new UglifyJsPlugin vue项目打包后不让报错

new UglifyJsPlugin({
      uglifyOptions: {
        compress: {
          warnings: false,
          //过滤console.log-start
          drop_console: true,
          pure_funcs: ['console.log']
          //过滤console.log-end
        }
      },
      sourceMap: config.build.productionSourceMap,
      parallel: true
    }),
    new UglifyJsPlugin({
      uglifyOptions: {
        compress: {
          warnings: false
        }
      },
      sourceMap: config.build.productionSourceMap,
      parallel: true
    }),