/**
 * Sets an item in the local storage.
 * @param key - The key to set the item with.
 * @param value - The value to be stored. It will be converted to a string using JSON.stringify.
 * @template T - The type of the value being stored.
 */
export declare function setItem<T>(key: string, value: T): void;
/**
 * Retrieves the value associated with the specified key from the local storage.
 *
 * @param key - The key of the item to retrieve.
 * @returns The value associated with the key, or null if the key does not exist.
 */
export declare function getItem(key: string): string | null;