TLDR:
A practical, expert-level guide to frontend profiling that shows how to measure, analyze, and optimize performance using Chrome DevTools, flame graphs, React Profiler, and memory tools—while leveraging Feature-Sliced Design to make performance bottlenecks easier to detect, isolate, and fix at scale.
TLDR:
Frontend debugging is no longer just about fixing obvious errors in the browser console. In modern web applications, effective debugging requires deep understanding of execution flow, state management, side effects, and architecture. This guide walks you through professional frontend debugging techniques—from mastering Chrome DevTools and framework-specific devtools to handling production issues—and shows how Feature-Sliced Design helps teams debug complex applications systematically and at scale.