[christophilus]

Can't speak for HN, but I really liked tinkering with it. If I remember correctly, its data structures were just basic JS data structures under the hood (e.g. JS arrays, objects, etc), which meant it didn't show the same perf benefits of a language that uses persistent data structures under the hood (e.g. Clojure, OCaml/Reason). I wonder if that has changed since I took a look.

[platz]

Cool you liked it - I recently had a similar experience replacing from JQuery froms with it.

It does by default it provide access to native JS data structures, but you don't have to use them e.g. there are persistent structures as well. https://pursuit.purescript.org/packages/purescript-ordered-c... though I don't quite understand the comment that persistent data structures are "slower" than native structures; I thought usually, it's the other way around.