From 95d619943e3bd2b313672b36ca900a713e28c01a Mon Sep 17 00:00:00 2001
From: Luke Wilde <lukew@serenityos.org>
Date: Fri, 23 Jun 2023 19:09:41 +0100
Subject: [PATCH] LibJS/Bytecode: Support private identifiers in optional
 chaining

Fixes 4 test262 tests :^)
---
 Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp b/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
index ce4e52ed93..77dbf55537 100644
--- a/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp
@@ -2698,11 +2698,11 @@ static Bytecode::CodeGenerationErrorOr<void> generate_optional_chain(Bytecode::G
                 generator.emit<Bytecode::Op::Store>(current_value_register);
                 return {};
             },
-            [&](OptionalChain::PrivateMemberReference const&) -> Bytecode::CodeGenerationErrorOr<void> {
-                return Bytecode::CodeGenerationError {
-                    &optional_chain,
-                    "Unimplemented reference: PrivateMemberReference"sv,
-                };
+            [&](OptionalChain::PrivateMemberReference const& ref) -> Bytecode::CodeGenerationErrorOr<void> {
+                generator.emit<Bytecode::Op::Store>(current_base_register);
+                generator.emit<Bytecode::Op::GetPrivateById>(generator.intern_identifier(ref.private_identifier->string()));
+                generator.emit<Bytecode::Op::Store>(current_value_register);
+                return {};
             }));
     }