☰

YouTube 超快聊天

YouTube直播聊天的终极性能提升

当前为 2023-09-26 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.60.9
  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. // @require             https://greasyfork.org/scripts/475632-ytconfighacks/code/ytConfigHacks.js?version=1252732
  19. //
  20. // @compatible          firefox Violentmonkey
  21. // @compatible          firefox Tampermonkey
  22. // @compatible          firefox FireMonkey
  23. // @compatible          chrome Violentmonkey
  24. // @compatible          chrome Tampermonkey
  25. // @compatible          opera Violentmonkey
  26. // @compatible          opera Tampermonkey
  27. // @compatible          safari Stay
  28. // @compatible          edge Violentmonkey
  29. // @compatible          edge Tampermonkey
  30. // @compatible          brave Violentmonkey
  31. // @compatible          brave Tampermonkey
  32. //
  33. // @description         Ultimate Performance Boost for YouTube Live Chats
  34. // @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
  35. // @description:zh-TW   YouTube直播聊天的終極性能提升
  36. // @description:zh-CN   YouTube直播聊天的终极性能提升
  37. //
  38. // ==/UserScript==
  39.  
  40. ((__CONTEXT__) => {
  41.   'use strict';
  42.  
  43.   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
  44.   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.
  45.   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
  46.  
  47.   const ENABLE_NO_SMOOTH_TRANSFORM = true;                // Depends on whether you want the animation effect for new chat messages
  48.   const USE_OPTIMIZED_ON_SCROLL_ITEMS = true;             // TRUE for the majority
  49.   const USE_WILL_CHANGE_CONTROLLER = false;               // FALSE for the majority
  50.   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.
  51.   const ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  52.  
  53.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  54.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  55.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  56.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  57.  
  58.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  59.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  60.  
  61.   // Replace requestAnimationFrame timers with custom implementation
  62.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  63.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  64.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  65.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  66.  
  67.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  68.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  69.  
  70.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  71.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  72.  
  73.   // Data Manipulation for Participants (Participant List)
  74.   // << if DO_PARTICIPANT_LIST_HACKS >>
  75.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  76.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  77.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  78.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  79.   // << end >>
  80.  
  81.   // show more button
  82.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  83.  
  84.   // faster stampDomArray_ for participants list creation
  85.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  86.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  87.  
  88.   // reuse yt components
  89.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  90.  
  91.   // images <Group#I01>
  92.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  93.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  94.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  95.  
  96.   const DO_LINK_PREFETCH = true;                      // DO NOT CHANGE
  97.   // << if DO_LINK_PREFETCH >>
  98.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  99.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  100.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  101.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  102.   // << end >>
  103.  
  104.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  105.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  106.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  107.  
  108.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  109.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  110.  
  111.   const ATTEMPT_ANIMATED_TICKER_BACKGROUND = 'steps'   // false OR '' for disabled, 'linear', 'steps' for easing-function
  112.   // << if ATTEMPT_ANIMATED_TICKER_BACKGROUND >>
  113.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  114.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  115.   // [limiting 500 max steps] is recommended for "confortable visual change"
  116.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  117.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  118.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  119.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  120.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  121.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  122.   // << end >>
  123.  
  124.   const FIX_TOOLTIP_DISPLAY = true;
  125.   const USE_VANILLA_DEREF = true;
  126.   const FIX_DROPDOWN_DERAF = true;                        // DONT CHANGE
  127.  
  128.  
  129.   const CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true;        // cache the menu data and used for the next reopen
  130.   const ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU = true; // pause auto scroll faster when the context menu is about to show
  131.   const ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU = true;        // avoid multiple requests on the same time
  132.  
  133.   const BOOST_MENU_OPENCHANGED_RENDERING = true;
  134.   const FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK = true;  // click again = close
  135.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true; // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  136.   // const FIX_MENU_CAPTURE_SCROLL = true;
  137.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;        // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  138.  
  139.   const RAF_FIX_keepScrollClamped = true;
  140.   const RAF_FIX_scrollIncrementally = 2;            // 0: no action; 1: basic fix; 2: also fix scroll position
  141.  
  142.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  143.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  144.  
  145.   const CHECK_JSONPRUNE = true;                        // This is a bug in Brave
  146.   // << end >>
  147.  
  148.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  149.  
  150.   const CHANGE_DATA_FLUSH_ASYNC = false;
  151.   // CHANGE_DATA_FLUSH_ASYNC is disabled due to bug report: https://greasyfork.org/scripts/469878-youtube-super-fast-chat/discussions/199479
  152.   // to be further investigated
  153.  
