export function intersect(a: Array<string>, b: Array<string>): Set<string> {
  const set1 = new Set(a);
  const set2 = new Set(b);
  return new Set([...set1].filter((x) => set2.has(x)));
}

export function match(arr1: Array<string>, arr2: Array<string>): boolean {
  const set1 = new Set(arr1);
  const set2 = new Set(arr2);

  if (set1.size !== set2.size) {
    return false;
  }

  for (let i = 0; i < arr1.length; i += 1) {
    const item = arr1[i];
    if (!set2.has(item)) {
      return false;
    }
  }

  return true;
}