| var wellKnownSymbol = require('../internals/well-known-symbol');var Iterators = require('../internals/iterators');var ITERATOR = wellKnownSymbol('iterator');var ArrayPrototype = Array.prototype;// check on default Array iteratormodule.exports = function (it) {  return it !== undefined && (Iterators.Array === it || ArrayPrototype[ITERATOR] === it);};
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