Dom_html.messageEvent
inherit event
method data : Js_of_ocaml__.Js.Unsafe.any Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop
method source : Js_of_ocaml__.Js.Unsafe.any Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop