Typescript Nodejs Logger script

logger.ts

import * as dotenv      from 'dotenv';
import winston          from 'winston'
const logger = winston.createLogger({
    level: 'info',
    format: winston.format.json(),
    defaultMeta: { service: 'user-service' },
    transports: [
      new winston.transports.File({ filename: process.env.ERROR_LOGS, level: 'error' }),
      new winston.transports.File({ filename: process.env.WARNING_LOGS, level: 'warning' }),
      new winston.transports.File({ filename: process.env.INFO_LOGS, level: 'info' }),
    ]
  });
export default logger