/**
 * Logging system for Amazon Seller MCP Client
 *
 * This file contains the logging system implementation, including:
 * - Configurable logging levels
 * - Sensitive data redaction
 * - Log formatting
 */
import winston from 'winston';
import { LogMetadata, HttpRequest, HttpResponse } from '../types/common.js';
/**
 * Log levels
 */
export declare enum LogLevel {
    ERROR = "error",
    WARN = "warn",
    INFO = "info",
    HTTP = "http",
    DEBUG = "debug"
}
/**
 * Logger configuration options
 */
export interface LoggerConfig {
    /**
     * Log level
     * @default 'info'
     */
    level?: LogLevel;
    /**
     * Whether to log to console
     * @default true
     */
    console?: boolean;
    /**
     * File path to log to
     * @default undefined (no file logging)
     */
    filePath?: string;
    /**
     * Whether to redact sensitive data
     * @default true
     */
    redactSensitiveData?: boolean;
    /**
     * Custom redaction patterns
     * Each key is a field name to redact, and the value is the pattern to match
     */
    redactionPatterns?: Record<string, RegExp>;
    /**
     * Custom formatter function
     */
    formatter?: winston.Logform.Format;
}
/**
 * Redact sensitive data from log messages
 *
 * @param message Log message
 * @param patterns Redaction patterns
 * @returns Redacted message
 */
export declare function redactSensitiveData(message: string, patterns?: Record<string, RegExp>): string;
/**
 * Create a Winston logger instance
 *
 * @param config Logger configuration
 * @returns Winston logger instance
 */
export declare function createLogger(config?: LoggerConfig): winston.Logger;
/**
 * Configure the default logger
 *
 * @param config Logger configuration
 */
export declare function configureLogger(config: LoggerConfig): void;
/**
 * Get the default logger instance
 *
 * @returns Default logger instance
 */
export declare function getLogger(): winston.Logger;
/**
 * Log an error message
 *
 * @param message Error message
 * @param meta Additional metadata
 */
export declare function error(message: string, meta?: LogMetadata): void;
/**
 * Log a warning message
 *
 * @param message Warning message
 * @param meta Additional metadata
 */
export declare function warn(message: string, meta?: LogMetadata): void;
/**
 * Log an info message
 *
 * @param message Info message
 * @param meta Additional metadata
 */
export declare function info(message: string, meta?: LogMetadata): void;
/**
 * Log an HTTP message
 *
 * @param message HTTP message
 * @param meta Additional metadata
 */
export declare function http(message: string, meta?: LogMetadata): void;
/**
 * Log a debug message
 *
 * @param message Debug message
 * @param meta Additional metadata
 */
export declare function debug(message: string, meta?: LogMetadata): void;
/**
 * Create a child logger with additional metadata
 *
 * @param meta Default metadata to include with all log messages
 * @returns Child logger
 */
export declare function createChildLogger(meta: LogMetadata): winston.Logger;
/**
 * Create a request logger middleware for HTTP requests
 *
 * @returns Request logger middleware
 */
export declare function createRequestLogger(): (req: HttpRequest, res: HttpResponse, next: () => void) => void;
/**
 * Logger class wrapper for easier instantiation and testing
 */
export declare class Logger {
    private logger;
    /**
     * Create a new Logger instance
     * @param config Logger configuration
     */
    constructor(config?: LoggerConfig);
    /**
     * Log an error message
     */
    error(message: string, meta?: LogMetadata): void;
    /**
     * Log a warning message
     */
    warn(message: string, meta?: LogMetadata): void;
    /**
     * Log an info message
     */
    info(message: string, meta?: LogMetadata): void;
    /**
     * Log an HTTP message
     */
    http(message: string, meta?: LogMetadata): void;
    /**
     * Log a debug message
     */
    debug(message: string, meta?: LogMetadata): void;
    /**
     * Create a child logger with additional metadata
     */
    createChild(meta: LogMetadata): winston.Logger;
    /**
     * Get the underlying winston logger
     */
    getWinstonLogger(): winston.Logger;
}
declare const _default: {
    LogLevel: typeof LogLevel;
    Logger: typeof Logger;
    configureLogger: typeof configureLogger;
    getLogger: typeof getLogger;
    createLogger: typeof createLogger;
    error: typeof error;
    warn: typeof warn;
    info: typeof info;
    http: typeof http;
    debug: typeof debug;
    createChildLogger: typeof createChildLogger;
    createRequestLogger: typeof createRequestLogger;
    redactSensitiveData: typeof redactSensitiveData;
};
export default _default;