摘要：
背景：19年的新vue项目使用webpack3。随着项目的积累，组件的增加导致本地建设、在线打包和其他操作极其缓慢，这极大地影响了开发效率和部署效率。基于这个问题，这次对webpacks和相关插件进行了优化和升级。本博客分为两部分。第一部分将直接附加可执行代码，可直接粘贴和复制以供使用。第二部分还将描述相关的修改和遇到的陷阱。
背景
19年新建的vue项目，使用的是webpack3，随着项目的积累，组件的增多导致本地构建，线上打包等操作速度极慢，非常影响开发效率和部署效率，基于此问题，本次对webpack及相关插件进行了优化和升级。本博文分为2篇，第 1 篇 会直接附上可运行的代码（去除了一些业务代码配置），直接粘贴复制即可使用（注意是基于vue2.0项目原配置基础上的修改哦，在网上找了一堆都是升级过程的各种坑说明，不如直接粘贴复制运行来的爽丫~~~），第 2 篇也会对相关的修改和遇到的坑进行描述说明。
升级效果
1、本地构建
第一次构建 5分钟 缩短至 1.5分钟左右， 构建时间提升近 4 倍；
更新构建 由 5-10s 缩短至 1-5s ，构建提升 2 倍；
2、线上打包
执行npm run build 由10-15分钟 缩短至 3-5分钟，构建时间提升近4倍；
升级过程
1. 更新webpack依赖
yarn upgrade webpack@5.37.0
yarn add webpack-dev-server webpack-cli -D
更新其他相关的组件，这里不需要一个个找了，可以使用npm-check-updates一键升级所需的组件，不再赘述怎么用的了，百度一下，你就知道，实在不会就一个个install吧~
2. package.json启动命令修改
"scripts": {
"dev": "npx webpack serve --config build/webpack.dev.conf.js --color --progress",
"build": "node build/build.js",
"dll": "npx webpack --config build/webpack.dll.conf.js",
"start": "npm run dev"
}
3、webpack.base.conf.js配置修改
'use strict'
const path = require('path')
const utils = require('./utils')
const config = require('../config')
const webpack = require('webpack')
const vueLoaderConfig = require('./vue-loader.conf')
const { VueLoaderPlugin } = require('vue-loader');
function resolve (dir) {
return path.join(__dirname, '..', dir)
}
module.exports = {
context: path.resolve(__dirname, '../'),
entry: {
app: './src/main.ts'
},
output: {
path: config.build.assetsRoot,
filename: '[name].js',
publicPath: process.env.NODE_ENV === 'production' ? config.build.assetsPublicPath : config.dev.assetsPublicPath
},
resolve: {
extensions: ['.js', '.vue', '.json', '.ts'],
alias: {
vue$: 'vue/dist/vue.esm.js',
'@': resolve('src'),
pages: resolve('src/pages')
}
},
module: {
rules: [
{
test: /.vue$/,
use: {
loader: 'vue-loader'
}
},
{
test: /.tsx?$/,
exclude: resolve('node_modules'),
use: [
{
loader: 'babel-loader'
},
{
loader: "ts-loader",
options: { appendTsxSuffixTo: [/.vue$/], transpileOnly: true }
}
]
},
{
test: /.js$/,
use: {
loader: 'babel-loader'
},
exclude: resolve('node_modules'),
include: resolve('src')
},
{
test: /.(png|jpe?g|gif|svg)(?.*)?$/,
type: 'asset',
parser: {
dataUrlCondition: {
maxSize: 10 * 1024 // 10kb
}
},
generator: {
filename: utils.assetsPath('img/[name].[hash:7].[ext]')
}
}
]
},
node: {
global: false
},
plugins: [
new VueLoaderPlugin(),
new webpack.ProvidePlugin({
jQuery: 'jquery',
$: 'jquery'
}),
new webpack.DllReferencePlugin({
context: __dirname,
manifest: path.resolve(__dirname, './vendors.manifest.json')
})
]
}
4、webpack.dev.conf.js配置修改
'use strict'
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const { merge } = require('webpack-merge')
const path = require('path')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
const portfinder = require('portfinder')
const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)
const devWebpackConfig = merge(baseWebpackConfig, {
mode: 'development',
module: {
rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap, usePostCSS: true })
},
devtool: config.dev.devtool,
devServer: {
clientLogLevel: 'warning',
historyApiFallback: {
rewrites: [
{ from: /.*/, to: path.posix.join(config.dev.assetsPublicPath, 'index.html') },
],
},
hot: true,
contentBase: false,
compress: true,
host: HOST || config.dev.host,
port: PORT || config.dev.port,
open: config.dev.autoOpenBrowser,
overlay: config.dev.errorOverlay ? { warnings: false, errors: true } : false,
publicPath: config.dev.assetsPublicPath,
proxy: config.dev.proxyTable,
quiet: true,
watchOptions: {
poll: config.dev.poll,
}
},
plugins: [
new webpack.DefinePlugin({
'process.env': require('../config/dev.env')
}),
new webpack.HotModuleReplacementPlugin(),
new HtmlWebpackPlugin({
filename: 'index.html',
template: 'index.html',
inject: 'body',
scriptLoading: 'blocking',
minify: {
removeComments: true
}
}),
new CopyWebpackPlugin({
patterns: [
{
from: path.resolve(__dirname, '../static'),
to: config.dev.assetsSubDirectory,
globOptions: {
dot: true,
gitignore: true,
ignore: ['.*'],
}
},
]
})
]
})
module.exports = new Promise((resolve, reject) => {
portfinder.basePort = process.env.PORT || config.dev.port
portfinder.getPort((err, port) => {
if (err) {
reject(err)
} else {
process.env.PORT = port
devWebpackConfig.devServer.port = port
// Add FriendlyErrorsPlugin
devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
compilationSuccessInfo: {
messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
},
onErrors: config.dev.notifyOnErrors ? utils.createNotifierCallback() : undefined
}))
resolve(devWebpackConfig)
}
})
})
