前端进阶（二）-前端工程化

//全部引入，webpack不能清理
import _ from 'lodash'
import {last} from 'lodash'
//第三种打包体积减少
import last from 'lodash/last';

const {
  SyncHook, //普通同步串行，不关心监听函数的返回值
  SyncBailHook,  //同步串行，只要监听函数的有一个函数的返回值不为null则跳出该循环
  SyncWaterfallHook, //同步串行，上一个监听函数的返回值作为参数传递给下一个监听函数
  SyncLoopHook, //同步串行，如果监听函数返回值则循环执行，直至返回undefined
  AsyncParallelHook, //异步并行，不关心函数返回值
  AsyncParallelBailHook, //异步并行，只要监听函数的有一个函数的返回值不为null则跳出该循环
  AsyncSeriesHook, //异步串行，不关心函数返回值
  AsyncSeriesBailHook, //异步串行，不关心函数返回值
  AsyncSeriesWaterfallHook //异步串行，不关心函数返回值
} = require('tapable')

const {merge} = require('webpack-merge');
const commonConfig = require('./webpack.common');

const prodConfig = {
    mode:'production',
    //可以找出报错代码的源代码路径
    //cheap 只报告行号（不加会报告列）  module 会报告loader及第三方依赖的错误位置
    //加了inline就不产生映射文件了
    //生产环境不需要eval
    devtool:'cheap-module-source-map',
    plugins: [
    ]
}

module.exports = merge(commonConfig,prodConfig);

const Config = require('webpack-chain');

const config = new Config();

config
  // Interact with entry points
  .entry('index')
    .add('src/index.js')
    .end()
  // Modify output settings
  .output
    .path('dist')
    .filename('[name].bundle.js');

// Create named rules which can be modified later
config.module
  .rule('lint')
    .test(/\.js$/)
    .pre()
    .include
      .add('src')
      .end()
    // Even create named uses (loaders)
    .use('eslint')
      .loader('eslint-loader')
      .options({
        rules: {
          semi: 'off'
        }
      });

config.module
  .rule('compile')
    .test(/\.js$/)
    .include
      .add('src')
      .add('test')
      .end()
    .use('babel')
      .loader('babel-loader')
      .options({
        presets: [
          ['@babel/preset-env', { modules: false }]
        ]
      });

// Create named plugins too!
config
  .plugin('clean')
    .use(CleanPlugin, [['dist'], { root: '/dir' }]);

// Export the completed configuration object to be consumed by webpack
module.exports = config.toConfig();

new HtmlWebpackPlugin({
  filename: 'index.html', // 生成文件名
  template: path.join(process.cwd(), './index.html') // 模班文件
})

new CopyWebpackPlugin([
  {
    from: path.join(process.cwd(), './vendor/'),
    to: path.join(process.cwd(), './dist/'),
    ignore: ['*.json']
  }
])

module.exports = {
  plugins: [
    new ManifestPlugin()
  ]
}

module.exports = {
  plugins: [
    new AssetsPlugin()
  ]
}

// 清理目录
const pathsToClean = [
  'dist',
  'build'
]
 
// 清理参数
const cleanOptions = {
  exclude:  ['shared.js'], // 跳过文件
}
module.exports = {
  // ...
  plugins: [
    new CleanWebpackPlugin(pathsToClean, cleanOptions)
  ]
}

module.exports = {
  plugins: [
    new CompressionPlugin()
  ]
}

module.exports = {
  //...
  plugins: [
    new ProgressBarPlugin()
  ]
}

const SpeedMeasurePlugin = require("speed-measure-webpack-plugin");
const smp = new SpeedMeasurePlugin();
module.exports = smp.wrap({
  // ...webpack config...
})

new webpack.ProvidePlugin({
  $: 'jquery',
})

new webpack.DefinePlugin({
  'process.env': {
    NODE_ENV: JSON.stringify(process.env.NODE_ENV)
  }
})

const ExtractTextPlugin = require("extract-text-webpack-plugin");
 
module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ExtractTextPlugin.extract({
          fallback: "style-loader",
          use: "css-loader"
        })
      }
    ]
  },
  plugins: [
    new ExtractTextPlugin("styles.css"),
  ]
}

const MiniCssExtractPlugin = require("mini-css-extract-plugin");
module.exports = {
    module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          {
            loader: MiniCssExtractPlugin.loader,
            options: {
              publicPath: '/'  // chunk publicPath
            }
          },
          "css-loader"
        ]
      }
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "[name].css", // 主文件名
      chunkFilename: "[id].css"  // chunk文件名
    })
  ]
}

new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/)

module.exports = {
  //...
  optimization: {
    minimizer: [new UglifyJsPlugin({
      cache: true,   // 开启缓存
      parallel: true, // 开启多线程编译
      sourceMap: true,  // 是否sourceMap
      uglifyOptions: {  // 丑化参数
        comments: false,
        warnings: false,
        compress: {
          unused: true,
          dead_code: true,
          collapse_vars: true,
          reduce_vars: true
        },
        output: {
          comments: false
        }
      }
    }]
  }
};

module.exports = {
  //...
  optimization: {
    minimizer: [new OptimizeCssAssetsPlugin({
      cssProcessor: require('cssnano'),   // css 压缩优化器
      cssProcessorOptions: { discardComments: { removeAll: true } } // 去除所有注释
    })]
  }
};

