From 4ca297b35b72acf85cecc504c6626c65c1c261bc Mon Sep 17 00:00:00 2001
From: Yasunari Fujieda <edamame1224@gmail.com>
Date: Thu, 13 Jun 2024 01:32:06 +0900
Subject: [PATCH] fix(core): check if listener.handler is undefined (#10007)

---
 core/tauri/src/event/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/tauri/src/event/mod.rs b/core/tauri/src/event/mod.rs
index 3e2fd207c..2086a7d62 100644
--- a/core/tauri/src/event/mod.rs
+++ b/core/tauri/src/event/mod.rs
@@ -231,7 +231,7 @@ pub fn event_initialization_script(function: &str, listeners: &str) -> String {
         const listeners = (window['{listeners}'] && window['{listeners}'][eventData.event]) || []
         for (const id of ids) {{
           const listener = listeners[id]
-          if (listener) {{
+          if (listener && listener.handler) {{
             eventData.id = id
             listener.handler(eventData)
           }}