error TS2304: Cannot find name 'Observable' Angularjs 2
I had the same issue fixed it by importing Observable
import {Observable} from 'rxjs/Rx';
You can do it in 2 ways
1. Import Observable and then import other functions like map, do, catch, throw whichever you are using
import {Observable} from 'rxjs/Observable';import 'rxjs/add/operator/map';import 'rxjs/add/operator/catch';..........import 'rxjs/add/observable/throw';2. Importing whole Rxjs
import {Observable} from 'rxjs/Rx';or
import {Observable} from 'rxjs';Its recommended to use first method, since importing whole rxjs is not necessary and will include all the sub-modules into the bundle affecting bundle size and load time