typedef Promise<(DOMString or Blob)> ClipboardItemData;

// https://w3c.github.io/clipboard-apis/#clipboard-item-interface
[SecureContext, Exposed=Window]
interface ClipboardItem {
    constructor(record<DOMString, ClipboardItemData> items,
              optional ClipboardItemOptions options = {});

    readonly attribute PresentationStyle presentationStyle;
    // FIXME: Should be a FrozenArray<DOMString>
    readonly attribute sequence<DOMString> types;

    Promise<Blob> getType(DOMString type);

    static boolean supports(DOMString type);
};

enum PresentationStyle { "unspecified", "inline", "attachment" };

dictionary ClipboardItemOptions {
    PresentationStyle presentationStyle = "unspecified";
};