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YouTube 超快聊天

YouTube直播聊天的终极性能提升

当前为 2023-08-28 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.53.5
  4. // @license             MIT
  5. // @name:ja             YouTube スーパーファーストチャット
  6. // @name:zh-TW          YouTube 超快聊天
  7. // @name:zh-CN          YouTube 超快聊天
  8. // @icon                https://github.com/cyfung1031/userscript-supports/raw/main/icons/super-fast-chat.png
  9. // @namespace           UserScript
  10. // @match               https://www.youtube.com/live_chat*
  11. // @match               https://www.youtube.com/live_chat_replay*
  12. // @author              CY Fung
  13. // @run-at              document-start
  14. // @grant               none
  15. // @unwrap
  16. // @allFrames           true
  17. // @inject-into         page
  18. //
  19. // @compatible          firefox Violentmonkey
  20. // @compatible          firefox Tampermonkey
  21. // @compatible          firefox FireMonkey
  22. // @compatible          chrome Violentmonkey
  23. // @compatible          chrome Tampermonkey
  24. // @compatible          opera Violentmonkey
  25. // @compatible          opera Tampermonkey
  26. // @compatible          safari Stay
  27. // @compatible          edge Violentmonkey
  28. // @compatible          edge Tampermonkey
  29. // @compatible          brave Violentmonkey
  30. // @compatible          brave Tampermonkey
  31. //
  32. // @description         Ultimate Performance Boost for YouTube Live Chats
  33. // @description:ja      YouTubeのライブチャットの究極のパフォーマンスブースト
  34. // @description:zh-TW   YouTube直播聊天的終極性能提升
  35. // @description:zh-CN   YouTube直播聊天的终极性能提升
  36. //
  37. // ==/UserScript==
  38.  
  39. ((__CONTEXT__) => {
  40.   'use strict';
  41.  
  42.   const ENABLE_REDUCED_MAXITEMS_FOR_FLUSH = true;         // TRUE to enable trimming down to MAX_ITEMS_FOR_FULL_FLUSH (25) messages when there are too many unrendered messages
  43.   const MAX_ITEMS_FOR_TOTAL_DISPLAY = 90;                 // By default, 250 latest messages will be displayed, but displaying MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages is already sufficient.
  44.   const MAX_ITEMS_FOR_FULL_FLUSH = 25;                    // If there are too many new (stacked) messages not yet rendered, clean all and flush MAX_ITEMS_FOR_FULL_FLUSH (25) latest messages then incrementally added back to MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages
  45.  
  46.   const ENABLE_NO_SMOOTH_TRANSFORM = true;                // Depends on whether you want the animation effect for new chat messages
  47.   const USE_OPTIMIZED_ON_SCROLL_ITEMS = true;             // TRUE for the majority
  48.   const USE_WILL_CHANGE_CONTROLLER = false;               // FALSE for the majority
  49.   const ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED = true;  // In Chrome, the rendering of new chat messages could be too fast for no smooth transform. 80ms delay of displaying new messages should be sufficient for element rendering.
  50.   const ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  51.  
  52.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  53.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  54.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  55.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  56.  
  57.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  58.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  59.  
  60.   // Replace requestAnimationFrame timers with custom implementation
  61.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  62.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  63.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  64.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  65.  
  66.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  67.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  68.  
  69.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  70.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  71.  
  72.   // Data Manipulation for Participants (Participant List)
  73.   // << if DO_PARTICIPANT_LIST_HACKS >>
  74.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  75.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  76.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  77.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  78.   // << end >>
  79.  
  80.   // show more button
  81.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  82.  
  83.   // faster stampDomArray_ for participants list creation
  84.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  85.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  86.  
  87.   // reuse yt components
  88.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  89.  
  90.   // images <Group#I01>
  91.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  92.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  93.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  94.  
  95.   const DO_LINK_PREFETCH = true;                      // DO NOT CHANGE
  96.   // << if DO_LINK_PREFETCH >>
  97.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  98.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  99.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  100.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  101.   // << end >>
  102.  
  103.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  104.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  105.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  106.  
  107.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  108.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  109.  
  110.   const ATTEMPT_ANIMATED_TICKER_BACKGROUND = 'steps'   // false OR '' for disabled, 'linear', 'steps' for easing-function
  111.   // << if ATTEMPT_ANIMATED_TICKER_BACKGROUND >>
  112.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  113.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  114.   // [limiting 500 max steps] is recommended for "confortable visual change"
  115.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  116.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  117.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  118.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  119.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  120.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  121.   // << end >>
  122.  
  123.   const FIX_TOOLTIP_DISPLAY = true;
  124.   const USE_VANILLA_DEREF = true;
  125.   const FIX_DROPDOWN_DERAF = true;                        // DONT CHANGE
  126.  
  127.  
  128.   const CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true;        // cache the menu data and used for the next reopen
  129.   const ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU = true; // pause auto scroll faster when the context menu is about to show
  130.   const ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU = true;        // avoid multiple requests on the same time
  131.  
  132.   const BOOST_MENU_OPENCHANGED_RENDERING = true;
  133.   const FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK = true;  // click again = close
  134.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true; // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  135.   // const FIX_MENU_CAPTURE_SCROLL = true;
  136.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;        // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  137.  
  138.   const RAF_FIX_keepScrollClamped = true;
  139.   const RAF_FIX_scrollIncrementally = 2;            // 0: no action; 1: basic fix; 2: also fix scroll position
  140.  
  141.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  142.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  143.  
  144.   const DE_JSONPRUNE_FOR_readyStateChangeHandler_ = 1; // jsonPrune for Ad-Blocking is not applicable to live_chat streaming
  145.   // << end >>
  146.  
  147.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  148.  
  149.   const CHANGE_DATA_FLUSH_ASYNC = true;
  150.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  151.  
  152.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  153.   // 0 = default Yt animation background [= no fix]; 
  154.   // 1 = disable default animation background [= keep special animation]; 
  155.   // 2 = disable all animation backgrounds [= no animation backbround]
  156.  
  157.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  158.  
  159.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  160.   /*
  161.  
  162.     ### Time Approach
  163.  
  164.     // all below values can make the time interval > 250ms
  165.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  166.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  167.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  168.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  169.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  170.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  171.  
  172.     ### Pixel Check
  173.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  174.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  175.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  176.  
  177.     ### Example - totalDuration = 280000
  178.     totalDuration 280000
  179.     stepInterval 0.5
  180.     numOfSteps = Math.round(100 / stepInterval) = 200
  181.     time interval = 280000 / 200 = 1400ms <acceptable>
  182.  
  183.     ### Example - totalDuration = 18000
  184.     totalDuration 18000
  185.     stepInterval 5
  186.     numOfSteps = Math.round(100 / stepInterval) = 20
  187.     time interval = 18000 / 20 = 900ms <acceptable>
  188.  
  189.     ### Example - totalDuration = 5000
  190.     totalDuration 5000
  191.     stepInterval 5
  192.     numOfSteps = Math.round(100 / stepInterval) = 20
  193.     time interval = 5000 / 20 = 250ms <threshold value>
  194.  
  195.     ### Example - totalDuration = 3600
  196.     totalDuration 3600
  197.     stepInterval 5
  198.     numOfSteps = Math.round(100 / stepInterval) = 20
  199.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  200.  
  201.   */
  202.  
  203.   // =======================================================================================================
  204.  
  205.   // AUTOMAICALLY DETERMINED
  206.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  207.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  208.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  209.   let runTickerClassName = 'run-ticker';
  210.  
  211.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  212.   /*
  213.     WebP: data:image/webp;base64,UklGRjAB
  214.     PNG: data:image/png;base64,iVBORw0KGg==
  215.     JPEG: data:image/jpeg;base64,/9j/4AA=
  216.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  217.     BMP: data:image/bmp;base64,Qk1oAAAA
  218.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  219.  
  220.     WebP: data:image/webp;base64,AAAAAAA=
  221.     PNG:  data:image/png;base64,AAAAAAA=
  222.     JPEG: data:image/jpeg;base64,AAAAAAA=
  223.     GIF:  data:image/gif;base64,AAAAAAA=
  224.     BMP:  data:image/bmp;base64,AAAAAAA=
  225.  
  226.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  227.  
  228.  
  229.   */
  230.  
  231.   // image sizing code
  232.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  233.  
  234.  
  235.   //   function KC(a, b, c, d) {
  236.   //     d = void 0 === d ? "width" : d;
  237.   //     if (!a || !a.length)
  238.   //         return null;
  239.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  240.   //         var e = window.devicePixelRatio;
  241.   //         z("kevlar_tuner_should_clamp_device_pixel_ratio") ? e = Math.min(e, zl("kevlar_tuner_clamp_device_pixel_ratio")) : z("kevlar_tuner_should_use_thumbnail_factor") && (e = zl("kevlar_tuner_thumbnail_factor"));
  242.   //         HC = e
  243.   //     } else
  244.   //         HC || (HC = window.devicePixelRatio);
  245.   //     e = HC;
  246.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  247.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  248.   //         return a[0].url || null;
  249.   //     e = a.length;
  250.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  251.   //         return a[e - 1].url || null;
  252.   //     if (c)
  253.   //         for (var h = 0; h < e; h++)
  254.   //             if (0 <= a[h].url.indexOf(c))
  255.   //                 return a[h].url || null;
  256.   //     for (c = 0; c < e; c++)
  257.   //         if (a[c][d] >= b)
  258.   //             return a[c].url || null;
  259.   //     for (b = e - 1; 0 < b; b--)
  260.   //         if (a[b][d])
  261.   //             return a[b].url || null;
  262.   //     return a[0].url || null
  263.   // }
  264.  
  265.   const { IntersectionObserver } = __CONTEXT__;
  266.  
  267.   /** @type {globalThis.PromiseConstructor} */
  268.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  269.  
  270.   let jsonParseFix = null;
  271.  
  272.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  273.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  274.  
  275.   // necessity of cssText3_smooth_transform_position to be checked.
  276.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  277.  
  278.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  279.         position: static !important;
  280.     }
  281.  
  282.   `: '';
  283.  
  284.   // fallback if dummy style fn fails
  285.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  286.  
  287.     /* optional */
  288.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  289.         height: auto !important;
  290.         min-height: unset !important;
  291.     }
  292.  
  293.     #items.style-scope.yt-live-chat-item-list-renderer {
  294.         transform: translateY(0px) !important;
  295.     }
  296.  
  297.     /* optional */
  298.  
  299.   `: '';
  300.  
  301.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  302.  
  303.     /* ------------------------------------------------------------------------------------------------------------- */
  304.  
  305.     yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image img {
  306.         contain: layout style;
  307.     }
  308.  
  309.     #items.style-scope.yt-live-chat-item-list-renderer {
  310.         contain: layout paint style;
  311.     }
  312.  
  313.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  314.         contain: style;
  315.     }
  316.  
  317.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  318.         contain: size style;
  319.     }
  320.  
  321.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  322.         contain: size layout paint style;
  323.     }
  324.  
  325.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  326.         contain: layout paint style;
  327.     }
  328.  
  329.     yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-membership-item-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-paid-message-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-banner-manager.style-scope.yt-live-chat-item-list-renderer {
  330.         contain: layout style;
  331.     }
  332.  
  333.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  334.         contain: layout paint style;
  335.     }
  336.  
  337.     /* ------------------------------------------------------------------------------------------------------------- */
  338.  
  339.   ` : '';
  340.  
  341.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  342.  
  343.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  344.         top: 4px;
  345.         transition-property: top;
  346.         bottom: unset;
  347.     }
  348.  
  349.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  350.         top: -42px;
  351.     }
  352.  
  353.   `: '';
  354.  
  355.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  356.  
  357.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  358.         contain: layout style;
  359.     }
  360.  
  361.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  362.         overflow: visible;
  363.     }
  364.  
  365.   `: '';
  366.  
  367.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  368.  
  369.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  370.         --yt-live-chat-action-panel-top-border: none;
  371.     }
  372.  
  373.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  374.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  375.     }
  376.  
  377.     html #panel-pages.yt-live-chat-renderer {
  378.         border-top: 0;
  379.         border-bottom: 0;
  380.     }
  381.  
  382.   `: '';
  383.  
  384.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  385.  
  386.     img,
  387.     yt-img-shadow[height][width],
  388.     yt-img-shadow {
  389.         content-visibility: visible !important;
  390.     }
  391.  
  392.   `  : '';
  393.  
  394.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  395.  
  396.     /* remove YouTube constant will-change */
  397.     /* constant value will slow down the performance; default auto */
  398.  
  399.     /* www-player.css */
  400.     html .ytp-contextmenu,
  401.     html .ytp-settings-menu {
  402.         will-change: unset;
  403.     }
  404.  
  405.     /* frequently matched elements */
  406.     html .fill.yt-interaction,
  407.     html .stroke.yt-interaction,
  408.     html .yt-spec-touch-feedback-shape__fill,
  409.     html .yt-spec-touch-feedback-shape__stroke {
  410.         will-change: unset;
  411.     }
  412.  
  413.     /* live_chat_polymer.js */
  414.     /*
  415.     html .toggle-button.tp-yt-paper-toggle-button,
  416.     html #primaryProgress.tp-yt-paper-progress,
  417.     html #secondaryProgress.tp-yt-paper-progress,
  418.     html #onRadio.tp-yt-paper-radio-button,
  419.     html .fill.yt-interaction,
  420.     html .stroke.yt-interaction,
  421.     html .yt-spec-touch-feedback-shape__fill,
  422.     html .yt-spec-touch-feedback-shape__stroke {
  423.         will-change: unset;
  424.     }
  425.     */
  426.  
  427.     /* desktop_polymer_enable_wil_icons.js */
  428.     /* html .fill.yt-interaction,
  429.     html .stroke.yt-interaction, */
  430.     html tp-yt-app-header::before,
  431.     html tp-yt-iron-list,
  432.     html #items.tp-yt-iron-list > *,
  433.     html #onRadio.tp-yt-paper-radio-button,
  434.     html .toggle-button.tp-yt-paper-toggle-button,
  435.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  436.     html #items.ytd-post-multi-image-renderer,
  437.     html #items.ytd-horizontal-card-list-renderer,
  438.     html #items.yt-horizontal-list-renderer,
  439.     html #left-arrow.yt-horizontal-list-renderer,
  440.     html #right-arrow.yt-horizontal-list-renderer,
  441.     html #items.ytd-video-description-infocards-section-renderer,
  442.     html #items.ytd-video-description-music-section-renderer,
  443.     html #chips.ytd-feed-filter-chip-bar-renderer,
  444.     html #chips.yt-chip-cloud-renderer,
  445.     html #items.ytd-merch-shelf-renderer,
  446.     html #items.ytd-product-details-image-carousel-renderer,
  447.     html ytd-video-preview,
  448.     html #player-container.ytd-video-preview,
  449.     html #primaryProgress.tp-yt-paper-progress,
  450.     html #secondaryProgress.tp-yt-paper-progress,
  451.     html ytd-miniplayer[enabled] /* ,
  452.     html .yt-spec-touch-feedback-shape__fill,
  453.     html .yt-spec-touch-feedback-shape__stroke */ {
  454.         will-change: unset;
  455.     }
  456.  
  457.     /* other */
  458.     .ytp-videowall-still-info-content[class],
  459.     .ytp-suggestion-image[class] {
  460.         will-change: unset !important;
  461.     }
  462.  
  463.   ` : '';
  464.  
  465.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  466.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  467.  
  468.     elzm-fonts {
  469.         visibility: collapse;
  470.         position: fixed;
  471.         top: -10px;
  472.         left: -10px;
  473.         font-size: 10pt;
  474.         line-height: 100%;
  475.         width: 100px;
  476.         height: 100px;
  477.         transform: scale(0.1);
  478.         transform: scale(0.01);
  479.         transform: scale(0.001);
  480.         transform-origin: 0 0;
  481.         contain: strict;
  482.         display: block;
  483.  
  484.         pointer-events: none !important;
  485.         user-select: none !important;
  486.     }
  487.  
  488.     elzm-fonts[id]#elzm-fonts-yk75g {
  489.         user-select: none !important;
  490.         pointer-events: none !important;
  491.     }
  492.  
  493.     elzm-font {
  494.         visibility: collapse;
  495.         position: absolute;
  496.         line-height: 100%;
  497.         width: 100px;
  498.         height: 100px;
  499.         contain: strict;
  500.         display: block;
  501.  
  502.         user-select: none !important;
  503.         pointer-events: none !important;
  504.     }
  505.  
  506.     elzm-font::before {
  507.         visibility: collapse;
  508.         position: absolute;
  509.         line-height: 100%;
  510.         width: 100px;
  511.         height: 100px;
  512.         contain: strict;
  513.         display: block;
  514.  
  515.         content: '0aZ!@#$~^&*()_-+[]{}|;:><?\\0460\\0301\\0900\\1F00\\0370\\0102\\0100\\28EB2\\28189\\26DA0\\25A9C\\249BB\\23F61\\22E8B\\21927\\21076\\2048E\\1F6F5\\FF37\\F94F\\F0B2\\9F27\\9D9A\\9BEA\\9A6B\\98EC\\9798\\9602\\949D\\9370\\926B\\913A\\8FA9\\8E39\\8CC1\\8B26\\8983\\8804\\8696\\8511\\83BC\\828D\\8115\\7F9A\\7E5B\\7D07\\7B91\\7A2C\\78D2\\776C\\7601\\74AA\\73B9\\7265\\70FE\\6FBC\\6E88\\6D64\\6C3F\\6A9C\\6957\\67FE\\66B3\\6535\\63F2\\628E\\612F\\5FE7\\5E6C\\5CEE\\5B6D\\5A33\\58BC\\575B\\5611\\54BF\\536E\\51D0\\505D\\4F22\\4AD1\\41DB\\3B95\\3572\\2F3F\\26FD\\25A1\\2477\\208D\\1D0A\\1FB\\A1\\A3\\B4\\2CB\\60\\10C\\E22\\A5\\4E08\\B0\\627\\2500\\5E\\201C\\3C\\B7\\23\\26\\3E\\D\\20\\25EE8\\1F235\\FFD7\\FA10\\F92D\\9E8B\\9C3E\\9AE5\\98EB\\971D\\944A\\92BC\\9143\\8F52\\8DC0\\8B2D\\8973\\87E2\\8655\\84B4\\82E8\\814A\\7F77\\7D57\\7BC8\\7A17\\7851\\768C\\7511\\736C\\7166\\6F58\\6D7C\\6B85\\69DD\\6855\\667E\\64D2\\62CF\\6117\\5F6C\\5D9B\\5BBC\\598B\\57B3\\5616\\543F\\528D\\50DD\\4F57\\4093\\3395\\32B5\\31C8\\3028\\2F14\\25E4\\24D1\\2105\\2227\\A8\\2D9\\2CA\\2467\\B1\\2020\\2466\\251C\\266B\\AF\\4E91\\221E\\2464\\2266\\2207\\4E32\\25B3\\2463\\2010\\2103\\3014\\25C7\\24\\25BD\\4E18\\2460\\21D2\\2015\\2193\\4E03\\7E\\25CB\\2191\\25BC\\3D\\500D\\4E01\\25\\30F6\\2605\\266A\\40\\2B\\4E16\\7C\\A9\\4E\\21\\1F1E9\\FEE3\\F0A7\\9F3D\\9DFA\\9C3B\\9A5F\\98C8\\972A\\95B9\\94E7\\9410\\92B7\\914C\\8FE2\\8E2D\\8CAF\\8B5E\\8A02\\8869\\86E4\\8532\\83B4\\82A9\\814D\\7FFA\\7ED7\\7DC4\\7CCC\\7BC3\\7ACA\\797C\\783E\\770F\\760A\\74EF\\73E7\\72DD\\719C\\7005\\6ED8\\6DC3\\6CB2\\6A01\\68E1\\6792\\663A\\64F8\\63BC\\623B\\60FA\\5FD1\\5EA3\\5D32\\5BF5\\5AB2\\5981\\5831\\570A\\5605\\5519\\53FB\\52A2\\5110\\4FE3\\4EB8\\3127\\279C\\2650\\254B\\23E9\\207B\\1D34\\2AE\\176\\221A\\161\\200B\\300C\\4E4C\\1F921\\FF78\\FA0A\\F78A\\9EB9\\9D34\\9BD3\\9A6F\\9912\\97C6\\964E\\950C\\93E4\\92E5\\91F0\\90BB\\8F68\\8E18\\8B6C\\89F6\\889B\\874C\\8602\\84B1\\8378\\826E\\8113\\7FB1\\7EAF\\7D89\\7C20\\7AFB\\7988\\7840\\7705\\75CC\\749A\\73B3\\727F\\7113\\6FE8\\6ED6\\6DD3\\6CDA\\6BBB\\6A31\\6900\\67D9\\66A7\\655D\\6427\\630D\\61C6\\60AC\\5F78\\5E34\\5CE0\\5B80\\5A51\\590B\\57A1\\566F\\5551\\543D\\52DB\\518F\\5032\\3A17\\305C\\2749\\264A\\2567\\2476\\2139\\1EC0\\11AF\\2C8\\1AF\\E17\\2190\\2022\\2502\\2312\\2025\\50';
  516.  
  517.         user-select: none !important;
  518.         pointer-events: none !important;
  519.     }
  520.  
  521.   `: '';
  522.  
  523.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  524.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  525.         -webkit-backdrop-filter: none;
  526.         backdrop-filter: none;
  527.     }
  528.   `: '';
  529.  
  530.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  531.  
  532.     @keyframes blinker-miuzp {
  533.         0%, 60%, 100% {
  534.             opacity: 1;
  535.         }
  536.         30% {
  537.             opacity: 0.6;
  538.         }
  539.     }
  540.  
  541.     yt-icon-button#show-more.has-new-messages-miuzp {
  542.         animation: blinker-miuzp 1.74s linear infinite;
  543.     }
  544.  
  545.   `: '';
  546.  
  547.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  548.     
  549.     .yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  550.       pointer-events: none !important;
  551.     }
  552.  
  553.   `: '';
  554.  
  555.  
  556.   const addCss = () => `
  557.  
  558.   @property --ticker-rtime {
  559.     syntax: "<percentage>";
  560.     inherits: false;
  561.     initial-value: 0%;
  562.   }
  563.  
  564.   /*
  565.   .run-ticker {
  566.     background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  567.   }
  568.  
  569.   .run-ticker-test {
  570.     background: #00000001;
  571.   }
  572.  
  573.   .run-ticker-forced,
  574.   yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  575.   yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  576.   {
  577.     background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  578.   }
  579.   */
  580.  
  581.   .run-ticker {
  582.     --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  583.   }
  584.  
  585.   .run-ticker,
  586.   yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  587.   yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  588.   {
  589.     background: var(--ticker-bg) !important;
  590.   }
  591.  
  592.   yt-live-chat-ticker-dummy777-item-renderer {
  593.     background: #00000001;
  594.   }
  595.  
  596.   yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  597.     position: fixed !important;
  598.     top: -1000px !important;
  599.     left: -1000px !important;
  600.     font-size: 1px !important;
  601.     color: transparent !important;
  602.     pointer-events: none !important;
  603.     z-index: -1 !important;
  604.     contain: strict !important;
  605.     box-sizing: border-box !important;
  606.     pointer-events: none !important;
  607.     user-select: none !important;
  608.     max-width: 1px !important;
  609.     max-height: 1px !important;
  610.     overflow: hidden !important;
  611.     visibility: collapse !important;
  612.     display: none !important;
  613.   }
  614.  
  615.   yt-live-chat-ticker-dummy777-item-renderer #container {
  616.     background: inherit;
  617.   }
  618.  
  619.  
  620.   ${cssText8_fonts_pre_render}
  621.  
  622.   ${cssText9_no_backdrop_filter_when_menu_shown}
  623.  
  624.   @supports (contain: layout paint style) {
  625.  
  626.     ${cssText5}
  627.  
  628.   }
  629.  
  630.   @supports (color: var(--general)) {
  631.  
  632.     html {
  633.         --yt-live-chat-item-list-renderer-padding: 0px 0px;
  634.     }
  635.  
  636.     ${cssText3_smooth_transform_position}
  637.  
  638.     ${cssText7c_will_change_unset}
  639.  
  640.     ${cssText7b_content_visibility_unset}
  641.  
  642.     yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  643.         overflow-y: scroll;
  644.         padding-right: 0;
  645.     }
  646.  
  647.     ${cssText4_smooth_transform_forced_props}
  648.  
  649.     yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  650.         pointer-events: none !important;
  651.     }
  652.  
  653.     #continuations, #continuations * {
  654.         contain: strict;
  655.         position: fixed;
  656.         top: 2px;
  657.         height: 1px;
  658.         width: 2px;
  659.         height: 1px;
  660.         visibility: collapse;
  661.     }
  662.  
  663.     ${cssText6b_show_more_button}
  664.  
  665.     ${cssText6d_input_panel_border}
  666.  
  667.     ${cssText6c_input_panel_overflow}
  668.  
  669.   }
  670.  
  671.  
  672.   @supports (overflow-anchor: auto) {
  673.  
  674.     .no-anchor * {
  675.         overflow-anchor: none;
  676.     }
  677.     .no-anchor > item-anchor {
  678.         overflow-anchor: auto;
  679.     }
  680.  
  681.     item-anchor {
  682.  
  683.         height:1px;
  684.         width: 100%;
  685.         transform: scaleY(0.00001);
  686.         transform-origin:0 0;
  687.         contain: strict;
  688.         opacity:0;
  689.         display:flex;
  690.         position:relative;
  691.         flex-shrink:0;
  692.         flex-grow:0;
  693.         margin-bottom:0;
  694.         overflow:hidden;
  695.         box-sizing:border-box;
  696.         visibility: visible;
  697.         content-visibility: visible;
  698.         contain-intrinsic-size: auto 1px;
  699.         pointer-events:none !important;
  700.  
  701.     }
  702.  
  703.     #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  704.         overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  705.     }
  706.  
  707.     html item-anchor {
  708.  
  709.         height: 1px;
  710.         width: 1px;
  711.         top: auto;
  712.         left: auto;
  713.         right: auto;
  714.         bottom: auto;
  715.         transform: translateY(-1px);
  716.         position: absolute;
  717.         z-index: -1;
  718.  
  719.     }
  720.  
  721.   }
  722.  
  723.   @supports (color: var(--pre-rendering)) {
  724.  
  725.     @keyframes dontRenderAnimation {
  726.         0% {
  727.             background-position-x: 3px;
  728.         }
  729.         100% {
  730.             background-position-x: 4px;
  731.         }
  732.     }
  733.  
  734.     .dont-render[class] {
  735.         /* visibility: collapse !important; */
  736.         /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://gf.qytechs.cn/scripts/469878/discussions/197267 */
  737.  
  738.         transform: scale(0.01) !important;
  739.         transform: scale(0.00001) !important;
  740.         transform: scale(0.0000001) !important;
  741.         transform-origin: 0 0 !important;
  742.         z-index: -1 !important;
  743.         contain: strict !important;
  744.         box-sizing: border-box !important;
  745.  
  746.         height: 1px !important;
  747.         height: 0.1px !important;
  748.         height: 0.01px !important;
  749.         height: 0.0001px !important;
  750.         height: 0.000001px !important;
  751.  
  752.         animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  753.  
  754.         pointer-events: none !important;
  755.         user-select: none !important;
  756.  
  757.     }
  758.  
  759.     #sk35z {
  760.       display: block !important;
  761.  
  762.       visibility: collapse !important;
  763.  
