From 630f0402c133f7e6cf054394f1ca6188ebeee7ff Mon Sep 17 00:00:00 2001
From: Zihua Li <i@zihua.li>
Date: Thu, 4 Apr 2024 21:12:56 +0800
Subject: [PATCH] Allow ref blots to be null

---
 CHANGELOG.md                | 2 ++
 src/blot/abstract/blot.ts   | 4 ++--
 src/blot/abstract/parent.ts | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77b0430..7f18a55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # [Unreleased]
 
+- Allow ref blots to be null
+
 # 3.0.0-rc.0
 
 - Keep identify names in built code bundle
diff --git a/src/blot/abstract/blot.ts b/src/blot/abstract/blot.ts
index a1bad9d..257b484 100644
--- a/src/blot/abstract/blot.ts
+++ b/src/blot/abstract/blot.ts
@@ -96,8 +96,8 @@ export interface Parent extends Blot {
     index: number,
     length: number,
   ): T[];
-  insertBefore(child: Blot, refNode?: Blot): void;
-  moveChildren(parent: Parent, refNode?: Blot): void;
+  insertBefore(child: Blot, refNode?: Blot | null): void;
+  moveChildren(parent: Parent, refNode?: Blot | null): void;
   path(index: number, inclusive?: boolean): [Blot, number][];
   removeChild(child: Blot): void;
   unwrap(): void;
diff --git a/src/blot/abstract/parent.ts b/src/blot/abstract/parent.ts
index c5e58a9..2b1c5fd 100644
--- a/src/blot/abstract/parent.ts
+++ b/src/blot/abstract/parent.ts
@@ -243,7 +243,7 @@ class ParentBlot extends ShadowBlot implements Parent {
     }, 0);
   }
 
-  public moveChildren(targetParent: Parent, refNode?: Blot): void {
+  public moveChildren(targetParent: Parent, refNode?: Blot | null): void {
     this.children.forEach((child) => {
       targetParent.insertBefore(child, refNode);
     });