| 1 | var classof = require('../internals/classof');
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| 2 | var Iterators = require('../internals/iterators');
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| 3 | var wellKnownSymbol = require('../internals/well-known-symbol');
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| 4 |
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| 5 | var ITERATOR = wellKnownSymbol('iterator');
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| 6 |
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| 7 | module.exports = function (it) {
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| 8 | if (it != undefined) return it[ITERATOR]
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| 9 | || it['@@iterator']
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| 10 | || Iterators[classof(it)];
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| 11 | };
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