System requirement

All system requirement details are given below.

Project Requirement

First make sure you have installed node.js 8.X and npm 5.X version. You can check it on own terminal window simply by entering node -v and npm -v . You can also download latest nodeJs from here

$ npm -v 
$ node -v 

once node and npm gets installed on your machine we need to install Ionic globally as well .

// You can install ionic globally on your machine 
npm install -g @angular/cli 

Once Angular CLI install successfully verify installation with this command

ng -v   // it will show you the version of angualr-cli on your machine.

You might receive some other git related Error or node-sass as well .

If you Get this error please check if git has installed on your machine and if you are window user git should be in your path of machine .

If there is any error related to node-saas you may follow their guide based on your machine OS and most of the case window user might face issue then you can install Python 2.X on your machine and it probably resolves your Error.