import { Subject } from 'rxjs';
import { Service } from '../common';
import { AnyNotification } from './classes';
import { Notification } from './interfaces';
export declare class NotificationService extends Service {
    readonly notification$: Subject<AnyNotification>;
    private subscribed;
    private walletSubscription;
    private accountSubscription;
    private subscribedAccountAddress;
    subscribeNotifications(): Subject<Notification>;
    protected onDestroy(): void;
    private createGraphQLSubscription;
}