☰

YouTube JS Engine Tamer

To enhance YouTube performance by modifying YouTube JS Engine

当前为 2023-08-31 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        YouTube JS Engine Tamer
  3. // @namespace   UserScripts
  4. // @match       https://www.youtube.com/*
  5. // @version     0.4.5
  6. // @license     MIT
  7. // @author      CY Fung
  8. // @icon        https://github.com/cyfung1031/userscript-supports/raw/main/icons/yt-engine.png
  9. // @description To enhance YouTube performance by modifying YouTube JS Engine
  10. // @grant       none
  11. // @run-at      document-start
  12. // @unwrap
  13. // @inject-into page
  14. // @allFrames   true
  15. // ==/UserScript==
  16.  
  17. (() => {
  18.  
  19.   const NATIVE_CANVAS_ANIMATION = true; // for #cinematics
  20.   const FIX_schedulerInstanceInstance_ = true;
  21.   const FIX_yt_player = true;
  22.   const FIX_Animation_n_timeline = true;
  23.   const NO_PRELOAD_GENERATE_204 = false;
  24.   const CHANGE_appendChild = true;
  25.  
  26.   const FIX_error_many_stack = true; // should be a bug caused by uBlock Origin
  27.   const FIX_error_many_stack_keepAliveDuration = 200; // ms
  28.   const FIX_error_many_stack_keepAliveDuration_check_if_n_larger_than = 8;
  29.  
  30.   /*
  31.   window.addEventListener('edm',()=>{
  32.     let p = [...this.onerror.errorTokens][0].token; (()=>{ console.log(p); throw new Error(p);console.log(334,p) })()
  33.   });
  34.  
  35.   window.addEventListener('edn',()=>{
  36.     let p = [...this.onerror.errorTokens][0].token+"X"; (()=>{ console.log(p); throw new Error(p);console.log(334,p) })()
  37.   });
  38.   window.addEventListener('edr',()=>{
  39.     let p = '123'; (()=>{ console.log(p); throw new Error(p);console.log(334,p) })()
  40.   });
  41. */
  42.  
  43.  
  44.   ; (() => {
  45.  
  46.     if (FIX_error_many_stack && self instanceof Window) {
  47.       // infinite stack due to matchesStackTrace inside objectPrune of AdsBlock
  48.  
  49.       const pdK = Object.getOwnPropertyDescriptor(window, 'onerror');
  50.       if (!pdK || (pdK.get && pdK.configurable)) {
  51.  
  52.       } else {
  53.         return;
  54.       }
  55.  
  56.       let unsupportErrorFix = false;
  57.  
  58.       let firstHook = true;
  59.       let busy33 = false;
  60.  
  61.       let state = 0;
  62.  
  63.       if (pdK) {
  64.         delete window['onerror'];
  65.       }
  66.  
  67.       const pd = {
  68.         get() {
  69.           const stack = (new Error()).stack;
  70.           // targetStack = stack;
  71.           let isGetExceptionToken = stack.indexOf('getExceptionToken') >= 0;
  72.           state = isGetExceptionToken ? 1 : 0;
  73.           delete Window.prototype['onerror'];
  74.           let r = pdK ? pdK.get.call(this) : this.onerror;
  75.           Object.defineProperty(Window.prototype, 'onerror', pd);
  76.           //        console.log('onerror get', r)
  77.           return r;
  78.         },
  79.         set(nv) {
  80.           const stack = (new Error()).stack;
  81.           let isGetExceptionToken = stack.indexOf('getExceptionToken') >= 0;
  82.           state = state === 1 && isGetExceptionToken ? 2 : 0;
  83.           /** @type {string?} */
  84.           let sToken = null;
  85.           if (unsupportErrorFix || busy33) {
  86.  
  87.           } else if (typeof nv === 'function' && state === 2) {
  88.             if (firstHook) {
  89.               firstHook = false;
  90.               console.groupCollapsed('Infinite onerror Bug Found');
  91.               console.log(location.href);
  92.               console.log(stack);
  93.               console.log(nv);
  94.               console.groupEnd();
  95.             }
  96.             let _token = null;
  97.             busy33 = true;
  98.             String.prototype.includes76 = String.prototype.includes;
  99.             String.prototype.includes = function (token) {
  100.               _token = token;
  101.               return true;
  102.             }
  103.             nv('token');
  104.             String.prototype.includes = String.prototype.includes76;
  105.             sToken = _token;
  106.             busy33 = false;
  107.             if (typeof sToken !== 'string') {
  108.               unsupportErrorFix = true;
  109.             }
  110.           }
  111.           delete Window.prototype['onerror'];
  112.           if (typeof sToken === 'string' && sToken.length > 1) {
  113.             /** @type {string} */
  114.             const token = sToken;
  115.             /** @type {OnErrorEventHandler & {errorTokens: Set<string>?} } */
  116.             const currentOnerror = pdK ? pdK.get.call(this) : this.onerror;
  117.  
  118.             const now = Date.now();
  119.             const tokenEntry = {
  120.               token,
  121.               expired: now + FIX_error_many_stack_keepAliveDuration
  122.             }
  123.             /** @typedef {typeof tokenEntry} TokenEntry */
  124.  
  125.             /** @type {Set<TokenEntry>} */
  126.             const errorTokens = currentOnerror.errorTokens;
  127.  
  128.             if (errorTokens) {
  129.               if (errorTokens.size > FIX_error_many_stack_keepAliveDuration_check_if_n_larger_than) {
  130.                 for (const entry of errorTokens) {
  131.                   if (entry.expired < now) {
  132.                     errorTokens.delete(entry);
  133.                   }
  134.                 }
  135.               }
  136.               errorTokens.add(tokenEntry)
  137.             } else {
  138.               /** @type {Set<TokenEntry>} */
  139.               const errorTokens = new Set([tokenEntry]);
  140.               /** @type {OnErrorEventHandler & {errorTokens: Set<string>} } */
  141.               const newOnerror = ((oe) => {
  142.                 const r = function (msg, ...args) {
  143.                   if (typeof msg === 'string' && errorTokens.size > 0) {
  144.                     for (const entry of errorTokens) {
  145.                       if (msg.includes(entry.token)) return true;
  146.                     }
  147.                   }
  148.                   if (typeof oe === 'function') {
  149.                     return oe.apply(this, arguments);
  150.                   }
  151.                 };
  152.                 r.errorTokens = errorTokens;
  153.                 return r;
  154.               })(currentOnerror);
  155.  
  156.               if (pdK && pdK.set) pdK.set.call(this, newOnerror);
  157.               else this.onerror = newOnerror;
  158.             }
  159.           } else {
  160.             if (pdK && pdK.set) pdK.set.call(this, nv);
  161.             else this.onerror = nv;
  162.           }
  163.           Object.defineProperty(Window.prototype, 'onerror', pd);
  164.  
  165.           // console.log('onerror set', nv)
  166.           return true;
  167.         },
  168.         enumerable: true,
  169.         configurable: true
  170.       }
  171.  
  172.       Object.defineProperty(Window.prototype, 'onerror', pd);
  173.  
  174.  
  175.     }
  176.  
  177.  
  178.   })();
  179.  
  180.  
  181.   // << if FIX_yt_player >>
  182.  
  183.   // credit to @nopeless (https://greasyfork.org/scripts/471489-youtube-player-perf/)
  184.   const PERF_471489_ = true;
  185.   // PERF_471489_ is not exactly the same to Youtube Player perf v0.7
  186.   // This script uses a much gentle way to tamer the JS engine instead.
  187.  
  188.   // << end >>
  189.  
  190.   const steppingScaleN = 200; // transform: scaleX(k/N); 0<k<N
  191.  
  192.   const Promise = (async () => { })().constructor;
  193.  
  194.   let isMainWindow = false;
  195.   try {
  196.     isMainWindow = window.document === window.top.document
  197.   } catch (e) { }
  198.  
  199.   let NO_PRELOAD_GENERATE_204_BYPASS = NO_PRELOAD_GENERATE_204 ? false : true;
  200.  