  764.       transform: scale(0.01) !important;
  765.       transform: scale(0.00001) !important;
  766.       transform: scale(0.0000001) !important;
  767.       transform-origin: 0 0 !important;
  768.       z-index: -1 !important;
  769.       contain: strict !important;
  770.       box-sizing: border-box !important;
  771.  
  772.       height: 1px !important;
  773.       height: 0.1px !important;
  774.       height: 0.01px !important;
  775.       height: 0.0001px !important;
  776.       height: 0.000001px !important;
  777.  
  778.       position: absolute !important;
  779.       top: -1000px !important;
  780.       left: -1000px !important;
  781.  
  782.     }
  783.  
  784.   }
  785.  
  786.   [rNgzQ] {
  787.     opacity: 0 !important;
  788.     pointer-events: none !important;
  789.   }
  790.  
  791.   ${cssText11_entire_message_clickable}
  792.  
  793.   ${cssText10_show_more_blinker}
  794.  
  795.   `;
  796.  
  797.  
  798.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  799.  
  800.   // Create a unique key for the script and check if it is already running
  801.   const hkey_script = 'mchbwnoasqph';
  802.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  803.   win[hkey_script] = true;
  804.  
  805.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  806.  
  807.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  808.     if (te4 < 3) {
  809.       setTimeout(() => { });
  810.       setTimeout(() => { });
  811.     }
  812.  
  813.   }
  814.  
  815.   class Mutex {
  816.  
  817.     constructor() {
  818.       this.p = Promise.resolve()
  819.     }
  820.  
  821.     /**
  822.      *  @param {(lockResolve: () => void)} f
  823.      */
  824.     lockWith(f) {
  825.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  826.     }
  827.  
  828.   }
  829.  
  830.   function dr(s) {
  831.     // reserved for future use
  832.     return s;
  833.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  834.   }
  835.  
  836.   const getProto = (element) => {
  837.     if (element) {
  838.       const cnt = element.inst || element;
  839.       return cnt.constructor.prototype || null;
  840.     }
  841.     return null;
  842.   }
  843.  
  844.   const assertor = (f) => f() || console.assert(false, f + "");
  845.  
  846.   const fnIntegrity = (f, d) => {
  847.     if (!f || typeof f !== 'function') {
  848.       console.warn('f is not a function', f);
  849.       return;
  850.     }
  851.     let p = f + "", s = 0, j = -1, w = 0;
  852.     for (let i = 0, l = p.length; i < l; i++) {
  853.       const t = p[i];
  854.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  855.         if (j < i - 1) w++;
  856.         j = i;
  857.       } else {
  858.         s++;
  859.       }
  860.     }
  861.     let itz = `${f.length}.${s}.${w}`;
  862.     if (!d) {
  863.       return itz;
  864.     } else {
  865.       return itz === d;
  866.     }
  867.   }
  868.  
  869.  
  870.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  871.  
  872.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  873.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  874.   if (!isContainSupport) {
  875.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  876.   } else {
  877.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  878.   }
  879.  
  880.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  881.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  882.   if (!isOverflowAnchorSupport) {
  883.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  884.   } else {
  885.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  886.   }
  887.  
  888.   const NOT_FIREFOX = !CSS.supports('-moz-appearance', 'none'); // 1. Firefox does not have the flicking issue; 2. Firefox's OVERFLOW_ANCHOR is less effective than Chromium's.
  889.  
  890.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  891.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  892.  
  893.   let hasTimerModified = null;
  894.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  895.  
  896.   const fxOperator = (proto, propertyName) => {
  897.     let propertyDescriptorGetter = null;
  898.     try {
  899.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  900.     } catch (e) { }
  901.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  902.       try {
  903.  
  904.         return propertyDescriptorGetter.call(dr(e));
  905.       } catch (e) { }
  906.       return e[propertyName];
  907.     } : (e) => e[propertyName];
  908.   };
  909.  
  910.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  911.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  912.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  913.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  914.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  915.  
  916.   const groupCollapsed = (text1, text2) => {
  917.  
  918.     console.groupCollapsed(`%c${text1}%c${text2}`,
  919.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  920.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  921.     );
  922.   }
  923.  
  924.  
  925.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  926.   const onRegistryReady = (callback) => {
  927.     if (typeof customElements === 'undefined') {
  928.       if (!('__CE_registry' in document)) {
  929.         // https://github.com/webcomponents/polyfills/
  930.         Object.defineProperty(document, '__CE_registry', {
  931.           get() {
  932.             // return undefined
  933.           },
  934.           set(nv) {
  935.             if (typeof nv == 'object') {
  936.               delete this.__CE_registry;
  937.               this.__CE_registry = nv;
  938.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  939.             }
  940.             return true;
  941.           },
  942.           enumerable: false,
  943.           configurable: true
  944.         })
  945.       }
  946.       let eventHandler = (evt) => {
  947.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  948.         const f = callback;
  949.         callback = null;
  950.         eventHandler = null;
  951.         f();
  952.       };
  953.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  954.     } else {
  955.       callback();
  956.     }
  957.   };
  958.  
  959.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  960.  
  961.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  962.  
  963.     return new Promise(resolve => {
  964.  
  965.       let ro = new ResizeObserver(entries => {
  966.         if (entries && entries.length >= 1) {
  967.           resolve();
  968.           ro.disconnect();
  969.           ro = null;
  970.         }
  971.       });
  972.       ro.observe(sizingTarget);
  973.  
  974.  
  975.  
  976.     });
  977.  
  978.   } : (sizingTarget) => {
  979.  
  980.  
  981.     return new Promise(resolve => {
  982.  
  983.       let io = new IntersectionObserver(entries => {
  984.         if (entries && entries.length >= 1) {
  985.           resolve();
  986.           io.disconnect();
  987.           io = null;
  988.         }
  989.       });
  990.       io.observe(sizingTarget);
  991.  
  992.  
  993.  
  994.     });
  995.  
  996.   };
  997.  
  998.   /* globals WeakRef:false */
  999.  
  1000.   /** @type {(o: Object | null) => WeakRef | null} */
  1001.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1002.  
  1003.   /** @type {(wr: Object | null) => Object | null} */
  1004.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1005.  
  1006.   const { addCssManaged } = (() => {
  1007.  
  1008.     const addFontPreRendering = () => {
  1009.  
  1010.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1011.  
  1012.       let efsContainer = document.createElement('elzm-fonts');
  1013.       efsContainer.id = 'elzm-fonts-yk75g'
  1014.  
  1015.       const arr = [];
  1016.       let p = document.createElement('elzm-font');
  1017.       arr.push(p);
  1018.  
  1019.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1020.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1021.  
  1022.           p = document.createElement('elzm-font');
  1023.           p.style.fontWeight = size;
  1024.           arr.push(p);
  1025.         }
  1026.       }
  1027.  
  1028.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1029.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1030.  
  1031.           p = document.createElement('elzm-font');
  1032.           p.style.fontFamily = 'Roboto';
  1033.           p.style.fontWeight = size;
  1034.           arr.push(p);
  1035.         }
  1036.       }
  1037.  
  1038.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1039.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1040.  
  1041.           p = document.createElement('elzm-font');
  1042.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1043.           p.style.fontWeight = size;
  1044.           arr.push(p);
  1045.         }
  1046.       }
  1047.  
  1048.  
  1049.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1050.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1051.  
  1052.           p = document.createElement('elzm-font');
  1053.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1054.           p.style.fontWeight = size;
  1055.           arr.push(p);
  1056.         }
  1057.       }
  1058.  
  1059.  
  1060.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1061.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1062.  
  1063.           p = document.createElement('elzm-font');
  1064.           p.style.fontFamily = 'sans-serif';
  1065.           p.style.fontWeight = size;
  1066.           arr.push(p);
  1067.         }
  1068.       }
  1069.  
  1070.       console.log('number of elzm-font elements', arr.length);
  1071.  
  1072.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1073.  
  1074.       (document.body || document.documentElement).appendChild(efsContainer);
  1075.  
  1076.  
  1077.       console.log('elzm-font elements have been added to the page for rendering.');
  1078.  
  1079.       console.groupEnd();
  1080.  
  1081.     }
  1082.  
  1083.     let isCssAdded = false;
  1084.  
  1085.     function addCssElement() {
  1086.       let s = document.createElement('style');
  1087.       s.id = 'ewRvC';
  1088.       return s;
  1089.     }
  1090.  
  1091.     const addCssManaged = () => {
  1092.       if (!isCssAdded && document.documentElement && document.head) {
  1093.         isCssAdded = true;
  1094.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1095.         if (ENABLE_FONT_PRE_RENDERING) {
  1096.           Promise.resolve().then(addFontPreRendering)
  1097.         }
  1098.       }
  1099.     }
  1100.  
  1101.     return { addCssManaged };
  1102.   })();
  1103.  
  1104.  
  1105.   const { setupStyle } = (() => {
  1106.  
  1107.     const sp7 = Symbol();
  1108.  
  1109.     const proxyHelperFn = (dummy) => ({
  1110.  
  1111.       get(target, prop) {
  1112.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1113.       },
  1114.       set(target, prop, value) {
  1115.         if (!(prop in dummy)) {
  1116.           target[prop] = value;
  1117.         }
  1118.         return true;
  1119.       },
  1120.       has(target, prop) {
  1121.         return (prop in target);
  1122.       },
  1123.       deleteProperty(target, prop) {
  1124.         return true;
  1125.       },
  1126.       ownKeys(target) {
  1127.         return Object.keys(target);
  1128.       },
  1129.       defineProperty(target, key, descriptor) {
  1130.         return Object.defineProperty(target, key, descriptor);
  1131.       },
  1132.       getOwnPropertyDescriptor(target, key) {
  1133.         return Object.getOwnPropertyDescriptor(target, key);
  1134.       },
  1135.  
  1136.     });
  1137.  
  1138.     const setupStyle = (m1, m2) => {
  1139.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1140.  
  1141.       const dummy1v = {
  1142.         transform: '',
  1143.         height: '',
  1144.         minHeight: '',
  1145.         paddingBottom: '',
  1146.         paddingTop: ''
  1147.       };
  1148.  
  1149.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1150.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1151.         dummy1v[k] = dummyStyleFn(k);
  1152.       }
  1153.  
  1154.       const dummy1p = proxyHelperFn(dummy1v);
  1155.       const sp1v = new Proxy(m1.style, dummy1p);
  1156.       const sp2v = new Proxy(m2.style, dummy1p);
  1157.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1158.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1159.       m1.removeAttribute("style");
  1160.       m2.removeAttribute("style");
  1161.  
  1162.     }
  1163.  
  1164.     return { setupStyle };
  1165.  
  1166.   })();
  1167.  
  1168.  
  1169.  
  1170.   function setThumbnails(config) {
  1171.  
  1172.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1173.  
  1174.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1175.  
  1176.  
  1177.       if (thumbnails && thumbnails.length > 0) {
  1178.         if (flag0 > 0 && thumbnails.length > 1) {
  1179.           let pSize = 0;
  1180.           let newThumbnails = [];
  1181.           for (const thumbnail of thumbnails) {
  1182.             if (!thumbnail || !thumbnail.url) continue;
  1183.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1184.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1185.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1186.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1187.               newThumbnails.push(thumbnail);
  1188.               if (imageLinks) imageLinks.add(thumbnail.url);
  1189.             }
  1190.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1191.               pSize = thumbnail.width;
  1192.             }
  1193.           }
  1194.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1195.             baseObject.thumbnails = newThumbnails;
  1196.           } else {
  1197.             newThumbnails.length = 0;
  1198.           }
  1199.           newThumbnails = null;
  1200.         } else {
  1201.           for (const thumbnail of thumbnails) {
  1202.             if (thumbnail && thumbnail.url) {
  1203.               if (imageLinks) imageLinks.add(thumbnail.url);
  1204.             }
  1205.           }
  1206.         }
  1207.       }
  1208.  
  1209.     }
  1210.   }
  1211.  
  1212.   function fixLiveChatItem(item, imageLinks) {
  1213.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1214.     if (liveChatTextMessageRenderer) {
  1215.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1216.       if (messageRuns && messageRuns.length > 0) {
  1217.         for (const run of messageRuns) {
  1218.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1219.           setThumbnails({
  1220.             baseObject: emojiImage,
  1221.             thumbnails: emojiImage.thumbnails,
  1222.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1223.             imageLinks
  1224.           });
  1225.         }
  1226.       }
  1227.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1228.       setThumbnails({
  1229.         baseObject: authorPhoto,
  1230.         thumbnails: authorPhoto.thumbnails,
  1231.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1232.         imageLinks
  1233.       });
  1234.     }
  1235.   }
  1236.  
  1237.  
  1238.   const flagsFnOnInterval = (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) ? (() => {
  1239.  
  1240.     const flags = () => {
  1241.       try {
  1242.         return ytcfg.data_.EXPERIMENT_FLAGS;
  1243.       } catch (e) { }
  1244.       return null;
  1245.     };
  1246.  
  1247.     const flagsForced = () => {
  1248.       try {
  1249.         return ytcfg.data_.EXPERIMENTS_FORCED_FLAGS;
  1250.       } catch (e) { }
  1251.       return null;
  1252.     };
  1253.  
  1254.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1255.  
  1256.       if (!EXPERIMENT_FLAGS) return;
  1257.  
  1258.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1259.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1260.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1261.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1262.         }
  1263.       }
  1264.  
  1265.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1266.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1267.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1268.       }
  1269.  
  1270.     };
  1271.  
  1272.     const uf = (EXPERIMENT_FLAGS) => {
  1273.       if (EXPERIMENT_FLAGS === undefined) EXPERIMENT_FLAGS = flags();
  1274.       if (EXPERIMENT_FLAGS) {
  1275.         flagsFn(EXPERIMENT_FLAGS);
  1276.         flagsFn(flagsForced());
  1277.       }
  1278.     }
  1279.  
  1280.     uf();
  1281.  
  1282.     const flagsFnOnInterval = (setInterval, clearInterval) => {
  1283.  
  1284.       uf();
  1285.       let cidFlags = 0;
  1286.       let kd = 0;
  1287.       new Promise(flagResolve => {
  1288.  
  1289.         const flagTimer = () => {
  1290.           const EXPERIMENT_FLAGS = flags();
  1291.           if (!EXPERIMENT_FLAGS) return;
  1292.           uf(EXPERIMENT_FLAGS);
  1293.           if (kd > 0) return;
  1294.           kd = 1;
  1295.           const delay1000 = new Promise(resolve => setTimeout(resolve, 1000));
  1296.           const moDeferred = new Promise(resolve => {
  1297.             let mo = new MutationObserver(() => {
  1298.               if (mo) {
  1299.                 mo.disconnect();
  1300.                 mo.takeRecords();
  1301.                 mo = null;
  1302.                 resolve();
  1303.               }
  1304.             });
  1305.             mo.observe(document, { subtree: true, childList: true });
  1306.           });
  1307.           Promise.race([delay1000, moDeferred]).then(flagResolve);
  1308.         };
  1309.  
  1310.         uf();
  1311.         cidFlags = setInterval(flagTimer, 1);
  1312.       }).then(() => {
  1313.         if (cidFlags > 0) clearInterval(cidFlags);
  1314.         cidFlags = 0;
  1315.         uf();
  1316.       });
  1317.  
  1318.     }
  1319.  
  1320.     return flagsFnOnInterval;
  1321.  
  1322.   })() : null;
  1323.  
  1324.   let kptPF = null;
  1325.   const emojiPrefetched = new Set();
  1326.   const authorPhotoPrefetched = new Set();
  1327.  
  1328.   function linker(link, rel, href, _as) {
  1329.     return new Promise(resolve => {
  1330.       if (!link) link = document.createElement('link');
  1331.       link.rel = rel;
  1332.       if (_as) link.setAttribute('as', _as);
  1333.       link.onload = function () {
  1334.         resolve({
  1335.           link: this,
  1336.           success: true
  1337.         })
  1338.         this.remove();
  1339.       };
  1340.       link.onerror = function () {
  1341.         resolve({
  1342.           link: this,
  1343.           success: false
  1344.         });
  1345.         this.remove();
  1346.       };
  1347.       link.href = href;
  1348.       document.head.appendChild(link);
  1349.       link = null;
  1350.     });
  1351.   }
  1352.  
  1353.  
  1354.  
  1355.   const cleanContext = async (win) => {
  1356.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1357.     try {
  1358.       let mx = 16; // MAX TRIAL
  1359.       const frameId = 'vanillajs-iframe-v1';
  1360.       /** @type {HTMLIFrameElement | null} */
  1361.       let frame = document.getElementById(frameId);
  1362.       let removeIframeFn = null;
  1363.       if (!frame) {
  1364.         frame = document.createElement('iframe');
  1365.         frame.id = 'vanillajs-iframe-v1';
  1366.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1367.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1368.         n.appendChild(frame);
  1369.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1370.         const root = document.documentElement;
  1371.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1372.         removeIframeFn = (setTimeout) => {
  1373.           const removeIframeOnDocumentReady = (e) => {
  1374.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1375.             win = null;
  1376.             setTimeout(() => {
  1377.               n.remove();
  1378.               n = null;
  1379.             }, 200);
  1380.           }
  1381.           if (document.readyState !== 'loading') {
  1382.             removeIframeOnDocumentReady();
  1383.           } else {
  1384.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1385.           }
  1386.         }
  1387.       }
  1388.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1389.       const fc = frame.contentWindow;
  1390.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1391.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval } = fc;
  1392.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval };
  1393.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1394.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1395.       res.animate = fc.HTMLElement.prototype.animate;
  1396.       jsonParseFix = {
  1397.         _JSON: fc.JSON, _parse: fc.JSON.parse
  1398.       }
  1399.       return res;
  1400.     } catch (e) {
  1401.       console.warn(e);
  1402.       return null;
  1403.     }
  1404.   };
  1405.  
  1406.   cleanContext(win).then(__CONTEXT__ => {
  1407.     if (!__CONTEXT__) return null;
  1408.  
  1409.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate } = __CONTEXT__;
  1410.  
  1411.  
  1412.     let rafPromiseForTickers = null;
  1413.     const getRafPromiseForTickers = () => (rafPromiseForTickers = (rafPromiseForTickers || new Promise(resolve => {
  1414.       requestAnimationFrame(() => {
  1415.         rafPromiseForTickers = null;
  1416.         resolve();
  1417.       });
  1418.     })));
  1419.  
  1420.     let playerState = null;
  1421.  
  1422.     let aeConstructor = null;
  1423.  
  1424.     // << __openedChanged82 >>
  1425.     let currentMenuPivotWR = null;
  1426.  
  1427.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1428.     const beforeParticipantsMap = new WeakMap();
  1429.     // << end >>
  1430.  
  1431.  
  1432.  
  1433.     // << if onRegistryReadyForDOMOperations >>
  1434.  
  1435.     let dt0 = Date.now() - 2000;
  1436.     const dateNow = () => Date.now() - dt0;
  1437.     // let lastScroll = 0;
  1438.     // let lastLShow = 0;
  1439.     let lastWheel = 0;
  1440.     let lastMouseDown = 0;
  1441.     let lastMouseUp = 0;
  1442.     let currentMouseDown = false;
  1443.     let lastTouchDown = 0;
  1444.     let lastTouchUp = 0;
  1445.     let currentTouchDown = false;
  1446.     let lastUserInteraction = 0;
  1447.  
  1448.     let scrollChatFn = null;
  1449.  
  1450.     let skipDontRender = true; // true first; false by flushActiveItems_
  1451.     let allowDontRender = null;
  1452.  
  1453.     // ---- #items mutation ----
  1454.     let sk35zResolveFn = null;
  1455.     let firstList = true;
  1456.  
  1457.     // << end >>
  1458.  
  1459.     class RAFHub {
  1460.       constructor() {
  1461.         /** @type {number} */
  1462.         this.startAt = 8170;
  1463.         /** @type {number} */
  1464.         this.counter = 0;
  1465.         /** @type {number} */
  1466.         this.rid = 0;
  1467.         /** @type {Map<number, FrameRequestCallback>} */
  1468.         this.funcs = new Map();
  1469.         const funcs = this.funcs;
  1470.         /** @type {FrameRequestCallback} */
  1471.         this.bCallback = this.mCallback.bind(this);
  1472.         this.pClear = () => funcs.clear();
  1473.         this.keepRAF = false;
  1474.       }
  1475.       /** @param {DOMHighResTimeStamp} highResTime */
  1476.       mCallback(highResTime) {
  1477.         this.rid = 0;
  1478.         Promise.resolve().then(this.pClear);
  1479.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1480.       }
  1481.       /** @param {FrameRequestCallback} f */
  1482.       request(f) {
  1483.         if (this.counter > 1e9) this.counter = 9;
  1484.         let cid = this.startAt + (++this.counter);
  1485.         this.funcs.set(cid, f);
  1486.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1487.         return cid;
  1488.       }
  1489.       /** @param {number} cid */
  1490.       cancel(cid) {
  1491.         cid = +cid;
  1492.         if (cid > 0) {
  1493.           if (cid <= this.startAt) {
  1494.             return cancelAnimationFrame(cid);
  1495.           }
  1496.           if (this.rid > 0) {
  1497.             this.funcs.delete(cid);
  1498.             if (this.funcs.size === 0 && !this.keepRAF) {
  1499.               cancelAnimationFrame(this.rid);
  1500.               this.rid = 0;
  1501.             }
  1502.           }
  1503.         }
  1504.       }
  1505.     }
  1506.  
  1507.     function basePrefetching() {
  1508.  
  1509.       new Promise(resolve => {
  1510.  
  1511.         if (document.readyState !== 'loading') {
  1512.           resolve();
  1513.         } else {
  1514.           win.addEventListener("DOMContentLoaded", resolve, false);
  1515.         }
  1516.  
  1517.       }).then(() => {
  1518.         const hostL1 = [
  1519.           'https://www.youtube.com', 'https://googlevideo.com',
  1520.           'https://googleapis.com', 'https://accounts.youtube.com',
  1521.           'https://www.gstatic.com', 'https://ggpht.com',
  1522.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1523.         ];
  1524.  
  1525.         const hostL2 = [
  1526.           'https://youtube.com',
  1527.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1528.         ];
  1529.  
  1530.         let link = null;
  1531.  
  1532.         function kn() {
  1533.  
  1534.           link = document.createElement('link');
  1535.           if (link.relList && link.relList.supports) {
  1536.             kptPF = (link.relList.supports('dns-prefetch') ? 1 : 0) + (link.relList.supports('preconnect') ? 2 : 0) + (link.relList.supports('prefetch') ? 4 : 0) + (link.relList.supports('subresource') ? 8 : 0) + (link.relList.supports('preload') ? 16 : 0)
  1537.           } else {
  1538.             kptPF = 0;
  1539.           }
  1540.  
  1541.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1542.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1543.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1544.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1545.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1546.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1547.           console.groupEnd();
  1548.  
  1549.         }
  1550.  
  1551.         for (const h of hostL1) {
  1552.  
  1553.           if (kptPF === null) kn();
  1554.           if (ENABLE_BASE_PREFETCHING) {
  1555.             // if (kptPF & 1) {
  1556.             //   linker(link, 'dns-prefetch', h);
  1557.             //   link = null;
  1558.             // }
  1559.             if (kptPF & 2) {
  1560.               linker(link, 'preconnect', h);
  1561.               link = null;
  1562.             }
  1563.           }
  1564.         }
  1565.  
  1566.         for (const h of hostL2) {
  1567.           if (kptPF === null) kn();
  1568.           if (ENABLE_BASE_PREFETCHING) {
  1569.             if (kptPF & 1) {
  1570.               linker(link, 'dns-prefetch', h);
  1571.               link = null;
  1572.             }
  1573.           }
  1574.         }
  1575.  
  1576.       })
  1577.  
  1578.  
  1579.     }
  1580.  
  1581.     if (flagsFnOnInterval) flagsFnOnInterval(setInterval, clearInterval);
  1582.  
  1583.     if (DO_LINK_PREFETCH) basePrefetching();
  1584.  
  1585.     const { notifyPath7081 } = (() => {
  1586.       // DO_PARTICIPANT_LIST_HACKS
  1587.  
  1588.       const mutexParticipants = new Mutex();
  1589.  
  1590.       let uvid = 0;
  1591.       let r95dm = 0;
  1592.       let c95dm = -1;
  1593.  
  1594.       const foundMap = (base, content) => {
  1595.         /*
  1596.           let lastSearch = 0;
  1597.           let founds = base.map(baseEntry => {
  1598.             let search = content.indexOf(baseEntry, lastSearch);
  1599.             if (search < 0) return false;
  1600.             lastSearch = search + 1;
  1601.             return true;
  1602.           });
  1603.           return founds;
  1604.         */
  1605.         const contentSet = new Set(content);
  1606.         return base.map(baseEntry => contentSet.has(baseEntry));
  1607.  
  1608.       }
  1609.  
  1610.  
  1611.  
  1612.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1613.  
  1614.         const handler1 = {
  1615.           get(target, prop, receiver) {
  1616.             if (prop === 'object') {
  1617.               return participants; // avoid memory leakage
  1618.             }
  1619.             if (prop === 'type') {
  1620.               return 'splice';
  1621.             }
  1622.             return target[prop];
  1623.           }
  1624.         };
  1625.         const releaser = () => {
  1626.           participants = null;
  1627.         }
  1628.  
  1629.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1630.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1631.  
  1632.         let indexSplices = [];
  1633.         let contentUpdates = [];
  1634.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1635.           if (beforeParticipants[i] === participants[j]) {
  1636.             i++; j++;
  1637.           } else if (idsBefore[i] === idsAfter[j]) {
  1638.             // content changed
  1639.             contentUpdates.push({ indexI: i, indexJ: j })
  1640.             i++; j++;
  1641.           } else {
  1642.             let addedCount = 0;
  1643.             for (let q = j; q < foundsForAfter.length; q++) {
  1644.               if (foundsForAfter[q] === false) addedCount++;
  1645.               else break;
  1646.             }
  1647.             let removedCount = 0;
  1648.             for (let q = i; q < foundsForBefore.length; q++) {
  1649.               if (foundsForBefore[q] === false) removedCount++;
  1650.               else break;
  1651.             }
  1652.             if (!addedCount && !removedCount) {
  1653.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1654.             }
  1655.             indexSplices.push(new Proxy({
  1656.               index: j,
  1657.               addedCount: addedCount,
  1658.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1659.             }, handler1));
  1660.             i += removedCount;
  1661.             j += addedCount;
  1662.           }
  1663.         }
  1664.         foundsForBefore = null;
  1665.         foundsForAfter = null;
  1666.         idsBefore = null;
  1667.         idsAfter = null;
  1668.         beforeParticipants = null;
  1669.         return { indexSplices, contentUpdates, releaser };
  1670.  
  1671.       }
  1672.  
  1673.       /*
  1674.  
  1675.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1676.  
  1677.       VM63631:1 Error
  1678.       at customElements.get.notifyPath (<anonymous>:1:122)
  1679.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1680.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1681.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1682.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1683.       at ju (live_chat_polymer.js:1674:217)
  1684.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1685.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1686.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1687.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1688.  
  1689.       */
  1690.  
  1691.       function convertToIds(participants) {
  1692.         return participants.map(participant => {
  1693.           if (!participant || typeof participant !== 'object') {
  1694.             console.warn('Error(0xFA41): convertToIds', participant);
  1695.             return participant; // just in case
  1696.           }
  1697.           let keys = Object.keys(participant);
  1698.           // liveChatTextMessageRenderer
  1699.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1700.           // liveChatPaidMessageRenderer
  1701.           /*
  1702.  
