// https://html.spec.whatwg.org/multipage/dnd.html#datatransfer
[Exposed=Window]
interface DataTransfer {
    constructor();

    // FIXME: attribute DOMString dropEffect;
    // FIXME: attribute DOMString effectAllowed;

    // FIXME: [SameObject] readonly attribute DataTransferItemList items;

    // FIXME: undefined setDragImage(Element image, long x, long y);

    // old interface
    // FIXME: readonly attribute FrozenArray<DOMString> types;
    // FIXME: DOMString getData(DOMString format);
    // FIXME: undefined setData(DOMString format, DOMString data);
    // FIXME: undefined clearData(optional DOMString format);
    // FIXME: [SameObject] readonly attribute FileList files;
};