// 7.3.20 SpeciesConstructor(O, defaultConstructor)
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var anObject = require('./_an-object');
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var aFunction = require('./_a-function');
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var SPECIES = require('./_wks')('species');
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module.exports = function (O, D) {
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var C = anObject(O).constructor;
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var S;
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return C === undefined || (S = anObject(C)[SPECIES]) == undefined ? D : aFunction(S);
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};
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