When attempting to install the npm package for the CLI "sudo npm install -g email@example.com", I would get two lines, then the install seemed to hang:
npm cache clean gave slightly better results:
But the CLI was not installed. We found this:
Update npm version with: sudo npm install npm -g
Then retry install.
1) Ensure you have the indicated versions of node and npm
2) try to install alpha version with "sudo npm install -g firstname.lastname@example.org"
The install fails with 2-4 lines then hang