Check if user agent is a bot

snippet.html

<script>
  const checkIfUserAgentIsBot = (userAgent) => {
	  const robots = new RegExp(([
		/bot/,/spider/,/crawl/,                               // GENERAL TERMS
		/APIs-Google/,/AdsBot/,/Googlebot/,                   // GOOGLE ROBOTS
		/mediapartners/,/Google Favicon/,
		/FeedFetcher/,/Google-Read-Aloud/,
		/DuplexWeb-Google/,/googleweblight/,
		/bing/,/yandex/,/baidu/,/duckduck/,/yahoo/,           // OTHER ENGINES
		/ecosia/,/ia_archiver/,
        /checkly/, /headless/,
		/semrush/,                                            // OTHER
	  ]).map((r) => r.source).join("|"),"i");     // BUILD REGEXP + "i" FLAG

	  return robots.test(userAgent);
   };
</script>