Example to redirect error logs to stdError

[robertsLando]

By default pino uses stdOut as destination. I would like him to use stdError for all error logs levels. By digging in docs I found the only way is to use pino-tee but I cannot find any example for this

UPDATE I have been able to do this in this way:

const pino = require('pino')

const { multistream } = require('pino-multi-stream')
var streams = [
  {stream: process.stdout},
  {level: 'error', stream: process.stderr},
  {level: 'fatal', stream: process.stderr}
]

const logger = pino({
  name: 'my-app',
  level: process.env.LOG_LEVEL || 'info',
  prettyPrint: process.env.DEV ?  { levelFirst: true } : false
}, multistream(streams))

module.exports = logger

[vajahath]

This should be in the docs.

[robertsLando]

It is, at least I think I added a PR to update logs with this example

[mcollina]

This has been added to pino core and will be part of pino@7.

[robertsLando]

BTW, it's here: https://getpino.io/#/docs/help?id=log-to-different-streams

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