package.internals.set-species.js Maven / Gradle / Ivy

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'use strict';
var getBuiltIn = require('../internals/get-built-in');
var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
var wellKnownSymbol = require('../internals/well-known-symbol');
var DESCRIPTORS = require('../internals/descriptors');

var SPECIES = wellKnownSymbol('species');

module.exports = function (CONSTRUCTOR_NAME) {
  var Constructor = getBuiltIn(CONSTRUCTOR_NAME);

  if (DESCRIPTORS && Constructor && !Constructor[SPECIES]) {
    defineBuiltInAccessor(Constructor, SPECIES, {
      configurable: true,
      get: function () { return this; }
    });
  }
};