From 95e06ac3d091b6746be80d13840884dc7894b01c Mon Sep 17 00:00:00 2001
From: Dominic Gannaway <trueadm@users.noreply.github.com>
Date: Thu, 16 May 2019 18:59:59 +0100
Subject: [PATCH] Event API: isTargetWithinEventResponderScope on unmounted
 event components (#15672)

---
 packages/react-dom/src/events/DOMEventResponderSystem.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-dom/src/events/DOMEventResponderSystem.js b/packages/react-dom/src/events/DOMEventResponderSystem.js
index aae2ab55db..8834a21d59 100644
--- a/packages/react-dom/src/events/DOMEventResponderSystem.js
+++ b/packages/react-dom/src/events/DOMEventResponderSystem.js
@@ -197,7 +197,7 @@ const eventResponderContext: ReactResponderContext = {
         }
         if (
           fiber.tag === EventComponent &&
-          fiber.stateNode.responder === responder
+          (fiber.stateNode === null || fiber.stateNode.responder === responder)
         ) {
           return false;
         }