  154.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  155.  
  156.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  157.   // 0 = default Yt animation background [= no fix];
  158.   // 1 = disable default animation background [= keep special animation];
  159.   // 2 = disable all animation backgrounds [= no animation backbround]
  160.  
  161.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  162.  
  163.   const MAX_TOOLTIP_NO_WRAP_WIDTH = '72vw'; // '' for disable; accept values like '60px', '25vw'
  164.  
  165.   const AMEND_TICKER_handleLiveChatAction = true; // to fix ticker duplication and unresponsively fast ticker generation
  166.  
  167.   const ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION = true;
  168.   const ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME = true;
  169.   const FIX_BATCH_TICKER_ORDER = true;
  170.  
  171.   const DISABLE_Translation_By_Google = true;
  172.  
  173.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  174.   /*
  175.  
  176.     ### Time Approach
  177.  
  178.     // all below values can make the time interval > 250ms
  179.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  180.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  181.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  182.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  183.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  184.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  185.  
  186.     ### Pixel Check
  187.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  188.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  189.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  190.  
  191.     ### Example - totalDuration = 280000
  192.     totalDuration 280000
  193.     stepInterval 0.5
  194.     numOfSteps = Math.round(100 / stepInterval) = 200
  195.     time interval = 280000 / 200 = 1400ms <acceptable>
  196.  
  197.     ### Example - totalDuration = 18000
  198.     totalDuration 18000
  199.     stepInterval 5
  200.     numOfSteps = Math.round(100 / stepInterval) = 20
  201.     time interval = 18000 / 20 = 900ms <acceptable>
  202.  
  203.     ### Example - totalDuration = 5000
  204.     totalDuration 5000
  205.     stepInterval 5
  206.     numOfSteps = Math.round(100 / stepInterval) = 20
  207.     time interval = 5000 / 20 = 250ms <threshold value>
  208.  
  209.     ### Example - totalDuration = 3600
  210.     totalDuration 3600
  211.     stepInterval 5
  212.     numOfSteps = Math.round(100 / stepInterval) = 20
  213.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  214.  
  215.   */
  216.  
  217.   // =======================================================================================================
  218.  
  219.   // AUTOMAICALLY DETERMINED
  220.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  221.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  222.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  223.   let runTickerClassName = 'run-ticker';
  224.  
  225.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  226.   /*
  227.     WebP: data:image/webp;base64,UklGRjAB
  228.     PNG: data:image/png;base64,iVBORw0KGg==
  229.     JPEG: data:image/jpeg;base64,/9j/4AA=
  230.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  231.     BMP: data:image/bmp;base64,Qk1oAAAA
  232.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  233.  
  234.     WebP: data:image/webp;base64,AAAAAAA=
  235.     PNG:  data:image/png;base64,AAAAAAA=
  236.     JPEG: data:image/jpeg;base64,AAAAAAA=
  237.     GIF:  data:image/gif;base64,AAAAAAA=
  238.     BMP:  data:image/bmp;base64,AAAAAAA=
  239.  
  240.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  241.  
  242.  
  243.   */
  244.  
  245.   // image sizing code
  246.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  247.  
  248.  
  249.   //   function KC(a, b, c, d) {
  250.   //     d = void 0 === d ? "width" : d;
  251.   //     if (!a || !a.length)
  252.   //         return null;
  253.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  254.   //         var e = window.devicePixelRatio;
  255.   //         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"));
  256.   //         HC = e
  257.   //     } else
  258.   //         HC || (HC = window.devicePixelRatio);
  259.   //     e = HC;
  260.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  261.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  262.   //         return a[0].url || null;
  263.   //     e = a.length;
  264.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  265.   //         return a[e - 1].url || null;
  266.   //     if (c)
  267.   //         for (var h = 0; h < e; h++)
  268.   //             if (0 <= a[h].url.indexOf(c))
  269.   //                 return a[h].url || null;
  270.   //     for (c = 0; c < e; c++)
  271.   //         if (a[c][d] >= b)
  272.   //             return a[c].url || null;
  273.   //     for (b = e - 1; 0 < b; b--)
  274.   //         if (a[b][d])
  275.   //             return a[b].url || null;
  276.   //     return a[0].url || null
  277.   // }
  278.  
  279.   const { IntersectionObserver } = __CONTEXT__;
  280.  
  281.   /** @type {globalThis.PromiseConstructor} */
  282.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  283.  
