import { LitElementStateService, SubscribeStateFromElementOptions } from './index.js';
export declare const isObject: (item: any) => any;
export declare const deepCopy: (obj: any) => any;
export declare const deepCompare: (one: any, two: any) => boolean | undefined;
export declare const subscribeOptionsFromDefaultOrParams: (options: SubscribeStateFromElementOptions | undefined, service: LitElementStateService<any>) => SubscribeStateFromElementOptions;
export declare const isExceptionFromDeepReduce: (obj: any) => boolean;
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