Writing about development and technology.
Your app starts fast but slows to a crawl after 10 minutes. Learn to find and fix memory leaks using Chrome DevTools Memory tab.
Your app works perfectly on localhost but crashes in production. Set up Sentry and error tracking to catch bugs before users complain.
That wall of red text in your console isn't random noise. Learn to read stack traces and find bugs in seconds, not hours.
Stop guessing why your React app is slow. React DevTools Profiler shows exactly which components re-render and why.
When your API returns unexpected data, the Network tab is your best friend. Learn to inspect requests, responses, headers, and timing.
You don't need 100 console.logs to find a bug. Learn to use browser debugger, breakpoints, and watch expressions effectively.
Stop firing API calls on every keystroke and scroll event. A practical guide to debounce and throttle with real-world examples.
Editing a modal inside a dashboard requires 5 clicks to see changes? Isolate your UI with Storybook and develop components 10x faster.
One typo in a component crashes the entire page? Learn how to use Error Boundaries to isolate crashes and show fallback UIs gracefully.
Trusted TypeScript but got crashed by runtime data? Learn why you need 'Runtime Validation' and how to use Zod to secure your data layer.
Component growing too large? Logic mixed with UI? Learn how to extract business logic into Custom Hooks for cleaner, testable code.
Every new feature bloats your JS bundle. Learn practical Code Splitting, Tree Shaking, and Dynamic Import techniques to keep your app fast and lightweight.
Obsessively wrapping everything in `useMemo`? It might be hurting your performance. Learn the hidden costs of memoization and when to actually use it.
Managing API state with `isLoading`, `isError`, `data`? Learn how Discriminated Unions prevent 'impossible states' and simplify your logic.
Put everything in one `UserContext`? Bad move. Learn how a single update re-renders the entire app and how to optimize using Context Splitting and Selectors.
Your beautiful hero image killed the LCP score? Understand how `next/image` optimizes format (WebP/AVIF), resizing, and layouts. Deep dive into `sizes` prop and `blurDataURL`.
Implementing infinite scroll with scroll listeners kills performance. Learn how to refactor with Intersection Observer API to reduce CPU usage by 90%.
Confused by `<T>` in TypeScript? Learn Generics using the 'Transparent Sticker' analogy. Understand why it's safer than `any` and how to create flexible, reusable components.
Using 'as' to silence errors? It's lying to the compiler. Learn why Type Assertions cause runtime crashes and how to use Type Guards instead.
Installed the package, but Node still says 'Cannot find module'? Debugging strategies for package.json exports, file extensions, and monorepo linking issues.
