DefaultRecentCountryStore

Persistent RecentCountryStore with an in-memory MutableStateFlow mirror.

Backed by the platform's own small key-value store — SharedPreferences on Android, NSUserDefaults on iOS. Create it with DefaultRecentCountryStore(context) on Android, DefaultRecentCountryStore() on iOS, or rememberDefaultRecentCountryStore from common code.

Why not DataStore

This is a UI library, and a handful of ISO codes is the smallest possible piece of state. Adding androidx.datastore — plus its Okio and protobuf transitive graph — to every consumer's app to store ten two-letter strings is not a trade worth making. Both platform stores are already there, so the default store costs nothing to depend on.

The interface is what matters for hosts who disagree: an app that already uses DataStore can implement RecentCountryStore over its own store in a dozen lines and pass it in. Nothing in the library depends on this class.

All disk work happens on Dispatchers.IO; reads after construction are served from memory, so the recents section renders on the first frame instead of appearing a moment later.