funcunit/site/node_modules/core-js/modules/$.wks.js

<!-- @hide title

var store  = require('./$.shared')('wks')
  , uid    = require('./$.uid')
  , Symbol = require('./$.global').Symbol;
module.exports = function(name){
  return store[name] || (store[name] =
    Symbol && Symbol[name] || (Symbol || uid)('Symbol.' + name));
};