fix

packages/svelte/src/internal/client/reactivity/batch.js

@@ -101,17 +101,17 @@ export class Batch {
 		} else {
 			for (const e of this.render_effects) set_signal_status(e, CLEAN);
 			for (const e of this.effects) set_signal_status(e, CLEAN);
+		}
 
-			for (const [source, value] of current_values) {
-				source.v = value;
-			}
-
-			for (const effect of this.async_effects) {
-				update_effect(effect);
-			}
+		for (const [source, value] of current_values) {
+			source.v = value;
+		}
 
-			this.async_effects = [];
+		for (const effect of this.async_effects) {
+			update_effect(effect);
 		}
+
+		this.async_effects = [];
 	}
 
 	/**

packages/svelte/tests/runtime-runes/samples/async-expression/_config.js

@@ -1,10 +1,6 @@
 import { flushSync, tick } from 'svelte';
-import { deferred } from '../../../../src/internal/shared/utils.js';
 import { test } from '../../test';
 
-/** @type {ReturnType<typeof deferred>} */
-let d;
-
 export default test({
 	html: `
 		<button>reset</button>
@@ -13,10 +9,11 @@ export default test({
 		<p>pending</p>
 	`,
 
-	async test({ assert, target }) {
+	async test({ assert, target, raf }) {
 		const [reset, hello, goodbye] = target.querySelectorAll('button');
 
 		flushSync(() => hello.click());
+		raf.tick(0);
 		await Promise.resolve();
 		await Promise.resolve();
 		await tick();
@@ -32,6 +29,7 @@ export default test({
 		);
 
 		flushSync(() => reset.click());
+		raf.tick(0);
 		await tick();
 		assert.htmlEqual(
 			target.innerHTML,
@@ -40,10 +38,13 @@ export default test({
 				<button>hello</button>
 				<button>goodbye</button>
 				<h1>hello</h1>
+				<p>updating...</p>
 			`
 		);
 
 		flushSync(() => goodbye.click());
+		await Promise.resolve();
+		raf.tick(0);
 		await tick();
 		assert.htmlEqual(
 			target.innerHTML,

packages/svelte/tests/runtime-runes/samples/async-expression/main.svelte

@@ -9,6 +9,10 @@
 <svelte:boundary>
 	<h1>{await deferred.promise}</h1>
 
+	{#if $effect.pending()}
+		<p>updating...</p>
+	{/if}
+
 	{#snippet pending()}
 		<p>pending</p>
 	{/snippet}