iterable-sources.ts:15:17 - error SC1090: an Iterable<number> holding a 'Countdown' (an Iterable value holds an array, Set, Map, string, or iterator) is not supported yet

  14 | }
  15 | console.log(sum(new Countdown()));
     |                 ^~~~~~~~~~~~~~~
  16 | console.log(sum(new Uint8Array([1, 2])));

iterable-sources.ts:16:17 - error SC1090: an Iterable<number> holding a 'Uint8Array' (an Iterable value holds an array, Set, Map, string, or iterator) is not supported yet

  15 | console.log(sum(new Countdown()));
  16 | console.log(sum(new Uint8Array([1, 2])));
     |                 ^~~~~~~~~~~~~~~~~~~~~~
  17 | export const marker: number = 1;