There are plenty of tools for ClojureScript, including syntax highlighters and test runners. ClojureScript, like Clojure, also embraces the host platform, and c

There are plenty of tools for ClojureScript, including syntax highlighters and test runners. ClojureScript, like Clojure, also embraces the host platform, and can call out directly to JavaScript, so a lot of existing JS tooling is available as well. For example, the Karma test runner is frequently used. I’m not familiar with the Elm ecosystem, but I would be surprised if they don’t have pretty good (or likely excellent) tooling as well. I’ve seen syntax highlighted Elm and it’s well known for it’s excellent error messages. Any language change is likely to involve changes in the tools you use, but I don’t think that lack of tooling is a reason to avoid either of these.