Index: qunit/tests/cssEscaping.js
===================================================================
--- a/qunit/tests/cssEscaping.js
+++ b/qunit/tests/cssEscaping.js
@@ -1,11 +1,10 @@
 "use strict";
 
-(function()
 {
   const {Filter, ElemHideFilter} = require("filterClasses");
   const {escapeCSS, quoteCSS} = require("filterComposer");
 
   module("CSS escaping");
 
   test("CSS escaping", () =>
   {
@@ -94,9 +93,9 @@
       // Leading dashes must be escaped, when followed by certain characters.
       testEscape("-" + chr);
     }
 
     // Test some non-ASCII characters. However, those shouldn't
     // require escaping.
     testEscape("\uD83D\uDE3B\u2665\u00E4");
   });
-}());
+}