From 1f1674229c5c5f547138f65a41c8f9a94b88fcb9 Mon Sep 17 00:00:00 2001
From: Joel Schneider <joel.schneider@webascender.com>
Date: Fri, 24 Apr 2020 07:13:13 -0400
Subject: [PATCH] Deep clone data nodes

Otherwise immer will mutate the object as we remove nodes
---
 packages/core/src/editor/actions.ts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/packages/core/src/editor/actions.ts b/packages/core/src/editor/actions.ts
index 2159ee800..82a8ddd75 100644
--- a/packages/core/src/editor/actions.ts
+++ b/packages/core/src/editor/actions.ts
@@ -169,9 +169,11 @@ export const Actions = (
           !query.node(targetNode.id).isTopLevelCanvas(),
           "Cannot delete a Canvas that is not a direct child of another Canvas"
         );
-        targetNode.data.nodes!.forEach((childId) => {
-          _("delete")(childId);
-        });
+        if (targetNode.data.nodes) {
+          [...targetNode.data.nodes].forEach((childId) => {
+            _("delete")(childId);
+          });
+        }
       }
 
       const parentNode = state.nodes[targetNode.data.parent],