From a68684d881047a6168b47029ca86b37d1712691a Mon Sep 17 00:00:00 2001
From: Yanzhen Yu <yanzhen@smartx.com>
Date: Wed, 16 Sep 2020 17:28:07 +0800
Subject: [PATCH] clean up __ln property when remove node

---
 src/record/mutation.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/record/mutation.ts b/src/record/mutation.ts
index 9bd5817a..ef781b9b 100644
--- a/src/record/mutation.ts
+++ b/src/record/mutation.ts
@@ -93,6 +93,9 @@ class DoubleLinkedList {
         current.next.previous = current.previous;
       }
     }
+    if (n.__ln) {
+      delete n.__ln;
+    }
     this.length--;
   }
 }