优化cdn动态加载管理端，修复砍价金额bug，删除部分不规范代码

manager/vue.config.js

@@ -1,10 +1,55 @@
 const path = require("path");
 const CompressionPlugin = require("compression-webpack-plugin");
-
+const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
 const resolve = dir => {
   return path.join(__dirname, dir);
 };
+/**
+ * 在项目开发的时候将生产环境以及开发环境进行判断
+ * 将生产环境中的路径用cdn来进行优化处理
+ * 将开发环境中替换为本地的内容，方便处理bug以及开启vueDev
+ * 我们可以根据环境变量进行相应的处理，只有在产品的时候，才让插件去自动注入相应的资源文件到html页面
+ */
+const enableProduction = process.env.NODE_ENV === "production"; // 是否生产环境
 
+let externals = {
+  vue: "Vue",
+  axios: "axios",
+  "vue-router": "VueRouter",
+  vuex: "Vuex",
+  "view-design": "iview",
+  "vue-lazyload": "VueLazyload",
+  "js-cookie": "Cookies",
+  wangeditor: "wangEditor",
+  "sockjs-client": "SockJS",
+  vuedraggable: "vuedraggable",
+  "@antv/g2": "G2",
+  dplayer: "DPlayer"
+};
+
+// 使用CDN的内容
+let cdn = {
+  css: ["https://cdn.jsdelivr.net/npm/view-design@4.1.1/dist/styles/iview.css"],
+  js: [
+    // vue must at first!
+    "https://cdn.jsdelivr.net/npm/vue@2.6.11/dist/vue.min.js",
+    "https://cdn.jsdelivr.net/npm/vuex@3.1.2/dist/vuex.min.js",
+    "https://cdn.jsdelivr.net/npm/vue-router@3.1.3/dist/vue-router.min.js",
+    "https://cdn.jsdelivr.net/npm/axios@0.19.0/dist/axios.min.js",
+    "https://cdn.jsdelivr.net/npm/view-design@4.1.1/dist/iview.min.js",
+    "https://cdn.jsdelivr.net/npm/vue-lazyload@1.3.3/vue-lazyload.min.js",
+    "https://cdn.jsdelivr.net/npm/js-cookie@2.2.1/src/js.cookie.min.js",
+    "https://cdn.jsdelivr.net/npm/dplayer@1.25.0/dist/DPlayer.min.js",
+    "https://cdn.jsdelivr.net/npm/wangeditor@latest/dist/wangEditor.min.js",
+    "https://cdn.jsdelivr.net/npm/sockjs-client@1/dist/sockjs.min.js",
+    "https://cdn.jsdelivr.net/npm/vuedraggable@2.23.2/dist/vuedraggable.umd.min.js",
+    "https://gw.alipayobjects.com/os/lib/antv/g2/4.1.24/dist/g2.min.js"
+  ]
+};
+
+// 判断是否需要加载CDN
+cdn = enableProduction ? cdn : { css: [], js: [] };
+externals = enableProduction ? externals : {};
 module.exports = {
   css: {
     loaderOptions: {
@@ -20,37 +65,13 @@ module.exports = {
     port: 10003
   },
 
-  chainWebpack: config => {
-    //  @ 对应 src目录
-    config.resolve.alias.set("@", resolve("src"));
-  },
-
   // 打包时不生成.map文件 避免看到源码
   productionSourceMap: false,
 
   // 部署优化
   configureWebpack: {
     // 使用CDN
-    externals: {
-      vue: "Vue",
-      "vue-i18n": "VueI18n",
-      axios: "axios",
-      "vue-router": "VueRouter",
-      vuex: "Vuex",
-      "view-design": "iview",
-      xlsx: "XLSX",
-      dplayer: "DPlayer",
-      "print-js": "printJS",
-      html2canvas: "html2canvas",
-      "vue-json-pretty": "VueJsonPretty",
-      "vue-lazyload": "VueLazyload",
-      gitalk: "Gitalk",
-      "js-cookie": "Cookies",
-      wangEditor: "wangEditor",
-      stompjs: "Stomp",
-      "sockjs-client": "SockJS",
-      vuedraggable: "vuedraggable"
-    },
+    externals: externals,
     // GZIP压缩
     plugins: [
       new CompressionPlugin({
@@ -58,8 +79,24 @@ module.exports = {
         threshold: 10240 // 对超过10k文件压缩
       })
     ],
+    mode: "production",
     optimization: {
       runtimeChunk: "single",
+      minimizer: [
+        new UglifyJsPlugin({
+          uglifyOptions: {
+            // 删除注释
+            output: {
+              comments: false
+            },
+            compress: {
+              drop_console: true, // 删除所有调式带有console的
+              drop_debugger: true,
+              pure_funcs: ["console.log"] // 删除console.log
+            }
+          }
+        })
+      ],
       splitChunks: {
         chunks: "all",
         maxInitialRequests: Infinity,
@@ -81,6 +118,15 @@ module.exports = {
       }
     }
   },
+  // 将cdn的资源挂载到插件上
+  chainWebpack(config) {
+    //  @ 对应 src目录
+    config.resolve.alias.set("@", resolve("src"));
+    config.plugin("html").tap(args => {
+      args[0].cdn = cdn;
+      return args;
+    });
+  },
 
   pluginOptions: {
     "style-resources-loader": {