1 files changed, 5 insertions, 6 deletions
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 0ed692f3c..01cf2973c 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -101,7 +101,7 @@ function workerClose() {
 function postMessage(message, transferOrOptions = {}) {
   const prefix =
     "Failed to execute 'postMessage' on 'DedicatedWorkerGlobalScope'";
-  webidl.requiredArguments(arguments.length, 1, { prefix });
+  webidl.requiredArguments(arguments.length, 1, prefix);
   message = webidl.converters.any(message);
   let options;
   if (
@@ -111,16 +111,15 @@ function postMessage(message, transferOrOptions = {}) {
   ) {
     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;