1582 articles
TanStack Query (formerly React Query) is the gold standard for managing server state in React apps. This guide covers useQuery, useMutation, caching, invalidation, and integration with Next.js App Router — with real examples.
TypeScript makes React components self-documenting and catches entire classes of bugs before runtime. This guide covers typing components, hooks, event handlers, generics, and common patterns that senior engineers use every day.
React re-renders are fast but not free. Learn when to apply React.memo, useMemo, and useCallback — and more importantly, when NOT to — using the React Profiler to guide decisions based on real measurements.
Vitest and React Testing Library together form the modern testing stack for React applications. This guide covers setup, writing component tests, user interaction testing, mocking API calls, and best practices for maintainable test suites.
Compound components, Higher-Order Components, and Render Props are foundational React patterns for flexible, reusable component design. This guide explains when to use each, shows real implementations, and compares them against modern custom hook alternatives.