  201.   const onRegistryReady = (callback) => {
  202.     if (typeof customElements === 'undefined') {
  203.       if (!('__CE_registry' in document)) {
  204.         // https://github.com/webcomponents/polyfills/
  205.         Object.defineProperty(document, '__CE_registry', {
  206.           get() {
  207.             // return undefined
  208.           },
  209.           set(nv) {
  210.             if (typeof nv == 'object') {
  211.               delete this.__CE_registry;
  212.               this.__CE_registry = nv;
  213.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  214.             }
  215.             return true;
  216.           },
  217.           enumerable: false,
  218.           configurable: true
  219.         })
  220.       }
  221.       let eventHandler = (evt) => {
  222.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  223.         const f = callback;
  224.         callback = null;
  225.         eventHandler = null;
  226.         f();
  227.       };
  228.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  229.     } else {
  230.       callback();
  231.     }
  232.   };
  233.  
  234.   const getZq = (_yt_player) => {
  235.  
  236.     const w = 'Zq';
  237.  
  238.     let arr = [];
  239.  
  240.     for (const [k, v] of Object.entries(_yt_player)) {
  241.  
  242.       const p = typeof v === 'function' ? v.prototype : 0;
  243.       if (p
  244.         && typeof p.start === 'function' && p.start.length === 0
  245.         && typeof p.isActive === 'function' && p.isActive.length === 0
  246.         && typeof p.stop === 'function' && p.stop.length === 0
  247.         && !p.isComplete && !p.getStatus && !p.getResponseHeader && !p.getLastError
  248.         && !p.send && !p.abort
  249.         && !p.sample && !p.initialize && !p.fail && !p.getName
  250.         // && !p.dispose && !p.isDisposed
  251.  
  252.       ) {
  253.         arr = addProtoToArr(_yt_player, k, arr) || arr;
  254.  
  255.  
  256.       }
  257.  
  258.     }
  259.  
  260.     if (arr.length === 0) {
  261.  
  262.       console.warn(`Key does not exist. [${w}]`);
  263.     } else {
  264.  
  265.       console.log(`[${w}]`, arr);
  266.       return arr[0];
  267.     }
  268.  
  269.  
  270.  
  271.  
  272.   }
  273.  
  274.  
  275.   const getVG = (_yt_player) => {
  276.     const w = 'VG';
  277.  
  278.     let arr = [];
  279.  
  280.     for (const [k, v] of Object.entries(_yt_player)) {
  281.  
  282.       const p = typeof v === 'function' ? v.prototype : 0;
  283.       if (p
  284.         && typeof p.show === 'function' && p.show.length === 1
  285.         && typeof p.hide === 'function' && p.hide.length === 0
  286.         && typeof p.stop === 'function' && p.stop.length === 0) {
  287.  
  288.         arr = addProtoToArr(_yt_player, k, arr) || arr;
  289.  
  290.       }
  291.  
  292.     }
  293.  
  294.  
  295.     if (arr.length === 0) {
  296.  
  297.       console.warn(`Key does not exist. [${w}]`);
  298.     } else {
  299.  
  300.       console.log(`[${w}]`, arr);
  301.       return arr[0];
  302.     }
  303.  
  304.  
  305.  
  306.   }
  307.  
  308.  
  309.   const getzo = (_yt_player) => {
  310.     const w = 'zo';
  311.  
  312.     let arr = [];
  313.  
  314.     for (const [k, v] of Object.entries(_yt_player)) {
  315.  
  316.       if (
  317.         typeof v === 'function' && v.length === 3 && k.length < 3
  318.         && (v + "").includes("a.style[b]=c")
  319.       ) {
  320.  
  321.         arr.push(k);
  322.  
  323.       }
  324.  
  325.     }
  326.  
  327.  
  328.     if (arr.length === 0) {
  329.  
  330.       console.warn(`Key does not exist. [${w}]`);
  331.     } else {
  332.  
  333.       console.log(`[${w}]`, arr);
  334.       return arr[0];
  335.     }
  336.  
  337.   }
  338.  
  339.   const addProtoToArr = (parent, key, arr) => {
  340.  
  341.  
  342.     let isChildProto = false;
  343.     for (const sr of arr) {
  344.       if (parent[key].prototype instanceof parent[sr]) {
  345.         isChildProto = true;
  346.         break;
  347.       }
  348.     }
  349.  
  350.     if (isChildProto) return;
  351.  
  352.     arr = arr.filter(sr => {
  353.       if (parent[sr].prototype instanceof parent[key]) {
  354.         return false;
  355.       }
  356.       return true;
  357.     });
  358.  
  359.     arr.push(key);
  360.  
  361.     return arr;
  362.  
  363.  
  364.   }
  365.  
  366.   const getuG = (_yt_player) => {
  367.  
  368.     const w = 'uG';
  369.  
  370.     let arr = [];
  371.  
  372.     for (const [k, v] of Object.entries(_yt_player)) {
  373.  
  374.  
  375.       const p = typeof v === 'function' ? v.prototype : 0;
  376.  
  377.       if (p
  378.         && typeof p.createElement === 'function' && p.createElement.length === 2
  379.         && typeof p.detach === 'function' && p.detach.length === 0
  380.         && typeof p.update === 'function' && p.update.length === 1
  381.         && typeof p.updateValue === 'function' && p.updateValue.length === 2
  382.       ) {
  383.  
  384.         arr = addProtoToArr(_yt_player, k, arr) || arr;
  385.  
  386.       }
  387.  
  388.     }
  389.  
  390.  
  391.  
  392.  
  393.  
  394.     if (arr.length === 0) {
  395.  
  396.       console.warn(`Key does not exist. [${w}]`);
  397.     } else {
  398.  
  399.       console.log(`[${w}]`, arr);
  400.       return arr[0];
  401.     }
  402.  
  403.   }
  404.  
  405.  
  406.  
  407.   // << if FIX_schedulerInstanceInstance_ >>
  408.  
  409.   let idleFrom = Date.now() + 2700;
  410.   let slowMode = false;
  411.  
  412.   let ytEvented = false;
  413.  
  414.  
  415.   function setupEvents() {
  416.  
  417.     document.addEventListener('yt-navigate', () => {
  418.  
  419.       ytEvented = true;
  420.       slowMode = false;
  421.       idleFrom = Date.now() + 2700;
  422.  
  423.     });
  424.     document.addEventListener('yt-navigate-start', () => {
  425.  
  426.       ytEvented = true;
  427.       slowMode = false;
  428.       idleFrom = Date.now() + 2700;
  429.  
  430.     });
  431.  
  432.     document.addEventListener('yt-page-type-changed', () => {
  433.  
  434.       ytEvented = true;
  435.       slowMode = false;
  436.       idleFrom = Date.now() + 1700;
  437.  
  438.     });
  439.  
  440.  
  441.     document.addEventListener('yt-player-updated', () => {
  442.  
  443.       ytEvented = true;
  444.       slowMode = false;
  445.       idleFrom = Date.now() + 1700;
  446.  
  447.     });
  448.  
  449.  
  450.     document.addEventListener('yt-page-data-fetched', () => {
  451.  
  452.       ytEvented = true;
  453.       slowMode = false;
  454.       idleFrom = Date.now() + 1700;
  455.  
  456.     });
  457.  
  458.     document.addEventListener('yt-navigate-finish', () => {
  459.  
  460.       ytEvented = true;
  461.       slowMode = false;
  462.       let t = Date.now() + 700;
  463.       if (t > idleFrom) idleFrom = t;
  464.  
  465.     });
  466.  
  467.     document.addEventListener('yt-page-data-updated', () => {
  468.  
  469.       ytEvented = true;
  470.       slowMode = false;
  471.       let t = Date.now() + 700;
  472.       if (t > idleFrom) idleFrom = t;
  473.  
  474.     });
  475.  
  476.     document.addEventListener('yt-watch-comments-ready', () => {
  477.  
  478.       ytEvented = true;
  479.       slowMode = false;
  480.       let t = Date.now() + 700;
  481.       if (t > idleFrom) idleFrom = t;
  482.  
  483.     });
  484.   }
  485.  
  486.  
  487.   // << end >>
  488.  
