Source: frontend-js-react-web/src/main/resources/META-INF/resources/js/hooks/usePrevious.es.js

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

import {useEffect, useRef} from 'react';

/**
 * Hook for comparing current and previous values (of state, props or any
 * arbitrary value).
 *
 * @see https://reactjs.org/docs/hooks-faq.html#how-to-get-the-previous-props-or-state
 */
export default function usePrevious(value) {
	const ref = useRef();

	useEffect(() => {
		ref.current = value;
	});

	return ref.current;
}