From 7477979bd13f58cb32c52d61eb59e285340da906 Mon Sep 17 00:00:00 2001
From: Clansty <i@gao4.pw>
Date: Tue, 8 Mar 2022 14:53:17 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20event.prevParticipant=20=E4=B8=BA=20null?=
 =?UTF-8?q?=20=E6=97=B6=E6=8A=A5=E9=94=99?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/controllers/ConfigController.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/controllers/ConfigController.ts b/src/controllers/ConfigController.ts
index 33be764..cc672eb 100644
--- a/src/controllers/ConfigController.ts
+++ b/src/controllers/ConfigController.ts
@@ -95,7 +95,8 @@ export default class ConfigController {
   };
 
   private handleChannelParticipant = async (event: Api.UpdateChannelParticipant) => {
-    if ('userId' in event.prevParticipant && event.prevParticipant.userId.eq(this.tgBot.me.id) &&
+    if (event.prevParticipant && 'userId' in event.prevParticipant &&
+      event.prevParticipant.userId.eq(this.tgBot.me.id) &&
       !event.newParticipant) {
       this.log.warn(`群 ${event.channelId.toString()} 删除了`);
       const pair = this.instance.forwardPairs.find(event.channelId);