From cd1281663819259fa23c7ae606757ed802e25e5c Mon Sep 17 00:00:00 2001
From: Yanzhen Yu <yanzhen@smartx.com>
Date: Wed, 1 Apr 2026 12:00:00 +0800
Subject: [PATCH] close #140 transform mutated attributes

---
 package.json           | 2 +-
 src/record/observer.ts | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/package.json b/package.json
index fffe795f..d18ce023 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
   "dependencies": {
     "@types/smoothscroll-polyfill": "^0.3.0",
     "mitt": "^1.1.3",
-    "rrweb-snapshot": "^0.7.20",
+    "rrweb-snapshot": "^0.7.21",
     "smoothscroll-polyfill": "^0.4.3"
   }
 }
diff --git a/src/record/observer.ts b/src/record/observer.ts
index b282d1a9..a6b130f0 100644
--- a/src/record/observer.ts
+++ b/src/record/observer.ts
@@ -1,4 +1,4 @@
-import { INode, serializeNodeWithId } from 'rrweb-snapshot';
+import { INode, serializeNodeWithId, transformAttribute } from 'rrweb-snapshot';
 import {
   mirror,
   throttle,
@@ -130,7 +130,11 @@ function initMutationObserver(
             attributes.push(item);
           }
           // overwrite attribute if the mutations was triggered in same time
-          item.attributes[attributeName!] = value;
+          item.attributes[attributeName!] = transformAttribute(
+            document,
+            attributeName!,
+            value!,
+          );
           break;
         }
         case 'childList': {