Sorry I can't be much help. I tend to run npm processes sequentially and it's been years since I last used XCode. As far as I can tell XCode is a lot worse than VSCode in terms of RAM requirements.
Exactly. Thinking about delegating all the Xcode stuff to iMac
It would probably make your life easier.
Concerning multiple npm processes, after a good night's sleep I remembered that I used to run a (small) MongoDB database, an Express server and a React client concurrently without problems.
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