message: warning for arrayAreIntersecting/arrayIntersectionSize
diff: @@ -105,6 +105,10 @@ export function arraySetRemove<T>(xs: T[], x: T) {
  return true;
  }
  +/**
  + * Caution, O(n^2) complexity. Only use for small input sizes.
  + * For larger inputs consider using `SortedArray`.
  + */
  export function arrayAreIntersecting<T>(xs: T[], ys: T[]) {
  for (let i = 0, il = xs.length; i < il; ++i) {
  if (ys.includes(xs[i])) return true;
  @@ -112,6 +116,10 @@ export function arrayAreIntersecting<T>(xs: T[], ys: T[]) {
  return false;
  }
  +/**
  + * Caution, O(n^2) complexity. Only use for small input sizes.
  + * For larger inputs consider using `SortedArray`.
  + */
  export function arrayIntersectionSize<T>(xs: T[], ys: T[]) {
  let count = 0;
  for (let i = 0, il = xs.length; i < il; ++i) {
  