It's currently living here: https://github.com/joakin/resource-modules
When the job fails code inside MobileFrontend is unmergeable.
This job is currently failing after a change to mw.track inside https://gerrit.wikimedia.org/r/#/c/mediawiki/core/+/437914/ which seems to define mw.track twice which confuses the parser.
Example of a failing job:
21:13:50 Error: Dependency problems in file: resources/mobile.search/MobileWebSearchLogger.js:
21:13:50 Required mw.track defined in multiple files:
I've asked for clarification from performance team, but we may need to update resource-modules again. :(