From e3c2d699f694d9500ddee78571172a24f0e3b17a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADt=20Stanislav?= <slaweet@gmail.com>
Date: Thu, 19 Oct 2023 14:58:59 +0200
Subject: [PATCH] fix(compat): return value of vue compat set() (#9377)

According to https://v2.vuejs.org/v2/api/#Vue-set, Returns: the set value.
---
 packages/runtime-core/src/compat/instance.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/runtime-core/src/compat/instance.ts b/packages/runtime-core/src/compat/instance.ts
index 141f0bf0a0f..e6baeda6a8e 100644
--- a/packages/runtime-core/src/compat/instance.ts
+++ b/packages/runtime-core/src/compat/instance.ts
@@ -58,6 +58,7 @@ export interface LegacyPublicProperties {
 export function installCompatInstanceProperties(map: PublicPropertiesMap) {
   const set = (target: any, key: any, val: any) => {
     target[key] = val
+    return target[key]
   }
 
   const del = (target: any, key: any) => {