Mac – Xcode 10.1 – High Sierra 10.13.6

If you’re using Mac OS High Sierra, you are required to use Xcode 10.1 for compatibility.

Here is the direct link to Xcode 10.1 (requires Apple login):

https://download.developer.apple.com/Developer_Tools/Xcode_10/Xcode_10.xip or here

 

Additional tools (requires Apple login):

https://download.developer.apple.com/Developer_Tools/Additional_Tools_for_Xcode_10.1/Additional_Tools_for_Xcode_10.1.dmg

Command-line dev tools

sudo xcode-select --install

 

Notes

https://developer.apple.com/download/more/  (requires Apple login)

https://en.wikipedia.org/wiki/Xcode