import { ElementRef, EventEmitter, OnChanges, SimpleChanges } from "@angular/core";
/** A helper component for collapsing any content placed inside of it */
export declare class CollapseComponent implements OnChanges {
    /** Collapse toggle */
    toggle?: boolean;
    /** Element class */
    class?: string;
    /** Element id */
    id?: string;
    /** This method will be triggered after the transition has ended */
    transitionEnd: EventEmitter<void>;
    collapseRef: ElementRef<HTMLDivElement>;
    display: string;
    height: string;
    opacity: "0" | "1";
    ngOnChanges(changes: SimpleChanges): void;
    /** Collapse the content */
    collapse(): void;
    /** Expand the content */
    expand(): void;
    /**
     * An event handler triggered after collapse/expand transition ends
     * @param e The transition event
     */
    afterTransition(e: TransitionEvent): void;
}