From b4f5477678436f3432008fd2ff79ff31e58babb2 Mon Sep 17 00:00:00 2001
From: NikolaBorislavovHristov <hristovnikola@protonmail.com>
Date: Thu, 5 Dec 2019 13:30:16 +0200
Subject: [PATCH] useDeepEqualState hook implemented

---
 src/common/index.js             |  2 ++
 src/common/useDeepEqualState.js | 13 +++++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 src/common/useDeepEqualState.js

diff --git a/src/common/index.js b/src/common/index.js
index 320a614d1..f8052ba47 100644
--- a/src/common/index.js
+++ b/src/common/index.js
@@ -18,6 +18,7 @@ const TextInput = require('./TextInput');
 const routesRegexp = require('./routesRegexp');
 const useAnimationFrame = require('./useAnimationFrame');
 const useBinaryState = require('./useBinaryState');
+const useDeepEqualState = require('./useDeepEqualState');
 const useFullscreen = require('./useFullscreen');
 const useInLibrary = require('./useInLibrary');
 const useLiveRef = require('./useLiveRef');
@@ -47,6 +48,7 @@ module.exports = {
     routesRegexp,
     useAnimationFrame,
     useBinaryState,
+    useDeepEqualState,
     useFullscreen,
     useInLibrary,
     useLiveRef,
diff --git a/src/common/useDeepEqualState.js b/src/common/useDeepEqualState.js
new file mode 100644
index 000000000..8adf750b5
--- /dev/null
+++ b/src/common/useDeepEqualState.js
@@ -0,0 +1,13 @@
+const React = require('react');
+const isEqual = require('lodash.isequal');
+
+const useDeepEqualState = (initialState) => {
+    return React.useReducer((prevState, nextState) => {
+        return isEqual(prevState, nextState) ?
+            prevState
+            :
+            nextState;
+    }, initialState);
+};
+
+module.exports = useDeepEqualState;