Rename switch --emitDeclarationsOnly to --emitDeclarationOnly (#21651)

* Rename `--emitDeclarationsOnly` to `--renameDeclarationOnly`

* Rename test files

Author: mhegazy

Diff for: src/compiler/commandLineParser.ts

@@ -187,7 +187,7 @@ namespace ts {
             description: Diagnostics.Generates_corresponding_d_ts_file,
         },
         {
-            name: "emitDeclarationsOnly",
+            name: "emitDeclarationOnly",
             type: "boolean",
             category: Diagnostics.Advanced_Options,
             description: Diagnostics.Only_emit_d_ts_declaration_files,

Diff for: src/compiler/emitter.ts

@@ -135,7 +135,7 @@ namespace ts {
 
         function emitSourceFileOrBundle({ jsFilePath, sourceMapFilePath, declarationFilePath }: EmitFileNames, sourceFileOrBundle: SourceFile | Bundle) {
             // Make sure not to write js file and source map file if any of them cannot be written
-            if (!host.isEmitBlocked(jsFilePath) && !compilerOptions.noEmit && !compilerOptions.emitDeclarationsOnly) {
+            if (!host.isEmitBlocked(jsFilePath) && !compilerOptions.noEmit && !compilerOptions.emitDeclarationOnly) {
                 if (!emitOnlyDtsFiles) {
                     printSourceFileOrBundle(jsFilePath, sourceMapFilePath, sourceFileOrBundle);
                 }

Diff for: src/compiler/program.ts

@@ -2201,13 +2201,13 @@ namespace ts {
                 programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "checkJs", "allowJs"));
             }
 
-            if (options.emitDeclarationsOnly) {
+            if (options.emitDeclarationOnly) {
                 if (!options.declaration) {
-                    createDiagnosticForOptionName(Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "emitDeclarationsOnly", "declarations");
+                    createDiagnosticForOptionName(Diagnostics.Option_0_cannot_be_specified_without_specifying_option_1, "emitDeclarationOnly", "declarations");
                 }
 
                 if (options.noEmit) {
-                    createDiagnosticForOptionName(Diagnostics.Option_0_cannot_be_specified_with_option_1, "emitDeclarationsOnly", "noEmit");
+                    createDiagnosticForOptionName(Diagnostics.Option_0_cannot_be_specified_with_option_1, "emitDeclarationOnly", "noEmit");
                 }
             }
 
@@ -2233,7 +2233,7 @@ namespace ts {
                 const emitHost = getEmitHost();
                 const emitFilesSeen = createMap<true>();
                 forEachEmittedFile(emitHost, (emitFileNames) => {
-                    if (!options.emitDeclarationsOnly) {
+                    if (!options.emitDeclarationOnly) {
                         verifyEmitFilePath(emitFileNames.jsFilePath, emitFilesSeen);
                     }
                     verifyEmitFilePath(emitFileNames.declarationFilePath, emitFilesSeen);

Diff for: src/compiler/types.ts

@@ -4025,7 +4025,7 @@ namespace ts {
         /** configFile is set as non enumerable property so as to avoid checking of json source files */
         /* @internal */ readonly configFile?: JsonSourceFile;
         declaration?: boolean;
-        emitDeclarationsOnly?: boolean;
+        emitDeclarationOnly?: boolean;
         declarationDir?: string;
         /* @internal */ diagnostics?: boolean;
         /* @internal */ extendedDiagnostics?: boolean;

