RxJS in Action

GitHub: https://github.com/RxJSInAction/rxjs-in-action

RxJS: https://rxjs-dev.firebaseapp.com/guide/overview

Redux: https://redux.js.org/introduction/getting-started

NGRX: https://ngrx.io/guide/store

const { range } = require('rxjs');
const { map, filter } = require('rxjs/operators');

range(1, 20).pipe(
  filter(x => x % 2 === 1),
  map(x => x + x)
).subscribe(x => console.log(x));