5、webpack.prod.conf.js配置修改
'use strict'
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const { merge } = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin');
const TerserWebpackPlugin = require('terser-webpack-plugin');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const env = require('../config/prod.env')
const webpackConfig = merge(baseWebpackConfig, {
mode: "production",
module: {
rules: utils.styleLoaders({
sourceMap: false,
extract: true,
usePostCSS: true
})
},
devtool: config.build.devtool,
output: {
path: config.build.assetsRoot,
filename: utils.assetsPath('js/[name].[chunkhash].js'),
chunkFilename: utils.assetsPath('js/[id].[chunkhash].js'),
clean: true
},
optimization: {
minimize: true,
minimizer: [
new TerserWebpackPlugin(),
new OptimizeCSSPlugin(),
],
runtimeChunk: { name: 'runtime' },
concatenateModules: true,
splitChunks: {
cacheGroups: {
vendor: {
test: /[\/]node_modules[\/]/,
name: 'vendor',
chunks: 'all',
priority: -10
},
'async-vendors': {
test: /[\/]node_modules[\/]/,
minChunks: 2,
chunks: 'async',
name: 'async-vendors'
}
},
},
moduleIds: 'deterministic'
},
plugins: [
new webpack.DefinePlugin({
'process.env': env
}),
new MiniCssExtractPlugin({
filename: utils.assetsPath('css/[name].[contenthash].css'),
chunkFilename: utils.assetsPath('css/[name].[contenthash].css')
}),
new HtmlWebpackPlugin({
filename: config.build.index,
template: 'index.html',
inject: true,
scriptLoading: 'blocking',
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
},
chunksSortMode: 'auto'
}),
new CopyWebpackPlugin({
patterns: [
{
from: path.resolve(__dirname, '../static'),
to: config.build.assetsSubDirectory,
globOptions: {
dot: true,
gitignore: true,
ignore: ['.*'],
}
},
]
})
]
})
if (config.build.productionGzip) {
const CompressionWebpackPlugin = require('compression-webpack-plugin');
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
filename: '[path][base].gz[query]',
algorithm: 'gzip',
test: /.(js|css|json|txt|html|ico|svg)(?.*)?$/i,
threshold: 10240,
minRatio: 0.8,
deleteOriginalAssets: true
})
)
}
if (config.build.bundleAnalyzerReport) {
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
module.exports = webpackConfig
6、utils.js配置修改
'use strict'
const path = require('path')
const config = require('../config')
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const packageConfig = require('../package.json')
exports.assetsPath = function (_path) {
const assetsSubDirectory = process.env.NODE_ENV === 'production' ? config.build.assetsSubDirectory : config.dev.assetsSubDirectory;
return path.posix.join(assetsSubDirectory, _path)
}
exports.cssLoaders = function (options) {
options = options || {}
const cssLoader = {
loader: 'css-loader',
options: {
sourceMap: options.sourceMap
}
}
const postcssLoader = {
loader: 'postcss-loader',
options: {
sourceMap: options.sourceMap
}
}
// generate loader string to be used with extract text plugin
function generateLoaders (loader, loaderOptions) {
const loaders = options.usePostCSS ? [cssLoader, postcssLoader] : [cssLoader]
if (loader) {
loaders.push({
loader: loader + '-loader',
options: Object.assign({}, loaderOptions, {
sourceMap: options.sourceMap
})
})
}
// Extract CSS when that option is specified
// (which is the case during production build)
if (options.extract) {
return [
{
loader: MiniCssExtractPlugin.loader,
}
].concat(loaders)
} else {
return [
{
loader: 'style-loader'
}
].concat(loaders)
}
}
// https://vue-loader.vuejs.org/en/configurations/extract-css.html
return {
css: generateLoaders(),
postcss: generateLoaders(),
less: generateLoaders('less'),
// sass: generateLoaders('sass', { indentedSyntax: true }),
// scss: generateLoaders('sass'),
// stylus: generateLoaders('stylus'),
// styl: generateLoaders('stylus')
}
}
// Generate loaders for standalone style files (outside of .vue)
exports.styleLoaders = function (options) {
const output = []
const loaders = exports.cssLoaders(options)
for (const extension in loaders) {
const loader = loaders[extension];
// console.log("css-loader", loader)
output.push({
test: new RegExp('\.' + extension + '$'),
use: loader
})
}
return output
}
exports.createNotifierCallback = () => {
const notifier = require('node-notifier')
return (severity, errors) => {
if (severity !== 'error') return
const error = errors[0]
const filename = error.file && error.file.split('!').pop()
notifier.notify({
title: packageConfig.name,
message: severity + ': ' + error.name,
subtitle: filename || '',
icon: path.join(__dirname, 'logo.png')
})
}
}
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