signalrservice.ts

export class SignalrService {
  constructor(private zone: NgZone) {
  }

  messages$ = new Subject<any>();

  connect() {
    const conn = $.hubConnection("/myapp/notifications", {
      useDefaultPath: false
    });
    const hub = conn.createHubProxy("someroutinghub");
    hub.on("response", (messageString: string) => {
      this.zone.run(() => {
        this.messages$.next(messageString);
      });
    });
  }
}