Fetch.responseInit
method status : int Js_of_ocaml__.Js.writeonly_prop
method statusText : Js_of_ocaml__.Js.js_string Js_of_ocaml__.Js.t Js_of_ocaml__.Js.writeonly_prop
method headers : headers Js_of_ocaml__.Js.t Js_of_ocaml__.Js.writeonly_prop