import { Destroyable, IDestroyable } from 'destroyable';
import { Observable } from 'rxjs/internal/Observable';
import { Subject } from 'rxjs/internal/Subject';
import { Touch } from '../touch/Touch';
export declare class Multitouch<TElement> extends Destroyable implements IDestroyable {
    element?: TElement | undefined;
    readonly id: number;
    readonly uuid: string;
    ongoingTouches: Touch[];
    readonly touches: Subject<Touch>;
    constructor(element?: TElement | undefined);
    toString(): string;
    addTouch(touch: Touch): void;
    /**
     * Get RxJS Observable array which every item is list of touches
     * For example when user scale object by two fingers it will be:
     * [[finger1]],[[finger1,finger2]],[[finger1]]
     */
    get ongoingTouchesChanges(): Observable<Touch[]>;
    destroy(): Promise<void>;
}