import * as winston from "winston";
import * as Transport from 'winston-transport';
export declare type LogLevel = "error" | "warn" | "info" | "verbose" | "debug" | "silly";
export interface LoggerOptions {
    logLevel: LogLevel;
    transports?: Transport[];
}
export declare abstract class Logger {
    abstract error(message: string, meta?: any): Logger;
    abstract warn(message: string, meta?: any): Logger;
    abstract info(message: string, meta?: any): Logger;
    abstract verbose(message: string, meta?: any): Logger;
    abstract debug(message: string, meta?: any): Logger;
    abstract silly(message: string, meta?: any): Logger;
}
export declare function createLogger({ logLevel, transports }: LoggerOptions): winston.Logger;