  284.   // let jsonParseFix = null;
  285.  
  286.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  287.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  288.  
  289.   // necessity of cssText3_smooth_transform_position to be checked.
  290.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  291.  
  292.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  293.         position: static !important;
  294.     }
  295.  
  296.   `: '';
  297.  
  298.   // fallback if dummy style fn fails
  299.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  300.  
  301.     /* optional */
  302.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  303.         height: auto !important;
  304.         min-height: unset !important;
  305.     }
  306.  
  307.     #items.style-scope.yt-live-chat-item-list-renderer {
  308.         transform: translateY(0px) !important;
  309.     }
  310.  
  311.     /* optional */
  312.  
  313.   `: '';
  314.  
  315.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  316.  
  317.     /* ------------------------------------------------------------------------------------------------------------- */
  318.  
  319.     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 {
  320.         contain: layout style;
  321.     }
  322.  
  323.     #items.style-scope.yt-live-chat-item-list-renderer {
  324.         contain: layout paint style;
  325.     }
  326.  
  327.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  328.         contain: style;
  329.     }
  330.  
  331.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  332.         contain: size style;
  333.     }
  334.  
  335.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  336.         contain: size layout paint style;
  337.     }
  338.  
  339.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  340.         contain: layout paint style;
  341.     }
  342.  
  343.     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 {
  344.         contain: layout style;
  345.     }
  346.  
  347.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  348.         contain: layout paint style;
  349.     }
  350.  
  351.     /* ------------------------------------------------------------------------------------------------------------- */
  352.  
  353.   ` : '';
  354.  
  355.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  356.  
  357.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  358.         top: 4px;
  359.         transition-property: top;
  360.         bottom: unset;
  361.     }
  362.  
  363.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  364.         top: -42px;
  365.     }
  366.  
  367.   `: '';
  368.  
  369.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  370.  
  371.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  372.         contain: layout style;
  373.     }
  374.  
  375.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  376.         overflow: visible;
  377.     }
  378.  
  379.   `: '';
  380.  
  381.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  382.  
  383.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  384.         --yt-live-chat-action-panel-top-border: none;
  385.     }
  386.  
  387.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  388.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  389.     }
  390.  
  391.     html #panel-pages.yt-live-chat-renderer {
  392.         border-top: 0;
  393.         border-bottom: 0;
  394.     }
  395.  
  396.   `: '';
  397.  
  398.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  399.  
  400.     img,
  401.     yt-img-shadow[height][width],
  402.     yt-img-shadow {
  403.         content-visibility: visible !important;
  404.     }
  405.  
  406.   `  : '';
  407.  
  408.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  409.  
  410.     /* remove YouTube constant will-change */
  411.     /* constant value will slow down the performance; default auto */
  412.  
  413.     /* www-player.css */
  414.     html .ytp-contextmenu,
  415.     html .ytp-settings-menu {
  416.         will-change: unset;
  417.     }
  418.  
  419.     /* frequently matched elements */
  420.     html .fill.yt-interaction,
  421.     html .stroke.yt-interaction,
  422.     html .yt-spec-touch-feedback-shape__fill,
  423.     html .yt-spec-touch-feedback-shape__stroke {
  424.         will-change: unset;
  425.     }
  426.  
  427.     /* live_chat_polymer.js */
  428.     /*
  429.     html .toggle-button.tp-yt-paper-toggle-button,
  430.     html #primaryProgress.tp-yt-paper-progress,
  431.     html #secondaryProgress.tp-yt-paper-progress,
  432.     html #onRadio.tp-yt-paper-radio-button,
  433.     html .fill.yt-interaction,
  434.     html .stroke.yt-interaction,
  435.     html .yt-spec-touch-feedback-shape__fill,
  436.     html .yt-spec-touch-feedback-shape__stroke {
  437.         will-change: unset;
  438.     }
  439.     */
  440.  
