From 3d6460af8e9bc6183b9f858c23b67d82ecc5211e Mon Sep 17 00:00:00 2001
From: Serge Lebedev <angly.cat@gmail.com>
Date: Thu, 11 Oct 2018 00:27:00 +0600
Subject: [PATCH] [flow] Mark key in StackActions.replace as optional (#5073)

---
 packages/react-navigation/flow/react-navigation.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-navigation/flow/react-navigation.js b/packages/react-navigation/flow/react-navigation.js
index 096d04a8..b3d5c3b7 100644
--- a/packages/react-navigation/flow/react-navigation.js
+++ b/packages/react-navigation/flow/react-navigation.js
@@ -818,7 +818,7 @@ declare module 'react-navigation' {
       actions: Array<NavigationNavigateAction>,
     }) => NavigationResetAction,
     replace: (payload: {
-      key: string,
+      key?: string,
       routeName: string,
       params?: NavigationParams,
       action?: NavigationNavigateAction,