How to hide ion-tabs in Ionic when child view is pushed?

Question

JavaScript

How to hide ion-tabs in Ionic when child view is pushed?
Examples with navbram didn't work, what's the best way to do this?
I do it like this:

constructor( public navCtrl: NavController ) {
    this.navCtrl.push(CreditsPage)
  }

But it doesn't work, of course. You need to redefine the root, right? But then pop() won't work.