import { FExternalItemBase } from './f-external-item-base';
import * as i0 from "@angular/core";
export declare class FExternalItemService {
    private _items;
    registerItem(item: FExternalItemBase): void;
    getItem(element: HTMLElement | SVGElement): FExternalItemBase | undefined;
    removeItem(item: FExternalItemBase): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<FExternalItemService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<FExternalItemService>;
}