From efc69e37c445a11649b63d814abd7f592dedb5d4 Mon Sep 17 00:00:00 2001
From: skie1997 <skie1997@outlook.com>
Date: Thu, 26 Oct 2023 14:21:37 +0800
Subject: [PATCH] fix: event on error after release

---
 packages/vchart/src/core/vchart.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/vchart/src/core/vchart.ts b/packages/vchart/src/core/vchart.ts
index 3c71ce8b43..7ab9ade6ce 100644
--- a/packages/vchart/src/core/vchart.ts
+++ b/packages/vchart/src/core/vchart.ts
@@ -989,6 +989,9 @@ export class VChart implements IVChart {
   on(eType: EventType, handler: EventCallback<EventParams>): void;
   on(eType: EventType, query: EventQuery, handler: EventCallback<EventParams>): void;
   on(eType: EventType, query: EventQuery | EventCallback<EventParams>, handler?: EventCallback<EventParams>): void {
+    if (!this._userEvents || this._userEvents.length === 0) {
+      return;
+    }
     this._userEvents.push({
       eType,
       query: typeof query === 'function' ? null : query,