Diff for: src/harness/harness.ts

@@ -1255,9 +1255,9 @@ namespace Harness {
 
             if (result.errors.length === 0) {
                 if (options.declaration) {
-                    if (options.emitDeclarationsOnly) {
+                    if (options.emitDeclarationOnly) {
                         if (result.files.length > 0 || result.declFilesCode.length === 0) {
-                            throw new Error("Only declaration files should be generated when emitDeclarationsOnly:true");
+                            throw new Error("Only declaration files should be generated when emitDeclarationOnly:true");
                         }
                     }
                     else if (result.declFilesCode.length !== result.files.length) {
@@ -1664,7 +1664,7 @@ namespace Harness {
         }
 
         export function doJsEmitBaseline(baselinePath: string, header: string, options: ts.CompilerOptions, result: CompilerResult, tsConfigFiles: Harness.Compiler.TestFile[], toBeCompiled: Harness.Compiler.TestFile[], otherFiles: Harness.Compiler.TestFile[], harnessSettings: Harness.TestCaseParser.CompilerSettings) {
-            if (!options.noEmit && !options.emitDeclarationsOnly && result.files.length === 0 && result.errors.length === 0) {
+            if (!options.noEmit && !options.emitDeclarationOnly && result.files.length === 0 && result.errors.length === 0) {
                 throw new Error("Expected at least one js file to be emitted or at least one error to be created.");
             }
 

Diff for: tests/baselines/reference/api/tsserverlibrary.d.ts

@@ -2301,7 +2301,7 @@ declare namespace ts {
         charset?: string;
         checkJs?: boolean;
         declaration?: boolean;
-        emitDeclarationsOnly?: boolean;
+        emitDeclarationOnly?: boolean;
         declarationDir?: string;
         disableSizeLimit?: boolean;
         downlevelIteration?: boolean;

Diff for: tests/baselines/reference/api/typescript.d.ts

@@ -2301,7 +2301,7 @@ declare namespace ts {
         charset?: string;
         checkJs?: boolean;
         declaration?: boolean;
-        emitDeclarationsOnly?: boolean;
+        emitDeclarationOnly?: boolean;
         declarationDir?: string;
         disableSizeLimit?: boolean;
         downlevelIteration?: boolean;

Diff for: tests/baselines/reference/declFileEmitDeclarationsOnly.js renamed to tests/baselines/reference/declFileEmitDeclarationOnly.js

@@ -0,0 +1,7 @@
+error TS5052: Option 'emitDeclarationOnly' cannot be specified without specifying option 'declarations'.
+
+
+!!! error TS5052: Option 'emitDeclarationOnly' cannot be specified without specifying option 'declarations'.
+==== tests/cases/compiler/hello.ts (0 errors) ====
+    var hello = "yo!";
+    

Diff for: tests/baselines/reference/declFileEmitDeclarationsOnly.symbols renamed to tests/baselines/reference/declFileEmitDeclarationOnly.symbols

@@ -0,0 +1,9 @@
+error TS5052: Option 'emitDeclarationOnly' cannot be specified without specifying option 'declarations'.
+error TS5053: Option 'emitDeclarationOnly' cannot be specified with option 'noEmit'.
+
+
+!!! error TS5052: Option 'emitDeclarationOnly' cannot be specified without specifying option 'declarations'.
+!!! error TS5053: Option 'emitDeclarationOnly' cannot be specified with option 'noEmit'.
+==== tests/cases/compiler/hello.ts (0 errors) ====
+    var hello = "yo!";
+    

Diff for: tests/baselines/reference/declFileEmitDeclarationsOnly.types renamed to tests/baselines/reference/declFileEmitDeclarationOnly.types

@@ -1,5 +1,5 @@
 // @declaration: true
-// @emitDeclarationsOnly: true
+// @emitDeclarationOnly: true
 
 // @filename: helloworld.ts
 const Log = {

Diff for: tests/baselines/reference/declFileEmitDeclarationOnlyError1.errors.txt

@@ -1,4 +1,4 @@
-// @emitDeclarationsOnly: true
+// @emitDeclarationOnly: true
 
 // @filename: hello.ts
 var hello = "yo!";

Diff for: tests/baselines/reference/declFileEmitDeclarationsOnlyError1.symbols renamed to tests/baselines/reference/declFileEmitDeclarationOnlyError1.symbols

@@ -1,5 +1,5 @@
 // @noEmit: true
-// @emitDeclarationsOnly: true
+// @emitDeclarationOnly: true
 
 // @filename: hello.ts
 var hello = "yo!";