formily

Pros of react-hook-form

• Lightweight and performant, with minimal re-renders
• Easy to integrate with existing React projects
• Extensive documentation and community support

Cons of react-hook-form

• Less opinionated, which may require more setup for complex forms
• Limited built-in UI components compared to Formily

Code Comparison

react-hook-form:

import { useForm } from "react-hook-form";

const { register, handleSubmit } = useForm();
const onSubmit = data => console.log(data);

<form onSubmit={handleSubmit(onSubmit)}>
  <input {...register("firstName")} />
  <input type="submit" />
</form>

Formily:

import { createForm } from '@formily/core'
import { FormProvider, Field } from '@formily/react'

const form = createForm()

<FormProvider form={form}>
  <Field name="firstName" component="Input" />
  <button onClick={() => console.log(form.values)}>Submit</button>
</FormProvider>

Both libraries offer efficient form handling in React applications. react-hook-form focuses on simplicity and performance, making it ideal for smaller projects or those requiring fine-grained control. Formily provides a more comprehensive solution with built-in components and advanced features, suitable for complex enterprise-level applications. The choice between them depends on project requirements and team preferences.

Pros of Formik

• Simpler API and easier learning curve for basic form handling
• Better integration with React ecosystem and popular UI libraries
• Smaller bundle size, leading to improved performance

Cons of Formik

• Less powerful for complex, dynamic form scenarios
• Limited built-in form components and validation rules
• Lacks advanced features like form layouts and field dependencies

Code Comparison

Formik:

import { Formik, Form, Field } from 'formik';

<Formik initialValues={{ name: '' }} onSubmit={handleSubmit}>
  <Form>
    <Field name="name" />
    <button type="submit">Submit</button>
  </Form>
</Formik>

Formily:

import { createForm } from '@formily/core'
import { FormProvider, Field } from '@formily/react'

const form = createForm()
<FormProvider form={form}>
  <Field name="name" component="Input" />
  <button onClick={form.submit}>Submit</button>
</FormProvider>

Formily offers a more flexible and powerful approach for complex form scenarios, while Formik provides a simpler and more straightforward solution for basic form handling. Formily's API is more extensive, allowing for advanced features like dynamic form generation and complex validation rules, but it comes with a steeper learning curve. Formik, on the other hand, is easier to get started with and integrates well with the React ecosystem, making it a popular choice for simpler form requirements.

Pros of react-final-form

• Lightweight and minimalistic, focusing on core form functionality
• Excellent performance with minimal re-renders
• Extensive documentation and community support

Cons of react-final-form

• Less opinionated, requiring more setup for complex forms
• Fewer built-in components and validations compared to Formily

Code Comparison

react-final-form:

import { Form, Field } from 'react-final-form'

<Form
  onSubmit={onSubmit}
  render={({ handleSubmit }) => (
    <form onSubmit={handleSubmit}>
      <Field name="firstName" component="input" placeholder="First Name" />
    </form>
  )}
/>

Formily:

import { createForm } from '@formily/core'
import { FormProvider, Field } from '@formily/react'

const form = createForm()

<FormProvider form={form}>
  <Field name="firstName" component="Input" placeholder="First Name" />
</FormProvider>

Key Differences

• react-final-form uses a render prop pattern, while Formily uses a more declarative approach
• Formily provides a rich set of pre-built components and integrations
• react-final-form focuses on form state management, leaving UI implementation to the developer
• Formily offers more advanced features like schema-driven forms and complex layouts out of the box

Both libraries are powerful tools for form management in React applications, with react-final-form being more flexible and lightweight, while Formily provides a more comprehensive solution with additional features and components.

Pros of Unform

• Lightweight and minimalistic approach, focusing on core form functionality
• Easier learning curve for developers familiar with React ecosystem
• Better integration with React Native out of the box

Cons of Unform

• Less comprehensive feature set compared to Formily
• Smaller community and ecosystem of plugins/extensions
• Limited support for complex, nested form structures

Code Comparison

Unform:

import { Form } from '@unform/web';
import Input from './components/Input';

function MyForm() {
  function handleSubmit(data) {
    console.log(data);
  }

  return (
    <Form onSubmit={handleSubmit}>
      <Input name="email" />
      <button type="submit">Submit</button>
    </Form>
  );
}

Formily:

import { createForm } from '@formily/core'
import { FormProvider, Field } from '@formily/react'
import { Input, FormItem } from '@formily/antd'

const form = createForm()

const MyForm = () => (
  <FormProvider form={form}>
    <Field name="email" title="Email" component={[FormItem, Input]} />
    <button onClick={() => console.log(form.values)}>Submit</button>
  </FormProvider>
)

Both libraries aim to simplify form management in React applications, but they differ in their approach and feature set. Unform offers a more straightforward API, making it easier to get started, while Formily provides a more robust and flexible solution for complex form scenarios.

Pros of TanStack Form

• Lightweight and flexible, with a smaller bundle size
• Framework-agnostic, supporting React, Vue, Svelte, and more
• Strong TypeScript support with type inference

Cons of TanStack Form

• Less opinionated, requiring more setup for complex forms
• Fewer built-in components and validations compared to Formily
• Steeper learning curve for beginners

Code Comparison

Formily:

import { createForm } from '@formily/core'
import { Field } from '@formily/react'

const form = createForm()

<Field
  name="username"
  component="Input"
  required
  validator={{ format: 'email' }}
/>

TanStack Form:

import { useForm } from '@tanstack/react-form'

const form = useForm({
  defaultValues: { username: '' },
  onSubmit: async (values) => {
    // Handle submission
  },
})

<form.Field
  name="username"
  validate={(value) => (value ? undefined : 'Required')}
>
  {(field) => <input {...field.props} />}
</form.Field>

Both libraries offer powerful form management capabilities, but TanStack Form provides more flexibility and framework independence, while Formily offers a more comprehensive out-of-the-box solution with extensive components and validations. The choice between them depends on project requirements and developer preferences.