项目中添加该插件依赖后run dev出错，是缺少什么loader么

[fanspring]

` error in ./node_modules/@riophae/vue-treeselect/src/components/Treeselect.vue?vue&type=script&lang=js&

Module parse failed: Unexpected token (33:6)
You may need an appropriate loader to handle this file type.

|   render() {
|     return (
>       <div ref="wrapper" class={this.wrapperClass}>
|         <HiddenFields />
|         <Control ref="control" />

@ ./node_modules/@riophae/vue-treeselect/src/components/Treeselect.vue?vue&type=script&lang=js& 1:0-118 1:134-137 1:139-254 1:139-254
@ ./node_modules/@riophae/vue-treeselect/src/components/Treeselect.vue
@ ./node_modules/babel-loader/lib!./node_modules/vue-loader/lib??vue-loader-options!./src/views/project/fileModule.vue?vue&type=script&lang=js&
@ ./src/views/project/fileModule.vue?vue&type=script&lang=js&
@ ./src/views/project/fileModule.vue
@ ./src/router/index.js
@ ./src/main.js
@ multi (webpack)-dev-server/client?http://localhost:9528 (webpack)/hot/dev-server.js ./src/main.js`

[fanspring]

确认了下：

import VueTreeselect from "@riophae/vue-treeselect/src/components/Treeselect";

按照这种方式引用时就会报上述错，按照下面方式则正常

import Treeselect from '@riophae/vue-treeselect'