From cbde6b646e566f9d5f8ab920eb3c690783586369 Mon Sep 17 00:00:00 2001
From: Berkeley Martinez <Berkeley@robotie.com>
Date: Tue, 5 Jan 2016 12:05:01 -0800
Subject: [PATCH] Fix for name-spaced transformer

---
 common/utils/index.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/common/utils/index.js b/common/utils/index.js
index 0456c3bbbe4..85f49c563f9 100644
--- a/common/utils/index.js
+++ b/common/utils/index.js
@@ -4,10 +4,13 @@ export function nameSpacedTransformer(ns, transformer) {
   }
   return (state) => {
     const newState = transformer(state[ns]);
+
     // nothing has changed
-    if (newState === state[ns]) {
-      return state;
+    // noop
+    if (!newState || newState === state[ns]) {
+      return null;
     }
+
     return { ...state, [ns]: newState };
   };
 }