import { ElementRef, OnInit, Renderer2 } from '@angular/core';
export declare class DraggableDirective implements OnInit {
    private el;
    private renderer2;
    stop: (event: any, ui: any) => void;
    start: (event: any, ui: any) => void;
    drag: (event: any, ui: any) => void;
    stackSelector: string;
    appendTo: string;
    helper: any;
    constructor(el: ElementRef, renderer2: Renderer2);
    ngOnInit(): void;
}