Solved Discourse update blocked by uglifier issue
Just to update here on why we haven't updated discourse yet. The new upstream version pulls in assets which require harmony support for uglifyjs. I have created a patch for upstream at https://github.com/discourse/discourse/pull/15757 so we likely wait either for it to get merged or at least feedback on it, since there may be unexpected side-effects, if we just locally apply this to our package.
App is out now, we have moved the package to use