This content originally appeared on DEV Community and was authored by Manu Kumar Pal
Hey devs! đź‘‹
React keeps evolving fast — and so should the way we build with it.
If you’re still writing React like it’s 2019, you’re probably missing out on performance, readability, and scalability.
âś… 1. Embrace Functional Components + Hooks
⚡ Class components are legacy now.
⚡ Hooks (useState, useEffect, useReducer, useMemo, useCallback) = concise, powerful, future-proof.
âś… 2. Keep Components Small & Focused
đź› One component = one responsibility.
đź› Easier to debug, test, and reuse.
💡 Rule of thumb → If >200 lines, split it.
âś… 3. Use React Query (TanStack Query) for Data Fetching
🔄 No more endless useEffect + fetch.
🔄 Handles caching, retries, background updates, pagination.
âś… 4. Leverage Suspense & Concurrent Features
🚀 React 18’s Suspense + concurrent rendering = smoother apps.
🚀 Stream UI while waiting for data.
âś… 5. Optimize Re-renders
⚠️ Unnecessary re-renders = slow apps.
âś” Use React.memo for pure components.
âś” Use useCallback & useMemo for heavy calculations.
âś… 6. Use Error Boundaries
🛡 Prevent full app crashes from runtime errors.
🛡 Provide fallback UI instead of white screens.
âś… 7. Stick to a Consistent Folder Structure
đź“‚ Organize by feature/module, not just type.
Example:
/features
/auth
Login.tsx
authSlice.ts
AuthAPI.ts
Keeps projects scalable & maintainable.
âś… 8. Type Your Code (TS > JS)
đź“Ś TypeScript = fewer bugs + better autocomplete.
đź“Ś Industry standard for React in 2025.
âś… 9. Write Tests (at least for critical flows)
🧪 Don’t skip testing!
✔ Jest → unit tests
✔ React Testing Library → UI behavior
✔ Cypress → end-to-end
âś… 10. Use Performance Monitoring & Profiling
đź“Š React DevTools Profiler
đź“Š Sentry / LogRocket for error & performance monitoring
🚀 Wrap-Up
React in 2025 isn’t just about making it work — it’s about making it scalable, fast & reliable.
👉 What’s one React best practice you never ignore? Drop it below!
This content originally appeared on DEV Community and was authored by Manu Kumar Pal
Manu Kumar Pal | Sciencx (2025-09-12T08:35:56+00:00) 🔥10 React Best Practices You Can’t Ignore in 2025. Retrieved from https://www.scien.cx/2025/09/12/%f0%9f%94%a510-react-best-practices-you-cant-ignore-in-2025/
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