Performant, flexible and extensible forms with easy to use validation.

React Hook Form Resolvers

This function allows you to use any external validation library such as Yup, Zod, Joi, Vest, Ajv and many others. The goal is to make sure you can seamlessly integrate whichever validation library you prefer. If you're not using a library, you can always write your own logic to validate your forms.

Install

Install your preferred validation library alongside @hookform/resolvers.

npm install @hookform/resolvers # npm
yarn add @hookform/resolvers # yarn
pnpm install @hookform/resolvers # pnpm
bun install @hookform/resolvers # bun

Resolver Comparison

resolver	Infer values from schema	criteriaMode
AJV	❌	`firstError
Arktype	✅	firstError
class-validator	✅	`firstError
computed-types	✅	firstError
Effect	✅	`firstError
fluentvalidation-ts	❌	firstError
io-ts	✅	firstError
joi	❌	`firstError
Nope	❌	firstError
Standard Schema	✅	`firstError
Superstruct	✅	firstError
typanion	✅	firstError
typebox	✅	`firstError
typeschema	❌	`firstError
valibot	✅	`firstError
vest	❌	`firstError
vine	✅	`firstError
yup	✅	`firstError
zod	✅	`firstError

Links

• React-hook-form validation resolver documentation

Supported resolvers

• Install
• Links
  • Supported resolvers
• API
• Quickstart
  • Yup
  • Zod
  • Superstruct
  • Joi
  • Vest
  • Class Validator
  • io-ts
  • Nope
  • computed-types
  • typanion
  • Ajv
  • TypeBox
    • With ValueCheck
    • With TypeCompiler
  • ArkType
  • Valibot
  • TypeSchema
  • effect-ts
  • VineJS
  • fluentvalidation-ts
  • standard-schema
• Backers
  • Sponsors
• Contributors

API

type Options = {
  mode: 'async' | 'sync',
  raw?: boolean
}

resolver(schema: object, schemaOptions?: object, resolverOptions: Options)

	type	Required	Description
schema	object	✓	validation schema
schemaOptions	object		validation library schema options
resolverOptions	object		resolver options, async is the default mode

Quickstart

Yup

Dead simple Object schema validation.

1import { useForm } from 'react-hook-form';
2import { yupResolver } from '@hookform/resolvers/yup';
3import * as yup from 'yup';
4
5const schema = yup
6  .object()
7  .shape({
8    name: yup.string().required(),
9    age: yup.number().required(),
10  })
11  .required();
12
13const App = () => {
14  const { register, handleSubmit } = useForm({
15    resolver: yupResolver(schema),
16  });
17
18  return (
19    <form onSubmit={handleSubmit((d) => console.log(d))}>
20      <input {...register('name')} />
21      <input type="number" {...register('age')} />
22      <input type="submit" />
23    </form>
24  );
25};

Zod

TypeScript-first schema validation with static type inference

⚠️ Example below uses the valueAsNumber, which requires react-hook-form v6.12.0 (released Nov 28, 2020) or later.

1import { useForm } from 'react-hook-form';
2import { zodResolver } from '@hookform/resolvers/zod';
3import { z } from 'zod';
4
5const schema = z.object({
6  name: z.string().min(1, { message: 'Required' }),
7  age: z.number().min(10),
8});
9
10const App = () => {
11  const {
12    register,
13    handleSubmit,
14    formState: { errors },
15  } = useForm({
16    resolver: zodResolver(schema),
17  });
18
19  return (
20    <form onSubmit={handleSubmit((d) => console.log(d))}>
21      <input {...register('name')} />
22      {errors.name?.message && <p>{errors.name?.message}</p>}
23      <input type="number" {...register('age', { valueAsNumber: true })} />
24      {errors.age?.message && <p>{errors.age?.message}</p>}
25      <input type="submit" />
26    </form>
27  );
28};

Superstruct

A simple and composable way to validate data in JavaScript (or TypeScript).

