Home >Web Front-end >JS Tutorial >How to use webpack+react+antd scaffolding in actual projects
This time I will show you how to use webpack react antd scaffolding in actual projects, and what are the precautions for using webpack react antd scaffolding in actual projects. The following is a practical case, let's take a look.
Optimization category
Style separation
Separation of third-party resources
Differentiate development environment
Hot update
1. CSS separation
npm install extract-text-webpack-plugin -Dwebpack.config.jsSeparate css, less, and sass files from the packaged file
+ let cssExtract = new ExtractTextWebpackPlugin({ + filename: 'css.css', + allChunks: true + }); + let sassExtract = new ExtractTextWebpackPlugin('sass.css') + let lessExtract = new ExtractTextWebpackPlugin('less.css')Add separate rules in webpack.config.js,
{ test: /\.css$/, use: cssExtract.extract({ fallback: "style-loader", use: ['css-loader?minimize','postcss-loader'], publicPath: "/dist" }), include:path.join(__dirname,'./src'), exclude:/node_modules/ }, { test: /\.scss$/, use: sassExtract.extract({ fallback: "style-loader", use: ["css-loader?minimize","sass-loader"], publicPath: "/dist" }), include:path.join(__dirname,'./src'), exclude:/node_modules/ }, { test: /\.less$/, loader: lessExtract.extract({ use: ["css-loader?minimize", "less-loader"] }), include:path.join(__dirname,'./src'), exclude:/node_modules/ },
compilation.mainTemplate.applyPluginsWaterfall is not a functionUse Chunks.groupsIterable and filter by instanceof Entrypoint insteadThe research concluded that the reason why webpack was upgraded to v4 but the corresponding plug-in was not upgraded. Solution: Install the specified version of dependencies
"html-webpack-plugin": "^3.0.4" "extract-text-webpack-plugin": "^4.0.0-beta.0"
resolve
After specifying the extension, you don’t need to add the file extension when requiring or importing , will try to add extensions in order to matchresolve: { //引入模块的时候,可以不用扩展名 extensions: [".js", ".less", ".json"], alias: {//别名 "bootstrap": "bootstrap/dist/css/bootstrap.css" } }
Listen to file modification
Used in webpack mode, not used in webpack-dev-server mode, you can change watch to falsewatchOptions: { ignored: /node_modules/, aggregateTimeout: 300, //监听到变化发生后等300ms再去执行动作,防止文件更新太快导致编译频率太高 poll: 1000 //通过不停的询问文件是否改变来判断文件是否发生变化,默认每秒询问1000次 }
Extract public code
optimization: { splitChunks: { cacheGroups: { commons: { chunks: "initial", minChunks: 2, maxInitialRequests: 5, // The default limit is too small to showcase the effect minSize: 0 // This is example is too small to create commons chunks }, vendor: { test: /node_modules/, chunks: "initial", name: "vendor", priority: 10, enforce: true } } } }
Separate react react-dom ant public code
Method 1: externalsIntroduce a third-party resource library to the page, and then use externals to prevent certain imported packages from being packaged into the bundle. Instead, obtain these external dependencies at runtime (runtime). .
<script src="https://cdn.bootcss.com/react/16.4.0-alpha.0911da3/cjs/react.production.min.js"></script> <script src="https://cdn.bootcss.com/react-dom/16.4.0-alpha.0911da3/cjs/react-dom-server.browser.production.min.js"></script> externals: { 'react': 'React', 'react-dom': 'ReactDOM', // 提出ant design的公共资源, }Method 2: DLLDLL was written in the previous article, but it kept appearing after packaging. I later found out that it was There are no resources introduced on the page. . . . (I always thought webpack would automatically generate it on the page....) Introduced
<script src="./vendor/react.dll.js"></script>into the index.html file and the separation was successful! Up codewebpack.base.js
