CDSS-daming-web/node_modules/core-js/internals/get-built-in.js

var global = require('../internals/global');

var aFunction = function (variable) {
  return typeof variable == 'function' ? variable : undefined;
};

module.exports = function (namespace, method) {
  return arguments.length < 2 ? aFunction(global[namespace]) : global[namespace] && global[namespace][method];
};