http://tools.wmflabs.org/interaction-timeline/?wiki=enwiki&user=Kaldari&user=Mooeypoo&startDate=1528675200
https://github.com/wikimedia/InteractionTimeline/pull/89
New Error only in production:
r.default.createRef is not a function
I'm going to delete node_modules and reinstall/rebuild and see if that resolves the problem .