import { StorageType } from "./core";
export declare function setJSONItem<T>(key: string, value: T, storage?: StorageType): void;
export declare function getJSONItem<T>(key: string, storage?: StorageType): T | null;
export declare function updateJSONItem<T>(key: string, updateFn: (currentValue: T | null) => T, storage?: StorageType): void;