Ionic stuck on 'installing npm packages'

I got ionic stuck on ‘installing npm packages’ for hours when trying to start new ionic project with ionic start ionic-tabs-app tabs --v2

my ionic info:
Cordova CLI: 6.5.0
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
ios-deploy version: Not installed
ios-sim version: 5.0.13
OS: OS X El Capitan
Node Version: v7.4.0
Xcode version: Xcode 8.2.1 Build version 8C1002

what does the error shows?

It doesn’t show any error it keeps stuck on installing npm packages for hours.