import { DialogComponent } from './dialog.component';
import * as i0 from "@angular/core";
export declare class DialogStackService {
    private readonly _document;
    private static _dialogStack;
    constructor(_document: any);
    removeDialog(dialog: DialogComponent): void;
    addDialog(dialog: DialogComponent): void;
    add(dialog: DialogComponent): void;
    closeTopMostDialog(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DialogStackService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DialogStackService>;
}