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Disable Page Visibility API Script
// ==UserScript==
// @name Disable Page Visibility API
// @version 1.1.1
// @description Disable Page Visibility API Script
// @match *://*/*
// @license MIT
// @grant none
// @run-at document-start
// @namespace https://greasyfork.org/users/956726
// ==/UserScript==
(function() {
'use strict';
Object.defineProperties(document,{ 'hidden': {value: false} });
Object.defineProperties(document,{ 'mozHidden': {value: false} });
Object.defineProperties(document,{ 'webkitHidden': {value: false} });
Object.defineProperties(document,{ 'visibilityState': {value: 'visible'} });
Object.defineProperties(document,{ 'mozvisibilityState': {value: 'visible'} });
Object.defineProperties(document,{ 'webkitvisibilityState': {value: 'visible'} });
const evt = e => {
e.preventDefault();
e.stopPropagation();
e.stopImmediatePropagation();
};
document.addEventListener('visibilitychange', evt, true);
document.addEventListener('mozvisibilitychange', evt, true);
document.addEventListener('webkitvisibilitychange', evt, true);
document.addEventListener('blur', evt, true);
document.addEventListener('focus', evt, true);
document.addEventListener('hasFocus', evt, true);
console.log('Disable Page Visibility API Enabled.');
})();