declare let global: NodeJS.Global;

declare module NodeJS {
  interface Global {
    window: any;
    global: any;
  }
}

/**
 * window: browser in DOM main thread
 * self: browser in WebWorker
 * global: Node.js/other
 */
export const root: any = (
     typeof window == 'object' && window.window === window && window
  || typeof self == 'object' && self.self === self && self
  || typeof global == 'object' && global.global === global && global
);

if (!root) {
  throw new Error('RxJS could not find any global context (window, self, global)');
}