I'm not sure why but https://github.com/facebook/react/pull/10156 seems to have caused issues in production with us. We'll need to either revert or find a way to fix forward. Right now master is broken, and if we sync again before fixing, we'll break things.
/**
 * Copyright 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @emails react-core
 */
'use strict';
var React = require('react');
var ReactTestUtils = require('react-dom/test-utils');
var inputValueTracking = require('inputValueTracking');
describe('inputValueTracking', () => {
  var input, checkbox, mockComponent;
  beforeEach(() => {
    input = document.createElement('input');
    input.type = 'text';
    checkbox = document.createElement('input');
    checkbox.type = 'checkbox';