import { LoggerService } from '@nestjs/common';
export interface Logger {
    trace(): boolean;
    trace(error: Error, ...params: any[]): void;
    trace(obj: object, ...params: any[]): void;
    trace(format: any, ...params: any[]): void;
    debug(): boolean;
    debug(error: Error, ...params: any[]): void;
    debug(obj: object, ...params: any[]): void;
    debug(format: any, ...params: any[]): void;
    info(): boolean;
    info(error: Error, ...params: any[]): void;
    info(obj: object, ...params: any[]): void;
    info(format: any, ...params: any[]): void;
    warn(): boolean;
    warn(error: Error, ...params: any[]): void;
    warn(obj: object, ...params: any[]): void;
    warn(format: any, ...params: any[]): void;
    error(): boolean;
    error(error: Error, ...params: any[]): void;
    error(obj: object, ...params: any[]): void;
    error(format: any, ...params: any[]): void;
    fatal(): boolean;
    fatal(error: Error, ...params: any[]): void;
    fatal(obj: object, ...params: any[]): void;
    fatal(format: any, ...params: any[]): void;
}
export declare const rootLogger: Logger;
export declare const createLogger: (name: string) => Logger;
export declare class BunyanLogger implements LoggerService {
    log(message: string): void;
    error(message: string, trace: string): void;
    warn(message: string): void;
}