**Do you want to request a *feature* or report a *bug*?**

Bug

**What is the current behavior?**

React Native for Web was broken by 16.5 as describe [here](https://github.com/necolas/react-native-web/issues/1096) due to this change https://github.com/facebook/react/pull/13539

**What is the expected behavior?**

Release a version of React that exports the EventPluginHub.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

Worked in 16.4
*         ...
 *         child: {order: NA, assertEvent: null, returnVal: blah}
 *       }
 *       ...
 *     }
 *
 * After this is created, a test case would configure specific event orderings
 * and optional assertions. Anything left with an `order` of `NA` will be
 * required to never be invoked (the test runner will make sure it throws if
 * ever invoked).
 *
 */
const NA = -1;
const oneEventLoopTestConfig = function(readableIDToID) {
  const ret = {
    
    scrollShouldSetResponder: {bubbled: {}, captured: {}},
    startShouldSetResponder: {bubbled: {}, captured: {}},
    moveShouldSetResponder: {bubbled: {}, captured: {}},
    responderTerminationRequest: {},
    
    responderReject: {}, 
    responderGrant: {},
    responderStart: {},
    responderMove: {},
    responderTerminate: {},
    responderEnd: {},
    responderRelease: {},
  };
  for (const eventName in ret) {