/**
 * Logger Utility
 *
 * Flexible logging with:
 * - Level-based filtering (debug, info, warn, error)
 * - Optional file-based logging
 * - Silent mode for MCP/production
 * - Prefix support
 */
import type { LogLevel, LoggerOptions } from './types.js';
export declare class Logger {
    private level;
    private prefix;
    private silent;
    private logFilePath;
    constructor(options?: LoggerOptions);
    /**
     * Check if a log level should be output
     */
    private shouldLog;
    /**
     * Format log message with timestamp
     */
    private formatMessage;
    /**
     * Write to log file (async, non-blocking)
     */
    private writeToFile;
    /**
     * Log a message at specified level
     */
    log(level: LogLevel, message: string): void;
    debug(message: string): void;
    info(message: string): void;
    warn(message: string): void;
    error(message: string, error?: Error): void;
    /**
     * Set log level
     */
    setLevel(level: LogLevel): void;
    /**
     * Set silent mode
     */
    setSilent(silent: boolean): void;
    /**
     * Create a child logger with prefix
     */
    child(prefix: string): Logger;
}
/**
 * Create a new logger instance
 */
export declare function createLogger(options?: LoggerOptions): Logger;
/**
 * Get or create the default logger
 */
export declare function getLogger(): Logger;
export { LogLevel, LoggerOptions };
//# sourceMappingURL=logger.d.ts.map