {}
+
+    /*22*/
+    @dec
+    /*23*/
+    @dec
+    /*24*/
+    static get #x() { return 1; }
+
+    /*25*/
+    @dec
+    /*26*/
+    @dec
+    /*27*/
+    static set #x(value: number) { }
+
+    /*28*/
+    @dec
+    /*29*/
+    @dec
+    /*30*/
+    static #y = 1;
+
+    /*31*/
+    @dec
+    /*32*/
+    @dec
+    /*33*/
+    static accessor #z = 1;
+}
+
+// @filename: file2.ts
+
+/*34*/
+@dec
+/*35*/
+@dec
+/*36*/
+export class D {
+}
+
+/*37*/
+@dec
+/*38*/
+@dec
+/*39*/
+export default class E {
+}
+
+// @filename: file3.ts
+
+/*40*/
+export
+/*41*/
+@dec
+/*42*/
+@dec
+/*43*/
+class F {
+}
+
+/*44*/
+export default
+/*45*/
+@dec
+/*46*/
+@dec
+/*47*/
+class G {
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-exportModifier.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-exportModifier.ts
new file mode 100644
index 0000000000000..7f545eab89ec3
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-exportModifier.ts
@@ -0,0 +1,33 @@
+// @target: esnext
+// @module: esnext
+// @allowJs: true
+// @noEmit: true
+// @filename: global.js
+
+/** @type {*} */
+var dec;
+
+// @filename: file1.js
+
+// error
+@dec export class C1 { }
+
+// @filename: file2.js
+
+// error
+@dec export default class C2 {}
+
+// @filename: file3.js
+
+// error
+export @dec default class C3 {}
+
+// @filename: file4.js
+
+// ok
+export @dec class C4 {}
+
+// @filename: file5.js
+
+// ok
+export default @dec class C5 {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.ts
new file mode 100644
index 0000000000000..63686e666ea78
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.1.ts
@@ -0,0 +1,15 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers
+@dec class C {}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.ts
new file mode 100644
index 0000000000000..63287e6dd791d
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.2.ts
@@ -0,0 +1,15 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+export default @dec class {}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.ts
new file mode 100644
index 0000000000000..83c367398e598
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-classDecorator.3.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+@dec class C {
+    static #foo() {}
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.ts
new file mode 100644
index 0000000000000..edc47ae8d7631
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateAutoAccessor.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec accessor #x: any;
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.ts
new file mode 100644
index 0000000000000..972f4718020b6
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateField.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers
+class C {
+    @dec #x: any;
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.ts
new file mode 100644
index 0000000000000..895c5a4f660d8
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateGetter.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec get #foo() { return 1; }
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.ts
new file mode 100644
index 0000000000000..b577e8ab54e3e
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateMethod.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec #foo() {}
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.ts
new file mode 100644
index 0000000000000..55a75695ce08d
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-nonStaticPrivateSetter.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec set #foo(value: number) { }
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.ts
new file mode 100644
index 0000000000000..be04ebabb440a
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedAutoAccessor.ts
@@ -0,0 +1,18 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static accessor [x]: any;
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.ts
new file mode 100644
index 0000000000000..76043d03f4a35
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedField.ts
@@ -0,0 +1,18 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static [x]: any;
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.ts
new file mode 100644
index 0000000000000..33b3e0049e123
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedGetter.ts
@@ -0,0 +1,18 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static get [x]() { return 1; }
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.ts
new file mode 100644
index 0000000000000..3ddb03a280818
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedMethod.ts
@@ -0,0 +1,18 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static [x]() {}
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.ts
new file mode 100644
index 0000000000000..ace3d97bb0cdd
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticComputedSetter.ts
@@ -0,0 +1,18 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+declare var x: any;
+
+// needs: __esDecorate, __runInitializers, __propKey
+class C {
+    @dec static set [x](value: number) { }
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.ts
new file mode 100644
index 0000000000000..9f120b5d9c266
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateAutoAccessor.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static accessor #x: any;
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.ts
new file mode 100644
index 0000000000000..6b8976acde175
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateField.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers
+class C {
+    @dec static #x: any;
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.ts
new file mode 100644
index 0000000000000..f90692e9f8e2c
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateGetter.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static get #foo() { return 1; }
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.ts
new file mode 100644
index 0000000000000..a2b07839c80c5
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateMethod.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static #foo() {}
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.ts
new file mode 100644
index 0000000000000..817e1c59fd076
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-missingEmitHelpers-staticPrivateSetter.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {}
+
+declare var dec: any;
+
+// needs: __esDecorate, __runInitializers, __setFunctionName
+class C {
+    @dec static set #foo(value: number) { }
+}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-multipleDecorators.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-multipleDecorators.ts
new file mode 100644
index 0000000000000..f18c8353c3acc
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-multipleDecorators.ts
@@ -0,0 +1,10 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec1: any, dec2: any;
+
+@dec1
+@dec2
+class C {
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts
new file mode 100644
index 0000000000000..458ab7be19aac
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-outerThisReference.ts
@@ -0,0 +1,38 @@
+// @target: esnext, es2022, es2021, es2015
+// @noEmitHelpers: true
+
+declare let dec: any;
+
+declare let f: any;
+
+// `this` should point to the outer `this` in both cases.
+@dec(this)
+class A {
+    @dec(this)
+    b = 2;
+}
+
+// `this` should point to the outer `this`, and maintain the correct evaluation order with respect to computed
+// property names.
+
+@dec(this)
+class B {
+    // @ts-ignore
+    [f(this)] = 1;
+
+    @dec(this)
+    b = 2;
+
+    // @ts-ignore
+    [f(this)] = 3;
+}
+
+// The `this` transformation should ensure that decorators inside the class body have privileged access to
+// private names.
