const {map} = require('rxjs/operators')
const {request} = require('universal-rxjs-ajax')

interface Repo {
  name: string
}

// config as accepted by Observable.ajax()
const config = {
  url: 'https://api.github.com/orgs/Reactive-Extensions/repos',
  method: 'GET', // and so on...
}

request<Repo[]>(config)
  .pipe(map(({response}) => response.map((repo) => repo.name)))
  .subscribe((repoNames) => console.log(repoNames))