Angular2 Observable and Promise

Question

I started using Angular2 Observable, but I can\'t find something similar to .then that I used with Promises.

This is what I want

Answer 1

From Angular2 documentation

We are advise to add this in rxjs-extension.ts

```
// Observable class extensions 
   import 'rxjs/add/observable/of'; 
   import 'rxjs/add/observable/throw';

// Observable operators 
   import 'rxjs/add/operator/catch'; 
   import 'rxjs/add/operator/debounceTime'; 
   import 'rxjs/add/operator/distinctUntilChanged'; 
   import 'rxjs/add/operator/do'; 
   import 'rxjs/add/operator/filter'; 
   import 'rxjs/add/operator/map'; 
   import 'rxjs/add/operator/switchMap'; 
```

And import it at app.module.ts (Root Module) import './rxjs-extensions';

This will help us to prevent further error.