From e49f81f409ff40f0adfc4665648839bf4c740e14 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Sat, 19 Apr 2025 17:52:52 -0400
Subject: [PATCH] dont use flushSync

---
 packages/svelte/src/internal/client/reactivity/forks.js         | 2 +-
 .../tests/runtime-runes/samples/async-attribute/_config.js      | 1 +
 .../svelte/tests/runtime-runes/samples/async-derived/_config.js | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/svelte/src/internal/client/reactivity/forks.js b/packages/svelte/src/internal/client/reactivity/forks.js
index af5555a571..632361966e 100644
--- a/packages/svelte/src/internal/client/reactivity/forks.js
+++ b/packages/svelte/src/internal/client/reactivity/forks.js
@@ -114,7 +114,7 @@ export class Fork {
 	 */
 	run(fn) {
 		active_fork = this;
-		flushSync(fn);
+		fn();
 	}
 
 	increment() {
diff --git a/packages/svelte/tests/runtime-runes/samples/async-attribute/_config.js b/packages/svelte/tests/runtime-runes/samples/async-attribute/_config.js
index 0c77424e4e..f256e6a43c 100644
--- a/packages/svelte/tests/runtime-runes/samples/async-attribute/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/async-attribute/_config.js
@@ -27,6 +27,7 @@ export default test({
 		assert.htmlEqual(p.outerHTML, '<p class="cool">hello</p>');
 
 		flushSync(() => neat.click());
+		await Promise.resolve();
 		await tick();
 		assert.htmlEqual(p.outerHTML, '<p class="neat">hello</p>');
 	}
diff --git a/packages/svelte/tests/runtime-runes/samples/async-derived/_config.js b/packages/svelte/tests/runtime-runes/samples/async-derived/_config.js
index 1e041c3f62..d573cf6246 100644
--- a/packages/svelte/tests/runtime-runes/samples/async-derived/_config.js
+++ b/packages/svelte/tests/runtime-runes/samples/async-derived/_config.js
@@ -28,6 +28,7 @@ export default test({
 
 		flushSync(() => increment.click());
 		await Promise.resolve();
+		await Promise.resolve();
 		await tick();
 		assert.htmlEqual(p.innerHTML, '2a');
 
@@ -36,6 +37,7 @@ export default test({
 
 		flushSync(() => resolve_b.click());
 		await Promise.resolve();
+		await Promise.resolve();
 		await tick();
 		assert.htmlEqual(p.innerHTML, '2b');