/**
 * Database Module - Exports for persistence layer
 *
 * Usage (Python-like simplicity):
 *   import { db } from 'praisonai';
 *
 *   const agent = new Agent({
 *     instructions: "You are helpful",
 *     db: db("sqlite:./data.db"),  // URL-style string
 *     sessionId: "my-session"
 *   });
 */
export * from './types';
export { MemoryDbAdapter } from './memory-adapter';
import type { DbAdapter, DbConfig } from './types';
/**
 * Create a database adapter based on configuration
 */
export declare function createDbAdapter(config: DbConfig): DbAdapter;
/**
 * Get or create the default database adapter
 */
export declare function getDefaultDbAdapter(): DbAdapter;
/**
 * Set the default database adapter
 */
export declare function setDefaultDbAdapter(adapter: DbAdapter): void;
/**
 * Factory function for creating a database adapter
 *
 * Accepts either:
 * - URL string: db("sqlite:./data.db"), db("postgres://..."), db("redis://...")
 * - Config object: db({ type: 'sqlite', path: './data.db' })
 *
 * Examples:
 *   db("sqlite:./data.db")           // SQLite file
 *   db("postgres://localhost/mydb")  // PostgreSQL
 *   db("redis://localhost:6379")     // Redis
 *   db("memory:")                    // In-memory (default)
 *   db()                             // In-memory (default)
 */
export declare function db(configOrUrl?: string | DbConfig): DbAdapter;