text: const path = require('path')
  const webpack = require('webpack')
  const createThemeColorReplacerPlugin = require('./config/plugin.config')
  
  function resolve(dir) {
      return path.join(__dirname, dir)
  }
  
  const isProd = process.env.NODE_ENV === 'production'
  
  const assetsCDN = {
      // webpack build externals
      externals: {
          vue: 'Vue',
          'vue-router': 'VueRouter',
          vuex: 'Vuex',
          axios: 'axios'
      },
      css: [],
      // https://unpkg.com/browse/vue@2.6.10/
      js: [
          '//cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.min.js',
          '//cdn.jsdelivr.net/npm/vue-router@3.1.3/dist/vue-router.min.js',
          '//cdn.jsdelivr.net/npm/vuex@3.1.1/dist/vuex.min.js',
          '//cdn.jsdelivr.net/npm/axios@0.19.0/dist/axios.min.js'
      ]
  }
  
  // vue.config.js
  const vueConfig = {
      configureWebpack: {
          // webpack plugins
          plugins: [
              // Ignore all locale files of moment.js
              new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/)
          ],
          // if prod, add externals
          externals: isProd ? assetsCDN.externals : {}
      },
  
      chainWebpack: config => {
          config.resolve.alias.set('@$', resolve('src'))
  
          const svgRule = config.module.rule('svg')
          svgRule.uses.clear()
          svgRule
              .oneOf('inline')
              .resourceQuery(/inline/)
              .use('vue-svg-icon-loader')
              .loader('vue-svg-icon-loader')
              .end()
              .end()
              .oneOf('external')
              .use('file-loader')
              .loader('file-loader')
              .options({
                  name: 'assets/[name].[hash:8].[ext]'
              })
  
          // if prod is on
          // assets require on cdn
          if (isProd) {
              config.plugin('html').tap(args => {
                  args[0].cdn = assetsCDN
                  return args
              })
          }
      },
  
      css: {
          loaderOptions: {
              less: {
                  modifyVars: {
                      // less vars，customize ant design theme
  
                      // 'primary-color': '#F5222D',
                      // 'link-color': '#F5222D',
                      'border-radius-base': '2px'
                  },
                  // DO NOT REMOVE THIS LINE
                  javascriptEnabled: true
              }
          }
      },
  
      devServer: {
          // development server port 8000
          port: 8000,
          // If you want to turn on the proxy, please remove the mockjs /src/main.jsL11
          proxy: {
              '/api': {
                  target: 'http://127.0.0.1:3000',
                  changeOrigin: true,
                  pathRewrite: {
                      '^/api': ''
                  }
              }
          }
      },
  
      // disable source map in production
      productionSourceMap: false,
      lintOnSave: undefined,
      // babel-loader no-ignore node_modules/*
      transpileDependencies: []
  }
  
  // preview.pro.loacg.com only do not use in your production;
  if (process.env.VUE_APP_PREVIEW === 'true') {
      console.log('VUE_APP_PREVIEW', true)
      // add `ThemeColorReplacer` plugin to webpack plugins
      vueConfig.configureWebpack.plugins.push(createThemeColorReplacerPlugin())
  }
  
  module.exports = vueConfig
  