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13 lines
635 B
13 lines
635 B
var call = require('../internals/function-call'); |
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var AsyncFromSyncIterator = require('../internals/async-from-sync-iterator'); |
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var anObject = require('../internals/an-object'); |
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var getIterator = require('../internals/get-iterator'); |
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var getMethod = require('../internals/get-method'); |
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var wellKnownSymbol = require('../internals/well-known-symbol'); |
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var ASYNC_ITERATOR = wellKnownSymbol('asyncIterator'); |
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module.exports = function (it, usingIterator) { |
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var method = arguments.length < 2 ? getMethod(it, ASYNC_ITERATOR) : usingIterator; |
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return method ? anObject(call(method, it)) : new AsyncFromSyncIterator(getIterator(it)); |
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};
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