When did you try it out? What didn&#x27;t you like?<p>I ported a site written in vanilla Javascript. I decided to faithfully port it without any changes before introducing scala specific libraries. That was pretty painful. A bunch of manual casting for UndefOr and  js.Function.<p>Since then I&#x27;ve started using some of the scalajs libraries&#x2F;frameworks straight away on projects. It has been a much more pleasant experience!