  489.   const cleanContext = async (win) => {
  490.     const waitFn = requestAnimationFrame; // shall have been binded to window
  491.     try {
  492.       let mx = 16; // MAX TRIAL
  493.       const frameId = 'vanillajs-iframe-v1';
  494.       /** @type {HTMLIFrameElement | null} */
  495.       let frame = document.getElementById(frameId);
  496.       let removeIframeFn = null;
  497.       if (!frame) {
  498.         frame = document.createElement('iframe');
  499.         frame.id = 'vanillajs-iframe-v1';
  500.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  501.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  502.         n.appendChild(frame);
  503.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  504.         const root = document.documentElement;
  505.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  506.         removeIframeFn = (setTimeout) => {
  507.           const removeIframeOnDocumentReady = (e) => {
  508.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  509.             win = null;
  510.             setTimeout(() => {
  511.               n.remove();
  512.               n = null;
  513.             }, 200);
  514.           }
  515.           if (document.readyState !== 'loading') {
  516.             removeIframeOnDocumentReady();
  517.           } else {
  518.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  519.           }
  520.         }
  521.       }
  522.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  523.       const fc = frame.contentWindow;
  524.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  525.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, requestIdleCallback, getComputedStyle } = fc;
  526.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, requestIdleCallback, getComputedStyle };
  527.       for (let k in res) res[k] = res[k].bind(win); // necessary
  528.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  529.       res.animate = fc.HTMLElement.prototype.animate;
  530.       return res;
  531.     } catch (e) {
  532.       console.warn(e);
  533.       return null;
  534.     }
  535.   };
  536.  
  537.  
  538.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  539.  
  540.   cleanContext(window).then(__CONTEXT__ => {
  541.     if (!__CONTEXT__) return null;
  542.  
  543.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, requestIdleCallback, getComputedStyle } = __CONTEXT__;
  544.  
  545.  
  546.  
  547.     let rafPromiseForTickers = null;
  548.  
  549.     const getRafPromiseForTickers = () => rafPromiseForTickers || (rafPromiseForTickers = new Promise(resolve => {
  550.       requestAnimationFrame(hRes => {
  551.         rafPromiseForTickers = null;
  552.         resolve(hRes);
  553.       });
  554.     }));
  555.  
  556.     const getForegroundPromise = () => {
  557.       if (document.visibilityState === 'visible') {
  558.         return Promise.resolve();
  559.       } else {
  560.         return getRafPromiseForTickers();
  561.       }
  562.     };
  563.  
  564.     NO_PRELOAD_GENERATE_204_BYPASS || promiseForCustomYtElementsReady.then(() => {
  565.       setTimeout(() => {
  566.         NO_PRELOAD_GENERATE_204_BYPASS = true;
  567.       }, 1270);
  568.     });
  569.  
  570.     const promiseForTamerTimeout = new Promise(resolve => {
  571.       promiseForCustomYtElementsReady.then(() => {
  572.         customElements.whenDefined('ytd-app').then(() => {
  573.           setTimeout(resolve, 1200);
  574.         });
  575.       });
  576.       setTimeout(resolve, 3000);
  577.     });
  578.  
  579.  
  580.     class RAFHub {
  581.       constructor() {
  582.         /** @type {number} */
  583.         this.startAt = 8170;
  584.         /** @type {number} */
  585.         this.counter = 0;
  586.         /** @type {number} */
  587.         this.rid = 0;
  588.         /** @type {Map<number, FrameRequestCallback>} */
  589.         this.funcs = new Map();
  590.         const funcs = this.funcs;
  591.         /** @type {FrameRequestCallback} */
  592.         this.bCallback = this.mCallback.bind(this);
  593.         this.pClear = () => funcs.clear();
  594.       }
  595.       /** @param {DOMHighResTimeStamp} highResTime */
  596.       mCallback(highResTime) {
  597.         this.rid = 0;
  598.         Promise.resolve().then(this.pClear);
  599.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  600.       }
  601.       /** @param {FrameRequestCallback} f */
  602.       request(f) {
  603.         if (this.counter > 1e9) this.counter = 9;
  604.         let cid = this.startAt + (++this.counter);
  605.         this.funcs.set(cid, f);
  606.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  607.         return cid;
  608.       }
  609.       /** @param {number} cid */
  610.       cancel(cid) {
  611.         cid = +cid;
  612.         if (cid > 0) {
  613.           if (cid <= this.startAt) {
  614.             return cancelAnimationFrame(cid);
  615.           }
  616.           if (this.rid > 0) {
  617.             this.funcs.delete(cid);
  618.             if (this.funcs.size === 0) {
  619.               cancelAnimationFrame(this.rid);
  620.               this.rid = 0;
  621.             }
  622.           }
  623.         }
  624.       }
  625.     }
  626.  
  627.  
  628.  
  629.     NATIVE_CANVAS_ANIMATION && (() => {
  630.  
  631.       HTMLCanvasElement.prototype.animate = animate;
  632.  
  633.       let cid = setInterval(() => {
  634.         HTMLCanvasElement.prototype.animate = animate;
  635.       }, 1);
  636.  
  637.       promiseForTamerTimeout.then(() => {
  638.         clearInterval(cid)
  639.       });
  640.  
  641.     })();
  642.  
  643.     CHANGE_appendChild && (() => {
  644.  
  645.       HTMLElement.prototype.appendChild73 = HTMLElement.prototype.appendChild;
  646.       HTMLElement.prototype.appendChild = function (a) {
  647.         if (!NO_PRELOAD_GENERATE_204_BYPASS && document.head === this) {
  648.           for (let node = this.firstElementChild; node instanceof HTMLElement; node = node.nextElementSibling) {
  649.             if (node.nodeName === 'LINK' && node.rel === 'preload' && node.as === 'fetch' && !node.__m848__) {
  650.               node.__m848__ = 1;
  651.               node.rel = 'prefetch'; // see https://github.com/GoogleChromeLabs/quicklink
  652.             }
  653.           }
  654.         }
  655.         if (a instanceof DocumentFragment) {
  656.           if (a.firstElementChild === null) return a;
  657.         }
  658.         return this.appendChild73.apply(this, arguments)
  659.       }
  660.  
  661.  
  662.     })();
  663.  
  664.  
  665.     FIX_schedulerInstanceInstance_ && (async () => {
  666.  
  667.  
  668.       const schedulerInstanceInstance_ = await new Promise(resolve => {
  669.  
  670.         let cid = setInterval(() => {
  671.           let t = (((window || 0).ytglobal || 0).schedulerInstanceInstance_ || 0);
  672.           if (t) {
  673.  
  674.             clearInterval(cid);
  675.             resolve(t);
  676.           }
  677.         }, 1);
  678.         promiseForTamerTimeout.then(() => {
  679.           resolve(null)
  680.         });
  681.       });
  682.  
  683.       if (!schedulerInstanceInstance_) return;
  684.  
  685.  
  686.       if (!ytEvented) {
  687.         idleFrom = Date.now() + 2700;
  688.         slowMode = false; // integrity
  689.       }
  690.  
  691.       const checkOK = typeof schedulerInstanceInstance_.start === 'function' && !schedulerInstanceInstance_.start991 && !schedulerInstanceInstance_.stop && !schedulerInstanceInstance_.cancel && !schedulerInstanceInstance_.terminate && !schedulerInstanceInstance_.interupt;
  692.       if (checkOK) {
  693.  
  694.         schedulerInstanceInstance_.start991 = schedulerInstanceInstance_.start;
  695.  
  696.         let requestingFn = null;
  697.         let requestingArgs = null;
  698.         let requestingDT = 0;
  699.  
  700.         // let timerId = null;
  701.         const entries = [];
  702.         const f = function () {
  703.           requestingFn = this.fn;
  704.           requestingArgs = [...arguments];
  705.           requestingDT = Date.now();
  706.           entries.push({
  707.             fn: requestingFn,
  708.             args: requestingArgs,
  709.             t: requestingDT
  710.           });
  711.           // if (Date.now() < idleFrom) {
  712.           //   timerId = this.fn.apply(window, arguments);
  713.           // } else {
  714.           //   timerId = this.fn.apply(window, arguments);
  715.  
  716.           // }
  717.           // timerId = 12377;
  718.           return 12377;
  719.         }
  720.  
  721.  
  722.         const fakeFns = [
  723.           f.bind({ fn: requestAnimationFrame }),
  724.           f.bind({ fn: setInterval }),
  725.           f.bind({ fn: setTimeout }),
  726.           f.bind({ fn: requestIdleCallback })
  727.         ]
  728.  
  729.  
  730.  
  731.  
