From 2bee9ff25ebfddc2fd5a23e3a32e3ffdcd42f539 Mon Sep 17 00:00:00 2001
From: Alexander Moiseyev <alexander@moiseyev.name>
Date: Fri, 24 Nov 2017 18:41:20 +0300
Subject: [PATCH] Add skip slicer functionality

In some cases we need to return undefined from custom slicer function (skip slicer)
In this case no need to call localStorage.setItem
---
 src/persistState.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/persistState.js b/src/persistState.js
index dfb63bb..4b53d2b 100644
--- a/src/persistState.js
+++ b/src/persistState.js
@@ -58,6 +58,10 @@ export default function persistState(paths, config) {
       const state = store.getState()
       const subset = slicerFn(state)
 
+      if (subset === undefined) {
+        return
+      }
+
       try {
         localStorage.setItem(key, serialize(subset))
       } catch (e) {