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diff --git a/node_modules/react-dom/lib/ReactBrowserEventEmitter.js b/node_modules/react-dom/lib/ReactBrowserEventEmitter.js
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+/**
+ * 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.
+ *
+ */
+
+'use strict';
+
+var _assign = require('object-assign');
+
+var EventPluginRegistry = require('./EventPluginRegistry');
+var ReactEventEmitterMixin = require('./ReactEventEmitterMixin');
+var ViewportMetrics = require('./ViewportMetrics');
+
+var getVendorPrefixedEventName = require('./getVendorPrefixedEventName');
+var isEventSupported = require('./isEventSupported');
+
+/**
+ * Summary of `ReactBrowserEventEmitter` event handling:
+ *
+ *  - Top-level delegation is used to trap most native browser events. This
+ *    may only occur in the main thread and is the responsibility of
+ *    ReactEventListener, which is injected and can therefore support pluggable
+ *    event sources. This is the only work that occurs in the main thread.
+ *
+ *  - We normalize and de-duplicate events to account for browser quirks. This
+ *    may be done in the worker thread.
+ *
+ *  - Forward these native events (with the associated top-level type used to
+ *    trap it) to `EventPluginHub`, which in turn will ask plugins if they want
+ *    to extract any synthetic events.
+ *
+ *  - The `EventPluginHub` will then process each event by annotating them with
+ *    "dispatches", a sequence of listeners and IDs that care about that event.
+ *
+ *  - The `EventPluginHub` then dispatches the events.
+ *
+ * Overview of React and the event system:
+ *
+ * +------------+    .
+ * |    DOM     |    .
+ * +------------+    .
+ *       |           .
+ *       v           .
+ * +------------+    .
+ * | ReactEvent |    .
+ * |  Listener  |    .
+ * +------------+    .                         +-----------+
+ *       |           .               +--------+|SimpleEvent|
+ *       |           .               |         |Plugin     |
+ * +-----|------+    .               v         +-----------+
+ * |     |      |    .    +--------------+                    +------------+
+ * |     +-----------.--->|EventPluginHub|                    |    Event   |
+ * |            |    .    |              |     +-----------+  | Propagators|
+ * | ReactEvent |    .    |              |     |TapEvent   |  |------------|
+ * |  Emitter   |    .    |              |<---+|Plugin     |  |other plugin|
+ * |            |    .    |              |     +-----------+  |  utilities |
+ * |     +-----------.--->|              |                    +------------+
+ * |     |      |    .    +--------------+
+ * +-----|------+    .                ^        +-----------+
+ *       |           .                |        |Enter/Leave|
+ *       +           .                +-------+|Plugin     |
+ * +-------------+   .                         +-----------+
+ * | application |   .
+ * |-------------|   .
+ * |             |   .
+ * |             |   .
+ * +-------------+   .
+ *                   .
+ *    React Core     .  General Purpose Event Plugin System
+ */
+
+var hasEventPageXY;
+var alreadyListeningTo = {};
+var isMonitoringScrollValue = false;
+var reactTopListenersCounter = 0;
+
+// For events like 'submit' which don't consistently bubble (which we trap at a
+// lower node than `document`), binding at `document` would cause duplicate
+// events so we don't include them here
+var topEventMapping = {
+  topAbort: 'abort',
+  topAnimationEnd: getVendorPrefixedEventName('animationend') || 'animationend',
+  topAnimationIteration: getVendorPrefixedEventName('animationiteration') || 'animationiteration',
+  topAnimationStart: getVendorPrefixedEventName('animationstart') || 'animationstart',
+  topBlur: 'blur',
+  topCanPlay: 'canplay',
+  topCanPlayThrough: 'canplaythrough',
+  topChange: 'change',
+  topClick: 'click',
+  topCompositionEnd: 'compositionend',
+  topCompositionStart: 'compositionstart',
+  topCompositionUpdate: 'compositionupdate',
+  topContextMenu: 'contextmenu',
