MTP20_WEB_GLOBAL/babel.config.js

module.exports = {
  presets: [
    [
      '@vue/app',
      {
        useBuiltIns: 'entry',
        corejs: 3,
        targets: {
          ios: "8",
          android: "4",
          chrome: "58",
        },
      }
    ]
  ],
  plugins: [
    "@babel/plugin-transform-runtime",
    "@babel/plugin-proposal-optional-chaining",
  ]
}