/**
 * Checks if two values are equal, including support for `Date`, `RegExp`, and deep object comparison.
 *
 * @param {unknown} a - The first value to compare.
 * @param {unknown} b - The second value to compare.
 * @returns {boolean} `true` if the values are equal, otherwise `false`.
 *
 * @example
 * isEqual(1, 1); // true
 * isEqual({ a: 1 }, { a: 1 }); // true
 * isEqual(/abc/g, /abc/g); // true
 * isEqual(new Date('2020-01-01'), new Date('2020-01-01')); // true
 * isEqual([1, 2, 3], [1, 2, 3]); // true
 */
declare function isEqual(a: any, b: any): boolean;

export { isEqual };