MutationObserver.mutationObserver
method observe : Js_of_ocaml__.Dom.node Js_of_ocaml__.Js.t ->
mutationObserverInit Js_of_ocaml__.Js.t ->
unit Js_of_ocaml__.Js.meth
method takeRecords : mutationRecord Js_of_ocaml__.Js.t
Js_of_ocaml__.Js.js_array
Js_of_ocaml__.Js.t
Js_of_ocaml__.Js.meth