外部扩展配置(External Configurations)

webpack 允许使用任意语言定义配置文件。文件扩展支持列表 node-interpret 包中找到。webpack 将通过你选择的语言运行你的配置。

例如，如果你使用 coffeescript，你的文件将如下所示：

webpack.config.coffee

HtmlWebpackPlugin = require('html-webpack-plugin')
webpack = require('webpack')
path = require('path')
config =
  entry: './path/to/my/entry/file.js'
  output:
    path: path.resolve(__dirname, 'dist')
    filename: 'my-first-webpack.bundle.js'
  module: rules: [ {
    test: /\.(js|jsx)$/
    use: 'babel-loader'
  } ]
  plugins: [
    new (webpack.optimize.UglifyJsPlugin)
    new HtmlWebpackPlugin(template: './src/index.html')
  ]
module.exports = config

?> loader settings, e.g. sassLoader, eslint sections

原文：https://webpack.js.org/configuration/external-configs/