vue.config.js

'use strict'
const path = require('path')

function resolve(dir) {
    return path.join(__dirname, dir)
}

const apiBaseUrl = 'http://localhost:9291';

const CompressionPlugin = require('compression-webpack-plugin')

const name = process.env.VUE_APP_TITLE || '超市管理系统' // 网页标题

const port = process.env.port || process.env.npm_config_port || 11001 // 端口

// vue.config.js 配置说明
//官方vue.config.js 参考文档 https://cli.vuejs.org/zh/config/#css-loaderoptions
// 这里只列一部分，具体配置参考文档
module.exports = {
    // 部署生产环境和开发环境下的URL。
    // 默认情况下，Vue CLI 会假设你的应用是被部署在一个域名的根路径上
    publicPath: process.env.NODE_ENV === "production" ? "/" : "/",
    // 在npm run build 或 yarn build 时 ，生成文件的目录名称（要和baseUrl的生产环境路径一致）（默认dist）
    outputDir: 'dist',
    // 用于放置生成的静态资源 (js、css、img、fonts) 的；（项目打包之后，静态资源会放在这个文件夹下）
    assetsDir: 'static',
    // 是否开启eslint保存检测，有效值：ture | false | 'error'
    lintOnSave: process.env.NODE_ENV === 'development',
    // 如果你不需要生产环境的 source map，可以将其设置为 false 以加速生产环境构建。
    productionSourceMap: false,
    // webpack-dev-server 相关配置
    devServer: {
        host: '0.0.0.0',
        port: port,
        open: true,
        proxy: {
            [process.env.VUE_APP_BASE_API]: {
              target: process.env.VUE_APP_API_BASE_URL,
              changeOrigin: true,
                pathRewrite: {
                    ['^' + process.env.VUE_APP_BASE_API]: ''
                }
            }
        },
        disableHostCheck: true
    },
    css: {
        loaderOptions: {
            sass: {
                sassOptions: {outputStyle: "expanded"}
            }
        }
    },
    configureWebpack: {
        name: name,
        resolve: {
            alias: {
                '@': resolve('src')
            }
        },
        plugins: [
            new CompressionPlugin({
                cache: false,                   // 不启用文件缓存
                test: /\.(js|css|html)?$/i,     // 压缩文件格式
                filename: '[path].gz[query]',   // 压缩后的文件名
                algorithm: 'gzip',              // 使用gzip压缩
                minRatio: 0.8                   // 压缩率小于1才会压缩
            })
        ],
    },
    chainWebpack(config) {
        config.plugins.delete('preload') // TODO: need test
        config.plugins.delete('prefetch') // TODO: need test

        // set svg-sprite-loader
        config.module
            .rule('svg')
            .exclude.add(resolve('src/assets/icons'))
            .end()
        config.module
            .rule('icons')
            .test(/\.svg$/)
            .include.add(resolve('src/assets/icons'))
            .end()
            .use('svg-sprite-loader')
            .loader('svg-sprite-loader')
            .options({
                symbolId: 'icon-[name]'
            })
            .end()

        config
            .when(process.env.NODE_ENV !== 'development',
                config => {
                    config
                        .plugin('ScriptExtHtmlWebpackPlugin')
                        .after('html')
                        .use('script-ext-html-webpack-plugin', [{
                            // `runtime` must same as runtimeChunk name. default is `runtime`
                            inline: /runtime\..*\.js$/
                        }])
                        .end()
                    config
                        .optimization.splitChunks({
                        chunks: 'all',
                        cacheGroups: {
                            libs: {
                                name: 'chunk-libs',
                                test: /[\\/]node_modules[\\/]/,
                                priority: 10,
                                chunks: 'initial' // only package third parties that are initially dependent
                            },
                            elementUI: {
                                name: 'chunk-elementUI', // split elementUI into a single package
                                priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                                test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                            },
                            commons: {
                                name: 'chunk-commons',
                                test: resolve('src/components'), // can customize your rules
                                minChunks: 3, //  minimum common number
                                priority: 5,
                                reuseExistingChunk: true
                            }
                        }
                    })
                    config.optimization.runtimeChunk('single'),
                        {
                            from: path.resolve(__dirname, './public/robots.txt'), //防爬虫文件
                            to: './' //到根目录下
                        }
                }
            )
    }
}