import {Component} from 'angular2/src/core/annotations_impl/annotations'; import {View} from 'angular2/src/core/annotations_impl/view'; import {Alert} from 'ionic/components/alert/alert'; @Component({ selector: 'ion-app' }) @View({ templateUrl: 'main.html', directives: [Alert] }) class IonicApp { constructor() { console.log('IonicApp Start') } showAlert() { console.log('Show alert'); Alert.open({ }); } } export function main(ionicBootstrap) { ionicBootstrap(IonicApp); }