  441.     /* desktop_polymer_enable_wil_icons.js */
  442.     /* html .fill.yt-interaction,
  443.     html .stroke.yt-interaction, */
  444.     html tp-yt-app-header::before,
  445.     html tp-yt-iron-list,
  446.     html #items.tp-yt-iron-list > *,
  447.     html #onRadio.tp-yt-paper-radio-button,
  448.     html .toggle-button.tp-yt-paper-toggle-button,
  449.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  450.     html #items.ytd-post-multi-image-renderer,
  451.     html #items.ytd-horizontal-card-list-renderer,
  452.     html #items.yt-horizontal-list-renderer,
  453.     html #left-arrow.yt-horizontal-list-renderer,
  454.     html #right-arrow.yt-horizontal-list-renderer,
  455.     html #items.ytd-video-description-infocards-section-renderer,
  456.     html #items.ytd-video-description-music-section-renderer,
  457.     html #chips.ytd-feed-filter-chip-bar-renderer,
  458.     html #chips.yt-chip-cloud-renderer,
  459.     html #items.ytd-merch-shelf-renderer,
  460.     html #items.ytd-product-details-image-carousel-renderer,
  461.     html ytd-video-preview,
  462.     html #player-container.ytd-video-preview,
  463.     html #primaryProgress.tp-yt-paper-progress,
  464.     html #secondaryProgress.tp-yt-paper-progress,
  465.     html ytd-miniplayer[enabled] /* ,
  466.     html .yt-spec-touch-feedback-shape__fill,
  467.     html .yt-spec-touch-feedback-shape__stroke */ {
  468.         will-change: unset;
  469.     }
  470.  
  471.     /* other */
  472.     .ytp-videowall-still-info-content[class],
  473.     .ytp-suggestion-image[class] {
  474.         will-change: unset !important;
  475.     }
  476.  
  477.   ` : '';
  478.  
  479.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  480.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  481.  
  482.     elzm-fonts {
  483.         visibility: collapse;
  484.         position: fixed;
  485.         top: -10px;
  486.         left: -10px;
  487.         font-size: 10pt;
  488.         line-height: 100%;
  489.         width: 100px;
  490.         height: 100px;
  491.         transform: scale(0.1);
  492.         transform: scale(0.01);
  493.         transform: scale(0.001);
  494.         transform-origin: 0 0;
  495.         contain: strict;
  496.         display: block;
  497.  
  498.         pointer-events: none !important;
  499.         user-select: none !important;
  500.     }
  501.  
  502.     elzm-fonts[id]#elzm-fonts-yk75g {
  503.         user-select: none !important;
  504.         pointer-events: none !important;
  505.     }
  506.  
  507.     elzm-font {
  508.         visibility: collapse;
  509.         position: absolute;
  510.         line-height: 100%;
  511.         width: 100px;
  512.         height: 100px;
  513.         contain: strict;
  514.         display: block;
  515.  
  516.         user-select: none !important;
  517.         pointer-events: none !important;
  518.     }
  519.  
  520.     elzm-font::before {
  521.         visibility: collapse;
  522.         position: absolute;
  523.         line-height: 100%;
  524.         width: 100px;
  525.         height: 100px;
  526.         contain: strict;
  527.         display: block;
  528.  
  529.         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';
  530.  
  531.         user-select: none !important;
  532.         pointer-events: none !important;
  533.     }
  534.  
  535.   `: '';
  536.  
  537.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  538.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  539.         -webkit-backdrop-filter: none;
  540.         backdrop-filter: none;
  541.     }
  542.   `: '';
  543.  
  544.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  545.  
  546.     @keyframes blinker-miuzp {
  547.         0%, 60%, 100% {
  548.             opacity: 1;
  549.         }
  550.         30% {
  551.             opacity: 0.6;
  552.         }
  553.     }
  554.  
  555.     yt-icon-button#show-more.has-new-messages-miuzp {
  556.         animation: blinker-miuzp 1.74s linear infinite;
  557.     }
  558.  
  559.   `: '';
  560.  
  561.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  562.  
  563.     yt-live-chat-paid-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  564.       pointer-events: none !important;
  565.     }
  566.  
  567.     yt-live-chat-membership-item-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  568.       pointer-events: none !important;
  569.     }
  570.  
  571.     yt-live-chat-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  572.       pointer-events: none !important;
  573.     }
  574.  
  575.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  576.       pointer-events: none !important;
  577.     }
  578.  
  579.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  580.       pointer-events: none !important;
  581.     }
  582.  
  583.   `: '';
  584.  
  585.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  586.  
  587.  
  588.     tp-yt-paper-tooltip[role="tooltip"] {
  589.       box-sizing: content-box !important;
  590.       margin: 0px !important;
  591.       padding: 0px !important;
  592.       contain: none !important;
  593.     }
  594.  
  595.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  596.       box-sizing: content-box !important;
  597.       display: inline-block;
  598.       contain: none !important;
  599.     }
  600.  
  601.  
  602.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  603.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  604.       width: max-content;
  605.       text-overflow: ellipsis;
  606.       overflow: hidden;
  607.       white-space: nowrap;
  608.     }
  609.  
  610.  
