import { TemplateRef } from '@angular/core';
import { Observable, Subject } from 'rxjs';
import * as i0 from "@angular/core";
export declare class HeaderService {
    _template: Subject<TemplateRef<any>>;
    template$: Observable<TemplateRef<any>>;
    setHeaderTemplate(ref: TemplateRef<any>): void;
    getHeaderTemplate(): Observable<TemplateRef<any>>;
    static ɵfac: i0.ɵɵFactoryDeclaration<HeaderService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<HeaderService>;
}