Our community has decided that migrating from NodeBB would take too much time to be worth the effort, so we’ve decided to start a fresh Discourse forum.
Here is the unfinished importer I was working on. If anyone else needs to make a NodeBB importer, feel free to use this code.
https://gist.github.com/lasercar/9d3ac73630e8cac948748435291a8c0c