Initial project upload

frontend/node_modules/core-js/modules/esnext.set.add-all.js

@@ -0,0 +1,15 @@
+'use strict';
+var $ = require('../internals/export');
+var aSet = require('../internals/a-set');
+var add = require('../internals/set-helpers').add;
+
+// `Set.prototype.addAll` method
+// https://github.com/tc39/proposal-collection-methods
+$({ target: 'Set', proto: true, real: true, forced: true }, {
+  addAll: function addAll(/* ...elements */) {
+    var set = aSet(this);
+    for (var k = 0, len = arguments.length; k < len; k++) {
+      add(set, arguments[k]);
+    } return set;
+  }
+});