From 87818df16db4129ccf470f63ebba3f546c5e0984 Mon Sep 17 00:00:00 2001
From: paoloricciuti <ricciutipaolo@gmail.com>
Date: Wed, 19 Nov 2025 18:08:59 +0100
Subject: [PATCH] fix: correctly migrate named self closing slots

---
 .changeset/fuzzy-fans-hammer.md                           | 5 +++++
 packages/svelte/src/compiler/migrate/index.js             | 8 +++++---
 .../migrate/samples/self-closing-named-slot/input.svelte  | 3 +++
 .../migrate/samples/self-closing-named-slot/output.svelte | 5 +++++
 4 files changed, 18 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/fuzzy-fans-hammer.md
 create mode 100644 packages/svelte/tests/migrate/samples/self-closing-named-slot/input.svelte
 create mode 100644 packages/svelte/tests/migrate/samples/self-closing-named-slot/output.svelte

diff --git a/.changeset/fuzzy-fans-hammer.md b/.changeset/fuzzy-fans-hammer.md
new file mode 100644
index 0000000000..24af7fa8f5
--- /dev/null
+++ b/.changeset/fuzzy-fans-hammer.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: correctly migrate named self closing slots
diff --git a/packages/svelte/src/compiler/migrate/index.js b/packages/svelte/src/compiler/migrate/index.js
index eb0e4eff8c..0d4691e9d6 100644
--- a/packages/svelte/src/compiler/migrate/index.js
+++ b/packages/svelte/src/compiler/migrate/index.js
@@ -1058,8 +1058,6 @@ const template = {
 		handle_identifier(node, state, path);
 	},
 	RegularElement(node, { state, path, next }) {
-		migrate_slot_usage(node, path, state);
-		handle_events(node, state);
 		// Strip off any namespace from the beginning of the node name.
 		const node_name = node.name.replace(/[a-zA-Z-]*:/g, '');
 
@@ -1067,8 +1065,12 @@ const template = {
 			let trimmed_position = node.end - 2;
 			while (state.str.original.charAt(trimmed_position - 1) === ' ') trimmed_position--;
 			state.str.remove(trimmed_position, node.end - 1);
-			state.str.appendRight(node.end, `</${node.name}>`);
+			state.str.appendLeft(node.end, `</${node.name}>`);
 		}
+
+		migrate_slot_usage(node, path, state);
+		handle_events(node, state);
+
 		next();
 	},
 	SvelteSelf(node, { state, next }) {
diff --git a/packages/svelte/tests/migrate/samples/self-closing-named-slot/input.svelte b/packages/svelte/tests/migrate/samples/self-closing-named-slot/input.svelte
new file mode 100644
index 0000000000..33ca4e3b9f
--- /dev/null
+++ b/packages/svelte/tests/migrate/samples/self-closing-named-slot/input.svelte
@@ -0,0 +1,3 @@
+<Component>
+	<div slot="test" />
+</Component>
\ No newline at end of file
diff --git a/packages/svelte/tests/migrate/samples/self-closing-named-slot/output.svelte b/packages/svelte/tests/migrate/samples/self-closing-named-slot/output.svelte
new file mode 100644
index 0000000000..6655bc9dd2
--- /dev/null
+++ b/packages/svelte/tests/migrate/samples/self-closing-named-slot/output.svelte
@@ -0,0 +1,5 @@
+<Component>
+	{#snippet test()}
+		<div ></div>
+	{/snippet}
+</Component>
\ No newline at end of file