Closes dead WhatsApp windows and quickly opens chats by url

whatsapp-window-manager.js

// ==UserScript==
// @name         WhatsApp window manager
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Closes dead WhatsApp windows and quickly opens chats by url
// @author       mikhailsdv
// @match        https://*.whatsapp.com/*
// @grant        window.close
// ==/UserScript==

(function() {
    "use strict"

    const linkToChat = document.querySelector("#fallback_block h4 a[href^='https://web.whatsapp']")
    if (linkToChat) {
        setTimeout(() => {
            location.href = linkToChat.href
        }, 100)
    }
    else {
        setInterval(() => {
            const el = document.querySelector("._2Nr6U")
            if (el && /^Приложение WhatsApp|^WhatsApp is open in another/.test(el.innerText)) {
                window.close()
            }
        }, 2000)
    }
})();