/**
 * Log levels
 */
export declare enum LogLevel {
    DEBUG = "debug",
    INFO = "info",
    WARN = "warn",
    ERROR = "error"
}
/**
 * Logger interface
 */
export interface Logger {
    debug(message: string, ...args: any[]): void;
    info(message: string, ...args: any[]): void;
    warn(message: string, ...args: any[]): void;
    error(message: string, ...args: any[]): void;
    child(fields: Record<string, any>): Logger;
}
/**
 * Console logger implementation
 */
export declare class ConsoleLogger implements Logger {
    private readonly isDevelopment;
    private readonly fields;
    constructor(fields?: Record<string, any>);
    /**
     * Format log message with timestamp and level
     */
    private formatMessage;
    /**
     * Create a child logger with additional fields
     */
    child(fields: Record<string, any>): Logger;
    /**
     * Log a debug message (only in development)
     */
    debug(message: string, ...args: any[]): void;
    /**
     * Log an info message
     */
    info(message: string, ...args: any[]): void;
    /**
     * Log a warning message
     */
    warn(message: string, ...args: any[]): void;
    /**
     * Log an error message
     */
    error(message: string, ...args: any[]): void;
    /**
     * Process args and add fields
     */
    private processArgs;
}
/**
 * Get the logger instance
 * @returns Logger instance
 */
export declare function getLogger(): Logger;
/**
 * Set a custom logger implementation
 * @param customLogger The custom logger to use
 */
export declare function setLogger(customLogger: Logger): void;