import { LoggerService as NestLoggerService } from '@nestjs/common';
import { Logger } from 'winston';
export declare class LoggerProvider implements NestLoggerService {
    private readonly logger;
    protected context: string;
    private isTimestampEnabled;
    static instance: LoggerProvider;
    static logLevels: string[];
    constructor(logger: Logger);
    readonly requestId: string;
    setContext(value: string): this;
    requestContext(context?: string): string;
    info(message: any, ...optionalParams: any[]): Logger;
    log(message: any, ...optionalParams: any[]): Logger;
    error(message: any, trace?: string, ...optionalParams: any[]): any;
    warn(message: any, ...optionalParams: any[]): any;
    debug?(message: any, ...optionalParams: any[]): any;
    verbose?(message: any, ...optionalParams: any[]): any;
    callFunction(name: any, message: any, context: any): void;
    getInstance(): LoggerProvider | typeof LoggerProvider;
    isLogLevelEnabled(level: any): boolean;
}