filter-void-predicate-island.ts:10:29 - error SC1090: '.filter()' with a void-returning predicate (the callback return value is erased before its truthiness can be tested) is not supported yet

   9 | const pred: (n: number) => void = (n) => n;
  10 | console.log(values().filter(pred).join(","));
     |                             ^~~~
  11 | // The callback's erased return makes this unsupported.