Can't log to stderr in tricky case

[krazylek]

Hello Matteo,

While playing with pino, I noticed a subtle bug, when stderr is redirected from bash like this:

node index.js 2> error.log

And index.js looks like

var pino = require('pino')
var log = pino(process.stderr)
log.warn('will output to stdout')

It seems related to the property _writableState which is undefined in this case.

So the condition opts && opts._writableState to assign opts to the stream, can't pass.

Note that it just happens when options are omitted!

Cheers,
Benoit

[davidmarkclements]

Very nice catch

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