import { ApplicationRef, ComponentFactoryResolver, InjectionToken, Injector, Type } from '@angular/core';
import { DialogStackService } from './dialog-stack.service';
import { DialogComponent } from './dialog.component';
import * as i0 from "@angular/core";
export declare const DIALOG_DATA: InjectionToken<any>;
export declare class DialogService {
    private readonly _componentFactoryResolver;
    private readonly _appRef;
    private readonly _injector;
    private readonly _dialogStackService;
    constructor(_componentFactoryResolver: ComponentFactoryResolver, _appRef: ApplicationRef, _injector: Injector, _dialogStackService: DialogStackService);
    _internalOpen<T extends DialogComponent>(dialogType: Type<T>, customInjectionTokens: WeakMap<any, any>): T;
    open<T extends DialogComponent>(dialogType: Type<T>, data?: any): T;
    static ɵfac: i0.ɵɵFactoryDeclaration<DialogService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DialogService>;
}