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2 years ago
var classof = require('../internals/classof');
var hasOwn = require('../internals/has-own-property');
var wellKnownSymbol = require('../internals/well-known-symbol');
var Iterators = require('../internals/iterators');
var ITERATOR = wellKnownSymbol('iterator');
var $Object = Object;
module.exports = function (it) {
var O = $Object(it);
return O[ITERATOR] !== undefined
|| '@@iterator' in O
|| hasOwn(Iterators, classof(O));
};