Function intersects

src/utils/set.ts:17–27

(a: Set<A>, b: Set<A>)

 * Note: this code is hot, so is optimized for speed.
 */
export function intersects<A>(a: Set<A>, b: Set<A>): boolean {
  if (a.size === 0 || b.size === 0) {
    return false
  }
  for (const item of a) {
    if (b.has(item)) {
      return true
    }
  }
  return false
}

/**
 * Note: this code is hot, so is optimized for speed.