Jestjs 巴贝尔开玩笑不'；我不能开玩笑

我有一个作为插件的代码文件夹，所以它是主目录的子目录。主目录正确运行使用导入语句的测试，但子文件夹不正确。子文件夹有自己的。它们发布在下面

B.法律改革委员会

    {
      "presets": [
        "@babel/preset-env"
      ],
      "plugins": [
        ["@babel/plugin-proposal-decorators", { "legacy": true }],
        "@babel/plugin-proposal-function-sent",
        "@babel/plugin-proposal-export-namespace-from",
        "@babel/plugin-proposal-numeric-separator",
        "@babel/plugin-proposal-throw-expressions",
        "@babel/plugin-proposal-class-properties",
        "@babel/plugin-transform-runtime",
        "@babel/plugin-transform-modules-commonjs",
        [
          "module-resolver",
          {
            "alias": {
              "example-lib": "./src"
            }
          }
        ]
      ],
      "env": {
        "test": {
          "presets": [
            [
              "@babel/preset-env",
              {
                "modules": "commonjs"
              }
            ]
          ]
        }
      }
    }

package.json

      "jest": {
    "transform": {
      "^.+\\.jsx?$": "babel-jest"
    }
  }

    "devDependencies": {
    "@babel/core": "^7.3.4",
    "@babel/plugin-transform-modules-commonjs": "^7.2.0",
    "@babel/preset-env": "^7.3.4",
    "example-lib": "^0.11.4",
    "babel-jest": "^24.5.0"
  },

开玩笑——调试

错误本身：

  ● Test suite failed to run

Jest encountered an unexpected token

This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.

By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".

Here's what you can do:
 • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
 • If you need a custom transformation specify a "transform" option in your config.
 • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.

You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html

Details:

/Users/user/development/repo/lib/plugin/test/SystemDataService.spec.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import { example } from './helpers';
                                                                                                ^

SyntaxError: Unexpected token {

  at ScriptTransformer._transformAndBuildScript (../../node_modules/jest-runtime/build/ScriptTransformer.js:440:17)

● 测试套件无法运行
Jest遇到了意外的标记
这通常意味着您正试图导入Jest无法解析的文件，例如，它不是纯JavaScript。
默认情况下，如果Jest看到一个Babel配置，它将使用它来转换您的文件，忽略“node_modules”。
以下是您可以做的：
•要转换某些“节点模块”文件，可以在配置中指定自定义“transformIgnorePatterns”。
•如果需要自定义转换，请在配置中指定“转换”选项。
•如果您只是想模拟您的非JS模块（例如二进制资产），您可以使用“moduleNameMapper”配置选项将其剔除。
您将在文档中找到这些配置选项的更多详细信息和示例：
https://jestjs.io/docs/en/configuration.html
细节：
/Users/user/development/repo/lib/plugin/test/SystemDataService.spec.js:1
（{“Object.”：函数（模块、导出、require、u dirname、u filename、全局、jest）{import{example}from./helpers'；
^
SyntaxError:意外标记{
在ScriptTransformer.\u transformAndBuildScript（../../node\u modules/jest runtime/build/ScriptTransformer.js:440:17）

  ● Test suite failed to run

Jest encountered an unexpected token

This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.

By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".

Here's what you can do:
 • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
 • If you need a custom transformation specify a "transform" option in your config.
 • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.

You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html

Details:

/Users/user/development/repo/lib/plugin/test/SystemDataService.spec.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import { example } from './helpers';
                                                                                                ^

SyntaxError: Unexpected token {

  at ScriptTransformer._transformAndBuildScript (../../node_modules/jest-runtime/build/ScriptTransformer.js:440:17)