**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
this._callbacks = null;
  this._didCommit = false;
  
  
  this._onCommit = this._onCommit.bind(this);
}
ReactWork.prototype.then = function(onCommit: () => mixed): void {
  if (this._didCommit) {
    onCommit();
    return;
  }
  let callbacks = this._callbacks;
  if (callbacks === null) {
    callbacks = this._callbacks = [];
  }
  callbacks.push(onCommit);
};
ReactWork.prototype._onCommit = function(): void {
  if (this._didCommit) {
    return;