Proof

@bugsnag/react-native-performance

performance-analytics SDK with full noop surface per the docs/compat-scoring.md rule — start/startSpan/startNavigationSpan return noop spans; delivery intentionally absent in browser preview.
95%
API coverage
No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.
Working—
Missing
no spans delivered — same constraint as every performance-analytics SDK in browser preview