jodit/src/core/helpers/checker/is-html-from-word.ts

Jodit is awesome and usefully wysiwyg editor with filebrowser

/*!
 * Jodit Editor (https://xdsoft.net/jodit/)
 * Released under MIT see LICENSE.txt in the project root for license information.
 * Copyright (c) 2013-2020 Valeriy Chupurnov. All rights reserved. https://xdsoft.net
 */

/**
 * Detect if string is HTML from MS Word or Excel
 *
 * @param {string} data
 * @return {boolean}
 */
export function isHtmlFromWord(data: string): boolean {
	return (
		data.search(/<meta.*?Microsoft Excel\s[\d].*?>/) !== -1 ||
		data.search(/<meta.*?Microsoft Word\s[\d].*?>/) !== -1 ||
		(data.search(/style="[^"]*mso-/) !== -1 && data.search(/<font/) !== -1)
	);
}