fix(compiler): support Node16/NodeNext value for target

Fixes #4198
kulshekhar · Jul 9, 2024 · 089bd16 · 089bd16
1 parent 0e34b7a
commit 089bd16
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Showing 4 changed files with 42 additions and 33 deletions.
diff --git a/e2e/native-esm-ts/jest.config.js b/e2e/native-esm-ts/jest.config.js
@@ -1,12 +1,13 @@
-import { pathsToModuleNameMapper } from '../../dist/index.js'
+import { pathsToModuleNameMapper, createDefaultEsmPreset } from '../../dist/index.js'
 import { createRequire } from 'module'
 
 const require = createRequire(import.meta.url)
 const tsConfig = require('./tsconfig.json')
+const esmPreset = createDefaultEsmPreset()
 
 /** @type {import('../../dist').JestConfigWithTsJest} */
 export default {
-  extensionsToTreatAsEsm: ['.ts'],
+  ...esmPreset,
   resolver: '<rootDir>/mjs-resolver.ts',
   moduleNameMapper: pathsToModuleNameMapper(tsConfig.compilerOptions.paths, {
     prefix: '<rootDir>',

diff --git a/examples/react-app/tsconfig-esm.spec.json b/examples/react-app/tsconfig-esm.spec.json
@@ -1,6 +1,7 @@
 {
   "extends": "./tsconfig.spec.json",
   "compilerOptions": {
+    "module": "ESNext",
     "esModuleInterop": true
   }
 }
diff --git a/src/legacy/compiler/__snapshots__/ts-compiler.spec.ts.snap b/src/legacy/compiler/__snapshots__/ts-compiler.spec.ts.snap
@@ -20,15 +20,15 @@ exports[`TsCompiler getCompiledOutput isolatedModules false should compile codes
 {
   "allowSyntheticDefaultImports": true,
   "esModuleInterop": true,
-  "module": 99,
+  "module": 1,
 }
 `;
 
 exports[`TsCompiler getCompiledOutput isolatedModules false should compile codes with useESM {"babelConfig": true, "supportsStaticESM": false, "useESM": true} 1`] = `
 {
-  "allowSyntheticDefaultImports": true,
+  "allowSyntheticDefaultImports": undefined,
   "esModuleInterop": true,
-  "module": 99,
+  "module": 1,
 }
 `;
 
@@ -52,14 +52,14 @@ exports[`TsCompiler getCompiledOutput isolatedModules true should transpile code
 {
   "allowSyntheticDefaultImports": true,
   "esModuleInterop": true,
-  "module": 99,
+  "module": 1,
 }
 `;
 
 exports[`TsCompiler getCompiledOutput isolatedModules true should transpile code with config {"babelConfig": true, "supportsStaticESM": false, "useESM": true} 1`] = `
 {
-  "allowSyntheticDefaultImports": true,
+  "allowSyntheticDefaultImports": undefined,
   "esModuleInterop": true,
-  "module": 99,
+  "module": 1,
 }
 `;
diff --git a/src/legacy/compiler/ts-compiler.ts b/src/legacy/compiler/ts-compiler.ts
@@ -146,34 +146,41 @@ export class TsCompiler implements TsCompilerInstance {
     return importedModulePaths
   }
 
-  getCompiledOutput(fileContent: string, fileName: string, options: TsJestCompileOptions): CompiledOutput {
-    let moduleKind = this._initialCompilerOptions.module
-    let esModuleInterop = this._initialCompilerOptions.esModuleInterop
-    let allowSyntheticDefaultImports = this._initialCompilerOptions.allowSyntheticDefaultImports
-    const currentModuleKind = this._compilerOptions.module
-    const isEsmMode = this.configSet.useESM && options.supportsStaticESM
-    if (
-      (this.configSet.babelJestTransformer || (!this.configSet.babelJestTransformer && options.supportsStaticESM)) &&
-      this.configSet.useESM
-    ) {
-      moduleKind =
-        !moduleKind ||
-        (moduleKind &&
-          ![this._ts.ModuleKind.ES2015, this._ts.ModuleKind.ES2020, this._ts.ModuleKind.ESNext].includes(moduleKind))
-          ? this._ts.ModuleKind.ESNext
-          : moduleKind
-      // Make sure `esModuleInterop` and `allowSyntheticDefaultImports` true to support import CJS into ESM
-      esModuleInterop = true
-      allowSyntheticDefaultImports = true
-    } else {
-      moduleKind = this._ts.ModuleKind.CommonJS
+  private fixupCompilerOptionsForModuleKind(compilerOptions: CompilerOptions, isEsm: boolean): CompilerOptions {
+    if (!isEsm) {
+      const moduleKind = compilerOptions.module ?? this._ts.ModuleKind.CommonJS
+      const moduleKindValue = [
+        this._ts.ModuleKind.CommonJS,
+        this._ts.ModuleKind.Node16,
+        this._ts.ModuleKind.NodeNext,
+      ].includes(moduleKind)
+        ? moduleKind
+        : this._ts.ModuleKind.CommonJS
+
+      return {
+        ...compilerOptions,
+        module: moduleKindValue,
+      }
     }
-    this._compilerOptions = {
-      ...this._compilerOptions,
-      allowSyntheticDefaultImports,
-      esModuleInterop,
+
+    const moduleKind = compilerOptions.module ?? this._ts.ModuleKind.ESNext
+    const esModuleInterop = [this._ts.ModuleKind.Node16, this._ts.ModuleKind.NodeNext].includes(moduleKind)
+      ? true
+      : compilerOptions.esModuleInterop
+
+    return {
+      ...compilerOptions,
       module: moduleKind,
+      esModuleInterop: esModuleInterop ?? false,
+      allowSyntheticDefaultImports: esModuleInterop ?? compilerOptions.allowSyntheticDefaultImports,
     }
+  }
+
+  getCompiledOutput(fileContent: string, fileName: string, options: TsJestCompileOptions): CompiledOutput {
+    const moduleKind = this._initialCompilerOptions.module
+    const currentModuleKind = this._compilerOptions.module
+    const isEsmMode = this.configSet.useESM && options.supportsStaticESM
+    this._compilerOptions = this.fixupCompilerOptionsForModuleKind(this._initialCompilerOptions, isEsmMode)
     if (this._languageService) {
       this._logger.debug({ fileName }, 'getCompiledOutput(): compiling using language service')