argent-react-native-profiler

This skill is complementary to argent-react-native-optimization , not a replacement for it. 2. Tool Overview React Profiler (Hermes / React commits) Tool Purpose react-profiler-start Start CPU sampling + inject React commit-capture hook. Optional: sample_interval_us (default 100). react-profiler-stop Stop recording; stores cpuProfile + commitTree in session. react-profiler-status Call if you were interrupted in the middle of the flow, never in another scenario (debugger drop, Metro reload, pause, subagent handoff, any doubt). Returns session_status: "active" | "taken_over" | "stopped" | "no_react_runtime" . Side-effect free. react-profiler-analyze Run pipeline -> report with CPU-enriched hot commits, sorted by totalRenderMs DESC. Saves raw data to disk. react-profiler-component-source AST lookup: file, line, memoization status, 50 lines of source for a component. react-profiler-renders Live fiber walk: render counts + durations per component (no profiling session required). react-profiler-fiber-tree Live fiber walk: full component hierarchy as JSON. Drill-Down Query Tools (call after analyze) Show more