twitch-constant-quality.js

// ==UserScript==
// @name Twitch Constant Quality
// @description Prevents automatic stream quality degradation when tab is hidden.
// @match *://*.twitch.tv/*
// @namespace https://gist.github.com/dmryabov/
// @version 1.4
// @grant none
// @run-at document-start
// @downloadUrl https://gist.githubusercontent.com/dmryabov/9342068195602bd71c2e387af4524556/raw/twitch-constant-quality.js
// ==/UserScript==

const addEventListener = window.addEventListener;

const interceptedEventNames = {
  'visibilitychange': true,
  'msvisibilitychange': true,
  'webkitvisibilitychange': true,
};

document.addEventListener = function () {
  const eventName = arguments[0];

  if (interceptedEventNames[eventName]) {
    console.debug(`prevented adding of "${eventName}" listener`);
    return;
  }
  
  addEventListener.apply(this, arguments);
};

setInterval(function () {
  let pointsButton = document.querySelector('div[data-test-selector="community-points-summary"] button[aria-label="Claim Bonus"]');

  if (pointsButton) {
    pointsButton.click();
    console.debug('clicked twitch points button');
  }
}, 2500);