var WebpackMd5Hash = require('webpack-md5-hash');
 
module.exports = {
  // ...
  output: {
    //...
    chunkFilename: "[chunkhash].[id].chunk.js"
  },
  plugins: [
    new WebpackMd5Hash()
  ]
};

module.exports = {
  //...
  optimization: {
    splitChunks: {
      chunks: 'async', // 异步加载chunk
      minSize: 30000,
      maxSize: 0,
      minChunks: 1,
      maxAsyncRequests: 5,
      maxInitialRequests: 3,
      automaticNameDelimiter: '~', // 文件名中chunk分隔符
      name: true,
      cacheGroups: {
        vendors: {
          test: /[\\/]node_modules[\\/]/,  // 
          priority: -10
        },
        default: {
          minChunks: 2,  // 最小的共享chunk数
          priority: -20,
          reuseExistingChunk: true
        }
      }
    }
  }
};

const output = {
  filename: '[name].js',
  library: '[name]_library',
  path: './vendor/'
}

module.exports = {
  entry: {
    vendor: ['react', 'react-dom']  // 我们需要事先编译的模块，用entry表示
  },
  output: output,
  plugins: [
    new webpack.DllPlugin({  // 使用dllPlugin
      path: path.join(output.path, `${output.filename}.json`),
      name: output.library // 全局变量名， 也就是 window 下 的 [output.library]
    })
  ]
}

const manifest = path.resolve(process.cwd(), 'vendor', 'vendor.js.json')

module.exports = {
  plugins: [
    new webpack.DllReferencePlugin({
      manifest: require(manifest), // 引进dllPlugin编译的json文件
      name: 'vendor_library' // 全局变量名，与dllPlugin声明的一致
    }
  ]
}

module.exports = {
  plugins: [
    new AutoDllPlugin({
      inject: true, // 与 html-webpack-plugin 结合使用，注入html中
      filename: '[name].js',
      entry: {
        vendor: [
          'react',
          'react-dom'
        ]
      }
    })
  ]
}

const HappyPack = require('happypack');
const os = require('os');
const happyThreadPool = HappyPack.ThreadPool({ size: os.cpus().length });
const happyLoaderId = 'happypack-for-react-babel-loader';

module.exports = {
  module: {
    rules: [{
      test: /\.jsx?$/,
      loader: 'happypack/loader',
      query: {
        id: happyLoaderId
      },
      include: [path.resolve(process.cwd(), 'src')]
    }]
  },
  plugins: [new HappyPack({
    id: happyLoaderId,
    threadPool: happyThreadPool,
    loaders: ['babel-loader']
  })]
}

module.exports = {
  module: {
    rules: [
      {
        test: /\.js$/,
        include: path.resolve("src"),
        use: [
          "thread-loader",
          // your expensive loader (e.g babel-loader)
          "babel-loader"
        ]
      }
    ]
  }
}

module.exports = {
  plugins: [
    new HardSourceWebpackPlugin()
  ]
}

module.exports = {
  module: {
    rules: [
      {
        test: /\.ext$/,
        use: [
          'cache-loader',
          ...loaders
        ],
        include: path.resolve('src')
      }
    ]
  }
}

new BundleAnalyzerPlugin({
  analyzerMode: 'server',
  analyzerHost: '127.0.0.1',
  analyzerPort: 8889,
  reportFilename: 'report.html',
  defaultSizes: 'parsed',
  generateStatsFile: false,
  statsFilename: 'stats.json',
  statsOptions: null,
  logLevel: 'info'
}),

module.exports = {
  plugins: [
    new StatsPlugin('stats.json', {
      chunkModules: true,
      exclude: [/node_modules[\\\/]react/]
    })
  ]
};

module.exports = {
  plugins: [
    new webpack.PrefetchPlugin('/web/', 'app/modules/HeaderNav.jsx'),
    new webpack.PrefetchPlugin('/web/', 'app/pages/FrontPage.jsx')
];
}

const SpeedMeasurePlugin = require("speed-measure-webpack-plugin");
 
const smp = new SpeedMeasurePlugin();
 
const webpackConfig = {
  plugins: [
    new MyPlugin(),
    new MyOtherPlugin()
  ]
}
module.exports = smp.wrap(webpackConfig);

const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');

module.exports = {
    plugins: [
        new webpack.HotModuleReplacementPlugin(),
        new ReactRefreshWebpackPlugin(),
    ]
}

const WebpackAliyunOss = require('webpack-aliyun-oss');
const webpackConfig = {
  // ... 省略其他
  plugins: [new WebpackAliyunOss({
    from: ['./build/**', '!./build/**/*.html'],//排除html文件
    dist: 'path/in/alioss',
    region: 'your region',
    accessKeyId: 'your key',
    accessKeySecret: 'your secret',
    bucket: 'your bucket',
    
    // 如果希望重新组织上传路径，可以传这个函数
    // 否则按构建目录的结构上传
    setOssPath(filePath) {
      // filePath为当前文件路径，函数应该返回路径+文件名，如/new/path/to/file.js，则最终上传路径为 path/in/alioss/new/path/to/file.js
      
      return '/new/path/to/file.js';
    },
    
    // 如果想定义header就传
    setHeaders(filePath) {
      // 定义当前文件header，可选
      return {
        'Cache-Control': 'max-age=31536000'
      }
    }
  })]
}