val number : [ `Float of float | `Infinity | `Neginfinity | `Nan | `Floatlit of string ] -> json_streamval integer : int -> json_streamval largeint : string -> json_streamval null : json_streamval string : string -> json_streamval bool : bool -> json_streamval array_start : unit -> json_streamval array_end : unit -> json_streamval object_start : unit -> json_streamval object_end : unit -> json_streamval tuple_start : unit -> json_streamval tuple_end : unit -> json_streamval variant_start : unit -> json_streamval variant_end : unit -> json_streamval name : string -> json_stream