import { OnInit, ElementRef } from '@angular/core';
import { CollapseContainerDirective } from './collapse-container.directive';
import { CollapseBodyDirective } from './collapse-body.directive';
import * as i0 from "@angular/core";
export declare class CollapseHeaderDirective extends CollapseBodyDirective implements OnInit {
    private el;
    private container;
    headerKey: string;
    constructor(el: ElementRef, container: CollapseContainerDirective);
    ngOnInit(): void;
    onClick(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<CollapseHeaderDirective, [null, { optional: true; }]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<CollapseHeaderDirective, ".collapse-header", never, { "headerKey": "header-key"; }, {}, never>;
}
//# sourceMappingURL=collapse-header.directive.d.ts.map