  732.         let timerResolve = null;
  733.         setInterval(() => {
  734.           timerResolve && timerResolve();
  735.           timerResolve = null;
  736.           if (!slowMode && Date.now() > idleFrom) slowMode = true;
  737.         }, 250);
  738.  
  739.         let mzt = 0;
  740.  
  741.         let fnSelectorProp = null;
  742.  
  743.         schedulerInstanceInstance_.start = function () {
  744.  
  745.           const mk1 = window.requestAnimationFrame
  746.           const mk2 = window.setInterval
  747.           const mk3 = window.setTimeout
  748.           const mk4 = window.requestIdleCallback
  749.  
  750.           const tThis = this['$$12378$$'] || this;
  751.  
  752.  
  753.           window.requestAnimationFrame = fakeFns[0]
  754.           window.setInterval = fakeFns[1]
  755.           window.setTimeout = fakeFns[2]
  756.           window.requestIdleCallback = fakeFns[3]
  757.  
  758.           fnSelectorProp = null;
  759.  
  760.  
  761.           tThis.start991.call(new Proxy(tThis, {
  762.             get(target, prop, receiver) {
  763.               if (prop === '$$12377$$') return true;
  764.               if (prop === '$$12378$$') return target;
  765.  
  766.               // console.log('get',prop)
  767.               return target[prop]
  768.             },
  769.             set(target, prop, value, receiver) {
  770.               // console.log('set', prop, value)
  771.  
  772.  
  773.               if (value >= 1 && value <= 4) fnSelectorProp = prop;
  774.               if (value === 12377 && fnSelectorProp) {
  775.  
  776.                 const originalSelection = target[fnSelectorProp];
  777.                 const timerIdProp = prop;
  778.  
  779.                 /*
  780.  
  781.  
  782.           case 1:
  783.               var a = this.K;
  784.               this.g = this.I ? window.requestIdleCallback(a, {
  785.                   timeout: 3E3
  786.               }) : window.setTimeout(a, ma);
  787.               break;
  788.           case 2:
  789.               this.g = window.setTimeout(this.M, this.N);
  790.               break;
  791.           case 3:
  792.               this.g = window.requestAnimationFrame(this.L);
  793.               break;
  794.           case 4:
  795.               this.g = window.setTimeout(this.J, 0)
  796.           }
  797.  
  798.           */
  799.  
  800.                 const doForegroundSlowMode = () => {
  801.  
  802.                   const tir = ++mzt;
  803.                   const f = requestingArgs[0];
  804.  
  805.  
  806.                   getForegroundPromise().then(() => {
  807.  
  808.  
  809.                     new Promise(r => {
  810.                       timerResolve = r
  811.                     }).then(() => {
  812.                       if (target[timerIdProp] === -tir) f();
  813.                     });
  814.  
  815.                   })
  816.  
  817.                   target[fnSelectorProp] = 931;
  818.                   target[prop] = -tir;
  819.                 }
  820.  
  821.                 if (target[fnSelectorProp] === 2 && requestingFn === setTimeout) {
  822.                   if (slowMode && !(requestingArgs[1] > 250)) {
  823.  
  824.                     doForegroundSlowMode();
  825.  
  826.                   } else {
  827.                     target[prop] = setTimeout.apply(window, requestingArgs);
  828.  
  829.                   }
  830.  
  831.                 } else if (target[fnSelectorProp] === 3 && requestingFn === requestAnimationFrame) {
  832.  
  833.                   if (slowMode) {
  834.  
  835.                     doForegroundSlowMode();
  836.  
  837.                   } else {
  838.                     target[prop] = requestAnimationFrame.apply(window, requestingArgs);
  839.                   }
  840.  
  841.  
  842.                 } else if (target[fnSelectorProp] === 4 && requestingFn === setTimeout && !requestingArgs[1]) {
  843.  
  844.                   const f = requestingArgs[0];
  845.                   const tir = ++mzt;
  846.                   Promise.resolve().then(() => {
  847.                     if (target[timerIdProp] === -tir) f();
  848.                   });
  849.                   target[fnSelectorProp] = 930;
  850.                   target[prop] = -tir;
  851.  
  852.                 } else if (target[fnSelectorProp] === 1 && (requestingFn === requestIdleCallback || requestingFn === setTimeout)) {
  853.  
  854.                   doForegroundSlowMode();
  855.  
  856.                 } else {
  857.                   // target[prop] = timerId;
  858.                   target[fnSelectorProp] = 0;
  859.                   target[prop] = 0;
  860.                 }
  861.  
  862.                 // *****
  863.                 // console.log('[[set]]', slowMode , prop, value, `fnSelectorProp: ${originalSelection} -> ${target[fnSelectorProp]}`)
  864.               } else {
  865.  
  866.                 target[prop] = value;
  867.               }
  868.               // console.log('set',prop,value)
  869.               return true;
  870.             }
  871.           }));
  872.  
  873.           fnSelectorProp = null;
  874.  
  875.  
  876.           window.requestAnimationFrame = mk1;
  877.           window.setInterval = mk2
  878.           window.setTimeout = mk3
  879.           window.requestIdleCallback = mk4;
  880.  
  881.  
  882.  
  883.         }
  884.  
  885.         schedulerInstanceInstance_.start.toString = function () {
  886.           return schedulerInstanceInstance_.start991.toString();
  887.         }
  888.  
  889.         // const funcNames = [...(schedulerInstanceInstance_.start + "").matchAll(/[\(,]this\.(\w{1,2})[,\)]/g)].map(e => e[1]).map(prop => ({
  890.         //   prop,
  891.         //   value: schedulerInstanceInstance_[prop],
  892.         //   type: typeof schedulerInstanceInstance_[prop]
  893.  
  894.         // }));
  895.         // console.log('fcc', funcNames)
  896.  
  897.  
  898.  
  899.  
  900.       }
  901.     })();
  902.  
  903.  
  904.     FIX_yt_player && (async () => {
  905.  
  906.  
  907.  
  908.       const rafHub = new RAFHub();
  909.  
  910.  
  911.       const _yt_player = await new Promise(resolve => {
  912.  
  913.         let cid = setInterval(() => {
  914.           let t = (((window || 0)._yt_player || 0) || 0);
  915.           if (t) {
  916.  
  917.             clearInterval(cid);
  918.             resolve(t);
  919.           }
  920.         }, 1);
  921.  
  922.         promiseForTamerTimeout.then(() => {
  923.           resolve(null)
  924.         });
  925.  
  926.       });
  927.  
  928.  
  929.  
  930.       if (!_yt_player || typeof _yt_player !== 'object') return;
  931.  
  932.  
  933.  
  934.       let keyZq = getZq(_yt_player);
  935.       let keyVG = getVG(_yt_player);
  936.       let buildVG = _yt_player[keyVG];
  937.       let u = new buildVG({
  938.         api: {},
  939.         element: document.createElement('noscript'),
  940.         api: {},
  941.         hide: () => { }
  942.       }, 250);
  943.       const timeDelayConstructor = u.delay.constructor; // g.br
  944.       // console.log(keyVG, u)
  945.       // buildVG.prototype.show = function(){}
  946.       // _yt_player[keyZq] = g.k
  947.  
  948.       if (!keyZq) return;
  949.  
  950.  
  951.       const g = _yt_player
  952.       let k = keyZq
  953.  
  954.       const gk = g[k];
  955.       if (typeof gk !== 'function') return;
  956.  
  957.       let dummyObject = new gk;
  958.       let nilFunc = () => { };
  959.  
  960.       let nilObj = {};
  961.  
  962.       // console.log(1111111111)
  963.  
  964.       let keyBoolD = '';
  965.       let keyWindow = '';
  966.       let keyFuncC = '';
  967.       let keyCidj = '';
  968.  
  969.       for (const [t, y] of Object.entries(dummyObject)) {
  970.         if (y instanceof Window) keyWindow = t;
  971.       }
  972.  
  973.       const dummyObjectProxyHandler = {
  974.         get(target, prop) {
  975.           let v = target[prop]
  976.           if (v instanceof Window && !keyWindow) {
  977.             keyWindow = t;
  978.           }
  979.           let y = typeof v === 'function' ? nilFunc : typeof v === 'object' ? nilObj : v;
  980.           if (prop === keyWindow) y = {
  981.             requestAnimationFrame(f) {
  982.               return 3;
  983.             },
  984.             cancelAnimationFrame() {
  985.  
