From ef35812723d402050db97c3041bb2e7132663023 Mon Sep 17 00:00:00 2001
From: Ulion <ulion2002@gmail.com>
Date: Fri, 15 Jan 2021 21:22:28 +0800
Subject: [PATCH] Fix setNodes undefined value since automerge does not handle
 undefined value correctly. (#49)

---
 packages/bridge/src/apply/node/setNode.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/bridge/src/apply/node/setNode.ts b/packages/bridge/src/apply/node/setNode.ts
index 6c89d63..65c43e1 100644
--- a/packages/bridge/src/apply/node/setNode.ts
+++ b/packages/bridge/src/apply/node/setNode.ts
@@ -9,7 +9,12 @@ const setNode = (doc: SyncValue, op: SetNodeOperation): SyncValue => {
   const { newProperties } = op
 
   for (let key in newProperties) {
-    node[key] = newProperties[key]
+    const value = newProperties[key]
+    if (value !== undefined) {
+      node[key] = value
+    } else {
+      delete node[key]
+    }
   }
 
   return doc