[Fabric] Fix targetAsInstance dispatchEvent "cannot read property of …

…null" (#18156) * Fix Fabric targetAsInstance dispatchEvent: targetFiber stateNode is null in some cases Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
facebook · Feb 28, 2020 · ae60caa · ae60caa
1 parent d72700f
commit ae60caa
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/packages/react-native-renderer/src/ReactFabricEventEmitter.js b/packages/react-native-renderer/src/ReactFabricEventEmitter.js
@@ -87,7 +87,11 @@ export function dispatchEvent(
   let eventTarget = null;
   if (enableNativeTargetAsInstance) {
     if (targetFiber != null) {
-      eventTarget = targetFiber.stateNode.canonical;
+      const stateNode = targetFiber.stateNode;
+      // Guard against Fiber being unmounted
+      if (stateNode != null) {
+        eventTarget = stateNode.canonical;
+      }
     }
   } else {
     eventTarget = nativeEvent.target;