MsgpackSourceParser and Serializer for Msgpack data. https://github.com/msgpack/msgpack/blob/master/spec.md
type t = | Nil| Integer of Base.int| Int64 of Base.Int64.t| UInt64 of Base.Int64.t| Boolean of Base.bool| Floating of Base.float| Array of t Base.list| Map of (t * t) Base.list| String of Base.string| Binary of Base.Bytes.t| Extension of Custom.tinclude Base.Comparable.S with type t := tinclude Base.Comparisons.S with type t := tcompare t1 t2 returns 0 if t1 is equal to t2, a negative integer if t1 is less than t2, and a positive integer if t1 is greater than t2.
ascending is identical to compare. descending x y = ascending y x. These are intended to be mnemonic when used like List.sort ~compare:ascending and List.sort ~cmp:descending, since they cause the list to be sorted in ascending or descending order, respectively.
clamp_exn t ~min ~max returns t', the closest value to t such that between t' ~low:min ~high:max is true.
Raises if not (min <= max).