+@dec(this)
+class C {
+    #a = 1;
+
+    @dec(this, (x: C) => x.#a)
+    b = 2;
+}
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts
new file mode 100644
index 0000000000000..431ebe35558a6
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterDecorators.ts
@@ -0,0 +1,21 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+}
+
+(class C {
+    constructor(@dec x: any) {}
+    method(@dec x: any) {}
+    set x(@dec x: any) {}
+    static method(@dec x: any) {}
+    static set x(@dec x: any) {}
+});
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterProperties.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterProperties.ts
new file mode 100644
index 0000000000000..ba563c267c016
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-parameterProperties.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015, es5
+// @useDefineForClassFields: *
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var bound: any;
+
+class C {
+    constructor(private message: string) {}
+
+    @bound speak() {
+    }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName.ts
new file mode 100644
index 0000000000000..b479b27785e45
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-setFunctionName.ts
@@ -0,0 +1,25 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+// @filename: a.ts
+declare let dec: any;
+
+@dec class C {}
+
+export {}
+
+// @filename: b.ts
+declare let dec: any;
+
+@dec export class C {}
+
+// @filename: c.ts
+declare let dec: any;
+
+@dec export default class C {}
+
+// @filename: c.ts
+declare let dec: any;
+
+@dec export default class {}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-simpleTransformation.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-simpleTransformation.ts
new file mode 100644
index 0000000000000..bc617053bc4c8
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-simpleTransformation.ts
@@ -0,0 +1,9 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+@dec
+class C {
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts
new file mode 100644
index 0000000000000..f9ddcd0a28941
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/esDecorators-classDeclaration-sourceMap.ts
@@ -0,0 +1,51 @@
+// @target: esnext, es2022, es2015
+// @module: esnext
+// @sourceMap: true
+// @declaration: true
+// @declarationMap: true
+
+declare var dec: any;
+
+@dec
+@dec
+class C {
+    @dec
+    @dec
+    method() {}
+
+    @dec
+    @dec
+    get x() { return 1; }
+
+    @dec
+    @dec
+    set x(value: number) { }
+
+    @dec
+    @dec
+    y = 1;
+
+    @dec
+    @dec
+    accessor z = 1;
+
+    @dec
+    @dec
+    static #method() {}
+
+    @dec
+    @dec
+    static get #x() { return 1; }
+
+    @dec
+    @dec
+    static set #x(value: number) { }
+
+    @dec
+    @dec
+    static #y = 1;
+
+    @dec
+    @dec
+    static accessor #z = 1;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStatic.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStatic.ts
new file mode 100644
index 0000000000000..931aaec011a65
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStatic.ts
@@ -0,0 +1,14 @@
+// @target: esnext, es2022, es2015, es5
+// @useDefineForClassFields: *
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) field1 = 1;
+    @dec(2) ["field2"] = 2;
+    @dec(3) [field3] = 3;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts
new file mode 100644
index 0000000000000..574a70749f9ab
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstract.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract field1: number;
+    @dec(2) abstract ["field2"]: number;
+    @dec(3) abstract [field3]: number;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts
new file mode 100644
index 0000000000000..4a66ca3e6cb57
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+abstract class C {
+    @dec(1) abstract accessor field1: number;
+    @dec(2) abstract accessor ["field2"]: number;
+    @dec(3) abstract accessor [field3]: number;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAccessor.ts
new file mode 100644
index 0000000000000..9dd76382ba0ed
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAccessor.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) accessor field1 = 1;
+    @dec(2) accessor ["field2"] = 2;
+    @dec(3) accessor [field3] = 3;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts
new file mode 100644
index 0000000000000..b05b106d55e71
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticAmbient.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) declare field1: number;
+    @dec(2) declare ["field2"]: number;
+    @dec(3) declare [field3]: number;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticPrivate.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticPrivate.ts
new file mode 100644
index 0000000000000..33426ff4e3ae2
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticPrivate.ts
@@ -0,0 +1,9 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec #field1 = 0;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.ts
new file mode 100644
index 0000000000000..7bcff4dbc09d9
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-nonStaticPrivateAccessor.ts
@@ -0,0 +1,9 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec accessor #field1 = 0;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-static.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-static.ts
new file mode 100644
index 0000000000000..15c0abf6ac801
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-static.ts
@@ -0,0 +1,14 @@
+// @target: esnext, es2022, es2015, es5
+// @useDefineForClassFields: *
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static field1 = 1;
+    @dec(2) static ["field2"] = 2;
+    @dec(3) static [field3] = 3;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAccessor.ts
new file mode 100644
index 0000000000000..118ad1a5e827b
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAccessor.ts
@@ -0,0 +1,22 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static accessor field1 = 1;
+    @dec(2) static accessor ["field2"] = 2;
+    @dec(3) static accessor [field3] = 3;
+}
+
+@dec
+class D {
+    static accessor field1 = 1;
+    static {
+        this.field1;
+        this.field1 = 1;
+    }
+}
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts
new file mode 100644
index 0000000000000..ba6dafed12b24
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticAmbient.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const field3 = "field3";
+
+class C {
+    @dec(1) static declare field1 = 1;
+    @dec(2) static declare ["field2"] = 2;
+    @dec(3) static declare [field3] = 3;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticPrivate.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticPrivate.ts
new file mode 100644
index 0000000000000..c42095ebfca20
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticPrivate.ts
@@ -0,0 +1,18 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec static #field1 = 0;
+}
+
+@dec
+class D {
+    static #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticPrivateAccessor.ts b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticPrivateAccessor.ts