  986.             }
  987.           }
  988.           if (!keyFuncC && typeof v === 'function' && !(prop in target.constructor.prototype)) {
  989.             keyFuncC = prop;
  990.           }
  991.           // console.log('[get]', prop, typeof target[prop])
  992.  
  993.  
  994.           return y;
  995.         },
  996.         set(target, prop, value) {
  997.  
  998.           if (typeof value === 'boolean' && !keyBoolD) {
  999.             keyBoolD = prop;
  1000.           }
  1001.           if (typeof value === 'number' && !keyCidj && value >= 2) {
  1002.             keyCidj = prop;
  1003.           }
  1004.  
  1005.           // console.log('[set]', prop, value)
  1006.           target[prop] = value
  1007.  
  1008.           return true;
  1009.         }
  1010.       };
  1011.  
  1012.       dummyObject.start.call(new Proxy(dummyObject, dummyObjectProxyHandler))
  1013.  
  1014.       /*
  1015.             console.log({
  1016.               keyBoolD,
  1017.               keyFuncC,
  1018.               keyWindow,
  1019.               keyCidj
  1020.             })
  1021.  
  1022.             console.log( dummyObject[keyFuncC])
  1023.  
  1024.  
  1025.             console.log(2222222222)
  1026.       */
  1027.  
  1028.  
  1029.  
  1030.  
  1031.       g[k].prototype.start = function () {
  1032.         this.stop();
  1033.         this[keyBoolD] = true;
  1034.         this[keyCidj] = rafHub.request(this[keyFuncC]);
  1035.       }
  1036.         ;
  1037.       g[k].prototype.stop = function () {
  1038.         if (this.isActive() && this[keyCidj]) {
  1039.           rafHub.cancel(this[keyCidj]);
  1040.         }
  1041.         this[keyCidj] = null
  1042.       }
  1043.  
  1044.  
  1045.       /*
  1046.         g[k].start = function() {
  1047.             this.stop();
  1048.             this.D = true;
  1049.             var a = requestAnimationFrame
  1050.               , b = cancelAnimationFrame;
  1051.             this.j =  a.call(this.B, this.C)
  1052.         }
  1053.         ;
  1054.         g[k].stop = function() {
  1055.             if (this.isActive()) {
  1056.                 var a = requestAnimationFrame
  1057.                   , b = cancelAnimationFrame;
  1058.                 b.call(this.B, this.j)
  1059.             }
  1060.             this.j = null
  1061.         }
  1062.       */
  1063.  
  1064.  
  1065.  
  1066.       const keyzo = PERF_471489_ ? getzo(_yt_player) : null;
  1067.  
  1068.       if (keyzo) {
  1069.  
  1070.         k = keyzo
  1071.  
  1072.         const setCSSProp = (() => {
  1073.  
  1074.           let animationPropCapable = false;
  1075.           try {
  1076.             const propName = "--ibxpf"
  1077.             const value = 2;
  1078.             const keyframes = [{
  1079.               [propName]: value
  1080.             }];
  1081.             window.CSS.registerProperty({
  1082.               name: "--ibxpf",
  1083.               syntax: "<number>",
  1084.               inherits: false,
  1085.               initialValue: 1,
  1086.             });
  1087.             animationPropCapable = '1' === `${getComputedStyle(document.documentElement).getPropertyValue('--ibxpf')}`
  1088.           } catch (e) { }
  1089.  
  1090.           if (!animationPropCapable) {
  1091.             return (element, cssProp, value) => {
  1092.  
  1093.  
  1094.               element.style.setProperty(cssProp, value);
  1095.  
  1096.             }
  1097.           }
  1098.  
  1099.           const propMaps = new Map();
  1100.  
  1101.           function setCustomCSSProperty(element, propName, value) {
  1102.             let wm = propMaps.get(propName);
  1103.             if (!wm) {
  1104.  
  1105.               try {
  1106.                 window.CSS.registerProperty({
  1107.                   name: propName,
  1108.                   syntax: "*",
  1109.                   inherits: false
  1110.                 });
  1111.               } catch (e) {
  1112.                 console.warn(e);
  1113.               }
  1114.  
  1115.               propMaps.set(propName, (wm = new WeakMap()));
  1116.             }
  1117.  
  1118.             // Create the animation keyframes with the provided property and value
  1119.             const keyframes = [{
  1120.               [propName]: value
  1121.             }];
  1122.  
  1123.             let currentAnimation = wm.get(element);
  1124.             if (currentAnimation) {
  1125.  
  1126.               currentAnimation.effect.setKeyframes(keyframes);
  1127.  
  1128.             } else {
  1129.  
  1130.  
  1131.  
  1132.               // Set the animation on the element and immediately pause it
  1133.               const animation = animate.call(element, keyframes, {
  1134.                 duration: 1, // Very short duration as we just want to set the value
  1135.                 fill: 'forwards',
  1136.                 iterationStart: 1,
  1137.                 iterations: 2,
  1138.                 direction: 'alternate'
  1139.               });
  1140.  
  1141.  
  1142.               // animation.currentTime = 1;
  1143.               animation.pause();
  1144.  
  1145.               wm.set(element, animation);
  1146.  
  1147.  
  1148.             }
  1149.  
  1150.           }
  1151.  
  1152.           return setCustomCSSProperty;
  1153.  
  1154.  
  1155.         })();
  1156.  
  1157.  
  1158.         const attrUpdateFn = g[k];
  1159.         g['$$original$$' + k] = attrUpdateFn;
  1160.         g[k] = function (a, b, c) {
  1161.  
  1162.           // console.log(140000, a, b, c);
  1163.  
  1164.           let transformType = '';
  1165.           let transformValue = 0;
  1166.           let transformUnit = '';
  1167.  
  1168.           let byPassDefaultFn = false;
  1169.           if (b === "transform" && typeof c === 'string') {
  1170.  
  1171.             byPassDefaultFn = true;
  1172.  
  1173.             const aStyle = a.style;
  1174.  
  1175.             // let beforeMq = aStyle.getPropertyValue('--mq-transform');
  1176.             if (!(a instanceof HTMLElement)) return;
  1177.             if (c.length === 0) {
  1178.  
  1179.             } else if (c.startsWith('scalex(0.') || (c === 'scalex(0)' || c === 'scalex(1)')) {
  1180.               let p = c.substring(7, c.length - 1);
  1181.               let q = p.length >= 1 ? parseFloat(p) : -1;
  1182.               if (q > -1e-5 && q < 1 + 1e-5) {
  1183.                 transformType = 'scalex'
  1184.                 transformValue = q;
  1185.                 transformUnit = '';
  1186.               }
  1187.  
  1188.  
  1189.             } else if (c.startsWith('translateX(') && c.endsWith('px)')) {
  1190.  
  1191.               let p = c.substring(11, c.length - 3);
  1192.               let q = p.length >= 1 ? parseFloat(p) : NaN;
  1193.  
  1194.               if (typeof q === 'number' && !isNaN(q)) {
  1195.                 transformType = 'translateX'
  1196.                 transformValue = q;
  1197.                 transformUnit = 'px';
  1198.               }
  1199.  
  1200.  
  1201.             } else if (c.startsWith('scaley(0.') || (c === 'scaley(0)' || c === 'scaley(1)')) {
  1202.               let p = c.substring(7, c.length - 1);
  1203.               let q = p.length >= 1 ? parseFloat(p) : -1;
  1204.               if (q > -1e-5 && q < 1 + 1e-5) {
  1205.                 transformType = 'scaley'
  1206.                 transformValue = q;
  1207.                 transformUnit = '';
  1208.               }
  1209.  
  1210.  
  1211.             } else if (c.startsWith('translateY(') && c.endsWith('px)')) {
  1212.  
  1213.               let p = c.substring(11, c.length - 3);
  1214.               let q = p.length >= 1 ? parseFloat(p) : NaN;
  1215.  
  1216.               if (typeof q === 'number' && !isNaN(q)) {
  1217.                 transformType = 'translateY'
  1218.                 transformValue = q;
  1219.                 transformUnit = 'px';
  1220.               }
  1221.  
  1222.  
  1223.             }
  1224.  
  1225.             if (transformType) {
  1226.  
  1227.               if (transformType === 'scalex' || transformType === 'scaley') {
  1228.  
