/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

// https://dom.spec.whatwg.org/#mixin-xpathevaluatorbase
[Exposed=Window]
callback interface XPathNSResolver {
  DOMString? lookupNamespaceURI(DOMString? prefix);
};