如何在vue-router中使用async/await？

import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../views/Home.vue'

Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    name: 'Home',
    component: Home
  },
  {
    path: '/about',
    name: 'About',
    component: () => import(/* webpackChunkName: "about" */ '../views/About.vue')
  },
  {
    path: '/async',
    name: 'Async',
    component: async () => {
      const module = await import(/* webpackChunkName: "async" */ '../views/Async.vue')
      return module.default
    }
  }
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

export default router

<template>
  <div id="app">
    <router-view></router-view>
  </div>
</template>