import type { NodeSnapshot, SnapshotQuery, SnapshotStore } from './types.js';
export declare class FileSnapshotStore implements SnapshotStore {
    private readonly baseDir;
    constructor(directory?: string);
    private sessionFile;
    save(snapshot: NodeSnapshot): Promise<void>;
    fetch(sessionId: string, query?: SnapshotQuery): Promise<NodeSnapshot[]>;
    clear(sessionId: string): Promise<void>;
    listSessions(): Promise<string[]>;
}