This article talks about the migration from the
luna implementation in PHP (using the Homebrew package manger) to the Node version (using the noodle promise maker … or whatever npm stands for).
First, uninstall the brew formula pvtuhs/luna/luna.
brew uninstall pvtuhs/luna/luna
Now, you can untap pvtuhs/luna
brew untap pvtuhs/luna
Follow the instructions here: https://github.com/pvtuhs/luna#readme