Class type IntersectionObserver.intersectionObserverOptions

method root : Js_of_ocaml__Dom.node Js_of_ocaml__Js.t Js_of_ocaml__Js.writeonly_prop
method rootMargin : Js_of_ocaml__Js.js_string Js_of_ocaml__Js.t Js_of_ocaml__Js.writeonly_prop
method threshold : float Js_of_ocaml__Js.js_array Js_of_ocaml__Js.t Js_of_ocaml__Js.writeonly_prop