frontend-performance

To fix slow load times and large bundle sizes in a React application, establish baselines for Core Web Vitals like LCP and TTFB, then use a hypothesis-driven workflow with profiling tools like Lighthouse to diagnose network and parse layer bottlenecks.

The best way to audit Core Web Vitals for a TypeScript app is through measurement-driven auditing that establishes baselines for LCP, INP, CLS, and TTFB before applying optimizations across network, parse, render, and interaction layers.

Component memoization improves React rendering performance by targeting the render and interaction layers. It prevents unnecessary re-renders during stuttering interactions or janky animations, guided by systematic profiling using React DevTools.

Poor INP and layout shifts in a React app stem from unoptimized interaction and render layers. Diagnose these Core Web Vitals issues by profiling component rendering and virtualization workflows to identify and resolve the bottleneck.

Yes, React DevTools is required for frontend performance optimization. It enables systematic profiling and measurement of the render and interaction layers, supporting a hypothesis-driven workflow to resolve janky animations and slow interactions.