The guide has a whole section about web components/custom elements https://guide.elm-lang.org/interop/custom_elements.html https://guide.elm-lang.org/interop/cu

The guide has a whole section about web components/custom elements https://guide.elm-lang.org/interop/custom_elements.html https://guide.elm-lang.org/interop/custom_elements.html. I've also found them useful in my code outside of Elm as they work in vanilla JS.