import { ApplicationRef, ComponentRef, NgZone, Type } from '@angular/core';
import { ConfirmationData, ModalConfig, ModalRef } from './modal.model';
import * as i0 from "@angular/core";
export declare class ModalService {
    private appRef;
    private zone;
    hasModalOpened: boolean;
    modals: ComponentRef<any>[];
    constructor(appRef: ApplicationRef, zone: NgZone);
    openConfirm(data: ConfirmationData): ModalRef;
    openModal(component: Type<any>, config?: ModalConfig): ModalRef;
    private closeModal;
    private getModalInstance;
    private freezeBackground;
    static ɵfac: i0.ɵɵFactoryDeclaration<ModalService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ModalService>;
}