This is to help with the migration to Ember CLI. In the current running version of Discourse everything should be the same as before, just with a few extra files that are not used. However, using Ember CLI this can be installed as an Ember addon.
This is pointless now!
I noticed discourse had MIT in our package.json so I took the opportunity to correct it.
I see it generates a warning:
warning package.json: License should be a valid SPDX license expression
Looking at the list (https://spdx.org/licenses/), it apparently should be:
Weird I literally got that string from a list of valid values! I guess it was wrong or outdated.