1.摇树优化

勾选摇树优化,打包删除死代码

2.gzip压缩和删除console.log

安装插件webpack和compression-webpack-plugin
webpack插件

npm install webpack@4.46.0 --save-dev

 compression-webpack-plugin插件

npm install compression-webpack-plugin@6.1.1 --save-dev

const CompressionWebpackPlugin = require('compression-webpack-plugin');module.exports = {productionSourceMap: false, // 生产打包时不输出map文件，增加打包速度configureWebpack: {plugins: [new CompressionWebpackPlugin({filename: "[path][base].gz",algorithm: "gzip",test: /\.js$|\.html$|\.css$/,threshold: 10240,minRatio: 0.8,exclude: /node_modules/,}),]},configureWebpack: config => {config.optimization.minimizer[0].options.terserOptions.compress.warnings = false;config.optimization.minimizer[0].options.terserOptions.compress.drop_console = true;config.optimization.minimizer[0].options.terserOptions.compress.drop_debugger = true;config.optimization.minimizer[0].options.terserOptions.compress.pure_funcs = ['console.log'];}
}