How to import ionic-native into an Ionic1/AngularJS project?

I’m working on a project with Ionic v1 and AngularJS and Cordova.

I’m trying to include this firebase plugin in my project with no luck so far: https://github.com/dpa99c/cordova-plugin-firebasex

I was told to try out this node module: https://github.com/ionic-team/ionic-native#angularjs

However, I keep getting this error:

Error: [$injector:nomod] Module ‘ionic.native’ is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument.

<script src="../node_modules/@ionic-native/core/ionic-native-plugin.js"></script>

How can I make this work in my project and how can I import ionic-native properly?

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Source Url How to import ionic-native into an Ionic1/AngularJS project?