--- /dev/null
+'use strict';
+var $ = require('../internals/export');
+var IS_PURE = require('../internals/is-pure');
+var anObject = require('../internals/an-object');
+var aFunction = require('../internals/a-function');
+var iterate = require('../internals/iterate');
+
+// `Set.prototype.isSupersetOf` method
+// https://tc39.github.io/proposal-set-methods/#Set.prototype.isSupersetOf
+$({ target: 'Set', proto: true, real: true, forced: IS_PURE }, {
+ isSupersetOf: function isSupersetOf(iterable) {
+ var set = anObject(this);
+ var hasCheck = aFunction(set.has);
+ return !iterate(iterable, function (value) {
+ if (hasCheck.call(set, value) === false) return iterate.stop();
+ }).stopped;
+ }
+});