import type { IHistoryStorage, HistoryEntry } from '../types';
export declare class MemoryHistoryStorage implements IHistoryStorage {
    private storage;
    load(key: string): Promise<HistoryEntry[]>;
    save(key: string, entries: HistoryEntry[]): Promise<void>;
    delete(key: string): Promise<void>;
    listKeys(): Promise<string[]>;
    destroy(): Promise<void>;
}