new file mode 100644
index 0000000000000..215b0cca67c29
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/fields/esDecorators-classDeclaration-fields-staticPrivateAccessor.ts
@@ -0,0 +1,18 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec static accessor #field1 = 0;
+}
+
+@dec
+class D {
+    static accessor #field1 = 0;
+    static {
+        this.#field1;
+        this.#field1 = 1;
+    }
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStatic.ts b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStatic.ts
new file mode 100644
index 0000000000000..76a14f3a955d8
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStatic.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) method1() {}
+    @dec(2) ["method2"]() {}
+    @dec(3) [method3]() {}
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts
new file mode 100644
index 0000000000000..505dbddf11499
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticAbstract.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const method3 = "method3";
+
+abstract class C {
+    @dec(1) abstract method1(): void;
+    @dec(2) abstract ["method2"](): void;
+    @dec(3) abstract [method3](): void;
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticPrivate.ts b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticPrivate.ts
new file mode 100644
index 0000000000000..152dbdf827de4
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-nonStaticPrivate.ts
@@ -0,0 +1,9 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec #method1() {}
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-static.ts b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-static.ts
new file mode 100644
index 0000000000000..6368795854661
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-static.ts
@@ -0,0 +1,13 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+const method3 = "method3";
+
+class C {
+    @dec(1) static method1() {}
+    @dec(2) static ["method2"]() {}
+    @dec(3) static [method3]() {}
+}
diff --git a/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-staticPrivate.ts b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-staticPrivate.ts
new file mode 100644
index 0000000000000..89954a68bcc87
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classDeclaration/methods/esDecorators-classDeclaration-methods-staticPrivate.ts
@@ -0,0 +1,14 @@
+// @target: esnext, es2022, es2015
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+class C {
+    @dec static #method1() {}
+}
+
+@dec
+class D {
+    static #method1() {}
+}
diff --git a/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.1.ts b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.1.ts
new file mode 100644
index 0000000000000..169a4cb4c8a40
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.1.ts
@@ -0,0 +1,24 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): void;
+}
+
+const method = "method";
+
+(@dec
+class C extends Base {
+    static {
+        super.method();
+        super["method"]();
+        super[method]();
+
+        super.method``;
+        super["method"]``;
+        super[method]``;
+    }
+});
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.2.ts b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.2.ts
new file mode 100644
index 0000000000000..727ec2644617e
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.2.ts
@@ -0,0 +1,29 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+// class expression in extends should not get an assigned name
+(@dec
+class C1 extends class { } {
+    static {
+        super.name;
+    }
+});
+
+// function expression in extends should not get an assigned name
+(@dec
+class C2 extends (function() {} as any) {
+    static {
+        super.name;
+    }
+});
+
+// arrow function in extends should not get an assigned name
+(@dec
+class C3 extends ((() => {}) as any) {
+    static {
+        super.name;
+    }
+});
diff --git a/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.3.ts b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.3.ts
new file mode 100644
index 0000000000000..b896d3e1e58e8
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.3.ts
@@ -0,0 +1,46 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+(@dec
+class C extends Base {
+    static {
+        super.x;
+        super.x = 1;
+        super.x += 1;
+        super.x++;
+        super.x--;
+        ++super.x;
+        --super.x;
+        ({ x: super.x } = { x: 1 });
+        [super.x] = [1];
+
+        super["x"];
+        super["x"] = 1;
+        super["x"] += 1;
+        super["x"]++;
+        super["x"]--;
+        ++super["x"];
+        --super["x"];
+        ({ x: super["x"] } = { x: 1 });
+        [super["x"]] = [1];
+
+        super[x];
+        super[x] = 1;
+        super[x] += 1;
+        super[x]++;
+        super[x]--;
+        ++super[x];
+        --super[x];
+        ({ x: super[x] } = { x: 1 });
+        [super[x]] = [1];
+    }
+});
diff --git a/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.4.ts b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.4.ts
new file mode 100644
index 0000000000000..53281d6ea2b62
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.4.ts
@@ -0,0 +1,21 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+}
+
+const method = "method";
+
+(@dec
+class C extends Base {
+    static a = super.method();
+    static b = super["method"]();
+    static c = super[method]();
+    static d = super.method``;
+    static e = super["method"]``;
+    static f = super[method]``;
+});
diff --git a/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.5.ts b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.5.ts
new file mode 100644
index 0000000000000..1de9ebacae1ed
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.5.ts
@@ -0,0 +1,50 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static x: number;
+}
+
+const x = "x";
+
+(@dec
+class C1 extends Base {
+    static a = super.x;
+    static b = super.x = 1;
+    static c = super.x += 1;
+    static d = super.x++;
+    static e = super.x--;
+    static f = ++super.x;
+    static g = --super.x;
+    static h = ({ x: super.x } = { x: 1 });
+    static i = [super.x] = [1];
+});
+
+(@dec
+class C2 extends Base {
+    static a = super["x"];
+    static b = super["x"] = 1;
+    static c = super["x"] += 1;
+    static d = super["x"]++;
+    static e = super["x"]--;
+    static f = ++super["x"];
+    static g = --super["x"];
+    static h = ({ x: super["x"] } = { x: 1 });
+    static i = [super["x"]] = [1];
+});
+
+(@dec
+class C3 extends Base {
+    static a = super[x];
+    static b = super[x] = 1;
+    static c = super[x] += 1;
+    static d = super[x]++;
+    static e = super[x]--;
+    static f = ++super[x];
+    static g = --super[x];
+    static h = ({ x: super[x] } = { x: 1 });
+    static i = [super[x]] = [1];
+});
diff --git a/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.6.ts b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.6.ts
new file mode 100644
index 0000000000000..4081caf772540
