Automatically clicks the show new messages button for unread tab in slack

slackUnread.js

// Works on pages such as: https://app.slack.com/client/*********/unreads/
/*
  Basically just clicks the "X New Messages" button when it pops up :)
*/

setInterval(function(){
  let newMessageButton = [...document.querySelectorAll('button')]
    .filter(txt => txt.innerHTML.toLowerCase()
    .includes('new message'))[0]
  if (newMessageButton != null) {
    newMessageButton.click();
  }
}, 3000);