If you're curious for a successor language that has better interop - along with fixing some of the problems that I saw a lot with Elm (former core team member), check out Derw: https://www.derw-lang.com/. The blog is updated frequently with whatever I'm working on, check out the latest post talking about what features are coming to Derw this year: https://derw.substack.com/p/things-coming-to-derw-feburary-2...