import * as i0 from "@angular/core";
export declare class BabylonEngineStateService {
    private queryParamsSource;
    currentQueryParams$: import("rxjs").Observable<string>;
    constructor();
    setQueryParams(params: string): void;
    getQueryParamsValue(): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<BabylonEngineStateService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<BabylonEngineStateService>;
}