  611.   `: '';
  612.  
  613.  
  614.   const cssText13_no_text_select_when_menu_visible = `
  615.     [menu-visible] {
  616.       --sfc47-text-select: none;
  617.     }
  618.     [menu-visible] #header[id][class],
  619.     [menu-visible] #content[id][class],
  620.     [menu-visible] #header[id][class] *,
  621.     [menu-visible] #content[id][class] * {
  622.       user-select: var(--sfc47-text-select) !important;
  623.     }
  624.     [menu-visible] #menu {
  625.       --sfc47-text-select: inherit;
  626.     }
  627.   `
  628.  
  629.  
  630.   const addCss = () => `
  631.  
  632.     @property --ticker-rtime {
  633.       syntax: "<percentage>";
  634.       inherits: false;
  635.       initial-value: 0%;
  636.     }
  637.  
  638.     /*
  639.     .run-ticker {
  640.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  641.     }
  642.  
  643.     .run-ticker-test {
  644.       background: #00000001;
  645.     }
  646.  
  647.     .run-ticker-forced,
  648.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  649.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  650.     {
  651.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  652.     }
  653.     */
  654.  
  655.     .run-ticker {
  656.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  657.     }
  658.  
  659.     .run-ticker,
  660.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  661.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  662.     {
  663.       background: var(--ticker-bg) !important;
  664.     }
  665.  
  666.     yt-live-chat-ticker-dummy777-item-renderer {
  667.       background: #00000001;
  668.     }
  669.  
  670.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  671.       position: fixed !important;
  672.       top: -1000px !important;
  673.       left: -1000px !important;
  674.       font-size: 1px !important;
  675.       color: transparent !important;
  676.       pointer-events: none !important;
  677.       z-index: -1 !important;
  678.       contain: strict !important;
  679.       box-sizing: border-box !important;
  680.       pointer-events: none !important;
  681.       user-select: none !important;
  682.       max-width: 1px !important;
  683.       max-height: 1px !important;
  684.       overflow: hidden !important;
  685.       visibility: collapse !important;
  686.       display: none !important;
  687.     }
  688.  
  689.     yt-live-chat-ticker-dummy777-item-renderer #container {
  690.       background: inherit;
  691.     }
  692.  
  693.  
  694.     ${cssText8_fonts_pre_render}
  695.  
  696.     ${cssText9_no_backdrop_filter_when_menu_shown}
  697.  
  698.     @supports (contain: layout paint style) {
  699.  
  700.       ${cssText5}
  701.  
  702.     }
  703.  
  704.     @supports (color: var(--general)) {
  705.  
  706.       html {
  707.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  708.       }
  709.  
  710.       ${cssText3_smooth_transform_position}
  711.  
  712.       ${cssText7c_will_change_unset}
  713.  
  714.       ${cssText7b_content_visibility_unset}
  715.  
  716.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  717.           overflow-y: scroll;
  718.           padding-right: 0;
  719.       }
  720.  
  721.       ${cssText4_smooth_transform_forced_props}
  722.  
  723.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  724.           pointer-events: none !important;
  725.       }
  726.  
  727.       #continuations, #continuations * {
  728.           contain: strict;
  729.           position: fixed;
  730.           top: 2px;
  731.           height: 1px;
  732.           width: 2px;
  733.           height: 1px;
  734.           visibility: collapse;
  735.       }
  736.  
  737.       ${cssText6b_show_more_button}
  738.  
  739.       ${cssText6d_input_panel_border}
  740.  
  741.       ${cssText6c_input_panel_overflow}
  742.  
  743.     }
  744.  
  745.  
  746.     @supports (overflow-anchor: auto) {
  747.  
  748.       .no-anchor * {
  749.           overflow-anchor: none;
  750.       }
  751.       .no-anchor > item-anchor {
  752.           overflow-anchor: auto;
  753.       }
  754.  
  755.       item-anchor {
  756.  
  757.           height:1px;
  758.           width: 100%;
  759.           transform: scaleY(0.00001);
  760.           transform-origin:0 0;
  761.           contain: strict;
  762.           opacity:0;
  763.           display:flex;
  764.           position:relative;
  765.           flex-shrink:0;
  766.           flex-grow:0;
  767.           margin-bottom:0;
  768.           overflow:hidden;
  769.           box-sizing:border-box;
  770.           visibility: visible;
  771.           content-visibility: visible;
  772.           contain-intrinsic-size: auto 1px;
  773.           pointer-events:none !important;
  774.  
  775.       }
  776.  