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/classSuper/esDecorators-classExpression-classSuper.6.ts
@@ -0,0 +1,28 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+declare class Base {
+    static method(...args: any[]): number;
+    method(...args: any[]): number;
+}
+
+// none of the following should result in caching `super`
+(@dec
+class C extends Base {
+    static m() { super.method(); }
+    static get x() { return super.method(); }
+    static set x(v: number) { super.method(); }
+
+    constructor() {
+        super();
+        super.method();
+    }
+
+    a = super.method();
+    m() { super.method(); }
+    get x() { return super.method(); }
+    set x(v: number) { super.method(); }
+});
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-commentPreservation.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-commentPreservation.ts
new file mode 100644
index 0000000000000..521cc507f852c
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-commentPreservation.ts
@@ -0,0 +1,86 @@
+// @target: esnext, es2022, es2015
+// @module: esnext
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare var dec: any;
+
+/*1*/
+(
+/*2*/
+@dec
+/*3*/
+@dec
+/*4*/
+class C {
+    /*5*/
+    @dec
+    /*6*/
+    @dec
+    /*7*/
+    method() {}
+
+    /*8*/
+    @dec
+    /*9*/
+    @dec
+    /*10*/
+    get x() { return 1; }
+
+    /*11*/
+    @dec
+    /*12*/
+    @dec
+    /*13*/
+    set x(value: number) { }
+
+    /*14*/
+    @dec
+    /*15*/
+    @dec
+    /*16*/
+    y = 1;
+
+    /*17*/
+    @dec
+    /*18*/
+    @dec
+    /*19*/
+    accessor z = 1;
+
+    /*20*/
+    @dec
+    /*21*/
+    @dec
+    /*22*/
+    static #method() {}
+
+    /*23*/
+    @dec
+    /*24*/
+    @dec
+    /*25*/
+    static get #x() { return 1; }
+
+    /*26*/
+    @dec
+    /*27*/
+    @dec
+    /*28*/
+    static set #x(value: number) { }
+
+    /*29*/
+    @dec
+    /*30*/
+    @dec
+    /*31*/
+    static #y = 1;
+
+    /*32*/
+    @dec
+    /*33*/
+    @dec
+    /*34*/
+    static accessor #z = 1;
+}
+);
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.ts
new file mode 100644
index 0000000000000..8503a44c9a844
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.1.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+
+declare var dec: any;
+
+// uses: __esDecorate, __runInitializers, __setFunctionName
+export const C = @dec class {};
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.ts
new file mode 100644
index 0000000000000..28244c4dda57b
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.10.ts
@@ -0,0 +1,16 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C &&= @dec class {};
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.ts
new file mode 100644
index 0000000000000..540552ad6666f
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.11.ts
@@ -0,0 +1,16 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C ??= @dec class {};
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.ts
new file mode 100644
index 0000000000000..f3bef01d8c223
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.12.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+function f(C = @dec class {}) {}
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.ts
new file mode 100644
index 0000000000000..8c21f5bb1ebd9
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.13.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+export const C = ((@dec class {}));
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.ts
new file mode 100644
index 0000000000000..32e9c21ee82bd
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.14.ts
@@ -0,0 +1,15 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+declare var x: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+({ [x]: @dec class {} });
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.ts
new file mode 100644
index 0000000000000..e0783f42eb5f5
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.15.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+class C { D = @dec class {} }
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.ts
new file mode 100644
index 0000000000000..42c7295f03d89
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.16.ts
@@ -0,0 +1,15 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+declare var x: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+class C { [x] = @dec class {} }
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.ts
new file mode 100644
index 0000000000000..de4d06ca09593
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.17.ts
@@ -0,0 +1,17 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+declare var x: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName, __propKey
+({ [x]: C = @dec class {} } = {});
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.ts
new file mode 100644
index 0000000000000..a5916578ac586
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.2.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+
+declare var dec: any;
+
+// uses: __esDecorate, __runInitializers
+export const C = @dec class C {};
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.ts
new file mode 100644
index 0000000000000..fbc70ef161c65
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.3.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+export default (@dec class {});
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.ts
new file mode 100644
index 0000000000000..230b275438645
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.4.ts
@@ -0,0 +1,16 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C = @dec class {};
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.ts
new file mode 100644
index 0000000000000..dfaf9482b7201
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.5.ts
@@ -0,0 +1,16 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+[C = @dec class {}] = [];
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.ts
new file mode 100644
index 0000000000000..7f5bb9060ef45
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.6.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C: @dec class {} });
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.ts
new file mode 100644
index 0000000000000..3c3bbe513a1a7
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.7.ts
@@ -0,0 +1,16 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C: C = @dec class {} } = {});
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.ts
new file mode 100644
index 0000000000000..cb81e5fc84553
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.8.ts
@@ -0,0 +1,16 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+({ C = @dec class {} } = {});
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.ts b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.ts
new file mode 100644
index 0000000000000..7e6581daeb66e
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/esDecorators-classExpression-missingEmitHelpers-classDecorator.9.ts
@@ -0,0 +1,16 @@
+// @target: es2022
+// @importHelpers: true
+// @module: commonjs
+// @moduleResolution: classic
+// @noTypesAndSymbols: true
+// @filename: main.ts
+export {};
+declare var dec: any;
+
+var C;
+
