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