  777.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  778.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  779.       }
  780.  
  781.       html item-anchor {
  782.  
  783.           height: 1px;
  784.           width: 1px;
  785.           top: auto;
  786.           left: auto;
  787.           right: auto;
  788.           bottom: auto;
  789.           transform: translateY(-1px);
  790.           position: absolute;
  791.           z-index: -1;
  792.  
  793.       }
  794.  
  795.     }
  796.  
  797.     @supports (color: var(--pre-rendering)) {
  798.  
  799.       @keyframes dontRenderAnimation {
  800.           0% {
  801.               background-position-x: 3px;
  802.           }
  803.           100% {
  804.               background-position-x: 4px;
  805.           }
  806.       }
  807.  
  808.       .dont-render[class] {
  809.           /* visibility: collapse !important; */
  810.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  811.  
  812.           transform: scale(0.01) !important;
  813.           transform: scale(0.00001) !important;
  814.           transform: scale(0.0000001) !important;
  815.           transform-origin: 0 0 !important;
  816.           z-index: -1 !important;
  817.           contain: strict !important;
  818.           box-sizing: border-box !important;
  819.  
  820.           height: 1px !important;
  821.           height: 0.1px !important;
  822.           height: 0.01px !important;
  823.           height: 0.0001px !important;
  824.           height: 0.000001px !important;
  825.  
  826.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  827.  
  828.           pointer-events: none !important;
  829.           user-select: none !important;
  830.  
  831.       }
  832.  
  833.       #sk35z {
  834.         display: block !important;
  835.  
  836.         visibility: collapse !important;
  837.  
  838.         transform: scale(0.01) !important;
  839.         transform: scale(0.00001) !important;
  840.         transform: scale(0.0000001) !important;
  841.         transform-origin: 0 0 !important;
  842.         z-index: -1 !important;
  843.         contain: strict !important;
  844.         box-sizing: border-box !important;
  845.  
  846.         height: 1px !important;
  847.         height: 0.1px !important;
  848.         height: 0.01px !important;
  849.         height: 0.0001px !important;
  850.         height: 0.000001px !important;
  851.  
  852.         position: absolute !important;
  853.         top: -1000px !important;
  854.         left: -1000px !important;
  855.  
  856.       }
  857.  
  858.     }
  859.  
  860.     [rNgzQ] {
  861.       opacity: 0 !important;
  862.       pointer-events: none !important;
  863.     }
  864.  
  865.  
  866.     ${cssText10_show_more_blinker}
  867.  
  868.     ${cssText11_entire_message_clickable}
  869.  
  870.     ${cssText12_nowrap_tooltip}
  871.  
  872.     ${cssText13_no_text_select_when_menu_visible}
  873.  
  874.   `;
  875.  
  876.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  877.  
  878.   // Create a unique key for the script and check if it is already running
  879.   const hkey_script = 'mchbwnoasqph';
  880.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  881.   win[hkey_script] = true;
  882.  
  883.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  884.  
  885.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  886.     if (te4 < 3) {
  887.       setTimeout(() => { });
  888.       setTimeout(() => { });
  889.     }
  890.  
  891.   }
  892.  
  893.   const firstKey = (obj) => {
  894.     for (const key in obj) {
  895.       if (obj.hasOwnProperty(key)) return key;
  896.     }
  897.     return null;
  898.   }
  899.  
  900.   const firstObjectKey = (obj) => {
  901.     for (const key in obj) {
  902.       if (obj.hasOwnProperty(key) && typeof obj[key] === 'object') return key;
  903.     }
  904.     return null;
  905.   }
  906.  
  907.   function removeElementFromArray(arr, index) {
  908.   if (index >= 0 && index < arr.length) {
  909.     arr.splice(index, 1);
  910.   }
  911. }
  912.  
  913.   function getRandomInt(a, b) {
  914.   // Ensure that 'a' and 'b' are integers
  915.   a = Math.ceil(a);
  916.   b = Math.floor(b);
  917.  
  918.   // Generate a random integer in the range [a, b]
  919.   return Math.floor(Math.random() * (b - a + 1)) + a;
  920. }
  921.  
  922.   function deepCopy(obj, skipKeys) {
  923.     skipKeys = skipKeys || [];
  924.     if (!obj || typeof obj !== 'object') return obj;
  925.     if (Array.isArray(obj)) {
  926.       return obj.map(item => deepCopy(item, skipKeys));
  927.     }
  928.     const copy = {};
  929.     for (let key in obj) {
  930.       if (!skipKeys.includes(key)) {
  931.         copy[key] = deepCopy(obj[key], skipKeys);
  932.       }
  933.     }
  934.     return copy;
  935.   }
  936.  
