Great React applications start with great component design. In this post, I share patterns and principles that have helped me build maintainable, reusable components.
Composition Over Inheritance
React favors composition over inheritance. Instead of creating deep component hierarchies, build small, focused components that can be composed together.
The Single Responsibility Principle
Each component should do one thing well. If a component grows too complex, break it down into smaller sub-components.
Custom Hooks for Logic Reuse
Extract shared logic into custom hooks rather than HOCs or render props.
function useDebounce<T>(value: T, delay: number): T {
const [debouncedValue, setDebouncedValue] = useState(value);
useEffect(() => {
const timer = setTimeout(() => setDebouncedValue(value), delay);
return () => clearTimeout(timer);
}, [value, delay]);
return debouncedValue;
}