joyent/node — pull request #7687 by piranna (2014-05-25 00:17:08+00:00)
Title: Console.debug()

Add support for Console.debug() function, as latest versions of Chrome & Firefox has. In a logical order, debug() has a lower priority than log(), although it's only intended for developers and it's not part of the normal output of the program, due to this I output it on stderr like warn() & error().