1 files changed, 5 insertions, 6 deletions
diff --git a/runtime/js/11_workers.js b/runtime/js/11_workers.js
index f8ed122b8..b08a5737e 100644
--- a/runtime/js/11_workers.js
+++ b/runtime/js/11_workers.js
@@ -202,7 +202,7 @@ class Worker extends EventTarget {
 
   postMessage(message, transferOrOptions = {}) {
     const prefix = "Failed to execute 'postMessage' on 'MessagePort'";
-    webidl.requiredArguments(arguments.length, 1, { prefix });
+    webidl.requiredArguments(arguments.length, 1, prefix);
     message = webidl.converters.any(message);
     let options;
     if (
@@ -212,16 +212,15 @@ class Worker extends EventTarget {
     ) {
       const transfer = webidl.converters["sequence<object>"](
         transferOrOptions,
-        { prefix, context: "Argument 2" },
+        prefix,
+        "Argument 2",
       );
       options = { transfer };
     } else {
       options = webidl.converters.StructuredSerializeOptions(
         transferOrOptions,
-        {
-          prefix,
-          context: "Argument 2",
-        },
+        prefix,
+        "Argument 2",
       );
     }
     const { transfer } = options;