From c84ed10af59bedf22423b9c8b712b1b4a973ad4a Mon Sep 17 00:00:00 2001
From: Maciej Ziarkowski <maciej.ziarkowski@gmail.com>
Date: Thu, 14 Nov 2019 16:08:25 +0000
Subject: [PATCH] Handle unknown fields

---
 .../frontend/building/edit-history/building-edit-summary.tsx    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/src/frontend/building/edit-history/building-edit-summary.tsx b/app/src/frontend/building/edit-history/building-edit-summary.tsx
index 909bb8bd..2ac230cd 100644
--- a/app/src/frontend/building/edit-history/building-edit-summary.tsx
+++ b/app/src/frontend/building/edit-history/building-edit-summary.tsx
@@ -30,7 +30,7 @@ function enrichHistoryEntries(forwardPatch: object, reversePatch: object) {
     return Object
         .entries(forwardPatch)
         .map(([key, value]) => {
-            const info = dataFields[key] as DataFieldDefinition;
+            const info = dataFields[key] || {} as DataFieldDefinition;
             return {
                 title: info.title || `Unknown field (${key})`,
                 category: info.category || Category.Unknown,