From: daiwei <daiwei521@126.com>
Date: Thu, 10 Jul 2025 08:31:28 +0000 (+0800)
Subject: fix(ref): store old value in RefImpl when value changes
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=refs%2Fpull%2F13607%2Fhead;p=thirdparty%2Fvuejs%2Fcore.git

fix(ref): store old value in RefImpl when value changes
---

diff --git a/packages/reactivity/src/ref.ts b/packages/reactivity/src/ref.ts
index 92a4ba7f1d..eb77900319 100644
--- a/packages/reactivity/src/ref.ts
+++ b/packages/reactivity/src/ref.ts
@@ -168,6 +168,7 @@ class RefImpl<T = any> implements ReactiveNode {
     if (hasChanged(newValue, oldValue)) {
       this.flags |= _ReactiveFlags.Dirty
       this._rawValue = newValue
+      this._oldValue = oldValue
       this._value =
         !useDirectValue && this._wrap ? this._wrap(newValue) : newValue
       const subs = this.subs