/**
 * @license
 * Copyright 2023 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 */
import type { ChatbotStorage } from '../core/types.js';
/**
 * In-memory storage (data lost on page refresh)
 */
export declare class MemoryStorage implements ChatbotStorage {
    private store;
    save(key: string, data: any): Promise<void>;
    load(key: string): Promise<any>;
    remove(key: string): Promise<void>;
    clear(): Promise<void>;
    has(key: string): Promise<boolean>;
}
/**
 * LocalStorage-based storage (persists across page refreshes)
 */
export declare class LocalStorageAdapter implements ChatbotStorage {
    save(key: string, data: any): Promise<void>;
    load(key: string): Promise<any>;
    remove(key: string): Promise<void>;
    clear(): Promise<void>;
    has(key: string): Promise<boolean>;
}
/**
 * IndexedDB storage (for larger data, better performance)
 */
export declare class IndexedDBStorage implements ChatbotStorage {
    private dbName;
    private storeName;
    private db?;
    constructor(dbName?: string, storeName?: string);
    private getDB;
    save(key: string, data: any): Promise<void>;
    load(key: string): Promise<any>;
    remove(key: string): Promise<void>;
    clear(): Promise<void>;
    has(key: string): Promise<boolean>;
}
//# sourceMappingURL=storage-implementations.d.ts.map