export abstract class AuthenticationService {
  /**
   * Current user value of authentication service
   */
  readonly currentUserValue: ApplicationUser;
​
  /**
   * Current user of authentication service
   *
   * An `Observable` that emit whenever currentUser changed.
   */
  readonly currentUser: Observable<ApplicationUser>;
​
  /**
   * Logins authentication service
   * @param loginmodel Information needed for login
   * @returns login
   */
  abstract login(loginmodel: LoginModel): Promise<LoginResult>;
​
​
  /**
   * Logouts authentication service
   * @returns logout
   */
  abstract logout(): Promise<boolean>;
​
​
  /**
   * Refreshs authentication service
   * @returns refresh
   */
  abstract refresh(): Promise<ApplicationUser>;
}

  NarikJwtAuthenticationModule.forRoot({
      loginEndPoint: "api/account/Authenticate",
      logoutEndPoint: "api/account/Logout",
      refreshEndPoint: "api/account/Authenticate",
      tokenStorage: "localStorage",
      loginPageUrl: "/"
    })