How can I create a variable in a service that gets its data from a promise yet is shared between two components?

Question

I have a service in an Angular 2 using TypeScript. I want to be able to share an array of values that I get from that service. when one component makes a change to the array

Answer 1

@Krenom's answer was corrrect. with one import needing to be changed on my setup.

I needed import { Observable, Observer } from 'rxjs/Rx';import { Observable, Observer } from 'rxjs/Rx';