I thought that Reason implicitly used Immutable-Re and Bucklescript implicity used Immutable, similar to how Clojurescript implicitly uses its own library from these structures. That is, if you write wholly within the language, you get the benefits of these structures without thinking about it. Is that not true?
GP was talking about PureScript, not Reason. To be honest, I have very little experience with either, but I just wanted to chime in re: the persistent data structures as a library topic with an anecdote from the JS side.
