最近搞了一個webpack4+typescript的開發(fā)環(huán)境，折騰了很久現(xiàn)在記錄一下。。。。

本身環(huán)境比較好搞，但是熱更新是個麻煩事兒

本環(huán)境是基于webpack-dev-server搭建的

 output: {  publicPath: '/dist',  path: path.resolve(__dirname, 'dist'),  filename: 'ljax.bundle.js',  hotUpdateChunkFilename: 'hot/hot-update.js',  hotUpdateMainFilename: 'hot/hot-update.json' },

publicPath是必須的字段，不添加HRM就沒有效果

在熱更新的時候會出現(xiàn)很多hot-update.js和hot-update.json的細(xì)碎文件

使用hotUpdateChunkFilename和hotUpdateMainFilename指定他們只生成一個文件，目前沒有找到不生成這兩個文件的辦法，如果哪位大佬知道的話請告知。

plugins: [  new HtmlWebpackPlugin({   title: '模塊熱替換',   template: './public/index.html'  }),  new webpack.HotModuleReplacementPlugin(),  // 啟動輸出清理  new FriendlyErrorsWebpackPlugin({   compilationSuccessInfo: {    messages: [`You application is running here ${HTTPS ? 'https' : 'http'}://${HOST}:${PORT}`],    // notes: ['Some additional notes to be displayed upon successful compilation'],    clearConsole: true   },  }) ],

HotModuleReplacementPlugin是熱更新必不可少的插件

 contentBase: __dirname,  quiet: true,  compress: true,  port: PORT,  host: HOST,  https: HTTPS,  // hot: true,  // hotOnly: true,  // inline: true,  open: true,  overlay: true,  openPage: './dist/index.html'

最坑的地方來了，我一開始是加上可hot和hotOnly字段的，但是不管是兩個都加還是單獨使用任何一個，HRM都沒有效果。。。。

最后發(fā)現(xiàn)兩個都不實用就可以。。。。。媽耶，我還是從官網(wǎng)看的這個配置。

到現(xiàn)在也不是很了解是怎么回事。。

最后，貼一下完整的配置吧

webpack.config.js

const path = require('path')const FriendlyErrorsWebpackPlugin = require('friendly-errors-webpack-plugin')const webpack = require('webpack')const HtmlWebpackPlugin = require('html-webpack-plugin')const HOST = 'localhost'const PORT = 8080const HTTPS = falsemodule.exports = { mode: 'development', context: __dirname, entry: {  app: './src/index.ts' }, output: {  publicPath: '/dist',  path: path.resolve(__dirname, 'dist'),  filename: 'ljax.bundle.js',  hotUpdateChunkFilename: 'hot/hot-update.js',  hotUpdateMainFilename: 'hot/hot-update.json' }, module: {  rules: [   { test: //.ts/, use: 'ts-loader', exclude: /node_modules/ }  ] }, resolve: {  extensions: ['.ts', '.js'] }, plugins: [  new HtmlWebpackPlugin({   title: '模塊熱替換',   template: './public/index.html'  }),  new webpack.HotModuleReplacementPlugin(),  // 啟動輸出清理  new FriendlyErrorsWebpackPlugin({   compilationSuccessInfo: {    messages: [`You application is running here ${HTTPS ? 'https' : 'http'}://${HOST}:${PORT}`],    // notes: ['Some additional notes to be displayed upon successful compilation'],    clearConsole: true   },  }) ], devServer: {  contentBase: __dirname,  quiet: true,  compress: true,  port: PORT,  host: HOST,  https: HTTPS,  // hot: true,  // hotOnly: true,  // inline: true,  open: true,  overlay: true,  openPage: './dist/index.html' }}