setup

$ npm install webpack --save-dev # 全局安裝依賴
# or
$ npm install webpack-dev-server --save-dev # 安裝webpack調(diào)試工具

basic config

// config/webpack.config.js
const webpack = require('webpack');

// 配置目錄
// 因?yàn)槲覀兊膚ebpack.config.js文件不在項(xiàng)目根目錄下，所以需要一個(gè)路徑的配置
const path = require('path');
const CURRENT_PATH = path.resolve(__dirname); // 獲取到當(dāng)前目錄
const ROOT_PATH = path.join(__dirname, '../'); // 項(xiàng)目根目錄
const MODULES_PATH = path.join(ROOT_PATH, './node_modules'); // node包目錄
const BUILD_PATH = path.join(ROOT_PATH, './public/assets'); // 最后輸出放置公共資源的目錄

module.exports = {
  context: path.join(__dirname, '../'), // 設(shè)置webpack配置中指向的默認(rèn)目錄為項(xiàng)目根目錄
  entry: {
    index: './public/pages/index.js',
    public: './public/pages/public.js'
  },
  output: {
    path: BUILD_PATH, // 設(shè)置輸出目錄
    filename: '[name].bundle.js', // 輸出文件名
  },
  resolve: {
    extensions: ['', '.js', '.jsx', '.coffee'] // 配置簡(jiǎn)寫(xiě)，配置過(guò)后，書(shū)寫(xiě)該文件路徑的時(shí)候可以省略文件后綴
  },
  module: {
    loaders: [
      // loader 扔在這里
    ]
  },
  plugins: [
    // 插件扔在這里
  ]
}

loaders

//less 、 sacc同理
$ npm install less --save-dev # install less

$ npm install css-loader style-loader --save-dev # install style-loader, css-loader

$ npm install less less-loader --save-dev # 基于style-loader,css-loader

install url loader

//用來(lái)處理圖片和字體文件
$ npm install file-loader --save-dev
$ npm install url-loader --save-dev

install babel loader

//ES6
$ npm install babel-loader babel-core babel-preset-es2015 --save-dev

config loaders

// config/webpack.config.js

module.exports = {
  module: {
    loaders: [
      // style & css & less loader
      { test: /\.css$/, loader: "style-loader!css-loader"},
      { test: /\.less$/, loader: "style-loader!css-loader!less-loader")},
      // babel loader
      {
        test: /\.jsx?$/,
        exclude: /(node_modules|bower_components)/,
        loader: ['babel-loader'],
        query: {
          presets: ['es2015']
          // 如果安裝了React的話
          // presets: ['react', 'es2015']
        }
      },
      // image & font
      { test: /\.(woff|woff2|eot|ttf|otf)$/i, loader: 'url-loader?limit=8192&name=[name].[ext]'},
      { test: /\.(jpe?g|png|gif|svg)$/i, loader: 'url-loader?limit=8192&name=[name].[ext]'},
    ]
  }
}

plugin

//ExtractTextPlugin分離CSS
# install ExtractTextPlugin
$ npm install extract-text-webpack-plugin --save-dev
// config/webpack.config.js

const ExtractTextPlugin = require("extract-text-webpack-plugin");

module: {
  loaders: [
    // 把之前的style&css&less loader改為
    { test: /\.css$/, loader: ExtractTextPlugin.extract('style-loader', 'css-loader')},
    { test: /\.less$/, loader: ExtractTextPlugin.extract('style', 'css!less') },
  ]
},
plugins: [
  // 分離css
  new ExtractTextPlugin('[name].bundle.css', {
    allChunks: true
  }),
]

設(shè)置jQuery全局變量

$ npm install jquery --save-dev

# 安裝 expose-loader
$ sudo npm install expose-loader --save
// config/webpack.config.js

module: {
  loaders: [
    // expose-loader將需要的變量從依賴包中暴露出來(lái)
    { test: require.resolve("jquery"), loader: "expose?$! expose?jQuery" }
  ]
},
plugins: [
  // 把jquery作為全局變量插入到所有的代碼中
  // 然后就可以直接在頁(yè)面中使用jQuery了
  new webpack.ProvidePlugin({
    $: 'jquery',
    jQuery: 'jquery',
    'window.jQuery': 'jquery'
  }),
]

CommonsChunkPlugin抽取公共資源

// config/webpack.config.js

entry: {
  jquery: ['jquery']
},
plugins: [
  // public sources
  new webpack.optimize.CommonsChunkPlugin({
    // 與 entry 中的 jquery 對(duì)應(yīng)
    name: 'jquery',
    // 輸出的公共資源名稱
    filename: 'common.bundle.js',
    // 對(duì)所有entry實(shí)行這個(gè)規(guī)則
    minChunks: Infinity
  }),
]

UglifyJsPlugin代碼壓縮混淆

// config/webpack.config.js

plugins: [
  new webpack.optimize.UglifyJsPlugin({
    mangle: {
      except: ['$super', '$', 'exports', 'require']
      //以上變量‘$super’, ‘$’, ‘exports’ or ‘require’眼坏，不會(huì)被混淆
    },
    compress: {
      warnings: false
    }
  })
]