resourceloader: Simplify StringSet fallback

Covered by tests.

Change-Id: I6a287f27d0830561275bf0be525992c59cbe441f

diff --git a/resources/src/startup/mediawiki.js b/resources/src/startup/mediawiki.js
index bb04085..29f7445 100644 (file)
--- a/resources/src/startup/mediawiki.js
+++ b/resources/src/startup/mediawiki.js
@@ -48,22 +48,19 @@
 
        function defineFallbacks() {
                // <https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set>
-               StringSet = window.Set || ( function () {
-                       /**
-                        * @private
-                        * @class
-                        */
-                       function StringSet() {
-                               this.set = Object.create( null );
-                       }
-                       StringSet.prototype.add = function ( value ) {
-                               this.set[ value ] = true;
+               /**
+                * @private
+                * @class
+                */
+               StringSet = window.Set || function StringSet() {
+                       var set = Object.create( null );
+                       this.add = function ( value ) {
+                               set[ value ] = true;
                        };
-                       StringSet.prototype.has = function ( value ) {
-                               return value in this.set;
+                       this.has = function ( value ) {
+                               return value in set;
                        };
-                       return StringSet;
-               }() );
+               };
        }
 
        /**