| 1 | var classof = require('../internals/classof');
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| 2 | var wellKnownSymbol = require('../internals/well-known-symbol');
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| 3 | var Iterators = require('../internals/iterators');
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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 | var O = Object(it);
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| 9 | return O[ITERATOR] !== undefined
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| 10 | || '@@iterator' in O
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| 11 | // eslint-disable-next-line no-prototype-builtins
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| 12 | || Iterators.hasOwnProperty(classof(O));
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| 13 | };
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