[What's New in RxJS 7] Observable dictionaries in RxJS 6 forkJoin #blog #rxjs

rxjs-6_forkJoin-dictionary.ts

import { forkJoin, interval } from "rxjs";
import { map } from "rxjs/operators";

const count1To5$ = interval(1000).pipe(
  take(5),
  map(i => i + 1)
);

const count6To9$ = interval(1000).pipe(
  take(4),
  map(i => i + 6)
);

forkJoin({ x: count1to5$, y: count6to9$ }).subscribe(console.log);
// (after ~5s) {x: 5, y: 9}