  1229.                 const q = transformValue;
  1230.  
  1231.  
  1232.                 /*
  1233.  
  1234.                 let vz = Math.round(steppingScaleN * q);
  1235.                 const customPropName = '--discrete-'+transformType
  1236.  
  1237.                 const currentValue = aStyle.getPropertyValue(customPropName);
  1238.  
  1239.                 const transform = (aStyle.transform || '');
  1240.                 const u = transform.includes(customPropName)
  1241.                 if (`${currentValue}` === `${vz}`) {
  1242.                   if (u) return;
  1243.                 }
  1244.  
  1245.  
  1246.                 setCSSProp(a,customPropName, vz);
  1247.                 // aStyle.setProperty(customPropName, vz)
  1248.  
  1249.                 let ck = '';
  1250.  
  1251.                 if (c.length === 9) ck = c;
  1252.                 else if (!u) ck = c.replace(/[.\d]+/, '0.5');
  1253.  
  1254.                 if (ck && beforeMq !== ck) {
  1255.                   aStyle.setProperty('--mq-transform', ck);
  1256.                 }
  1257.  
  1258.                 if (u) return;
  1259.                 c = `${transformType}(calc(var(--discrete-${transformType})/${steppingScaleN}))`;
  1260.  
  1261.  
  1262.  
  1263.                 */
  1264.  
  1265.                 const vz = +(Math.round(q * steppingScaleN) / steppingScaleN).toFixed(3);
  1266.  
  1267.                 c = `${transformType === 'scalex' ? 'scaleX' : 'scaleY'}(${vz})`
  1268.                 const cv = aStyle.transform;
  1269.  
  1270.                 // console.log(157, cv,c)
  1271.  
  1272.                 if (c === cv) return;
  1273.                 // console.log(257, cv,c)
  1274.  
  1275.                 aStyle.transform = c;
  1276.  
  1277.                 // return;
  1278.  
  1279.               } else if (transformType === 'translateX' || transformType === 'translateY') {
  1280.  
  1281.                 const q = transformValue;
  1282.  
  1283.                 /*
  1284.  
  1285.                 let vz = q.toFixed(1);
  1286.                 const customPropName = '--discrete-'+transformType
  1287.  
  1288.                 const aStyle = a.style;
  1289.                 const currentValue = (aStyle.getPropertyValue(customPropName) || '').replace('px', '');
  1290.  
  1291.  
  1292.                 const transform = (aStyle.transform || '');
  1293.                 const u = transform.includes(customPropName)
  1294.                 if (parseFloat(currentValue).toFixed(1) === vz) {
  1295.                   if (u) return;
  1296.                 }
  1297.  
  1298.                 setCSSProp(a,customPropName, vz + 'px');
  1299.                 // aStyle.setProperty(customPropName, vz + 'px')
  1300.  
  1301.                 let ck = '';
  1302.                 if (c.length === 15) ck = c;
  1303.                 else if (!u) ck = c.replace(/[.\d]+/, '0.5');
  1304.  
  1305.                 if (ck && beforeMq !== ck) {
  1306.                   aStyle.setProperty('--mq-transform', ck);
  1307.                 }
  1308.  
  1309.                 if (u) return;
  1310.                 c = `${transformType}(var(--discrete-${transformType}))`;
  1311.  
  1312.                 */
  1313.  
  1314.  
  1315.                 const vz = +q.toFixed(1);
  1316.  
  1317.                 c = `${transformType}(${vz}${transformUnit})`
  1318.                 const cv = aStyle.transform;
  1319.  
  1320.                 // console.log(158, cv,c)
  1321.  
  1322.                 if (c === cv) return;
  1323.                 // console.log(258, cv,c)
  1324.  
  1325.                 aStyle.transform = c;
  1326.  
  1327.                 // return;
  1328.  
  1329.               } else {
  1330.                 throw new Error();
  1331.               }
  1332.  
  1333.             } else {
  1334.               // if(beforeMq) a.style.setProperty('--mq-transform', '');
  1335.               const cv = aStyle.transform
  1336.               if (!c && !cv) return;
  1337.               else if (c === cv) return;
  1338.               aStyle.transform = c;
  1339.               // return;
  1340.             }
  1341.  
  1342.           } else if (b === "display") {
  1343.  
  1344.             const cv = a.style.display;
  1345.             if (!cv && !c) return;
  1346.             if (cv === c) return;
  1347.  
  1348.  
  1349.           } else if (b === "width") {
  1350.  
  1351.             const cv = a.style.width;
  1352.             if (!cv && !c) return;
  1353.             if (cv === c) return;
  1354.  
  1355.           }
  1356.  
  1357.           // console.log(130000, a, b, c);
  1358.  
  1359.           if (byPassDefaultFn) return;
  1360.           return attrUpdateFn.call(this, a, b, c);
  1361.         }
  1362.  
  1363.  
  1364.         /*
  1365.  
  1366.             g.zo = function(a, b, c) {
  1367.                 if ("string" === typeof b)
  1368.                     (b = yo(a, b)) && (a.style[b] = c);
  1369.                 else
  1370.                     for (var d in b) {
  1371.                         c = a;
  1372.                         var e = b[d]
  1373.                           , f = yo(c, d);
  1374.                         f && (c.style[f] = e)
  1375.                     }
  1376.             }
  1377.  
  1378.  
  1379.         */
  1380.  
  1381.  
  1382.       }
  1383.  
  1384.  
  1385.  
  1386.       const keyuG = PERF_471489_ ? getuG(_yt_player) : null;
  1387.  
  1388.       if (keyuG) {
  1389.  
  1390.         k = keyuG;
  1391.  
  1392.         const gk = g[k];
  1393.         const gkp = gk.prototype;
  1394.  
  1395.  
  1396.         /** @type { Map<string, WeakMap<any, any>> } */
  1397.         const ntLogs = new Map();
  1398.  
  1399.         if (typeof gkp.updateValue === 'function' && gkp.updateValue.length === 2 && !gkp.updateValue31) {
  1400.  
  1401.           gkp.updateValue31 = gkp.updateValue;
  1402.           gkp.updateValue = function (a, b) {
  1403.             if (typeof a !== 'string') return this.updateValue31(a, b);
  1404.  
  1405.             const element = this.element;
  1406.             if (!(element instanceof HTMLElement)) return this.updateValue31(a, b);
  1407.  
  1408.             let ntLog = ntLogs.get(a);
  1409.             if (!ntLog) ntLogs.set(a, (ntLog = new WeakMap()));
  1410.  
  1411.             let cache = ntLog.get(element);
  1412.             if (cache && cache.value === b) {
  1413.               return;
  1414.             }
  1415.             if (!cache) {
  1416.               this.__oldValueByUpdateValue__ = null;
  1417.               ntLog.set(element, cache = { value: b });
  1418.             } else {
  1419.               this.__oldValueByUpdateValue__ = cache.value;
  1420.               cache.value = b;
  1421.             }
  1422.  
  1423.  
  1424.             return this.updateValue31(a, b);
  1425.           }
  1426.  
  1427.  
  1428.           /*
  1429.             g.k.update = function(a) {
  1430.                 for (var b = g.u(Object.keys(a)), c = b.next(); !c.done; c = b.next())
  1431.                     c = c.value,
  1432.                     this.updateValue(c, a[c])
  1433.             }
  1434.             ;
  1435.             g.k.updateValue = function(a, b) {
  1436.                 (a = this.Td["{{" + a + "}}"]) && wG(this, a[0], a[1], b)
  1437.             }
  1438.           */
  1439.  
  1440.  
  1441.         }
  1442.  
  1443.  
  1444.       }
  1445.  
  1446.  
  1447.  
  1448.  
  1449.     })();
  1450.  
  1451.  
  1452.  
  1453.     FIX_Animation_n_timeline && (async () => {
  1454.  
  1455.  
  1456.       const timeline = await new Promise(resolve => {
  1457.  
  1458.         let cid = setInterval(() => {
  1459.           let t = (((document || 0).timeline || 0) || 0);
  1460.           if (t && typeof t._play === 'function') {
  1461.  
  1462.             clearInterval(cid);
  1463.             resolve(t);
  1464.           }
  1465.         }, 1);
  1466.  
  1467.         promiseForTamerTimeout.then(() => {
  1468.           resolve(null)
  1469.         });
  1470.  
