/**
 * Storage service interface to interact with the storage.
 *
 * @public
 */
export interface StorageService {
    /**
     * Inserts a new item in the storage.
     *
     * @param key - The key of the item.
     * @param item - The item itself.
     * @param ttlInMs - The TTL (Time To Live) of the item in the storage.
     *
     * @public
     */
    setItem(key: string, item: any, ttlInMs?: number): void;
    /**
     * Retrieves an item from the storage by its key.
     *
     * @param key - The key of the item to search.
     * @returns The removed item.
     *
     * @public
     */
    getItem<Item = any>(key: string): Item | null;
    /**
     * Removes an item in the storage find by its key.
     *
     * @param key - The key of the item to search.
     * @returns The removed item.
     *
     * @public
     */
    removeItem<Item = any>(key: string): Item | null;
    /**
     * Removes all the entries in the storage.
     *
     * @public
     */
    clear(): number;
}