What problem does it solve? React Native apps often suffer from slow renders, excessive re-renders, and CPU hotspots that are hard to locate without structured profiling. This Skill runs a complete profiling workflow on Hermes-based apps, producing ranked reports that pinpoint slow components and functions. ## Core Features & Use Cases - React Commit Profiling: Start and stop CPU sampling with React commit capture, then analyze hot commits sorted by total render time with per-commit CPU breakdowns. - Drill-Down Queries: Investigate specific commits, components, call trees, time windows, and re-render cascades to find root causes before changing code. - Before/After Verification: Re-profile after applying a fix and honestly compare metrics, with session reload support for side-by-side comparison. - Use Case: A developer notices a list screen feels sluggish. They start a profiling session, scroll the list, stop and analyze, then drill into the slowest component's CPU call tree to find the expensive function, fix it, and re-profile to confirm improvement. ## Quick Start Profile my React Native app on the connected device while I scroll the main list, then show me the slowest components and their CPU hotspots.
