fix-export-default-worker

Author: anje123

CHANGELOG.md

@@ -3,15 +3,27 @@
 ### Features
 
 ### Fixes
-- `[jest-worker, jest-haste-map, jest-runner, jest-reporters]` Fix: jest-worker: should not expose `.default` babel interop ([#10623] (https://github.com/facebook/jest/pull/10623))
-- `[jest-runner, jest-runtime]` fix: `require.main` undefined with `createRequire()` ([#10610](https://github.com/facebook/jest/pull/10610))
-- `[jest-validate]` Show suggestion only when unrecognized cli param is longer than 1 character ([#10604](https://github.com/facebook/jest/pull/10604))
-- `[jest-validate]` Validate `testURL` as CLI option ([#10595](https://github.com/facebook/jest/pull/10595))
 
 ### Chore & Maintenance
 
 ### Performance
 
+## 26.5.3
+
+### Features
+
+- `[jest-runtime]` add support for dynamic `import()` from CommonJS ([#10620](https://github.com/facebook/jest/pull/10620))
+- `[jest-worker, jest-haste-map, jest-runner, jest-reporters]` Fix: jest-worker: should not expose `.default` babel interop ([#10623] (https://github.com/facebook/jest/pull/10623))
+
+### Fixes
+
+- `[jest-runner, jest-runtime]` `require.main` should not be `undefined` with `createRequire()` ([#10610](https://github.com/facebook/jest/pull/10610))
+- `[jest-runtime]` add missing `module.path` property ([#10615](https://github.com/facebook/jest/pull/10615))
+- `[jest-runtime]` Add `mainModule` instance variable to runtime ([#10621](https://github.com/facebook/jest/pull/10621))
+- `[jest-runtime]` Evaluate Node core modules on dynamic `import()` ([#10622](https://github.com/facebook/jest/pull/10622))
+- `[jest-validate]` Show suggestion only when unrecognized cli param is longer than 1 character ([#10604](https://github.com/facebook/jest/pull/10604))
+- `[jest-validate]` Validate `testURL` as CLI option ([#10595](https://github.com/facebook/jest/pull/10595))
+
 ## 26.5.2
 
 ### Fixes

e2e/__tests__/__snapshots__/nativeEsm.test.ts.snap

@@ -2,7 +2,7 @@
 
 exports[`on node ^12.16.0 || >=13.7.0 runs test with native ESM 1`] = `
 Test Suites: 1 passed, 1 total
-Tests:       12 passed, 12 total
+Tests:       14 passed, 14 total
 Snapshots:   0 total
 Time:        <<REPLACED>>
 Ran all test suites.

e2e/__tests__/requireMainIsolateModules.test.ts

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import runJest from '../runJest';
+
+test('`require.main` on using `jest.isolateModules` should not be undefined', () => {
+  const {exitCode} = runJest('require-main-isolate-modules');
+
+  expect(exitCode).toBe(0);
+});

e2e/native-esm/__tests__/native-esm.test.js

@@ -49,6 +49,13 @@ test('should support importing node core modules', () => {
   });
 });
 
+test('should support importing node core modules dynamically', async () => {
+  // it's important that this module has _not_ been imported at the top level
+  const assert = await import('assert');
+
+  expect(typeof assert.strictEqual).toBe('function');
+});
+
 test('dynamic import should work', async () => {
   const {double: importedDouble} = await import('../index');
 
@@ -62,6 +69,11 @@ test('import cjs', async () => {
   expect(half(4)).toBe(2);
 });
 
+test('import esm from cjs', async () => {
+  const {default: halfPromise} = await import('../fromEsm.cjs');
+  expect(await halfPromise(1)).toBe(2);
+});
+
 test('require(cjs) and import(cjs) should share caches', async () => {
   const require = createRequire(import.meta.url);
 

e2e/native-esm/fromEsm.cjs

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+module.exports = async num => {
+  const {double} = await import('./dynamicImport');
+
+  return double(num);
+};

e2e/require-main-isolate-modules/__tests__/index.test.js

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+let foo;
+
+jest.isolateModules(() => (foo = require('../index')));
+
+test('`require.main` on using `jest.isolateModules` should not be undefined', () => {
+  expect(foo()).toEqual(1);
+});

e2e/require-main-isolate-modules/child.js

@@ -0,0 +1,7 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+module.exports = 1;

e2e/require-main-isolate-modules/index.js

@@ -0,0 +1,7 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+module.exports = () => require.main.require('../child');

e2e/require-main-isolate-modules/package.json

@@ -0,0 +1,5 @@
+{
+  "jest": {
+    "testEnvironment": "node"
+  }
+}

lerna.json

@@ -1,5 +1,5 @@
 {
-  "version": "26.5.2",
+  "version": "26.5.3",
   "npmClient": "yarn",
   "packages": [
     "packages/*"