VS2015 如何调试Angular2 项目中的Typespecript

I created a new web project with template "ASP.NET Core Angular2 Starter Application(.Net Core)" in vs 2015.

As shown in below typescript, I set breakpoint at " this.currentCount++;" but it cannot be hitted when I click UI button.

@Component({
selector: 'counter',
template: require('./counter.component.html')
})
export class CounterComponent {
public currentCount = 0;

public incrementCounter() {
     this.currentCount++;
 }

}

Is there a way to debug typescript files from visual studio 2015 ?

http://www.cnblogs.com/yaozhenfa/p/asp_net_5_typescript_angular2.html