Update `StorageEvent` interface

[falsandtru]

new StorageEvent(); // Uncaught TypeError: Illegal constructor(…)

interface StorageEvent extends Event {
    key: string;
    newValue: any;
    oldValue: any;
    storageArea: Storage;
    url: string;
    initStorageEvent(typeArg: string, canBubbleArg: boolean, cancelableArg: boolean, keyArg: string, oldValueArg: any, newValueArg: any, urlArg: string, storageAreaArg: Storage): void;
}

declare var StorageEvent: {
    prototype: StorageEvent;
    new(): StorageEvent;
}

https://github.com/Microsoft/TypeScript/blob/master/lib/lib.dom.d.ts

[Constructor(DOMString type, optional StorageEventInit eventInitDict)]
interface StorageEvent : Event {
  readonly attribute DOMString? key;
  readonly attribute DOMString? oldValue;
  readonly attribute DOMString? newValue;
  readonly attribute DOMString url;
  readonly attribute Storage? storageArea;
};

dictionary StorageEventInit : EventInit {
  DOMString? key;
  DOMString? oldValue;
  DOMString? newValue;
  DOMString url;
  Storage? storageArea;
};

http://www.w3.org/TR/webstorage/#the-storage-event

• Constructor requires a first parameter.
• Constructor optional parameter type is dict.
• Require StorageEventInit interface.
• newValue and oldValue are string.
• StorageEventInit requires url field.

[DanielRosenwasser]

I think we'd be willing to take a PR on https://github.com/Microsoft/TSJS-lib-generator

[falsandtru]

Okay.