From 26b62234cb427bf0561ab475957058e8d48d9f86 Mon Sep 17 00:00:00 2001
From: Halid Odat <halidodat@gmail.com>
Date: Fri, 7 May 2021 22:57:07 +0200
Subject: [PATCH] Implement `JSON[ @@toStringTag ]` (#1224)

---
 boa/src/builtins/json/mod.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/boa/src/builtins/json/mod.rs b/boa/src/builtins/json/mod.rs
index b52de61ece..ab8f91984b 100644
--- a/boa/src/builtins/json/mod.rs
+++ b/boa/src/builtins/json/mod.rs
@@ -41,7 +41,12 @@ impl BuiltIn for Json {
     fn init(context: &mut Context) -> (&'static str, Value, Attribute) {
         let _timer = BoaProfiler::global().start_event(Self::NAME, "init");
 
+        let to_string_tag = context.well_known_symbols().to_string_tag_symbol();
+
+        let attribute = Attribute::READONLY | Attribute::NON_ENUMERABLE | Attribute::CONFIGURABLE;
+
         let json_object = ObjectInitializer::new(context)
+            .property(to_string_tag, "JSON", attribute)
             .function(Self::parse, "parse", 2)
             .function(Self::stringify, "stringify", 3)
             .build();