import 'localforage';
import { AnyT } from '../../definitions.interface';
import { BaseStorage } from '../base-storage.service';
export declare class DatabaseStorage extends BaseStorage {
    private instance;
    /**
     * @stable [28.07.2019]
     * @param {string} prefix
     * @param {LocalForage} instance
     */
    constructor(instance: LocalForage, prefix: string);
    /**
     * @stable [29.07.2019]
     * @param {string} key
     * @param {AnyT} value
     * @returns {Promise<boolean>}
     */
    set(key: string, value: AnyT): Promise<boolean>;
    /**
     * @stable [28.07.2019]
     * @param {string} key
     * @returns {Promise<AnyT>}
     */
    get(key: string): Promise<AnyT>;
    /**
     * @stable [28.07.2019]
     * @param {string} key
     * @param {boolean} noPrefix
     * @returns {Promise<boolean>}
     */
    remove(key: string, noPrefix?: boolean): Promise<void>;
    /**
     * @stable [25.09.2019]
     * @param {(value: AnyT, key: string) => void} callback
     */
    each(callback: (value: AnyT, key: string) => void): void;
}