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9 lines
348 B
9 lines
348 B
// 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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