#import <DOM/Event.idl>

[Exposed=(Window,Worker)]
interface IDBVersionChangeEvent : Event {
    constructor(DOMString type, optional IDBVersionChangeEventInit eventInitDict = {});
    readonly attribute unsigned long long oldVersion;
    readonly attribute unsigned long long? newVersion;
};

dictionary IDBVersionChangeEventInit : EventInit {
    unsigned long long oldVersion = 0;
    unsigned long long? newVersion;
};