Reason · Reason lets you write simple, fast and quality type safe code while leveraging both the JavaScript & OCaml ecosystems.

sig
 type shape =
   Function
  | Lazy
  | Class
  | Module of CamlinternalMod.shape array
  | Value of Stdlib.Obj.t
 val init_mod : string * int * int -> CamlinternalMod.shape -> Stdlib.Obj.t
 val update_mod :
  CamlinternalMod.shape -> Stdlib.Obj.t -> Stdlib.Obj.t -> unit
end