@material-ui/core/esm/utils/ownerWindow.js

React components that implement Google's Material Design.

import ownerDocument from './ownerDocument';

function ownerWindow(node) {
  var fallback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : window;
  var doc = ownerDocument(node);
  return doc.defaultView || doc.parentView || fallback;
}

export default ownerWindow;