import * as i0 from "@angular/core";
export declare class OverlayManager {
    static componentHierarchyMap: Map<string, string[]>;
    static getParentId(childId: string): string | null;
    createOverlay(targetElement: HTMLElement, entry: any): HTMLElement;
    private setupOverlayUpdate;
    private throttle;
    private hideExistingOverlay;
    addToComponentHierarchyMap(parentId: string, childId: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<OverlayManager, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<OverlayManager>;
}