import GirafeSingleton from '../../base/GirafeSingleton.js';
import { UserDataConfig } from '../configuration/girafeconfig.js';
/**
 * Manages user data storage and retrieval across different storage sources.
 * The class supports localStorage and server as storage options (server-side implementation currently not available).
 * It provides functionality to set, get, save, and delete user data while maintaining the flexibility to target specific paths
 * within the user data object.
 */
declare class UserDataManager extends GirafeSingleton {
    private readonly storageKey;
    private config;
    private allowSaveUserPreferences;
    initializeFromConfig(config: UserDataConfig): void;
    private userData?;
    private userDataPromise?;
    /**
     * Retrieves a specific part of the user data defined by the storage path.
     * @param storagePath path in the user data object to the requested value.
     * @returns the partial user data object.
     */
    getUserData(storagePath: string): Promise<unknown>;
    getFromLocalStorage(storagePath: string): any;
    private extractValue;
    private load;
    private loadFromLocalStorage;
    private loadFromServer;
    saveUserData(storagePath: string, newValue: unknown): Promise<void>;
    saveToLocalStorage(storagePath: string, newValue: unknown): void;
    private save;
    private writeToLocalStorage;
    private writeToServer;
    deleteUserData(storagePath: string): Promise<void>;
    deleteAllUserData(): Promise<void>;
    private deleteFromServer;
}
export default UserDataManager;