Initial project upload

frontend/node_modules/core-js/modules/esnext.set.is-subset-of.js

@@ -0,0 +1,14 @@
+'use strict';
+var $ = require('../internals/export');
+var call = require('../internals/function-call');
+var toSetLike = require('../internals/to-set-like');
+var $isSubsetOf = require('../internals/set-is-subset-of');
+
+// `Set.prototype.isSubsetOf` method
+// https://github.com/tc39/proposal-set-methods
+// TODO: Obsolete version, remove from `core-js@4`
+$({ target: 'Set', proto: true, real: true, forced: true }, {
+  isSubsetOf: function isSubsetOf(other) {
+    return call($isSubsetOf, this, toSetLike(other));
+  }
+});