Remove injectComponentTree from unstable-native-dependencies, add EventPluginHub (facebook#13598)

* Remove injectComponentTree from unstable-native-dependencies, add
EventPluginHub

injectComponentTree was exposed for react-native-web, but wasn't
actually being used by the project. They were using EventPluginHub
through ReactDOM's secret internals, but that was removed in facebook#13539

This removes the unused injectComponentTree export, refactors the
ResponderEventPlugin test so it doesn't depend on it, and also adds
EventPluginHub to the exports to unbreak react-native-web

* Re-export injectEventPluginsByName from ReactDOM internals

Author: aweary

packages/events/__tests__/ResponderEventPlugin-test.internal.js

@@ -12,12 +12,21 @@
 const {HostComponent} = require('shared/ReactWorkTags');
 
 let EventPluginHub;
+let EventPluginUtils;
 let ResponderEventPlugin;
 
 const touch = function(nodeHandle, i) {
   return {target: nodeHandle, identifier: i};
 };
 
+function injectComponentTree(ComponentTree) {
+  EventPluginUtils.setComponentTree(
+    ComponentTree.getFiberCurrentPropsFromNode,
+    ComponentTree.getInstanceFromNode,
+    ComponentTree.getNodeFromInstance,
+  );
+}
+
 /**
  * @param {NodeHandle} nodeHandle @see NodeHandle. Handle of target.
  * @param {Array<Touch>} touches All active touches.
@@ -395,8 +404,7 @@ describe('ResponderEventPlugin', () => {
 
     const ReactDOMUnstableNativeDependencies = require('react-dom/unstable-native-dependencies');
     EventPluginHub = require('events/EventPluginHub');
-    const injectComponentTree =
-      ReactDOMUnstableNativeDependencies.injectComponentTree;
+    EventPluginUtils = require('events/EventPluginUtils');
     ResponderEventPlugin =
       ReactDOMUnstableNativeDependencies.ResponderEventPlugin;
 

packages/react-dom/src/client/ReactDOM.js

@@ -745,6 +745,7 @@ const ReactDOM: Object = {
       ReactDOMComponentTree.getInstanceFromNode,
       ReactDOMComponentTree.getNodeFromInstance,
       ReactDOMComponentTree.getFiberCurrentPropsFromNode,
+      EventPluginHub.injection.injectEventPluginsByName,
       EventPluginRegistry.eventNameDispatchConfigs,
       EventPropagators.accumulateTwoPhaseDispatches,
       EventPropagators.accumulateDirectDispatches,

packages/react-dom/src/test-utils/ReactTestUtils.js

@@ -31,6 +31,7 @@ const [
   /* eslint-disable no-unused-vars */
   getNodeFromInstance,
   getFiberCurrentPropsFromNode,
+  injectEventPluginsByName,
   /* eslint-enable no-unused-vars */
   eventNameDispatchConfigs,
   accumulateTwoPhaseDispatches,

packages/react-dom/src/unstable-native-dependencies/ReactDOMUnstableNativeDependencies.js

@@ -10,26 +10,23 @@ import * as EventPluginUtils from 'events/EventPluginUtils';
 import ResponderEventPlugin from 'events/ResponderEventPlugin';
 import ResponderTouchHistoryStore from 'events/ResponderTouchHistoryStore';
 
-// This is used by react-native-web.
-export function injectComponentTree(ComponentTree) {
-  EventPluginUtils.setComponentTree(
-    ComponentTree.getFiberCurrentPropsFromNode,
-    ComponentTree.getInstanceFromNode,
-    ComponentTree.getNodeFromInstance,
-  );
-}
-
-export {ResponderEventPlugin, ResponderTouchHistoryStore};
-
 // Inject react-dom's ComponentTree into this module.
 // Keep in sync with ReactDOM.js and ReactTestUtils.js:
 const [
   getInstanceFromNode,
   getNodeFromInstance,
   getFiberCurrentPropsFromNode,
+  injectEventPluginsByName,
 ] = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events;
+
 EventPluginUtils.setComponentTree(
   getFiberCurrentPropsFromNode,
   getInstanceFromNode,
   getNodeFromInstance,
 );
+
+export {
+  ResponderEventPlugin,
+  ResponderTouchHistoryStore,
+  injectEventPluginsByName,
+};