From 335314aec6843511dc0f53ba73518df7910e6d9a Mon Sep 17 00:00:00 2001
From: huoteng <huoteng_2021@qq.com>
Date: Thu, 8 Dec 2022 13:34:04 +0800
Subject: [PATCH] fix(history): do not record unchanged data

---
 packages/designer/src/document/history.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/designer/src/document/history.ts b/packages/designer/src/document/history.ts
index 96a1e40f7..eaac946b1 100644
--- a/packages/designer/src/document/history.ts
+++ b/packages/designer/src/document/history.ts
@@ -41,6 +41,12 @@ export class History<T = NodeSchema> {
       if (this.asleep) return;
       untracked(() => {
         const log = this.currentSerialization.serialize(data);
+
+        // do not record unchanged data
+        if (this.session.data === log) {
+          return;
+        }
+
         if (this.session.isActive()) {
           this.session.log(log);
         } else {