While trying to make a devtools directory eslint-clean, I noticed many warnings coming from a test directory's head.js file. In particular, many top-level definitions in this file trigger the no-unused-var warning. I think it would be good to have a special rule for head.js (and similar, see bug 1240163) that marks the top-level definitions as used. While it would be possible to disable the no-unused-var warning in these files, it would be nicer to have a custom rule to minimize the damage.

One workaround is to use /* exports ... */ for each exported definition. Maybe this is sufficient.

We discussed on irc and agreed that head.js files should just have: /* eslint no-unused-vars: [2, {"vars": "local"}] */ So I think this bug is obsolete.