/node_modules/babel-polyfill/node_modules/core-js/library/modules/_is-array-iter.js

1// check on default Array iterator
2var Iterators = require('./_iterators');
3var ITERATOR = require('./_wks')('iterator');
4var ArrayProto = Array.prototype;
5
6module.exports = function (it) {
7  return it !== undefined && (Iterators.Array === it || ArrayProto[ITERATOR] === it);
8};