Successful FontAwesome production build?

I do this too, but with a different syntax that I think is more amenable to tree-shaking (although again this may no longer be a concern: I was a very early adopter of angular-fontawesome, since it was in alpha):

class IconService {
  truck = faTruck;
  check = faMoneyCheckAlt;
}
class Page {
  constructor(public icons: IconService) {}
}

<fa-icon [icon]="icons.truck"></fa-icon>