Skip to content

react-hook-form/resolvers

master
Switch branches/tags
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
Nov 16, 2020

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

npm downloads npm npm

Install

$ npm install @hookform/resolvers

Links

API

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

resolver(schema: object, schemaOptions?: object, resolverOptions: Options)
type Required Description
schema object โœ“ validation schema
schemaOptions object validation library schema options
resolverOptions object resolver options, async is the default mode

Quickstart

Yup

Dead simple Object schema validation.

npm

import { useForm } from 'react-hook-form';
import { yupResolver } from '@hookform/resolvers/yup';
import * as yup from 'yup';

const schema = yup
  .object()
  .shape({
    name: yup.string().required(),
    age: yup.number().required(),
  })
  .required();

const App = () => {
  const { register, handleSubmit } = useForm({
    resolver: yupResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('name')} />
      <input type="number" {...register('age')} />
      <input type="submit" />
    </form>
  );
};

Zod

TypeScript-first schema validation with static type inference

npm

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

import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import * as z from 'zod';

const schema = z.object({
  name: z.string().min(1, { message: 'Required' }),
  age: z.number().min(10),
});

const App = () => {
  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm({
    resolver: zodResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('name')} />
      {errors.name?.message && <p>{errors.name?.message}</p>}
      <input type="number" {...register('age', { valueAsNumber: true })} />
      {errors.age?.message && <p>{errors.age?.message}</p>}
      <input type="submit" />
    </form>
  );
};

Superstruct

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

npm

import { useForm } from 'react-hook-form';
import { superstructResolver } from '@hookform/resolvers/superstruct';
import { object, string, number } from 'superstruct';

const schema = object({
  name: string(),
  age: number(),
});

const App = () => {
  const { register, handleSubmit } = useForm({
    resolver: superstructResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('name')} />
      <input type="number" {...register('age', { valueAsNumber: true })} />
      <input type="submit" />
    </form>
  );
};

Joi

The most powerful data validation library for JS.

npm

import { useForm } from 'react-hook-form';
import { joiResolver } from '@hookform/resolvers/joi';
import Joi from 'joi';

const schema = Joi.object({
  name: Joi.string().required(),
  age: Joi.number().required(),
});

const App = () => {
  const { register, handleSubmit } = useForm({
    resolver: joiResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('name')} />
      <input type="number" {...register('age')} />
      <input type="submit" />
    </form>
  );
};

Vest

Vest ๐Ÿฆบ Declarative Validation Testing.

npm

import { useForm } from 'react-hook-form';
import { vestResolver } from '@hookform/resolvers/vest';
import { create, test, enforce } from 'vest';

const validationSuite = create((data = {}) => {
  test('username', 'Username is required', () => {
    enforce(data.username).isNotEmpty();
  });

  test('password', 'Password is required', () => {
    enforce(data.password).isNotEmpty();
  });
});

const App = () => {
  const { register, handleSubmit, errors } = useForm({
    resolver: vestResolver(validationSuite),
  });

  return (
    <form onSubmit={handleSubmit((data) => console.log(data))}>
      <input {...register('username')} />
      <input type="password" {...register('password')} />
      <input type="submit" />
    </form>
  );
};

Class Validator

Decorator-based property validation for classes.

npm

โš ๏ธ Remember to add these options to your tsconfig.json!

"strictPropertyInitialization": false,
"experimentalDecorators": true
import { useForm } from 'react-hook-form';
import { classValidatorResolver } from '@hookform/resolvers/class-validator';
import { Length, Min, IsEmail } from 'class-validator';

class User {
  @Length(2, 30)
  username: string;

  @IsEmail()
  email: string;
}

const resolver = classValidatorResolver(User);

const App = () => {
  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm<User>({ resolver });

  return (
    <form onSubmit={handleSubmit((data) => console.log(data))}>
      <input type="text" {...register('username')} />
      {errors.username && <span>{errors.username.message}</span>}
      <input type="text" {...register('email')} />
      {errors.email && <span>{errors.email.message}</span>}
      <input type="submit" value="Submit" />
    </form>
  );
};

io-ts

Validate your data with powerful decoders.