  1703.             'yt-live-chat-participant-renderer' utilizes the following:
  1704.             authorName.simpleText: string
  1705.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1706.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1707.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1708.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1709.  
  1710.           */
  1711.           if (keys.length !== 1) {
  1712.             console.warn('Error(0xFA42): convertToIds', participant);
  1713.             return participant; // just in case
  1714.           }
  1715.           let key = keys[0];
  1716.           let renderer = (participant[key] || 0);
  1717.           let authorName = (renderer.authorName || 0);
  1718.           let text = `${authorName.simpleText || authorName.text}`
  1719.           let res = participant; // fallback if it is not a vaild entry
  1720.           if (typeof text !== 'string') {
  1721.             console.warn('Error(0xFA53): convertToIds', participant);
  1722.           } else {
  1723.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1724.             if (text.length > 1) res = text;
  1725.           }
  1726.           return res;
  1727.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1728.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1729.         });
  1730.       }
  1731.  
  1732.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1733.         // just update when content is changed.
  1734.         if (p1.authorName !== p2.authorName) return true;
  1735.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1736.         if (p1.authorBadges !== p2.authorBadges) return true;
  1737.         return false;
  1738.       } : (p1, p2) => {
  1739.         // keep integrity all the time.
  1740.         return p1 !== p2; // always true
  1741.       }
  1742.  
  1743.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1744.  
  1745.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1746.           if (path !== "participantsManager.participants") {
  1747.             return this.__notifyPath5036__.apply(this, arguments);
  1748.           }
  1749.           if (c95dm === r95dm) return;
  1750.         } else {
  1751.           const stack = new Error().stack;
  1752.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1753.             return this.__notifyPath5036__.apply(this, arguments);
  1754.           }
  1755.         }
  1756.  
  1757.         if (uvid > 1e8) uvid = uvid % 100;
  1758.         let tid = ++uvid;
  1759.  
  1760.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  1761.         mutexParticipants.lockWith(lockResolve => {
  1762.  
  1763.           const participants00 = cnt.participantsManager.participants;
  1764.  
  1765.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1766.             lockResolve();
  1767.             return;
  1768.           }
  1769.  
  1770.           let doUpdate = false;
  1771.  
  1772.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1773.  
  1774.             if (!participants00.r94dm) {
  1775.               participants00.r94dm = 1;
  1776.               if (++r95dm > 1e9) r95dm = 9;
  1777.               participants00.push = function () {
  1778.                 if (++r95dm > 1e9) r95dm = 9;
  1779.                 return Array.prototype.push.apply(this, arguments);
  1780.               }
  1781.               participants00.pop = function () {
  1782.                 if (++r95dm > 1e9) r95dm = 9;
  1783.                 return Array.prototype.pop.apply(this, arguments);
  1784.               }
  1785.               participants00.shift = function () {
  1786.                 if (++r95dm > 1e9) r95dm = 9;
  1787.                 return Array.prototype.shift.apply(this, arguments);
  1788.               }
  1789.               participants00.unshift = function () {
  1790.                 if (++r95dm > 1e9) r95dm = 9;
  1791.                 return Array.prototype.unshift.apply(this, arguments);
  1792.               }
  1793.               participants00.splice = function () {
  1794.                 if (++r95dm > 1e9) r95dm = 9;
  1795.                 return Array.prototype.splice.apply(this, arguments);
  1796.               }
  1797.               participants00.sort = function () {
  1798.                 if (++r95dm > 1e9) r95dm = 9;
  1799.                 return Array.prototype.sort.apply(this, arguments);
  1800.               }
  1801.               participants00.reverse = function () {
  1802.                 if (++r95dm > 1e9) r95dm = 9;
  1803.                 return Array.prototype.reverse.apply(this, arguments);
  1804.               }
  1805.             }
  1806.  
  1807.             if (c95dm !== r95dm) {
  1808.               c95dm = r95dm;
  1809.               doUpdate = true;
  1810.             }
  1811.  
  1812.           } else {
  1813.             doUpdate = true;
  1814.           }
  1815.  
  1816.           if (!doUpdate) {
  1817.             lockResolve();
  1818.             return;
  1819.           }
  1820.  
  1821.           const participants = participants00.slice(0);
  1822.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  1823.           beforeParticipantsMap.set(cnt, participants);
  1824.  
  1825.           const resPromise = (async () => {
  1826.  
  1827.             if (beforeParticipants.length === 0) {
  1828.               // not error
  1829.               return 0;
  1830.             }
  1831.  
  1832.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  1833.  
  1834.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  1835.             if (beforeParticipants.length !== countOfElements) {
  1836.               // there is somewrong for the cache. - sometimes happen
  1837.               return 0;
  1838.             }
  1839.  
  1840.             const idsBefore = convertToIds(beforeParticipants);
  1841.             const idsAfter = convertToIds(participants);
  1842.  
  1843.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  1844.  
  1845.             let res = 1; // default 1 for no update
  1846.  
  1847.             if (indexSplices.length >= 1) {
  1848.  
  1849.  
  1850.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  1851.               // let p1 = indexSplices[0].removed;
  1852.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  1853.  
  1854.               /* folllow
  1855.                   a.notifyPath(c + ".splices", d);
  1856.                   a.notifyPath(c + ".length", b.length);
  1857.               */
  1858.               // stampDomArraySplices_
  1859.  
  1860.  
  1861.               await new Promise(resolve => {
  1862.                 cnt.resolveForDOMRendering781 = resolve;
  1863.  
  1864.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  1865.                   indexSplices
  1866.                 });
  1867.                 indexSplices = null;
  1868.                 releaser();
  1869.                 releaser = null;
  1870.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  1871.                   participants.length
  1872.                 );
  1873.  
  1874.               });
  1875.  
  1876.               await Promise.resolve(0); // play safe for the change of 'length'
  1877.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  1878.  
  1879.               let wrongSize = participants.length !== countOfElements
  1880.               if (wrongSize) {
  1881.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  1882.                 return 0;
  1883.               }
  1884.  
  1885.               res = 2 | 4;
  1886.  
  1887.             } else {
  1888.  
  1889.               indexSplices = null;
  1890.               releaser();
  1891.               releaser = null;
  1892.  
  1893.               if (participants.length !== countOfElements) {
  1894.                 // other unhandled cases
  1895.                 return 0;
  1896.               }
  1897.  
  1898.             }
  1899.  
  1900.             // participants.length === countOfElements before contentUpdates
  1901.             if (contentUpdates.length >= 1) {
  1902.               for (const contentUpdate of contentUpdates) {
  1903.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  1904.                 if (isChanged) {
  1905.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  1906.                   res |= 4 | 8;
  1907.                 }
  1908.               }
  1909.             }
  1910.             contentUpdates = null;
  1911.  
  1912.             return res;
  1913.  
  1914.  
  1915.           })();
  1916.  
  1917.  
  1918.           resPromise.then(resValue => {
  1919.  
  1920.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  1921.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  1922.             if (resValue === 0) {
  1923.               new Promise(resolve => {
  1924.                 cnt.resolveForDOMRendering781 = resolve;
  1925.                 isLogRequired && console.log("Full Refresh begins");
  1926.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  1927.               }).then(() => {
  1928.                 isLogRequired && console.log("Full Refresh ends");
  1929.                 console.groupEnd();
  1930.               }).then(lockResolve);
  1931.               return;
  1932.             }
  1933.  
  1934.             const delayLockResolve = (resValue & 4) === 4;
  1935.  
  1936.             if (delayLockResolve) {
  1937.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  1938.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  1939.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  1940.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  1941.               isLogRequired && console.groupEnd();
  1942.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  1943.               // mutex lock with requestAnimationFrame can also disable participants update in background
  1944.               requestAnimationFrame(lockResolve);
  1945.             } else {
  1946.               lockResolve();
  1947.             }
  1948.  
  1949.           });
  1950.  
  1951.         });
  1952.  
  1953.       }
  1954.  
  1955.       return { notifyPath7081 };
  1956.  
  1957.     })();
  1958.  
  1959.  
  1960.     const onRegistryReadyForDataManipulation = () => {
  1961.  
  1962.       function dummy5035(a, b, c) { }
  1963.       function dummy411(a, b, c) { }
  1964.  
  1965.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  1966.  
  1967.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  1968.  
  1969.         const tag = "yt-live-chat-participant-list-renderer";
  1970.         const cProto = getProto(document.createElement(tag));
  1971.         if (!cProto || typeof cProto.attached !== 'function') {
  1972.           // for _registered, proto.attached shall exist when the element is defined.
  1973.           // for controller extraction, attached shall exist when instance creates.
  1974.           console.warn(`proto.attached for ${tag} is unavailable.`);
  1975.           return;
  1976.         }
  1977.  
  1978.  
  1979.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  1980.  
  1981.         const fgsArr = ['kevlar_tuner_should_test_maintain_stable_list', 'kevlar_should_maintain_stable_list', 'kevlar_tuner_should_test_reuse_components', 'kevlar_tuner_should_reuse_components'];
  1982.         const fgs = {};
  1983.         for (const key of fgsArr) fgs[key] = undefined;
  1984.  
  1985.         try {
  1986.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  1987.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  1988.         } catch (e) { }
  1989.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  1990.  
  1991.         const canDoReplacement = (() => {
  1992.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  1993.             console.warn('YouTube Live Chat Tamer is running.');
  1994.             return;
  1995.           }
  1996.  
  1997.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  1998.             console.warn('YouTube Live Chat Tamer is running.');
  1999.             return;
  2000.           }
  2001.  
  2002.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2003.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2004.  
  2005.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2006.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2007.             return;
  2008.           }
  2009.  
  2010.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2011.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2012.             return;
  2013.           }
  2014.  
  2015.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2016.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2017.             return;
  2018.           }
  2019.           return true;
  2020.         })();
  2021.  
  2022.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2023.  
  2024.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2025.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2026.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2027.           const s = fiRSCB.split('.');
  2028.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2029.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2030.           } else {
  2031.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - Failed`);
  2032.           }
  2033.         } else {
  2034.           console.log("flushRenderStamperComponentBindings_ - not found");
  2035.         }
  2036.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2037.  
  2038.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2039.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2040.           cProto.flushRenderStamperComponentBindings_ = function () {
  2041.             // console.log('flushRenderStamperComponentBindings_')
  2042.             this.flushRenderStamperComponentBindings66_();
  2043.             if (this.resolveForDOMRendering781) {
  2044.               this.resolveForDOMRendering781();
  2045.               this.resolveForDOMRendering781 = null;
  2046.             }
  2047.           };
  2048.         }
  2049.  
  2050.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2051.           const container = ((this || 0).$ || 0).participants;
  2052.           if (!container) return 0;
  2053.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2054.         }
  2055.  
  2056.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2057.  
  2058.         cProto.__attached412__ = cProto.attached;
  2059.         const fpPList = function (hostElement) {
  2060.           const cnt = hostElement.inst || hostElement;
  2061.           if (beforeParticipantsMap.has(cnt)) return;
  2062.           hostElement.classList.add('n9fJ3');
  2063.  
  2064.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2065.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2066.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2067.             return;
  2068.           }
  2069.  
  2070.           groupCollapsed("Participant List attached", "");
  2071.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2072.           //   console.log(123, 'appendChild');
  2073.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2074.           // }
  2075.  
  2076.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2077.           //   console.log(123, 'insertBefore');
  2078.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2079.           // }
  2080.  
  2081.           cnt.__notifyPath5036__ = cnt.notifyPath
  2082.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2083.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2084.           console.log(`initial number of participants: ${participants.length}`);
  2085.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2086.           beforeParticipantsMap.set(cnt, newParticipants);
  2087.           cnt.notifyPath = notifyPath7081;
  2088.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2089.           console.groupEnd();
  2090.         }
  2091.         cProto.attached = function () {
  2092.           fpPList(this.hostElement || this);
  2093.           this.__attached412__.apply(this, arguments);
  2094.         };
  2095.  
  2096.  
  2097.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2098.  
  2099.           /** @type {boolean | (()=>boolean)} */
  2100.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2101.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2102.  
  2103.             let lastMessageDate = 0;
  2104.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2105.  
  2106.             cProto.stampDomArray_ = function (...args) {
  2107.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2108.                 if (typeof toUseMaintainStableList === 'function') {
  2109.                   toUseMaintainStableList = toUseMaintainStableList();
  2110.                 }
  2111.                 args[5] = toUseMaintainStableList;
  2112.                 let currentDate = Date.now();
  2113.                 if (currentDate - lastMessageDate > 440) {
  2114.                   lastMessageDate = currentDate;
  2115.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2116.                 }
  2117.               }
  2118.               return this.stampDomArray66_.apply(this, args);
  2119.             }
  2120.  
  2121.             cProto.stampDomArray_.nIegT = 1;
  2122.  
  2123.           }
  2124.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2125.         } else {
  2126.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2127.         }
  2128.  
  2129.         console.groupEnd();
  2130.  
  2131.         if (onPageElements.length >= 1) {
  2132.           for (const s of onPageElements) {
  2133.             if ((s.inst || s).isAttached === true) {
  2134.               fpPList(s);
  2135.             }
  2136.           }
  2137.         }
  2138.  
  2139.       }).catch(console.warn);
  2140.  
  2141.     };
  2142.  
  2143.     if (DO_PARTICIPANT_LIST_HACKS) {
  2144.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2145.     }
  2146.  
  2147.  
  2148.  
  2149.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2150.  
  2151.  
  2152.  
  2153.  
  2154.     const bnForDelayChatOccurrence = () => {
  2155.  
  2156.       document.addEventListener('animationstart', (evt) => {
  2157.  
  2158.         if (evt.animationName === 'dontRenderAnimation') {
  2159.           evt.target.classList.remove('dont-render');
  2160.           if (scrollChatFn) scrollChatFn();
  2161.         }
  2162.  
  2163.       }, true);
  2164.  
  2165.       const f = (elm) => {
  2166.         if (elm && elm.nodeType === 1) {
  2167.           if (!skipDontRender && allowDontRender === true) {
  2168.             // innerTextFixFn();
  2169.             elm.classList.add('dont-render');
  2170.           }
  2171.         }
  2172.       }
  2173.  
  2174.       Node.prototype.__appendChild931__ = function (a) {
  2175.         a = dr(a);
  2176.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2177.           if (a && a.nodeType === 1) f(a);
  2178.           else if (a instanceof DocumentFragment) {
  2179.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2180.               f(n);
  2181.             }
  2182.           }
  2183.         }
  2184.       }
  2185.  
  2186.       Node.prototype.__appendChild932__ = function () {
  2187.         this.__appendChild931__.apply(this, arguments);
  2188.         return Node.prototype.appendChild.apply(this, arguments);
  2189.       }
  2190.  
  2191.  
  2192.     };
  2193.  
  2194.     const watchUserCSS = () => {
  2195.  
  2196.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2197.  
  2198.       const getElemFromWR = (nr) => {
  2199.         const n = kRef(nr);
  2200.         if (n && n.isConnected) return n;
  2201.         return null;
  2202.       }
  2203.  
  2204.       const clearContentVisibilitySizing = () => {
  2205.         Promise.resolve().then(() => {
  2206.  
  2207.           const e = document.querySelector('#show-more[disabled]');
  2208.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2209.  
  2210.           let lastVisibleItemWR = null;
  2211.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2212.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2213.             elm.setAttribute('wSr93', '');
  2214.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2215.           }
  2216.           requestAnimationFrame(() => {
  2217.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2218.             if (btnShowMore) btnShowMore.click();
  2219.             else {
  2220.               // would not work if switch it frequently
  2221.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2222.               if (lastVisibleItem) {
  2223.  
  2224.                 Promise.resolve()
  2225.                   .then(() => lastVisibleItem.scrollIntoView())
  2226.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2227.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2228.                   .catch(e => { }) // break the chain when method not callable
  2229.  
  2230.               }
  2231.             }
  2232.           });
  2233.  
  2234.         });
  2235.  
  2236.       }
  2237.  
  2238.       const mutObserver = new MutationObserver((mutations) => {
  2239.         for (const mutation of mutations) {
  2240.           if ((mutation.addedNodes || 0).length >= 1) {
  2241.             for (const addedNode of mutation.addedNodes) {
  2242.               if (addedNode.nodeName === 'STYLE') {
  2243.                 clearContentVisibilitySizing();
  2244.                 return;
  2245.               }
  2246.             }
  2247.           }
  2248.           if ((mutation.removedNodes || 0).length >= 1) {
  2249.             for (const removedNode of mutation.removedNodes) {
  2250.               if (removedNode.nodeName === 'STYLE') {
  2251.                 clearContentVisibilitySizing();
  2252.                 return;
  2253.               }
  2254.             }
  2255.           }
  2256.         }
  2257.       });
  2258.  
  2259.       mutObserver.observe(document.documentElement, {
  2260.         childList: true,
  2261.         subtree: false
  2262.       });
  2263.       mutObserver.observe(document.head, {
  2264.         childList: true,
  2265.         subtree: false
  2266.       });
  2267.       mutObserver.observe(document.body, {
  2268.         childList: true,
  2269.         subtree: false
  2270.       });
  2271.  
  2272.     }
  2273.  
  2274.  
  2275.     class WillChangeController {
  2276.       constructor(itemScroller, willChangeValue) {
  2277.         this.element = itemScroller;
  2278.         this.counter = 0;
  2279.         this.active = false;
  2280.         this.willChangeValue = willChangeValue;
  2281.       }
  2282.  
  2283.       beforeOper() {
  2284.         if (!this.active) {
  2285.           this.active = true;
  2286.           this.element.style.willChange = this.willChangeValue;
  2287.         }
  2288.         this.counter++;
  2289.       }
  2290.  
  2291.       afterOper() {
  2292.         const c = this.counter;
  2293.         requestAnimationFrame(() => {
  2294.           if (c === this.counter) {
  2295.             this.active = false;
  2296.             this.element.style.willChange = '';
  2297.           }
  2298.         });
  2299.       }
  2300.  
  2301.       release() {
  2302.         const element = this.element;
  2303.         this.element = null;
  2304.         this.counter = 1e16;
  2305.         this.active = false;
  2306.         try {
  2307.           element.style.willChange = '';
  2308.         } catch (e) { }
  2309.       }
  2310.  
  2311.     }
  2312.  
  2313.  
  2314.     const skzData = (skz) => skz.data = {
  2315.       "message": {
  2316.         "runs": [
  2317.           {
  2318.             "text": "em2o"
  2319.           },
  2320.           {
  2321.             "emoji": {
  2322.               "emojiId": "cm35z",
  2323.               "shortcuts": [
  2324.                 ":_s:",
  2325.                 ":s:"
  2326.               ],
  2327.               "searchTerms": [
  2328.                 "_s",
  2329.                 "s"
  2330.               ],
  2331.               "image": {
  2332.                 "thumbnails": [
  2333.                   {
  2334.                     "url": dummyImgURL,
  2335.                     "width": 48,
  2336.                     "height": 48
  2337.                   }
  2338.                 ],
  2339.                 "accessibility": {
  2340.                   "accessibilityData": {
  2341.                     "label": "s"
  2342.                   }
  2343.                 }
  2344.               },
  2345.               "isCustomEmoji": true
  2346.             }
  2347.           },
  2348.           {
  2349.             "text": "ji"
  2350.           }
  2351.         ]
  2352.       },
  2353.       "authorName": {
  2354.         "simpleText": "N"
  2355.       },
  2356.       "authorPhoto": {
  2357.         "thumbnails": [
  2358.           {
  2359.             "url": dummyImgURL,
  2360.             "width": 64,
  2361.             "height": 64
  2362.           }
  2363.         ]
  2364.       },
  2365.       "contextMenuEndpoint": {
  2366.         "commandMetadata": {
  2367.           "webCommandMetadata": {
  2368.             "ignoreNavigation": true
  2369.           }
  2370.         },
  2371.         "liveChatItemContextMenuEndpoint": {
  2372.           "params": "123=="
  2373.         }
  2374.       },
  2375.       "id": "sk35z",
  2376.       "timestampUsec": "1232302352350000",
  2377.       "authorBadges": [
  2378.         {
  2379.           "liveChatAuthorBadgeRenderer": {
  2380.             "customThumbnail": {
  2381.               "thumbnails": [
  2382.                 {
  2383.                   "url": dummyImgURL,
  2384.                   "width": 16,
  2385.                   "height": 16
  2386.                 },
  2387.                 {
  2388.                   "url": dummyImgURL,
  2389.                   "width": 32,
  2390.                   "height": 32
  2391.                 }
  2392.               ]
  2393.             },
  2394.             "tooltip": "T",
  2395.             "accessibility": {
  2396.               "accessibilityData": {
  2397.                 "label": "E"
  2398.               }
  2399.             }
  2400.           }
  2401.         }
  2402.       ],
  2403.       "authorExternalChannelId": "A",
  2404.       "contextMenuAccessibility": {
  2405.         "accessibilityData": {
  2406.           "label": "E"
  2407.         }
  2408.       },
  2409.       "timestampText": {
  2410.         "simpleText": "0:43"
  2411.       }
  2412.     };
  2413.  
  2414.  
  2415.  
  2416.     const { lcRendererElm, visObserver } = (() => {
  2417.  
  2418.  
  2419.  
  2420.       let lcRendererWR = null;
  2421.  
  2422.       const lcRendererElm = () => {
  2423.         let lcRenderer = kRef(lcRendererWR);
  2424.         if (!lcRenderer || !lcRenderer.isConnected) {
  2425.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2426.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2427.         }
  2428.         return lcRenderer;
  2429.       };
  2430.  
  2431.  
  2432.       let hasFirstShowMore = false;
  2433.  
  2434.       const visObserverFn = (entry) => {
  2435.  
  2436.         const target = entry.target;
  2437.         if (!target) return;
  2438.         // if(target.classList.contains('dont-render')) return;
  2439.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2440.         // const h = entry.boundingClientRect.height;
  2441.         /*
  2442.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2443.             // e.g. under fullscreen. the element created but not rendered.
  2444.             target.setAttribute('wSr93', '');
  2445.             return;
  2446.         }
  2447.         */
  2448.         if (isVisible) {
  2449.           // target.style.setProperty('--wsr94', h + 'px');
  2450.           target.setAttribute('wSr93', 'visible');
  2451.           if (nNextElem(target) === null) {
  2452.  
  2453.             // firstVisibleItemDetected = true;
  2454.             /*
  2455.               if (dateNow() - lastScroll < 80) {
  2456.                   lastLShow = 0;
  2457.                   lastScroll = 0;
  2458.                   Promise.resolve().then(clickShowMore);
  2459.               } else {
  2460.                   lastLShow = dateNow();
  2461.               }
  2462.               */
  2463.             // lastLShow = dateNow();
  2464.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2465.             // implement inside visObserver to ensure there is sufficient delay
  2466.             hasFirstShowMore = true;
  2467.             requestAnimationFrame(() => {
  2468.               // foreground page
  2469.               // page visibly ready -> load the latest comments at initial loading
  2470.               const lcRenderer = lcRendererElm();
  2471.               if (lcRenderer) {
  2472.                 (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2473.               }
  2474.             });
  2475.           }
  2476.         }
  2477.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2478.  
  2479.           // target.style.setProperty('--wsr94', h + 'px');
  2480.           target.setAttribute('wSr93', 'hidden');
  2481.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2482.  
  2483.       }
  2484.  
  2485.  
  2486.  
  2487.       const visObserver = new IntersectionObserver((entries) => {
  2488.  
  2489.         for (const entry of entries) {
  2490.  
  2491.           Promise.resolve(entry).then(visObserverFn);
  2492.  
  2493.         }
  2494.  
  2495.       }, {
  2496.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2497.         rootMargin: "0px",
  2498.         threshold: [0.05, 0.95],
  2499.       });
  2500.  
  2501.  
  2502.       return { lcRendererElm, visObserver }
  2503.  
  2504.  
  2505.     })();
  2506.  
  2507.     const { setupMutObserver } = (() => {
  2508.  
  2509.       const mutFn = (items) => {
  2510.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2511.           if (node.hasAttribute('wSr93')) break;
  2512.           node.setAttribute('wSr93', '');
  2513.           visObserver.observe(node);
  2514.         }
  2515.       }
  2516.  
  2517.       const mutObserver = new MutationObserver((mutations) => {
  2518.         const items = (mutations[0] || 0).target;
  2519.         if (!items) return;
  2520.         if (sk35zResolveFn) {
  2521.           sk35zResolveFn();
  2522.           sk35zResolveFn = null;
  2523.         }
  2524.         mutFn(items);
  2525.       });
  2526.  
  2527.       const setupMutObserver = (m2) => {
  2528.         scrollChatFn = null;
  2529.         mutObserver.disconnect();
  2530.         mutObserver.takeRecords();
  2531.         if (m2) {
  2532.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2533.           if (typeof m2.__appendChild932__ === 'function') {
  2534.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2535.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2536.           }
  2537.           mutObserver.observe(m2, {
  2538.             childList: true,
  2539.             subtree: false
  2540.           });
  2541.           mutFn(m2);
  2542.  
  2543.           const isFirstList = firstList;
  2544.           firstList = false;
  2545.  
  2546.           if (ENABLE_OVERFLOW_ANCHOR) {
  2547.  
  2548.             let items = m2;
  2549.             let addedAnchor = false;
  2550.             if (items) {
  2551.               if (items.nextElementSibling === null) {
  2552.                 items.classList.add('no-anchor');
  2553.                 addedAnchor = true;
  2554.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2555.               }
  2556.             }
  2557.  
  2558.  
  2559.  
  2560.             if (addedAnchor) {
  2561.               nodeParent(m2).classList.add('no-anchor'); // required
  2562.             }
  2563.  
  2564.           }
  2565.  
  2566.           // let div = document.createElement('div');
  2567.           // div.id = 'qwcc';
  2568.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2569.           // bufferRegion =div;
  2570.  
  2571.           // buffObserver.takeRecords();
  2572.           // buffObserver.disconnect();
  2573.           // buffObserver.observe(div,  {
  2574.           //     childList: true,
  2575.           //     subtree: false
  2576.           // })
  2577.  
  2578.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2579.  
  2580.             promiseForCustomYtElementsReady.then(() => {
  2581.  
  2582.               customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2583.  
  2584.  
  2585.  
  2586.  
  2587.                 setTimeout(() => {
  2588.  
  2589.                   /** @type {HTMLTemplateElement} */
  2590.                   let skz = document.createElement('yt-live-chat-text-message-renderer');
  2591.  
  2592.                   let cz1 = null;
  2593.  
  2594.                   if (skz && 'data' in skz && 'attached' in skz) {
  2595.  
  2596.                     const deferredZy1 = new Promise(resolve => {
  2597.  
  2598.                       skz.attached = function () {
  2599.                         cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2600.                         resolve(skz.textContent);
  2601.                       }
  2602.                       skz.detached = function () {
  2603.  
  2604.                       }
  2605.  
  2606.                     });
  2607.                     skz.id = 'sk35z';
  2608.                     skzData(skz);
  2609.  
  2610.  
  2611.                     sk35zResolveFn = null;
  2612.                     const deferredMutation = new Promise(resolve => {
  2613.                       sk35zResolveFn = resolve;
  2614.                       HTMLElement.prototype.appendChild.call(m2, skz);
  2615.                     });
  2616.  
  2617.                     Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2618.                       const [zy1, _] = res;
  2619.                       function fn() {
  2620.                         const zy2 = skz.textContent;
  2621.                         const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2622.                         if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2623.                           allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2624.                         }
  2625.                         if (allowDontRender === false) {
  2626.  
  2627.                           console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2628.                             "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2629.                             "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2630.                           );
  2631.  
