jestjs - Jest 与 Babel ^7.0.0-beta.51 问题

Question

我遵循了你推荐的一切，让 Babel 7 与 Jest 一起工作。
我安装了@babel/core和 babel-core .还是不行。

{
  "devDependencies": {
    "@babel/cli": "^7.0.0-beta.51",
    "@babel/core": "^7.0.0-beta.51",
    "@babel/node": "^7.0.0-beta.51",
    "@babel/plugin-transform-modules-commonjs": "^7.0.0-beta.51",
    "@babel/preset-flow": "^7.0.0-beta.51",
    "babel-core": "^7.0.0-beta.51",
    "jest-cli": "^23.1.0"
  }
}

后 yarn jest

yarn run v1.9.0-20180612.1255
$ /Users/m/Desktop/k/node_modules/.bin/jest
 FAIL  packages/services/src/Client/__tests__/Client.js
  - Test suite failed to run

    Requires Babel "^7.0.0-0", but was loaded with "6.26.3". If you are sure you have a compatible version of @babel/core, it is likely that something in your build process is loading the wrong version. Inspect the stack trace of this error to look for the first entry that doesn't mention "@babel/core" or "babel-core" to see what is calling Babel.

      at throwVersionError (node_modules/@babel/helper-plugin-utils/lib/index.js:65:11)
      at Object.assertVersion (node_modules/@babel/helper-plugin-utils/lib/index.js:13:11)
      at _default (node_modules/@babel/plugin-transform-modules-commonjs/lib/index.js:51:7)
      at node_modules/@babel/helper-plugin-utils/lib/index.js:19:12
          at Array.map (<anonymous>)

Answer 1

在 Jest GitHub 问题上看到您的问题——我认为是您提出的问题，但我最终通过 create-react-app repo 解决了这个问题。并了解他们如何整合 Jest。具体来说， packages/react-scripts/package.json 文件有你需要的东西。

"@babel/core": "7.0.0-beta.46",
"@babel/runtime": "7.0.0-beta.46",
"autoprefixer": "8.5.0",
+ "babel-core": "7.0.0-bridge.0",
"babel-eslint": "8.2.3",
"babel-jest": "22.4.3",

添加带有 + 的行，或更改您拥有的版本，您应该会很好。