import { OnDestroy } from '@angular/core';
import { Observable } from 'rxjs';
import { Option } from './../../index';
interface EventSource {
    on(event: string, listener: (eventName: string, payload: any) => void, options?: Option): void;
    off(event: string, listener: (eventName: string, payload: any) => void): void;
}
export declare class BaseEventService implements OnDestroy {
    protected subscriptions: Array<() => void>;
    protected fromEventSource<T = unknown>(source: EventSource, event: string, options?: Option): Observable<T>;
    ngOnDestroy(): void;
}
export {};