Focus MFA: if a page has a single text or password field (usually an MFA page), then focus on it

focus-mfa.js

// ==UserScript==
// @name         Focus MFA
// @namespace    http://paul.stadig.name/
// @version      0.5
// @description  if a page has a single text or password field (usually an MFA page), then focus on it
// @author       Paul Stadig
// @match        *://*/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=google.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    if (document.querySelectorAll('input').length <= 2) {
        if (document.querySelectorAll('input[type="text"]').length == 1) {
            document.querySelectorAll('input[type="text"]')[0].focus();
        } else if (document.querySelectorAll('input[type="tel"]').length == 1) {
            document.querySelectorAll('input[type="tel"]')[0].focus();
        } else if (document.querySelectorAll('input[type="password"]').length == 1) {
            document.querySelectorAll('input[type="password"]')[0].focus();
        }
    }
})();