vue.config.js

'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')

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

const LodashModuleReplacementPlugin = require("lodash-webpack-plugin")

const name = defaultSettings.title || 'vue Admin Template' // page title


const port = process.env.port || process.env.npm_config_port || 9000 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  // lintOnSave: process.env.NODE_ENV === 'development',
  lintOnSave: false,
  productionSourceMap: false,
  devServer: {
    port: port,
    hot: true,
    overlay: {
      warnings: false,
      errors: true
    },
    // 配置代理服务器的跨域
    proxy:{
      "/dev-api":{
        // 注意:由于用户相关API与商品相关API的接口端口号不同
        // 这里在设置目标服务器的时候不设置端口,让devServer自己去轮询服务器端口
        target:"http://39.98.123.211",
        changeOrigin:true,
        pathRewrite:{
          "^/dev-api":""
        }
      },
    },
    // mock的钩子函数配置(登录接口不再使用mock,因此进行注释)
    // before: require('./mock/mock-server.js')
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    module:{
      rules:[
        {
          test:/\.less$/,
          use:["less-loader"]
        }
      ]
    },
    plugins:[
      new LodashModuleReplacementPlugin()
    ]

  },
  chainWebpack(config) {

    // 配置文件路径别名
    config.resolve.alias
      .set('@',resolve('src'))
      .set('api',resolve('src/api'))
      .set('assets',resolve('src/assets'))
      .set('components',resolve('src/components'))
      .set('icons',resolve('src/icons'))
      .set('layout',resolve('src/layout'))
      .set('router',resolve('src/router'))
      .set('store',resolve('src/store'))
      .set('styles',resolve('src/styles'))
      .set('utils',resolve('src/utils'))
      .set('views',resolve('src/views'))

    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload').tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: 'initial'
      }
    ])

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch')

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/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
                }
              }
            })
          // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
          config.optimization.runtimeChunk('single')
        }
      )
  }
}