--- /dev/null
+'use strict';
+var $ = require('../internals/export');
+var IS_PURE = require('../internals/is-pure');
+var getBuiltIn = require('../internals/get-built-in');
+var anObject = require('../internals/an-object');
+var aFunction = require('../internals/a-function');
+var bind = require('../internals/function-bind-context');
+var speciesConstructor = require('../internals/species-constructor');
+var getSetIterator = require('../internals/get-set-iterator');
+var iterate = require('../internals/iterate');
+
+// `Set.prototype.filter` method
+// https://github.com/tc39/proposal-collection-methods
+$({ target: 'Set', proto: true, real: true, forced: IS_PURE }, {
+ filter: function filter(callbackfn /* , thisArg */) {
+ var set = anObject(this);
+ var iterator = getSetIterator(set);
+ var boundFunction = bind(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
+ var newSet = new (speciesConstructor(set, getBuiltIn('Set')))();
+ var adder = aFunction(newSet.add);
+ iterate(iterator, function (value) {
+ if (boundFunction(value, value, set)) adder.call(newSet, value);
+ }, { IS_ITERATOR: true });
+ return newSet;
+ }
+});