Proof

expo-localization

comprehensive — backed by Intl and navigator.language; locale listeners are noop

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 (18)

getLocalesgetCalendarsuseLocalesuseCalendarslocalelocalestimezoneisoCurrencyCodesregionisRTLisMetriccurrencydecimalSeparatordigitGroupingSeparatorgetLocalizationAsyncaddLocaleListeneraddCalendarListenerremoveSubscription

Missing

OS-level locale change events (browser limitation; addLocaleListener is a noop)