smoa_web/babel.config.js

module.exports = {
  // presets: [
  //   // https://github.com/vuejs/vue-cli/tree/master/packages/@vue/babel-preset-app
  //   '@vue/cli-plugin-babel/preset'
  // ],
  presets: [
    [

    	"@babel/preset-env",
    	{
      	useBuiltIns: "entry", // or "usage"
      	corejs: 3
    	}
    ],
    "@vue/cli-plugin-babel/preset"
  ],
  'env': {
    'development': {
      // babel-plugin-dynamic-import-node plugin only does one thing by converting all import() to require().
      // This plugin can significantly increase the speed of hot updates, when you have a large number of pages.
      // https://panjiachen.github.io/vue-element-admin-site/guide/advanced/lazy-loading.html
      'plugins': ['dynamic-import-node']
    }
  }
}