Source: layout-seo-web/src/main/resources/META-INF/resources/js/seo/PreviewSeoEvents.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.
 */

const previewSeoFireChange = (portletNamespace, data) =>
	Liferay.fire(`${portletNamespace}PreviewSeo:changed`, {data});

const previewSeoOnChange = (portletNamespace, cb) =>
	Liferay.on(`${portletNamespace}PreviewSeo:changed`, (event) => {
		cb(event.data);
	});

export {previewSeoFireChange, previewSeoOnChange};