front/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: [
    ['@vue/app', {
      polyfills: [
        'es.promise',
        'es.symbol',
        'es.map',
        'es.set'
      ]
    }]
  ],
  compact: false,
  '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.
      'plugins': ['dynamic-import-node', 'macros']
    }
  }
}