I don't know if/how active you are with Factorio modding right now, but seeing as I love Orphan Finder and not being able to use it under Factorio 2.0 was driving me mad, I've made some minor changes to get your code working again and uploaded a fork for others in the same position, with credit and a link to this mod page.
If you update yours, please let me know and I'll delist the fork.
