From 9b34d8ff76906bbc5be0de3a9c4e66991bfdb896 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Fri, 3 Apr 2026 11:32:46 -0400
Subject: [PATCH] tidy up

---
 packages/svelte/src/internal/client/runtime.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/packages/svelte/src/internal/client/runtime.js b/packages/svelte/src/internal/client/runtime.js
index 54dd9315ae..8e83c6d37a 100644
--- a/packages/svelte/src/internal/client/runtime.js
+++ b/packages/svelte/src/internal/client/runtime.js
@@ -171,9 +171,13 @@ export function is_dirty(reaction) {
 
 		if ((flags & CONNECTED) !== 0) {
 			if (active_batch !== null) {
-				if (active_batch.values?.has(reaction)) return false;
+				if (active_batch.values?.has(/** @type {Derived} */ (reaction))) {
+					return false;
+				}
 			} else {
-				if ((reaction.f & CLEAN) !== 0) return false;
+				if ((reaction.f & CLEAN) !== 0) {
+					return false;
+				}
 			}
 		}
 	}