dms55h5/babel.config.js

module.exports = {
  presets: [
    ['@vue/app', {
      useBuiltIns: 'entry'
    }]
  ],
  plugins: [
    '@babel/plugin-proposal-optional-chaining',
    [
      'import',
      {
        libraryName: 'vant',
        libraryDirectory: 'es',
        // 指定样式路径
        style: (name) => `${name}/style/less`
      },
      'vant'
    ]
  ]
}