+// uses __esDecorate, __runInitializers, __setFunctionName
+C ||= @dec class {};
+
+// @filename: tslib.d.ts
+export {}
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.1.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.1.ts
new file mode 100644
index 0000000000000..e8114efe9f347
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.1.ts
@@ -0,0 +1,30 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+declare let dec: any;
+
+let x: any;
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `=` AssignmentExpression
+
+x = @dec class { };
+x = class { @dec y: any; };
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `&&=` AssignmentExpression
+
+x &&= @dec class { };
+x &&= class { @dec y: any; };
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `||=` AssignmentExpression
+
+x ||= @dec class { };
+x ||= class { @dec y: any; };
+
+// 13.15.2 RS: Evaluation
+//  AssignmentExpression : LeftHandSideExpression `??=` AssignmentExpression
+
+x ??= @dec class { };
+x ??= class { @dec y: any; };
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.10.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.10.ts
new file mode 100644
index 0000000000000..141cb86e3ffa5
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.10.ts
@@ -0,0 +1,35 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any, f: any;
+
+// 10.2.1.3 RS: EvaluateBody
+//   Initializer : `=` AssignmentExpression
+
+{ class C { static x = @dec class {}; } }
+{ class C { static "x" = @dec class {}; } }
+{ class C { static 0 = @dec class {}; } }
+{ class C { static ["x"] = @dec class {}; } }
+{ class C { static [0] = @dec class {}; } }
+// @ts-ignore
+{ class C { static [f()] = @dec class {}; } }
+
+// __proto__ is not special in a class field
+{ class C { static __proto__ = @dec class {}; } }
+{ class C { static "__proto__" = @dec class {}; } }
+
+{ class C { static x = class { @dec y: any }; } }
+{ class C { static "x" = class { @dec y: any }; } }
+{ class C { static 0 = class { @dec y: any }; } }
+{ class C { static ["x"] = class { @dec y: any }; } }
+{ class C { static [0] = class { @dec y: any }; } }
+// @ts-ignore
+{ class C { static [f()] = @dec class {}; } }
+
+// __proto__ is not special in a class field
+{ class C { static __proto__ = class { @dec y: any }; } }
+{ class C { static "__proto__" = class { @dec y: any }; } }
+
+// ensure nested named evaluation happens when field is also transformed
+{ class C { @dec static x = @dec class {}; } }
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.11.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.11.ts
new file mode 100644
index 0000000000000..71436b4440d37
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.11.ts
@@ -0,0 +1,15 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+// No NamedEvaluation, no class name
+
+(@dec class {});
+(class { @dec y: any });
+
+// No NamedEvaluation, class name
+
+(@dec class C {});
+(class C { @dec y: any });
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.2.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.2.ts
new file mode 100644
index 0000000000000..20b3e9d34aaf3
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.2.ts
@@ -0,0 +1,34 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+declare let dec: any;
+
+let x: any, f: any;
+
+// 13.2.5.5 RS: PropertyDefinitionEvaluation
+//  PropertyAssignment : PropertyName `:` AssignmentExpression
+
+({ x: @dec class { } });
+({ x: class { @dec y: any; } });
+
+({ "x": @dec class { } });
+({ "x": class { @dec y: any; } });
+
+({ 0: @dec class { } });
+({ 0: class { @dec y: any; } });
+
+({ ["x"]: @dec class { } });
+({ ["x"]: class { @dec y: any; } });
+
+({ [0]: @dec class { } });
+({ [0]: class { @dec y: any; } });
+
+({ [f()]: @dec class { } });
+({ [f()]: class { @dec y: any; } });
+
+// __proto__ setters do not perform NamedEvaluation
+({ __proto__: @dec class { } });
+({ "__proto__": @dec class { } });
+
+// "__proto__" in a computed property name *does* perform NamedEvaluation
+({ ["__proto__"]: @dec class { } });
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.3.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.3.ts
new file mode 100644
index 0000000000000..4b275c2ddec9d
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.3.ts
@@ -0,0 +1,19 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+declare let dec: any;
+
+// 14.3.1.2 RS: Evaluation
+//   LexicalBinding : BindingIdentifier Initializer
+
+{ let x = @dec class { }; }
+{ let x = class { @dec y: any; }; }
+
+{ const x = @dec class { }; }
+{ const x = class { @dec y: any; }; }
+
+// 14.3.2.1 RS: Evaluation
+//   VariableDeclaration : BindingIdentifier Initializer
+
+{ var x2 = @dec class { }; }
+{ var x1 = class { @dec y: any; }; }
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.4.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.4.ts
new file mode 100644
index 0000000000000..58ef4cf58f0b5
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.4.ts
@@ -0,0 +1,20 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+declare let dec: any, obj: any;
+
+// 8.6.3 RS: IteratorBindingInitialization
+//  SingleNameBinding : BindingIdentifier Initializer?
+
+{ const [x = @dec class { }] = obj; }
+{ const [x = class { @dec y: any; }] = obj; }
+
+// 14.3.3.3 RS: KeyedBindingInitialization
+//  SingleNameBinding : BindingIdentifier Initializer?
+
+{ const { x = @dec class { } } = obj; }
+{ const { x = class { @dec y: any; } } = obj; }
+
+{ const { y: x = @dec class { } } = obj; }
+{ const { y: x = class { @dec y: any; } } = obj; }
+
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.5.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.5.ts
new file mode 100644
index 0000000000000..c365e8fbf04d4
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.5.ts
@@ -0,0 +1,10 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+declare let dec: any, obj: any, x: any;
+
+// 13.15.5.3 RS: PropertyDestructuringAssignmentEvaluation
+//   AssignmentProperty : IdentifierReference Initializer?
+
+({ x = @dec class { } } = obj);
+({ x = class { @dec y: any; } } = obj);
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.6.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.6.ts
new file mode 100644
index 0000000000000..2460b9fe6aa15
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.6.ts
@@ -0,0 +1,10 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+declare let dec: any, obj: any, x: any;
+
+// 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+//   AssignmentElement : DestructuringAssignmentTarget Initializer?
+
+({ y: x = @dec class { } } = obj);
+({ y: x = class { @dec y: any; } } = obj);
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.7.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.7.ts
new file mode 100644
index 0000000000000..1dc196ad7089f
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.7.ts
@@ -0,0 +1,10 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+declare let dec: any, obj: any, x: any;
+
+// 13.15.5.6 RS: KeyedDestructuringAssignmentEvaluation
+//   AssignmentElement : DestructuringAssignmentTarget Initializer?
