From 3c522930eedd9f4ea2d48ef12819ca1fd423166a Mon Sep 17 00:00:00 2001
From: James <james@trbl.design>
Date: Thu, 30 Jul 2020 10:04:17 -0400
Subject: [PATCH] fixes cases where hooks return undefined

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

diff --git a/src/fields/performFieldOperations.js b/src/fields/performFieldOperations.js
index c9260942cc..fddf009855 100644
--- a/src/fields/performFieldOperations.js
+++ b/src/fields/performFieldOperations.js
@@ -242,13 +242,17 @@ async function performFieldOperations(entityConfig, args) {
       await field.hooks[hook].reduce(async (priorHook, currentHook) => {
         await priorHook;
 
-        resultingData[field.name] = await currentHook({
+        const hookedValue = await currentHook({
           value: data[field.name],
           originalDoc: fullOriginalDoc,
           data: fullData,
           operation,
           req,
-        }) || resultingData[field.name];
+        });
+
+        if (hookedValue !== undefined) {
+          resultingData[field.name] = hookedValue;
+        }
       }, Promise.resolve());
     }
   };