[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;