Honestly I've never fully given Elm enough of a run-through to say yet (ditto with OCaml). I remember 2yrs ago I was evaluating it but decided to learn React/Vue.js for professional reasons. Additionally I wasn't convinced that Elm would be an ideal long-term commitment and more of a compromise between JS, FP, FRP (functional reactive programming) and more of a framework competitor than a full-blown language.

While I see PureScript as a full long-term language-level commitment to Haskell style FP minus the purity. But again my exposure to it has been too limited to have a strong opinion.