websocket4.0+typescript 实现热更新的方法
作者：裴东来
这篇文章主要介绍了websocket4.0+typescript 实现热更新的方法,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧
最近搞了一个webpack4+typescript的开发环境，折腾了很久现在记录一下。。。。
本身环境比较好搞，但是热更新是个麻烦事儿
本环境是基于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是必须的字段，不添加HRM就没有效果
在热更新的时候会出现很多hot-update.js和hot-update.json的细碎文件
使用hotUpdateChunkFilename和hotUpdateMainFilename指定他们只生成一个文件，目前没有找到不生成这两个文件的办法，如果哪位大佬知道的话请告知。
plugins: [
new HtmlWebpackPlugin({
title: '模块热替换',
template: './public/index.html'
}),
new webpack.HotModuleReplacementPlugin(),
// 启动输出清理
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是热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'
最坑的地方来了，我一开始是加上可hot和hotOnly字段的，但是不管是两个都加还是单独使用任何一个，HRM都没有效果。。。。
最后发现两个都不实用就可以。。。。。妈耶，我还是从官网看的这个配置。
到现在也不是很了解是怎么回事。。
最后，贴一下完整的配置吧
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 = 8080
const HTTPS = false
module.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: '模块热替换',
template: './public/index.html'
}),
new webpack.HotModuleReplacementPlugin(),
// 启动输出清理
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'
}
}
package.json
{
"name": "ljax",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"watch": "webpack -w",
"dev-server": "webpack-dev-server",
"serve": "start yarn dev-server && yarn watch"
},
"author": "",
"license": "ISC",
"dependencies": {
"friendly-errors-webpack-plugin": "^1.7.0",
"html-webpack-plugin": "^3.2.0",
"ts-loader": "^6.0.4",
"typescript": "^3.5.3",
"webpack": "^4.39.1",
"webpack-dev-server": "^3.7.2"
},
"devDependencies": {
"webpack-cli": "^3.3.6"
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。