Below is the API for the OCaml standard library. It's directly copied over from the OCaml Manual, formatted to the Reason syntax and styled accordingly. The API docs are work-in-progress; we'll be polishing these gradually!
If you're targeting JavaScript, the API docs for BuckleScript includes all of below, plus JS-specific APIs.
sig
type constant =
Const_int of int
| Const_char of char
| Const_string of string * string option
| Const_float of string
| Const_int32 of int32
| Const_int64 of int64
| Const_nativeint of nativeint
type rec_flag = Nonrecursive | Recursive
type direction_flag = Upto | Downto
type private_flag = Private | Public
type mutable_flag = Immutable | Mutable
type virtual_flag = Virtual | Concrete
type override_flag = Override | Fresh
type closed_flag = Closed | Open
type label = string
type 'a loc = 'a Location.loc = { txt : 'a; loc : Location.t; }
type variance = Covariant | Contravariant | Invariant
end