1import { useForm } from 'react-hook-form';
2import { superstructResolver } from '@hookform/resolvers/superstruct';
3import { object, string, number } from 'superstruct';
4
5const schema = object({
6  name: string(),
7  age: number(),
8});
9
10const App = () => {
11  const { register, handleSubmit } = useForm({
12    resolver: superstructResolver(schema),
13  });
14
15  return (
16    <form onSubmit={handleSubmit((d) => console.log(d))}>
17      <input {...register('name')} />
18      <input type="number" {...register('age', { valueAsNumber: true })} />
19      <input type="submit" />
20    </form>
21  );
22};

Joi

The most powerful data validation library for JS.

1import { useForm } from 'react-hook-form';
2import { joiResolver } from '@hookform/resolvers/joi';
3import Joi from 'joi';
4
5const schema = Joi.object({
6  name: Joi.string().required(),
7  age: Joi.number().required(),
8});
9
10const App = () => {
11  const { register, handleSubmit } = useForm({
12    resolver: joiResolver(schema),
13  });
14
15  return (
16    <form onSubmit={handleSubmit((d) => console.log(d))}>
17      <input {...register('name')} />
18      <input type="number" {...register('age')} />
19      <input type="submit" />
20    </form>
21  );
22};

Vest

Vest 🦺 Declarative Validation Testing.

1import { useForm } from 'react-hook-form';
2import { vestResolver } from '@hookform/resolvers/vest';
3import { create, test, enforce } from 'vest';
4
5const validationSuite = create((data = {}) => {
6  test('username', 'Username is required', () => {
7    enforce(data.username).isNotEmpty();
8  });
9
10  test('password', 'Password is required', () => {
11    enforce(data.password).isNotEmpty();
12  });
13});
14
15const App = () => {
16  const { register, handleSubmit, errors } = useForm({
17    resolver: vestResolver(validationSuite),
18  });
19
20  return (
21    <form onSubmit={handleSubmit((data) => console.log(data))}>
22      <input {...register('username')} />
23      <input type="password" {...register('password')} />
24      <input type="submit" />
25    </form>
26  );
27};

Class Validator

Decorator-based property validation for classes.

⚠️ Remember to add these options to your tsconfig.json!

"strictPropertyInitialization": false,
"experimentalDecorators": true

1import { useForm } from 'react-hook-form';
2import { classValidatorResolver } from '@hookform/resolvers/class-validator';
3import { Length, Min, IsEmail } from 'class-validator';
4
5class User {
6  @Length(2, 30)
7  username: string;
8
9  @IsEmail()
10  email: string;
11}
12
13const resolver = classValidatorResolver(User);
14
15const App = () => {
16  const {
17    register,
18    handleSubmit,
19    formState: { errors },
20  } = useForm<User>({ resolver });
21
22  return (
23    <form onSubmit={handleSubmit((data) => console.log(data))}>
24      <input type="text" {...register('username')} />
25      {errors.username && <span>{errors.username.message}</span>}
26      <input type="text" {...register('email')} />
27      {errors.email && <span>{errors.email.message}</span>}
28      <input type="submit" value="Submit" />
29    </form>
30  );
31};

io-ts

Validate your data with powerful decoders.

1import React from 'react';
2import { useForm } from 'react-hook-form';
3import { ioTsResolver } from '@hookform/resolvers/io-ts';
4import t from 'io-ts';
5// you don't have to use io-ts-types, but it's very useful
6import tt from 'io-ts-types';
7
8const schema = t.type({
9  username: t.string,
10  age: tt.NumberFromString,
11});
12
13const App = () => {
14  const { register, handleSubmit } = useForm({
15    resolver: ioTsResolver(schema),
16  });
17
18  return (
19    <form onSubmit={handleSubmit((d) => console.log(d))}>
20      <input {...register('username')} />
21      <input type="number" {...register('age')} />
22      <input type="submit" />
23    </form>
24  );
25};
26
27export default App;

