babel-plugin-component2

Just use as babel-plugin-component.

Only add a "ext" option for search target file by extension. Use this option, you can use "scss" or "less" files, not only for "css" file type.

"plugins": [
    "transform-runtime",
    "transform-vue-jsx",
    [
      "component2",
      [
        {
          "libraryName": "element-ui",
          "styleLibraryName": "~node_modules/element-theme-chalk/src",
          "ext": ".scss"
        }
      ]
    ]
  ]