Pros of Formik

• More comprehensive form management solution with built-in validation, error handling, and form submission
• Simpler API and less boilerplate code required for common form scenarios
• Better integration with React ecosystem and hooks

Cons of Formik

• Steeper learning curve for developers new to the library
• May be overkill for simple form implementations
• Less flexibility for custom form layouts compared to Form

Code Comparison

Form:

<Form onSubmit={this.onSubmit}>
  {({ getFieldDecorator }) => (
    <Form.Item>
      {getFieldDecorator('username', {
        rules: [{ required: true, message: 'Please input your username!' }],
      })(<Input placeholder="Username" />)}
    </Form.Item>
  )}
</Form>

Formik:

<Formik
  initialValues={{ username: '' }}
  onSubmit={this.onSubmit}
  validationSchema={Yup.object().shape({
    username: Yup.string().required('Please input your username!'),
  })}
>
  {({ errors, touched }) => (
    <Form>
      <Field name="username" placeholder="Username" />
      {errors.username && touched.username && <div>{errors.username}</div>}
    </Form>
  )}
</Formik>

Pros of react-hook-form

• Lightweight and performant, with minimal re-renders
• Easy integration with existing forms and custom inputs
• Built-in validation and error handling

Cons of react-hook-form

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

Code Comparison

react-hook-form:

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

function App() {
  const { register, handleSubmit } = useForm();
  const onSubmit = data => console.log(data);
  
  return (
    <form onSubmit={handleSubmit(onSubmit)}>
      <input {...register("firstName")} />
      <input {...register("lastName")} />
      <input type="submit" />
    </form>
  );
}

rc-form:

import { createForm } from 'rc-form';

class Form extends React.Component {
  submit = () => {
    this.props.form.validateFields((error, value) => {
      console.log(error, value);
    });
  }
  render() {
    const { getFieldDecorator } = this.props.form;
    return (
      <form onSubmit={this.submit}>
        {getFieldDecorator('firstName')(<input />)}
        {getFieldDecorator('lastName')(<input />)}
        <button type="submit">Submit</button>
      </form>
    );
  }
}

export default createForm()(Form);

The main difference is that react-hook-form uses hooks and functional components, while rc-form uses class components and higher-order components. react-hook-form's API is more concise and modern, while rc-form provides a more structured approach to form management.

Pros of react-final-form

• More lightweight and performant, with a smaller bundle size
• Better support for complex form structures and nested fields
• Offers a more flexible API with powerful validation and submission handling

Cons of react-final-form

• Steeper learning curve for developers new to the library
• Less comprehensive documentation compared to react-component/form
• Fewer pre-built form components, requiring more custom implementation

Code Comparison

react-component/form:

import { Form, Input } from 'rc-form';

const MyForm = ({ form }) => (
  <Form onSubmit={handleSubmit}>
    <Form.Item>
      {form.getFieldDecorator('username', {
        rules: [{ required: true, message: 'Please input your username!' }],
      })(<Input />)}
    </Form.Item>
  </Form>
);

react-final-form:

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

const MyForm = () => (
  <Form onSubmit={handleSubmit}>
    {({ handleSubmit }) => (
      <form onSubmit={handleSubmit}>
        <Field name="username" validate={required}>
          {({ input, meta }) => (
            <div>
              <input {...input} />
              {meta.error && meta.touched && <span>{meta.error}</span>}
            </div>
          )}
        </Field>
      </form>
    )}
  </Form>
);

Pros of redux-form

• Seamless integration with Redux state management
• Powerful form validation and normalization features
• Extensive documentation and community support

Cons of redux-form

• Steeper learning curve for developers new to Redux
• Can be overkill for simple form implementations
• Performance concerns with large forms due to frequent re-renders

Code Comparison

redux-form:

import { reduxForm, Field } from 'redux-form';

const SimpleForm = ({ handleSubmit }) => (
  <form onSubmit={handleSubmit}>
    <Field name="firstName" component="input" type="text" />
    <button type="submit">Submit</form>
  </form>
);

export default reduxForm({ form: 'simple' })(SimpleForm);

react-component/form:

import { createForm } from 'rc-form';

const SimpleForm = ({ form }) => (
  <form onSubmit={form.submit}>
    <input {...form.getFieldProps('firstName')} />
    <button type="submit">Submit</button>
  </form>
);

export default createForm()(SimpleForm);

Both libraries provide form management solutions for React applications, but they differ in their approach and complexity. redux-form is more feature-rich and integrates tightly with Redux, while react-component/form offers a simpler, more lightweight solution that doesn't require Redux. The choice between the two depends on the project's requirements, team expertise, and desired level of form management complexity.

Pros of Unform

• More lightweight and performant, with a focus on uncontrolled components
• Better TypeScript support and type inference
• Easier integration with React Native projects

Cons of Unform

• Less mature and smaller community compared to Form
• Fewer pre-built form components and validations out of the box
• Steeper learning curve for developers used to traditional form libraries

Code Comparison

Form:

import { Form, Input } from 'rc-form';

const MyForm = ({ form }) => (
  <Form>
    <Input name="username" />
    <button type="submit">Submit</button>
  </Form>
);

export default Form.create()(MyForm);

Unform:

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

const MyForm = () => (
  <Form onSubmit={handleSubmit}>
    <Input name="username" />
    <button type="submit">Submit</button>
  </Form>
);

export default MyForm;

The main difference is that Unform uses a more modern, hooks-based approach, while Form relies on higher-order components. Unform's implementation is generally more concise and doesn't require wrapping the component with a create function.