vue-cli4打包优化
productionSourceMap: false,
去除map文件
assetsDir: 'static',
把静态文件统一放在static文件夹下
cnpm install uglifyjs-webpack-plugin --save-dev
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
const isProduction = process.env.NODE_ENV === 'production';
configureWebpack: config => {
const plugins = [];
if (isProduction) {
plugins.push(
new UglifyJsPlugin({
uglifyOptions: {
output: {
comments: false, // 去掉注释
},
warnings: false,
compress: {
drop_console: true,
drop_debugger: false,
pure_funcs: ['console.log']//移除console
}
}
})
)
}
},
去除console.log打印以及注释
vue.config.js完整配置
const path = require('path');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin') // 去掉注释
const CompressionWebpackPlugin = require('compression-webpack-plugin'); // 开启压缩
const { HashedModuleIdsPlugin } = require('webpack');
function resolve(dir) {
return path.join(__dirname, dir)
}
const isProduction = process.env.NODE_ENV === 'production';
// cdn预加载使用
const externals = {
'vue': 'Vue',
'vue-router': 'VueRouter',
'vuex': 'Vuex',
'axios': 'axios',
"element-ui": "ELEMENT"
}
const cdn = {
// 开发环境
dev: {
css: [
'https://unpkg.com/element-ui/lib/theme-chalk/index.css'
],
js: []
},
// 生产环境
build: {
css: [
'https://unpkg.com/element-ui/lib/theme-chalk/index.css'
],
js: [
'https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.min.js',
'https://cdn.jsdelivr.net/npm/vue-router@3.0.1/dist/vue-router.min.js',
'https://cdn.jsdelivr.net/npm/vuex@3.0.1/dist/vuex.min.js',
'https://cdn.jsdelivr.net/npm/axios@0.18.0/dist/axios.min.js',
'https://unpkg.com/element-ui/lib/index.js'
]
}
}
module.exports = {
lintOnSave: false, // 关闭eslint
productionSourceMap: false,
publicPath: './',
outputDir: process.env.outputDir, // 生成文件的目录名称
chainWebpack: config => {
config.resolve.alias
.set('@', resolve('src'))
// 压缩图片
config.module
.rule('images')
.test(/\.(png|jpe?g|gif|svg)(\?.*)?$/)
.use('image-webpack-loader')
.loader('image-webpack-loader')
.options({ bypassOnDebug: true })
// webpack 会默认给commonChunk打进chunk-vendors，所以需要对webpack的配置进行delete
config.optimization.delete('splitChunks')
config.plugin('html').tap(args => {
if (process.env.NODE_ENV === 'production') {
args[0].cdn = cdn.build
}
if (process.env.NODE_ENV === 'development') {
args[0].cdn = cdn.dev
}
return args
})
config
.plugin('webpack-bundle-analyzer')
.use(require('webpack-bundle-analyzer').BundleAnalyzerPlugin)
},
configureWebpack: config => {
const plugins = [];
if (isProduction) {
plugins.push(
new UglifyJsPlugin({
uglifyOptions: {
output: {
comments: false, // 去掉注释
},
warnings: false,
compress: {
drop_console: true,
drop_debugger: false,
pure_funcs: ['console.log']//移除console
}
}
})
)
// 服务器也要相应开启gzip
plugins.push(
new CompressionWebpackPlugin({
algorithm: 'gzip',
test: /\.(js|css)$/,// 匹配文件名
threshold: 10000, // 对超过10k的数据压缩
deleteOriginalAssets: false, // 不删除源文件
minRatio: 0.8 // 压缩比
})
)
// 用于根据模块的相对路径生成 hash 作为模块 id, 一般用于生产环境
plugins.push(
new HashedModuleIdsPlugin()
)
// 开启分离js
config.optimization = {
runtimeChunk: 'single',
splitChunks: {
chunks: 'all',
maxInitialRequests: Infinity,
minSize: 1000 * 60,
cacheGroups: {
vendor: {
test: /[\\/]node_modules[\\/]/,
name(module) {
// 排除node_modules 然后吧 @ 替换为空 ,考虑到服务器的兼容
const packageName = module.context.match(/[\\/]node_modules[\\/](.*?)([\\/]|$)/)[1]
return `npm.${packageName.replace('@', '')}`
}
}
}
}
};
// 取消webpack警告的性能提示
config.performance = {
hints: 'warning',
//入口起点的最大体积
maxEntrypointSize: 1000 * 500,
//生成文件的最大体积
maxAssetSize: 1000 * 1000,
//只给出 js 文件的性能提示
assetFilter: function (assetFilename) {
return assetFilename.endsWith('.js');
}
}
// 打包时npm包转CDN
config.externals = externals;
}
return { plugins }
},
pluginOptions: {
// 配置全局less
'style-resources-loader': {
preProcessor: 'less',
patterns: [resolve('./src/style/theme.less')]
}
},
devServer: {
open: false, // 自动启动浏览器
host: '0.0.0.0', // localhost
port: 6060, // 端口号
https: false,
hotOnly: false, // 热更新
proxy: {
'^/sso': {
target: process.env.VUE_APP_SSO, // 重写路径
ws: true, //开启WebSocket
secure: false, // 如果是https接口，需要配置这个参数
changeOrigin: true
}
}
}
}
