Vue如何实现路由懒加载

const router = new VueRouter({
  routes: [{ 
	  path: '/list', 
      component: @/components/list.vue
    }
  ]
})

const List = () => import('@/components/list.vue')
const router = new VueRouter({
  routes: [{
	   path: '/list', 
	   component: List 
	   }
  ]
})

const router = new Router({
  routes: [
   {
     path: '/list',
     component: (resolve) => {
 require(['@/components/list'], resolve)
     }
    }
  ]
})