I feel kind of privileged. I always end up with rare and complex issues to solve when developing on MacOS. After getting a crazy amount of reputation on Stackoverflow for the Xdebug on Catalina conundrum, this time a yet undocumented failure with PHPUnit arose. But again, I do like a good puzzle. Installing PHP with Homebrew or doing a clean install of MacOS could have been an easy fix on this one, but something in me couldn’t leave the question unanswered.

I haven't used scss in a while, and of course, when you don't touch something in a while, it won't work anymore. That was the case with node-sass, used to compile .scss file. Here's my notes on how to reinstall node-sass globally on MacOS, including the necessary Atom package, in case it could be useful to someone else.