  937.   class Mutex {
  938.  
  939.     constructor() {
  940.       this.p = Promise.resolve()
  941.     }
  942.  
  943.     /**
  944.      *  @param {(lockResolve: () => void)} f
  945.      */
  946.     lockWith(f) {
  947.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  948.     }
  949.  
  950.   }
  951.  
  952.   const PromiseExternal = ((resolve_, reject_) => {
  953.     const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  954.     return class PromiseExternal extends Promise {
  955.       constructor(cb = h) {
  956.         super(cb);
  957.         if (cb === h) {
  958.           /** @type {(value: any) => void} */
  959.           this.resolve = resolve_;
  960.           /** @type {(reason?: any) => void} */
  961.           this.reject = reject_;
  962.         }
  963.       }
  964.     };
  965.   })();
  966.  
  967.   /** @type {typeof PromiseExternal.prototype | null} */
  968.   let relayPromise = null;
  969.  
  970.  
  971.   /** @type {typeof PromiseExternal.prototype | null} */
  972.   let onPlayStateChangePromise = null;
  973.  
  974.  
  975.  
  976.   let playEventsStack = Promise.resolve();
  977.  
  978.  
  979.   let playerProgressChangedArg1 = null;
  980.   let playerProgressChangedArg2 = null;
  981.   let playerProgressChangedArg3 = null;
  982.  
  983.  
  984.   function dr(s) {
  985.     // reserved for future use
  986.     return s;
  987.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  988.   }
  989.  
  990.   const getProto = (element) => {
  991.     if (element) {
  992.       const cnt = element.inst || element;
  993.       return cnt.constructor.prototype || null;
  994.     }
  995.     return null;
  996.   }
  997.  
  998.   const assertor = (f) => f() || console.assert(false, f + "");
  999.  
  1000.   const fnIntegrity = (f, d) => {
  1001.     if (!f || typeof f !== 'function') {
  1002.       console.warn('f is not a function', f);
  1003.       return;
  1004.     }
  1005.     let p = f + "", s = 0, j = -1, w = 0;
  1006.     for (let i = 0, l = p.length; i < l; i++) {
  1007.       const t = p[i];
  1008.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  1009.         if (j < i - 1) w++;
  1010.         j = i;
  1011.       } else {
  1012.         s++;
  1013.       }
  1014.     }
  1015.     let itz = `${f.length}.${s}.${w}`;
  1016.     if (!d) {
  1017.       return itz;
  1018.     } else {
  1019.       return itz === d;
  1020.     }
  1021.   }
  1022.  
  1023.   if (DISABLE_Translation_By_Google) {
  1024.  
  1025.     let mo = new MutationObserver(() => {
  1026.  
  1027.       if (!mo) return;
  1028.       let h = document.head;
  1029.       if (!h) return;
  1030.       mo.disconnect();
  1031.       mo.takeRecords();
  1032.       mo = null;
  1033.  
  1034.       let meta = document.createElement('meta');
  1035.       meta.setAttribute('name', 'google');
  1036.       meta.setAttribute('content', 'notranslate');
  1037.       h.appendChild(meta);
  1038.  
  1039.  
  1040.     });
  1041.     mo.observe(document, { subtree: true, childList: true });
  1042.   }
  1043.  
  1044.  
  1045.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  1046.  
  1047.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  1048.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  1049.   if (!isContainSupport) {
  1050.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  1051.   } else {
  1052.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  1053.   }
  1054.  
  1055.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  1056.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  1057.   if (!isOverflowAnchorSupport) {
  1058.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  1059.   } else {
  1060.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  1061.   }
  1062.  
  1063.   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.
  1064.  
  1065.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  1066.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  1067.  
  1068.   let hasTimerModified = null;
  1069.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  1070.  
  1071.   const fxOperator = (proto, propertyName) => {
  1072.     let propertyDescriptorGetter = null;
  1073.     try {
  1074.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  1075.     } catch (e) { }
  1076.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  1077.       try {
  1078.  
  1079.         return propertyDescriptorGetter.call(dr(e));
  1080.       } catch (e) { }
  1081.       return e[propertyName];
  1082.     } : (e) => e[propertyName];
  1083.   };
  1084.  
  1085.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  1086.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  1087.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  1088.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  1089.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  1090.  
  1091.   const groupCollapsed = (text1, text2) => {
  1092.  
