插件的特色
是一个独立的模块javascript
模块对外暴露一个js 函数css
函数的原型（原型）上定义了一个注入编译对象的适用方法适用 函数中须要有经过编译对象挂载的 的WebPack 事件钩子，钩子的回调中能拿到当前编译的编译对象，若是是异步编译插件的话能够拿到些回调html
完成自定义子编译流程并处理complition对象的内部数据前端
若是异步编译插件的话，数据处理完成后执行callback。vue
一、HotModuleReplacementPlugin
const webpack = require('webpack')
plugins: [ new webpack.HotModuleReplacementPlugin(), // 热更新插件]
二、html -webpack-plugin
const htmlWebpackPlugin = require('html-webpack-plugin')
plugins: [ newhtmlWebpackPlugin({ filename: 'index.html', template: path.join(__dirname, '/index.html'), minify: { // 压缩html文件 removeComments: true, // 移除html中的注释 collapseWhitespace: true, // 删除空白符与换行符 minifycss: true, // 压缩内联css }, inject: true, }),]
true：默认值，script标签位于html文件的body底部java
body：script标签置于html文件的body底部（同true）node
head：script标签放在head标签内react
false：不插入生成的js文件，只是单纯的生成一个html文件jquery
const path = require('path')const HtmlWebpackPlugin = require('html-webpack-plugin')module.exports = { entry: { index: './src/index.js', login: './src/login.js', }, output: { path: path.resolve(__dirname, 'dist'), filename: '[name].[hash:6].js', }, //... plugins: [ new HtmlWebpackPlugin({ template: './public/index.html', filename: 'index.html', //打包后的文件名 }), new HtmlWebpackPlugin({ template: './public/login.html', filename: 'login.html', //打包后的文件名 }), ],}
module.exports = { //... plugins: [ new HtmlWebpackPlugin({ template: './public/index.html', filename: 'index.html', //打包后的文件名 chunks: ['index'], }), new HtmlWebpackPlugin({ template: './public/login.html', filename: 'login.html', //打包后的文件名 chunks: ['login'], }), ],}
三、clean-webpack-plugin
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
plugins: [ new HtmlWebpackPlugin({ template: path.join(__dirname, '/index.html'), }), new CleanWebpackPlugin(), // 所要清理的文件夹名称]
四、提取文本Webpack插件
const ExtractTextPlugin = require('extract-text-webpack-plugin')
plugins: [ // 将css分离到/dist文件夹下的css文件夹中的index.css new ExtractTextPlugin('css/index.css'),]
五、迷你CSS提取插件
初步加载webpack
不重复编译，性能更好
更容易使用
只针对CSS
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
module.exports = { module: { rules: [ { test: /\.(le|c)ss$/, use: [ { loader: MiniCssExtractPlugin.loader, options: { publicPath: '../', }, }, 'css-loader', 'postcss-loader', 'less-loader', ], }, ], }, plugins: [ new MiniCssExtractPlugin({ filename: 'css/[name].[contenthash:8].css', chunkFilename: 'css/[id].[contenthash:8].css', }), ],}
六、purifycss-webpack
const path = require('path')const PurifyCssWebpack = require('purifycss-webpack') // 引入PurifyCssWebpack插件const glob = require('glob') // 引入glob模块,用于扫描所有html文件中所引用的css
module.exports = merge(common, { plugins: [ new PurifyCssWebpack({ paths: glob.sync(path.join(__dirname, 'src/*.html')), }), ],})
七、优化CSS资产Webpack插件
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin") // 压缩css代码
optimization: { minimizer: [ // 压缩css new OptimizeCSSAssetsPlugin({}) ] }
八、UglifyJsPlugin
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
plugins: [ new UglifyJsPlugin({ uglifyOptions: { compress: { warnings: false } }, sourceMap: true, //是否启用文件缓存 parallel: true //使用多进程并行运行来提升构建速度 })
九、ParallelUglifyPlugin
const ParallelUglifyPlugin = require('webpack-parallel-uglify-plugin')
