Proof

react-native-passkey

isSupported=false (sootsim tenant runs in a worker without DOM); create/get reject with a clear "needs top-level DOM" error so apps with passkey-optional flows take their password fallback. PasskeyError class exposed

25%

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 WebAuthn — needs DOM access. host iframe could provide this; deferred until host bridge for credential management