From aded259f1b46fde55680372fb6c73094c9229aeb Mon Sep 17 00:00:00 2001
From: Matt Dunn-Rankin <mattdunnrankin@khanacademy.org>
Date: Sat, 25 Apr 2020 04:46:40 -0700
Subject: [PATCH] even more robust handling of unfitting items

---
 src/useOutfitState.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/useOutfitState.js b/src/useOutfitState.js
index d15242f..9938e7d 100644
--- a/src/useOutfitState.js
+++ b/src/useOutfitState.js
@@ -176,6 +176,9 @@ function findItemConflicts(itemIdToAdd, state, apolloClient) {
     },
   });
   const itemToAdd = items.find((i) => i.id === itemIdToAdd);
+  if (!itemToAdd.appearanceOn) {
+    return [];
+  }
   const itemToAddZoneIds = itemToAdd.appearanceOn.layers.map((l) => l.zone.id);
   const wornItems = Array.from(wornItemIds).map((id) =>
     items.find((i) => i.id === id)
@@ -183,6 +186,9 @@ function findItemConflicts(itemIdToAdd, state, apolloClient) {
 
   const conflictingIds = [];
   for (const wornItem of wornItems) {
+    if (!wornItem.appearanceOn) {
+      continue;
+    }
     const wornItemZoneIds = wornItem.appearanceOn.layers.map((l) => l.zone.id);
 
     const hasConflict = wornItemZoneIds.some((zid) =>