1 var classof = require('../internals/classof');
2 var wellKnownSymbol = require('../internals/well-known-symbol');
3 var Iterators = require('../internals/iterators');
5 var ITERATOR = wellKnownSymbol('iterator');
7 module.exports = function (it) {
9 return O[ITERATOR] !== undefined
11 // eslint-disable-next-line no-prototype-builtins -- safe
12 || Iterators.hasOwnProperty(classof(O));