feat(extensions/web): add structuredClone function (#11572)

Co-authored-by: Luca Casonato <hello@lcas.dev>

2 files changed, 15 insertions, 8 deletions

diff --git a/runtime/js/11_workers.js b/runtime/js/11_workers.js
index 38267f571..b5a8a9d0c 100644
--- a/runtime/js/11_workers.js
+++ b/runtime/js/11_workers.js
@@ -318,10 +318,13 @@
         );
         options = { transfer };
       } else {
-        options = webidl.converters.PostMessageOptions(transferOrOptions, {
-          prefix,
-          context: "Argument 2",
-        });
+        options = webidl.converters.StructuredSerializeOptions(
+          transferOrOptions,
+          {
+            prefix,
+            context: "Argument 2",
+          },
+        );
       }
       const { transfer } = options;
       const data = serializeJsMessageData(message, transfer);
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 16a444098..a85c40eb9 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -105,10 +105,13 @@ delete Object.prototype.__proto__;
       );
       options = { transfer };
     } else {
-      options = webidl.converters.PostMessageOptions(transferOrOptions, {
-        prefix,
-        context: "Argument 2",
-      });
+      options = webidl.converters.StructuredSerializeOptions(
+        transferOrOptions,
+        {
+          prefix,
+          context: "Argument 2",
+        },
+      );
     }
     const { transfer } = options;
     const data = serializeJsMessageData(message, transfer);
@@ -373,6 +376,7 @@ delete Object.prototype.__proto__;
     performance: util.writable(performance.performance),
     setInterval: util.writable(timers.setInterval),
     setTimeout: util.writable(timers.setTimeout),
+    structuredClone: util.writable(messagePort.structuredClone),
 
     GPU: util.nonEnumerable(webgpu.GPU),
     GPUAdapter: util.nonEnumerable(webgpu.GPUAdapter),