User blog comment:Kirkburn/Technical Update: March 25, 2015/@comment-24473195-20150327161427/@comment-24473195-20150328150249

Considering that people tend to ignore simple errors, I don't think it is a good idea to simply have a counter. What I meant is that  saving javascripts pages with syntax errors shouldn't be allowed. Since those can easily be detected by the code-editor. As far as warnings and suggestions are concerned, a counter may be added as you suggest to warn users.

It seems like a good idea to have something similar to the code-editor's status bar used in wikipedia.