From 8a5c58b39a662bb895d270cf2821b47b7564da1f Mon Sep 17 00:00:00 2001
From: Miguel Alatzar <migbot@users.noreply.github.com>
Date: Thu, 24 Sep 2020 10:50:42 -0700
Subject: [PATCH] [MM-28973] Prevent destructuring of undefined (#4832)

* Prevent destructuring of undefined

* Do the same for thread drafts
---
 app/reducers/views/channel.js | 2 +-
 app/reducers/views/thread.js  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/reducers/views/channel.js b/app/reducers/views/channel.js
index 14430b7b8..b4edd8e4f 100644
--- a/app/reducers/views/channel.js
+++ b/app/reducers/views/channel.js
@@ -62,7 +62,7 @@ function handleSetTempUploadFileForPostDraft(state, action) {
 
     const tempFiles = action.clientIds.map((temp) => ({...temp, loading: true}));
     const files = [
-        ...state[action.channelId].files,
+        ...state[action.channelId]?.files || [],
         ...tempFiles,
     ];
 
diff --git a/app/reducers/views/thread.js b/app/reducers/views/thread.js
index 952c72171..6e51c4d3e 100644
--- a/app/reducers/views/thread.js
+++ b/app/reducers/views/thread.js
@@ -73,7 +73,7 @@ function handleSetTempUploadFilesForPostDraft(state, action) {
 
     const tempFiles = action.clientIds.map((temp) => ({...temp, loading: true}));
     const files = [
-        ...state[action.rootId].files,
+        ...state[action.rootId]?.files || [],
         ...tempFiles,
     ];