gin-vue-admin/web/babel.config.js

module.exports = {
  
  presets: [
    
    '@vue/cli-plugin-babel/preset',
    "@vue/app",{
      polyfills:[
         "es6.promise",
         "es6.symbol",
         "es6.array.iterator",
         "es6.object.assign"
      ],
      useBuiltIns:"entry"
   }
  ],
  
  'plugins': [

  ]
}