  2632.                           console.warn(`%cWarning:\n\tYou might have added a userscript or extension that stops YouTube Super Fast Chat's quick loading.\n\tTo figure out which one affects the script, turn them off one by one and let the author know.`, 'color: #bada55');
  2633.  
  2634.                           console.groupEnd();
  2635.                         } else if (allowDontRender === true) {
  2636.                           return true;
  2637.                         }
  2638.                       }
  2639.                       await new Promise(r => setTimeout(r, 1));
  2640.                       if (fn()) {
  2641.                         await new Promise(r => requestAnimationFrame(r));
  2642.                         if (fn()) {
  2643.                           skz.remove();
  2644.                           skz.textContent = '';
  2645.                           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2646.                         }
  2647.                       }
  2648.                     });
  2649.  
  2650.                   }
  2651.  
  2652.                 }, 1);
  2653.  
  2654.               }).catch(console.warn);
  2655.  
  2656.             })
  2657.  
  2658.           }
  2659.  
  2660.  
  2661.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2662.  
  2663.             (() => {
  2664.  
  2665.               const tag = 'yt-iframed-player-events-relay'
  2666.               const dummy = document.createElement(tag);
  2667.  
  2668.               const cProto = getProto(dummy);
  2669.               if (!cProto || !cProto.handlePostMessage_) {
  2670.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2671.                 return;
  2672.               }
  2673.  
  2674.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2675.  
  2676.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2677.  
  2678.                 cProto.handlePostMessage_ = function (a) {
  2679.  
  2680.                   const da = (a || 0).data || 0;
  2681.                   if (typeof da === 'object') {
  2682.  
  2683.                     // console.log('handlePostMessage_', da)
  2684.                     const qc = da['yt-player-state-change'];
  2685.                     if (qc === 2) { playerState = 2 }
  2686.                     else if (qc === 3) { playerState = 3 }
  2687.                     else if (qc === 1) { playerState = 1 }
  2688.                     console.log(qc)
  2689.                     return this.handlePostMessage66_(a);
  2690.  
  2691.                   }
  2692.  
  2693.  
  2694.                 }
  2695.  
  2696.               }
  2697.  
  2698.  
  2699.             })();
  2700.  
  2701.           }
  2702.  
  2703.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  2704.             setTimeout(() => {
  2705.               if (!hasTimerModified) return;
  2706.               const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  2707.               if (!tickerRenderer) return;
  2708.  
  2709.               const items = (tickerRenderer.$ || 0).items || 0;
  2710.               if (!items) return;
  2711.               const template = document.createElement('template');
  2712.               template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  2713.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  2714.                 dimmed="" [dummy777]>
  2715.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  2716.                   style="--background:linear-gradient(90deg, rgba(1,2,3,1),rgba(1,2,3,1) 7%,rgba(4,0,0,1) 7%,rgba(4,0,0,1));">
  2717.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  2718.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  2719.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  2720.                       style="background-color: transparent;" loaded=""><img id="img"
  2721.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  2722.                         src="${dummyImgURL}"></yt-img-shadow777>
  2723.  
  2724.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  2725.                   </div>
  2726.                 </div>
  2727.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  2728.               const dummy777 = template.content.firstElementChild;
  2729.               items.appendChild(dummy777);
  2730.               Promise.resolve(dummy777).then((dummy777) => {
  2731.                 let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  2732.                 if (container.isConnected === true) {
  2733.  
  2734.                   const evaluated = `${window.getComputedStyle(container).background}`;
  2735.  
  2736.                   container = null;
  2737.                   dummy777.remove();
  2738.                   dummy777.textContent = '';
  2739.                   dummy777 = null;
  2740.  
  2741.                   if (evaluated.indexOf('0.') < 4) {
  2742.  
  2743.                     // not fulfilling
  2744.                     // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  2745.  
  2746.                     console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2747.                       "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2748.                       "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2749.                     );
  2750.                     console.warn(`%cWarning:\n\tYou might have added a userscript or extension that also modifies the ticker background.\n\tYouTube Super Fast Chat is taking over.`, 'color: #bada55');
  2751.                     console.groupEnd();
  2752.  
  2753.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  2754.  
  2755.                   } else {
  2756.  
  2757.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2758.                   }
  2759.                 }
  2760.               });
  2761.  
  2762.             }, 800);
  2763.           }
  2764.  
  2765.         }
  2766.       }
  2767.  
  2768.       return { setupMutObserver };
  2769.  
  2770.  
  2771.  
  2772.     })();
  2773.  
  2774.     const setupEvents = () => {
  2775.  
  2776.  
  2777.       let scrollCount = 0;
  2778.  
  2779.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  2780.  
  2781.  
  2782.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  2783.  
  2784.         const lcRenderer = lcRendererElm();
  2785.         if (lcRenderer) {
  2786.           const cnt = (lcRenderer.inst || lcRenderer);
  2787.           if (!cnt.hasUserJustInteracted11_) return;
  2788.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  2789.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  2790.           }
  2791.         }
  2792.  
  2793.       }
  2794.  
  2795.       document.addEventListener('scroll', (evt) => {
  2796.         if (!evt || !evt.isTrusted) return;
  2797.         // lastScroll = dateNow();
  2798.         if (++scrollCount > 1e9) scrollCount = 9;
  2799.       }, passiveCapture); // support contain => support passive
  2800.  
  2801.       let lastScrollCount = -1;
  2802.       document.addEventListener('wheel', (evt) => {
  2803.         if (!evt || !evt.isTrusted) return;
  2804.         if (lastScrollCount === scrollCount) return;
  2805.         lastScrollCount = scrollCount;
  2806.         lastWheel = dateNow();
  2807.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2808.       }, passiveCapture); // support contain => support passive
  2809.  
  2810.       document.addEventListener('mousedown', (evt) => {
  2811.         if (!evt || !evt.isTrusted) return;
  2812.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2813.         lastMouseDown = dateNow();
  2814.         currentMouseDown = true;
  2815.         lastUserInteraction = lastMouseDown;
  2816.       }, passiveCapture);
  2817.  
  2818.       document.addEventListener('pointerdown', (evt) => {
  2819.         if (!evt || !evt.isTrusted) return;
  2820.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2821.         lastMouseDown = dateNow();
  2822.         currentMouseDown = true;
  2823.         lastUserInteraction = lastMouseDown;
  2824.       }, passiveCapture);
  2825.  
  2826.       document.addEventListener('click', (evt) => {
  2827.         if (!evt || !evt.isTrusted) return;
  2828.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2829.         lastMouseDown = lastMouseUp = dateNow();
  2830.         currentMouseDown = false;
  2831.         lastUserInteraction = lastMouseDown;
  2832.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2833.       }, passiveCapture);
  2834.  
  2835.       document.addEventListener('tap', (evt) => {
  2836.         if (!evt || !evt.isTrusted) return;
  2837.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2838.         lastMouseDown = lastMouseUp = dateNow();
  2839.         currentMouseDown = false;
  2840.         lastUserInteraction = lastMouseDown;
  2841.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2842.       }, passiveCapture);
  2843.  
  2844.  
  2845.       document.addEventListener('mouseup', (evt) => {
  2846.         if (!evt || !evt.isTrusted) return;
  2847.         if (currentMouseDown) {
  2848.           lastMouseUp = dateNow();
  2849.           currentMouseDown = false;
  2850.           lastUserInteraction = lastMouseUp;
  2851.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2852.         }
  2853.       }, passiveCapture);
  2854.  
  2855.  
  2856.       document.addEventListener('pointerup', (evt) => {
  2857.         if (!evt || !evt.isTrusted) return;
  2858.         if (currentMouseDown) {
  2859.           lastMouseUp = dateNow();
  2860.           currentMouseDown = false;
  2861.           lastUserInteraction = lastMouseUp;
  2862.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2863.         }
  2864.       }, passiveCapture);
  2865.  
  2866.       document.addEventListener('touchstart', (evt) => {
  2867.         if (!evt || !evt.isTrusted) return;
  2868.         lastTouchDown = dateNow();
  2869.         currentTouchDown = true;
  2870.         lastUserInteraction = lastTouchDown;
  2871.       }, passiveCapture);
  2872.  
  2873.       document.addEventListener('touchmove', (evt) => {
  2874.         if (!evt || !evt.isTrusted) return;
  2875.         lastTouchDown = dateNow();
  2876.         currentTouchDown = true;
  2877.         lastUserInteraction = lastTouchDown;
  2878.       }, passiveCapture);
  2879.  
  2880.       document.addEventListener('touchend', (evt) => {
  2881.         if (!evt || !evt.isTrusted) return;
  2882.         if (currentTouchDown) {
  2883.           lastTouchUp = dateNow();
  2884.           currentTouchDown = false;
  2885.           lastUserInteraction = lastTouchUp;
  2886.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2887.         }
  2888.       }, passiveCapture);
  2889.  
  2890.       document.addEventListener('touchcancel', (evt) => {
  2891.         if (!evt || !evt.isTrusted) return;
  2892.         if (currentTouchDown) {
  2893.           lastTouchUp = dateNow();
  2894.           currentTouchDown = false;
  2895.           lastUserInteraction = lastTouchUp;
  2896.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2897.         }
  2898.       }, passiveCapture);
  2899.  
  2900.  
  2901.     }
  2902.  
  2903.  
  2904.     const onRegistryReadyForDOMOperations = () => {
  2905.  
  2906.       let firstCheckedOnYtInit = false;
  2907.  
  2908.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  2909.  
  2910.       const mightFirstCheckOnYtInit = () => {
  2911.         if (firstCheckedOnYtInit) return;
  2912.         firstCheckedOnYtInit = true;
  2913.  
  2914.         if (!document.body || !document.head) return;
  2915.         if (!assertorURL()) return;
  2916.  
  2917.         addCssManaged();
  2918.  
  2919.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  2920.         if (efsContainer && efsContainer.parentNode !== document.body) {
  2921.           document.body.appendChild(efsContainer);
  2922.         }
  2923.  
  2924.       };
  2925.  
  2926.       if (!assertorURL()) return;
  2927.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  2928.  
  2929.       if (document.documentElement && document.head) {
  2930.         addCssManaged();
  2931.       }
  2932.       // console.log(document.body===null)
  2933.  
  2934.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  2935.  
  2936.         const tag = "yt-live-chat-item-list-renderer"
  2937.         const dummy = document.createElement(tag);
  2938.  
  2939.         const cProto = getProto(dummy);
  2940.         if (!cProto || !cProto.attached) {
  2941.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2942.           return;
  2943.         }
  2944.  
  2945.         mightFirstCheckOnYtInit();
  2946.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  2947.         console.log("[Begin]");
  2948.  
  2949.         const mclp = cProto;
  2950.         try {
  2951.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  2952.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  2953.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  2954.           assertor(() => typeof mclp.setAtBottom === 'function');
  2955.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  2956.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  2957.         } catch (e) { }
  2958.  
  2959.  
  2960.         try {
  2961.           assertor(() => typeof mclp.attached === 'function');
  2962.           assertor(() => typeof mclp.detached === 'function');
  2963.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  2964.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  2965.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  2966.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  2967.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  2968.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  2969.         } catch (e) { }
  2970.  
  2971.         mclp.__intermediate_delay__ = null;
  2972.  
  2973.         let mzk = 0;
  2974.         let myk = 0;
  2975.         let mlf = 0;
  2976.         let myw = 0;
  2977.         let mzt = 0;
  2978.         let zarr = null;
  2979.         let mlg = 0;
  2980.  
  2981.         if ((mclp.clearList || 0).length === 0) {
  2982.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  2983.           mclp.clearList66 = mclp.clearList;
  2984.           mclp.clearList = function () {
  2985.             mzk++;
  2986.             myk++;
  2987.             mlf++;
  2988.             myw++;
  2989.             mzt++;
  2990.             mlg++;
  2991.             zarr = null;
  2992.             this.__intermediate_delay__ = null;
  2993.             this.clearList66();
  2994.           };
  2995.           console.log("clearList", "OK");
  2996.         } else {
  2997.           console.log("clearList", "NG");
  2998.         }
  2999.  
  3000.  
  3001.         let onListRendererAttachedDone = false;
  3002.  
  3003.         function setList(itemOffset, items) {
  3004.  
  3005.           const isFirstTime = onListRendererAttachedDone === false;
  3006.  
  3007.           if (isFirstTime) {
  3008.             onListRendererAttachedDone = true;
  3009.             Promise.resolve().then(watchUserCSS);
  3010.             addCssManaged();
  3011.             setupEvents();
  3012.           }
  3013.  
  3014.           setupStyle(itemOffset, items);
  3015.  
  3016.           setupMutObserver(items);
  3017.         }
  3018.  
  3019.         mclp.attached419 = async function () {
  3020.  
  3021.           if (!this.isAttached) return;
  3022.  
  3023.           let maxTrial = 16;
  3024.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3025.             if (--maxTrial < 0 || !this.isAttached) return;
  3026.             await new Promise(requestAnimationFrame);
  3027.           }
  3028.  
  3029.           if (this.isAttached !== true) return;
  3030.  
  3031.           if (!this.$) {
  3032.             console.warn("!this.$");
  3033.             return;
  3034.           }
  3035.           if (!this.$) return;
  3036.           /** @type {HTMLElement | null} */
  3037.           const itemScroller = this.$['item-scroller'];
  3038.           /** @type {HTMLElement | null} */
  3039.           const itemOffset = this.$['item-offset'];
  3040.           /** @type {HTMLElement | null} */
  3041.           const items = this.$['items'];
  3042.  
  3043.           if (!itemScroller || !itemOffset || !items) {
  3044.             console.warn("items.parentNode !== itemOffset");
  3045.             return;
  3046.           }
  3047.  
  3048.           if (nodeParent(items) !== itemOffset) {
  3049.  
  3050.             console.warn("items.parentNode !== itemOffset");
  3051.             return;
  3052.           }
  3053.  
  3054.  
  3055.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3056.  
  3057.             console.warn("id incorrect");
  3058.             return;
  3059.           }
  3060.  
  3061.           const isTargetItems = HTMLElement.prototype.matches.call(items, '#item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer')
  3062.  
  3063.           if (!isTargetItems) {
  3064.             console.warn("!isTargetItems");
  3065.             return;
  3066.           }
  3067.  
  3068.           setList(itemOffset, items);
  3069.  
  3070.         }
  3071.  
  3072.         mclp.attached331 = mclp.attached;
  3073.         mclp.attached = function () {
  3074.           this.attached419 && this.attached419();
  3075.           return this.attached331();
  3076.         }
  3077.  
  3078.         mclp.detached331 = mclp.detached;
  3079.  
  3080.         mclp.detached = function () {
  3081.           setupMutObserver();
  3082.           return this.detached331();
  3083.         }
  3084.  
  3085.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3086.         for (const t29 of t29s) {
  3087.           if ((t29.inst || t29).isAttached === true) {
  3088.             t29.attached419();
  3089.           }
  3090.         }
  3091.  
  3092.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3093.  
  3094.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3095.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3096.  
  3097.           /** @type {Map<number, any>} */
  3098.           const aMap = new Map();
  3099.           let count = 6150;
  3100.           mclp.async66 = mclp.async;
  3101.           mclp.async = function (e, f) {
  3102.             // ensure the previous operation is done
  3103.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3104.             const hasF = arguments.length === 2;
  3105.             const stack = new Error().stack;
  3106.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3107.             if (count > 1e9) count = 6159;
  3108.             const resId = ++count;
  3109.             aMap.set(resId, e);
  3110.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3111.               const rp = aMap.get(resId);
  3112.               if (typeof rp !== 'function') {
  3113.                 return;
  3114.               }
  3115.               let cancelCall = false;
  3116.               if (isFlushAsync) {
  3117.                 if (rk < 0) {
  3118.                   cancelCall = true;
  3119.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3120.                   cancelCall = true;
  3121.                 }
  3122.               }
  3123.               if (cancelCall) {
  3124.                 aMap.delete(resId);
  3125.               } else {
  3126.                 const asyncEn = function () {
  3127.                   aMap.delete(resId);
  3128.                   return rp.apply(this, arguments);
  3129.                 };
  3130.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3131.               }
  3132.             });
  3133.  
  3134.             return resId;
  3135.           }
  3136.  
  3137.           mclp.cancelAsync66 = mclp.cancelAsync;
  3138.           mclp.cancelAsync = function (resId) {
  3139.             if (resId <= 6150) {
  3140.               this.cancelAsync66(resId);
  3141.             } else if (aMap.has(resId)) {
  3142.               const rp = aMap.get(resId);
  3143.               aMap.delete(resId);
  3144.               if (typeof rp !== 'function') {
  3145.                 this.cancelAsync66(rp);
  3146.               }
  3147.             }
  3148.           }
  3149.  
  3150.           console.log("async", "OK");
  3151.         } else {
  3152.           console.log("async", "NG");
  3153.         }
  3154.  
  3155.  
  3156.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3157.  
  3158.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3159.           mclp.showNewItems66_ = mclp.showNewItems_;
  3160.  
  3161.           mclp.showNewItems77_ = async function () {
  3162.             if (myk > 1e9) myk = 9;
  3163.             let tid = ++myk;
  3164.  
  3165.             await new Promise(requestAnimationFrame);
  3166.  
  3167.             if (tid !== myk) {
  3168.               return;
  3169.             }
  3170.  
  3171.             const cnt = this;
  3172.  
  3173.             await Promise.resolve();
  3174.             cnt.showNewItems66_();
  3175.  
  3176.             await Promise.resolve();
  3177.  
  3178.           }
  3179.  
  3180.           mclp.showNewItems_ = function () {
  3181.  
  3182.             const cnt = this;
  3183.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3184.               cnt.showNewItems77_().then(() => {
  3185.                 resolve();
  3186.               });
  3187.             });
  3188.           }
  3189.  
  3190.           console.log("showNewItems_", "OK");
  3191.         } else {
  3192.           console.log("showNewItems_", "NG");
  3193.         }
  3194.  
  3195.  
  3196.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3197.  
  3198.           assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3199.  
  3200.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3201.  
  3202.           let contensWillChangeController = null;
  3203.  
  3204.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3205.  
  3206.           mclp.flushActiveItems78_ = async function (tid) {
  3207.             try {
  3208.               if (tid !== mlf) return;
  3209.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3210.               let logger = false;
  3211.               const cnt = this;
  3212.               let immd = cnt.__intermediate_delay__;
  3213.               await new Promise(requestAnimationFrame);
  3214.  
  3215.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3216.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3217.  
  3218.               mlf++;
  3219.               if (mlg > 1e9) mlg = 9;
  3220.               ++mlg;
  3221.  
  3222.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3223.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3224.               let changeMaxItemsToDisplay = false;
  3225.               const activeItemsLen = this.activeItems_.length;
  3226.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3227.                 logger = true;
  3228.  
  3229.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3230.  
  3231.                 logger && console.log('[Begin]')
  3232.  
  3233.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3234.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3235.                   console.log('reduce maxitems');
  3236.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3237.                     // as all the rendered chats are already "outdated"
  3238.                     // all old chats shall remove and reduced number of few chats will be rendered
  3239.                     // then restore to the original number
  3240.                     changeMaxItemsToDisplay = true;
  3241.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3242.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3243.                   }
  3244.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3245.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3246.  
  3247.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3248.                 } else {
  3249.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3250.  
  3251.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3252.                 }
  3253.               }
  3254.               // it is found that it will render all stacked chats after switching back from background
  3255.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3256.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3257.  
  3258.  
  3259.               const items = (cnt.$ || 0).items;
  3260.  
  3261.               if (USE_WILL_CHANGE_CONTROLLER) {
  3262.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3263.                   contensWillChangeController.release();
  3264.                   contensWillChangeController = null;
  3265.                 }
  3266.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3267.               }
  3268.               const wcController = contensWillChangeController;
  3269.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3270.               wcController && wcController.beforeOper();
  3271.               await Promise.resolve();
  3272.               const acItems = cnt.activeItems_;
  3273.               const len1 = acItems.length;
  3274.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3275.               let waitFor = [];
  3276.  
  3277.  
  3278.               /** @type {Set<string>} */
  3279.               const imageLinks = new Set();
  3280.  
  3281.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3282.                 for (const item of acItems) {
  3283.                   fixLiveChatItem(item, imageLinks);
  3284.                 }
  3285.               }
  3286.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3287.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3288.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3289.  
  3290.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3291.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3292.                 // preload performs the high priority fetching.
  3293.                 // prefetch delays the chat display if the video resoruce is demanding.
  3294.  
  3295.                 if (rel) {
  3296.  
  3297.                   imageLinks.forEach(imageLink => {
  3298.                     let d = false;
  3299.                     const isEmoji = imageLink.includes('/emoji/');
  3300.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3301.                     if (!pretechedSet.has(imageLink)) {
  3302.                       pretechedSet.add(imageLink);
  3303.                       d = true;
  3304.                     }
  3305.                     if (d) {
  3306.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3307.  
  3308.                     }
  3309.                   })
  3310.  
  3311.                 }
  3312.  
  3313.               }
  3314.  
  3315.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3316.               // console.log('ss1', Date.now())
  3317.               if (waitFor.length > 0) {
  3318.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3319.               }
  3320.               waitFor.length = 0;
  3321.               waitFor = null;
  3322.               // console.log('ss2', Date.now())
  3323.               cnt.flushActiveItems66_();
  3324.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3325.               const len2 = cnt.activeItems_.length;
  3326.               const bAsync = len1 !== len2;
  3327.               await Promise.resolve();
  3328.               if (wcController) {
  3329.                 if (bAsync) {
  3330.                   cnt.async(() => {
  3331.                     wcController.afterOper();
  3332.                   });
  3333.                 } else {
  3334.                   wcController.afterOper();
  3335.                 }
  3336.               }
  3337.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3338.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3339.  
  3340.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3341.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3342.               } else if (changeMaxItemsToDisplay) {
  3343.  
  3344.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3345.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  3346.                   reducedMaxItemsToDisplay,
  3347.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  3348.                 });
  3349.               }
  3350.               logger && console.log('[End]')
  3351.  
  3352.               logger && console.groupEnd();
  3353.  
  3354.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3355.  
  3356.  
  3357.                 const ff = () => {
  3358.  
  3359.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3360.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3361.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3362.                     cnt.scrollToBottom_();
  3363.  
  3364.                     Promise.resolve().then(() => {
  3365.  
  3366.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3367.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3368.                     });
  3369.  
  3370.  
  3371.                   }
  3372.                 }
  3373.  
  3374.                 ff();
  3375.  
  3376.  
  3377.                 Promise.resolve().then(ff);
  3378.  
  3379.                 // requestAnimationFrame(ff);
  3380.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  3381.  
  3382.                 const knt = cnt;
  3383.                 if (!scrollChatFn) {
  3384.                   const cnt = knt;
  3385.                   const f = () => {
  3386.                     const itemScroller = cnt.itemScroller;
  3387.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  3388.                     if (!cnt.atBottom) {
  3389.                       cnt.scrollToBottom_();
  3390.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  3391.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  3392.                     }
  3393.                   };
  3394.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  3395.                 }
  3396.  
  3397.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  3398.               }
  3399.  
  3400.               return 1;
  3401.  
  3402.  
  3403.             } catch (e) {
  3404.               console.warn(e);
  3405.             }
  3406.           }
  3407.  
  3408.           mclp.flushActiveItems77_ = function () {
  3409.  
  3410.             return new Promise(resResolve => {
  3411.               try {
  3412.                 const cnt = this;
  3413.                 if (mlf > 1e9) mlf = 9;
  3414.                 let tid = ++mlf;
  3415.                 const hostElement = cnt.hostElement || cnt;
  3416.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  3417.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  3418.  
  3419.                 // 4 times to maxItems to avoid frequent trimming.
  3420.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  3421.  
  3422.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3423.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  3424.                 if (cnt.canScrollToBottom_()) {
  3425.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  3426.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  3427.                     .then((asyncResult) => {
  3428.                       resResolve(asyncResult); // either undefined or 1
  3429.                       resResolve = null;
  3430.                     }).catch((e) => {
  3431.                       console.warn(e);
  3432.                       if (resResolve) resResolve();
  3433.                     });
  3434.                 } else {
  3435.                   resResolve(2);
  3436.                   resResolve = null;
  3437.                 }
  3438.               } catch (e) {
  3439.                 console.warn(e);
  3440.                 if (resResolve) resResolve();
  3441.               }
  3442.  
  3443.  
  3444.             });
  3445.  
  3446.           }
  3447.  
  3448.           mclp.flushActiveItems_ = function () {
  3449.             const cnt = this;
  3450.  
  3451.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  3452.  
  3453.             if (cnt.activeItems_.length === 0) {
  3454.               cnt.__intermediate_delay__ = null;
  3455.               return;
  3456.             }
  3457.  
  3458.             const cntData = ((cnt || 0).data || 0);
  3459.             if (cntData.maxItemsToDisplay944 === undefined) {
  3460.               cntData.maxItemsToDisplay944 = null;
  3461.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  3462.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  3463.             }
  3464.  
  3465.             // ignore previous __intermediate_delay__ and create a new one
  3466.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3467.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  3468.                 if (rt === 1) {
  3469.                   resolve(1); // success, scroll to bottom
  3470.                   if (hasMoreMessageState === 1) {
  3471.                     hasMoreMessageState = 0;
  3472.                     const showMore = (cnt.$ || 0)['show-more'];
  3473.                     if (showMore) {
  3474.                       showMore.classList.remove('has-new-messages-miuzp');
  3475.                     }
  3476.                   }
  3477.                 }
  3478.                 else if (rt === 2) {
  3479.                   resolve(2); // success, trim
  3480.                   if (hasMoreMessageState === 0) {
  3481.                     hasMoreMessageState = 1;
  3482.                     const showMore = cnt.$['show-more'];
  3483.                     if (showMore) {
  3484.                       showMore.classList.add('has-new-messages-miuzp');
  3485.                     }
  3486.                   }
  3487.                 }
  3488.                 else resolve(-1); // skip
  3489.               }).catch(e => {
  3490.                 console.warn(e);
  3491.               });
  3492.             });
  3493.  
  3494.           }
  3495.           console.log("flushActiveItems_", "OK");
  3496.         } else {
  3497.           console.log("flushActiveItems_", "NG");
  3498.         }
  3499.  
  3500.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  3501.           try {
  3502.             if (mlg > 1e9) mlg = 9;
  3503.             const tid = ++mlg;
  3504.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  3505.             const runCond = () => this.canScrollToBottom_();
  3506.             if (!keepTrialCond()) return;
  3507.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  3508.             await new Promise(r => setTimeout(r, 80));
  3509.             if (!keepTrialCond()) return;
  3510.             if (runCond()) return this.flushActiveItems_() | 1;
  3511.             await new Promise(requestAnimationFrame);
  3512.             if (runCond()) return this.flushActiveItems_() | 1;
  3513.           } catch (e) {
  3514.             console.warn(e);
  3515.           }
  3516.         }
  3517.  
  3518.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  3519.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  3520.           assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  3521.  
  3522.           const querySelector = HTMLElement.prototype.querySelector;
  3523.           const U = (element) => ({
  3524.             querySelector: (selector) => querySelector.call(element, selector)
  3525.           });
  3526.  
  3527.           let qid = 0;
  3528.           mclp.atBottomChanged_ = function (a) {
  3529.             let tid = ++qid;
  3530.             let b = this;
  3531.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  3532.               if (tid !== qid) return;
  3533.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  3534.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  3535.               this.hideShowMoreAsync_ = null,
  3536.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  3537.           }
  3538.  
