/**
 * Centralized logger for DuckDB MCP Node
 *
 * Prevents stdout pollution in MCP/STDIO mode by routing all logs to stderr.
 * In normal mode, uses console methods as usual.
 *
 * @packageDocumentation
 */
/**
 * Logger interface matching console methods
 */
export interface Logger {
    debug: (...args: unknown[]) => void;
    info: (...args: unknown[]) => void;
    warn: (...args: unknown[]) => void;
    error: (...args: unknown[]) => void;
    log: (...args: unknown[]) => void;
}
/**
 * Main logger instance
 *
 * Usage:
 * ```typescript
 * import { logger } from './utils/logger.js'
 *
 * logger.info('Server started')
 * logger.error('Connection failed', error)
 * ```
 */
export declare const logger: Logger;
/**
 * Check if running in MCP mode
 */
export declare function isInMCPMode(): boolean;
/**
 * Create a child logger with a specific context
 * Useful for module-specific logging
 */
export declare function createLogger(context: string): Logger;
export default logger;
//# sourceMappingURL=logger.d.ts.map