Cannot find name 'HockeyApp'

I am trying to use the report system from hockey app using this:
but when i try to inject this module into app.component.ts constructor I get error, why?

import { HockeyApp } from 'ionic-hockeyapp';

constructor(public platform: Platform,
    public app: App,
    public hockeyApp: HockeyApp) { }

I think you are missing to add the HockeyApp in the providers list, can you cross check
as mentioned here :

i did this, i was following installation steps

can someone please help me?