How to add os-scroll extension in Angular

[swagata1603]

I have tried to add this extension in my angular app. But getting this error - index.js:1 Uncaught ReferenceError: OverlayScrollbars is not defined

I have added the cdn in my index.html -
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/os-scroll-chain@1/dist/os-scroll-chain.min.js"></script>

I have added these two in my main ts file

import * as scrollChain from 'os-scroll-chain';
OverlayScrollbars.extension("scrollChain", scrollChain );

Then in my custom overlay scrollbar component I have used this -

OverlayScrollbars(
  this.osTarget(),
  this._options || {},
  { scrollChain: {vertical: false, horizontal: false} }
);