Script that automatically admits people to Google Meet meetings

gm-auto-admit.user.js

// ==UserScript==
// @name        Auto-Admit google meet
// @namespace   Violentmonkey Scripts
// @match       https://meet.google.com/
// @grant       none
// @version     1.0
// @author      Alex Czar
// @description 27/03/2020, 12:46:14
// ==/UserScript==

const clickEvent = new MouseEvent("click", {
  view: window,
  bubbles: true,
  cancelable: true
});
const autoAdmit = (mutation) => {
    if (!mutation.addedNodes) return
  
    const element = document.querySelector(".XfpsVe > div:nth-child(2) > span:nth-child(3)");
    element && element.dispatchEvent(clickEvent);
};

const observer = new MutationObserver((mutations) => mutations.forEach(autoAdmit));

observer.observe(
  document.body,
  {
    childList: true,
    subtree: true,
    attributes: false,
    characterData: false
  }
);