m.hoolihome.com/babel.config.js

module.exports = {
  presets: [["@vue/app"], ["env", { modules: false }]],
  plugins: [
    [
      "import",
      {
        libraryName: "vant",
        libraryDirectory: "es",
        style: true
      }
    ],
    [
      "component",
      {
        libraryName: "element-ui",
        styleLibraryName: "theme-chalk"
      }
    ]
  ]
};