message: fix(TypeScript): resolved typings issue for TS 3.0
diff: @@ -340,7 +340,7 @@ export class AjaxSubscriber<T> extends Subscriber<Event> {
  }
  (<any>xhrProgress).progressSubscriber = progressSubscriber;
  }
  - let xhrError: (e: ErrorEvent) => void;
  + let xhrError: (e: any) => void;
  xhrError = function(this: XMLHttpRequest, e: ErrorEvent) {
  const { progressSubscriber, subscriber, request } = (<any>xhrError);
  if (progressSubscriber) {
  