NumberFormat.t
method formatToParts : Js_of_ocaml__Js.number Js_of_ocaml__Js.t Js_of_ocaml__Js.optdef -> format_part Js_of_ocaml__Js.t Js_of_ocaml__Js.js_array Js_of_ocaml__Js.t Js_of_ocaml__Js.meth
method resolvedOptions : unit -> resolved_options Js_of_ocaml__Js.t Js_of_ocaml__Js.meth