We can add Ionic Native to any existing Ionic project. You will find ionic-native by default in any starter project you will start with Ionic 3. If you somehow have to install it then the recommended way is via the NPM package:
$ npm install @ionic-native/core --save
If you are using ES6/TypeScript for building Ionic 3 apps, you do not need any scripts tags to be included in the index.html file. Just import the specific ionic-native package inside your file:
import { SplashScreen } from '@ionic-native/splash-screen'import { StatusBar } from '@ionic-native/status-bar';
If you are using Ionic 1 then you need to add the ionic.native.js file inside the index.html file:
<script src="ionic.native.js"></script>
