[youzan/vant]vue+ts+vant项目，使用Jest做单元测试报错！

Describe the bug 我们在项目中使用了 vue2.5.x + vant + typescript 构建，并且使用了Jest做单元测试，在已构建好的项目框架中，对组件做单元测试，但在测试中，发现问题。下面是我的测试代码：

import { shallowMount, createLocalVue } from '@vue/test-utils';
import Vuex from 'vuex';
import Home from '@/views/Home.vue';

const localVue = createLocalVue();
localVue.use(Vuex);

describe('对Home组件进行单元测试', () => {
  let getters!: any;
  let store!: any;

  beforeEach(() => {
    getters = {
      version: '0.1.2'
    };

    store = new Vuex.Store({
      getters
    });
  });

  // 挂载组件
  const wrapper = shallowMount(Home, { store, localVue });

  afterEach(() => {
    // 销毁实例
    wrapper.destroy();
  });

  test('验证Home是一个Vue的实例', () => {
    expect(wrapper.isVueInstance()).toBeTruthy();
  });
});

Home 组件关键代码如下：

<template>
....
</template>
<script lang="ts">
import { Component, Vue } from 'vue-property-decorator';
import { Button, Icon, Popup } from 'vant';
import { Getter } from 'vuex-class';
import menuList from '@/data/menuList';
import CommonMixins from '@/utils/mixins/commonMixins';

// 声明引入的组件
@Component({
  components: {
    [Button.name]: Button,
    [Icon.name]: Icon,
    [Popup.name]: Popup
  }
})
export default class Home extends CommonMixins {  // 类方式声明当前组件
  private menuList: any = menuList;
  private activeNames: string[] = ['0'];
  private popupShow: boolean = false;
  private logoPath = require('../assets/images/Logo.svg') as string;

  @Getter('version') private version: string;

  private beforeCreate() {
    // ...
  }

  private mounted() {
    // ...
  }
}
</script>

运行 npm run test:unit ，报下面的错误：

Test suite failed to run

    Jest encountered an unexpected token

    This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.

    By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".

    Here's what you can do:
     • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
     • If you need a custom transformation specify a "transform" option in your config.
     • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.

    You'll find more details and examples of these config options in
the docs:
    https://jestjs.io/docs/en/configuration.html

    Details:

    D:\myWorks\uoko-fe-themes-mobile\node_modules\vant\es\popup\style\index.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import '../../vant-css/base.css';

                        ^^^^^^

    SyntaxError: Unexpected token import

应该是不能识别 import。

Environment

• Device: windows10
• Browser: 谷歌
• Vant Version: v1.3.8

求解决方案。