Definition
HTML Standard defines StorageEvent
[Exposed=Window]
interface StorageEvent : Event {
constructor(DOMString type, optional StorageEventInit eventInitDict = {});
readonly attribute DOMString? key;
readonly attribute DOMString? oldValue;
readonly attribute DOMString? newValue;
readonly attribute USVString url;
readonly attribute Storage? storageArea;
undefined initStorageEvent(DOMString type, optional boolean bubbles = false, optional boolean cancelable = false, optional DOMString? key = null, optional DOMString? oldValue = null, optional DOMString? newValue = null, optional USVString url = "", optional Storage? storageArea = null);
};