revert-slack-ui.js

// ==UserScript==
// @name         revert-slack-ui
// @description  reverts to the old slack ui for web based users (oct/18/23)
// @version      0.0.03
// @match        https://*.slack.com/*
// @grant        none
// @run-at       document-body
// ==/UserScript==
(function() {

  let loop

  function modifyLocalStorage() {
    let localConfig = localStorage.getItem("localConfig_v2")
    if (localConfig && /\"is_unified_user_client_enabled\":true/.test(localConfig)) {
      document.write('')
      localConfig = localConfig.replace(/\"is_unified_user_client_enabled\":true/g, '\"is_unified_user_client_enabled\":false')
      localStorage.setItem("localConfig_v2", localConfig)
      try {
        clearInterval(loop)
      } catch (e) {}
      return location.reload(true)
    }
    return false
  }

  modifyLocalStorage()
  loop = setInterval(modifyLocalStorage, 25)

  setTimeout(function() {
    try {
      clearInterval(loop)
    } catch (e) {}
  }, 5000)

})()