node.js - 运行 Mocha 测试会导致 “Unexpected reserved word”错误

步骤:npm test
错误:“意外的保留字”

我今天早些时候进行了这项工作，但我不知道我所做的任何更改都可能导致回归。当我运行npm test时，我得到“意外的保留字”，它指向ES6导入语句。我的理解是--compilers js:babel-register应该可以解决该问题。

我尝试在全局和本地安装babel-core，而改为使用babel-core/register。结果相同。

这是我的package.json。

{
  "name": "fresh",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "remotedev": "remotedev --hostname=localhost --port=8000",
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "mocha --compilers js:babel-register 'test/**/*.test.js'",
    "test:watch": "npm run test -- --watch --watch-extensions jsx"
  },
  "dependencies": {
    "immutable": "^3.7.6",
    "lodash": "^4.5.1",
    "ramda": "^0.19.1",
    "react-native": "^0.21.0",
    "react-native-router-flux": "^2.3.8",
    "react-native-sortable-listview": "0.0.5",
    "react-redux": "^4.4.0",
    "redux": "^3.3.1",
    "redux-saga": "^0.9.1",
    "reselect": "^2.0.3"
  },
  "devDependencies": {
    "babel-register": "^6.7.2",
    "chai": "^3.5.0",
    "chai-immutable": "^1.5.3",
    "mocha": "^2.4.5",
    "redux-devtools-filter-actions": "^1.1.0",
    "remote-redux-devtools": "^0.1.2",
    "remotedev-server": "0.0.3"
  }
}

这是2个教程，表明这应该起作用。

https://onsen.io/blog/mocha-chaijs-unit-test-coverage-es6/

http://jamesknelson.com/testing-in-es6-with-mocha-and-babel-6/

再次，我今天早些时候已成功使用此脚本执行了测试。

最佳答案

npm install babel-preset-es2015

然后使用创建.babelrc文件

{
  "presets": ["es2015"]
}