trailing comma fix

Author: DmitryBochkarev

Cargo.lock

@@ -4,7 +4,7 @@ exclude = ["fuzz"]
 
 [package]
 name = "tsrun"
-version = "0.1.20"
+version = "0.1.21"
 edition = "2024"
 description = "A TypeScript interpreter designed for embedding in applications"
 license = "MIT"
@@ -93,4 +93,4 @@ debug = true
 strip = false
 
 [build-dependencies]
-trampoline-parser = { version = "0.1.1" }
+trampoline-parser = { version = "0.1.2" }

Cargo.toml

@@ -64,6 +64,37 @@ fn test_trailing_comma_in_function_call() {
     );
 }
 
+#[test]
+fn test_trailing_comma_in_function_call_multiline() {
+    // Multiline call with trailing comma
+    assert_eq!(
+        eval("function foo(a: string, b: string): string { return a + b; } foo(\n'hello',\n'world',\n)"),
+        JsValue::from("helloworld")
+    );
+
+    // Full example: object with function expression + multiline call with trailing comma
+    assert_eq!(
+        eval(
+            r#"
+export const processor = {
+  elementHeader: function (element: any): any {
+    return element;
+  },
+};
+function test(a: string, b: string): string {
+  return foo(
+    a,
+    b,
+  );
+}
+function foo(a: string, b: string): string { return a + b; }
+test("hello", "world");
+"#
+        ),
+        JsValue::from("helloworld")
+    );
+}
+
 #[test]
 fn test_function_call() {
     assert_eq!(