diff --git a/crates/oxide_builtins/src/array/common.rs b/crates/oxide_builtins/src/array/common.rs
index 050bbff7..96eeda4c 100644
--- a/crates/oxide_builtins/src/array/common.rs
+++ b/crates/oxide_builtins/src/array/common.rs
@@ -195,6 +195,7 @@ pub(crate) fn is_constructor_value(c: JsValue) -> bool {
         && !c_obj.is_arrow()
         && !(c_obj.native_fn().is_some() && c_obj.type_tag != JsObject::OBJ_TYPE_CONSTRUCTOR)
 }
+
 /// 校验回调参数为可调用函数对象（判空与 is_function 均须通过），不是则抛 TypeError。
 pub(crate) fn require_callback<H: VmHost>(vm: &mut H, callback_val: JsValue) -> Result<JsValue, JsValue> {
     if !callback_val.is_object() {
diff --git a/crates/oxide_builtins/src/array/immutable.rs b/crates/oxide_builtins/src/array/immutable.rs
index c6ee22fe..e166a0ed 100644
--- a/crates/oxide_builtins/src/array/immutable.rs
+++ b/crates/oxide_builtins/src/array/immutable.rs
@@ -69,6 +69,7 @@ pub fn array_with<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
     }
     NativeResult::Ok(JsValue::from_js_object(new_arr))
 }
+
 /// 返回按比较语义排序的新数组，原数组不变（`Array.prototype.toSorted`）。
 ///
 /// # 边界与前提
@@ -112,6 +113,7 @@ pub fn array_to_sorted<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
     }
     NativeResult::Ok(JsValue::from_js_object(new_arr))
 }
+
 /// 按 start/deleteCount/插入值三元 splice 语义返回新数组，原数组不变
 ///（`Array.prototype.toSpliced`）。
 ///
@@ -141,7 +143,6 @@ pub fn array_to_spliced<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResult {
     } else {
         relative_start.min(n as f64) as usize
     };
-    // 缺省规则：start 与 deleteCount 都缺省 -> 拷贝；仅缺省 deleteCount -> 删到末尾。
     let delete_count = if args.len() <= 1 {
         0
     } else if args.len() == 2 {