2 var $ = require('../internals/export');
3 var $filter = require('../internals/array-iteration').filter;
4 var arrayMethodHasSpeciesSupport = require('../internals/array-method-has-species-support');
6 var HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('filter');
8 // `Array.prototype.filter` method
9 // https://tc39.es/ecma262/#sec-array.prototype.filter
10 // with adding support of @@species
11 $({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {
12 filter: function filter(callbackfn /* , thisArg */) {
13 return $filter(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);