import { Injector } from '@angular/core';
import { WindowConfig } from './window-config';
import { Overlay } from '@angular/cdk/overlay';
import { WindowRef } from './window-ref';
import { NGXLogger } from 'ngx-logger';
export declare class WindowService {
    private injector;
    private overlay;
    private logger;
    constructor(injector: Injector, overlay: Overlay, logger: NGXLogger);
    open<T>(config?: WindowConfig<any, T>): WindowRef;
    private createOverlay;
    private attachDialogContainer;
    private getOverlayConfig;
}