NativeKeyboard -> NativeKeyboard -> NativeKeyboard -> NativeKeyboard]: NullInjectorError: No provider for NativeKeyboard! code example

Example: NativeKeyboard -> NativeKeyboard -> NativeKeyboard -> NativeKeyboard]: NullInjectorError: No provider for NativeKeyboard!

@Component({
  templateUrl: 'app.html',
  providers: [Keyboard]
})