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