Correct way to import Horizon IO into angular 2 project

The way I'm currently importing HorizonIO into my angular 2 project is as follows:

var horizon = require('@horizon/client');

@Injectable()
export class DbService {
    private horizon;

    constructor() {
        this.horizon = Horizon({host: 'localhost:8181'});
    }
}

Now I don't feel that this is the correct way as I should simply be able to

import { Horizon } from '@horizon/client';

Although it doesn't throw an error, the variable isn't usable.

Thought/comments?

The ES6 import equivalent of

var Horizon = require('@horizon/client');

is

import * as Horizon from '@horizon/client';

What you did is the equivalent of

var Horizon = require('@horizon/client').Horizon;

---

edit:

I now use the following code to make horizon injectable:

import { Injectable } from '@angular/core';
import * as Hz from '@horizon/client';

@Injectable()
export class Horizon extends Function {
  private _hz;

  constructor() {
    super('...args', 'return this._hz(...args)');
    this._hz = new Hz({host: 'localhost:8181'});

    return this.bind(this);
  }
}

It can then be injected and called like you would when directly importing it:

constructor(hz: Horizon){
  hz('messages').watch().subscribe(...);
}

Not exactly sure if this has any benefits over importing Horizon directly, but it feels more angularish to use DI.