• Vue-cli3 vue.config.js配置详解


    本文参考:https://blog.csdn.net/namechenfl/article/details/99325222

    const path = require("path");
    const UglifyPlugin = require("uglifyjs-webpack-plugin");
    module.exports = {
      // 基本路径
      /* 部署生产环境和开发环境下的URL:可对当前环境进行区分,baseUrl 从 Vue CLI 3.3 起已弃用,要使用publicPath */
      /* baseUrl: process.env.NODE_ENV === 'production' ? './' : '/' */
      publicPath: process.env.NODE_ENV === "production" ? "./" : "./",
      // 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,
      runtimeCompiler: true, //关键点在这
      // 调整内部的 webpack 配置。
      // 查阅 https://github.com/vuejs/vue-doc-zh-cn/vue-cli/webpack.md
      // webpack配置
      // see https://github.com/vuejs/vue-cli/blob/dev/docs/webpack.md
      chainWebpack: () => {},
      configureWebpack: config => {
        if (process.env.NODE_ENV === "production") {
          // 为生产环境修改配置...
          config.mode = "production";
          // 将每个依赖包打包成单独的js文件
          var optimization = {
            runtimeChunk: "single",
            splitChunks: {
              chunks: "all",
              maxInitialRequests: Infinity,
              minSize: 20000, // 依赖包超过20000bit将被单独打包
              cacheGroups: {
                vendor: {
                  test: /[\/]node_modules[\/]/,
                  name(module) {
                    // get the name. E.g. node_modules/packageName/not/this/part.js
                    // or node_modules/packageName
                    const packageName = module.context.match(
                      /[\/]node_modules[\/](.*?)([\/]|$)/
                    )[1];
                    // npm package names are URL-safe, but some servers don't like @ symbols
                    return `npm.${packageName.replace("@", "")}`;
                  }
                }
              }
            },
            minimizer: [
              new UglifyPlugin({
                uglifyOptions: {
                  compress: {
                    warnings: false,
                    drop_console: true, // console
                    drop_debugger: false,
                    pure_funcs: ["console.log"] // 移除console
                  }
                }
              })
            ]
          };
          Object.assign(config, {
            optimization
          });
        } else {
          // 为开发环境修改配置...
          config.mode = "development";
          var optimization2 = {
            runtimeChunk: "single",
            splitChunks: {
              chunks: "all",
              maxInitialRequests: Infinity,
              minSize: 20000, // 依赖包超过20000bit将被单独打包
              cacheGroups: {
                vendor: {
                  test: /[\/]node_modules[\/]/,
                  name(module) {
                    // get the name. E.g. node_modules/packageName/not/this/part.js
                    // or node_modules/packageName
                    const packageName = module.context.match(
                      /[\/]node_modules[\/](.*?)([\/]|$)/
                    )[1];
                    // npm package names are URL-safe, but some servers don't like @ symbols
                    return `npm.${packageName.replace("@", "")}`;
                  }
                }
              }
            }
          };
        }
        Object.assign(config, {
          // 开发生产共同配置
     
          // externals: {
          //   'vue': 'Vue',
          //   'element-ui': 'ELEMENT',
          //   'vue-router': 'VueRouter',
          //   'vuex': 'Vuex'
          // } // 防止将某些 import 的包(package)打包到 bundle 中,而是在运行时(runtime)再去从外部获取这些扩展依赖(用于csdn引入)
          resolve: {
            extensions: [".js", ".vue", ".json"], //文件优先解析后缀名顺序
            alias: {
              "@": path.resolve(__dirname, "./src"),
              "@c": path.resolve(__dirname, "./src/components"),
              "@v": path.resolve(__dirname, "./src/views"),
              "@u": path.resolve(__dirname, "./src/utils"),
              "@s": path.resolve(__dirname, "./src/service")
            }, // 别名配置
            plugins: []
          },
          optimization: optimization2
        });
      },
      // 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: false,
      // css相关配置
      css: {
        // 是否使用css分离插件 ExtractTextPlugin
        // extract: true, //注释css热更新生效
        // 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: {
        /* 自动打开浏览器 */
        open: false,
        host: "0.0.0.0", //局域网和本地访问
        //host: "192.168.1.137",
        port: 8848,
        https: false,
        hotOnly: false,
        /* 使用代理 */
        proxy: {
          // 以userApi开头的请求才会使用到该代理,即前端访问地址 http://localhost:8848/userApi/query/users会被拦截
          '/userApi': {
            target: 'http://localhost:8081/', // 代理的地址
            changeOrigin: true, // 开启跨域
            ws: true,
            pathRewrite: {
              '/userApi': '' // 当请求以/userApi开头时,将其置为空 则请求最终为http://localhost:8081/query/users
            }
          }
        },
        before: () => {}
      },
      // 第三方插件配置
      pluginOptions: {}
    };
    
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  • 原文地址:https://www.cnblogs.com/code-duck/p/13377871.html
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