Use Font Loader in Angular

How do I use a font loader, such as WebFontLoader or FontFaceObserver, in Angular?

I'm not sure on what/where I need to import and how to use it in a component.

Do:
npm install webfontloader

Then in your component you can write like this:

app.component.ts:

import * as WebFont from 'webfontloader';
// ...
ngOnInit(){
  WebFont.load({/* your config...*/})
}