| 1 | 'use strict';
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| 2 | var call = require('../internals/function-call');
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| 3 | var AsyncFromSyncIterator = require('../internals/async-from-sync-iterator');
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| 4 | var anObject = require('../internals/an-object');
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| 5 | var getIterator = require('../internals/get-iterator');
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| 6 | var getIteratorDirect = require('../internals/get-iterator-direct');
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| 7 | var getMethod = require('../internals/get-method');
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| 8 | var wellKnownSymbol = require('../internals/well-known-symbol');
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| 9 |
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| 10 | var ASYNC_ITERATOR = wellKnownSymbol('asyncIterator');
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| 11 |
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| 12 | module.exports = function (it, usingIterator) {
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| 13 | var method = arguments.length < 2 ? getMethod(it, ASYNC_ITERATOR) : usingIterator;
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| 14 | return method ? anObject(call(method, it)) : new AsyncFromSyncIterator(getIteratorDirect(getIterator(it)));
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| 15 | };
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