lazy-loading

The Intersection Observer API efficiently detects when elements enter/exit the viewport, enabling lazy loading, infinite scroll, and analytics without expensive scroll listeners. I create observers with thresholds defining when callbacks trigger—0.0 m

Code splitting routes reduces initial bundle size and improves load times. React's lazy function dynamically imports components when routes are accessed. Wrapped in Suspense, lazy components show fallback UI while loading. I group related routes into