  1471.       });
  1472.  
  1473.  
  1474.       const Animation = await new Promise(resolve => {
  1475.  
  1476.         let cid = setInterval(() => {
  1477.           let t = (((window || 0).Animation || 0) || 0);
  1478.           if (t && typeof t === 'function' && t.length === 2 && typeof t.prototype._updatePromises === 'function') {
  1479.  
  1480.             clearInterval(cid);
  1481.             resolve(t);
  1482.           }
  1483.         }, 1);
  1484.  
  1485.         promiseForTamerTimeout.then(() => {
  1486.           resolve(null)
  1487.         });
  1488.  
  1489.       });
  1490.  
  1491.       if (!timeline) return;
  1492.       if (!Animation) return;
  1493.  
  1494.       const aniProto = Animation.prototype;
  1495.  
  1496.       const getXroto = (x) => {
  1497.         try {
  1498.           return x.__proto__;
  1499.         } catch (e) { }
  1500.         return null;
  1501.       }
  1502.       const timProto = getXroto(timeline);
  1503.       if (!timProto) return;
  1504.       if (
  1505.         (
  1506.           typeof timProto.getAnimations === 'function' && typeof timProto.play === 'function' &&
  1507.           typeof timProto._discardAnimations === 'function' && typeof timProto._play === 'function' &&
  1508.           typeof timProto._updateAnimationsPromises === 'function' && !timProto.nofCQ &&
  1509.           typeof aniProto._updatePromises === 'function' && !aniProto.nofYH
  1510.         )
  1511.  
  1512.       ) {
  1513.  
  1514.         timProto.nofCQ = 1;
  1515.         aniProto.nofYH = 1;
  1516.  
  1517.         const originalAnimationsWithPromises = ((_updateAnimationsPromises) => {
  1518.  
  1519.  
  1520.           /*
  1521.             v.animationsWithPromises = v.animationsWithPromises.filter(function (c) {
  1522.               return c._updatePromises();
  1523.             });
  1524.           */
  1525.  
  1526.           const p = Array.prototype.filter;
  1527.  
  1528.           let res = null;
  1529.           Array.prototype.filter = function () {
  1530.  
  1531.             res = this;
  1532.             return this;
  1533.  
  1534.           };
  1535.  
  1536.           _updateAnimationsPromises.call({});
  1537.  
  1538.           Array.prototype.filter = p;
  1539.  
  1540.           if (res && typeof res.length === 'number') {
  1541.             /** @type {any[]} */
  1542.             const _res = res;
  1543.             return _res;
  1544.           }
  1545.  
  1546.  
  1547.           return null;
  1548.  
  1549.  
  1550.  
  1551.  
  1552.         })(timProto._updateAnimationsPromises);
  1553.  
  1554.         if (!originalAnimationsWithPromises || typeof originalAnimationsWithPromises.length !== 'number') return;
  1555.  
  1556.         // console.log('originalAnimationsWithPromises', originalAnimationsWithPromises)
  1557.  
  1558.         aniProto._updatePromises31 = aniProto._updatePromises;
  1559.  
  1560.         /*
  1561.         aniProto._updatePromises = function(){
  1562.           console.log('eff',this._oldPlayState, this.playState)
  1563.           return this._updatePromises31.apply(this, arguments)
  1564.         }
  1565.         */
  1566.  
  1567.         aniProto._updatePromises = function () {
  1568.           var oldPlayState = this._oldPlayState;
  1569.           var newPlayState = this.playState;
  1570.           // console.log('ett', oldPlayState, newPlayState)
  1571.           if (newPlayState !== oldPlayState) {
  1572.             this._oldPlayState = newPlayState;
  1573.             if (this._readyPromise) {
  1574.               if ("idle" == newPlayState) {
  1575.                 this._rejectReadyPromise();
  1576.                 this._readyPromise = void 0;
  1577.               } else if ("pending" == oldPlayState) {
  1578.                 this._resolveReadyPromise();
  1579.               } else if ("pending" == newPlayState) {
  1580.                 this._readyPromise = void 0;
  1581.               }
  1582.             }
  1583.             if (this._finishedPromise) {
  1584.               if ("idle" == newPlayState) {
  1585.                 this._rejectFinishedPromise();
  1586.                 this._finishedPromise = void 0;
  1587.               } else if ("finished" == newPlayState) {
  1588.                 this._resolveFinishedPromise();
  1589.               } else if ("finished" == oldPlayState) {
  1590.                 this._finishedPromise = void 0;
  1591.               }
  1592.             }
  1593.           }
  1594.           return this._readyPromise || this._finishedPromise;
  1595.         };
  1596.  
  1597.  
  1598.         let restartWebAnimationsNextTickFlag = false;
  1599.  
  1600.         const looperMethodT = () => {
  1601.  
  1602.           const runnerFn = (hRes) => {
  1603.             var b = timeline;
  1604.             b.currentTime = hRes;
  1605.             b._discardAnimations();
  1606.             if (0 == b._animations.length) {
  1607.               restartWebAnimationsNextTickFlag = false;
  1608.             } else {
  1609.               getRafPromiseForTickers().then(runnerFn);
  1610.             }
  1611.           }
  1612.  
  1613.           const restartWebAnimationsNextTick = () => {
  1614.             if (!restartWebAnimationsNextTickFlag) {
  1615.               restartWebAnimationsNextTickFlag = true;
  1616.               getRafPromiseForTickers().then(runnerFn);
  1617.             }
  1618.           }
  1619.  
  1620.           return { restartWebAnimationsNextTick }
  1621.         };
  1622.  
  1623.  
  1624.         const looperMethodN = () => {
  1625.  
  1626.           const acs = document.createElement('a-f');
  1627.           acs.id = 'a-f';
  1628.  
  1629.           const style = document.createElement('style');
  1630.           style.textContent = `
  1631.             @keyFrames aF1 {
  1632.               0% {
  1633.                 order: 0;
  1634.               }
  1635.               100% {
  1636.                 order: 6;
  1637.               }
  1638.             }
  1639.             #a-f[id] {
  1640.               visibility: collapse !important;
  1641.               position: fixed !important;
  1642.               top: -100px !important;
  1643.               left: -100px !important;
  1644.               margin:0 !important;
  1645.               padding:0 !important;
  1646.               outline:0 !important;
  1647.               border:0 !important;
  1648.               z-index:-1 !important;
  1649.               width: 0px !important;
  1650.               height: 0px !important;
  1651.               contain: strict !important;
  1652.               pointer-events: none !important;
  1653.               animation: 1ms steps(2) 0ms infinite alternate forwards running aF1 !important;
  1654.             }
  1655.           `;
  1656.           (document.head || document.documentElement).appendChild(style);
  1657.  
  1658.           document.documentElement.insertBefore(acs, document.documentElement.firstChild);
  1659.  
  1660.           const _onanimationiteration = function (evt) {
  1661.             const hRes = evt.timeStamp;
  1662.             var b = timeline;
  1663.             b.currentTime = hRes;
  1664.             b._discardAnimations();
  1665.             if (0 == b._animations.length) {
  1666.               restartWebAnimationsNextTickFlag = false;
  1667.               acs.onanimationiteration = null;
  1668.             } else {
  1669.               acs.onanimationiteration = _onanimationiteration;
  1670.             }
  1671.  
  1672.           }
  1673.  
  1674.  
  1675.  
  1676.           const restartWebAnimationsNextTick = () => {
  1677.             if (!restartWebAnimationsNextTickFlag) {
  1678.               restartWebAnimationsNextTickFlag = true;
  1679.               acs.onanimationiteration = _onanimationiteration;
  1680.  
  1681.             }
  1682.           }
  1683.  
  1684.           return { restartWebAnimationsNextTick }
  1685.         };
  1686.  
  1687.  
  1688.  
  1689.         const { restartWebAnimationsNextTick } = ('onanimationiteration' in document.documentElement) ? looperMethodN() : looperMethodT();
  1690.  
  1691.         timProto._play = function (c) {
  1692.           c = new Animation(c, this);
  1693.           this._animations.push(c);
  1694.           restartWebAnimationsNextTick();
  1695.           c._updatePromises();
  1696.           c._animation.play();
  1697.           c._updatePromises();
  1698.           return c
  1699.         }
  1700.  
