fix: error in snippets with type annotations

.changeset/wise-mice-hang.md

@@ -0,0 +1,5 @@
+---
+"svelte-eslint-parser": patch
+---
+
+fix: error in snippets with type annotations

src/parser/converts/block.ts

@@ -651,13 +651,18 @@ export function convertSnippetBlock(
     ...ctx.getConvertLocation({ start: nodeStart, end: node.end }),
   };
 
+  let beforeClosingParen: ESTree.Node;
+  if (node.parameters.length > 0) {
+    const lastParam = node.parameters[
+      node.parameters.length - 1
+    ] as ESTree.Pattern & { typeAnnotation?: ESTree.Node };
+    beforeClosingParen = lastParam.typeAnnotation ?? lastParam;
+  } else {
+    beforeClosingParen = node.expression;
+  }
   const closeParenIndex = ctx.code.indexOf(
     ")",
-    getWithLoc(
-      node.parameters.length > 0
-        ? node.parameters[node.parameters.length - 1]
-        : node.expression,
-    ).end,
+    getWithLoc(beforeClosingParen).end,
   );
 
   const scopeKind =

tests/fixtures/parser/ast/svelte5/ts-snippet03-input.svelte

@@ -0,0 +1,11 @@
+<script lang="ts">
+	function hello() {
+		console.log('Hello');
+	}
+</script>
+
+{@render foo({ onclick: hello })}
+
+{#snippet foo(o: {onclick: () => void})}
+  <button on:click={o.onclick}>Click me</button>
+{/snippet}