import { BehaviorSubject } from 'rxjs/internal/BehaviorSubject';
import * as i0 from "@angular/core";
export declare class PopupService {
    header: string;
    message: string;
    type: 'info' | 'error';
    showPopup: BehaviorSubject<boolean>;
    visible$: import("rxjs").Observable<boolean>;
    constructor();
    open(content: any): void;
    close(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<PopupService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<PopupService>;
}