import { ApplicationRef, Injector, ComponentFactoryResolver, Renderer2 } from '@angular/core';
import { PanelOptions, PanelOverlayRef } from '../interfaces';
import * as i0 from "@angular/core";
export declare class PanelOverlayService {
    private applicationRef;
    private injector;
    private componentFactoryResolver;
    private document;
    /***************
     * Constructor
     */
    constructor(applicationRef: ApplicationRef, injector: Injector, componentFactoryResolver: ComponentFactoryResolver, document: any);
    /***************
     * Private methods
     */
    private createPortal;
    private createComponent;
    /***************
     * Public
     */
    open(options: PanelOptions, renderer: Renderer2): PanelOverlayRef;
    static ɵfac: i0.ɵɵFactoryDeclaration<PanelOverlayService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<PanelOverlayService>;
}