vue.config.js

'use strict'
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 || 80// dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  
  // 部署应用的基本url  可用 process.env.NODE_ENV 环境变量控制
  publicPath: '/bxqt',

  // 指定生产环境目录
  outputDir: 'dist',

  // 指定生成静态资源的生成目录
  assetsDir: 'static',

  // 是否在开发环境下通过 eslint-loader 在每次保存时 lint 代码。
  lintOnSave: process.env.NODE_ENV === 'development',

  productionSourceMap: false,

  // 开发服务配置
  devServer: {
    port: port,
    open: false,
    overlay: {
      warnings: false,
      errors: true
    },
    proxy: {
      // change xxx-api/login => mock/login
      // detail: https://cli.vuejs.org/config/#devserver-proxy
      [process.env.VUE_APP_BASE_API]: {
        // target: 'http://yiban.gxun.edu.cn/bx',
        target: 'http://localhost:8089/',
        ws: false,
        secure: true, // 如果是https接口，需要配置这个参数
        changeOrigin: true,
        pathRewrite: {
          ['^' + process.env.VUE_APP_BASE_API]: ''
        }
      }
    }
  },

  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,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },

  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/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('inline-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$/
            }])
            .end()
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial' // only package third parties that are initially dependent
                },
                elementUI: {
                  name: 'chunk-elementUI', // split elementUI into a single package
                  priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components'), // can customize your rules
                  minChunks: 3, //  minimum common number
                  priority: 5,
                  reuseExistingChunk: true
                }
              }
            })
          config.optimization.runtimeChunk('single')
        }
      )
    // add by lct on 2019/08/10
    /*config.module.rule('css')
      .test(/\.css$/)
      .oneOf('vue')
      .resourceQuery(/\?vue/)
      .use('px2rem')
      .loader('px2rem-loader')
      .options({
        remUnit: 75
      })*/
    // px2rem-loader：配置项
    // remUnit：根元素字体大小
    // remPrecision：rem小数点后精度
  },

  css: {
    loaderOptions: {
      stylus: {
        'resolve url': true,
        'import': []
      }
    }
  },

  pluginOptions: {
    'cube-ui': {
      postCompile: true,
      theme: false
    }
  }
}