Nope

A small, simple, and fast JS validator

1import { useForm } from 'react-hook-form';
2import { nopeResolver } from '@hookform/resolvers/nope';
3import Nope from 'nope-validator';
4
5const schema = Nope.object().shape({
6  name: Nope.string().required(),
7  age: Nope.number().required(),
8});
9
10const App = () => {
11  const { register, handleSubmit } = useForm({
12    resolver: nopeResolver(schema),
13  });
14
15  return (
16    <form onSubmit={handleSubmit((d) => console.log(d))}>
17      <input {...register('name')} />
18      <input type="number" {...register('age')} />
19      <input type="submit" />
20    </form>
21  );
22};

computed-types

TypeScript-first schema validation with static type inference

1import { useForm } from 'react-hook-form';
2import { computedTypesResolver } from '@hookform/resolvers/computed-types';
3import Schema, { number, string } from 'computed-types';
4
5const schema = Schema({
6  username: string.min(1).error('username field is required'),
7  age: number,
8});
9
10const App = () => {
11  const {
12    register,
13    handleSubmit,
14    formState: { errors },
15  } = useForm({
16    resolver: computedTypesResolver(schema),
17  });
18
19  return (
20    <form onSubmit={handleSubmit((d) => console.log(d))}>
21      <input {...register('name')} />
22      {errors.name?.message && <p>{errors.name?.message}</p>}
23      <input type="number" {...register('age', { valueAsNumber: true })} />
24      {errors.age?.message && <p>{errors.age?.message}</p>}
25      <input type="submit" />
26    </form>
27  );
28};

typanion

Static and runtime type assertion library with no dependencies

1import { useForm } from 'react-hook-form';
2import { typanionResolver } from '@hookform/resolvers/typanion';
3import * as t from 'typanion';
4
5const isUser = t.isObject({
6  username: t.applyCascade(t.isString(), [t.hasMinLength(1)]),
7  age: t.applyCascade(t.isNumber(), [
8    t.isInteger(),
9    t.isInInclusiveRange(1, 100),
10  ]),
11});
12
13const App = () => {
14  const {
15    register,
16    handleSubmit,
17    formState: { errors },
18  } = useForm({
19    resolver: typanionResolver(isUser),
20  });
21
22  return (
23    <form onSubmit={handleSubmit((d) => console.log(d))}>
24      <input {...register('name')} />
25      {errors.name?.message && <p>{errors.name?.message}</p>}
26      <input type="number" {...register('age')} />
27      {errors.age?.message && <p>{errors.age?.message}</p>}
28      <input type="submit" />
29    </form>
30  );
31};

Ajv

The fastest JSON validator for Node.js and browser

1import { useForm } from 'react-hook-form';
2import { ajvResolver } from '@hookform/resolvers/ajv';
3
4// must use `minLength: 1` to implement required field
5const schema = {
6  type: 'object',
7  properties: {
8    username: {
9      type: 'string',
10      minLength: 1,
11      errorMessage: { minLength: 'username field is required' },
12    },
13    password: {
14      type: 'string',
15      minLength: 1,
16      errorMessage: { minLength: 'password field is required' },
17    },
18  },
19  required: ['username', 'password'],
20  additionalProperties: false,
21};
22
23const App = () => {
24  const {
25    register,
26    handleSubmit,
27    formState: { errors },
28  } = useForm({
29    resolver: ajvResolver(schema),
30  });
31
32  return (
33    <form onSubmit={handleSubmit((data) => console.log(data))}>
34      <input {...register('username')} />
35      {errors.username && <span>{errors.username.message}</span>}
36      <input {...register('password')} />
37      {errors.password && <span>{errors.password.message}</span>}
38      <button type="submit">submit</button>
39    </form>
40  );
41};

TypeBox

JSON Schema Type Builder with Static Type Resolution for TypeScript

With ValueCheck

1import { useForm } from 'react-hook-form';
2import { typeboxResolver } from '@hookform/resolvers/typebox';
3import { Type } from '@sinclair/typebox';
4
5const schema = Type.Object({
6  username: Type.String({ minLength: 1 }),
7  password: Type.String({ minLength: 1 }),
8});
9
10const App = () => {
11  const { register, handleSubmit } = useForm({
12    resolver: typeboxResolver(schema),
13  });
14
15  return (
16    <form onSubmit={handleSubmit((d) => console.log(d))}>
17      <input {...register('username')} />
18      <input type="password" {...register('password')} />
19      <input type="submit" />
20    </form>
21  );
22};

