import { OverlayOptions } from './types';
declare function getTopOverlayOptions(): OverlayOptions | undefined;
export declare const OverlayManager: Readonly<{
    count(): number;
    addOverlay(options: OverlayOptions): void;
    removeOverlay(options: OverlayOptions): void;
    getTopOverlayOptions: typeof getTopOverlayOptions;
}>;
export {};