ERROR in static/js/*** from UglifyJs Unexpected token: punc (,) [./~/@vant/popperjs/dist/index.esm.mjs:71,0][static/js/app.647c4df1bc08fccb4c0d.js:685,9]

 今天打包的时候发现这样的问题，解决方式：

找到webpack.base.conf.js文件，加入下边的代码：

 

{
        test: /\.mjs$/,
        loader: "babel-loader",
        include: [resolve("node_modules/@vant/popperjs/dist/index.esm.mjs")]
      },