var path = require('path'); var webpack = require('webpack'); var ExtractTextWebpackPlugin = require("extract-text-webpack-plugin"); const HtmlWebpackPlugin = require("html-webpack-plugin"); const CleanWebpackPlugin = require('clean-webpack-plugin'); const CopyWebpackPlugin = require('copy-webpack-plugin') let cssExtract = new ExtractTextWebpackPlugin({ filename: 'css.css', allChunks: true }); let sassExtract = new ExtractTextWebpackPlugin('sass.css') let lessExtract = new ExtractTextWebpackPlugin('less.css') module.exports = { entry:'./src/index.js', output: { path: path.resolve(__dirname, './dist'), filename: 'bundle.[hash:8].js', publicPath: '' }, resolve: { //引入模块的时候,可以不用扩展名 extensions: [".js", ".less", ".json"], alias: {//别名 "bootstrap": "bootstrap/dist/css/bootstrap.css" }, modules: [path.resolve(__dirname, 'node_modules')] }, /* externals: { 'react': 'React', 'react-dom': 'ReactDOM', // 提出ant design的公共资源 //'antd': 'antd', },*/ devtool: 'source-map', devServer: { contentBase:path.resolve(__dirname,'dist'), publicPath: '/', port: 8080, hot:true, compress:true, historyApiFallback: true, inline: true }, watch: false, //只有在开启监听模式时,watchOptions才有意义 watchOptions: { ignored: /node_modules/, aggregateTimeout: 300, //监听到变化发生后等300ms再去执行动作,防止文件更新太快导致编译频率太高 poll: 1000 //通过不停的询问文件是否改变来判断文件是否发生变化,默认每秒询问1000次 }, optimization: { splitChunks: { cacheGroups: { commons: { chunks: "initial", minChunks: 2, maxInitialRequests: 5, // The default limit is too small to showcase the effect minSize: 0 // This is example is too small to create commons chunks }, vendor: { test: /node_modules/, chunks: "initial", name: "vendor", priority: 10, enforce: true } } } }, module: { rules:[ { test: /\.js$/, use: { loader:'babel-loader', options: { presets: ['env','es2015', 'react'], } }, include:path.join(__dirname,'./src'), exclude:/node_modules/ }, { test: /\.css$/, use: cssExtract.extract({ fallback: "style-loader", use: ['css-loader?minimize','postcss-loader'], publicPath: "/dist" }), include:path.join(__dirname,'./src'), exclude:/node_modules/ }, { test: /\.scss$/, use: sassExtract.extract({ fallback: "style-loader", use: ["css-loader?minimize","sass-loader"], publicPath: "/dist" }), include:path.join(__dirname,'./src'), exclude:/node_modules/ }, { test: /\.less$/, loader: lessExtract.extract({ use: ["css-loader?minimize", "less-loader"] }), include:path.join(__dirname,'./src'), exclude:/node_modules/ }, { test: /\.(html|htm)/, use: 'html-withimg-loader' }, { test: /\.(png|jpg|gif|svg|bmp|eot|woff|woff2|ttf)/, use: { loader:'url-loader', options:{ limit: 5 * 1024, //指定拷贝文件的输出目录 outputPath: 'images/' } } } ] }, plugins: [ //定义环境变量 new webpack.DefinePlugin({ __development__: JSON.stringify(process.env.NODE_ENV) }), new CleanWebpackPlugin(['dist']), cssExtract, lessExtract, sassExtract, new HtmlWebpackPlugin({ title: 'React Biolerplate by YuanYuan', template: './src/index.html', filename: `index.html`, hash: true }), new webpack.DllReferencePlugin({ manifest: path.join(__dirname, 'vendor', 'react.manifest.json') }), new CopyWebpackPlugin([{ from: path.join(__dirname,'vendor'),//静态资源目录源地址 to:'./vendor' //目标地址,相对于output的path目录 }]), /* new webpack.optimize.CommonsChunkPlugin({ name: 'common' // 指定公共 bundle 的名称。 + })*/ new webpack.HotModuleReplacementPlugin(), // 热替换插件 new webpack.NamedModulesPlugin() // 执行热替换时打印模块名字 ] };webpack.config.js
const path = require('path'); const webpack = require('webpack'); const merge = require('webpack-merge');//用来合并配置文件 const base = require('./webpack.base'); let other = ''; //console.log(process.env.NODE_ENV ) if (process.env.NODE_ENV == 'development') { other = require('./webpack.dev.config'); } else { other = require('./webpack.prod.config'); } //console.log(merge(base, other)); module.exports = merge(base, other); webpack.prod.config.js const path = require('path'); const webpack = require('webpack'); const UglifyJSPlugin = require('uglifyjs-webpack-plugin') module.exports = { output: { filename: 'bundle.min.js', }, plugins: [ new UglifyJSPlugin({sourceMap: true}) ] }Original scaffolding address The optimized scaffold address The packaging speed is optimized, the packaging file is refined, and the transformation is successful~I believe you have mastered the method after reading the case in this article, and more How exciting, please pay attention to other related articles on php Chinese website! Recommended reading:
How to use vue slot socket in the project
What are the precautions for using Dom with Angular2
The above is the detailed content of How to use webpack+react+antd scaffolding in actual projects. For more information, please follow other related articles on the PHP Chinese website!