From 7e0ac2fcb84c3d1e9e524aa382d85188141cba9b Mon Sep 17 00:00:00 2001
From: yuki0418 <keryuuki0418@gmail.com>
Date: Sat, 27 Sep 2025 18:23:16 +0900
Subject: [PATCH 1/3] fix: allow await in svelte boundary without pending

---
 .changeset/poor-flies-serve.md                      |  5 +++++
 .../3-transform/server/visitors/SvelteBoundary.js   | 13 +++++++++++--
 .../samples/async-svelte-boundary/_expected.html    |  1 +
 .../samples/async-svelte-boundary/main.svelte       |  4 ++++
 4 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/poor-flies-serve.md
 create mode 100644 packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/_expected.html
 create mode 100644 packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/main.svelte

diff --git a/.changeset/poor-flies-serve.md b/.changeset/poor-flies-serve.md
new file mode 100644
index 000000000000..7837e55dda00
--- /dev/null
+++ b/.changeset/poor-flies-serve.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: allow await in svelte boundary without pending
diff --git a/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js b/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js
index b914c96f4e31..eaa594591ded 100644
--- a/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js
+++ b/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js
@@ -2,7 +2,13 @@
 /** @import { AST } from '#compiler' */
 /** @import { ComponentContext } from '../types' */
 import * as b from '#compiler/builders';
-import { block_close, block_open, block_open_else, build_attribute_value } from './shared/utils.js';
+import {
+	block_close,
+	block_open,
+	block_open_else,
+	build_attribute_value,
+	create_async_block
+} from './shared/utils.js';
 
 /**
  * @param {AST.SvelteBoundary} node
@@ -37,6 +43,9 @@ export function SvelteBoundary(node, context) {
 		context.state.template.push(block_open_else, pending, block_close);
 	} else {
 		const block = /** @type {BlockStatement} */ (context.visit(node.fragment));
-		context.state.template.push(block_open, block, block_close);
+		const statement = node.fragment.metadata.has_await 
+			? create_async_block(b.block([block]))
+			: block;
+		context.state.template.push(block_open, statement, block_close);
 	}
 }
diff --git a/packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/_expected.html b/packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/_expected.html
new file mode 100644
index 000000000000..5be0be37f235
--- /dev/null
+++ b/packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/_expected.html
@@ -0,0 +1 @@
+<div>this should work</div>
\ No newline at end of file
diff --git a/packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/main.svelte b/packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/main.svelte
new file mode 100644
index 000000000000..c4cde60119c0
--- /dev/null
+++ b/packages/svelte/tests/server-side-rendering/samples/async-svelte-boundary/main.svelte
@@ -0,0 +1,4 @@
+<svelte:boundary>
+    {@const x = await 'this should work'}
+    <div>{x}</div>
+</svelte:boundary>
\ No newline at end of file

From e9ad72a431d94df332c9597af98084f2a637d208 Mon Sep 17 00:00:00 2001
From: yuki0418 <keryuuki0418@gmail.com>
Date: Sat, 27 Sep 2025 18:25:04 +0900
Subject: [PATCH 2/3] fix changeset comment

---
 .changeset/poor-flies-serve.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.changeset/poor-flies-serve.md b/.changeset/poor-flies-serve.md
index 7837e55dda00..1ac13a88abea 100644
--- a/.changeset/poor-flies-serve.md
+++ b/.changeset/poor-flies-serve.md
@@ -2,4 +2,4 @@
 'svelte': patch
 ---
 
-fix: allow await in svelte boundary without pending
+fix: allow await in svelte:boundary without pending

From bde563b85827169ce240f369afc704164ce69f90 Mon Sep 17 00:00:00 2001
From: yuki0418 <keryuuki0418@gmail.com>
Date: Mon, 29 Sep 2025 09:24:36 +0900
Subject: [PATCH 3/3] fix format

---
 .../phases/3-transform/server/visitors/SvelteBoundary.js        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js b/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js
index eaa594591ded..39e6912be07d 100644
--- a/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js
+++ b/packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteBoundary.js
@@ -43,7 +43,7 @@ export function SvelteBoundary(node, context) {
 		context.state.template.push(block_open_else, pending, block_close);
 	} else {
 		const block = /** @type {BlockStatement} */ (context.visit(node.fragment));
-		const statement = node.fragment.metadata.has_await 
+		const statement = node.fragment.metadata.has_await
 			? create_async_block(b.block([block]))
 			: block;
 		context.state.template.push(block_open, statement, block_close);