`npm install` fails on node-gyp rebuild with `gyp: No Xcode or CLT version detected!`

Question

Every time I try npm install. I get the following error. How do I fix it?

gyp: No Xcode or CLT version detected!

I am on n

Answer 1

on catalina had to manually install command line tools for xcode from https://developer.apple.com/download/more/