vue.config.js

'use strict'
const packageJson = require('./package.json')
const path = require('path')
const defaultSettings = require('./src/settings.js')
function resolve(dir) {
  return path.join(__dirname, dir)
}
const name = defaultSettings.title // page title
const port = process.env.port || process.env.npm_config_port || 9528 // dev port
// All configuration item explanations can be find in https://cli.vuejs.org/config/
const devMode = false // process.env.NODE_ENV !== "production";
// 转为CND外链方式的npm包，键名是import的npm包名，键值是该库暴露的全局变量，参考https://webpack.js.org/configuration/externals/#src/components/Sidebar/Sidebar.jsx
const externals = {
  vue: 'Vue',
  'vue-router': 'VueRouter',
  vuex: 'Vuex',
  axios: 'axios',
  'element-ui': 'ELEMENT'
}
// CDN外链，会插入到index.html中
// CDN外链，会插入到index.html中
const cdn = {
  // 开发环境
  dev: {
    css: ['https://unpkg.com/element-ui@2.13.2/lib/theme-chalk/index.css'],
    js: [
      'https://cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.min.js',
      'https://cdn.jsdelivr.net/npm/vue-router@3.0.6/dist/vue-router.min.js',
      'https://cdn.jsdelivr.net/npm/vuex@3.1.0/dist/vuex.min.js',
      'https://cdn.jsdelivr.net/npm/axios@0.18.0/dist/axios.min.js',
      'https://unpkg.com/element-ui@2.13.2/lib/index.js'
    ]
  },
  // 生产环境
  build: {
    css: ['https://unpkg.com/element-ui@2.13.2/lib/theme-chalk/index.css'],
    js: [
      'https://cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.min.js',
      'https://cdn.jsdelivr.net/npm/vue-router@3.0.6/dist/vue-router.min.js',
      'https://cdn.jsdelivr.net/npm/vuex@3.1.0/dist/vuex.min.js',
      'https://cdn.jsdelivr.net/npm/axios@0.18.0/dist/axios.min.js',
      'https://unpkg.com/element-ui@2.13.2/lib/index.js'
    ]
  }
}

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: process.env.NODE_ENV === 'production' ? '/dist/' : './', // "./",
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,
  devServer: {
    disableHostCheck: true,
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true
    },
    proxy: {
      // change xxx-api/login => mock/login
      // detail: https://cli.vuejs.org/config/#devserver-proxy
      '/cwxt-base-cms/': {
        target: 'http://192.168.2.121', // http://192.168.2.111:29095 // http://192.168.2.235:29090
        changeOrigin: true
      }
    }
  },
  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.
    const myConfig = {}
    myConfig.name = name
    myConfig.resolve = {
      alias: {
        '@': resolve('src')
      }
    }
    if (!devMode) {
      myConfig.externals = externals
    }
    return myConfig
  },
  chainWebpack(config) {
    config.plugins.delete('preload') // TODO: need test
    config.plugins.delete('prefetch') // TODO: need test

    /**
     * 添加CDN参数到htmlWebpackPlugin配置中
     */
    config.plugin('html').tap(args => {
      args[0].version = packageJson.version
      if (process.env.NODE_ENV === 'production') {
        args[0].cdn = cdn.build
      }
      if (process.env.NODE_ENV === 'development') {
        args[0].cdn = cdn.dev
      }
      return args
    })

    // 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()

    // set preserveWhitespace
    config.module
      .rule('vue')
      .use('vue-loader')
      .loader('vue-loader')
      .tap(options => {
        options.compilerOptions.preserveWhitespace = true
        return options
      })
      .end()

    config
      // https://webpack.js.org/configuration/devtool/#development
      .when(process.env.NODE_ENV === 'development', config =>
        config.devtool('cheap-source-map')
      )

    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')
    })
  }
}