+  topCopy: 'copy',
+  topCut: 'cut',
+  topDoubleClick: 'dblclick',
+  topDrag: 'drag',
+  topDragEnd: 'dragend',
+  topDragEnter: 'dragenter',
+  topDragExit: 'dragexit',
+  topDragLeave: 'dragleave',
+  topDragOver: 'dragover',
+  topDragStart: 'dragstart',
+  topDrop: 'drop',
+  topDurationChange: 'durationchange',
+  topEmptied: 'emptied',
+  topEncrypted: 'encrypted',
+  topEnded: 'ended',
+  topError: 'error',
+  topFocus: 'focus',
+  topInput: 'input',
+  topKeyDown: 'keydown',
+  topKeyPress: 'keypress',
+  topKeyUp: 'keyup',
+  topLoadedData: 'loadeddata',
+  topLoadedMetadata: 'loadedmetadata',
+  topLoadStart: 'loadstart',
+  topMouseDown: 'mousedown',
+  topMouseMove: 'mousemove',
+  topMouseOut: 'mouseout',
+  topMouseOver: 'mouseover',
+  topMouseUp: 'mouseup',
+  topPaste: 'paste',
+  topPause: 'pause',
+  topPlay: 'play',
+  topPlaying: 'playing',
+  topProgress: 'progress',
+  topRateChange: 'ratechange',
+  topScroll: 'scroll',
+  topSeeked: 'seeked',
+  topSeeking: 'seeking',
+  topSelectionChange: 'selectionchange',
+  topStalled: 'stalled',
+  topSuspend: 'suspend',
+  topTextInput: 'textInput',
+  topTimeUpdate: 'timeupdate',
+  topTouchCancel: 'touchcancel',
+  topTouchEnd: 'touchend',
+  topTouchMove: 'touchmove',
+  topTouchStart: 'touchstart',
+  topTransitionEnd: getVendorPrefixedEventName('transitionend') || 'transitionend',
+  topVolumeChange: 'volumechange',
+  topWaiting: 'waiting',
+  topWheel: 'wheel'
+};
+
+/**
+ * To ensure no conflicts with other potential React instances on the page
+ */
+var topListenersIDKey = '_reactListenersID' + String(Math.random()).slice(2);
+
+function getListeningForDocument(mountAt) {
+  // In IE8, `mountAt` is a host object and doesn't have `hasOwnProperty`
+  // directly.
+  if (!Object.prototype.hasOwnProperty.call(mountAt, topListenersIDKey)) {
+    mountAt[topListenersIDKey] = reactTopListenersCounter++;
+    alreadyListeningTo[mountAt[topListenersIDKey]] = {};
+  }
+  return alreadyListeningTo[mountAt[topListenersIDKey]];
+}
+
+/**
+ * `ReactBrowserEventEmitter` is used to attach top-level event listeners. For
+ * example:
+ *
+ *   EventPluginHub.putListener('myID', 'onClick', myFunction);
+ *
+ * This would allocate a "registration" of `('onClick', myFunction)` on 'myID'.
+ *
+ * @internal
+ */
+var ReactBrowserEventEmitter = _assign({}, ReactEventEmitterMixin, {
+
+  /**
+   * Injectable event backend
+   */
+  ReactEventListener: null,
+
+  injection: {
+    /**
+     * @param {object} ReactEventListener
+     */
+    injectReactEventListener: function (ReactEventListener) {
+      ReactEventListener.setHandleTopLevel(ReactBrowserEventEmitter.handleTopLevel);
+      ReactBrowserEventEmitter.ReactEventListener = ReactEventListener;
+    }
+  },
+
+  /**
+   * Sets whether or not any created callbacks should be enabled.
+   *
+   * @param {boolean} enabled True if callbacks should be enabled.
+   */
+  setEnabled: function (enabled) {
+    if (ReactBrowserEventEmitter.ReactEventListener) {
+      ReactBrowserEventEmitter.ReactEventListener.setEnabled(enabled);
+    }
+  },
+
+  /**
+   * @return {boolean} True if callbacks are enabled.
+   */
+  isEnabled: function () {
+    return !!(ReactBrowserEventEmitter.ReactEventListener && ReactBrowserEventEmitter.ReactEventListener.isEnabled());
+  },
+
+  /**
+   * We listen for bubbled touch events on the document object.
+   *
+   * Firefox v8.01 (and possibly others) exhibited strange behavior when
+   * mounting `onmousemove` events at some node that was not the document
+   * element. The symptoms were that if your mouse is not moving over something
+   * contained within that mount point (for example on the background) the
+   * top-level listeners for `onmousemove` won't be called. However, if you
+   * register the `mousemove` on the document object, then it will of course
+   * catch all `mousemove`s. This along with iOS quirks, justifies restricting
+   * top-level listeners to the document object only, at least for these
+   * movement types of events and possibly all events.
