var global = require('../internals/global');
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var call = require('../internals/function-call');
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var aCallable = require('../internals/a-callable');
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var anObject = require('../internals/an-object');
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var tryToString = require('../internals/try-to-string');
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var getIteratorMethod = require('../internals/get-iterator-method');
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var TypeError = global.TypeError;
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module.exports = function (argument, usingIterator) {
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var iteratorMethod = arguments.length < 2 ? getIteratorMethod(argument) : usingIterator;
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if (aCallable(iteratorMethod)) return anObject(call(iteratorMethod, argument));
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throw TypeError(tryToString(argument) + ' is not iterable');
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};
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