Form , HasError, AlertError (export and import) was not found in vform

Question

Form , HasError, AlertError (export and import) was not found in vform When I use the following code. It's not working:

import { Form, HasError, AlertError } from 'vform'
Vue.component(HasError.name, HasError)
Vue.component(AlertError.name, AlertError)

When I use the following code. It's working:

import  Form from 'vform'
import  HasError from 'vform'
import  AlertError from 'vform'
Vue.component(HasError.name, HasError)
Vue.component(AlertError.name, AlertError)

Why does the first process not working? I'm using laravel 8 and vue 3