export default abstract class LocalStorageUtil {
    /**
     * Sets an item in local storage by key.
     * @param key the key
     * @param data the data to store
     */
    static setItem(key: string, data: any): void;
    /**
     * Retrieves an item from local storage by key.
     * @param key the key
     * @returns the item if it exists, otherwise null
     */
    static getItem(key: string): any;
    /**
     * Removes an item from local storage by key.
     * @param key the key of the item to remove
     */
    static removeItem(key: string): void;
}