Blog

Most useMemo and useCallback calls in the wild accomplish nothing. Learn exactly when each hook works, why one unstable prop breaks the whole memoization chain, and when to just delete it.

Stop using boolean props as imperative commands. In React 19 ref is just a prop — accept it, or use useImperativeHandle to expose a clean typed API for focus, reset and validate.

HOCs didn't die with hooks. React.memo, Redux connect, and half your favorite libraries still use them. Learn to write type-safe HOCs and when to reach for the pattern.

useDebounce, useLocalStorage, useMediaQuery, and seven more custom hooks that solve the same problems in every React project — with production-ready TypeScript implementations.

React Context is great for static config but a footgun for dynamic state. Learn how to split contexts by update frequency and separate state from dispatch.

Stop adding props for every variation. Compound components let parent and children share state via Context — the pattern powering shadcn/ui, Radix UI, and every serious React UI kit.

React 18+ lets you mark state updates as non-urgent so expensive re-renders stop blocking inputs. Here's exactly when to use startTransition, useTransition, and useDeferredValue.

Learn how to isolate React rendering failures with error boundaries so one bad component never takes down your entire page.

Node.js is single-threaded — but Worker Threads let you move CPU-heavy tasks off the event loop so your server stays responsive under real load.