open static method

Future<LegacyJsonSharedPreferencesStorage> open()

opens shared_preferences and initializes the storage; also deletes expired keys before returning

Implementation

static Future<LegacyJsonSharedPreferencesStorage> open() async {
  final sharedPreferences = await SharedPreferences.getInstance();
  final instance = LegacyJsonSharedPreferencesStorage._(sharedPreferences);
  return instance;
}