asyncfuncs.ts

'use strict';

import { mapAsync } from 'ix/async/mapasync';
import { filterAsync } from 'ix/async/filterasync';

const source = filterAsync(
  mapAsync([1, 2, 3, 4, 5], async x => x * x),
  async x => x % 3 === 0
);

for await (let item of source) {
  console.log(item);
}