Fixes.

node_modules/jsdom/lib/jsdom/living/events/WheelEvent-impl.js

@@ -0,0 +1,12 @@
+"use strict";
+
+const MouseEventImpl = require("./MouseEvent-impl").implementation;
+
+const WheelEventInit = require("../generated/WheelEventInit");
+
+class WheelEventImpl extends MouseEventImpl {}
+WheelEventImpl.defaultInit = WheelEventInit.convert(undefined);
+
+module.exports = {
+  implementation: WheelEventImpl
+};