  3539.           console.log("atBottomChanged_", "OK");
  3540.         } else {
  3541.           console.log("atBottomChanged_", "NG");
  3542.         }
  3543.  
  3544.         if ((mclp.onScrollItems_ || 0).length === 1) {
  3545.  
  3546.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  3547.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  3548.           mclp.onScrollItems77_ = async function (evt) {
  3549.             if (myw > 1e9) myw = 9;
  3550.             let tid = ++myw;
  3551.  
  3552.             await new Promise(requestAnimationFrame);
  3553.  
  3554.             if (tid !== myw) {
  3555.               return;
  3556.             }
  3557.  
  3558.             const cnt = this;
  3559.  
  3560.             await Promise.resolve();
  3561.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  3562.               await Promise.resolve().then(() => {
  3563.                 this.ytRendererBehavior.onScroll(evt);
  3564.               }).then(() => {
  3565.                 if (this.canScrollToBottom_()) {
  3566.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  3567.                   if (hasUserJustInteracted) {
  3568.                     // only when there is an user action
  3569.                     this.setAtBottom();
  3570.                     return 1;
  3571.                   }
  3572.                 } else {
  3573.                   // no message inserting
  3574.                   this.setAtBottom();
  3575.                   return 1;
  3576.                 }
  3577.               }).then((r) => {
  3578.  
  3579.                 if (this.activeItems_.length) {
  3580.  
  3581.                   if (this.canScrollToBottom_()) {
  3582.                     this.flushActiveItems_();
  3583.                     return 1 && r;
  3584.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  3585.                     // delayed due to user action
  3586.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  3587.                     return 0;
  3588.                   }
  3589.                 }
  3590.               }).then((r) => {
  3591.                 if (r) {
  3592.                   // ensure setAtBottom is correctly set
  3593.                   this.setAtBottom();
  3594.                 }
  3595.               });
  3596.             } else {
  3597.               cnt.onScrollItems66_(evt);
  3598.             }
  3599.  
  3600.             await Promise.resolve();
  3601.  
  3602.           }
  3603.  
  3604.           mclp.onScrollItems_ = function (evt) {
  3605.  
  3606.             const cnt = this;
  3607.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3608.               cnt.onScrollItems77_(evt).then(() => {
  3609.                 resolve();
  3610.               });
  3611.             });
  3612.           }
  3613.           console.log("onScrollItems_", "OK");
  3614.         } else {
  3615.           console.log("onScrollItems_", "NG");
  3616.         }
  3617.  
  3618.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  3619.  
  3620.           assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  3621.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  3622.  
  3623.           mclp.handleLiveChatActions77_ = async function (arr) {
  3624.             if (typeof (arr || 0).length !== 'number') {
  3625.               this.handleLiveChatActions66_(arr);
  3626.               return;
  3627.             }
  3628.             if (mzt > 1e9) mzt = 9;
  3629.             let tid = ++mzt;
  3630.  
  3631.             if (zarr === null) zarr = arr;
  3632.             else Array.prototype.push.apply(zarr, arr);
  3633.             arr = null;
  3634.  
  3635.             await new Promise(requestAnimationFrame);
  3636.  
  3637.             if (tid !== mzt || zarr === null) {
  3638.               return;
  3639.             }
  3640.  
  3641.             const carr = zarr;
  3642.             zarr = null;
  3643.  
  3644.             await Promise.resolve();
  3645.             this.handleLiveChatActions66_(carr);
  3646.             await Promise.resolve();
  3647.  
  3648.           }
  3649.  
  3650.           mclp.handleLiveChatActions_ = function (arr) {
  3651.  
  3652.             const cnt = this;
  3653.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3654.               cnt.handleLiveChatActions77_(arr).then(() => {
  3655.                 resolve();
  3656.               });
  3657.             });
  3658.           }
  3659.           console.log("handleLiveChatActions_", "OK");
  3660.         } else {
  3661.           console.log("handleLiveChatActions_", "NG");
  3662.         }
  3663.  
  3664.         mclp.hasUserJustInteracted11_ = () => {
  3665.           const t = dateNow();
  3666.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  3667.         }
  3668.  
  3669.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  3670.  
  3671.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  3672.  
  3673.           mclp.canScrollToBottom_ = function () {
  3674.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  3675.           }
  3676.  
  3677.           console.log("canScrollToBottom_", "OK");
  3678.         } else {
  3679.           console.log("canScrollToBottom_", "NG");
  3680.         }
  3681.  
  3682.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  3683.  
  3684.           mclp.isSmoothScrollEnabled_ = function () {
  3685.             return false;
  3686.           }
  3687.  
  3688.           mclp.maybeResizeScrollContainer_ = function () {
  3689.             //
  3690.           }
  3691.  
  3692.           mclp.refreshOffsetContainerHeight_ = function () {
  3693.             //
  3694.           }
  3695.  
  3696.           mclp.smoothScroll_ = function () {
  3697.             //
  3698.           }
  3699.  
  3700.           mclp.resetSmoothScroll_ = function () {
  3701.             //
  3702.           }
  3703.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  3704.         } else {
  3705.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  3706.         }
  3707.  
  3708.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3709.  
  3710.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  3711.           mclp.handleAddChatItemAction_ = function (a) {
  3712.             try {
  3713.               if (a && typeof a === 'object' && !('length' in a)) {
  3714.                 fixLiveChatItem(a.item, null);
  3715.                 console.assert(arguments[0] === a);
  3716.               }
  3717.             } catch (e) { console.warn(e) }
  3718.             return this.handleAddChatItemAction66_.apply(this, arguments);
  3719.           }
  3720.  
  3721.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3722.         } else {
  3723.  
  3724.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3725.         }
  3726.  
  3727.  
  3728.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3729.  
  3730.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  3731.           mclp.handleReplaceChatItemAction_ = function (a) {
  3732.             try {
  3733.               if (a && typeof a === 'object' && !('length' in a)) {
  3734.                 fixLiveChatItem(a.replacementItem, null);
  3735.                 console.assert(arguments[0] === a);
  3736.               }
  3737.             } catch (e) { console.warn(e) }
  3738.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  3739.           }
  3740.  
  3741.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3742.         } else {
  3743.  
  3744.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3745.         }
  3746.  
  3747.         console.log("[End]");
  3748.         console.groupEnd();
  3749.  
  3750.       }).catch(console.warn);
  3751.  
  3752.  
  3753.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  3754.  
  3755.         let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  3756.  
  3757.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  3758.  
  3759.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  3760.           let v = `${attrValue}`;
  3761.           // conside a ticker is 101px width
  3762.           // 1% = 1.01px
  3763.           // 0.2% = 0.202px
  3764.  
  3765.  
  3766.           const ratio1 = (yd.ratio * 100);
  3767.           if (ratio1 > -1) { // avoid NaN
  3768.  
  3769.             // countdownDurationMs
  3770.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  3771.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  3772.             // 150000 - 1%    <1% = 1.5s>
  3773.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  3774.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  3775.  
  3776.             // 99px * 5% = 4.95px
  3777.  
  3778.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  3779.  
  3780.  
  3781.             // 1% Duration
  3782.  
  3783.             let ratio2 = ratio1;
  3784.  
  3785.             const ydd = yd.data;
  3786.             if (ydd) {
  3787.  
  3788.               const d1 = ydd.durationSec;
  3789.               const d2 = ydd.fullDurationSec;
  3790.  
  3791.               // @ step timing [min. 0.2%]
  3792.               let numOfSteps = 500;
  3793.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  3794.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  3795.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  3796.                 else if (d2 > 100) numOfSteps = 100; // 1%
  3797.                 else if (d2 > 50) numOfSteps = 50; // 2%
  3798.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  3799.                 else numOfSteps = 20;
  3800.               }
  3801.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  3802.               if (numOfSteps < 5) numOfSteps = 5;
  3803.  
  3804.               const rd = numOfSteps / 100.0;
  3805.  
  3806.               ratio2 = Math.round(ratio2 * rd) / rd;
  3807.  
  3808.               // ratio2 = Math.round(ratio2 * 5) / 5;
  3809.               ratio2 = ratio2.toFixed(1);
  3810.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  3811.  
  3812.               if (yd.__style_last__ === v) return;
  3813.               yd.__style_last__ = v;
  3814.               // do not consider any delay here.
  3815.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  3816.  
  3817.             }
  3818.           }
  3819.  
  3820.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  3821.  
  3822.  
  3823.         } else {
  3824.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  3825.         }
  3826.  
  3827.       };
  3828.  
  3829.  
  3830.       const fpTicker = (renderer) => {
  3831.         const cnt = renderer.inst || renderer;
  3832.         assertor(() => typeof (cnt || 0).is === 'string');
  3833.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  3834.         const container = (cnt.$ || 0).container;
  3835.         if (container) {
  3836.           assertor(() => (container || 0).nodeType === 1);
  3837.           assertor(() => typeof container.setAttribute === 'function');
  3838.           container.setAttribute = tickerContainerSetAttribute;
  3839.         } else {
  3840.           console.warn(`"container" does not exist in ${cnt.is}`);
  3841.         }
  3842.       };
  3843.  
  3844.  
  3845.       const tags = ["yt-live-chat-ticker-paid-message-item-renderer", "yt-live-chat-ticker-paid-sticker-item-renderer",
  3846.         "yt-live-chat-ticker-renderer", "yt-live-chat-ticker-sponsor-item-renderer"];
  3847.  
  3848.  
  3849.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  3850.  
  3851.         mightFirstCheckOnYtInit();
  3852.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  3853.         console.log("[Begin]");
  3854.  
  3855.         // << if ENABLE_VIDEO_PROGRESS_STATE_FIX >>
  3856.         let isMainVideoOngoing = null;
  3857.         let mainVideoLastProgress = null;
  3858.         // << end >>
  3859.  
  3860.         for (const tag of tags) {
  3861.           const dummy = document.createElement(tag);
  3862.  
  3863.           const cProto = getProto(dummy);
  3864.           if (!cProto || !cProto.attached) {
  3865.             console.warn(`proto.attached for ${tag} is unavailable.`);
  3866.             continue;
  3867.           }
  3868.  
  3869.           cProto.attached77 = cProto.attached;
  3870.  
  3871.           cProto.attached = function () {
  3872.             fpTicker(this.hostElement || this);
  3873.             return this.attached77();
  3874.           }
  3875.  
  3876.           for (const elm of document.getElementsByTagName(tag)) {
  3877.             if ((elm || elm.inst).isAttached === true) {
  3878.               fpTicker(elm);
  3879.             }
  3880.           }
  3881.  
  3882.  
  3883.           let rafHackState = 0;
  3884.  
  3885.           let isTimingFunctionHackable = false;
  3886.  
  3887.           let urt = 0;
  3888.  
  3889.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  3890.  
  3891.             // console.log('startCountdown', typeof cProto.startCountdown)
  3892.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  3893.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  3894.  
  3895.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  3896.  
  3897.           } else {
  3898.             console.log(`Skip Timing Function Modification for ${tag}`);
  3899.             continue;
  3900.           }
  3901.  
  3902.  
  3903.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  3904.  
  3905.             // cancelable - this.rafId < isAnimationPausedChanged >
  3906.             rafHackState = 1;
  3907.  
  3908.             if (isTimingFunctionHackable) {
  3909.               rafHackState = 2;
  3910.  
  3911.             } else {
  3912.               rafHackState = 4;
  3913.             }
  3914.  
  3915.           }
  3916.  
  3917.           const isCSSPropertySupported = () => {
  3918.  
  3919.             if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return;
  3920.             const documentElement = document.documentElement;
  3921.             if (!documentElement) {
  3922.               console.warn('document.documentElement is not found');
  3923.               return false;
  3924.             }
  3925.             if (`${window.getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  3926.               return false;
  3927.             }
  3928.             return true;
  3929.  
  3930.           };
  3931.  
  3932.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  3933.  
  3934.           const doRAFHack = rafHackState === 2;
  3935.  
  3936.           cProto._throwOut = function () {
  3937.             this._r782 = 1;
  3938.             Promise.resolve().then(() => {
  3939.               if (typeof this.requestRemoval === 'function') {
  3940.                 const id = (this.data || 0).id;
  3941.                 if (!id) this.data = { id: 1 };
  3942.                 try {
  3943.                   this.requestRemoval();
  3944.                 } catch (e) { }
  3945.               }
  3946.               this.detached();
  3947.               this.data = null;
  3948.               this.countdownMs = 0;
  3949.               this.lastCountdownTimeMs = null;
  3950.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  3951.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  3952.               if (this.__dataReady === true) this.__dataReady = false;
  3953.               const hm = this.hostElement || this;
  3954.               if (hm.parentNode) hm.remove();
  3955.               if (hm.firstChild) hm.textContent = '';
  3956.             }).catch(e => {
  3957.               console.warn(e);
  3958.             });
  3959.           };
  3960.  
  3961.           // cProto._checkTickerBackgroundChanged = doAnimator ? function () {
  3962.           //   if (runTickerClassName === 'run-ticker') {
  3963.           //     const container = (this.$ || 0).container || 0;
  3964.           //     if (!container) return;
  3965.           //     container.classList.add('run-ticker-test');
  3966.           //     const evaluated = `${window.getComputedStyle(container).background}`;
  3967.           //     container.classList.remove('run-ticker-test');
  3968.           //     if (evaluated.indexOf('0.') < 4) {
  3969.           //       // not fulfilling
  3970.           //       // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3971.           //       runTickerClassName = 'run-ticker-forced';
  3972.           //       console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3973.           //         "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3974.           //         "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3975.           //       );
  3976.           //       console.warn(`%cWarning:\n\tYou might have added a userscript or extension that hacks ticker background too.\n\tYouTube Super Fast Chat will override it for you.`, 'color: #bada55');
  3977.           //       console.groupEnd();
  3978.           //     }
  3979.           //   }
  3980.           // } : null;
  3981.  
  3982.           cProto._makeAnimator = doAnimator ? function () {
  3983.             if (this._r782) return;
  3984.             // if (!this.isAttached) return;
  3985.             if (!this._runnerAE) {
  3986.               const aElement = (this.$ || 0).container;
  3987.               if (!aElement) return console.warn("this.$.container is undefined");
  3988.               const da = this.data;
  3989.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  3990.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  3991.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  3992.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  3993.  
  3994.               // if (!this.__tickerBackgroundInitialChecked__) {
  3995.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  3996.               //   console.log('__tickerBackgroundInitialChecked__')
  3997.               //   this._checkTickerBackgroundChanged();
  3998.               // }
  3999.  
  4000.               aElement.style.setProperty('--ticker-c1', c1);
  4001.               aElement.style.setProperty('--ticker-c2', c2);
  4002.               aElement.classList.add(runTickerClassName);
  4003.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4004.               // this._aeStartV = this.countdownMs;
  4005.               // this._aeStartT = this.countdownDurationMs;
  4006.               if (!(p >= 0 && p <= 100)) {
  4007.                 console.warn('incorrect time ratio', p);
  4008.               } else {
  4009.                 /*
  4010.                 const u0 = p.toFixed(4) + '%';
  4011.                 this._runnerAE = animate.call(aElement,
  4012.                   [
  4013.                     { '--ticker-rtime': u0 },
  4014.                     { '--ticker-rtime': '0%' }
  4015.                   ]
  4016.                   ,
  4017.                   {
  4018.                     fill: "forwards",
  4019.                     duration: this.countdownMs,
  4020.                     easing: "linear"
  4021.                   }
  4022.                 );
  4023.                 */
  4024.  
  4025.                 let timingFn = 'linear';
  4026.  
  4027.                 const totalDuration = this.countdownDurationMs;
  4028.  
  4029.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4030.  
  4031.                   // @ step timing [min. 0.2%]
  4032.                   let stepInterval = 0.2; // unit: %
  4033.                   if (totalDuration > 400000) stepInterval = 0.2;
  4034.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4035.                   else if (totalDuration > 100000) stepInterval = 1;
  4036.                   else if (totalDuration > 50000) stepInterval = 2;
  4037.                   else if (totalDuration > 25000) stepInterval = 5;
  4038.                   else stepInterval = 5;
  4039.  
  4040.                   let numOfSteps = Math.round(100 / stepInterval);
  4041.  
  4042.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4043.                   if (numOfSteps < 5) numOfSteps = 5;
  4044.  
  4045.                   timingFn = `steps(${numOfSteps}, end)`;
  4046.  
  4047.                 }
  4048.  
  4049.  
  4050.                 const ae = animate.call(aElement,
  4051.                   [
  4052.                     { '--ticker-rtime': '100%' },
  4053.                     { '--ticker-rtime': '0%' }
  4054.                   ]
  4055.                   ,
  4056.                   {
  4057.                     fill: "forwards",
  4058.                     duration: totalDuration,
  4059.                     easing: timingFn
  4060.                   }
  4061.                 );
  4062.  
  4063.                 this._runnerAE = ae;
  4064.  
  4065.                 ae.onfinish = (event) => {
  4066.                   this.onfinish = null;
  4067.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4068.                     this._aeFinished(event);
  4069.                   }
  4070.                 }
  4071.  
  4072.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4073.  
  4074.                 if (bq >= 0 && bq <= totalDuration) {
  4075.  
  4076.                   if (bq > totalDuration - 1) {
  4077.                     ae.currentTime = bq;
  4078.                     // setTimeout(() => {
  4079.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4080.                     // }, 1);
  4081.                   } else {
  4082.                     ae.currentTime = bq;
  4083.                   }
  4084.                 } else {
  4085.                   console.warn('Error on setting _runnerAE.currentTime!');
  4086.                 }
  4087.  
  4088.  
  4089.                 aeConstructor = ae.constructor; // constructor is from iframe
  4090.                 return ae;
  4091.               }
  4092.             } else {
  4093.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4094.               // assume just time update
  4095.               const ae = this._runnerAE;
  4096.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4097.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4098.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4099.               if (!(p >= 0 && p <= 100)) {
  4100.                 console.warn('incorrect time ratio', p);
  4101.               } else {
  4102.                 // let u0 = p.toFixed(4) + '%'
  4103.                 /*
  4104.                 ae.effect.setKeyframes([
  4105.                   { '--ticker-rtime': u0 },
  4106.                   { '--ticker-rtime': '0%' }
  4107.                 ]);
  4108.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4109.                 */
  4110.                 // ae.currentTime = 0;
  4111.  
  4112.  
  4113.  
  4114.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4115.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4116.  
  4117.                   this._runnerAE.currentTime = bq
  4118.                 } else {
  4119.                   console.warn('Error on setting _runnerAE.currentTime!');
  4120.                 }
  4121.  
  4122.  
  4123.                 ae.play();
  4124.                 return ae;
  4125.               }
  4126.             }
  4127.           } : null;
  4128.  
  4129.           cProto._aeFinished = doAnimator ? function (event) {
  4130.  
  4131.             if (this._r782) return;
  4132.  
  4133.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4134.               this._throwOut();
  4135.               return;
  4136.             }
  4137.  
  4138.             if (doAnimator) {
  4139.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4140.  
  4141.               let lc = window.performance.now();
  4142.               this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4143.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4144.               this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4145.               if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4146.  
  4147.               this.countdownMs = 0;
  4148.               this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  4149.  
  4150.               if (this.isAttached) {
  4151.                 let fastRemoved = false;
  4152.                 if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4153.                   // no animation if the video page is switched from background to foreground
  4154.                   // this.hostElement.style.display = 'none';
  4155.                   const id = (this.data || 0).id || 0;
  4156.                   if (!id) this.data = { id: 1 }
  4157.                   try {
  4158.                     this.requestRemoval();
  4159.                     fastRemoved = true;
  4160.                   } catch (e) {
  4161.  
  4162.                   }
  4163.                 }
  4164.  
  4165.                 if (!fastRemoved) {
  4166.                   "auto" === this.hostElement.style.width && this.setContainerWidth();
  4167.                   this.slideDown();
  4168.                 }
  4169.               }
  4170.  
  4171.  
  4172.             } else {
  4173.               console.warn('unexpected issue')
  4174.             }
  4175.           } : null;
  4176.  
  4177.  
  4178.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  4179.  
  4180.             cProto.rtk = 0;
  4181.  
  4182.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  4183.               urt++;
  4184.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  4185.               cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  4186.               cProto.handlePauseReplay = function () {
  4187.                 if (playerState !== 2) return;
  4188.                 if (this.isAttached) {
  4189.                   if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  4190.                   const tid = ++this.rtk;
  4191.                   getRafPromiseForTickers().then(() => {
  4192.                     if (tid === this.rtk) {
  4193.                       if (playerState === 2) {
  4194.                         this.handlePauseReplay66();
  4195.                         isMainVideoOngoing = false;
  4196.                       }
  4197.                     }
  4198.                   })
  4199.                 }
  4200.               };
  4201.             } else {
  4202.               console.log('Error for setting cProto.handlePauseReplay', tag)
  4203.             }
  4204.  
  4205.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  4206.               urt++;
  4207.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  4208.               cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  4209.               cProto.handleResumeReplay = function () {
  4210.                 if (playerState === 2) return;
  4211.                 if (this.isAttached) {
  4212.                   if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  4213.                   const tid = ++this.rtk;
  4214.                   getRafPromiseForTickers().then(() => {
  4215.                     if (tid === this.rtk) {
  4216.                       if (playerState === 3 || playerState === 1) {
  4217.                         this.handleResumeReplay66();
  4218.                         isMainVideoOngoing = true;
  4219.                       }
  4220.                     }
  4221.                   })
  4222.                 }
  4223.               };
  4224.             } else {
  4225.               console.log('Error for setting cProto.handleResumeReplay', tag)
  4226.             }
  4227.  
  4228.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  4229.               urt++;
  4230.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  4231.               cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  4232.               cProto.handleReplayProgress = function (a) {
  4233.                 if (this.isAttached) {
  4234.                   mainVideoLastProgress = a;
  4235.                   const tid = ++this.rtk;
  4236.                   getRafPromiseForTickers().then(() => {
  4237.                     if (tid === this.rtk) {
  4238.                       this.handleReplayProgress66(mainVideoLastProgress);
  4239.                     }
  4240.                   })
  4241.                 }
  4242.               };
  4243.             } else {
  4244.               console.log('Error for setting cProto.handleReplayProgress', tag)
  4245.             }
  4246.  
  4247.           }
  4248.  
  4249.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  4250.  
  4251.           const doTimerFnModification = (doRAFHack || doAnimator);
  4252.  
  4253.           let windowShownAt = 0;
  4254.           if (doTimerFnModification) {
  4255.  
  4256.             window.addEventListener('visibilitychange', () => {
  4257.               if (document.visibilityState === 'visible') windowShownAt = Date.now();
  4258.               else windowShownAt = 0;
  4259.             }, false);
  4260.  
  4261.           }
  4262.  
  4263.           cProto.startCountdown = doTimerFnModification ? function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4264.  
  4265.             // a.durationSec [s] => countdownMs [ms]
  4266.             // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4267.             // lastCountdownTimeMs => raf ongoing
  4268.             // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4269.  
  4270.             if (this._r782) return;
  4271.  
  4272.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4273.               this._throwOut();
  4274.               return;
  4275.             }
  4276.  
  4277.             if (doAnimator) {
  4278.               b = void 0 === b ? 0 : b;
  4279.               if (void 0 !== a) {
  4280.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4281.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4282.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4283.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  4284.                   this.rafId = 1
  4285.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4286.                   this.detlaSincePausedSecs = 0;
  4287.                   const ae = this._makeAnimator();
  4288.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4289.  
  4290.                   if (this.isAnimationPaused === void 0 && ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED && isMainVideoOngoing === false && mainVideoLastProgress !== null) {
  4291.                     // << This is mainly for [PlayBack Replay] backwards >>
  4292.                     // fix the case when the main video is paused but due to seeking the tickers are added
  4293.                     // play first then pause immediately to allow the visual effect of initial state
  4294.                     // don't forget to set the "playerProgressSec"
  4295.                     // otherwise when it resumes from paused state, the detlaSincePausedSecs will be huge
  4296.                     this.playerProgressSec = mainVideoLastProgress; // save the progress first
  4297.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4298.                     this.detlaSincePausedSecs = 0;
  4299.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4300.                   }
  4301.                 }
  4302.               }
  4303.             } else {
  4304.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4305.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4306.               b = void 0 === b ? 0 : b;
  4307.               void 0 !== a && (this.countdownMs = 1E3 * a,
  4308.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4309.                 this.ratio = 1,
  4310.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  4311.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4312.             }
  4313.  
  4314.           } : cProto.startCountdown;
  4315.  
  4316.           // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4317.           cProto.updateTimeout = doTimerFnModification ? function (a) {
  4318.  
  4319.             if (this._r782) return;
  4320.  
  4321.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4322.               this._throwOut();
  4323.               return;
  4324.             }
  4325.  
  4326.             if (doAnimator) {
  4327.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4328.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4329.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4330.               }
  4331.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4332.               if (this.isAttached && this.countdownMs) {
  4333.                 this.lastCountdownTimeMs = a
  4334.                 const ae = this._makeAnimator(); // request raf
  4335.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4336.               } else {
  4337.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4338.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4339.                     this.slideDown()));
  4340.               }
  4341.             } else {
  4342.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4343.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4344.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4345.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4346.               }
  4347.               this.ratio = this.countdownMs / this.countdownDurationMs;
  4348.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4349.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4350.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4351.                     this.slideDown()))
  4352.             }
  4353.  
  4354.           } : cProto.updateTimeout;
  4355.  
  4356.           // let ez = 0;
  4357.           cProto.isAnimationPausedChanged = doTimerFnModification ? function (a, b) {
  4358.  
  4359.             if (this._r782) return;
  4360.  
  4361.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4362.               this._throwOut();
  4363.               return;
  4364.             }
  4365.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4366.             this._forceNoDetlaSincePausedSecs783 = 0;
  4367.  
  4368.             Promise.resolve().then(() => {
  4369.  
  4370.               if (doAnimator) {
  4371.  
  4372.                 const playState = (this._runnerAE || 0).playState;
  4373.                 if (a && playState === 'running') {
  4374.  
  4375.                 } else if (!a && playState !== 'running' && b) {
  4376.  
  4377.                 } else {
  4378.                   return;
  4379.                 }
  4380.               }
  4381.  
  4382.               // if (Math.abs(this.detlaSincePausedSecs) < 0.01) this.detlaSincePausedSecs = 0;
  4383.               if (doAnimator) {
  4384.                 const pu = () => { // running -> pause
  4385.                   this._runnerAE.pause()
  4386.                   let lc = window.performance.now();
  4387.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4388.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4389.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4390.                 };
  4391.                 const wa = () => { // pause -> running
  4392.                   if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4393.                   a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4394.                   this.detlaSincePausedSecs = 0;
  4395.                   this.updateTimeout(a);
  4396.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  4397.                 };
  4398.                 a ? (this._runnerAE && pu()) : (!a && b && wa());
  4399.               } else {
  4400.                 // ez++;
  4401.                 // if(ez> 1e9) ez=9;
  4402.                 if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4403.                 a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4404.                   this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4405.                     this.detlaSincePausedSecs = 0),
  4406.                   this.boundUpdateTimeout37_(a),
  4407.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  4408.               }
  4409.  
  4410.             }).catch(e => {
  4411.               console.log(e);
  4412.             });
  4413.  
  4414.  
  4415.  
  4416.           } : cProto.isAnimationPausedChanged;
  4417.  
  4418.  
  4419.           if (doAnimator) {
  4420.  
  4421.             assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  4422.  
  4423.             let dummyValueForStyleReturn = null;
  4424.  
  4425.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  4426.             cProto.computeContainerStyle = function (a, b) {
  4427.  
  4428.               if (this._r782) return;
  4429.  
