Function iteratorValue

src/Iterator.ts:71–92

(
  type: IteratorType,
  k: K,
  v?: V,
  iteratorResult?:
    | IteratorResult<K>
    | IteratorResult<V>
    | IteratorResult<[K, V]>
)

  iteratorResult?: IteratorResult<[K, V]>
): IteratorResult<[K, V]> | undefined;
export function iteratorValue<K, V>(
  type: IteratorType,
  k: K,
  v?: V,
  iteratorResult?:
    | IteratorResult<K>
    | IteratorResult<V>
    | IteratorResult<[K, V]>
): IteratorResult<K> | IteratorResult<V> | IteratorResult<[K, V]> | undefined {
  const value =
    type === ITERATE_KEYS ? k : type === ITERATE_VALUES ? v : [k, v];
  // eslint-disable-next-line @typescript-eslint/no-unused-expressions -- TODO enable eslint here
  iteratorResult
    ? (iteratorResult.value = value)
    : (iteratorResult = {
        // @ts-expect-error ensure value is not undefined
        value: value,
        done: false,
      });

  return iteratorResult;
}

export function iteratorDone(): IteratorReturnResult<undefined> {
  return { value: undefined, done: true };