javascript - 错误 : Couldn't find preset "es2015" relative to directory

Question

当我尝试使用 babel 时出现以下错误。

Error: Couldn't find preset "es2015" relative to directory

webpack.config.js

module.exports = {
    entry: './main.js',
    ourput: {
        path:'./',
        filename:'index.js'
    },
    devServer:{
        inline:true,
        port:3333
    },
    module:{
        loaders:[
            {
                test:/\.js$/,
                exclude:/node_modules/,
                loader:'babel',
                query:{
                    presets:['es2015','react']
                }
            }
        ]
    }
}

包.json

{
  "name": "es6-react-setup",
  "version": "1.0.0",
  "main": "main.js",
  "dependencies": {
    "babel-core": "^6.11.4",
    "babel-preset-es2015": "^6.9.0",
    "babel-preset-react": "^6.11.1",
    "babel-loader": "^6.2.4",
    "react": "^15.2.1",
    "react-dom": "^15.2.1",
    "webpack": "^1.13.1"
  },
  "devDependencies": {},
  "scripts": {
    "start": "webpack-dev-server"
  },
  "author": "",
  "license": "ISC",
  "description": ""
}

终端输出

Answer 1

您需要配置 babel 才能使用这些预设。您可以将其添加到您的 package.json

  "babel": {
    "presets": [
      "es2015",
      "react"
    ]
  },

你也可以有一个 .babelrc 文件。

https://babeljs.io/docs/usage/babelrc/