import { ElementRef, OnDestroy, AfterViewInit } from '@angular/core';
import 'jquery-nice-select';
export declare class NgNiceSelectDirective implements AfterViewInit, OnDestroy {
    private el;
    observer: MutationObserver;
    constructor(el: ElementRef);
    ngAfterViewInit(): void;
    attachAngularChange(): void;
    attachObserver(): void;
    detachObserver(): void;
    onChanges(): void;
    ngOnDestroy(): void;
}