#import 
#import 
// https://html.spec.whatwg.org/multipage/form-elements.html#htmloutputelement
[Exposed=Window]
interface HTMLOutputElement : HTMLElement {
    [HTMLConstructor] constructor();
    // FIXME: [SameObject, PutForwards=value] readonly attribute DOMTokenList htmlFor;
    readonly attribute HTMLFormElement? form;
    [CEReactions, Reflect] attribute DOMString name;
    readonly attribute DOMString type;
    [CEReactions] attribute DOMString defaultValue;
    [CEReactions] attribute DOMString value;
    // FIXME: readonly attribute boolean willValidate;
    // FIXME: readonly attribute ValidityState validity;
    // FIXME: readonly attribute DOMString validationMessage;
    // FIXME: boolean checkValidity();
    // FIXME: boolean reportValidity();
    // FIXME: undefined setCustomValidity(DOMString error);
    // FIXME: readonly attribute NodeList labels;
};