export declare class CTYStorage {
    private static storage;
    /**
    * save the value by key to localStorage
    * @param key
    * @param val
    * @returns
    */
    static SaveItem<T>(key: string, val: T): void;
    /**
    * get the value from localStorage by key
    * @param key
    * @returns {T}
    */
    static GetItem<T>(key: string): T;
    /**
    * get key
    * @param key
    * @returns {string}
    */
    private static genKey;
    /**
    * Delete the value from localStorage by key
    * @param key
    * @returns
    */
    static DeleteItem(key: string): void;
}