  4430.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4431.                 this._throwOut();
  4432.                 return;
  4433.               }
  4434.  
  4435.               const fullDurationSec = a ? a.fullDurationSec : 0;
  4436.               if (fullDurationSec > 0 && typeof b === 'number') {
  4437.  
  4438.                 // usually zero
  4439.  
  4440.                 // let currentDuationSrc = b * fullDurationSec; // a.durationSec
  4441.  
  4442.                 // console.log(231, fullDurationSec, b, currentDuationSrc, a.durationSec);
  4443.  
  4444.                 /*
  4445.                 if (a.mdsz && typeof a.mdst) return a.mdst;
  4446.                 a.mdsz = 1;
  4447.  
  4448.  
  4449.  
  4450.                 let c1 = this.colorFromDecimal(a.startBackgroundColor);
  4451.                 let c2 = this.colorFromDecimal(a.endBackgroundColor);
  4452.  
  4453.                 let ratio = currentDuationSrc / fullDurationSec;
  4454.  
  4455.                 let m = (ratio * 100).toFixed(1);
  4456.  
  4457.  
  4458.                 let s = `--background:linear-gradient(90deg, ${c1},${c1} ${m}%,${c2} ${m}%,${c2});`
  4459.                 let ro = {
  4460.                   "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4461.                   "implementsGoogStringTypedString": true
  4462.                 };
  4463.  
  4464.                 ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4465.  
  4466.                 a.mdst = s;
  4467.  
  4468.                 return ro;
  4469.                 */
  4470.               }
  4471.  
  4472.  
  4473.  
  4474.               // return this.computeContainerStyle66.apply(this, arguments);
  4475.  
  4476.               if (dummyValueForStyleReturn === null) {
  4477.  
  4478.                 let s = `--nx:82;`
  4479.                 let ro = {
  4480.                   "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4481.                   "implementsGoogStringTypedString": true
  4482.                 };
  4483.  
  4484.                 ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4485.  
  4486.  
  4487.                 dummyValueForStyleReturn = ro;
  4488.  
  4489.  
  4490.               }
  4491.  
  4492.  
  4493.               return dummyValueForStyleReturn;
  4494.  
  4495.  
  4496.             }
  4497.  
  4498.           }
  4499.  
  4500.           if (doTimerFnModification === true) hasTimerModified = true;
  4501.  
  4502.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  4503.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  4504.           }
  4505.  
  4506.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  4507.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  4508.           }
  4509.  
  4510.         }
  4511.         console.log("[End]");
  4512.         console.groupEnd();
  4513.  
  4514.  
  4515.       }).catch(console.warn);
  4516.  
  4517.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  4518.  
  4519.         mightFirstCheckOnYtInit();
  4520.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  4521.         console.log("[Begin]");
  4522.         (() => {
  4523.  
  4524.           const tag = "yt-live-chat-ticker-renderer"
  4525.           const dummy = document.createElement(tag);
  4526.  
  4527.           const cProto = getProto(dummy);
  4528.           if (!cProto || !cProto.attached) {
  4529.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4530.             return;
  4531.           }
  4532.  
  4533.           if (RAF_FIX_keepScrollClamped) {
  4534.  
  4535.             // to be improved
  4536.  
  4537.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  4538.  
  4539.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  4540.               cProto.keepScrollClamped = function () {
  4541.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  4542.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  4543.                 this.maybeClampScroll()
  4544.               }
  4545.  
  4546.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  4547.             } else {
  4548.  
  4549.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  4550.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  4551.             }
  4552.  
  4553.           }
  4554.  
  4555.  
  4556.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.44.32' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  4557.             // to be replaced by animator
  4558.  
  4559.             cProto.startScrolling = function (a) {
  4560.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  4561.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  4562.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  4563.               this.scrollRatePixelsPerSecond = a;
  4564.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4565.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  4566.             };
  4567.  
  4568.             if (RAF_FIX_scrollIncrementally === 2) {
  4569.  
  4570.               // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  4571.  
  4572.               cProto.scrollIncrementally = function (a) {
  4573.                 const b = a - (this.lastFrameTimestamp || 0);
  4574.                 const rate = this.scrollRatePixelsPerSecond
  4575.                 const q = b / 1E3 * (rate || 0);
  4576.  
  4577.                 const sl = this.$.items.scrollLeft;
  4578.                 // console.log(rate, sl, q)
  4579.                 if (this.lastFrameTimestamp == this.scrollStartTime) {
  4580.  
  4581.                 } else if (q > -1e-5 && q < 1e-5) {
  4582.  
  4583.                 } else {
  4584.                   let cond1 = sl > 0 && rate > 0 && q > 0;
  4585.                   let cond2 = sl > 0 && rate < 0 && q < 0;
  4586.                   let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  4587.                   if (cond1 || cond2 || cond3) {
  4588.                     this.$.items.scrollLeft += q;
  4589.                     this.maybeClampScroll();
  4590.                     this.updateArrows();
  4591.                   }
  4592.                 }
  4593.  
  4594.                 this.lastFrameTimestamp = a;
  4595.                 this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4596.                 0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  4597.               };
  4598.  
  4599.             } else {
  4600.  
  4601.               cProto.scrollIncrementally = function (a) {
  4602.                 const b = a - (this.lastFrameTimestamp || 0);
  4603.                 this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  4604.                 this.maybeClampScroll();
  4605.                 this.updateArrows();
  4606.                 this.lastFrameTimestamp = a;
  4607.                 this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4608.                 0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  4609.               };
  4610.  
  4611.             }
  4612.  
  4613.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  4614.           } else {
  4615.             assertor(() => fnIntegrity(cProto.startScrolling, '1.44.32'));
  4616.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  4617.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  4618.           }
  4619.  
  4620.  
  4621.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  4622.  
  4623.             cProto.attached37 = cProto.attached;
  4624.             cProto.detached37 = cProto.detached;
  4625.  
  4626.             let naohzId = 0;
  4627.             cProto.__naohzId__ = 0;
  4628.             cProto.attached = function () {
  4629.               Promise.resolve().then(() => {
  4630.  
  4631.                 const hostElement = this.hostElement || this;
  4632.                 if (!(hostElement instanceof HTMLElement)) return;
  4633.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  4634.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  4635.                 // or #chat-messages
  4636.                 if (!ironPage) return;
  4637.                 this.__naohzId__ = ++naohzId;
  4638.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  4639.  
  4640.                 ironPage.removeEventListener('click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4641.                 ironPage.addEventListener('click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4642.  
  4643.               });
  4644.               return this.attached37.apply(this, arguments);
  4645.             };
  4646.             cProto.detached = function () {
  4647.               Promise.resolve().then(() => {
  4648.  
  4649.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  4650.                 if (!ironPage) return;
  4651.  
  4652.                 ironPage.removeEventListener('click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4653.  
  4654.               });
  4655.               return this.detached37.apply(this, arguments);
  4656.             };
  4657.  
  4658.             const clickFade = (p) => {
  4659.  
  4660.               let u = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  4661.               if (u) u.click();
  4662.             };
  4663.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  4664.  
  4665.               const target = (evt || 0).target || 0;
  4666.               evt = null;
  4667.               if (!target) return;
  4668.  
  4669.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  4670.                 const is = p.is;
  4671.                 if (typeof is === 'string' && is) {
  4672.  
  4673.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  4674.                     Promise.resolve(p).then(clickFade);
  4675.                     return;
  4676.                   }
  4677.                   if (is !== 'yt-live-chat-ticker-renderer') {
  4678.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  4679.                     if (!is.endsWith('-renderer')) return;
  4680.                   }
  4681.  
  4682.                 } else {
  4683.                   if ((p.nodeName || '').includes('BUTTON')) return;
  4684.                 }
  4685.  
  4686.               }
  4687.             };
  4688.  
  4689.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  4690.  
  4691.           } else {
  4692.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  4693.           }
  4694.  
  4695.  
  4696.         })();
  4697.  
  4698.         console.log("[End]");
  4699.  
  4700.         console.groupEnd();
  4701.  
  4702.       }).catch(console.warn);
  4703.  
  4704.  
  4705.       if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  4706.  
  4707.  
  4708.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  4709.  
  4710.           mightFirstCheckOnYtInit();
  4711.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  4712.           console.log("[Begin]");
  4713.           (() => {
  4714.  
  4715.             const tag = "yt-live-chat-message-input-renderer"
  4716.             const dummy = document.createElement(tag);
  4717.  
  4718.             const cProto = getProto(dummy);
  4719.             if (!cProto || !cProto.attached) {
  4720.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4721.               return;
  4722.             }
  4723.  
  4724.             let doHack = false;
  4725.             if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  4726.  
  4727.               // not cancellable
  4728.  
  4729.  
  4730.               doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  4731.  
  4732.             }
  4733.  
  4734.             if (doHack) {
  4735.  
  4736.               cProto.handleTimeout = function (a) {
  4737.                 console.log('cProto.handleTimeout', tag)
  4738.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4739.                 this.timeoutDurationMs = this.timeoutMs = a;
  4740.                 this.countdownRatio = 1;
  4741.                 0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  4742.               };
  4743.               cProto.updateTimeout = function (a) {
  4744.                 console.log('cProto.updateTimeout', tag)
  4745.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4746.                 this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  4747.                   this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  4748.                 this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  4749.                   rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  4750.               };
  4751.  
  4752.               console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  4753.             } else {
  4754.  
  4755.               console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  4756.               console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  4757.  
  4758.               console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  4759.             }
  4760.  
  4761.           })();
  4762.  
  4763.           console.log("[End]");
  4764.  
  4765.           console.groupEnd();
  4766.  
  4767.  
  4768.         })
  4769.  
  4770.  
  4771.       }
  4772.  
  4773.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  4774.  
  4775.  
  4776.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  4777.  
  4778.           mightFirstCheckOnYtInit();
  4779.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  4780.           console.log("[Begin]");
  4781.           (() => {
  4782.  
  4783.             const tag = "yt-emoji-picker-renderer"
  4784.             const dummy = document.createElement(tag);
  4785.  
  4786.             const cProto = getProto(dummy);
  4787.             if (!cProto || !cProto.attached) {
  4788.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4789.               return;
  4790.             }
  4791.  
  4792.             let doHack = false;
  4793.             if (typeof cProto.animateScroll_ === 'function') {
  4794.  
  4795.               // not cancellable
  4796.               console.log('animateScroll_', typeof cProto.animateScroll_)
  4797.  
  4798.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  4799.  
  4800.             }
  4801.  
  4802.             if (doHack) {
  4803.  
  4804.               const querySelector = HTMLElement.prototype.querySelector;
  4805.               const U = (element) => ({
  4806.                 querySelector: (selector) => querySelector.call(element, selector)
  4807.               });
  4808.  
  4809.               cProto.animateScroll_ = function (a) {
  4810.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  4811.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  4812.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  4813.                 a -= this.lastAnimationTime_;
  4814.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  4815.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  4816.                     this.animationEnd_ = this.animationStart_ = null,
  4817.                     this.lastAnimationTime_ = 0);
  4818.                 this.updateButtons_()
  4819.               }
  4820.  
  4821.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  4822.             } else {
  4823.  
  4824.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  4825.             }
  4826.  
  4827.           })();
  4828.  
  4829.           console.log("[End]");
  4830.  
  4831.           console.groupEnd();
  4832.         });
  4833.       }
  4834.  
  4835.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  4836.  
  4837.  
  4838.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  4839.  
  4840.           mightFirstCheckOnYtInit();
  4841.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  4842.           console.log("[Begin]");
  4843.           (() => {
  4844.  
  4845.             const tag = "yt-live-chat-docked-message"
  4846.             const dummy = document.createElement(tag);
  4847.  
  4848.             const cProto = getProto(dummy);
  4849.             if (!cProto || !cProto.attached) {
  4850.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4851.               return;
  4852.             }
  4853.  
  4854.             let doHack = false;
  4855.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  4856.  
  4857.               // cancelable - this.intersectRAF <detached>
  4858.               // yt-live-chat-docked-message
  4859.               // boundCheckIntersections <-> checkIntersections
  4860.               // onDockableMessagesChanged
  4861.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  4862.  
  4863.               console.log('detached', typeof cProto.detached)
  4864.               console.log('checkIntersections', typeof cProto.checkIntersections)
  4865.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  4866.  
  4867.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  4868.  
  4869.             }
  4870.  
  4871.             if (doHack) {
  4872.  
  4873.               cProto.checkIntersections = function () {
  4874.                 // console.log('cProto.checkIntersections', tag)
  4875.                 if (this.dockableMessages.length) {
  4876.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  4877.                   let a = this.dockableMessages[0]
  4878.                     , b = this.hostElement.getBoundingClientRect();
  4879.                   a = a.getBoundingClientRect();
  4880.                   let c = a.top - b.top
  4881.                     , d = 8 >= c;
  4882.                   c = 8 >= c - this.hostElement.clientHeight;
  4883.                   if (d) {
  4884.                     let e;
  4885.                     for (; d;) {
  4886.                       e = this.dockableMessages.shift();
  4887.                       d = this.dockableMessages[0];
  4888.                       if (!d)
  4889.                         break;
  4890.                       d = d.getBoundingClientRect();
  4891.                       c = d.top - b.top;
  4892.                       let f = 8 >= c;
  4893.                       if (8 >= c - a.height)
  4894.                         if (f)
  4895.                           a = d;
  4896.                         else
  4897.                           return;
  4898.                       d = f
  4899.                     }
  4900.                     this.dock(e)
  4901.                   } else
  4902.                     c && this.dockedItem && this.clear()
  4903.                 } else
  4904.                   this.intersectRAF = 0
  4905.               }
  4906.  
  4907.               cProto.onDockableMessagesChanged = function () {
  4908.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  4909.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  4910.               }
  4911.  
  4912.               cProto.detached = function () {
  4913.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  4914.               }
  4915.  
  4916.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  4917.             } else {
  4918.  
  4919.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  4920.             }
  4921.  
  4922.           })();
  4923.  
  4924.           console.log("[End]");
  4925.  
  4926.           console.groupEnd();
  4927.  
  4928.         }).catch(console.warn);
  4929.  
  4930.       }
  4931.  
  4932.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  4933.  
  4934.  
  4935.         customElements.whenDefined("yt-img-shadow").then(() => {
  4936.  
  4937.           mightFirstCheckOnYtInit();
  4938.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  4939.           console.log("[Begin]");
  4940.           (() => {
  4941.  
  4942.             const tag = "yt-img-shadow"
  4943.             const dummy = document.createElement(tag);
  4944.  
  4945.             const cProto = getProto(dummy);
  4946.             if (!cProto || !cProto.attached) {
  4947.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4948.               return;
  4949.             }
  4950.  
  4951.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  4952.  
  4953.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  4954.               cProto.thumbnailChanged_ = function (a) {
  4955.  
  4956.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  4957.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  4958.  
  4959.                 return this.thumbnailChanged66_.apply(this, arguments)
  4960.  
  4961.               }
  4962.               console.log("cProto.thumbnailChanged_ - OK");
  4963.  
  4964.             } else {
  4965.               console.log("cProto.thumbnailChanged_ - NG");
  4966.  
  4967.             }
  4968.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  4969.  
  4970.               cProto.setSrc66_ = cProto.setSrc_;
  4971.               cProto.setSrc_ = function (a) {
  4972.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  4973.                 return this.setSrc66_.apply(this, arguments)
  4974.               }
  4975.  
  4976.               console.log("cProto.setSrc_ - OK");
  4977.             } else {
  4978.  
  4979.               console.log("cProto.setSrc_ - NG");
  4980.             }
  4981.  
  4982.           })();
  4983.  
  4984.           console.log("[End]");
  4985.  
  4986.           console.groupEnd();
  4987.  
  4988.         }).catch(console.warn);
  4989.  
  4990.       }
  4991.  
  4992.       if (FIX_THUMBNAIL_DATACHANGED) {
  4993.  
  4994.  
  4995.  
  4996.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  4997.  
  4998.           mightFirstCheckOnYtInit();
  4999.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  5000.           console.log("[Begin]");
  5001.           (() => {
  5002.  
  5003.             const tag = "yt-live-chat-author-badge-renderer"
  5004.             const dummy = document.createElement(tag);
  5005.  
  5006.             const cProto = getProto(dummy);
  5007.             if (!cProto || !cProto.attached) {
  5008.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5009.               return;
  5010.             }
  5011.  
  5012.  
  5013.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  5014.  
  5015.  
  5016.  
  5017.               cProto.dataChanged86 = cProto.dataChanged;
  5018.               cProto.dataChanged = function (a) {
  5019.  
  5020.                 /*
  5021.  
  5022.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  5023.                       b.removeChild(b.firstChild);
  5024.                   if (a)
  5025.                       if (a.icon) {
  5026.                           var c = document.createElement("yt-icon");
  5027.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  5028.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  5029.                           b.appendChild(c)
  5030.                       } else if (a.customThumbnail) {
  5031.                           c = document.createElement("img");
  5032.                           var d;
  5033.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5034.                           b.appendChild(c),
  5035.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  5036.                       }
  5037.  
  5038.                 */
  5039.  
  5040.                 const image = ((this || 0).$ || 0).image
  5041.                 if (image && a && image.firstElementChild) {
  5042.                   let exisiting = image.firstElementChild;
  5043.                   if (exisiting === image.lastElementChild) {
  5044.  
  5045.  
  5046.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  5047.  
  5048.                       let c = exisiting;
  5049.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  5050.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  5051.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  5052.                       } else {
  5053.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  5054.                         if (c.icon !== p) c.icon = p;
  5055.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  5056.                       }
  5057.                       return;
  5058.  
  5059.  
  5060.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  5061.  
  5062.                       let c = exisiting;
  5063.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  5064.  
  5065.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  5066.                         return;
  5067.                       }
  5068.                       /*
  5069.  
  5070.                       var d;
  5071.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5072.  
  5073.  
  5074.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  5075.                         */
  5076.                     }
  5077.  
  5078.  
  5079.                   }
  5080.                 }
  5081.                 return this.dataChanged86.apply(this, arguments)
  5082.  
  5083.               }
  5084.               console.log("cProto.dataChanged - OK");
  5085.  
  5086.             } else {
  5087.               assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  5088.               console.log("cProto.dataChanged - NG");
  5089.  
  5090.             }
  5091.  
  5092.           })();
  5093.  
  5094.           console.log("[End]");
  5095.  
  5096.           console.groupEnd();
  5097.  
  5098.         }).catch(console.warn);
  5099.  
  5100.  
  5101.       }
  5102.  
  5103.  
  5104.       if (FIX_TOOLTIP_DISPLAY) {
  5105.  
  5106.  
  5107.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  5108.  
  5109.           mightFirstCheckOnYtInit();
  5110.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  5111.           console.log("[Begin]");
  5112.           (() => {
  5113.  
  5114.             const tag = "tp-yt-paper-tooltip"
  5115.             const dummy = document.createElement(tag);
  5116.  
  5117.             const cProto = getProto(dummy);
  5118.             if (!cProto || !cProto.attached) {
  5119.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5120.               return;
  5121.             }
  5122.  
  5123.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  5124.  
  5125.               cProto._readyClients43 = cProto._readyClients;
  5126.               cProto._readyClients = function () {
  5127.                 let r = cProto._readyClients43.apply(this, arguments);
  5128.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  5129.                 return r;
  5130.               }
  5131.  
  5132.               console.log("_readyClients - OK");
  5133.  
  5134.             } else {
  5135.               console.log("_readyClients - NG");
  5136.  
  5137.             }
  5138.  
  5139.             if (typeof cProto.show === 'function' && !cProto.show17) {
  5140.               cProto.show17 = cProto.show;
  5141.               cProto.show = function () {
  5142.  
  5143.                 let r = this.show17.apply(this, arguments);
  5144.                 this._showing === true && Promise.resolve().then(() => {
  5145.                   const tooltip = (this.$ || 0).tooltip;
  5146.  
  5147.                   if (tooltip && tooltip.firstElementChild === null) {
  5148.                     let text = tooltip.textContent;
  5149.                     if (typeof text === 'string' && text.length >= 2) {
  5150.                       tooltip.textContent = text.trim();
  5151.                     }
  5152.                   }
  5153.                 }).catch(console.warn)
  5154.                 return r;
  5155.               }
  5156.  
  5157.               console.log("trim tooltip content - OK");
  5158.  
  5159.             } else {
  5160.               console.log("trim tooltip content - NG");
  5161.  
  5162.             }
  5163.  
  5164.  
  5165.  
  5166.           })();
  5167.  
  5168.           console.log("[End]");
  5169.  
  5170.           console.groupEnd();
  5171.  
  5172.         }).catch(console.warn);
  5173.  
  5174.  
  5175.  
  5176.       }
  5177.  
  5178.  
  5179.  
  5180.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  5181.  
  5182.  
  5183.         const hookDocumentMouseDownSetupFn = () => {
  5184.  
  5185.  
  5186.  
  5187.           let muzTimestamp = 0;
  5188.           let nszDropdown = null;
  5189.  
  5190.  
  5191.  
  5192.           const handlerObject = {
  5193.  
  5194.             // mdHandler282 : function (evt) {
  5195.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5196.             //   if (!evt || !evt.isTrusted) return;
  5197.             //   muzTimestamp = 0;
  5198.             //   nszDropdown = null;
  5199.  
  5200.             //   const hostElement = this.hostElement || this;
  5201.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  5202.             //   if (!hostElement.contains(evt.target)) return;
  5203.             //   let targetDropDown = null;
  5204.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  5205.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  5206.             //       targetDropDown = dropdown;
  5207.             //     }
  5208.             //   }
  5209.             //   if ((nszDropdown = targetDropDown)) {
  5210.             //     muzTimestamp = Date.now();
  5211.             //     evt.stopImmediatePropagation();
  5212.             //     evt.stopPropagation();
  5213.             //   }
  5214.  
  5215.             // },
  5216.  
  5217.  
  5218.             muHandler282: function (evt) {
  5219.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5220.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5221.               const dropdown = nszDropdown;
  5222.               muzTimestamp = 0;
  5223.               nszDropdown = null;
  5224.  
  5225.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  5226.               const hostElement = kurMPC.hostElement || kurMPC;
  5227.               if (!hostElement.hasAttribute('menu-visible')) return;
  5228.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  5229.  
  5230.  
  5231.                 /*
  5232.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5233.                 if(parentButton) return;
  5234.                 */
  5235.  
  5236.                 muzTimestamp = Date.now();
  5237.                 evt.stopImmediatePropagation();
  5238.                 evt.stopPropagation();
  5239.                 Promise.resolve(dropdown).then((dropdown) => {
  5240.                   dropdown.cancel();
  5241.                 });
  5242.                 // document.body.click();
  5243.               }
  5244.  
  5245.             },
  5246.  
  5247.             mlHandler282: function (evt) {
  5248.               muzTimestamp = 0;
  5249.               nszDropdown = null;
  5250.             },
  5251.  
  5252.             ckHandler282: function (evt) {
  5253.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5254.  
  5255.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5256.               if (Date.now() - muzTimestamp < 40) {
  5257.  
  5258.                 /*
  5259.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5260.                 if(parentButton) return;
  5261.                 */
  5262.  
  5263.                 muzTimestamp = Date.now();
  5264.                 evt.stopImmediatePropagation();
  5265.                 evt.stopPropagation();
  5266.               }
  5267.  
  5268.             },
  5269.  
  5270.             tapHandler282: function (evt) {
  5271.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5272.  
  5273.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5274.               if (Date.now() - muzTimestamp < 40) {
  5275.  
  5276.                 /*
  5277.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5278.                 if(parentButton) return;
  5279.                 */
  5280.  
  5281.                 muzTimestamp = Date.now();
  5282.                 evt.stopImmediatePropagation();
  5283.                 evt.stopPropagation();
  5284.               }
  5285.  
  5286.             },
  5287.  
  5288.  
  5289.             handleEvent(evt) {
  5290.  
  5291.  
  5292.               if (evt) {
  5293.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  5294.                 const cnt = kurMPC.inst || kurMPC;
  5295.                 const hostElement = cnt.hostElement || cnt;
  5296.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  5297.                 switch (evt.type) {
  5298.                   // case 'mousedown':
  5299.                   // return this.mdHandler282.call(kurMPC, evt);
  5300.                   case 'mouseup':
  5301.                     return this.muHandler282(evt);
  5302.                   case 'mouseleave':
  5303.                     return this.mlHandler282(evt);
  5304.                   case 'tap':
  5305.                     return this.tapHandler282(evt);
  5306.                   case 'click':
  5307.                     return this.ckHandler282(evt);
  5308.                 }
  5309.               }
  5310.  
  5311.             }
  5312.  
  5313.  
  5314.  
  5315.           }
  5316.  
  5317.           document.addEventListener('mousedown', function (evt) {
  5318.  
  5319.             if (!evt || !evt.isTrusted || !evt.target) return;
  5320.  
  5321.  
  5322.  
  5323.             muzTimestamp = 0;
  5324.             nszDropdown = null;
  5325.  
  5326.             /*
  5327.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5328.             if(parentButton){
  5329.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  5330.               if(kurMPC){
  5331.                 evt.preventDefault();
  5332.                 evt.stopImmediatePropagation();
  5333.                 evt.stopPropagation();
  5334.               }
  5335.               return;
  5336.             }
  5337.             */
  5338.  
  5339.             /** @type {HTMLElement | null} */
  5340.             const kurMP = kRef(currentMenuPivotWR);
  5341.             if (!kurMP) return;
  5342.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  5343.  
  5344.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  5345.  
  5346.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  5347.  
  5348.  
  5349.             let targetDropDown = null;
  5350.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  5351.               if (dropdown && dropdown.positionTarget === kurMP) {
  5352.                 targetDropDown = dropdown;
  5353.               }
  5354.             }
  5355.  
  5356.             if (!targetDropDown) return;
  5357.  
  5358.  
  5359.             /*
  5360.             if (parentButton) {
  5361.               evt.preventDefault();
  5362.               evt.stopImmediatePropagation();
  5363.               evt.stopPropagation();
  5364.               currentMenuPivotWR = mWeakRef(kurMPC);
  5365.               return;
  5366.             } 
  5367.             */
  5368.  
  5369.             if ((nszDropdown = targetDropDown)) {
  5370.               muzTimestamp = Date.now();
  5371.               evt.stopImmediatePropagation();
  5372.               evt.stopPropagation();
  5373.               currentMenuPivotWR = mWeakRef(kurMPC);
  5374.  
  5375.               const listenOpts = { capture: true, passive: false, once: true };
  5376.  
  5377.               // remove unexcecuted eventHandler
  5378.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  5379.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  5380.               document.removeEventListener('tap', handlerObject, listenOpts);
  5381.               document.removeEventListener('click', handlerObject, listenOpts);
  5382.  
  5383.               // inject one time eventHandler to by pass events
  5384.               document.addEventListener('mouseup', handlerObject, listenOpts);
  5385.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  5386.               document.addEventListener('tap', handlerObject, listenOpts);
  5387.               document.addEventListener('click', handlerObject, listenOpts);
  5388.  
  5389.             }
  5390.  
  5391.           }, true);
  5392.  
  5393.         }
  5394.  
  5395.  
  5396.         // yt-live-chat-paid-message-renderer ??
  5397.  
  5398.         /*
  5399.         
  5400.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  5401.         
  5402.         
  5403.         "yt-live-chat-ticker-paid-message-item-renderer"
  5404.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  5405.         "yt-live-chat-paid-message-renderer"
  5406.         "yt-live-chat-text-message-renderer"
  5407.         "yt-live-chat-paid-sticker-renderer"
  5408.         
