webpack实战（二）-loader

想必大家都要所了解，ES6某些语法在浏览器中还不能识别，这时我们肯定会想到转化为ES5，如何转换呢？webpack就有这样的功能。如何实现的呢？通过babel-loader。接下来我们看看loader。用法可以在webpack官网或者npm官网中搜索babel-loader
首先在命令行中安装babel-loader

npm install --save-dev babel-loader babel-core babel-preset-env webpack

webpack.config.js

module: {    loaders: [        test: /.\js?$/,        loader: 'babel-loader',        exclude: /node_modules/,        options: {            presets: ['nev']        }    ]}