const winston = require('winston'); const logger = winston.createLogger({ level: 'info', format: winston.format.json(), defaultMeta: { service: 'test-service' }, transports: [ new winston.transports.File({ filename: 'error.log', level: 'error' }), new winston.transports.File({ filename: 'combined.log' }), new winston.transports.Console({ format: winston.format.simple() }), ], }); module.exports = logger;