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bable-jest

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参考

资源

bable-jest

安装

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npm i -D babel-jest

.babelrc
参考: JavaScript compiler: Babel

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{
  "env": {
    "test": {
      "presets": [
        [
          "@babel/preset-env",
          {
            "targets": {
              "node": "current"
            },
            "modules": "auto",
            "useBuiltIns": "usage",
            "corejs": {
              "version": 3,
              "proposals": true
            }
          }
        ]
      ]
    }
}

package.json

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{
  "scripts": {
    "test": "cross-env BABEL_ENV=test jest",
  }
}