/**
 * 通过key从localStorage缓存中获取数据
 * @param {string} key key值
 * @returns {string} 返回数据
 */
export declare function getLocalStorage(key: string): string | undefined;
/**
 * 设置localStorage缓存数据
 * @param {string} key key值
 * @param {string} value value值
 */
export declare function setLocalStorage(key: string, value: string): void;
/**
 * 通过key从localStorage缓存中删除数据
 * @param {string} key key值
 */
export declare function removeLocalStorage(key: string): void;
/**
 * 清空localStorage缓存中所有数据
 */
export declare function clearLocalStorage(): void;