+   *
+   * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
+   *
+   * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but
+   * they bubble to document.
+   *
+   * @param {string} registrationName Name of listener (e.g. `onClick`).
+   * @param {object} contentDocumentHandle Document which owns the container
+   */
+  listenTo: function (registrationName, contentDocumentHandle) {
+    var mountAt = contentDocumentHandle;
+    var isListening = getListeningForDocument(mountAt);
+    var dependencies = EventPluginRegistry.registrationNameDependencies[registrationName];
+
+    for (var i = 0; i < dependencies.length; i++) {
+      var dependency = dependencies[i];
+      if (!(isListening.hasOwnProperty(dependency) && isListening[dependency])) {
+        if (dependency === 'topWheel') {
+          if (isEventSupported('wheel')) {
+            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topWheel', 'wheel', mountAt);
+          } else if (isEventSupported('mousewheel')) {
+            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topWheel', 'mousewheel', mountAt);
+          } else {
+            // Firefox needs to capture a different mouse scroll event.
+            // @see http://www.quirksmode.org/dom/events/tests/scroll.html
+            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topWheel', 'DOMMouseScroll', mountAt);
+          }
+        } else if (dependency === 'topScroll') {
+
+          if (isEventSupported('scroll', true)) {
+            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent('topScroll', 'scroll', mountAt);
+          } else {
+            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topScroll', 'scroll', ReactBrowserEventEmitter.ReactEventListener.WINDOW_HANDLE);
+          }
+        } else if (dependency === 'topFocus' || dependency === 'topBlur') {
+
+          if (isEventSupported('focus', true)) {
+            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent('topFocus', 'focus', mountAt);
+            ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent('topBlur', 'blur', mountAt);
+          } else if (isEventSupported('focusin')) {
+            // IE has `focusin` and `focusout` events which bubble.
+            // @see http://www.quirksmode.org/blog/archives/2008/04/delegating_the.html
+            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topFocus', 'focusin', mountAt);
+            ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent('topBlur', 'focusout', mountAt);
+          }
+
+          // to make sure blur and focus event listeners are only attached once
+          isListening.topBlur = true;
+          isListening.topFocus = true;
+        } else if (topEventMapping.hasOwnProperty(dependency)) {
+          ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(dependency, topEventMapping[dependency], mountAt);
+        }
+
+        isListening[dependency] = true;
+      }
+    }
+  },
+
+  trapBubbledEvent: function (topLevelType, handlerBaseName, handle) {
+    return ReactBrowserEventEmitter.ReactEventListener.trapBubbledEvent(topLevelType, handlerBaseName, handle);
+  },
+
+  trapCapturedEvent: function (topLevelType, handlerBaseName, handle) {
+    return ReactBrowserEventEmitter.ReactEventListener.trapCapturedEvent(topLevelType, handlerBaseName, handle);
+  },
+
+  /**
+   * Protect against document.createEvent() returning null
+   * Some popup blocker extensions appear to do this:
+   * https://github.com/facebook/react/issues/6887
+   */
+  supportsEventPageXY: function () {
+    if (!document.createEvent) {
+      return false;
+    }
+    var ev = document.createEvent('MouseEvent');
+    return ev != null && 'pageX' in ev;
+  },
+
+  /**
+   * Listens to window scroll and resize events. We cache scroll values so that
+   * application code can access them without triggering reflows.
+   *
+   * ViewportMetrics is only used by SyntheticMouse/TouchEvent and only when
+   * pageX/pageY isn't supported (legacy browsers).
+   *
+   * NOTE: Scroll events do not bubble.
+   *
+   * @see http://www.quirksmode.org/dom/events/scroll.html
+   */
+  ensureScrollValueMonitoring: function () {
+    if (hasEventPageXY === undefined) {
+      hasEventPageXY = ReactBrowserEventEmitter.supportsEventPageXY();
+    }
+    if (!hasEventPageXY && !isMonitoringScrollValue) {
+      var refresh = ViewportMetrics.refreshScrollValues;
+      ReactBrowserEventEmitter.ReactEventListener.monitorScrollValue(refresh);
+      isMonitoringScrollValue = true;
+    }
+  }
+
+});
+
+module.exports = ReactBrowserEventEmitter;
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