We will start by going to the official Node.js website and download the corresponding binary to our operating system. Git should be installed as well.
To verify the installation, open a new command line window and run:
$ node --version
$ npm --version
$ git --version
Install Ionic CLI:
$ npm install -g @ionic/cli
Once installation is finished, go to the app folder and install the app dependencies:
Nearme-x.x.x/app:$ npm install
Run app:
Nearme-x.x.x/app:$ ionic serve
Within a few seconds the app should be up and running in your web browser.
For more details the official Ionic guide has all the necessary documentation.