So siehts ganz gut aus !

node_modules/es6-set/test/ext/every.js

@@ -0,0 +1,9 @@
+'use strict';
+
+var Set = require('../../');
+
+module.exports = function (t, a) {
+	a(t.call(new Set(), Boolean), true, "Empty set");
+	a(t.call(new Set([2, 3, 4]), Boolean), true, "Truthy");
+	a(t.call(new Set([2, 0, 4]), Boolean), false, "Falsy");
+};