Winston: Error objects are not logged

[soulchild]

Please tell us about your environment:

• _winston version?_
  
  
  
  • [ ] winston@2
  
  
  • [X] winston@3
  
  
• _node -v outputs:_ v9.5.0
• _Operating System?_ macOS
• _Language?_ ES6/7

What is the problem?

The following code does not log the Error object, but just:

{"level":"error","message":{},"timestamp":"2018-08-03T13:38:21.376Z"}

const winston = require('winston');

const logger = winston.createLogger({
  level: 'info',
  transports: [
    new winston.transports.Console({
      format: winston.format.combine(winston.format.timestamp(), winston.format.json())
    })
  ]
});

logger.log({ level: 'error', message: new Error("Yo, it's on fire") });

I experimented with custom formatters:

winston.format.printf(info => `${info.timestamp} [ ${info.level} ] ${info.message}`)

which logs the Error message, but there's still no stack trace.

What do you expect to happen instead?

Coming from Winston@2, I'd expect this to log the Error object including a stack trace.

[frenzymind]

I have the same problem. I use winston-mongodb, and in 'meta' property in database I see level and error message, but not error object.

[rduque1]

+1

[xduseko]

Same problem here.

[heeju]

Error object gives undefined

[hbakhtiyor]

still not fixed :confused:

[DABH]

Valid concerns! There is a nice workaround by @SamuelMaddox17 / @indexzero in #1338 , but we should do something so this works more out-of-the-box. Let's track this issue in #1338 since it's the same thing. Thanks all!