Function zipLongest

Take any number of iterators, and zip them together into one iterator of tuples. It will continue yielding tuples until all the iterators have closed, putting undefined in the place of closed iterators.

import { pipe } from "yta";
import {
  flatRepeat,
  of,
  range,
  take,
  toArray,
  zipLongest,
} from "yta/sync";

pipe(
  zipLongest(
    of("a", "b"),
    range(5),
    pipe(
      flatRepeat(() => of(true, false)),
      take(3)
    ),
  ),
  toArray(),
);
// => [
//      ["a", 0, true],
//      ["b", 1, false],
//      [undefined, 2, true],
//      [undefined, 3, undefined],
//      [undefined, 4, undefined],
//    ]
Copy

See also:

• zip