diligent-node-api/src/logging/logger.js

const winston = require('winston')
const config = require('config')

const logger = winston.createLogger({
    level: 'info',
    format: winston.format.json(),
    defaultMeta: { service: 'user-service' },
    transports: [
        new winston.transports.File({ filename: '../public/loggerFiles/error.log', level: 'error' }),
        new winston.transports.File({ filename: '../public/loggerFiles/all.log', level: 'silly' }),
        new winston.transports.Console({level: 'silly'}),
    ],
});

if (config.util.getEnv('NODE_ENV') !== 'production') {
    logger.add(new winston.transports.Console({
        format: winston.format.simple(),
    }));
}

module.exports = logger