我从 Jest 27 迁移到 28。如果我现在尝试开始测试,我只会收到以下错误:
\n \xe2\x97\x8f Test suite failed to run\n\n TypeError: Cannot read properties of undefined (reading 'extend')\n\n at createJestExpect (node_modules/@jest/expect/build/index.js:35:19)\n at Object.<anonymous> (node_modules/@jest/expect/build/index.js:47:20)\n at TestScheduler.scheduleTests (node_modules/@jest/core/build/TestScheduler.js:317:13)\n at runJest (node_modules/@jest/core/build/runJest.js:407:19)\n at _run10000 (node_modules/@jest/core/build/cli/index.js:338:7)\n at runCLI (node_modules/@jest/core/build/cli/index.js:190:3)\n\nTest Suites: 1 failed, 1 total\nRun Code Online (Sandbox Code Playgroud)\n我什至无法调试我的测试,因为内部测试设置已经失败。任何线索,出了什么问题吗?
\nLup*_*ina 45
这是当选项包含时出现的错误(请参阅此处) 。moduleDirectories"."
要解决此问题,请更改"."为"<rootDir>":
moduleDirectories: ["node_modules", "<rootDir>"]
Run Code Online (Sandbox Code Playgroud)
或者,如果您使用 jest.config.js文件,则可以更改"."为__dirname:
module.exports = {
moduleDirectories: ["node_modules", __dirname]
};
Run Code Online (Sandbox Code Playgroud)
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