+
+[x = @dec class { }] = obj;
+[x = class { @dec y: any; }] = obj;
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.8.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.8.ts
new file mode 100644
index 0000000000000..9beed27890565
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.8.ts
@@ -0,0 +1,19 @@
+// @target: es2022
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+// @filename: a.ts
+declare let dec: any;
+
+// 16.2.3.7 RS: Evaluation
+//   ExportDeclaration : `export` `default` AssignmentExpression `;` 
+
+export default (@dec class { });
+
+// @filename: b.ts
+declare let dec: any;
+
+// 16.2.3.7 RS: Evaluation
+//   ExportDeclaration : `export` `default` AssignmentExpression `;` 
+
+export default (class { @dec y: any });
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.9.ts b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.9.ts
new file mode 100644
index 0000000000000..e953ebdd79685
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/classExpression/namedEvaluation/esDecorators-classExpression-namedEvaluation.9.ts
@@ -0,0 +1,14 @@
+// @target: es2022
+// @module: commonjs
+// @noEmitHelpers: true
+// @noTypesAndSymbols: true
+
+// @filename: a.ts
+declare let dec: any;
+
+export = @dec class { };
+
+// @filename: b.ts
+declare let dec: any;
+
+export = class { @dec y: any };
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/esDecorators-arguments.ts b/tests/cases/conformance/esDecorators/esDecorators-arguments.ts
new file mode 100644
index 0000000000000..84fd37a420619
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/esDecorators-arguments.ts
@@ -0,0 +1,7 @@
+// @target: esnext
+@(() => {})
+@((a: any) => {})
+@((a: any, b: any) => {})
+@((a: any, b: any, c: any) => {})
+@((a: any, b: any, c: any, ...d: any[]) => {})
+class C1 {}
diff --git a/tests/cases/conformance/esDecorators/esDecorators-contextualTypes.2.ts b/tests/cases/conformance/esDecorators/esDecorators-contextualTypes.2.ts
new file mode 100644
index 0000000000000..ed7a9972123f0
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/esDecorators-contextualTypes.2.ts
@@ -0,0 +1,33 @@
+// @target: esnext
+// @module: esnext
+
+class C {
+    @boundMethodLogger("Yadda", /*bound*/ true)
+    foo() {
+        this.fooHelper();
+    }
+
+    fooHelper() {
+        console.log("Behold! The actual method implementation!")
+    }
+};
+export { C };
+
+function boundMethodLogger<This, Args extends any[], Return>(source: string, bound = true) {
+    return function loggedDecorator(
+        target: (this: This, ...args: Args) => Return,
+        context: ClassMethodDecoratorContext<This, (this: This, ...args: Args) => Return>
+    ): ((this: This, ...args: Args) => Return) {
+
+        if (bound) {
+            context.addInitializer(function () {
+                (this as any)[context.name] = (this as any)[context.name].bind(this);
+            });
+        }
+
+        return function (this, ...args) {
+            console.log(`<${source}>: I'm logging stuff from ${context.name.toString()}!`);
+            return target.apply(this, args);
+        }
+    }
+}
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/esDecorators-contextualTypes.ts b/tests/cases/conformance/esDecorators/esDecorators-contextualTypes.ts
new file mode 100644
index 0000000000000..1f629459d97fa
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/esDecorators-contextualTypes.ts
@@ -0,0 +1,64 @@
+// @target: esnext
+
+@((t, c) => { })
+class C {
+    @((t, c) => { })
+    static f() {}
+
+    @((t, c) => { })
+    static #f() {}
+
+    @((t, c) => { })
+    static get x() { return 1; }
+
+    @((t, c) => { })
+    static set x(value) { }
+
+    @((t, c) => { })
+    static get #x() { return 1; }
+
+    @((t, c) => { })
+    static set #x(value) { }
+
+    @((t, c) => { })
+    static accessor y = 1;
+
+    @((t, c) => { })
+    static accessor #y = 1;
+
+    @((t, c) => { })
+    static z = 1;
+
+    @((t, c) => { })
+    static #z = 1;
+
+    @((t, c) => { })
+    g() {}
+
+    @((t, c) => { })
+    #g() {}
+
+    @((t, c) => { })
+    get a() { return 1; }
+
+    @((t, c) => { })
+    set a(value) { }
+
+    @((t, c) => { })
+    get #a() { return 1; }
+
+    @((t, c) => { })
+    set #a(value) { }
+
+    @((t, c) => { })
+    accessor b = 1;
+
+    @((t, c) => { })
+    accessor #b = 1;
+
+    @((t, c) => { })
+    c = 1;
+
+    @((t, c) => { })
+    #c = 1;
+}
\ No newline at end of file
diff --git a/tests/cases/conformance/esDecorators/esDecorators-emitDecoratorMetadata.ts b/tests/cases/conformance/esDecorators/esDecorators-emitDecoratorMetadata.ts
new file mode 100644
index 0000000000000..90178600c27fe
--- /dev/null
+++ b/tests/cases/conformance/esDecorators/esDecorators-emitDecoratorMetadata.ts
@@ -0,0 +1,51 @@
+// @target: esnext, es2022, es2015, es5
+// @noEmitHelpers: true
+// @emitDecoratorMetadata: true
+// @noTypesAndSymbols: true
+
+declare let dec: any;
+
+@dec
+class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+}
+
+(@dec class C {
+    constructor(x: number) {}
+
+    @dec
+    method(x: number) {}
+
+    @dec
+    set x(x: number) {}
+
+    @dec
+    y: number;
+
+    @dec
+    static method(x: number) {}