With TypeCompiler

A high-performance JIT of TypeBox, read more

1import { useForm } from 'react-hook-form';
2import { typeboxResolver } from '@hookform/resolvers/typebox';
3import { Type } from '@sinclair/typebox';
4import { TypeCompiler } from '@sinclair/typebox/compiler';
5
6const schema = Type.Object({
7  username: Type.String({ minLength: 1 }),
8  password: Type.String({ minLength: 1 }),
9});
10
11const typecheck = TypeCompiler.Compile(schema);
12
13const App = () => {
14  const { register, handleSubmit } = useForm({
15    resolver: typeboxResolver(typecheck),
16  });
17
18  return (
19    <form onSubmit={handleSubmit((d) => console.log(d))}>
20      <input {...register('username')} />
21      <input type="password" {...register('password')} />
22      <input type="submit" />
23    </form>
24  );
25};

ArkType

TypeScript's 1:1 validator, optimized from editor to runtime

1import { useForm } from 'react-hook-form';
2import { arktypeResolver } from '@hookform/resolvers/arktype';
3import { type } from 'arktype';
4
5const schema = type({
6  username: 'string>1',
7  password: 'string>1',
8});
9
10const App = () => {
11  const { register, handleSubmit } = useForm({
12    resolver: arktypeResolver(schema),
13  });
14
15  return (
16    <form onSubmit={handleSubmit((d) => console.log(d))}>
17      <input {...register('username')} />
18      <input type="password" {...register('password')} />
19      <input type="submit" />
20    </form>
21  );
22};

Valibot

The modular and type safe schema library for validating structural data

1import { useForm } from 'react-hook-form';
2import { valibotResolver } from '@hookform/resolvers/valibot';
3import * as v from 'valibot';
4
5const schema = v.object({
6  username: v.pipe(
7    v.string('username is required'),
8    v.minLength(3, 'Needs to be at least 3 characters'),
9    v.endsWith('cool', 'Needs to end with `cool`'),
10  ),
11  password: v.string('password is required'),
12});
13
14const App = () => {
15  const { register, handleSubmit } = useForm({
16    resolver: valibotResolver(schema),
17  });
18
19  return (
20    <form onSubmit={handleSubmit((d) => console.log(d))}>
21      <input {...register('username')} />
22      <input type="password" {...register('password')} />
23      <input type="submit" />
24    </form>
25  );
26};

TypeSchema

Universal adapter for schema validation, compatible with any validation library

1import { useForm } from 'react-hook-form';
2import { typeschemaResolver } from '@hookform/resolvers/typeschema';
3import { z } from 'zod';
4
5// Use your favorite validation library
6const schema = z.object({
7  username: z.string().min(1, { message: 'Required' }),
8  password: z.number().min(1, { message: 'Required' }),
9});
10
11const App = () => {
12  const { register, handleSubmit } = useForm({
13    resolver: typeschemaResolver(schema),
14  });
15
16  return (
17    <form onSubmit={handleSubmit((d) => console.log(d))}>
18      <input {...register('username')} />
19      <input type="password" {...register('password')} />
20      <input type="submit" />
21    </form>
22  );
23};

effect-ts

A powerful TypeScript framework that provides a fully-fledged functional effect system with a rich standard library.

1import React from 'react';
2import { useForm } from 'react-hook-form';
3import { effectTsResolver } from '@hookform/resolvers/effect-ts';
4import { Schema } from 'effect';
5
6const schema = Schema.Struct({
7  username: Schema.String.pipe(
8    Schema.nonEmptyString({ message: () => 'username required' }),
9  ),
10  password: Schema.String.pipe(
11    Schema.nonEmptyString({ message: () => 'password required' }),
12  ),
13});
14
15type FormData = typeof schema.Type;
16
17interface Props {
18  onSubmit: (data: FormData) => void;
19}
20
21function TestComponent({ onSubmit }: Props) {
22  const {
23    register,
24    handleSubmit,
25    formState: { errors },
26    // provide generic if TS has issues inferring types
27  } = useForm<FormData>({
28    resolver: effectTsResolver(schema),
29  });
30
31  return (
32    <form onSubmit={handleSubmit(onSubmit)}>
33      <input {...register('username')} />
34      {errors.username && <span role="alert">{errors.username.message}</span>}
35
36      <input {...register('password')} />
37      {errors.password && <span role="alert">{errors.password.message}</span>}
38
39      <button type="submit">submit</button>
40    </form>
41  );
42}

