React TypeScript Interview Prep Guide 2026 | Hooks React 19 Performance Top 20 QA

Stop guessing what interviewers want to hear. This 11-page PDF guide covers everything a mid-level React developer needs to walk into an interview with confidence.

✅ TypeScript Essentials — Type vs Interface, Generics, Utility Types, Discriminated Unions
✅ React Core — Virtual DOM, Fiber, Props typing, Controlled vs Uncontrolled
✅ Hooks Deep Dive — useEffect traps, useMemo vs useCallback, useRef, Custom Hooks
✅ React 19 — Compiler, Actions API, useOptimistic, Server Components
✅ Performance — Code splitting, Re-render optimization, Zustand vs Redux vs Context
✅ Top 20 Q&A — Quick-fire answers for the night before your interview

Every topic includes a real interview answer written the way a senior developer actually speaks — not textbook definitions. Updated for 2026.

📄 11 pages · PDF · Instant download