+
+    @dec
+    static set x(x: number) {}
+
+    @dec
+    static y: number;
+});
\ No newline at end of file
diff --git a/tests/cases/fourslash/codefixEnableExperimentalDecorators_blankCompilerOptionsInJsconfig.ts b/tests/cases/fourslash/codefixEnableExperimentalDecorators_blankCompilerOptionsInJsconfig.ts
deleted file mode 100644
index 0f52d496b700a..0000000000000
--- a/tests/cases/fourslash/codefixEnableExperimentalDecorators_blankCompilerOptionsInJsconfig.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-/// <reference path='fourslash.ts' />
-
-// @Filename: /dir/a.ts
-////declare const decorator: any;
-////class A {
-//// @decorator method() {};
-////};
-
-// @Filename: /dir/jsconfig.json
-////{
-////    "compilerOptions": {
-////    }
-////}
-
-goTo.file("/dir/a.ts");
-verify.codeFix({
-    description: "Enable the 'experimentalDecorators' option in your configuration file",
-    newFileContent: {
-        "/dir/jsconfig.json":
-`{
-    "compilerOptions": {
-        "experimentalDecorators": true
-    }
-}`,
-    },
-});
diff --git a/tests/cases/fourslash/codefixEnableExperimentalDecorators_blankCompilerOptionsInTsconfig.ts b/tests/cases/fourslash/codefixEnableExperimentalDecorators_blankCompilerOptionsInTsconfig.ts
deleted file mode 100644
index 48bc32e58213c..0000000000000
--- a/tests/cases/fourslash/codefixEnableExperimentalDecorators_blankCompilerOptionsInTsconfig.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-/// <reference path='fourslash.ts' />
-
-// @Filename: /dir/a.ts
-////declare const decorator: any;
-////class A {
-//// @decorator method() {};
-////};
-
-// @Filename: /dir/tsconfig.json
-////{
-////    "compilerOptions": {
-////    }
-////}
-
-goTo.file("/dir/a.ts");
-verify.codeFix({
-    description: "Enable the 'experimentalDecorators' option in your configuration file",
-    newFileContent: {
-        "/dir/tsconfig.json":
-`{
-    "compilerOptions": {
-        "experimentalDecorators": true
-    }
-}`,
-    },
-});
diff --git a/tests/cases/fourslash/codefixEnableExperimentalDecorators_disabledInCompilerOptionsInJsconfig.ts b/tests/cases/fourslash/codefixEnableExperimentalDecorators_disabledInCompilerOptionsInJsconfig.ts
deleted file mode 100644
index 2b0809fe8c8b5..0000000000000
--- a/tests/cases/fourslash/codefixEnableExperimentalDecorators_disabledInCompilerOptionsInJsconfig.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-/// <reference path='fourslash.ts' />
-
-// @Filename: /dir/a.ts
-////declare const decorator: any;
-////class A {
-//// @decorator method() {};
-////};
-
-// @Filename: /dir/jsconfig.json
-////{
-////    "compilerOptions": {
-////        "experimentalDecorators": false,
-////    }
-////}
-
-goTo.file("/dir/a.ts");
-verify.codeFix({
-    description: "Enable the 'experimentalDecorators' option in your configuration file",
-    newFileContent: {
-        "/dir/jsconfig.json":
-`{
-    "compilerOptions": {
-        "experimentalDecorators": true,
-    }
-}`,
-    },
-});
diff --git a/tests/cases/fourslash/codefixEnableExperimentalDecorators_disabledInCompilerOptionsInTsconfig.ts b/tests/cases/fourslash/codefixEnableExperimentalDecorators_disabledInCompilerOptionsInTsconfig.ts
deleted file mode 100644
index 056e7e15a4885..0000000000000
--- a/tests/cases/fourslash/codefixEnableExperimentalDecorators_disabledInCompilerOptionsInTsconfig.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-/// <reference path='fourslash.ts' />
-
-// @Filename: /dir/a.ts
-////declare const decorator: any;
-////class A {
-//// @decorator method() {};
-////};
-
-// @Filename: /dir/tsconfig.json
-////{
-////    "compilerOptions": {
-////        "experimentalDecorators": false,
-////    }
-////}
-
-goTo.file("/dir/a.ts");
-verify.codeFix({
-    description: "Enable the 'experimentalDecorators' option in your configuration file",
-    newFileContent: {
-        "/dir/tsconfig.json":
-`{
-    "compilerOptions": {
-        "experimentalDecorators": true,
-    }
-}`,
-    },
-});
diff --git a/tests/cases/fourslash/codefixEnableExperimentalDecorators_missingCompilerOptionsInJsconfig.ts b/tests/cases/fourslash/codefixEnableExperimentalDecorators_missingCompilerOptionsInJsconfig.ts
deleted file mode 100644
index d3370433b6a6a..0000000000000
--- a/tests/cases/fourslash/codefixEnableExperimentalDecorators_missingCompilerOptionsInJsconfig.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-/// <reference path='fourslash.ts' />
-
-// @Filename: /dir/a.ts
-////declare const decorator: any;
-////class A {
-//// @decorator method() {};
-////};
-
-// @Filename: /dir/jsconfig.json
-////{
-////}
-
-goTo.file("/dir/a.ts");
-verify.codeFix({
-    description: "Enable the 'experimentalDecorators' option in your configuration file",
-    newFileContent: {
-        "/dir/jsconfig.json":
-`{
-    "compilerOptions": {
-        "experimentalDecorators": true
-    }
-}`,
-    },
-});
diff --git a/tests/cases/fourslash/codefixEnableExperimentalDecorators_missingCompilerOptionsInTsconfig.ts b/tests/cases/fourslash/codefixEnableExperimentalDecorators_missingCompilerOptionsInTsconfig.ts
deleted file mode 100644
index de51cafee224e..0000000000000
