/**
 * IndexedDB Service - Browser IndexedDB storage implementation
 * NOTE: Not yet integrated into DataContext - planned for future release
 */
/**
 * Wrapper class for working with IndexedDB
 * Provides async storage for larger data sets beyond localStorage limits
 */
export declare class IndexedDBService {
    #private;
    constructor(databaseName?: string, version?: number, objectStoreName?: string);
    /**
     * Stores data in IndexedDB
     * @param key - The key to store the data under
     * @param value - The value to store
     */
    save<T>(key: string, value: T): Promise<void>;
    /**
     * Retrieves data from IndexedDB
     * @param key - The key to retrieve
     * @returns The stored value or null if not found
     */
    retrieve<T>(key: string): Promise<T | null>;
    /**
     * Removes data from IndexedDB
     * @param key - The key to remove
     */
    remove(key: string): Promise<void>;
    /**
     * Clears all data from the object store
     */
    clear(): Promise<void>;
    /**
     * Gets all keys from the object store
     * @returns Array of all keys
     */
    getAllKeys(): Promise<string[]>;
}
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