Example docs error in function declaration

this function def in the example:
func fetch(_ url: String) -> JSPromise {
  JSPromise(jsFetch(url).object!)!
}

 should be

func fetch(_ url: String) -> JSPromise<JSObject, JSError> {
  JSPromise(jsFetch(url).object!)!
}

Xcode will fix is as <Any,Any> which does not help.