  1701.         const animationsWithPromisesMap = new Set(originalAnimationsWithPromises);
  1702.         originalAnimationsWithPromises.length = 0;
  1703.         originalAnimationsWithPromises.push = null;
  1704.         originalAnimationsWithPromises.splice = null;
  1705.         originalAnimationsWithPromises.slice = null;
  1706.         originalAnimationsWithPromises.indexOf = null;
  1707.         originalAnimationsWithPromises.unshift = null;
  1708.         originalAnimationsWithPromises.shift = null;
  1709.         originalAnimationsWithPromises.pop = null;
  1710.         originalAnimationsWithPromises.filter = null;
  1711.         originalAnimationsWithPromises.forEach = null;
  1712.         originalAnimationsWithPromises.map = null;
  1713.  
  1714.  
  1715.  
  1716.         const _updateAnimationsPromises = () => {
  1717.           animationsWithPromisesMap.forEach(c => {
  1718.             if (!c._updatePromises()) animationsWithPromisesMap.delete(c);
  1719.           })
  1720.           /*
  1721.           v.animationsWithPromises = v.animationsWithPromises.filter(function (c) {
  1722.             return c._updatePromises();
  1723.           });
  1724.           */
  1725.         }
  1726.  
  1727.         timProto._updateAnimationsPromises31 = timProto._updateAnimationsPromises;
  1728.  
  1729.         timProto._updateAnimationsPromises = _updateAnimationsPromises;
  1730.  
  1731.  
  1732.         let pdFinished = Object.getOwnPropertyDescriptor(aniProto, 'finished');
  1733.         aniProto.__finished_native_get__ = pdFinished.get;
  1734.         if (typeof pdFinished.get === 'function' && !pdFinished.set && pdFinished.configurable === true && pdFinished.enumerable === true) {
  1735.  
  1736.  
  1737.           Object.defineProperty(aniProto, 'finished', {
  1738.             get() {
  1739.               this._finishedPromise || (!animationsWithPromisesMap.has(this) && animationsWithPromisesMap.add(this),
  1740.                 this._finishedPromise = new Promise((resolve, reject) => {
  1741.                   this._resolveFinishedPromise = function () {
  1742.                     resolve(this)
  1743.                   };
  1744.                   this._rejectFinishedPromise = function () {
  1745.                     reject({
  1746.                       type: DOMException.ABORT_ERR,
  1747.                       name: "AbortError"
  1748.                     })
  1749.                   };
  1750.                 }),
  1751.                 "finished" == this.playState && this._resolveFinishedPromise());
  1752.               return this._finishedPromise
  1753.             },
  1754.             set: undefined,
  1755.             enumerable: true,
  1756.             configurable: true
  1757.           });
  1758.  
  1759.         }
  1760.  
  1761.  
  1762.  
  1763.         let pdReady = Object.getOwnPropertyDescriptor(aniProto, 'ready');
  1764.         aniProto.__ready_native_get__ = pdReady.get;
  1765.         if (typeof pdReady.get === 'function' && !pdReady.set && pdReady.configurable === true && pdReady.enumerable === true) {
  1766.  
  1767.           Object.defineProperty(aniProto, 'ready', {
  1768.             get() {
  1769.               this._readyPromise || (!animationsWithPromisesMap.has(this) && animationsWithPromisesMap.add(this),
  1770.                 this._readyPromise = new Promise((resolve, reject) => {
  1771.                   this._resolveReadyPromise = function () {
  1772.                     resolve(this)
  1773.                   };
  1774.                   this._rejectReadyPromise = function () {
  1775.                     reject({
  1776.                       type: DOMException.ABORT_ERR,
  1777.                       name: "AbortError"
  1778.                     })
  1779.                   };
  1780.                 }),
  1781.                 "pending" !== this.playState && this._resolveReadyPromise());
  1782.               return this._readyPromise
  1783.             },
  1784.             set: undefined,
  1785.             enumerable: true,
  1786.             configurable: true
  1787.           });
  1788.  
  1789.         }
  1790.  
  1791.  
  1792.  
  1793.  
  1794.         /*
  1795.  
  1796.  
  1797.           function f(c) {
  1798.               var b = v.timeline;
  1799.               b.currentTime = c;
  1800.               b._discardAnimations();
  1801.               0 == b._animations.length ? d = !1 : requestAnimationFrame(f)
  1802.           }
  1803.           var h = window.requestAnimationFrame;
  1804.           window.requestAnimationFrame = function(c) {
  1805.               return h(function(b) {
  1806.                   v.timeline._updateAnimationsPromises();
  1807.                   c(b);
  1808.                   v.timeline._updateAnimationsPromises()
  1809.               })
  1810.           }
  1811.           ;
  1812.           v.AnimationTimeline = function() {
  1813.               this._animations = [];
  1814.               this.currentTime = void 0
  1815.           }
  1816.           ;
  1817.           v.AnimationTimeline.prototype = {
  1818.               getAnimations: function() {
  1819.                   this._discardAnimations();
  1820.                   return this._animations.slice()
  1821.               },
  1822.               _updateAnimationsPromises: function() {
  1823.                   v.animationsWithPromises = v.animationsWithPromises.filter(function(c) {
  1824.                       return c._updatePromises()
  1825.                   })
  1826.               },
  1827.               _discardAnimations: function() {
  1828.                   this._updateAnimationsPromises();
  1829.                   this._animations = this._animations.filter(function(c) {
  1830.                       return "finished" != c.playState && "idle" != c.playState
  1831.                   })
  1832.               },
  1833.               _play: function(c) {
  1834.                   c = new v.Animation(c,this);
  1835.                   this._animations.push(c);
  1836.                   v.restartWebAnimationsNextTick();
  1837.                   c._updatePromises();
  1838.                   c._animation.play();
  1839.                   c._updatePromises();
  1840.                   return c
  1841.               },
  1842.               play: function(c) {
  1843.                   c && c.remove();
  1844.                   return this._play(c)
  1845.               }
  1846.           };
  1847.           var d = !1;
  1848.           v.restartWebAnimationsNextTick = function() {
  1849.               d || (d = !0,
  1850.               requestAnimationFrame(f))
  1851.           }
  1852.           ;
  1853.           var a = new v.AnimationTimeline;
  1854.           v.timeline = a;
  1855.           try {
  1856.               Object.defineProperty(window.document, "timeline", {
  1857.                   configurable: !0,
  1858.                   get: function() {
  1859.                       return a
  1860.                   }
  1861.               })
  1862.           } catch (c) {}
  1863.           try {
  1864.               window.document.timeline = a
  1865.           } catch (c) {}
  1866.  
  1867.         */
  1868.  
  1869.  
  1870.  
  1871.         /*
  1872.  
  1873.       var g = window.getComputedStyle;
  1874.       Object.defineProperty(window, "getComputedStyle", {
  1875.           configurable: !0,
  1876.           enumerable: !0,
  1877.           value: function() {
  1878.               v.timeline._updateAnimationsPromises();
  1879.               var e = g.apply(this, arguments);
  1880.               h() && (e = g.apply(this, arguments));
  1881.               v.timeline._updateAnimationsPromises();
  1882.               return e
  1883.           }
  1884.       });
  1885.  
  1886.       */
  1887.  
  1888.  
  1889.  
  1890.  
  1891.       }
  1892.  
  1893.  
  1894.  
  1895.  
  1896.     })();
  1897.  
  1898.  
  1899.  
  1900.   });
  1901.  
  1902.  
  1903.   setupEvents();
  1904.  
  1905.  
  1906.  
  1907.   if (isMainWindow) {
  1908.  
  1909.     console.groupCollapsed(
  1910.       "%cYouTube JS Engine Tamer",
  1911.       "background-color: #EDE43B ; color: #000 ; font-weight: bold ; padding: 4px ;"
  1912.     );
  1913.  
  1914.     console.log("Script is loaded.");
  1915.     console.log("This script changes the core mechanisms of the YouTube JS engine.");
  1916.  
  1917.     console.log("This script is experimental and subject to further changes.");
  1918.  
  1919.     console.log("This might boost your YouTube performance.");
  1920.  
  1921.     console.log("CAUTION: This might break your YouTube.");
  1922.  
  1923.     console.groupEnd();
  1924.  
  1925.   }
  1926.  
  1927.  
  1928. })();