import { Observable } from 'rxjs';
import { ɵDynamicWindowRefModel } from '../classes';
import * as i0 from "@angular/core";
/** @internal */
export declare class ɵWindowReferencesState {
    get data$(): Observable<ɵDynamicWindowRefModel[]>;
    get data(): ɵDynamicWindowRefModel[];
    private readonly _data$;
    private readonly windowRefMap;
    getById(id: string): ɵDynamicWindowRefModel;
    add(windowRef: ɵDynamicWindowRefModel): void;
    remove(windowRef: ɵDynamicWindowRefModel): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ɵWindowReferencesState, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ɵWindowReferencesState>;
}