| 1234567891011121314 | "use strict";module.exports = function () {	var arr = [1, "foo"], iterator, result;	if (typeof arr.keys !== "function") return false;	iterator = arr.keys();	if (!iterator) return false;	if (typeof iterator.next !== "function") return false;	result = iterator.next();	if (!result) return false;	if (result.value !== 0) return false;	if (result.done !== false) return false;	return true;};
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