[QUESTION] Why `PinoLogger` instance don't show the error object

When I use a PinoLogger instance to display some error object like this.logger.error(Error('foo')) I get this:

{
  "level": 50,
  "time": 1590422389076,
  "pid": 27787,
  "hostname": "--",
  "name": "app",
  "req": {
    "id": 1,
    "method": "GET",
    "url": "--",
    "headers": {
      "host": "localhost:3000",
      "user-agent": "insomnia/7.1.1",
      "accept": "*/*"
    },
    "remoteAddress": "127.0.0.1",
    "remotePort": 52126
  },
  "context": "ExceptionsHandler"
}

seems like the arg isn’t serialized by pino.stdSerializers.err because

this.logger.error( pino.stdSerializers.err(Error('foo')) )

works as expected (with { type, message, stack }). This happen even when I explicity define the serializers. Is it the right behavior?

Great lib btw!

[iamolegga]

Good catch, thanks. I’ll try to see what can be done here

[kirit0s]

Pino expects Error object in err field and can correctly serialize it.

Example:

this.logger.error({ err: new Error('message') })