`method format : (Js_of_ocaml__.Js.date Js_of_ocaml__.Js.t -> Js_of_ocaml__.Js.js_string Js_of_ocaml__.Js.t) Js_of_ocaml__.Js.readonly_prop`
`method formatToParts : Js_of_ocaml__.Js.date 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`