
Detect React performance issues with code & browser analysis
React Doctor is a zero-config CLI that combines AST-based static analysis with real-browser profiling to help identify React performance issues. It detects potential code-level problems and measures Core Web Vitals, including LCP, FCP, CLS, and INP, alongside TTFB. Supports React projects using Vite, Next.js, and Create React App.
Pace needs two or more snapshots. This launch has 1, so velocity and momentum read as unmeasured rather than zero.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.