// inside chat.on(...
const args = event.message.split(" ").filter(e => e.trim());
// if your regex check passes
  if(regex){
    sw(event, chat,args)
  }

// outside chat.on(...)
async function sw(event, chat, args) {
  const validLink = /(https?:\/\/)?(?:[a-z0-9]*[\-\.])*(?:apple|spotify|youtube|youtu|bandcamp|tidal|pandora|napster|yandex|amazon|deezer|jiosaavn|audius|gaana|soundcloud|page)\.(?:com|co|link|be)(?:\/[^ |\n|\t|\"|\']*)+/;
  let url = args[1];
  if (!validLink.test(url)) return;
  try {
    const song = await axios.post(`https://songwhip.com/`, { url: url }).then(res => res.data);
    chat.say(event.channel, song.url);
  } catch (error) {
    chat.say(event.channel, error.response.data);
  }
}