.babelrc

{
  "presets": [["@babel/preset-env", { "modules": false }]],
  "plugins": [
    ["@babel/plugin-proposal-object-rest-spread"],
    [
      "component",
      {
        "libraryName": "element-ui",
        "styleLibraryName": "theme-chalk"
      }
    ]
  ]
}