uglifyjs-webpack-plugin压缩组件库代码

uglifyjs-webpack-plugin存在的坑

最新版uglifyjs-webpack-plugin有es6语法没有用babel转es5，导致打包报错

解决方案(版本回退)

npm i uglifyjs-webpack-plugin@1

vue.config.js中配置

configureWebpack: config => {
   let plugins = [
      new UglifyJsPlugin({
      uglifyOptions: {
      	output: {
          comments: false
        },
        compress: {
          warnings: false,
          drop_debugger: true,
          drop_console: true,
        },
      },
      sourceMap: false,
      parallel: true,
    })
  ];
  config.plugins = [...config.plugins, ...plugins];	
}

参考链接

vue.config.js配置
打包优化
github中issues链接