How to use third party libraries like iziToast in ionic?

I have a ionic2 project and now I want to add iziToast into it. I tried importing it like follows:

import { izitoast } from 'izitoast';

But it gives me izitoast as undefined. However, I tried searching for the angular2 support for this library and I found ng2-iziToast
It’s not working by just installing and importing it to the app.module

Please suggest how to import and use this/ such library.

Looking at the configuration of the library at https://www.npmjs.com/package/ng2-izitoast#configuration I think for Cordova projects you would have to include these files in index.html via <script>.