close #491 check whether link node is head

2021-02-27 13:46:29 +08:00
parent 860ff38e90
commit 2c6be72f35
1 changed files with 5 additions and 1 deletions
--- a/src/record/mutation.ts
+++ b/src/record/mutation.ts
@@ -62,7 +62,11 @@ class DoubleLinkedList {
      if (current) {
        current.previous = node;
      }
-    } else if (n.nextSibling && isNodeInLinkedList(n.nextSibling)) {
+    } else if (
+      n.nextSibling &&
+      isNodeInLinkedList(n.nextSibling) &&
+      n.nextSibling.__ln.previous
+    ) {
      const current = n.nextSibling.__ln.previous;
      node.previous = current;
      node.next = n.nextSibling.__ln;