1 var wellKnownSymbol = require('../internals/well-known-symbol');
2 var Iterators = require('../internals/iterators');
4 var ITERATOR = wellKnownSymbol('iterator');
5 var ArrayPrototype = Array.prototype;
7 // check on default Array iterator
8 module.exports = function (it) {
9 return it !== undefined && (Iterators.Array === it || ArrayPrototype[ITERATOR] === it);