I updated Node, NPM, all my global node modules, ran
brew update, reinstalled xcode:
sudo rm -rf /Library/Developer/CommandLineTools then
xcode-select --install and it seems to be working again.
Same error shows up in a freshly made Vue project created with vue create as well.
created a fresh vue project using @vue/cli and I was able to run
npm run serve. Hopefully this helps for anyone else facing this issue.
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