any-restapi-errors/winston.js

npm module for handling and logging errors in Node.js API

import winston from 'winston'
const logger = winston.createLogger({
  level: 'error',
  format: winston.format.combine(
    winston.format.timestamp({format: 'YYYY-MM-DD HH:mm:ss'}),
    winston.format.prettyPrint()
  ),
  
  transports: [
    //
    // - Write all logs with importance level of `error` or higher to `error.log`
    //   (i.e., error, fatal, but not other levels)
    //
    new winston.transports.File({ filename: 'error.log', level: 'error' })
 
  ],
});

export default logger