From 21b1da7664f05fae8ded43315ecf8189ffbb70d0 Mon Sep 17 00:00:00 2001
From: nklhrstv <me@nikolahristov.com>
Date: Fri, 16 Oct 2020 17:09:24 +0300
Subject: [PATCH] call cb in useDeepEqualMemo only when needed

---
 src/common/useDeepEqualMemo.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/common/useDeepEqualMemo.js b/src/common/useDeepEqualMemo.js
index f3ad91680..e0242603f 100644
--- a/src/common/useDeepEqualMemo.js
+++ b/src/common/useDeepEqualMemo.js
@@ -4,12 +4,16 @@ const React = require('react');
 const isEqual = require('lodash.isequal');
 
 const useDeepEqualMemo = (cb, deps) => {
-    const valueRef = React.useRef(cb());
+    const valueRef = React.useRef();
+    const mountedRef = React.useRef(false);
     const prevDepsRef = React.useRef(deps);
-    if (!isEqual(prevDepsRef.current, deps)) {
+    if (!mountedRef.current || !isEqual(prevDepsRef.current, deps)) {
         valueRef.current = cb();
         prevDepsRef.current = deps;
     }
+    React.useLayoutEffect(() => {
+        mountedRef.current = true;
+    }, []);
     return valueRef.current;
 };