plugins: [ new ParallelUglifyPlugin({ //cacheDir 用于配置缓存存放的目录路径。 cacheDir: '.cache/', sourceMap: true, uglifyJS: { output: { comments: false, }, compress: { warnings: false, }, }, }),]
十、terser-webpack-plugin
const TerserPlugin = require('terser-webpack-plugin') // 压缩js代码
optimization: { minimizer: [ new TerserPlugin({ parallel: 4, // 开启几个进程来处理压缩，默认是 os.cpus().length - 1 cache: true, // 是否缓存 sourceMap: false, }), ]}
十一、NoErrorsPlugin
plugins: [new webpack.NoEmitOnErrorsPlugin()]
十二、压缩webpack插件
const CompressionPlugin = require('compression-webpack-plugin')
plugins: [ new CompressionPlugin({ // gzip压缩配置 test: /\.js$|\.html$|\.css/, // 匹配文件名 threshold: 10240, // 对超过10kb的数据进行压缩 deleteOriginalAssets: false, // 是否删除原文件 }),]
1三、定义插件
plugins: [ new webpack.DefinePlugin({ DESCRIPTION: 'This Is The Test Text.', }),]
// 直接引用console.log(DESCRIPTION)
1四、ProvidePlugin
module.exports = { resolve: { alias: { jquery: './lib/jquery', }, }, plugins: [ //提供全局的变量，在模块中使用无需用require引入 new webpack.ProvidePlugin({ $: 'jquery',react: 'react', }), ],}
1五、DLL插件
const path = require('path')const webpack = require('webpack')module.exports = { entry: { vendor: [ 'vue-router', 'vuex', 'vue/dist/vue.common.js', 'vue/dist/vue.js', 'vue-loader/lib/component-normalizer.js', 'vue', 'axios', 'echarts', ], }, output: { path: path.resolve('./dist'), filename: '[name].dll.js', library: '[name]_library', }, plugins: [ new webpack.DllPlugin({ path: path.resolve('./dist', '[name]-manifest.json'), name: '[name]_library', }), // 建议加上代码压缩插件，不然dll包会比较大。 new webpack.optimize.UglifyJsPlugin({ compress: { warnings: false, }, }), ],}
new webpack.DllReferencePlugin({ manifest: require('../dist/vendor-manifest.json'),})
"scripts": { "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js", "start": "npm run dev", "lint": "eslint --ext .js,.vue src", "build": "node build/build.js", "build:dll": "webpack --config build/webpack.dll.conf.js" }
<script type="text/JavaScript" src="./vendor.dll.js"></script>
1六、快乐包
npm i -D happypack
module: { rules: [ { test: /\.js$/, use: ['happypack/loader?id=babel'], include: [resolve('src'), resolve('test')], exclude: path.resolve(__dirname, 'node_modules'), }, { test: /\.vue$/, use: ['happypack/loader?id=vue'], }, ]}
const HappyPack = require('happypack')// 构造出共享进程池，在进程池中包含5个子进程const HappyPackThreadPool = HappyPack.ThreadPool({ size: 5 })plugins: [ new HappyPack({ // 用惟一的标识符id，来表明当前的HappyPack是用来处理一类特定的文件 id: 'babel', // 如何处理.js文件，用法和Loader配置中同样 loaders: ['babel-loader?cacheDirectory'], threadPool: HappyPackThreadPool, }), new HappyPack({ id: 'vue', // 用惟一的标识符id，来表明当前的HappyPack是用来处理一类特定的文件 loaders: [ { loader: 'vue-loader', options: vueLoaderConfig, }, ], threadPool: HappyPackThreadPool, }),]
1七、复制webpack插件
const CopyWebpackPlugin = require('copy-webpack-plugin')module.exports = { plugins: [ new CopyWebpackPlugin({ patterns: [ { from: 'public/js/*.js', to: path.resolve(__dirname, 'dist', 'js'), flatten: true, }, ], }), ],}
1八、忽略插件
const Webpack = require('webpack')plugins: [ //moment这个库中，若是引用了./locale/目录的内容，就忽略掉，不会打包进去 new Webpack.IgnorePlugin(/\.\/locale/, /moment/),]
import moment from 'moment'
//手动引入所须要的语言包import 'moment/locale/zh-cn'
moment.locale('zh-cn')
let r = moment().endOf('day').fromNow()console.log(r)
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