fixed error in react-navigation preventing declaring navigationOptions as a function (#23879)

types/react-navigation/index.d.ts

@@ -13,6 +13,7 @@
 //                 Sergei Butko: <https://github.com/svbutko>
 //                 Veit Lehmann: <https://github.com/levito>
 //                 Roberto Huertas: <https://github.com/robertohuertasm>
+//                 Steven Miller <https://github.com/YourGamesBeOver>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.6
 

types/react-navigation/react-navigation-tests.tsx

@@ -199,6 +199,26 @@ function renderBasicStackNavigator(): JSX.Element {
     );
 }
 
+const stackNavigatorConfigWithNavigationOptionsAsFunction: StackNavigatorConfig = {
+    mode: "card",
+    headerMode: "screen",
+    navigationOptions: ({navigationOptions, navigation, screenProps}) => (stackNavigatorScreenOptions),
+};
+
+const AdvancedStackNavigator = StackNavigator(
+    routeConfigMap,
+    stackNavigatorConfigWithNavigationOptionsAsFunction
+);
+
+function renderAdvancedStackNavigator(): JSX.Element {
+    return (
+        <AdvancedStackNavigator
+            ref={(ref: any) => { }}
+            style={viewStyle}
+        />
+    );
+}
+
 /**
  * Drawer navigator.
  */