1 files changed, 2 insertions, 4 deletions
diff --git a/ext/webidl/00_webidl.js b/ext/webidl/00_webidl.js
index 43c0cb621..5f4a69240 100644
--- a/ext/webidl/00_webidl.js
+++ b/ext/webidl/00_webidl.js
@@ -642,11 +642,9 @@ converters["sequence<DOMString>"] = createSequenceConverter(
   converters.DOMString,
 );
 
-function requiredArguments(length, required, opts = {}) {
+function requiredArguments(length, required, prefix) {
   if (length < required) {
-    const errMsg = `${
-      opts.prefix ? opts.prefix + ": " : ""
-    }${required} argument${
+    const errMsg = `${prefix ? prefix + ": " : ""}${required} argument${
       required === 1 ? "" : "s"
     } required, but only ${length} present.`;
     throw new TypeError(errMsg);