Reconciler should inject its own version into DevTools hook (facebook#21268)

Author: Brian Vaughn

packages/react-reconciler/src/ReactFiberReconciler.new.js

@@ -95,7 +95,7 @@ import {
   findHostInstancesForRefresh,
 } from './ReactFiberHotReloading.new';
 import {markRenderScheduled} from './SchedulingProfiler';
-
+import ReactVersion from 'shared/ReactVersion';
 export {registerMutableSourceForHydration} from './ReactMutableSource.new';
 export {createPortal} from './ReactPortal';
 export {
@@ -739,5 +739,8 @@ export function injectIntoDevTools(devToolsConfig: DevToolsConfig): boolean {
     setRefreshHandler: __DEV__ ? setRefreshHandler : null,
     // Enables DevTools to append owner stacks to error messages in DEV mode.
     getCurrentFiber: __DEV__ ? getCurrentFiberForDevTools : null,
+    // Enables DevTools to detect reconciler version rather than renderer version
+    // which may not match for third party renderers.
+    reconcilerVersion: ReactVersion,
   });
 }

packages/react-reconciler/src/ReactFiberReconciler.old.js

@@ -95,7 +95,7 @@ import {
   findHostInstancesForRefresh,
 } from './ReactFiberHotReloading.old';
 import {markRenderScheduled} from './SchedulingProfiler';
-
+import ReactVersion from 'shared/ReactVersion';
 export {registerMutableSourceForHydration} from './ReactMutableSource.old';
 export {createPortal} from './ReactPortal';
 export {
@@ -739,5 +739,8 @@ export function injectIntoDevTools(devToolsConfig: DevToolsConfig): boolean {
     setRefreshHandler: __DEV__ ? setRefreshHandler : null,
     // Enables DevTools to append owner stacks to error messages in DEV mode.
     getCurrentFiber: __DEV__ ? getCurrentFiberForDevTools : null,
+    // Enables DevTools to detect reconciler version rather than renderer version
+    // which may not match for third party renderers.
+    reconcilerVersion: ReactVersion,
   });
 }