/**
 * Performs a deep equality check between two values, supporting primitives, arrays,
 * Dream instances, CalendarDate, DateTime, ClockTime, ClockTimeTz, and objects.
 *
 * Examples:
 *   areEqual(undefined, undefined) // true
 *   areEqual(null, null) // true
 *   areEqual([1, 2], [1, 2]) // true
 *   areEqual({ a: 1 }, { a: 1 }) // true
 *   areEqual(new DateTime(), new DateTime()) // true if equal
 *
 * @param a - First value to compare
 * @param b - Second value to compare
 * @returns True if the values are deeply equal, false otherwise
 */
export default function areEqual(a: any, b: any): boolean;