From 01a6fcef208d4d1ff5fb88259cccb61410c98a89 Mon Sep 17 00:00:00 2001
From: steak-zhuo <zhuoqinyue@gmail.com>
Date: Sun, 8 Jan 2023 13:08:30 +0800
Subject: [PATCH] =?UTF-8?q?=E8=A1=A5=E5=85=85=E5=AE=8C=E6=95=B4=E5=AF=B9?=
 =?UTF-8?q?=E5=BA=94=E7=9A=84ts=E7=B1=BB=E5=9E=8B?=
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---
 codes/typescript/module/ListNode.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/codes/typescript/module/ListNode.ts b/codes/typescript/module/ListNode.ts
index a5e30340..ef7da663 100644
--- a/codes/typescript/module/ListNode.ts
+++ b/codes/typescript/module/ListNode.ts
@@ -20,7 +20,7 @@ export default class ListNode {
      * @param arr
      * @return
      */
-    arrToLinkedList(arr: number[]) {
+    arrToLinkedList(arr: number[]): ListNode | null {
         const dum: ListNode = new ListNode(0);
         let head = dum;
         for (const val of arr) {