Vue.js Import Unexpected identifier + SyntaxError： Unexpected string

我在运行jest测试时遇到问题.我得到了一个意外的标识符

我已经try 过清理npm缓存和installing npm babel jest、polyfill、preset-es2015.我还try 了一些不同的配置.

这是我的babel.config.js美元

module.exports = {
  presets: [
    '@vue/app'
  ],
  env: {
    test: {
      plugins: [
        "transform-strict-mode",
        "transform-es2015-modules-commonjs",
        "transform-es2015-spread",
        "transform-es2015-destructuring",
        "transform-es2015-parameters"
      ]
    }
  }
}

还有我的jest config元Package.json

"jest": {
    "moduleFileExtensions": [
      "js",
      "json",
      "vue"
    ],
    "transform": {
      "^.+\\.js$": "babel-jest",
      ".*\\.(vue)$": "vue-jest"
    },
    "moduleNameMapper": {
      "^@/(.*)$": "<rootDir>/src/$1"
    }
  }

这里是错误.

Test suite failed to run

    PCROUTE\Test.test.js:3
    import _interopRequireDefault from "PCROUTE\\node_modules\\@babel\\runtime-corejs2/helpers/esm/interopRequireDefault";
           ^^^^^^^^^^^^^^^^^^^^^^

    SyntaxError: Unexpected identifier

我希望通过考试，但我收到了错误信息.我认为问题在于《巴别塔》中的env部分.配置.js

Edit: I'm also using windows 7，我认为这可能会导致前后混合的斜杠.

Edit2: I just tested it in Linux and it doesn't work.我都是前斜杠

 PCROUTE/src/tests/Test.test.js:3
    import _interopRequireDefault from "PCROUTE/node_modules/@babel/runtime-corejs2/helpers/esm/interopRequireDefault";
           ^^^^^^^^^^^^^^^^^^^^^^

    SyntaxError: Unexpected identifier

      at ScriptTransformer._transformAndBuildScript 

Edit 3: I saw a lot of people fixed it with [these lines](https://github.com/vuejs/vue-cli/issues/1879#issuecomment-409872897).

transformIgnorePatterns: [
    "node_modules/(?!(babel-jest|jest-vue-preprocessor)/)"
  ]

在jest config file人中.我添加了它们并运行了./node_modules/jest/bin/jest.js --clearCache，但它不起作用.

Edit 4:我刚刚在我的Jest 文件中添加了一些东西.删除了我babel文件中的一对

新Jest 文件

module.exports = {
    moduleFileExtensions: [
      'js',
      'jsx',
      'json',
      'vue'
    ],
    transform: {
      '^.+\\.vue$': 'vue-jest',
      '.+\\.(css|styl|less|sass|scss|svg|png|jpg|ttf|woff|woff2)$': 'jest-transform-stub',
      '^.+\\.jsx?$': 'babel-jest'
    },
    transformIgnorePatterns: [
      '/node_modules/'
    ],
    moduleNameMapper: {
      '^@/(.*)$': '<rootDir>/src/$1'
    },
    snapshotSerializers: [
      'jest-serializer-vue'
    ],
    testMatch: [
      '**/tests/**/*.test.(js|jsx|ts|tsx)|**/__tests__/*.(js|jsx|ts|tsx)'
    ],
    testURL: 'http://localhost/',
    watchPlugins: [
      'jest-watch-typeahead/filename',
      'jest-watch-typeahead/testname'
    ]
  }

除presets: @vue/app部分外，我还有deleted everything from my babel file部分.

这是我得到的新错误.

({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import "core-js/modules/es6.array.find";
                                                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    SyntaxError: Unexpected string