/**
 * Equality test function.
 * Null and undefined treated as equal.
 *
 * * If `a` is an 'object' and provides an `equals` function, then the method will delegate to it.
 * * If `a` and `b` are arrays then both will be equal if all items are equal.
 *
 * @example
 * ```ts
 * import { equal } from "apprt-core/equals";
 *
 * if (equal(a, b)) {
 *   // do something if true
 * }
 * ```
 * @param a value or object to compare with `b`
 * @param b value or object to compare with `a`
 * @returns true if `a` is equal to `b`.
 */
declare function equal(a: any, b: any): boolean;
/**
 * Deep equality test function.
 * Null and undefined treated as equal.
 *
 * * If `a` is an 'object' and provides an `equals` function, then the method will delegate to it.
 * * If `a` is an 'object' without an `equals` then `a` and `b` are equal if all (own) properties are equal.
 * * If `a` and `b` are arrays then both will be equal if all items are equal.
 *
 * @example
 * ```ts
 * import { deepEqual } from "apprt-core/equals";
 *
 * if (deepEqual(a, b)){
 *   // do something if true
 * }
 * ```
 * @param a value or object to compare with `b`
 * @param b value or object to compare with `a`
 * @returns true if `a` is equal to `b`.
 */
declare function deepEqual(a: any, b: any): boolean;

export { deepEqual, equal };