VineJS

VineJS is a form data validation library for Node.js

1import { useForm } from 'react-hook-form';
2import { vineResolver } from '@hookform/resolvers/vine';
3import vine from '@vinejs/vine';
4
5const schema = vine.compile(
6  vine.object({
7    username: vine.string().minLength(1),
8    password: vine.string().minLength(1),
9  }),
10);
11
12const App = () => {
13  const { register, handleSubmit } = useForm({
14    resolver: vineResolver(schema),
15  });
16
17  return (
18    <form onSubmit={handleSubmit((d) => console.log(d))}>
19      <input {...register('username')} />
20      {errors.username && <span role="alert">{errors.username.message}</span>}
21      <input {...register('password')} />
22      {errors.password && <span role="alert">{errors.password.message}</span>}
23      <button type="submit">submit</button>
24    </form>
25  );
26};

fluentvalidation-ts

A TypeScript-first library for building strongly-typed validation rules

1import { useForm } from 'react-hook-form';
2import { fluentValidationResolver } from '@hookform/resolvers/fluentvalidation-ts';
3import { Validator } from 'fluentvalidation-ts';
4
5class FormDataValidator extends Validator<FormData> {
6  constructor() {
7    super();
8
9    this.ruleFor('username')
10      .notEmpty()
11      .withMessage('username is a required field');
12    this.ruleFor('password')
13      .notEmpty()
14      .withMessage('password is a required field');
15  }
16}
17
18const App = () => {
19  const { register, handleSubmit } = useForm({
20    resolver: fluentValidationResolver(new FormDataValidator()),
21  });
22
23  return (
24    <form onSubmit={handleSubmit((d) => console.log(d))}>
25      <input {...register('username')} />
26      {errors.username && <span role="alert">{errors.username.message}</span>}
27      <input {...register('password')} />
28      {errors.password && <span role="alert">{errors.password.message}</span>}
29      <button type="submit">submit</button>
30    </form>
31  );
32};

standard-schema

A standard interface for TypeScript schema validation libraries

Example zod

1import { useForm } from 'react-hook-form';
2import { standardSchemaResolver } from '@hookform/resolvers/standard-schema';
3import { z } from 'zod';
4
5const schema = z.object({
6  name: z.string().min(1, { message: 'Required' }),
7  age: z.number().min(10),
8});
9
10const App = () => {
11  const {
12    register,
13    handleSubmit,
14    formState: { errors },
15  } = useForm({
16    resolver: standardSchemaResolver(schema),
17  });
18
19  return (
20    <form onSubmit={handleSubmit((d) => console.log(d))}>
21      <input {...register('name')} />
22      {errors.name?.message && <p>{errors.name?.message}</p>}
23      <input type="number" {...register('age', { valueAsNumber: true })} />
24      {errors.age?.message && <p>{errors.age?.message}</p>}
25      <input type="submit" />
26    </form>
27  );
28};

Example arkType

1import { useForm } from 'react-hook-form';
2import { standardSchemaResolver } from '@hookform/resolvers/standard-schema';
3import { type } from 'arktype';
4
5const schema = type({
6  username: 'string>1',
7  password: 'string>1',
8});
9
10const App = () => {
11  const { register, handleSubmit } = useForm({
12    resolver: standardSchemaResolver(schema),
13  });
14
15  return (
16    <form onSubmit={handleSubmit((d) => console.log(d))}>
17      <input {...register('username')} />
18      <input type="password" {...register('password')} />
19      <input type="submit" />
20    </form>
21  );
22};

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