From 2d9acea80aae1fe59914e706d045072e14cd442f Mon Sep 17 00:00:00 2001
From: Andrew Linfoot <andrewlinfoot@users.noreply.github.com>
Date: Thu, 15 Jun 2017 18:30:20 -0700
Subject: [PATCH] Allow null values to be passed to navigation.goBack()

---
 types/react-navigation/index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/types/react-navigation/index.d.ts b/types/react-navigation/index.d.ts
index d4ec6dc2d4..7d26058ad3 100644
--- a/types/react-navigation/index.d.ts
+++ b/types/react-navigation/index.d.ts
@@ -360,7 +360,7 @@ export interface NavigationProp<S, A> {
 }
 
 export type NavigationScreenProp<S, A> = NavigationProp<S, A> & {
-  goBack: (routeKey?: string) => boolean,
+  goBack: (routeKey?: string | null) => boolean,
   navigate: (routeName: string, params?: NavigationParams, action?: NavigationAction) => boolean,
   setParams: (newParams: NavigationParams) => boolean,
 }