From 031e29b1cf14f643f3b52c52f77785e71f011708 Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Tue, 6 Oct 2020 14:29:43 -0400
Subject: from last

---
 src/fields/util.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/fields')

diff --git a/src/fields/util.ts b/src/fields/util.ts
index b6128f5e6..6e72675db 100644
--- a/src/fields/util.ts
+++ b/src/fields/util.ts
@@ -382,8 +382,8 @@ export function updateFunction(target: any, prop: any, value: any, receiver: any
         if (!(value instanceof CursorField) && !(value?.some?.((v: any) => v instanceof CursorField))) {
             UndoManager.AddEvent(diff?.op === "$addToSet" ?
                 {
-                    redo: () => receiver[prop].push(...(newValue as List<Doc>)),
-                    undo: action(() => (newValue as List<Doc>).forEach(doc => {
+                    redo: () => receiver[prop].push(...diff.items),
+                    undo: action(() => diff.items.forEach((doc: Doc) => {
                         const ind = receiver[prop].indexOf(doc);
                         ind !== -1 && receiver[prop].splice(ind, 1);
                     }))
-- 
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