Proof

@swan-io/react-native-browser

upstream package JS runs unchanged against RNSwanBrowser native module backed by window.open

80%

API coverage

No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.

Working (3)

TurboModuleRegistry RNSwanBrowser provides open/closelistener bookkeepingpopup URL opening; upstream openBrowser/closeBrowser/processColor/onClose wrapper stays in the app bundle

Missing (4)

real SFSafariViewController/Chrome Custom Tabs UInative modal transition behaviorCustom Tabs package selection/fallbacksOS-level user dismissal detection