Hi there, thanks for the awesome book!
So, in the spirit of a running demo worth thousand words, I cloned the project and npm install to try to run it, but I got the following error messages instead...

And I have the same error in both Windows and linux systems... and my Node is as new as latest.
I haven't run the demo other than this, and I hope this issue can give you some insight whether there'll be same problems in other demos, thanks!