import { IKVStore } from "./kv-store";
/**
 *
 *
 * @class InMemoryKVStore
 * @description Save data using a Key/Value relationship. This object save information in memory, that means if the application is closed,
 * the saved information will be deleted
 */
export declare class InMemoryKVStore implements IKVStore {
    private readonly localStorage;
    /**
     * @description Associates the specified value with the specified key and save this association in memory.
     * @param {string} key - key with which the specified value is to be associated
     * @param {any} value - value to be associated with the specified key
     * @memberof InMemoryKVStore
     */
    add(key: string, value: any): void;
    /**
     * @description Returns the value to which the specified key is mapped.
     * @param {string} key - the key whose associated value is to be returned
     * @returns {any | undefined} - Key or undefined.
     * @memberof InMemoryKVStore
     */
    get(key: string): any | undefined;
    /**
     * @description Returns a list with all the saved value
     * @returns {any[]} - An array of items.
     */
    getItems(): any[];
    /**
     * @description Verifies if the object has an association identified with a key.
     * @param {string} key - key whose mapping is to be checked from the memory
     * @returns {boolean} - True or false if the key exists in the local storage.
     * @memberof InMemoryKVStore
     */
    has(key: string): boolean;
    /**
     * @description Removes the mapping for a key from this object if it is present.
     * @param {string} key - key whose mapping is to be removed from the memory
     * @returns {boolean} - True or false if the item was removed or not.
     * @memberof InMemoryKVStore
     */
    remove(key: string): boolean;
    /**
     * @description Removes all of the mappings from this object.
     */
    clear(): void;
}