@interface BookDataStore.ReadingHistoryDataStore : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ updateCollector;
    void /* unknown type, empty encoding */ modelProvider;
    void /* unknown type, empty encoding */ config;
    void /* unknown type, empty encoding */ currentUserDefaults;
    void /* unknown type, empty encoding */ currentDate;
    void /* unknown type, empty encoding */ streakDayGoal;
    void /* unknown type, empty encoding */ queue;
    void /* unknown type, empty encoding */ clearOnInitialLoad;
    void /* unknown type, empty encoding */ _state;
    void /* unknown type, empty encoding */ lastModelChange;
    void /* unknown type, empty encoding */ lastModelChangeObservableTransaction;
    void /* unknown type, empty encoding */ transactionProvider;
}

- (void)_handleSignificantDateChange:(id)a0;

@end