import type { IIntersectionObservable } from './Observable.js';
export default class ElementObserver {
    #private;
    constructor(observable: IIntersectionObservable, el: HTMLElement);
    get observer(): any;
    get inView(): boolean;
    onIntersecting(isIntersecting: boolean): void;
    enterViewOnce(): Promise<unknown>;
    enterView(fn: CallableFunction): void;
    leaveViewOnce(): Promise<unknown>;
    leaveView(fn: CallableFunction): void;
    destroy(): void;
}