From 017b5f33ba99e69c14129e759c380bccac323d4f Mon Sep 17 00:00:00 2001
From: Avery Pierce <avery.pierce@spin.pm>
Date: Wed, 3 Mar 2021 15:09:30 -0600
Subject: [PATCH] fix generic type of useNavigationParam

---
 src/Hooks.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Hooks.ts b/src/Hooks.ts
index 0cdae3b..e9a8d4a 100644
--- a/src/Hooks.ts
+++ b/src/Hooks.ts
@@ -17,7 +17,7 @@ import {
   EventType,
 } from 'react-navigation';
 
-export function useNavigation<S>(): NavigationScreenProp<S & NavigationRoute> {
+export function useNavigation<S, P = NavigationParams>(): NavigationScreenProp<S & NavigationRoute, P> {
   const navigation = useContext(NavigationContext) as any; // TODO typing?
   if (!navigation) {
     throw new Error(
@@ -29,10 +29,10 @@ export function useNavigation<S>(): NavigationScreenProp<S & NavigationRoute> {
   return navigation;
 }
 
-export function useNavigationParam<T extends keyof NavigationParams>(
-  paramName: T
+export function useNavigationParam<Params extends NavigationParams = NavigationParams>(
+  paramName: keyof Params
 ) {
-  return useNavigation().getParam(paramName);
+  return useNavigation<unknown, Params>().getParam(paramName) as Params[typeof paramName] | undefined
 }
 
 export function useNavigationState() {