Warning: undefined is not a function

[erickbelfy]

have you guys already threw this error Warning: undefined is not a function Use i've configured an simple stylus file routine, take a look:

module.exports = { production: { files: { 'assets/build/styles/main.css': 'assets/styles/main.styl', } } };

Could you guys help me with that? Thanks

[arthurvr]

Could you please post your whole Gruntfile, or at least the configuration you used for this task? Also, it would be handy to see your whole trace.

[vladikoff]

In addition

Support questions are better asked on StackOverflow:
http://stackoverflow.com/questions/tagged/gruntjs