From 4d1436bb7903b4884849b4f4281fe3f4983d2d4d Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Fri, 27 Mar 2026 15:13:11 -0700
Subject: [PATCH] fix

---
 .../src/internal/client/reactivity/batch.js   | 52 +++++++++----------
 .../svelte/src/internal/client/runtime.js     |  7 +--
 2 files changed, 28 insertions(+), 31 deletions(-)

diff --git a/packages/svelte/src/internal/client/reactivity/batch.js b/packages/svelte/src/internal/client/reactivity/batch.js
index fc3eb25ca7..c764e6ed0c 100644
--- a/packages/svelte/src/internal/client/reactivity/batch.js
+++ b/packages/svelte/src/internal/client/reactivity/batch.js
@@ -266,7 +266,7 @@ export class Batch {
 	}
 
 	#process() {
-		console.group('process', this.id);
+		// console.group('process', this.id);
 
 		current_batch = this;
 
@@ -332,7 +332,7 @@ export class Batch {
 		legacy_updates = null;
 
 		if (this.#is_deferred() || this.#is_blocked()) {
-			console.log(this.#is_deferred() ? 'deferred' : 'blocked');
+			// console.log(this.#is_deferred() ? 'deferred' : 'blocked');
 			this.#defer_effects(render_effects);
 			this.#defer_effects(effects);
 
@@ -340,7 +340,7 @@ export class Batch {
 				reset_branch(e, t);
 			}
 		} else {
-			console.log('resolved');
+			// console.log('resolved');
 			if (this.#pending.size === 0) {
 				batches.delete(this);
 			}
@@ -389,7 +389,7 @@ export class Batch {
 			this.#commit();
 		}
 
-		console.groupEnd();
+		// console.groupEnd();
 	}
 
 	/**
@@ -773,28 +773,28 @@ export class Batch {
 			}
 		}
 
-		console.group('batch_values');
-		for (const [value, v] of batch_values) {
-			console.log(this.current.has(value), value.label, v);
-		}
-		console.groupEnd();
-
-		console.group('batch_cvs');
-		for (const [reaction, cv] of batch_cvs) {
-			console.log(
-				this.cvs.has(reaction),
-				cv,
-				reaction.deps?.map((d) => d.label),
-				reaction.label ?? reaction.fn
-			);
-		}
-		console.groupEnd();
-
-		console.group('batch_wvs');
-		for (const [value, wv] of batch_wvs) {
-			console.log(this.wvs.has(value), wv, value.label);
-		}
-		console.groupEnd();
+		// console.group('batch_values');
+		// for (const [value, v] of batch_values) {
+		// 	console.log(this.current.has(value), value.label, v);
+		// }
+		// console.groupEnd();
+
+		// console.group('batch_cvs');
+		// for (const [reaction, cv] of batch_cvs) {
+		// 	console.log(
+		// 		this.cvs.has(reaction),
+		// 		cv,
+		// 		reaction.deps?.map((d) => d.label),
+		// 		reaction.label ?? reaction.fn
+		// 	);
+		// }
+		// console.groupEnd();
+
+		// console.group('batch_wvs');
+		// for (const [value, wv] of batch_wvs) {
+		// 	console.log(this.wvs.has(value), wv, value.label);
+		// }
+		// console.groupEnd();
 	}
 
 	/**
diff --git a/packages/svelte/src/internal/client/runtime.js b/packages/svelte/src/internal/client/runtime.js
index 41fa443c8f..b383e736ed 100644
--- a/packages/svelte/src/internal/client/runtime.js
+++ b/packages/svelte/src/internal/client/runtime.js
@@ -645,11 +645,8 @@ export function get(signal) {
 			var value = derived.v;
 
 			// if the derived is dirty and has reactions, or depends on the values that just changed, re-execute
-			// (a derived can be maybe_dirty due to the effect destroy removing its last reaction)
-			if (
-				((derived.f & CLEAN) === 0 && derived.reactions !== null) ||
-				depends_on_old_values(derived)
-			) {
+			// (a derived can be dirty due to the effect destroy removing its last reaction)
+			if ((is_dirty(derived) && derived.reactions !== null) || depends_on_old_values(derived)) {
 				value = execute_derived(derived);
 			}