From b2a3521c2e284c9e56a19a612bfd17266b12cde0 Mon Sep 17 00:00:00 2001
From: Sergey Nikitin <mrnix@me.com>
Date: Tue, 22 Jun 2021 20:02:32 +0300
Subject: [PATCH] Memoize hook output value

Avoid re-rendering of components that use the hook.
---
 src/usePosition.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/usePosition.js b/src/usePosition.js
index 100781d..9948f5a 100644
--- a/src/usePosition.js
+++ b/src/usePosition.js
@@ -9,6 +9,10 @@ const defaultSettings = {
 export const usePosition = (watch = false, settings = defaultSettings) => {
   const [position, setPosition] = useState({});
   const [error, setError] = useState(null);
+  
+  const value = useMemo(() => {
+    return {...position, error};
+  }, [position, error]);
 
   const onChange = ({coords, timestamp}) => {
     setPosition({
@@ -45,5 +49,5 @@ export const usePosition = (watch = false, settings = defaultSettings) => {
     settings.maximumAge,
   ]);
 
-  return {...position, error};
+  return value;
 };