You should use Bunyan for logging in your NodeJS apps. But, for some mystifying reason, there are a lot of people out there who don't. To this end, I needed a class that could let me wrap an arbitrary "logger-like" object in the Bunyan API so that I can pass logs to Bunyan all willy-nilly (which, for those interested, is the correct way to pass logs) while not blowing things up spectacularly for those using other methods of logging.
Just pass some kind of logger (it's tested with Bunyan and console) to the
bunyanize method. If it's a real Bunyan logger it'll just pass it back to you,
or optionally you can pass an object with fields to add to a child logger. There
are tests to demonstrate how it works.
Have fun. Use Bunyan.