import { useForm } from 'react-hook-form'; type AsyncSubmissionFormData = { username: string;}; export const AsyncSubmissionForm = () => { const { register, handleSubmit } = useForm<AsyncSubmissionFormData>(); const onSubmit = async (data: AsyncSubmissionFormData) => { await new Promise((resolve) => setTimeout(resolve, 1000)); alert(JSON.stringify(data)); }; return ( <form onSubmit={handleSubmit(onSubmit)} className="mb-4"> <input {...register('username')} placeholder="Username" className="p-2 border rounded mb-2" /> <button type="submit" className="bg-blue-500 text-white p-2 rounded"> Submit </button> </form> );};