From b1134c8a34f96be2817cb780c4bd23b2025b4c35 Mon Sep 17 00:00:00 2001
From: Satyajit Sahoo <satyajit.happy@gmail.com>
Date: Thu, 1 Jul 2021 03:06:37 +0200
Subject: [PATCH] fix: fix typechecking in linking config

---
 packages/core/src/types.tsx | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/packages/core/src/types.tsx b/packages/core/src/types.tsx
index 5ea9aed2..7ac03bf2 100644
--- a/packages/core/src/types.tsx
+++ b/packages/core/src/types.tsx
@@ -632,10 +632,9 @@ export type PathConfig<ParamList extends {}> = {
 };
 
 export type PathConfigMap<ParamList extends {}> = {
-  [RouteName in keyof ParamList]?: ParamList[RouteName] extends NavigatorScreenParams<
-    infer T,
-    any
-  >
+  [RouteName in keyof ParamList]?: NonNullable<
+    ParamList[RouteName]
+  > extends NavigatorScreenParams<infer T, any>
     ? string | PathConfig<T>
     : string | Omit<PathConfig<{}>, 'screens' | 'initialRouteName'>;
 };