Ionic 2 touchstart event structure only has isTrusted

Ionic Framework ionic-v3
1

I am catching the touchstart event with the following in my html code:

(touchstart)=“TouchStart($event)”

in the typescript function I do the following:

TouchStart(event) {
console.log(event);
}

When running in the iOS emulator, I see the following as the output from the console.log call:

{“isTrusted”:true}

Anyone have any ideas why no other information is in the event structure?