去除打印

vue.config.js

@@ -131,23 +131,25 @@ module.exports = {
         }
       )
       if(process.env.NODE_ENV=='production'){
-        plugins.push(
-          new UglifyJsPlugin({
-            uglifyOptions: {
-              compress: {
-                // warnings: false,
-                drop_console: true,
-                drop_debugger: false,
-                pure_funcs: ["console.log"] //移除console
-              },
-            },
-            sourceMap: false,
-            parallel: true,
-          })
-        );
-        config.plugins = [...config.plugins, ...plugins];
+        config.mode = 'production'
+      config.optimization.minimizer = [
+        new UglifyJsPlugin({
+          uglifyOptions: {
+            // 删除注释
+			output: {
+				comments: false
+			},
+			// 删除console debugger 删除警告
+			compress: {     
+				drop_console: true, // console
+				drop_debugger: false,
+				pure_funcs: ['console.log']// 移除console
+			}, 
+			warnings: false,	//	这样写就不报错  
+          }
+        })
+      ]
       }
-      // config.plugins = [...config.plugins, ...plugins];
   },