vue-cli3推崇零配置，其图形化项目管理也很高大上。
但是vue-cli3推崇零配置的话，导致了跟之前vue-cli2的配置方式都不一样了。
别名设置，sourcemap控制，输入文件位置和输出文件位置和输出的方式，压缩js控制，打包webapck日志分析，externals忽略配置（外部引入），调试的端口配置，proxy接口配置等等的。
有时候还需要我们配置的，因为官方推荐的，并不适用于我们平时的开发所用的。
所以，我的vue.config.js配置是下面这样的。还有一个改hash的配置，暂时还不知道如何配置，以后会解决的，解决的时候顺便更新这里。
资料查询借鉴地址：
https://github.com/staven630/vue-cli3-config（介绍vue.config.js配置方法）
https://github.com/loveRandy/vue-cli3.0-vueadmin（借鉴前辈vue-cli3项目里的vue.config.js配置）也查询了不少github上的相关项目。
const IS_PROD = [‘production‘, ‘prod‘].includes(process.env.NODE_ENV);console.log("process.env.NODE_ENV:" + process.env.NODE_ENV);const UglifyJsPlugin = require(‘uglifyjs-webpack-plugin‘);const BundleAnalyzerPlugin = require(‘webpack-bundle-analyzer‘).BundleAnalyzerPlugin;const path = require(‘path‘)const resolve = dir => path.resolve(__dirname, dir)module.exports = { ???publicPath: ‘./‘, // 默认‘/‘，部署应用包时的基本 URL ???outputDir: ‘dist‘, // ‘dist‘, 生产环境构建文件的目录 ???assetsDir: ‘‘, ?// 相对于outputDir的静态资源(js、css、img、fonts)目录 ???lintOnSave: false, ???runtimeCompiler: true, // 是否使用包含运行时编译器的 Vue 构建版本 ???productionSourceMap: false, ?// 生产环境的 source map ???// CSS 相关选项 ???css: { ???????// 将组件内的 CSS 提取到一个单独的 CSS 文件 (只用在生产环境中) ???????// 也可以是一个传递给 `extract-text-webpack-plugin` 的选项对象 ???????extract: true, ???????// 是否开启 CSS source map？ ???????sourceMap: false, ???????// 为预处理器的 loader 传递自定义选项。比如传递给 ???????// sass-loader 时，使用 `{ sass: { ... } }`。 ???????loaderOptions: {}, ???????// 为所有的 CSS 及其预处理文件开启 CSS Modules。 ???????// 这个选项不会影响 `*.vue` 文件。 ???????modules: false ???}, ???// 在生产环境下为 Babel 和 TypeScript 使用 `thread-loader` ???// 在多核机器下会默认开启。 ???parallel: require(‘os‘).cpus().length > 1, ???pwa: {}, ???chainWebpack: config => { ???????// 修复HMR ???????config.resolve.symlinks(true); ???????//修复 Lazy loading routes Error ???????config.plugin(‘html‘).tap(args => { ???????????args[0].chunksSortMode = ‘none‘; ???????????return args; ???????}); ???????// 添加别名 ???????config.resolve.alias ???????????.set(‘@‘, resolve(‘src‘)) ???????????.set(‘assets‘, resolve(‘src/assets‘)) ???????????.set(‘components‘, resolve(‘src/components‘)) ???????????.set(‘layout‘, resolve(‘src/layout‘)) ???????????.set(‘base‘, resolve(‘src/base‘)) ???????????.set(‘static‘, resolve(‘src/static‘)); ???????//压缩图片 ???????// config.module ???????// ????.rule("images") ???????// ????.use("image-webpack-loader") ???????// ????.loader("image-webpack-loader") ???????// ????.options({ ???????// ????????mozjpeg: {progressive: true, quality: 65}, ???????// ????????optipng: {enabled: false}, ???????// ????????pngquant: {quality: "65-90", speed: 4}, ???????// ????????gifsicle: {interlaced: false}, ???????// ????????webp: {quality: 75} ???????// ????}); ???}, ???configureWebpack: config => { ???????if (IS_PROD) { ???????????const plugins = [] ???????????plugins.push( ???????????????new UglifyJsPlugin({ ???????????????????uglifyOptions: { ???????????????????????compress: { ???????????????????????????warnings: false, ???????????????????????????drop_console: true, ???????????????????????????drop_debugger: false, ???????????????????????????pure_funcs: [‘console.log‘] //移除console ???????????????????????} ???????????????????}, ???????????????????sourceMap: false, ???????????????????parallel: true ???????????????}) ???????????) ???????????plugins.push( ???????????????new CompressionWebpackPlugin({ ???????????????????filename: ‘[path].gz[query]‘, ???????????????????algorithm: ‘gzip‘, ???????????????????test: productionGzipExtensions, ???????????????????threshold: 10240, ???????????????????minRatio: 0.8 ???????????????}) ???????????) ???????????//去掉 console.log ???????????plugins.push( ???????????????new UglifyJsPlugin({ ???????????????????uglifyOptions: { ???????????????????????compress: { ???????????????????????????warnings: true, ???????????????????????????drop_console: true, ???????????????????????????drop_debugger: true, ???????????????????????????pure_funcs: [‘console.log‘]//移除console ???????????????????????} ???????????????????}, ???????????????????sourceMap: false, ???????????????????parallel: true ???????????????}) ???????????); ???????????config.plugins = [...config.plugins, ...plugins] ???????} ???????// 打包分析 ???????if (process.env.IS_ANALYZ) { ???????????config.plugin(‘webpack-report‘) ???????????????.use(BundleAnalyzerPlugin, [{ ???????????????????analyzerMode: ‘static‘, ???????????????}]); ???????} ???????// //配置 externals ???????// //防止将某些 import 的包(package)打包到 bundle 中，而是在运行时(runtime)再去从外部获取这些扩展依赖 ???????// config.externals = { ???????// ????‘vue‘: ‘Vue‘, ???????// ????‘element-ui‘: ‘ELEMENT‘, ???????// ????‘vue-router‘: ‘VueRouter‘, ???????// ????‘vuex‘: ‘Vuex‘, ???????// ????‘axios‘: ‘axios‘ ???????// } ???}, ???devServer: { ???????// overlay: { ???????// ??warnings: true, ???????// ??errors: true ???????// }, ???????open: IS_PROD, ???????host: ‘0.0.0.0‘, ???????port: 8080, ???????https: false, ???????hotOnly: false, ???????proxy: { ???????????‘/api‘: { ???????????????target: process.env.VUE_APP_BASE_API || ‘http://127.0.0.1:8080‘, ???????????????changeOrigin: true ???????????} ???????} ???}};vue-cli3 ?vue.config.js配置
原文地址：https://www.cnblogs.com/huoan/p/10354341.html