message: utils/window: remove remnant of IE8 support
diff: @@ -35,7 +35,7 @@ win.getWindow = function getWindow (node) {
  const rootNode = (node.ownerDocument || node);
  - return rootNode.defaultView || rootNode.parentWindow || win.window;
  + return rootNode.defaultView || win.window;
  };
  win.init = init;
  