From 25bc6549eb7eb487ddb761c228a27e1046c627fc Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Fri, 21 Jan 2022 09:41:54 +0800
Subject: [PATCH] perf(reactivity): optimize effect run condition

---
 packages/reactivity/src/effect.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/reactivity/src/effect.ts b/packages/reactivity/src/effect.ts
index 351fc0c2633..bb4ed09fa32 100644
--- a/packages/reactivity/src/effect.ts
+++ b/packages/reactivity/src/effect.ts
@@ -75,7 +75,7 @@ export class ReactiveEffect<T = any> {
     if (!this.active) {
       return this.fn()
     }
-    if (!effectStack.includes(this)) {
+    if (!effectStack.length || !effectStack.includes(this)) {
       try {
         effectStack.push((activeEffect = this))
         enableTracking()