import { Observable } from "rxjs/Observable";
import "rxjs/add/observable/of";
       ~~~~~~~~~~~~~~~~~~~~~~~~                     [forbidden % ("observables", "of")]
import "rxjs/add/operator/map";
       ~~~~~~~~~~~~~~~~~~~~~~~                      [forbidden % ("operators", "map")]
import "./add";

const ob1 = Observable.of(1) as Observable<number>;
const ob2 = ob1.map(value => value + 1);

const ob3 = Observable.from([1]);
const ob4 = ob1.filter(value => value > 1);

[forbidden]: Patched %s are forbidden outside of ./add.ts: %s