'use strict'; var core = require('./$.core') , $ = require('./$') , DESCRIPTORS = require('./$.descriptors') , SPECIES = require('./$.wks')('species'); module.exports = function(KEY){ var C = core[KEY]; if(DESCRIPTORS && C && !C[SPECIES])$.setDesc(C, SPECIES, { configurable: true, get: function(){ return this; } }); };