npm

import React from 'react';
import { useForm } from 'react-hook-form';
import { ioTsResolver } from '@hookform/resolvers/io-ts';
import t from 'io-ts';
// you don't have to use io-ts-types but it's very useful
import tt from 'io-ts-types';

const schema = t.type({
  username: t.string,
  age: tt.NumberFromString,
});

const App = () => {
  const { register, handleSubmit } = useForm({
    resolver: ioTsResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('username')} />
      <input type="number" {...register('age')} />
      <input type="submit" />
    </form>
  );
};

export default App;

Nope

A small, simple, and fast JS validator

npm

import { useForm } from 'react-hook-form';
import { nopeResolver } from '@hookform/resolvers/nope';
import Nope from 'nope-validator';

const schema = Nope.object().shape({
  name: Nope.string().required(),
  age: Nope.number().required(),
});

const App = () => {
  const { register, handleSubmit } = useForm({
    resolver: nopeResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('name')} />
      <input type="number" {...register('age')} />
      <input type="submit" />
    </form>
  );
};

computed-types

TypeScript-first schema validation with static type inference

npm

import { useForm } from 'react-hook-form';
import { computedTypesResolver } from '@hookform/resolvers/computed-types';
import Schema, { number, string } from 'computed-types';

const schema = Schema({
  username: string.min(1).error('username field is required'),
  age: number,
});

const App = () => {
  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm({
    resolver: computedTypesResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('name')} />
      {errors.name?.message && <p>{errors.name?.message}</p>}
      <input type="number" {...register('age', { valueAsNumber: true })} />
      {errors.age?.message && <p>{errors.age?.message}</p>}
      <input type="submit" />
    </form>
  );
};

typanion

Static and runtime type assertion library with no dependencies

npm

import { useForm } from 'react-hook-form';
import { typanionResolver } from '@hookform/resolvers/typanion';
import * as t from 'typanion';

const isUser = t.isObject({
  username: t.applyCascade(t.isString(), [t.hasMinLength(1)]),
  age: t.applyCascade(t.isNumber(), [
    t.isInteger(),
    t.isInInclusiveRange(1, 100),
  ]),
});

const App = () => {
  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm({
    resolver: typanionResolver(isUser),
  });

  return (
    <form onSubmit={handleSubmit((d) => console.log(d))}>
      <input {...register('name')} />
      {errors.name?.message && <p>{errors.name?.message}</p>}
      <input type="number" {...register('age')} />
      {errors.age?.message && <p>{errors.age?.message}</p>}
      <input type="submit" />
    </form>
  );
};

Ajv

The fastest JSON validator for Node.js and browser

npm

import { useForm } from 'react-hook-form';
import { ajvResolver } from '@hookform/resolvers/ajv';

// must use `minLength: 1` to implement required field
const schema = {
  type: 'object',
  properties: {
    username: {
      type: 'string',
      minLength: 1,
      errorMessage: { minLength: 'username field is required' },
    },
    password: {
      type: 'string',
      minLength: 1,
      errorMessage: { minLength: 'password field is required' },
    },
  },
  required: ['username', 'password'],
  additionalProperties: false,
};

const App = () => {
  const {
    register,
    handleSubmit,
    formState: { errors },
  } = useForm({
    resolver: ajvResolver(schema),
  });

  return (
    <form onSubmit={handleSubmit((data) => console.log(data))}>
      <input {...register('username')} />
      {errors.username && <span>{errors.username.message}</span>}
      <input {...register('password')} />
      {errors.password && <span>{errors.password.message}</span>}
      <button type="submit">submit</button>
    </form>
  );
};

Backers

Thanks goes to all our backers! [Become a backer].

Organizations

Thanks goes to these wonderful organizations! [Contribute].

Contributors

Thanks goes to these wonderful people! [Become a contributor].