Fix:jest-worker:should-not-expose--babel-interop

Author: anje123

CHANGELOG.md

@@ -30,6 +30,7 @@
 - `[jest-transform]` [**BREAKING**] Refactor API to pass an options bag around rather than multiple boolean options ([#10753](https://github.com/facebook/jest/pull/10753))
 - `[jest-transform]` [**BREAKING**] Refactor API of transformers to pass an options bag rather than separate `config` and other options
 - `[pretty-format]` [**BREAKING**] Convert to ES Modules ([#10515](https://github.com/facebook/jest/pull/10515))
+- `[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))
 
 ### Chore & Maintenance
 

packages/jest-haste-map/src/__tests__/index.test.js

@@ -19,8 +19,8 @@ jest.mock('child_process', () => ({
   execSync() {},
 }));
 
-jest.mock('jest-worker', () =>
-  jest.fn(worker => {
+jest.mock('jest-worker', () => ({
+  Worker: jest.fn(worker => {
     mockWorker = jest.fn((...args) => require(worker).worker(...args));
     mockEnd = jest.fn();
 
@@ -29,7 +29,7 @@ jest.mock('jest-worker', () =>
       worker: mockWorker,
     };
   }),
-);
+}));
 
 jest.mock('../crawlers/node');
 jest.mock('../crawlers/watchman', () =>
@@ -1201,7 +1201,7 @@ describe('HasteMap', () => {
   });
 
   it('distributes work across workers', () => {
-    const jestWorker = require('jest-worker');
+    const jestWorker = require('jest-worker').Worker;
     const path = require('path');
     const dependencyExtractor = path.join(__dirname, 'dependencyExtractor.js');
     return new HasteMap({

packages/jest-runner/src/__tests__/testRunner.test.ts

@@ -11,8 +11,8 @@ import TestRunner from '../index';
 
 let mockWorkerFarm;
 
-jest.mock('jest-worker', () =>
-  jest.fn(
+jest.mock('jest-worker', () => ({
+  Worker: jest.fn(
     worker =>
       (mockWorkerFarm = {
         end: jest.fn().mockResolvedValue({forceExited: false}),
@@ -21,7 +21,7 @@ jest.mock('jest-worker', () =>
         worker: jest.fn((data, callback) => require(worker)(data, callback)),
       }),
   ),
-);
+}));
 
 jest.mock('../testWorker', () => {});