User blog comment:DaNASCAT/Technical Update: September 7, 2016/@comment-28822533-20160908182813/@comment-11733175-20160909062452

I've come up against the same problem while developing a new feature. It wasn't at a stage were it was ready, and I purposefully left it un-reviewed. Someone else came along, corrected a type in a comment and sent it for review.

Ultimately, I'm not sure what can be done about it without re-restricting editing of scripts to a subset of users. I've wondered about added a message to all .js pages telling users to not submit changes that aren't theirs unless they're sure it works (to w:c:dev:Clearyourcache maybe?), but I'm not sure how effective it would be.

Looking over the discussion Dessamator linked to about i18n, it would appear that there's a more general issue caused by a lack of a decent set of tools for 3rd party js. In the real world, you'd be able to add dependencies properly and split out i18n, but on Wikia that's awkward at best. It was something Wikimedia were working on last I looked, but as it's tied into Gadgets which Wikia has stopped supporting and has moved on in great strides since 1.19, I can't see it ever coming to Wikia.