/**
 * Default log interface.
 */
export interface Logger {
    /**
     * Logs a message to the logger implementation.
     * Examples: logger.log('my message', userId, amount);
     * @param msg the message or object
     * @param data any extra parameter
     */
    log(msg: string, ...data: any): void;
    /**
     * Same verbosity as the `log()` method, but can be silenced.
     * Logs a message to the logger implementation with DEBUG level.
     * Examples: logger.debug('my message', userId, amount);
     * @param msg the message or object
     * @param data any extra parameter
     */
    debug(msg: string, ...data: any): void;
    /**
     * Logs a message to the logger implementation with INFO level.
     * Examples: logger.info('my message', userId, amount);
     * @param msg the message or object
     * @param data any extra parameter
     */
    info(msg: string, ...data: any): void;
    /**
     * Logs a message to the logger implementation with WARN level.
     * Examples: logger.warn('my message', userId, amount);
     * @param msg the message or object
     * @param data any extra parameter
     */
    warn(msg: string, ...data: any): void;
    /**
     * Logs a message to the logger implementation with ERROR level.
     * Examples: logger.error('my error message', errorObject);
     * @param msg the message or object
     * @param data any extra parameter
     */
    error(msg: string, data?: Error | any): void;
    /**
     * Logs a message with the lowest verbosity level (aligns with Winston levels).
     * Examples: logger.silly('detailed debug info', data);
     * @param msg the message or object
     * @param data any extra parameter
     */
    silly(msg: string, ...data: any): void;
}