From 09e84efe8cff44e957e25cb728aa47023053f462 Mon Sep 17 00:00:00 2001
From: Dan Rose <DanOfTheRoses@gmail.com>
Date: Wed, 11 Dec 2024 13:23:07 -0600
Subject: [PATCH] WatchCallback returns `void`, not `any`

This matches the [documentation](https://github.com/vuejs/docs/blob/fe96839c9fe1ce82150e5a4396235cb3d1fb76e2/src/api/reactivity-core.md?plain=1#L378-L382) and better expresses that the return value is (mostly) ignored.
---
 packages/reactivity/src/watch.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/reactivity/src/watch.ts b/packages/reactivity/src/watch.ts
index 659121ca34b..349f8178d63 100644
--- a/packages/reactivity/src/watch.ts
+++ b/packages/reactivity/src/watch.ts
@@ -42,7 +42,7 @@ export type WatchCallback<V = any, OV = any> = (
   value: V,
   oldValue: OV,
   onCleanup: OnCleanup,
-) => any
+) => void
 
 export type OnCleanup = (cleanupFn: () => void) => void