SDK tutorial third party problem

I was looking for help in making an addon with SDK. On this page
https://developer.mozilla.org/en-US/Add-ons/SDK/Tutorials/Using_third-party_modules_(jpm)
It suggested that I download a module with npm called menuitem. I did what it said but it didn’t work. It said that it couldn’t find GIT.?

I don’t know what GIT has to do with the module but it then deleted the module from my system. Is there another way to do this? Does the tutorial need to be fixed?

git is a version-control system. It can be downloaded from https://git-scm.com/.

Could you possibly add this information to the tutorial? Or do we all need to find this information out by searching the web for corrections to the tutorials?
Blessings

It’s a wiki. Feel free to add it yourself.

Hi guys,
I added a note about git command.