  5409.         */
  5410.  
  5411.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  5412.         customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  5413.  
  5414.  
  5415.           mightFirstCheckOnYtInit();
  5416.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-text-message-renderer hacks");
  5417.           console.log("[Begin]");
  5418.           (() => {
  5419.  
  5420.             const tag = "yt-live-chat-text-message-renderer"
  5421.             const dummy = document.createElement(tag);
  5422.  
  5423.             const cProto = getProto(dummy);
  5424.             if (!cProto || !cProto.attached) {
  5425.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5426.               return;
  5427.             }
  5428.  
  5429.             /*
  5430.  
  5431.  
  5432.  
  5433.                 remarks:
  5434.  
  5435.                 const w=new Set();
  5436.                 setInterval(()=>{
  5437.                 for(const a of document.getElementsByTagName('*')) if(a.shouldSupportWholeItemClick) w.add(a.is||'');
  5438.                 console.log([...w.keys()]);
  5439.                 },800);
  5440.  
  5441.  
  5442.                 [
  5443.                 "yt-live-chat-ticker-sponsor-item-renderer",
  5444.                 "yt-live-chat-banner-header-renderer",
  5445.                 "yt-live-chat-text-message-renderer",
  5446.                 "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5447.                 "ytd-sponsorships-live-chat-header-renderer",
  5448.                 "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer"
  5449.                 ]
  5450.  
  5451.             */
  5452.  
  5453.             cProto.isClickableChatRow111 = function () {
  5454.               return (
  5455.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  5456.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  5457.               ); // follow .onItemTap(a)
  5458.             }
  5459.  
  5460.  
  5461.  
  5462.             const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  5463.  
  5464.             if (toHookDocumentMouseDown) {
  5465.  
  5466.               hookDocumentMouseDownSetupFn();
  5467.  
  5468.  
  5469.               console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  5470.  
  5471.  
  5472.  
  5473.             } else {
  5474.  
  5475.               console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent NG");
  5476.  
  5477.             }
  5478.  
  5479.  
  5480.  
  5481.  
  5482.           })();
  5483.  
  5484.           console.log("[End]");
  5485.  
  5486.           console.groupEnd();
  5487.  
  5488.         }).catch(console.warn);
  5489.  
  5490.  
  5491.       }
  5492.  
  5493.  
  5494.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  5495.  
  5496.         document.addEventListener('mousedown', function (evt) {
  5497.  
  5498.           const maxloopDOMTreeElements = 4;
  5499.           const maxloopYtCompontents = 4;
  5500.           let j1 = 0;
  5501.           let j2 = 0;
  5502.           let target = (evt || 0).target || 0;
  5503.           if (!target) return;
  5504.  
  5505.  
  5506.           while (target instanceof HTMLElement) {
  5507.             if (++j1 > maxloopDOMTreeElements) break;
  5508.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') break;
  5509.             target = nodeParent(target);
  5510.           }
  5511.           const components = [];
  5512.           while (target instanceof HTMLElement) {
  5513.             if (++j2 > maxloopYtCompontents) break;
  5514.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') {
  5515.               components.push(target);
  5516.             }
  5517.             if (typeof (target.inst || target).showContextMenu === 'function') break;
  5518.             target = target.parentComponent || (target.inst || 0).parentComponent || null;
  5519.           }
  5520.           if (!(target instanceof HTMLElement)) return;
  5521.           const targetCnt = target.inst || target;
  5522.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  5523.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  5524.             return;
  5525.           }
  5526.  
  5527.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  5528.           if (!endpoint) return;
  5529.           if (targetCnt.opened || !targetCnt.isAttached) return;
  5530.  
  5531.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  5532.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  5533.           }
  5534.  
  5535.           let doPreRequest = false;
  5536.           if (components.length >= 2 && components[0].id === 'menu-button' && (target.$ || 0)['menu-button'] === components[0]) {
  5537.             doPreRequest = true;
  5538.           } else if (components.length === 1 && components[0] === target) {
  5539.             doPreRequest = true;
  5540.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (target.$ || 0)['author-photo'] === components[0]) {
  5541.             doPreRequest = true;
  5542.           }
  5543.           if (doPreRequest === false) {
  5544.             console.log('doPreRequest = fasle on showContextMenu', components);
  5545.             return;
  5546.           }
  5547.  
  5548.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function') return;
  5549.           if (targetCnt.__getCachedEndpointData__(endpoint)) return;
  5550.  
  5551.           if (!targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  5552.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  5553.             return;
  5554.           }
  5555.  
  5556.  
  5557.           const onSuccess = (a) => {
  5558.             /*
  5559.  
  5560.               dQ() && (a = a.response);
  5561.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  5562.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  5563.  
  5564.             */
  5565.  
  5566.             a = a.response || a;
  5567.  
  5568.             if (!a) {
  5569.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  5570.               return;
  5571.             }
  5572.  
  5573.             let z = null;
  5574.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  5575.  
  5576.             if (z) {
  5577.               a = z;
  5578.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  5579.             }
  5580.  
  5581.           };
  5582.           const onFailure = (a) => {
  5583.  
  5584.             /*
  5585.  
  5586.               if (a instanceof Error || a instanceof Object || a instanceof String)
  5587.                   var b = a;
  5588.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  5589.  
  5590.             */
  5591.  
  5592.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  5593.             // console.log('onFailure', a)
  5594.  
  5595.           };
  5596.  
  5597.           if (doPreRequest) {
  5598.  
  5599.             let propertyCounter = 0;
  5600.             let p1unlock = null;
  5601.             const p1 = new Promise(r => {
  5602.               p1unlock = r;
  5603.             });
  5604.             const p1Timeout = 800;
  5605.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  5606.  
  5607.             try {
  5608.  
  5609.               const onSuccessHelperFn = function () {
  5610.                 p1unlock && p1unlock();
  5611.                 p1unlock = null;
  5612.                 if (propertyCounter !== 5) {
  5613.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  5614.                   return;
  5615.                 }
  5616.                 if (this[proxyKey] !== targetCnt) {
  5617.                   console.log('Error in prerequest for showContextMenu.this');
  5618.                   return;
  5619.                 }
  5620.                 onSuccess(...arguments);
  5621.               };
  5622.               const onFailureHelperFn = function () {
  5623.                 p1unlock && p1unlock();
  5624.                 p1unlock = null;
  5625.                 if (propertyCounter !== 5) {
  5626.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  5627.                   return;
  5628.                 }
  5629.                 if (this[proxyKey] !== targetCnt) {
  5630.                   console.log('Error in prerequest for showContextMenu.this');
  5631.                   return;
  5632.                 }
  5633.                 onFailure(...arguments);
  5634.  
  5635.               }
  5636.               const fakeTargetCnt = new Proxy({
  5637.                 __showContextMenu_forceNativeRequest__: 1,
  5638.                 __showContextMenu_sync_mode_request__: 1,
  5639.                 get handleGetContextMenuResponse_() {
  5640.                   propertyCounter += 2;
  5641.                   return onSuccessHelperFn;
  5642.                 },
  5643.                 get handleGetContextMenuError() {
  5644.                   propertyCounter += 3;
  5645.                   return onFailureHelperFn;
  5646.                 }
  5647.               }, {
  5648.                 get(_, key, receiver) {
  5649.                   if (key in _) return _[key];
  5650.                   if (key === proxyKey) return targetCnt;
  5651.  
  5652.                   let giveNative = false;
  5653.                   if (key in targetCnt) {
  5654.                     if (key === 'data') giveNative = true;
  5655.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  5656.                   }
  5657.                   if (giveNative) return targetCnt[key];
  5658.                 }
  5659.               });
  5660.  
  5661.               const fakeEvent = (() => {
  5662.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  5663.                 const nf = function () { }
  5664.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  5665.  
  5666.                 return {
  5667.                   type: 'tap',
  5668.                   eventPhase: 0,
  5669.                   isTrusted: false,
  5670.                   __composed: true,
  5671.                   bubbles, cancelable, cancelBubble, timeStamp,
  5672.                   target, srcElement, defaultPrevented, currentTarget, composed,
  5673.                   stopPropagation, stopImmediatePropagation, preventDefault
  5674.                 };
  5675.               })(evt);
  5676.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  5677.  
  5678.  
  5679.             } catch (e) {
  5680.               console.warn(e);
  5681.               propertyCounter = 7;
  5682.  
  5683.             }
  5684.             if (propertyCounter !== 5) {
  5685.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  5686.               return;
  5687.             }
  5688.             targetCnt.__showContextMenu_assign_lock__(p1);
  5689.             setTimeout(() => {
  5690.               p1unlock && p1unlock();
  5691.               p1unlock = null;
  5692.             }, p1Timeout);
  5693.           }
  5694.  
  5695.  
  5696.  
  5697.  
  5698.  
  5699.  
  5700.         }, true);
  5701.  
  5702.  
  5703.       }
  5704.  
  5705.  
  5706.  
  5707.       /*
  5708.  
  5709.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  5710.  
  5711.       */
  5712.  
  5713.       let pTags = [];
  5714.       const sTags = [
  5715.         "yt-live-chat-ticker-sponsor-item-renderer",
  5716.         "yt-live-chat-banner-header-renderer",
  5717.         "yt-live-chat-text-message-renderer",
  5718.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5719.         "ytd-sponsorships-live-chat-header-renderer",
  5720.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer"
  5721.       ];
  5722.  
  5723.       for (const tag of sTags) {
  5724.         pTags.push(customElements.whenDefined(tag));
  5725.       }
  5726.  
  5727.  
  5728.       Promise.all(pTags).then(() => {
  5729.  
  5730.  
  5731.         mightFirstCheckOnYtInit();
  5732.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  5733.         console.log("[Begin]");
  5734.  
  5735.         for (const tag of sTags) {
  5736.  
  5737.  
  5738.  
  5739.           (() => {
  5740.  
  5741.             const dummy = document.createElement(tag);
  5742.  
  5743.             const cProto = getProto(dummy);
  5744.             if (!cProto || !cProto.attached) {
  5745.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5746.               return;
  5747.             }
  5748.  
  5749.  
  5750.  
  5751.  
  5752.             if (CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN && typeof cProto.showContextMenu === 'function' && typeof cProto.showContextMenu_ === 'function' && !cProto.showContextMenu37 && !cProto.showContextMenu37_ && cProto.showContextMenu.length === 1 && cProto.showContextMenu_.length === 1) {
  5753.  
  5754.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  5755.               cProto.showContextMenu37 = cProto.showContextMenu;
  5756.  
  5757.               function deepCopy(obj, skipKeys) {
  5758.                 skipKeys = skipKeys || [];
  5759.                 if (!obj || typeof obj !== 'object') return obj;
  5760.                 if (Array.isArray(obj)) {
  5761.                   return obj.map(item => deepCopy(item, skipKeys));
  5762.                 }
  5763.                 const copy = {};
  5764.                 for (let key in obj) {
  5765.                   if (!skipKeys.includes(key)) {
  5766.                     copy[key] = deepCopy(obj[key], skipKeys);
  5767.                   }
  5768.                 }
  5769.                 return copy;
  5770.               }
  5771.  
  5772.               /*
  5773.               const wm37 = new WeakMap();
  5774.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  5775.               cProto.__cacheResolvedEndpointData__ = (endpoint, a, doDeepCopy) => {
  5776.                 if (a) {
  5777.                   if (doDeepCopy) a = deepCopy(a);
  5778.                   wm37.set(endpoint, a);
  5779.                 } else {
  5780.                   wm37.remove(endpoint);
  5781.                 }
  5782.               }
  5783.               cProto.__showContextMenuNetworkRequestMutex__ = null;
  5784.               cProto.__showContextMenuNetworkRequestMutexResolve__  = null;
  5785.               cProto.showContextMenu = function (a) {
  5786.                 if(this.__showContextMenu_forceNativeRequest__){
  5787.                   return this.showContextMenu37(a);
  5788.                 }
  5789.                 const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5790.                 if (!endpoint) {
  5791.                   return this.showContextMenu37(a);
  5792.                 }
  5793.                 this.__showContextMenuNetworkRequestMutex__ = (this.__showContextMenuNetworkRequestMutex__ || Promise.resolve())
  5794.                 .then(()=>new Promise(lockResolve=>{
  5795.  
  5796.                   if (endpoint !== (this.data || 0).contextMenuEndpoint || 0){
  5797.                     lockResolve();
  5798.                     return;
  5799.                   }
  5800.  
  5801.                   if (endpoint) {
  5802.                     let resolvedEndpoint = wm37.get(endpoint);
  5803.                     if (resolvedEndpoint) {
  5804.                       resolvedEndpoint = deepCopy(resolvedEndpoint);
  5805.                       // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  5806.                       Promise.resolve(resolvedEndpoint).then(() => {
  5807.                         this.showContextMenu37_(resolvedEndpoint);
  5808.                       });
  5809.                       lockResolve();
  5810.                       return;
  5811.                       //this.showContextMenu37_(JSON.parse(JSON.stringify(a)));
  5812.                       //return;
  5813.                     }
  5814.  
  5815.                     this.__showContextMenuNetworkRequestMutexResolve__ = new Promise(resolve=>{
  5816.                       this.__showContextMenuNetworkRequestMutexResolve__ = resolve;
  5817.  
  5818.                     }).then((a)=>{
  5819.  
  5820.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5821.                   if (endpoint) {
  5822.                     const f = this.__cacheResolvedEndpointData__
  5823.                     if (typeof f === 'function') f(endpoint, a, true);
  5824.                   }
  5825.                    this.showContextMenu37_(a);
  5826.                    lockResolve();
  5827.  
  5828.                     }).catch(console.warn)
  5829.  
  5830.                   }else{
  5831.  
  5832.                     this.__showContextMenuNetworkRequestMutexResolve__ = null;
  5833.                     this.showContextMenu37(a);
  5834.                     lockResolve();
  5835.                   }
  5836.  
  5837.  
  5838.  
  5839.  
  5840.                 })).catch(console.warn);
  5841.               }
  5842.  
  5843.               cProto.showContextMenu_ = function (a) {
  5844.  
  5845.                 let resolve = this.__showContextMenuNetworkRequestMutexResolve__;
  5846.                 this.__showContextMenuNetworkRequestMutexResolve__= null;
  5847.  
  5848.                 if (resolve) {
  5849.                   resolve(a);
  5850.                 } else {
  5851.                   return this.showContextMenu37_(a);
  5852.                 }
  5853.  
  5854.               }
  5855.               */
  5856.  
  5857.  
  5858.               const wm37 = new WeakMap();
  5859.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  5860.               cProto.__cacheResolvedEndpointData__ = (endpoint, a, doDeepCopy) => {
  5861.                 if (a) {
  5862.                   if (doDeepCopy) a = deepCopy(a);
  5863.                   wm37.set(endpoint, a);
  5864.                 } else {
  5865.                   wm37.remove(endpoint);
  5866.                 }
  5867.               }
  5868.               cProto.__getCachedEndpointData__ = function (endpoint) {
  5869.                 endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  5870.                 if (endpoint) return wm37.get(endpoint);
  5871.                 return null;
  5872.               }
  5873.               cProto.__showCachedContextMenu__ = function (resolvedEndpoint) { // non-null
  5874.  
  5875.                 resolvedEndpoint = deepCopy(resolvedEndpoint);
  5876.                 // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  5877.                 Promise.resolve(resolvedEndpoint).then(() => {
  5878.                   this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  5879.                   this.showContextMenu_(resolvedEndpoint);
  5880.                   this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  5881.                 });
  5882.  
  5883.  
  5884.  
  5885.               }
  5886.               cProto.showContextMenu = function (a) {
  5887.                 if (!this.__showContextMenu_forceNativeRequest__) {
  5888.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5889.                   if (endpoint) {
  5890.                     const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  5891.                     if (resolvedEndpoint) {
  5892.                       this.__showCachedContextMenu__(resolvedEndpoint);
  5893.                       return;
  5894.                     }
  5895.                   }
  5896.                 }
  5897.                 return this.showContextMenu37(a);
  5898.               }
  5899.  
  5900.               cProto.showContextMenu_ = function (a) {
  5901.                 if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  5902.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5903.                   if (endpoint) {
  5904.                     const f = this.__cacheResolvedEndpointData__;
  5905.                     if (typeof f === 'function') f(endpoint, a, true);
  5906.                   }
  5907.                 }
  5908.                 return this.showContextMenu37_(a);
  5909.               }
  5910.  
  5911.  
  5912.  
  5913.  
  5914.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  5915.  
  5916.  
  5917.  
  5918.             } else {
  5919.  
  5920.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN -  NG", tag);
  5921.  
  5922.             }
  5923.  
  5924.  
  5925.  
  5926.             if (ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU && typeof cProto.showContextMenu === 'function' && typeof cProto.showContextMenu_ === 'function' && !cProto.showContextMenu48 && !cProto.showContextMenu48_ && cProto.showContextMenu.length === 1 && cProto.showContextMenu_.length === 1) {
  5927.  
  5928.  
  5929.               cProto.showContextMenu48 = cProto.showContextMenu;
  5930.  
  5931.  
  5932.               cProto.showContextMenu = function (a) {
  5933.  
  5934.                 const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5935.                 if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  5936.  
  5937.                   const parentComponent = this.parentComponent;
  5938.                   if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  5939.                     parentComponent.allowScroll = false;
  5940.                   }
  5941.                 }
  5942.  
  5943.                 return this.showContextMenu48.apply(this, arguments);
  5944.  
  5945.               }
  5946.  
  5947.  
  5948.  
  5949.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  5950.  
  5951.  
  5952.  
  5953.             } else {
  5954.  
  5955.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU -  NG", tag);
  5956.  
  5957.             }
  5958.  
  5959.  
  5960.  
  5961.  
  5962.  
  5963.             if (ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU && typeof cProto.showContextMenu === 'function' && typeof cProto.showContextMenu_ === 'function' && !cProto.showContextMenu47 && !cProto.showContextMenu47_ && cProto.showContextMenu.length === 1 && cProto.showContextMenu_.length === 1) {
  5964.  
  5965.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  5966.               cProto.showContextMenu47 = cProto.showContextMenu;
  5967.  
  5968.               const mutex = new Mutex();
  5969.               let __showContextMenu_mutex_unlock__ = null;
  5970.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = () => {
  5971.                 return __showContextMenu_mutex_unlock__ === null;
  5972.               }
  5973.               cProto.__showContextMenu_assign_lock__ = function (p) {
  5974.  
  5975.  
  5976.                 mutex.lockWith(unlock => {
  5977.                   p.then(unlock);
  5978.                 });
  5979.  
  5980.               }
  5981.               let lastShowMenuTarget = null;
  5982.               cProto.showContextMenu = function (a) {
  5983.                 lastShowMenuTarget = this;
  5984.  
  5985.                 if (this.__showContextMenu_sync_mode_request__) {
  5986.  
  5987.                   return this.showContextMenu47(a);
  5988.                 } else {
  5989.  
  5990.  
  5991.                   mutex.lockWith(unlock => {
  5992.                     if (lastShowMenuTarget !== this) {
  5993.                       unlock();
  5994.                       return;
  5995.                     }
  5996.  
  5997.                     setTimeout(unlock, 800); // in case network failure
  5998.                     __showContextMenu_mutex_unlock__ = unlock;
  5999.                     try {
  6000.                       this.showContextMenu47(a);
  6001.                     } catch (e) {
  6002.                       console.warn(e);
  6003.                       unlock(); // in case function script error
  6004.                     }
  6005.  
  6006.                   });
  6007.  
  6008.                 }
  6009.  
  6010.  
  6011.               }
  6012.  
  6013.  
  6014.               cProto.showContextMenu_ = function (a) {
  6015.  
  6016.                 if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  6017.                   __showContextMenu_mutex_unlock__();
  6018.                   __showContextMenu_mutex_unlock__ = null;
  6019.                 }
  6020.                 return this.showContextMenu47_(a);
  6021.  
  6022.               }
  6023.  
  6024.               /*
  6025.               const wm37 = new WeakMap();
  6026.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  6027.               cProto.__cacheResolvedEndpointData__ = (endpoint, a, doDeepCopy) => {
  6028.                 if (a) {
  6029.                   if (doDeepCopy) a = deepCopy(a);
  6030.                   wm37.set(endpoint, a);
  6031.                 } else {
  6032.                   wm37.remove(endpoint);
  6033.                 }
  6034.               }
  6035.               cProto.__showContextMenuNetworkRequestMutex__ = null;
  6036.               cProto.__showContextMenuNetworkRequestMutexResolve__  = null;
  6037.               cProto.showContextMenu = function (a) {
  6038.                 if(this.__showContextMenu_forceNativeRequest__){
  6039.                   return this.showContextMenu37(a);
  6040.                 }
  6041.                 const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6042.                 if (!endpoint) {
  6043.                   return this.showContextMenu37(a);
  6044.                 }
  6045.                 this.__showContextMenuNetworkRequestMutex__ = (this.__showContextMenuNetworkRequestMutex__ || Promise.resolve())
  6046.                 .then(()=>new Promise(lockResolve=>{
  6047.  
  6048.                   if (endpoint !== (this.data || 0).contextMenuEndpoint || 0){
  6049.                     lockResolve();
  6050.                     return;
  6051.                   }
  6052.  
  6053.                   if (endpoint) {
  6054.                     let resolvedEndpoint = wm37.get(endpoint);
  6055.                     if (resolvedEndpoint) {
  6056.                       resolvedEndpoint = deepCopy(resolvedEndpoint);
  6057.                       // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  6058.                       Promise.resolve(resolvedEndpoint).then(() => {
  6059.                         this.showContextMenu37_(resolvedEndpoint);
  6060.                       });
  6061.                       lockResolve();
  6062.                       return;
  6063.                       //this.showContextMenu37_(JSON.parse(JSON.stringify(a)));
  6064.                       //return;
  6065.                     }
  6066.  
  6067.                     this.__showContextMenuNetworkRequestMutexResolve__ = new Promise(resolve=>{
  6068.                       this.__showContextMenuNetworkRequestMutexResolve__ = resolve;
  6069.  
  6070.                     }).then((a)=>{
  6071.  
  6072.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6073.                   if (endpoint) {
  6074.                     const f = this.__cacheResolvedEndpointData__
  6075.                     if (typeof f === 'function') f(endpoint, a, true);
  6076.                   }
  6077.                    this.showContextMenu37_(a);
  6078.                    lockResolve();
  6079.  
  6080.                     }).catch(console.warn)
  6081.  
  6082.                   }else{
  6083.  
  6084.                     this.__showContextMenuNetworkRequestMutexResolve__ = null;
  6085.                     this.showContextMenu37(a);
  6086.                     lockResolve();
  6087.                   }
  6088.  
  6089.  
  6090.  
  6091.  
  6092.                 })).catch(console.warn);
  6093.               }
  6094.  
  6095.               cProto.showContextMenu_ = function (a) {
  6096.  
  6097.                 let resolve = this.__showContextMenuNetworkRequestMutexResolve__;
  6098.                 this.__showContextMenuNetworkRequestMutexResolve__= null;
  6099.  
  6100.                 if (resolve) {
  6101.                   resolve(a);
  6102.                 } else {
  6103.                   return this.showContextMenu37_(a);
  6104.                 }
  6105.  
  6106.               }
  6107.               */
  6108.  
  6109.  
  6110.  
  6111.  
  6112.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6113.  
  6114.  
  6115.  
  6116.             } else {
  6117.  
  6118.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU -  NG", tag);
  6119.  
  6120.             }
  6121.  
  6122.  
  6123.  
  6124.  
  6125.           })();
  6126.  
  6127.         }
  6128.  
  6129.  
  6130.  
  6131.         console.log("[End]");
  6132.  
  6133.         console.groupEnd();
  6134.  
  6135.       }).catch(console.warn);
  6136.  
  6137.  
  6138.  
  6139.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  6140.  
  6141.         mightFirstCheckOnYtInit();
  6142.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  6143.         console.log("[Begin]");
  6144.         (() => {
  6145.  
  6146.           const tag = "tp-yt-iron-dropdown";
  6147.           const dummy = document.createElement(tag);
  6148.  
  6149.           const cProto = getProto(dummy);
  6150.           if (!cProto || !cProto.attached) {
  6151.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6152.             return;
  6153.           }
  6154.  
  6155.  
  6156.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  6157.             cProto.__deraf_hn__ = function (sId, fn) {
  6158.               const rhKey = `_rafHandler_${sId}`;
  6159.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  6160.               if (m.has(fn)) return m.get(fn);
  6161.               const resFn = () => {
  6162.                 this.__rafs[sId] = null;
  6163.                 fn.call(this)
  6164.               };
  6165.               m.set(fn, resFn);
  6166.               m.set(resFn, resFn);
  6167.               return resFn;
  6168.             };
  6169.             cProto.__deraf34 = cProto.__deraf;
  6170.             cProto.__deraf = function (a, b) { // sId, fn
  6171.               let c = this.__rafs;
  6172.               null !== c[a] && cancelAnimationFrame(c[a]);
  6173.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  6174.             };
  6175.             console.log("USE_VANILLA_DEREF - OK");
  6176.           } else {
  6177.             console.log("USE_VANILLA_DEREF - NG");
  6178.           }
  6179.  
  6180.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  6181.             cProto.__deraf66 = cProto.__deraf;
  6182.             cProto.__deraf = function (sId, fn) {
  6183.               if (this.__byPassRAF__) {
  6184.                 Promise.resolve().then(() => {
  6185.                   fn.call(this);
  6186.                 });
  6187.               }
  6188.               let r = this.__deraf66.apply(this, arguments);
  6189.               return r;
  6190.             }
  6191.             console.log("FIX_DROPDOWN_DERAF - OK");
  6192.           } else {
  6193.             console.log("FIX_DROPDOWN_DERAF - NG");
  6194.           }
  6195.  
  6196.  
  6197.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  6198.  
  6199.             let lastClose = null;
  6200.             let lastOpen = null;
  6201.             let cid = 0;
  6202.  
  6203.             cProto.__mtChanged__ = function (b) {
  6204.  
  6205.               Promise.resolve().then(() => {
  6206.                 this._applyFocus();
  6207.               }).then(() => {
  6208.                 b ? this._renderOpened() : this._renderClosed();
  6209.               }).catch(console.warn);
  6210.  
  6211.             };
  6212.  
  6213.             const __moChanged__ = () => {
  6214.               if (!cid) return;
  6215.               // console.log(553, !!lastOpen, !!lastClose);
  6216.               cid = 0;
  6217.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  6218.                 lastOpen.__mtChanged__(1)
  6219.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  6220.                 lastClose.__mtChanged__(0);
  6221.               }
  6222.               lastOpen = null;
  6223.               lastClose = null;
  6224.             };
  6225.  
  6226.  
  6227.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  6228.               cProto._openedChanged66 = cProto._openedChanged;
  6229.               cProto._openedChanged = function () {
  6230.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  6231.                 this.__byPassRAF__ = true;
  6232.                 let r = this._openedChanged66.apply(this, arguments);
  6233.                 this.__byPassRAF__ = false;
  6234.                 return r;
  6235.               }
  6236.             }
  6237.  
  6238.             const pSetGet = (key, pdThis, pdBase) => {
  6239.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  6240.               return {
  6241.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  6242.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  6243.               };
  6244.             };
  6245.  
  6246.             cProto.__modifiedMenuPropsFn__ = function () {
  6247.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  6248.               const pdBase = Object.getOwnPropertyDescriptors(this)
  6249.  
  6250.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  6251.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  6252.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  6253.  
