import PersistenceService from './persistenceService';
import NullPersistenceService from './nullPersistenceService';
import InMemoryPersistenceService from './inMemoryPersistenceService';
import LocalStoragePersistenceService from './localStoragePersistenceService';
export { NullPersistenceService, InMemoryPersistenceService, LocalStoragePersistenceService };
export default PersistenceService;