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"build": "babel src -d lib" 运行 npm run build 即可把 src 目录编译输出到 lib npm install --save-dev babel-preset-es2015 这个是把es6进行编译 根目录创建一个名为 .babelrc 的文件,里面配置如下内容:新建一个文件名为.babelrc.(在win7下),linux则直接.babelrc .babelrc 内容 为 { "presets": [ "es2015" ] } npm install --save-dev babel-preset-react 编译react npm install -save-dev babel-polyfill Babel 默认只转换新的 JavaScript 句法(syntax),而不转换新的 API ,比如 Iterator、Generator、Set、Maps、Proxy、Reflect、Symbol、Promise 等全局对象,以及一些定义在全局对象上的方法(比如 Object.assign)都不会转码。Babel 默认不转码的 API 非常多,详细清单可以查看 definitions.js 文件 然后,在需要使用的文件的顶部引入 import "babel-polyfill" node.js 中: require('babel-polyfill'); webpack.config.js 中: module.exports = { entry: ['babel-polyfill', './app/js'] } 最好执行下面命令 npm install webpack-dev-server -g npm install webpack-dev-server --save-dev webpack-dev-server --hot --inline
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