  6254.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  6255.                 console.warn('there is setter/getter for autoFitOnAttach');
  6256.                 return;
  6257.               }
  6258.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  6259.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  6260.                 return;
  6261.               }
  6262.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  6263.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  6264.                 return;
  6265.               }
  6266.  
  6267.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  6268.  
  6269.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  6270.  
  6271.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  6272.  
  6273.               Object.defineProperties(this, {
  6274.                 autoFitOnAttach: {
  6275.                   get() {
  6276.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6277.                     return autoFitOnAttach;
  6278.                   },
  6279.                   set(nv) {
  6280.                     autoFitOnAttach = nv;
  6281.                     return true;
  6282.                   },
  6283.                   enumerable: true,
  6284.                   configurable: true
  6285.                 }, expandSizingTargetForScrollbars: {
  6286.                   get() {
  6287.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6288.                     return expandSizingTargetForScrollbars;
  6289.                   },
  6290.                   set(nv) {
  6291.                     expandSizingTargetForScrollbars = nv;
  6292.                     return true;
  6293.                   },
  6294.                   enumerable: true,
  6295.                   configurable: true
  6296.                 }, allowOutsideScroll: {
  6297.                   get() {
  6298.                     if (this._modifiedMenuPropOn062__) return true;
  6299.                     return allowOutsideScroll;
  6300.                   },
  6301.                   set(nv) {
  6302.                     allowOutsideScroll = nv;
  6303.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  6304.                     return true;
  6305.                   },
  6306.                   enumerable: true,
  6307.                   configurable: true
  6308.                 }
  6309.               })
  6310.             };
  6311.  
  6312.             /*
  6313.                // ***** position() to be changed. *****
  6314.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  6315.  
  6316.                   overflow: visible !important;
  6317.                   min-width: max-content !important;
  6318.                   max-width: max-content !important;
  6319.                   max-height: max-content !important;
  6320.                   min-height: max-content !important;
  6321.                   white-space: nowrap;
  6322.               }
  6323.  
  6324.             */
  6325.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  6326.  
  6327.               let m34 = 0;
  6328.               cProto.__refitByPosition__ = function () {
  6329.                 m34++;
  6330.                 if (m34 <= 0) m34 = 0;
  6331.                 if (m34 !== 1) return;
  6332.                 const hostElement = this.hostElement || this;
  6333.                 if (document.visibilityState === 'visible') {
  6334.                   const sizingTarget = this.sizingTarget;
  6335.                   if (!sizingTarget) {
  6336.                     m34 = 0;
  6337.                     return;
  6338.                   }
  6339.  
  6340.                   /*
  6341.                   let useVisibilityCollapse = true;
  6342.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  6343.                     useVisibilityCollapse = false;
  6344.                   }
  6345.  
  6346.                   if (useVisibilityCollapse) {
  6347.                     hostElement.style.visibility = 'collapse';
  6348.                     sizingTarget.style.visibility = 'collapse';
  6349.                   } else {
  6350.                     hostElement.setAttribute('rNgzQ', '');
  6351.                     sizingTarget.setAttribute('rNgzQ', '');
  6352.                   }
  6353.                   */
  6354.                   hostElement.setAttribute('rNgzQ', '');
  6355.                   sizingTarget.setAttribute('rNgzQ', '');
  6356.  
  6357.                   const gn = () => {
  6358.                     /*
  6359.                     if (useVisibilityCollapse) {
  6360.                       hostElement.style.visibility = '';
  6361.                       sizingTarget.style.visibility = '';
  6362.                     } else {
  6363.                       hostElement.removeAttribute('rNgzQ');
  6364.                       sizingTarget.removeAttribute('rNgzQ');
  6365.                     }
  6366.                     */
  6367.                     hostElement.removeAttribute('rNgzQ');
  6368.                     sizingTarget.removeAttribute('rNgzQ');
  6369.                   }
  6370.  
  6371.                   const an = async () => {
  6372.                     while (m34 >= 1) {
  6373.                       await renderReadyPn(sizingTarget);
  6374.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  6375.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  6376.                       }
  6377.                       m34--;
  6378.                     }
  6379.                     m34 = 0;
  6380.                     Promise.resolve().then(gn);
  6381.                   }
  6382.                   setTimeout(an, 4); // wait those resizing function calls
  6383.  
  6384.  
  6385.                 } else {
  6386.                   m34 = 0;
  6387.                 }
  6388.               }
  6389.               cProto.position34 = cProto.position
  6390.               cProto.position = function () {
  6391.                 if (this._positionInitialize_) {
  6392.                   this._positionInitialize_ = 0;
  6393.                   this.__refitByPosition__();
  6394.                 }
  6395.                 let r = cProto.position34.apply(this, arguments);
  6396.                 return r;
  6397.               }
  6398.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  6399.  
  6400.             } else {
  6401.  
  6402.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  6403.  
  6404.             }
  6405.  
  6406.  
  6407.  
  6408.             cProto.__openedChanged = function () {
  6409.               this._positionInitialize_ = 1;
  6410.               // this.removeAttribute('horizontal-align')
  6411.               // this.removeAttribute('vertical-align')
  6412.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  6413.                 this.__menuTypeCheck__ = true;
  6414.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  6415.                   this._modifiedMenuPropOn062__ = false;
  6416.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6417.                   // this.autoFitOnAttach = true;
  6418.                   // this.expandSizingTargetForScrollbars = true;
  6419.                   // this.allowOutsideScroll = true;
  6420.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  6421.                   this.__modifiedMenuPropsFn__();
  6422.                   // this.constrain= function(){}
  6423.                   // this.position= function(){}
  6424.  
  6425.                   // this.autoFitOnAttach = true;
  6426.                   // this.expandSizingTargetForScrollbars = true;
  6427.                   // this.allowOutsideScroll = true;
  6428.                 }
  6429.               }
  6430.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  6431.                 let newValue = null;
  6432.                 const positionTarget = this.positionTarget;
  6433.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  6434.                   if (this._modifiedMenuPropOn062__ === false) {
  6435.                     newValue = true;
  6436.                   }
  6437.                 } else if (this._modifiedMenuPropOn062__ === true) {
  6438.                   newValue = false;
  6439.                 }
  6440.                 if (newValue !== null) {
  6441.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  6442.                   this._modifiedMenuPropOn062__ = newValue;
  6443.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  6444.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  6445.                 }
  6446.               }
  6447.  
  6448.               if (this.opened) {
  6449.  
  6450.                 Promise.resolve().then(() => {
  6451.  
  6452.                   this._prepareRenderOpened();
  6453.                 }).then(() => {
  6454.                   this._manager.addOverlay(this);
  6455.                   if (this._manager._overlays.length === 1) {
  6456.                     lastOpen = this;
  6457.                     lastClose = null;
  6458.                   } else {
  6459.                     return 1;
  6460.                   }
  6461.                   // if (cid) {
  6462.                   //   clearTimeout(cid);
  6463.                   //   cid = -1;
  6464.                   //   this.__moChanged__();
  6465.                   //   cid = 0;
  6466.                   // } else {
  6467.                   //   cid = -1;
  6468.                   //   this.__moChanged__();
  6469.                   //   cid = 0;
  6470.                   // }
  6471.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6472.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6473.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6474.                   cid = cid || requestAnimationFrame(__moChanged__);
  6475.                 }).then((r) => {
  6476.  
  6477.                   if (r) this.__mtChanged__(1);
  6478.                 }).catch(console.warn);
  6479.  
  6480.               } else {
  6481.                 Promise.resolve().then(() => {
  6482.                   this._manager.removeOverlay(this);
  6483.                   if (this._manager._overlays.length === 0) {
  6484.                     lastClose = this;
  6485.                     lastOpen = null;
  6486.                   } else {
  6487.                     return 1;
  6488.                   }
  6489.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6490.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6491.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6492.                   cid = cid || requestAnimationFrame(__moChanged__);
  6493.                 }).then((r) => {
  6494.                   if (r) this.__mtChanged__(0);
  6495.                 }).catch(console.warn);
  6496.  
  6497.               }
  6498.  
  6499.             }
  6500.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  6501.  
  6502.           } else {
  6503.  
  6504.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  6505.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  6506.  
  6507.           }
  6508.  
  6509.  
  6510.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  6511.  
  6512.             cProto.__openedChanged82 = cProto.__openedChanged;
  6513.  
  6514.  
  6515.             cProto.__openedChanged = function () {
  6516.  
  6517.               // currentMenuPivotWR = null;
  6518.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  6519.  
  6520.  
  6521.  
  6522.               // if (this.opened && this.positionTarget) {
  6523.  
  6524.               //   const positionTarget = this.positionTarget;
  6525.               //   console.log(1480, '__openedChanged.B', positionTarget)
  6526.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  6527.  
  6528.               // }
  6529.  
  6530.               const positionTarget = this.positionTarget;
  6531.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  6532.               return this.__openedChanged82.apply(this, arguments);
  6533.             }
  6534.           }
  6535.  
  6536.  
  6537.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  6538.  
  6539.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  6540.  
  6541.           //   cProto.__onCaptureScroll = function(a){
  6542.  
  6543.           //     const q = true;
  6544.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  6545.  
  6546.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  6547.           //       async function af() {
  6548.           //         this.__isAnimating && this._finishRenderOpened();
  6549.           //         if (!this.opened) return;
  6550.           //         this.__restoreScrollPosition();
  6551.           //         await new Promise(r => requestAnimationFrame(r));
  6552.           //         if (!this.opened) return;
  6553.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6554.           //         if (!this.opened) return;
  6555.           //         this.__restoreScrollPosition();
  6556.           //         await new Promise(r => requestAnimationFrame(r));
  6557.           //         if (!this.opened) return;
  6558.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6559.           //         if (!this.opened) return;
  6560.           //         this.opened && !this.__isAnimating && this.refit();
  6561.           //       }
  6562.           //       Promise.resolve().then(af);
  6563.  
  6564.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  6565.           //     }else{
  6566.  
  6567.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  6568.  
  6569.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  6570.           //     }
  6571.           //   }
  6572.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  6573.           // }else{
  6574.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  6575.  
  6576.           // }
  6577.  
  6578.  
  6579.         })();
  6580.  
  6581.         console.log("[End]");
  6582.  
  6583.         console.groupEnd();
  6584.  
  6585.       }).catch(console.warn);
  6586.  
  6587.  
  6588.  
  6589.  
  6590.  
  6591.  
  6592.  
  6593.  
  6594.       /*
  6595.  
  6596.  
  6597.  
  6598.  
  6599.  
  6600.           var FU = function() {
  6601.               var a = this;
  6602.               this.nextHandle_ = 1;
  6603.               this.clients_ = {};
  6604.               this.JSC$10323_callbacks_ = {};
  6605.               this.unsubscribeAsyncHandles_ = {};
  6606.               this.subscribe = vl(function(b, c, d) {
  6607.                   var e = Geb(b);
  6608.                   if (e in a.clients_)
  6609.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  6610.                   else {
  6611.                       a: {
  6612.                           var h = Geb(b), l;
  6613.                           for (l in a.unsubscribeAsyncHandles_) {
  6614.                               var m = a.clients_[l];
  6615.                               if (m instanceof KO) {
  6616.                                   delete a.clients_[l];
  6617.                                   delete a.JSC$10323_callbacks_[l];
  6618.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  6619.                                   delete a.unsubscribeAsyncHandles_[l];
  6620.                                   i6a(m);
  6621.                                   m.objectId_ = new FQa(h);
  6622.                                   m.register();
  6623.                                   d = m;
  6624.                                   break a
  6625.                               }
  6626.                           }
  6627.                           d.objectSource = b.invalidationId.objectSource;
  6628.                           d.objectId = h;
  6629.                           if (b = b.webAuthConfigurationData)
  6630.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  6631.                               b.pageId && (d.pageId = b.pageId);
  6632.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  6633.                           d.register()
  6634.                       }
  6635.                       a.clients_[e] = d;
  6636.                       a.JSC$10323_callbacks_[e] = {}
  6637.                   }
  6638.                   d = a.nextHandle_++;
  6639.                   a.JSC$10323_callbacks_[e][d] = c;
  6640.                   return d
  6641.               })
  6642.           };
  6643.           FU.prototype.unsubscribe = function(a, b) {
  6644.               var c = Geb(a);
  6645.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  6646.               !this.JSC$10323_callbacks_[c].length)) {
  6647.                   var d = this.clients_[c];
  6648.                   b = Jq.run(function() {
  6649.                       ei(d);
  6650.                       delete this.clients_[c];
  6651.                       delete this.unsubscribeAsyncHandles_[c]
  6652.                   }
  6653.                   .bind(this));
  6654.                   this.unsubscribeAsyncHandles_[c] = b
  6655.               }
  6656.           }
  6657.           ;
  6658.  
  6659.  
  6660.       */
  6661.  
  6662.  
  6663.  
  6664.  
  6665.       const onManagerFound = (dummyManager) => {
  6666.         if (!dummyManager || typeof dummyManager !== 'object') return;
  6667.  
  6668.         const mgrProto = dummyManager.constructor.prototype;
  6669.  
  6670.         let keyCallbackStore = '';
  6671.         for (const [key, v] of Object.entries(dummyManager)) {
  6672.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  6673.         }
  6674.  
  6675.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  6676.  
  6677.         if (mgrProto.unsubscribe16) return;
  6678.  
  6679.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  6680.  
  6681.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  6682.         console.log("[Begin]");
  6683.  
  6684.  
  6685.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  6686.         const isEmptyObject = (obj) => {
  6687.           for (let key in obj) {
  6688.             if (obj.hasOwnProperty(key)) return false;
  6689.           }
  6690.           return true;
  6691.         }
  6692.  
  6693.         const idMapper = new Map();
  6694.  
  6695.         const convertId = function (objectId) {
  6696.           if (!objectId || typeof objectId !== 'string') return null;
  6697.  
  6698.           let result = idMapper.get(objectId)
  6699.           if (result) return result;
  6700.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  6701.           idMapper.set(objectId, result)
  6702.           return result;
  6703.         }
  6704.  
  6705.  
  6706.         const rafHandleHolder = [];
  6707.  
  6708.         let pzw = 0;
  6709.         let lza = 0;
  6710.         const rafHandlerFn = () => {
  6711.           pzw = 0;
  6712.           if (rafHandleHolder.length === 1) {
  6713.             const f = rafHandleHolder[0];
  6714.             rafHandleHolder.length = 0;
  6715.             f();
  6716.           } else if (rafHandleHolder.length > 1) {
  6717.             const arr = rafHandleHolder.slice(0);
  6718.             rafHandleHolder.length = 0;
  6719.             for (const fn of arr) fn();
  6720.           }
  6721.         };
  6722.  
  6723.  
  6724.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  6725.  
  6726.           const checkIntegrityForSubscribe = (mgr) => {
  6727.             if (mgr
  6728.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  6729.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  6730.  
  6731.               const ns = new Set(Object.keys(mgr));
  6732.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  6733.  
  6734.               if (ns.size >= 6 && ms.size >= 4) {
  6735.                 // including 'subscribe18'
  6736.                 // 'unsubscribe16', 'subscribe19'
  6737.  
  6738.                 let r = 0;
  6739.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  6740.                   r += ns.has(k) ? 1 : 0;
  6741.                 }
  6742.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  6743.                   r += ms.has(k) ? 1 : 0;
  6744.                 }
  6745.                 if (r === 10) {
  6746.                   const isObject = (c) => (c || 0).constructor === Object;
  6747.  
  6748.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  6749.  
  6750.                     return true;
  6751.                   }
  6752.  
  6753.  
  6754.                 }
  6755.  
  6756.               }
  6757.  
  6758.  
  6759.             }
  6760.             return false;
  6761.           }
  6762.  
  6763.           mgrProto.subscribe19 = function (o, f, opts) {
  6764.  
  6765.             const ct_clients_ = this.clients_ || 0;
  6766.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  6767.  
  6768.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  6769.  
  6770.             let objectId = ((o || 0).invalidationId || 0).objectId;
  6771.             if (!objectId) return this.subscribe18.apply(this, arguments);
  6772.             objectId = convertId(objectId);
  6773.  
  6774.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  6775.  
  6776.             if (ct_clients_[objectId]) {
  6777.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  6778.             }
  6779.  
  6780.             return this.subscribe18.apply(this, arguments);
  6781.           }
  6782.  
  6783.           mgrProto.unsubscribe = function (o, d) {
  6784.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  6785.               this.subscribe18 = this.subscribe;
  6786.               this.subscribe = this.subscribe19;
  6787.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  6788.             }
  6789.             const ct_clients_ = this.clients_;
  6790.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  6791.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  6792.  
  6793.             let objectId = ((o || 0).invalidationId || 0).objectId;
  6794.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  6795.  
  6796.             objectId = convertId(objectId);
  6797.  
  6798.  
  6799.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  6800.  
  6801.             const callbacks = this[keyCallbackStore] || 0;
  6802.             const callbackObj = callbacks[objectId] || 0;
  6803.  
  6804.  
  6805.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  6806.               const w = ct_clients_[objectId];
  6807.               --lza;
  6808.               if (lza < -1e9) lza = -1;
  6809.               const qta = lza;
  6810.               rafHandleHolder.push(() => {
  6811.                 if (qta === ct_handles_[objectId]) {
  6812.                   const o = {
  6813.                     callbacks, callbackObj,
  6814.                     client: ct_clients_[objectId],
  6815.                     handle: ct_handles_[objectId]
  6816.                   };
  6817.                   let p = 0;
  6818.                   try {
  6819.                     if (ct_clients_[objectId] === w) {
  6820.                       w && "function" === typeof w.dispose && w.dispose();
  6821.                       delete ct_clients_[objectId];
  6822.                       delete ct_handles_[objectId];
  6823.                       p = 1;
  6824.                     } else {
  6825.                       // w && "function" === typeof w.dispose && w.dispose();
  6826.                       // delete ct_clients_[objectId];
  6827.                       // delete ct_handles_[objectId];
  6828.                       p = 2;
  6829.                     }
  6830.                   } catch (e) {
  6831.                     console.warn(e);
  6832.                   }
  6833.                   console.log(`unsubscribed: ${p}`, this, o);
  6834.                 }
  6835.               });
  6836.               ct_handles_[objectId] = qta;
  6837.               if (pzw === 0) {
  6838.                 pzw = requestAnimationFrame(rafHandlerFn);
  6839.               }
  6840.             }
  6841.           }
  6842.  
  6843.  
  6844.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  6845.  
  6846.         } else {
  6847.  
  6848.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  6849.         }
  6850.  
  6851.         console.log("[End]");
  6852.  
  6853.         console.groupEnd();
  6854.  
  6855.       }
  6856.  
  6857.  
  6858.  
  6859.       /*
  6860.  
  6861.  
  6862.               a.prototype.async = function(e, h) {
  6863.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  6864.               }
  6865.               ;
  6866.               a.prototype.cancelAsync = function(e) {
  6867.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  6868.               }
  6869.  
  6870.       */
  6871.  
  6872.  
  6873.  
  6874.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  6875.  
  6876.         let __dummyManager__ = null;
  6877.  
  6878.         mightFirstCheckOnYtInit();
  6879.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  6880.         console.log("[Begin]");
  6881.         (() => {
  6882.  
  6883.           const tag = "yt-invalidation-continuation"
  6884.           const dummy = document.createElement(tag);
  6885.  
  6886.           const cProto = getProto(dummy);
  6887.           if (!cProto || !cProto.attached) {
  6888.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6889.             return;
  6890.           }
  6891.  
  6892.           const dummyManager = (dummy.inst || dummy).manager_ || 0;
  6893.           __dummyManager__ = dummyManager;
  6894.  
  6895.           if (CHANGE_DATA_FLUSH_ASYNC && typeof cProto.async === 'function' && !cProto.async71 && cProto.async.length === 2 && typeof cProto.cancelAsync === 'function' && !cProto.cancelAsync71 && cProto.cancelAsync.length === 1) {
  6896.  
  6897.  
  6898.             const rafHub = new RAFHub();
  6899.  
  6900.             rafHub.keepRAF = true;
  6901.             cProto.async71 = cProto.async;
  6902.             cProto.cancelAsync71 = cProto.cancelAsync;
  6903.  
  6904.             // mostly for subscription timeoutMs 10000ms
  6905.             let mcw = 1; // 1, 3, 5, ...
  6906.             let arr = new Map();
  6907.  
  6908.             let __asyncInited__ = 0;
  6909.             let __timeoutStartId__ = null;
  6910.             const __asyncInit__ = () => {
  6911.  
  6912.               if (__asyncInited__) return;
  6913.               __asyncInited__ = 1;
  6914.  
  6915.               __timeoutStartId__ = setTimeout(() => { });
  6916.               mcw = __timeoutStartId__ * 2 + 1;
  6917.  
  6918.               setInterval(() => {
  6919.  
  6920.                 if (!arr.length) return;
  6921.  
  6922.                 const p = Date.now();
  6923.                 let deleteKeys = [];
  6924.                 arr.forEach((entry, key) => {
  6925.  
  6926.  
  6927.                   if (entry.cid === -1) {
  6928.                     entry.cid = -2;
  6929.                   } else if (entry.cid === -2) {
  6930.  
  6931.                     let offset = p - entry.add
  6932.                     if (offset < 0) offset = 0;
  6933.                     let delay2 = entry.delay - offset;
  6934.                     if (delay2 < 0) delay2 = 0;
  6935.                     entry.cid = setTimeout(entry.q(), delay2);
  6936.                     entry.q = null;
  6937.  
  6938.                   } else if (entry.add + entry.delay < p) {
  6939.                     deleteKeys.push(key);
  6940.  
  6941.                   }
  6942.  
  6943.                 })
  6944.  
  6945.                 for (const key of deleteKeys) arr.delete(key);
  6946.  
  6947.               }, 2000)
  6948.  
  6949.             }
  6950.  
  6951.  
  6952.  
  6953.  
  6954.             cProto.async = function (e, h) {
  6955.  
  6956.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  6957.  
  6958.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  6959.  
  6960.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  6961.  
  6962.  
  6963.               if (!this.__asyncInited__) {
  6964.                 this.__asyncInited__ = 1;
  6965.                 __asyncInit__();
  6966.               }
  6967.               mcw += 2; // 2K+3, 2K+4, ...
  6968.               if (mcw > 1e9) mcw = mcw % 1e4;
  6969.               const cid = mcw;
  6970.               const q = () => {
  6971.                 return () => {
  6972.                   console.log('async h > 8000');
  6973.                   e.call(this);
  6974.                 }
  6975.               }
  6976.               // setTimeout(q, delay)
  6977.               arr.set(cid, {
  6978.                 cid: -1, // -1 -> -2 -> cid
  6979.                 add: Date.now(),
  6980.                 q,
  6981.                 delay: h
  6982.               });
  6983.               // console.log('cid-async', cid)
  6984.               return cid;
  6985.  
  6986.             }
  6987.  
  6988.  
  6989.             cProto.cancelAsync = function (e) {
  6990.  
  6991.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  6992.  
  6993.               // console.log('cid-unasync', e)
  6994.  
  6995.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  6996.  
  6997.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  6998.  
  6999.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  7000.  
  7001.                 if (!arr.has(e)) return; // duplciated cancel
  7002.  
  7003.                 const entry = arr.get(e);
  7004.                 if (entry.cid < 0) {
  7005.                   entry.cid = 0;
  7006.                   arr.delete(e);
  7007.                 } else {
  7008.                   clearTimeout(entry.cid); // cid >= 1
  7009.                   entry.cid = 0;
  7010.                   arr.delete(e);
  7011.                 }
  7012.  
  7013.               } else {
  7014.  
  7015.                 return this.cancelAsync71(e);
  7016.  
  7017.               }
  7018.  
  7019.             }
  7020.  
  7021.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  7022.  
  7023.           } else {
  7024.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  7025.  
  7026.           }
  7027.  
  7028.         })();
  7029.  
  7030.         console.log("[End]");
  7031.  
  7032.         console.groupEnd();
  7033.  
  7034.  
  7035.  
  7036.         onManagerFound(__dummyManager__);
  7037.  
  7038.       }).catch(console.warn);
  7039.  
  7040.  
  7041.  
  7042.  
  7043.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  7044.  
  7045.  
  7046.  
  7047.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  7048.  
  7049.  
  7050.           mightFirstCheckOnYtInit();
  7051.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  7052.           console.log("[Begin]");
  7053.           (() => {
  7054.  
  7055.             const tag = "yt-live-interactivity-component-background"
  7056.             const dummy = document.createElement(tag);
  7057.  
  7058.             const cProto = getProto(dummy);
  7059.             if (!cProto || !cProto.attached) {
  7060.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7061.               return;
  7062.             }
  7063.  
  7064.  
  7065.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  7066.  
  7067.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  7068.               cProto.maybeLoadAnimationBackground = function () {
  7069.                 let toRun = true;
  7070.                 if (!this.__bypassDisableAnimationBackground__) {
  7071.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  7072.                     if (!this.lottieAnimation) {
  7073.                       if (this.useAnimationBackground === true) {
  7074.                         console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7075.                       }
  7076.                       toRun = false;
  7077.                     }
  7078.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  7079.                     if (this.useAnimationBackground === true) {
  7080.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7081.                       this.useAnimationBackground = false;
  7082.                     }
  7083.                   }
  7084.                 }
  7085.                 if (toRun) {
  7086.                   return this.maybeLoadAnimationBackground77.apply(this, arguments);
  7087.                 }
  7088.               }
  7089.  
  7090.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  7091.  
  7092.             } else {
  7093.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  7094.  
  7095.             }
  7096.  
  7097.           })();
  7098.  
  7099.           console.log("[End]");
  7100.  
  7101.           console.groupEnd();
  7102.  
  7103.  
  7104.         }).catch(console.warn);
  7105.  
  7106.       }
  7107.  
  7108.  
  7109.     }
  7110.  
  7111.  
  7112.  
  7113.  
  7114.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  7115.  
  7116.     const fixJsonParse = () => {
  7117.  
  7118.  
  7119.  
  7120.       if (jsonParseFix && typeof JSON.parse === 'function' && !JSON.parse68) {
  7121.  
  7122.         let { _parse, _JSON } = jsonParseFix;
  7123.  
  7124.  
  7125.         let error = 0;
  7126.         try {
  7127.           _parse.apply(JSON, ["{}"])
  7128.           _JSON = JSON;
  7129.         } catch (e) {
  7130.           error = 1;
  7131.         }
  7132.         if (error === 1) {
  7133.  
  7134.           try {
  7135.             _parse.apply(_JSON, ["{}"])
  7136.           } catch (e) {
  7137.             error = 2;
  7138.           }
  7139.           if (error === 2) {
  7140.             return;
  7141.           }
  7142.         }
  7143.  
  7144.  
  7145.         JSON.parse68 = JSON.parse;
  7146.  
  7147.         JSON.parse = function parse(a, b) {
  7148.           const stack = (new Error()).stack;
  7149.           if (stack.includes('.readyStateChangeHandler_')) return _parse.apply(_JSON, arguments);
  7150.           return this.parse68(...arguments);
  7151.         };
  7152.  
  7153.         JSON.parse.toString = function () {
  7154.           return JSON.parse68.toString();
  7155.         };
  7156.  
  7157.         jsonParseFix = null;
  7158.  
  7159.       }
  7160.  
  7161.     }
  7162.  
  7163.     if (DE_JSONPRUNE_FOR_readyStateChangeHandler_) {
  7164.       promiseForCustomYtElementsReady.then(fixJsonParse);
  7165.       fixJsonParse();
  7166.     }
  7167.  
  7168.   });
  7169.  
  7170.  
  7171.  
  7172. })({ IntersectionObserver });

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