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