JustPaste.it
// ==UserScript==
// @name         Remove ChatGPT Event Listeners
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Removes specific event listeners from window and document
// @match        https://chat.openai.com/*
// @run-at       document-start
// @grant        none
// ==/UserScript==
 
(function() {
    'use strict';
 
    const eventsToRemove = ['focus', 'visibilitychange'];
 
    const overrideEventListener = (obj, funcName) => {
        const originalFunction = obj[funcName];
        if (typeof originalFunction !== 'function') {
            console.error(`${funcName} is not a function on the provided object.`);
            return;
        }
        obj[funcName] = function(type, listener, options) {
            if (eventsToRemove.includes(type)) {
                console.log(`Prevented ${type} event listener from being added to ${obj === window ? 'window' : 'document'}`);
            } else {
                originalFunction.call(this, type, listener, options);
            }
        };
    };
 
    overrideEventListener(window, 'addEventListener');
    overrideEventListener(document, 'addEventListener');
})();