LibJS: Preserve information about local variables declaration kind

This is required for upcoming change where we want to emit ThrowIfTDZ for assignment expressions only for lexical declarations.
Author: https://github.com/kalenikaliaksandr Commit: db480b1f0c Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/4616 Reviewed-by: https://github.com/awesomekling
2025-06-08 05:27:14 +09:00 · 2025-05-05 21:53:19 +03:00 · 2025-05-05 21:53:19 +03:00 · db480b1f0c · 2025-05-06 10:07:32 +00:00
commit db480b1f0c
parent 2774068ca0
11 changed files with 83 additions and 40 deletions
--- a/Libraries/LibJS/LocalVariable.h
+++ b/Libraries/LibJS/LocalVariable.h
@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2025, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/FlyString.h>
+
+namespace JS {
+
+struct LocalVariable {
+    FlyString name;
+    enum class DeclarationKind {
+        Var,
+        LetOrConst,
+        Function,
+        ArgumentsObject,
+        CatchClauseParameter
+    };
+    DeclarationKind declaration_kind;
+};
+
+}