import { BehaviorSubject } from 'rxjs';
import { ManagedComponent } from '../../models/types/managed-component.type';
import { Notification } from '../../components/notification/notification';
import { Widget } from '../../components/widget/widget';
export declare class STComponentManager {
    private static instance;
    private managedComponents;
    firstRegisteredNotificationOrWidget$: BehaviorSubject<Widget | Notification>;
    firstRegisteredNotification$: BehaviorSubject<Notification>;
    private constructor();
    static getInstance(): STComponentManager;
    register(component: ManagedComponent): Promise<void>;
    deregister(component: ManagedComponent): void;
    getFirstRegisteredNotificationOrWidget(): Notification | Widget;
    getFirstRegisteredNotification(): Widget;
}