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 val seek_out : Pervasives.out_channel -> int64 -> unit val pos_out : Pervasives.out_channel -> int64 val out_channel_length : Pervasives.out_channel -> int64 val seek_in : Pervasives.in_channel -> int64 -> unit val pos_in : Pervasives.in_channel -> int64 val in_channel_length : Pervasives.in_channel -> int64 end