text: const path = require('path')
  const webpack = require('webpack')
  const GitRevisionPlugin = require('git-revision-webpack-plugin')
  const GitRevision = new GitRevisionPlugin()
  const buildDate = JSON.stringify(new Date().toLocaleString())
  const createThemeColorReplacerPlugin = require('./config/plugin.config')
  
  function resolve (dir) {
    return path.join(__dirname, dir)
  }
  
  // check Git
  function getGitHash () {
    try {
      return GitRevision.version()
    } catch (e) {}
    return 'unknown'
  }
  
  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$/, /moment$/),
        new webpack.DefinePlugin({
          APP_VERSION: `"${require('./package.json').version}"`,
          GIT_HASH: JSON.stringify(getGitHash()),
          BUILD_DATE: buildDate
        })
      ],
      // 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: {
        '/': {
          target: 'http://localhost:8082',
          ws: false,
          changeOrigin: true,
          pathRewrite: {
            '^/ ': ''
          }
        }
      }
    },
  
    // disable source map in production
    productionSourceMap: false,
    lintOnSave: false,
    // 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
  