fix(type-compiler): set ts compiler options target to es2022 if higher than es20222 when resolving global lib files (#516)

Author: marcus-sa

package-lock.json

@@ -38,7 +38,7 @@
   "dependencies": {
     "@deepkit/type-spec": "^1.0.1-alpha.108",
     "@marcj/ts-clone-node": "^2.0.0",
-    "@typescript/vfs": "^1.4.0",
+    "@typescript/vfs": "1.5.0",
     "get-tsconfig": "^4.5.0",
     "lz-string": "^1.4.4",
     "micromatch": "^4.0.5",

packages/type-compiler/package.json

@@ -1883,11 +1883,11 @@ export class ReflectionTransformer implements CustomTransformer {
 
         //todo also read compiler options "types" + typeRoot
 
-        //currently knownLibFilesForCompilerOptions from @typescript/vfs doesn't return correct lib files for ES2022,
-        //so we switch here to es2021 if bigger than es2021.
+        //currently knownLibFilesForCompilerOptions from @typescript/vfs doesn't return correct lib files for esnext,
+        //so we switch here to es2022 if bigger than es2022.
         const options = { ...this.compilerOptions };
-        if (options.target && (options.target > ScriptTarget.ES2021 && options.target < ScriptTarget.ESNext)) {
-            options.target = ScriptTarget.ES2021;
+        if (options.target && (options.target === ScriptTarget.ESNext)) {
+            options.target = ScriptTarget.ES2022;
         }
         const libs = knownLibFilesForCompilerOptions(options, ts);
 

packages/type-compiler/src/compiler.ts

@@ -22,6 +22,20 @@ test('resolve import ts', () => {
     expect(res.logger).toContain('Logger.__type =');
 });
 
+test('use global types with esnext target', () => {
+    const res = transpile({
+        'app': `
+            interface User {}
+            export type a = Partial<User>;
+        `
+    }, {
+        target: ts.ScriptTarget.ESNext,
+    });
+
+    expect(res.app).toContain('const __ΩPartial = ');
+    expect(res.app).toContain('() => __ΩPartial');
+});
+
 test('resolve import d.ts', () => {
     const res = transpile({
         'app': `

packages/type-compiler/tests/transpile.spec.ts

@@ -65,7 +65,7 @@ export function transform(files: Record<string, string>, options: ts.CompilerOpt
  * The first entry in files is executed as main script
  */
 export function transpileAndRun(files: Record<string, string>, options: ts.CompilerOptions = {}): any {
-    const source = transpile(files);
+    const source = transpile(files, options);
     console.log('transpiled', source);
     const first = Object.keys(files)[0];