;(function (undefined) {

var objectTypes = {

'boolean': false,

'function': true,

'object': true,

'number': false,

'string': false,

'undefined': false

};

var root = (objectTypes[typeof window] && window) || this,

freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports,

freeModule = objectTypes[typeof module] && module && !module.nodeType && module,

moduleExports = freeModule && freeModule.exports === freeExports && freeExports,

freeGlobal = objectTypes[typeof global] && global;

if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal)) {

root = freeGlobal;

}

var Rx = {

internals: {},

config: {

Promise: root.Promise

},

helpers: { }

};