import { Optional } from '@hazae41/option';

type Equalser<T> = (a: T, b: T) => Optional<boolean>;
declare namespace Equals {
    function ref(a: unknown, b: unknown): boolean;
    function json(a: unknown, b: unknown): boolean | undefined;
    function shallow(a?: unknown, b?: unknown): boolean;
}

export { Equals, type Equalser };