import type { ClaudeSession, Checkpoint, FileSnapshot, ProjectStats } from '../types/index.js';
export declare class Database {
    private db;
    private readonly dbPath;
    constructor();
    private init;
    createSession(session: Omit<ClaudeSession, 'id'>): Promise<string>;
    updateSession(id: string, updates: Partial<ClaudeSession>): Promise<void>;
    createCheckpoint(checkpoint: Omit<Checkpoint, 'id'>): Promise<string>;
    saveFileSnapshot(snapshot: Omit<FileSnapshot, 'id'>): Promise<string>;
    getActiveSession(projectPath: string): Promise<ClaudeSession | null>;
    getCheckpoints(projectPath?: string): Promise<Checkpoint[]>;
    getProjectStats(): Promise<ProjectStats[]>;
    close(): Promise<void>;
}