One can spend an enjoyable afternoon re-implementing some of these using the equivalent of lisp's cons as a node: let node = (a,b) => (bool) => bool?a:b; It

One can spend an enjoyable afternoon re-implementing some of these using the equivalent of lisp's cons as a node: let node = (a,b) => (bool) => bool?a:b; It's a fun little exercise to also keep the rest of the functions minimalist.