Proof
No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.react-native-performance
published JavaScript runs unchanged over the lazily registered RNPerformanceManager event boundary80%
API coverageWorking (5)
published performance entry classes and toJSONmark/measure/metric clocks and cleanupPerformanceObserver buffering and frame deliveryXHR resource logger enable/disable and controlled completion conversionnative mark and metric event projection
Missing
native startup timing and bundle-size producers are not connected; real network resource-entry collection is unproved; no RN startup timestamps are synthesized from JavaScript clocks