When you look at Elm with similar projects, like Melange or Rescript, they’re all “dead” in the sense that they aren’t the moving targets that most people expect of the Javascript ecosystem.

That said, they are still under active development with their own small communities achieving what they set out to do, and no more. No expansive rewrites or fancy new features.

Compare with Typescript, which always is “improving” because it’s trying to provide type inference around a loose Javascript model, so there’s always more complexity to be added.