Turns out for webdev you don't need full Xcode, trash it and install the stanalone developer tools via `xcode-select --install`. Just as well as the App Store has been redownloading Xcode all day yesterday.
`sudo xcode-select -s /Library/Developer/CommandLineTools` fixed the issue.
, Nov 05 2019 on vandragt.com
After that, Software Update finds a 5GB update to the developer tools, ugh.
Sander van Dragt, Nov 05 2019 on vandragt.com