Nvim + merlin in wasm?

@patricoferris :

I just got try-eio to build, preparing to make changes to it.

However, when I run the builtin example, the (in browser repl) displays an error of:

 OCaml version 5.0.0
     Compiled with Js_of_ocaml version 5.0.1

Exception: Failure "Effect handlers are not supported".

Everything else appears to work. For example, if I eval

let x = 1 + 2;;

it displays:

val x : int = 3

I realize this is not much. Any advice on how to debug this ?