--- a/tests/cases/fourslash/codefixEnableExperimentalDecorators_missingCompilerOptionsInTsconfig.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-/// <reference path='fourslash.ts' />
-
-// @Filename: /dir/a.ts
-////declare const decorator: any;
-////class A {
-//// @decorator method() {};
-////};
-
-// @Filename: /dir/tsconfig.json
-////{
-////}
-
-goTo.file("/dir/a.ts");
-verify.codeFix({
-    description: "Enable the 'experimentalDecorators' option in your configuration file",
-    newFileContent: {
-        "/dir/tsconfig.json":
-`{
-    "compilerOptions": {
-        "experimentalDecorators": true
-    }
-}`,
-    },
-});
diff --git a/tests/cases/fourslash/codefixEnableExperimentalDecorators_noTsconfig.ts b/tests/cases/fourslash/codefixEnableExperimentalDecorators_noTsconfig.ts
deleted file mode 100644
index 8430fd0734b72..0000000000000
--- a/tests/cases/fourslash/codefixEnableExperimentalDecorators_noTsconfig.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-/// <reference path='fourslash.ts' />
-
-// @Filename: /dir/a.ts
-////declare const decorator: any;
-////class A {
-//// @decorator method() {};
-////};
-
-goTo.file("/dir/a.ts");
-verify.not.codeFixAvailable();
diff --git a/tests/cases/fourslash/completionForStringLiteralNonrelativeImport14.ts b/tests/cases/fourslash/completionForStringLiteralNonrelativeImport14.ts
index 2f683082db2da..e3bc4eccdc1f2 100644
--- a/tests/cases/fourslash/completionForStringLiteralNonrelativeImport14.ts
+++ b/tests/cases/fourslash/completionForStringLiteralNonrelativeImport14.ts
@@ -27,7 +27,7 @@
 
 verify.completions({
     marker: ["import_as0",],
-    exact: ["lib", "tests",
+    exact: ["lib", "lib.decorators", "lib.decorators.legacy", "tests",
         {
             name: "/module1",
             replacementSpan: {
@@ -50,7 +50,7 @@ verify.completions({
 
 verify.completions({
     marker: ["import_equals0",],
-    exact: ["lib", "tests",
+    exact: ["lib", "lib.decorators", "lib.decorators.legacy", "tests",
         {
             name: "/module1",
             replacementSpan: {
@@ -72,7 +72,7 @@ verify.completions({
 
 verify.completions({
     marker: ["require0",],
-    exact: ["lib", "tests",
+    exact: ["lib", "lib.decorators", "lib.decorators.legacy", "tests",
         {
             name: "/module1",
             replacementSpan: {
diff --git a/tests/cases/fourslash/completionsPaths_importType.ts b/tests/cases/fourslash/completionsPaths_importType.ts
index 3541f2c39e761..b001ebffc3b22 100644
--- a/tests/cases/fourslash/completionsPaths_importType.ts
+++ b/tests/cases/fourslash/completionsPaths_importType.ts
@@ -26,6 +26,8 @@ verify.completions(
         marker: "2",
         exact: [
             { name: "lib", kind: "script", kindModifiers: ".d.ts" },
+            { name: "lib.decorators", kind: "script", kindModifiers: ".d.ts" },
+            { name: "lib.decorators.legacy", kind: "script", kindModifiers: ".d.ts" },
             { name: "ns", kind: "script", kindModifiers: ".ts" },
             { name: "user", kind: "script", kindModifiers: ".js" },
             { name: "node_modules", kind: "directory" },
diff --git a/tests/cases/fourslash/server/projectInfo01.ts b/tests/cases/fourslash/server/projectInfo01.ts
index 036aa5f0d4de6..8e03a15ca0127 100644
--- a/tests/cases/fourslash/server/projectInfo01.ts
+++ b/tests/cases/fourslash/server/projectInfo01.ts
@@ -14,11 +14,11 @@
 ////console.log("nothing");
 
 goTo.file("a.ts")
-verify.ProjectInfo(["/lib.d.ts", "a.ts"])
+verify.ProjectInfo(["/lib.d.ts", "/lib.decorators.d.ts", "/lib.decorators.legacy.d.ts", "a.ts"])
 goTo.file("b.ts")
-verify.ProjectInfo(["/lib.d.ts", "a.ts", "b.ts"])
+verify.ProjectInfo(["/lib.d.ts", "/lib.decorators.d.ts", "/lib.decorators.legacy.d.ts", "a.ts", "b.ts"])
 goTo.file("c.ts")
-verify.ProjectInfo(["/lib.d.ts", "a.ts", "b.ts", "c.ts"])
+verify.ProjectInfo(["/lib.d.ts", "/lib.decorators.d.ts", "/lib.decorators.legacy.d.ts", "a.ts", "b.ts", "c.ts"])
 goTo.file("d.ts")
-verify.ProjectInfo(["/lib.d.ts", "d.ts"])
+verify.ProjectInfo(["/lib.d.ts", "/lib.decorators.d.ts", "/lib.decorators.legacy.d.ts", "d.ts"])
 
diff --git a/tests/cases/fourslash/server/projectInfo02.ts b/tests/cases/fourslash/server/projectInfo02.ts
index fb7c9cf8257cb..724ed476dd169 100644
--- a/tests/cases/fourslash/server/projectInfo02.ts
+++ b/tests/cases/fourslash/server/projectInfo02.ts
@@ -10,4 +10,4 @@
 ////{ "files": ["a.ts", "b.ts"] }
 
 goTo.file("a.ts")
-verify.ProjectInfo(["/lib.d.ts", "a.ts", "b.ts", "tsconfig.json"])
+verify.ProjectInfo(["/lib.d.ts", "/lib.decorators.d.ts", "/lib.decorators.legacy.d.ts", "a.ts", "b.ts", "tsconfig.json"])
diff --git a/tests/cases/fourslash/server/projectWithNonExistentFiles.ts b/tests/cases/fourslash/server/projectWithNonExistentFiles.ts
index a52c5f8918f9d..2d4e0dbc68c08 100644
--- a/tests/cases/fourslash/server/projectWithNonExistentFiles.ts
+++ b/tests/cases/fourslash/server/projectWithNonExistentFiles.ts
@@ -10,4 +10,4 @@
 ////{ "files": ["a.ts", "c.ts", "b.ts"] }
 
 goTo.file("a.ts");
-verify.ProjectInfo(["/lib.d.ts", "a.ts", "b.ts", "tsconfig.json"])
+verify.ProjectInfo(["/lib.d.ts", "/lib.decorators.d.ts", "/lib.decorators.legacy.d.ts", "a.ts", "b.ts", "tsconfig.json"])