Question

我有一个开玩笑的测试文件 hello.test.js 。这将从另一个文件 robot.js 导入类Robot。

hello.test.js

import { Robot } from './robot'
 .
 .

robot.js 从另一个文件导入另一个类x。

robot.js

import { x } from 'file'
 .
 .

Jest无法导入x。我收到以下错误。

  ● 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.

 import {
           ^

    SyntaxError: Unexpected token {

我在package.json中拥有

"@babel/core": "^7.4.5",
"@babel/preset-env": "^7.4.5",
"babel-jest": "^24.8.0",
"jest": "^24.8.0",
"regenerator-runtime": "^0.13.2",
"@babel/plugin-proposal-class-properties": "^7.4.4"

我的jest.config.js有：

  transform: {
    '^.+\\.js$': 'babel-jest'
  },

这是我的babel.config.js

const presets = [
  "@babel/preset-env"
]

const plugins = [
  "@babel/plugin-proposal-class-properties"
]

module.exports = {
  presets,
  plugins
}

import可以在我使用相同的babel配置运行webpack时找到工作，但是如何使其在玩笑测试中起作用。

感谢您的帮助！

SyntaxError：意外令牌{-在Jest测试期间

0 个答案: