vue.config.js

const path = require('path');

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

module.exports = {
  // 基本路径
  baseUrl: '/',
  // 输出文件目录
  outputDir: 'dist',
  // eslint-loader 是否在保存的时候检查
  lintOnSave: true,
  // use the full build with in-browser compiler?
  // https://vuejs.org/v2/guide/installation.html#Runtime-Compiler-vs-Runtime-only
  // compiler: false,
  // webpack配置
  // see https://github.com/vuejs/vue-cli/blob/dev/docs/webpack.md
  chainWebpack: (config) => {
    // key,value自行定义，比如.set('@@', resolve('src/components'))
    config.resolve.alias
      .set('@', resolve('src'))
      .set('_c', resolve('src/components'))
  },

  // configureWebpack: () => {},
  // vue-loader 配置项
  // https://vue-loader.vuejs.org/en/options.html
  // vueLoader: {},
  // 生产环境是否生成 sourceMap 文件
  productionSourceMap: true,
  // css相关配置
  css: {
    // 是否使用css分离插件 ExtractTextPlugin
    extract: true,
    // 开启 CSS source maps?
    sourceMap: false,
    // css预设器配置项
    loaderOptions: {},
    // 启用 CSS modules for all css / pre-processor files.
    modules: false
  },
  // use thread-loader for babel & TS in production build
  // enabled by default if the machine has more than 1 cores
  // parallel: require('os').cpus().length > 1,
  // 是否启用dll
  // See https://github.com/vuejs/vue-cli/blob/dev/docs/cli-service.md#dll-mode
  // dll: false,
  // PWA 插件相关配置
  // see https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-plugin-pwa
  // pwa: {},
  // webpack-dev-server 相关配置
  devServer: {
    open: false,
    host: 'localhost',
    port: 8080, //端口
    https: false,
    hotOnly: false,
    proxy: { // 设置代理
      '/api': {
        target: 'http://core-service.myreal3d.com/',
        // ws: true,
        changOrigin: true,
        // pathRewrite: {
        //   '^/api': ''
        // }
      }
    }
  },
  // 第三方插件配置
  pluginOptions: {
    // ...
  }
}