React Best Practices

Component Guidelines

• Keep components small and focused on a single responsibility
• Use descriptive names for components and props
• Always use TypeScript for better type safety
• Prefer composition over inheritance
• Extract reusable logic into custom hooks

Development Checklist

• Set up ESLint and Prettier
• Configure TypeScript
• Write comprehensive tests
• Implement error boundaries
• Add prop validation
• Optimize bundle size

Performance Tips (Ordered)

1. Use React.memo for expensive components

   const ExpensiveComponent = React.memo(({ data }) => {
     return <div>{/* Complex rendering logic */}</div>;
   });

2. Avoid inline functions in render methods

   // ❌ Bad
   <Button onClick={() => doSomething()} />
   
   // ✅ Good
   <Button onClick={handleClick} />

3. Lazy load components with React.lazy

   const LazyComponent = React.lazy(() => import("./LazyComponent"));

4. Use useMemo and useCallback strategically

Simple Feature List

• 🚀 Fast development with Vite
• 📱 Responsive design out of the box
• 🎨 Beautiful UI components
• 🔒 Type-safe with TypeScript
• 🧪 Comprehensive testing setup
• 📈 Performance optimized

Common Mistakes to Avoid

• Don’t mutate state directly

  // ❌ Wrong
  state.items.push(newItem);
  
  // ✅ Correct
  setState((prev) => [...prev, newItem]);

• Don’t forget dependency arrays in useEffect

• Avoid too many re-renders with careful state design

• Always provide key props for list items

Nested Lists Example

• Frontend Technologies

  • React 18 with Concurrent Features
  • Next.js for SSR/SSG
  • Tailwind CSS for styling

• State Management

  • Redux Toolkit
  • Zustand
  • Recoil

• Testing Tools

  1. Jest for unit testing
  2. React Testing Library
  3. Cypress for E2E testing

Responsive Grid Lists