import { Logger } from './logger';
/**
 * The default logger based on the `debug` package. To see log output, run
 * the application with `DEBUG=@node-ts/bus-*` set as an environment variable.
 */
export declare class DebugLogger implements Logger {
    private logger;
    constructor(name: string);
    private log;
    debug(message: string, meta?: object): void;
    trace(message: string, meta?: object): void;
    info(message: string, meta?: object): void;
    warn(message: string, meta?: object): void;
    error(message: string, meta?: object): void;
    fatal(message: string, meta?: object): void;
}