Class type `Push_js.serviceWorkerContainer`

method register : Js_of_ocaml.Js.js_string Js_of_ocaml.Js.t -> serviceWorkerRegistration Js_of_ocaml.Js.t promise Js_of_ocaml.Js.t Js_of_ocaml.Js.meth
method getRegistration : serviceWorkerRegistration Js_of_ocaml.Js.t Js_of_ocaml.Js.optdef promise Js_of_ocaml.Js.t Js_of_ocaml.Js.meth