How to install ng executable for Angular

I've just finished setting up a new unit and now I'm trying to download some of my old angular projects. To my disappointment, I've encountered a rather similar but different error from before, which unfortunately, I forgot what I did to solve :-(

So I'm blogging it now.

Right after installing node you'll have access to npm binary but not ng. To install the ng binary we run:

npm install -g @angular/cli

And then when I tried to run: ng serve, I got:

npm ERR! Error: EPERM: operation not permitted, scandir

Solution (run the following commands):

npm cache verify
npm install -g @angular/cli --force