diff --git a/.changeset/giant-wombats-allow.md b/.changeset/giant-wombats-allow.md
new file mode 100644
index 000000000000..e9d152a946d4
--- /dev/null
+++ b/.changeset/giant-wombats-allow.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: allow to pass in TS preference to migration
diff --git a/packages/svelte/src/compiler/migrate/index.js b/packages/svelte/src/compiler/migrate/index.js
index ceb2ad5da231..fc271f864d27 100644
--- a/packages/svelte/src/compiler/migrate/index.js
+++ b/packages/svelte/src/compiler/migrate/index.js
@@ -39,10 +39,10 @@ class MigrationError extends Error {
  * May throw an error if the code is too complex to migrate automatically.
  *
  * @param {string} source
- * @param {{filename?: string}} [options]
+ * @param {{ filename?: string, use_ts?: boolean }} [options]
  * @returns {{ code: string; }}
  */
-export function migrate(source, { filename } = {}) {
+export function migrate(source, { filename, use_ts } = {}) {
 	let og_source = source;
 	try {
 		has_migration_task = false;
@@ -115,9 +115,12 @@ export function migrate(source, { filename } = {}) {
 			derived_components: new Map(),
 			derived_labeled_statements: new Set(),
 			has_svelte_self: false,
-			uses_ts: !!parsed.instance?.attributes.some(
-				(attr) => attr.name === 'lang' && /** @type {any} */ (attr).value[0].data === 'ts'
-			)
+			uses_ts:
+				// Some people could use jsdoc but have a tsconfig.json, so double-check file for jsdoc indicators
+				(use_ts && !source.includes('@type {')) ||
+				!!parsed.instance?.attributes.some(
+					(attr) => attr.name === 'lang' && /** @type {any} */ (attr).value[0].data === 'ts'
+				)
 		};
 
 		if (parsed.module) {
diff --git a/packages/svelte/tests/migrate/samples/slot-use_ts/_config.js b/packages/svelte/tests/migrate/samples/slot-use_ts/_config.js
new file mode 100644
index 000000000000..dbc620d66e66
--- /dev/null
+++ b/packages/svelte/tests/migrate/samples/slot-use_ts/_config.js
@@ -0,0 +1,5 @@
+import { test } from '../../test';
+
+export default test({
+	use_ts: true
+});
diff --git a/packages/svelte/tests/migrate/samples/slot-use_ts/input.svelte b/packages/svelte/tests/migrate/samples/slot-use_ts/input.svelte
new file mode 100644
index 000000000000..0385342cef1b
--- /dev/null
+++ b/packages/svelte/tests/migrate/samples/slot-use_ts/input.svelte
@@ -0,0 +1 @@
+<slot />
\ No newline at end of file
diff --git a/packages/svelte/tests/migrate/samples/slot-use_ts/output.svelte b/packages/svelte/tests/migrate/samples/slot-use_ts/output.svelte
new file mode 100644
index 000000000000..3e92f5ceb124
--- /dev/null
+++ b/packages/svelte/tests/migrate/samples/slot-use_ts/output.svelte
@@ -0,0 +1,9 @@
+<script>
+	interface Props {
+		children?: import('svelte').Snippet;
+	}
+
+	let { children }: Props = $props();
+</script>
+
+{@render children?.()}
\ No newline at end of file
diff --git a/packages/svelte/tests/migrate/test.ts b/packages/svelte/tests/migrate/test.ts
index 048c8696a429..a4b48f2fa77d 100644
--- a/packages/svelte/tests/migrate/test.ts
+++ b/packages/svelte/tests/migrate/test.ts
@@ -6,6 +6,7 @@ import { suite, type BaseTest } from '../suite.js';
 
 interface ParserTest extends BaseTest {
 	skip_filename?: boolean;
+	use_ts?: boolean;
 	logs?: any[];
 	errors?: any[];
 }
@@ -32,7 +33,8 @@ const { test, run } = suite<ParserTest>(async (config, cwd) => {
 	}
 
 	const actual = migrate(input, {
-		filename: config.skip_filename ? undefined : `output.svelte`
+		filename: config.skip_filename ? undefined : `output.svelte`,
+		use_ts: config.use_ts
 	}).code;
 
 	if (config.logs) {
diff --git a/packages/svelte/types/index.d.ts b/packages/svelte/types/index.d.ts
index 4e57607efc9f..559cf1b26538 100644
--- a/packages/svelte/types/index.d.ts
+++ b/packages/svelte/types/index.d.ts
@@ -1292,8 +1292,9 @@ declare module 'svelte/compiler' {
 	 * May throw an error if the code is too complex to migrate automatically.
 	 *
 	 * */
-	export function migrate(source: string, { filename }?: {
+	export function migrate(source: string, { filename, use_ts }?: {
 		filename?: string;
+		use_ts?: boolean;
 	} | undefined): {
 		code: string;
 	};