From 04aa3122d3f00d73953943f3db04137613c8c1b4 Mon Sep 17 00:00:00 2001
From: iwusong <wusong3918@gmail.com>
Date: Fri, 4 Mar 2022 17:13:22 +0800
Subject: [PATCH] fix(runtime-core): fix event listener is added erroneously to
 instance's props fix #5520

---
 packages/runtime-core/src/componentProps.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/packages/runtime-core/src/componentProps.ts b/packages/runtime-core/src/componentProps.ts
index 7ed8aeee4a1..fa0839663b6 100644
--- a/packages/runtime-core/src/componentProps.ts
+++ b/packages/runtime-core/src/componentProps.ts
@@ -224,6 +224,11 @@ export function updateProps(
       const propsToUpdate = instance.vnode.dynamicProps!
       for (let i = 0; i < propsToUpdate.length; i++) {
         let key = propsToUpdate[i]
+      // if the prop key is a declared emit event listener.
+      // use continue to skip this prop
+        if (isEmitListener(instance.emitsOptions, key)){
+          continue
+        }
         // PROPS flag guarantees rawProps to be non-null
         const value = rawProps![key]
         if (options) {