How to fix timeout for packages on `npm install`?

Question

When I run npm install it seems to work fine until part way installing packages. It seems to have no problem with the first half, but then after a while it will

Answer 1

It might not be your case, but I had issues with a package being hosted at github with the repo url being only with git protocol (port 9418 not usually open on firewall).

Once added that to the firewall I could npm install without issues.

You can view the repository url with:

$ npm view zone.js repository.url
git://github.com/angular/angular.git