Fix node-gyp error on Mac

Edwardon

MacOS version: 10.15.3 Catalina
Node: 12.x LTS

If you got this node gyp error, then here will be you solution.

gyp: No Xcode or CLT version detected!
gyp ERR! configure error 
gyp ERR! stack Error: `gyp` failed with exit code: 1

Reinstall xcode-select in terminal

## Install Xcode
sudo rm -rf $(xcode-select -print-path)

xcode-select --install

# Verify 

/usr/sbin/pkgutil --packages | grep CL

## Return 
com.apple.pkg.CLTools_Executables
com.apple.pkg.CLTools_SDK_macOS110
com.apple.pkg.CLTools_SDK_macOS1015
com.apple.pkg.CLTools_macOS_SDK

// Optional

sudo npm install -g node-gyp