react-component-generator

name	react-component-generator
description	Generates modern React components with TypeScript, hooks, proper props typing, and best practices. Use when creating React components or scaffolding UI elements.

React Component Generator Skill

You are an expert at creating modern React components following current best practices.

When to Activate

• User asks to "create a React component"
• User says "generate a [ComponentName] component"
• User requests "scaffold React UI for [feature]"
• User wants to "build a [component type] in React"

Component Generation Process

1. Gather Requirements

Ask clarifying questions if not provided:

• Component name (PascalCase)
• Component purpose and functionality
• Props needed and their types
• State requirements
• Side effects or data fetching
• Styling approach (CSS Modules, Styled Components, Tailwind)
• Testing requirements

2. Create Component File Structure

// ComponentName.tsx
import React, { useState, useEffect, useCallback } from 'react';
import styles from './ComponentName.module.css';

interface ComponentNameProps {
  title: string;
  onAction?: () => void;
  items?: Item[];
  className?: string;
  children?: React.ReactNode;
}

export const ComponentName: React.FC<ComponentNameProps> = ({
  title,
  onAction,
  items = [],
  className = '',
  children,
}) => {
  // State
  const [isLoading, setIsLoading] = useState(false);

  // Effects
  useEffect(() => {
    // Side effects here
  }, [dependencies]);

  // Handlers
  const handleClick = useCallback(() => {
    if (onAction) {
      onAction();
    }
  }, [onAction]);

  // Render
  return (
    <div className={`${styles.container} ${className}`}>
      <h2 className={styles.title}>{title}</h2>
      {isLoading ? (
        <div className={styles.loading}>Loading...</div>
      ) : (
        <div className={styles.content}>
          {children}
        </div>
      )}
    </div>
  );
};

ComponentName.displayName = 'ComponentName';

3. Create Associated Files

Styles File (ComponentName.module.css):

.container {
  padding: 1rem;
  border-radius: 0.5rem;
  background-color: var(--background);
}

.title {
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.content {
  /* Content styles */
}

.loading {
  display: flex;
  justify-content: center;
  padding: 2rem;
}

Test File (ComponentName.test.tsx):

import { render, screen, fireEvent } from '@testing-library/react';
import { ComponentName } from './ComponentName';

describe('ComponentName', () => {
  it('renders with required props', () => {
    render(<ComponentName title="Test Title" />);
    expect(screen.getByText('Test Title')).toBeInTheDocument();
  });

  it('calls onAction when clicked', () => {
    const handleAction = jest.fn();
    render(<ComponentName title="Test" onAction={handleAction} />);

    fireEvent.click(screen.getByRole('button'));
    expect(handleAction).toHaveBeenCalledTimes(1);
  });
});

Barrel Export (index.ts):

export { ComponentName } from './ComponentName';
export type { ComponentNameProps } from './ComponentName';

4. Best Practices to Follow

TypeScript:

• Use proper prop types with interface
• Export prop types for reusability
• Use React.FC for type safety
• Define event handler types correctly

Component Structure:

• Props destructuring with defaults
• Hooks at top (useState, useEffect, etc.)
• Helper functions and handlers
• Return JSX
• Set displayName for debugging

Performance:

• Use useCallback for functions passed as props
• Use useMemo for expensive calculations
• Implement proper dependency arrays
• Consider React.memo for expensive components

Accessibility:

• Use semantic HTML elements
• Add ARIA labels where needed
• Ensure keyboard navigation works
• Maintain proper heading hierarchy

File Organization:

ComponentName/
├── ComponentName.tsx       # Component logic
├── ComponentName.module.css # Styles
├── ComponentName.test.tsx  # Tests
├── ComponentName.stories.tsx # Storybook (optional)
└── index.ts               # Barrel export

Component Patterns

Simple Presentational Component

interface ButtonProps {
  label: string;
  onClick: () => void;
  variant?: 'primary' | 'secondary';
  disabled?: boolean;
}

export const Button: React.FC<ButtonProps> = ({
  label,
  onClick,
  variant = 'primary',
  disabled = false,
}) => (
  <button
    className={styles[variant]}
    onClick={onClick}
    disabled={disabled}
  >
    {label}
  </button>
);

Container with Data Fetching

export const UserList: React.FC = () => {
  const [users, setUsers] = useState<User[]>([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  useEffect(() => {
    const fetchUsers = async () => {
      try {
        const response = await fetch('/api/users');
        const data = await response.json();
        setUsers(data);
      } catch (err) {
        setError(err.message);
      } finally {
        setLoading(false);
      }
    };

    fetchUsers();
  }, []);

  if (loading) return <LoadingSpinner />;
  if (error) return <ErrorMessage message={error} />;

  return (
    <ul>
      {users.map(user => (
        <UserListItem key={user.id} user={user} />
      ))}
    </ul>
  );
};

Form Component with Validation

interface FormData {
  email: string;
  password: string;
}

export const LoginForm: React.FC = () => {
  const [formData, setFormData] = useState<FormData>({
    email: '',
    password: '',
  });
  const [errors, setErrors] = useState<Partial<FormData>>({});

  const validate = (): boolean => {
    const newErrors: Partial<FormData> = {};

    if (!formData.email.includes('@')) {
      newErrors.email = 'Invalid email';
    }

    if (formData.password.length < 8) {
      newErrors.password = 'Password too short';
    }

    setErrors(newErrors);
    return Object.keys(newErrors).length === 0;
  };

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    if (validate()) {
      // Submit form
    }
  };

  return (
    <form onSubmit={handleSubmit}>
      <input
        type="email"
        value={formData.email}
        onChange={(e) => setFormData({ ...formData, email: e.target.value })}
      />
      {errors.email && <span className={styles.error}>{errors.email}</span>}

      <button type="submit">Login</button>
    </form>
  );
};

Output Format

After creating component, provide:

1. ✅ Component file created at [path]
2. ✅ Styles file created at [path]
3. ✅ Test file created at [path]
4. ✅ Index export created at [path]
5. 📝 Usage example
6. 🔍 Next steps (add to parent, style further, etc.)

Remember

• Always use TypeScript
• Include proper prop types
• Add basic tests
• Follow React best practices
• Use hooks correctly
• Make components reusable
• Consider accessibility
• Keep components focused and single-purpose