Adding header lines to logfiles in File and DailyRotateFile transport

[alinex]

I want to have a logfile header consisting of some comment lines explaining the used format (own formatter funtion).

I tried to use the open event but that is fired too late. I only don't know if it is fired on each file open (not as good) or if a new file is started (better),

My solution so far looks like (CoffeeScript);

trans = new winston.transports.DailyRotateFile  # or File
  level: 'info'
  filename: "#{__dirname}/log/#{filename}"
  formatter: myFormatter
trans.on 'open', ->
  trans._stream.write "# MY LOGFILE HEADER\n"
logger = new winston.Logger
  transports: [trans]

If I run this I will get:

INFO the real log entry
# MY LOGFILE HEADER
INFO another entry
INFO another entry

You see this comes one line too late.

Have you a better solution?

[indexzero]

The DailyRotateFile transport was moved to a separate module (winston-daily-rotate-file) as of winston@2.0.0. As such we are closing issues here and tracking their status in a single tracking issue in the new repository.

Please open a new issue on winston-daily-rotate-file to continue the discussion.