[@typescript/vfs] Fix moduleDetection compiler option is not work…

…ing.
microsoft · Mar 2, 2024 · 3458b37 · 3458b37
1 parent 2fa00c5
commit 3458b37
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Showing 2 changed files with 19 additions and 2 deletions.
diff --git a/packages/typescript-vfs/src/index.ts b/packages/typescript-vfs/src/index.ts
@@ -555,14 +555,14 @@ export function createVirtualCompilerHost(sys: System, compilerOptions: Compiler
       // getDefaultLibLocation: () => '/',
       getDirectories: () => [],
       getNewLine: () => sys.newLine,
-      getSourceFile: fileName => {
+      getSourceFile: (fileName, languageVersionOrOptions) => {
         return (
           sourceFiles.get(fileName) ||
           save(
             ts.createSourceFile(
               fileName,
               sys.readFile(fileName)!,
-              compilerOptions.target || defaultCompilerOptions(ts).target!,
+              languageVersionOrOptions,
               false
             )
           )

diff --git a/packages/typescript-vfs/test/index.test.ts b/packages/typescript-vfs/test/index.test.ts
@@ -228,3 +228,20 @@ it("empty file content", async () => {
   })
 })
 
+it("moduleDetection options", async () => {
+  const options: ts.CompilerOptions = {
+    module: ts.ModuleKind.AMD,
+    moduleDetection: ts.ModuleDetectionKind.Force,
+  }
+  const fsMap = createDefaultMapFromNodeModules(options, ts)
+  fsMap.set("index.ts", "let foo = 'foo'")
+  const system = createSystem(fsMap)
+  const host = createVirtualCompilerHost(system, options, ts)
+  const program = ts.createProgram({
+    rootNames: ["index.ts"],
+    options,
+    host: host.compilerHost,
+  })
+  program.emit()
+  expect(fsMap.get("index.js")).toEqual(`define(["require", "exports"], function (require, exports) {\n    "use strict";\n    Object.defineProperty(exports, "__esModule", { value: true });\n    var foo = 'foo';\n});\n`)
+})