Chakra UI + React Hook Form

import { useForm } from 'react-hook-form'
import React from 'react'
import {
  FormErrorMessage,
  FormLabel,
  FormControl,
  Input,
  Button,
} from '@chakra-ui/react'

export default function HookForm() {
  const {
    handleSubmit,
    register,
    formState: { errors, isSubmitting },
  } = useForm()

  function onSubmit(values) {
    return new Promise((resolve) => {
      setTimeout(() => {
        alert(JSON.stringify(values, null, 2))
        resolve()
      }, 3000)
    })
  }

  return (
    <form onSubmit={handleSubmit(onSubmit)}>
      <FormControl isInvalid={errors.name}>
        <FormLabel htmlFor='name'>First name</FormLabel>
        <Input
          id='name'
          placeholder='name'
          {...register('name', {
            required: 'This is required',
            minLength: { value: 4, message: 'Minimum length should be 4' },
          })}
        />
        <FormErrorMessage>
          {errors.name && errors.name.message}
        </FormErrorMessage>
      </FormControl>
      <Button mt={4} colorScheme='teal' isLoading={isSubmitting} type='submit'>
        Submit
      </Button>
    </form>
  )
}

import React from 'react'
import ReactDOM from 'react-dom'
import HookForm from './HookForm'
import { ChakraProvider, CSSReset, Box } from '@chakra-ui/react'

function App() {
  return (
    <ChakraProvider>
      <CSSReset />
      <Box p={4}>
        <HookForm />
      </Box>
    </ChakraProvider>
  )
}

const rootElement = document.getElementById('root')
ReactDOM.render(<App />, rootElement)