UglifyJs + Unexpected token punc «(», expected punc报错问题媳修复

步骤1

npm run build 

dist目录没有生成，查到打包日主出现Unexpected token punc «{», expected punc报错

步骤2

查看webpack是否用uglifyjs-webpack-plugin插件

步骤3

const UglifyJsPlugin = require("uglifyjs-webpack-plugin")
换成
const TerserPlugin = require("terser-webpack-plugin");