import { AfterContentInit, ElementRef, EventEmitter, NgZone, OnDestroy, OnInit, Renderer2 } from '@angular/core';
export declare class CollapseAnimationDirective implements OnInit, AfterContentInit, OnDestroy {
    private elementRef;
    private ngZone;
    private renderer2;
    private firstStart;
    private isCollapsed;
    private lastIsCollapsed;
    private transitioning;
    private listener;
    collapseAnimationDuration: number;
    collapseAnimationTiming: string;
    _isCollapsed: boolean;
    startEventEmitter: EventEmitter<any>;
    doneEventEmitter: EventEmitter<any>;
    /**
     * @method constructor
     * @param elementRef [description]
     * @param ngZone     [description]
     * @param renderer2  [description]
     */
    constructor(elementRef: ElementRef, ngZone: NgZone, renderer2: Renderer2);
    /**
     * @method ngOnInit
     */
    ngOnInit(): void;
    /**
     * @method ngAfterContentInit
     */
    ngAfterContentInit(): void;
    /**
     * [ngOnDestroy description]
     * @method ngOnDestroy
     * @return [description]
     */
    ngOnDestroy(): void;
    /**
     * [subscriptions description]
     * @method subscriptions
     */
    private subscriptions;
    /**
     * [unCollapse description]
     * @method unCollapse
     */
    private unCollapse;
    /**
     * [collapse description]
     * @method collapse
     */
    private collapse;
    private emit;
}