From d77905d7884f96bb7af8cc0265f3382535b39e42 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Thu, 3 Oct 2024 07:44:40 -0400
Subject: [PATCH] fix: exclude type-only props from instance exports when
 migrating (#13485)

---
 .changeset/seven-wombats-retire.md                           | 5 +++++
 packages/svelte/src/compiler/migrate/index.js                | 2 +-
 .../svelte/tests/migrate/samples/accessors/output.svelte     | 2 --
 3 files changed, 6 insertions(+), 3 deletions(-)
 create mode 100644 .changeset/seven-wombats-retire.md

diff --git a/.changeset/seven-wombats-retire.md b/.changeset/seven-wombats-retire.md
new file mode 100644
index 0000000000..60fb2bdf87
--- /dev/null
+++ b/.changeset/seven-wombats-retire.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: exclude type-only props from instance exports when migrating
diff --git a/packages/svelte/src/compiler/migrate/index.js b/packages/svelte/src/compiler/migrate/index.js
index 1ae100c656..d60b2984f5 100644
--- a/packages/svelte/src/compiler/migrate/index.js
+++ b/packages/svelte/src/compiler/migrate/index.js
@@ -273,7 +273,7 @@ export function migrate(source) {
 		if (state.props.length > 0 && state.analysis.accessors) {
 			str.appendRight(
 				insertion_point,
-				`\n${indent}export {${state.props.reduce((acc, prop) => (prop.slot_name ? acc : `${acc}\n${indent}\t${prop.local},`), '')}\n${indent}}\n`
+				`\n${indent}export {${state.props.reduce((acc, prop) => (prop.slot_name || prop.type_only ? acc : `${acc}\n${indent}\t${prop.local},`), '')}\n${indent}}\n`
 			);
 		}
 
diff --git a/packages/svelte/tests/migrate/samples/accessors/output.svelte b/packages/svelte/tests/migrate/samples/accessors/output.svelte
index 67b0737d0e..83f318c0c8 100644
--- a/packages/svelte/tests/migrate/samples/accessors/output.svelte
+++ b/packages/svelte/tests/migrate/samples/accessors/output.svelte
@@ -9,14 +9,12 @@
 	}
 
 	let {
-		test,
 		count = 0,
 		stuff,
 		cool
 	}: Props = $props();
 
 	export {
-		test,
 		count,
 		stuff,
 	}