import { ConnectionError } from './error-handling/ConnectionError.js';
import { DatabaseError } from './error-handling/DatabaseError.js';
import { MigrationError } from './error-handling/MigrationError.js';
import { QueryError } from './error-handling/QueryError.js';
import { TransactionError } from './error-handling/TransactionError.js';
import { DatabaseConfig } from './interfaces/DatabaseConfig.js';
/**
 * Core database client interface that all database implementations must follow.
 * This ensures consistency between PostgreSQL, MySQL, and future database types.
 */
export type { DatabaseClient } from './interfaces/DatabaseClient.js';
/**
 * SQL adapter interface for adapting SQL queries to specific database types.
 * This allows for consistent query handling across different databases.
 */
export type { SqlAdapter } from './interfaces/SqlAdapter.js';
/**
 * Transaction interface - common methods for all database types
 */
export type { DatabaseTransaction } from './interfaces/DatabaseTransaction.js';
/**
 * Alias for DatabaseTransaction (for backward compatibility)
 */
export type { DatabaseTransaction as Transaction } from './interfaces/DatabaseTransaction.js';
/**
 * Database factory interface for creating database instances
 */
export type { DatabaseFactory } from './interfaces/DatabaseFactory.js';
/**
 * Migration manager interface for database schema versioning
 */
export type { MigrationManager } from './interfaces/MigrationManager.js';
/**
 * Configuration validation interface
 */
export type { ConfigValidator } from './interfaces/ConfigValidator.js';
/**
 * Base transaction class that provides common transaction logic
 */
export { BaseTransaction } from './base/BaseTransaction.js';
/**
 * Database adapter for switching between database types
 */
export { DatabaseAdapter } from './adapters/DatabaseAdapter.js';
export { BaseSqlAdapter } from './adapters/BaseSqlAdapter.js';
export type { AdapterConfig, DatabaseType } from './adapters/DatabaseAdapter.js';
/**
 * Generic database configuration that can be extended by specific database types
 */
export type { DatabaseConfig } from './interfaces/DatabaseConfig.js';
/**
 * Standard query result structure
 */
export type { QueryResult } from './interfaces/QueryResult.js';
/**
 * Health check result
 */
export type { HealthCheckResult } from './interfaces/HealthCheckResult.js';
/**
 * Migration interface
 */
export type { Migration } from './interfaces/Migration.js';
/**
 * Migration status
 */
export type { MigrationStatus } from './interfaces/MigrationStatus.js';
/**
 * Alias for MigrationStatus (for backward compatibility)
 */
export type { MigrationStatus as MigrationRecord } from './interfaces/MigrationStatus.js';
/**
 * Query parameters type
 */
export type { QueryParams } from './custom-types/QueryParams.js';
/**
 * Transaction callback type
 */
export type { TransactionCallback } from './custom-types/TransactionCallback.js';
/**
 * Base error class for database operations
 */
export { DatabaseError } from './error-handling/DatabaseError.js';
/**
 * Connection error specifically for connection-related issues
 */
export { ConnectionError } from './error-handling/ConnectionError.js';
/**
 * Query error for SQL execution issues
 */
export { QueryError } from './error-handling/QueryError.js';
/**
 * Transaction error for transaction-related issues
 */
export { TransactionError } from './error-handling/TransactionError.js';
/**
 * Migration error for migration-related issues
 */
export { MigrationError } from './error-handling/MigrationError.js';
/**
 * Type guards for error checking
 */
export declare const isDatabaseError: (error: any) => error is DatabaseError;
export declare const isConnectionError: (error: any) => error is ConnectionError;
export declare const isQueryError: (error: any) => error is QueryError;
export declare const isTransactionError: (error: any) => error is TransactionError;
export declare const isMigrationError: (error: any) => error is MigrationError;
/**
 * Validation helper for database configuration
 */
export declare const validateDatabaseConfig: (config: any) => config is DatabaseConfig;
/**
 * Helper to create a connection key for caching
 */
export declare const createConnectionKey: (config: DatabaseConfig) => string;
/**
 * Helper to sanitize config for logging (removes password)
 */
export declare const sanitizeConfigForLogging: (config: DatabaseConfig) => Partial<DatabaseConfig>;
/**
 * Default pool configuration
 */
export declare const DEFAULT_POOL_CONFIG: {
    readonly max: 10;
    readonly min: 2;
    readonly connectionTimeoutMillis: 60000;
    readonly idleTimeoutMillis: 30000;
    readonly acquireTimeout: 60000;
    readonly timeout: 60000;
};
/**
 * Migration file pattern
 */
export declare const MIGRATION_FILE_PATTERN: RegExp;
/**
 * Supported database types
 */
export type SupportedDatabases = 'postgresql' | 'mysql';
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