Function collHas

src/common/coll.ts:21–24

(
  coll: Coll<unknown> | undefined,
  keyOrValue: unknown,
)

export const collSize4 = collSizeN(collSize3);

export const collHas = (
  coll: Coll<unknown> | undefined,
  keyOrValue: unknown,
): boolean => coll?.has(keyOrValue) ?? false;

export const collIsEmpty = (coll: Coll<unknown> | undefined): boolean =>
  isUndefined(coll) || collSize(coll) == 0;