Error tracebacks with gruntjs

Question

When encountering an error running grunt, I sometimes get messages like this, with no further information as to where the data variable was not defined, etc.

Running "render-site:dev" (render-site) task
Warning: data is not defined Use --force to continue.

Aborted due to warnings.

Is there a way to show a traceback, or even just the line number at which the error occurred?

Answer 1

Found it:

grunt --stack

.......