  1093.     console.groupCollapsed(`%c${text1}%c${text2}`,
  1094.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1095.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1096.     );
  1097.   }
  1098.  
  1099.   // const microNow = () => performance.now() + (performance.timeOrigin || performance.timing.navigationStart);
  1100.  
  1101.  
  1102.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  1103.   const onRegistryReady = (callback) => {
  1104.     if (typeof customElements === 'undefined') {
  1105.       if (!('__CE_registry' in document)) {
  1106.         // https://github.com/webcomponents/polyfills/
  1107.         Object.defineProperty(document, '__CE_registry', {
  1108.           get() {
  1109.             // return undefined
  1110.           },
  1111.           set(nv) {
  1112.             if (typeof nv == 'object') {
  1113.               delete this.__CE_registry;
  1114.               this.__CE_registry = nv;
  1115.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  1116.             }
  1117.             return true;
  1118.           },
  1119.           enumerable: false,
  1120.           configurable: true
  1121.         })
  1122.       }
  1123.       let eventHandler = (evt) => {
  1124.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1125.         const f = callback;
  1126.         callback = null;
  1127.         eventHandler = null;
  1128.         f();
  1129.       };
  1130.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1131.     } else {
  1132.       callback();
  1133.     }
  1134.   };
  1135.  
  1136.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1137.  
  1138.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1139.  
  1140.     return new Promise(resolve => {
  1141.  
  1142.       let ro = new ResizeObserver(entries => {
  1143.         if (entries && entries.length >= 1) {
  1144.           resolve();
  1145.           ro.disconnect();
  1146.           ro = null;
  1147.         }
  1148.       });
  1149.       ro.observe(sizingTarget);
  1150.  
  1151.  
  1152.  
  1153.     });
  1154.  
  1155.   } : (sizingTarget) => {
  1156.  
  1157.  
  1158.     return new Promise(resolve => {
  1159.  
  1160.       let io = new IntersectionObserver(entries => {
  1161.         if (entries && entries.length >= 1) {
  1162.           resolve();
  1163.           io.disconnect();
  1164.           io = null;
  1165.         }
  1166.       });
  1167.       io.observe(sizingTarget);
  1168.  
  1169.  
  1170.  
  1171.     });
  1172.  
  1173.   };
  1174.  
  1175.   /* globals WeakRef:false */
  1176.  
  1177.   /** @type {(o: Object | null) => WeakRef | null} */
  1178.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1179.  
  1180.   /** @type {(wr: Object | null) => Object | null} */
  1181.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1182.  
  1183.   const { addCssManaged } = (() => {
  1184.  
  1185.     const addFontPreRendering = () => {
  1186.  
  1187.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1188.  
  1189.       let efsContainer = document.createElement('elzm-fonts');
  1190.       efsContainer.id = 'elzm-fonts-yk75g'
  1191.  
  1192.       const arr = [];
  1193.       let p = document.createElement('elzm-font');
  1194.       arr.push(p);
  1195.  
  1196.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1197.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1198.  
  1199.           p = document.createElement('elzm-font');
  1200.           p.style.fontWeight = size;
  1201.           arr.push(p);
  1202.         }
  1203.       }
  1204.  
  1205.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1206.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1207.  
  1208.           p = document.createElement('elzm-font');
  1209.           p.style.fontFamily = 'Roboto';
  1210.           p.style.fontWeight = size;
  1211.           arr.push(p);
  1212.         }
  1213.       }
  1214.  
  1215.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1216.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1217.  
  1218.           p = document.createElement('elzm-font');
  1219.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1220.           p.style.fontWeight = size;
  1221.           arr.push(p);
  1222.         }
  1223.       }
  1224.  
  1225.  
  1226.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1227.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1228.  
  1229.           p = document.createElement('elzm-font');
  1230.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1231.           p.style.fontWeight = size;
  1232.           arr.push(p);
  1233.         }
  1234.       }
  1235.  
  1236.  
  1237.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1238.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1239.  
  1240.           p = document.createElement('elzm-font');
  1241.           p.style.fontFamily = 'sans-serif';
  1242.           p.style.fontWeight = size;
  1243.           arr.push(p);
  1244.         }
  1245.       }
  1246.  
  1247.       console.log('number of elzm-font elements', arr.length);
  1248.  
  1249.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1250.  
  1251.       (document.body || document.documentElement).appendChild(efsContainer);
  1252.  
  1253.  
  1254.       console.log('elzm-font elements have been added to the page for rendering.');
  1255.  
  1256.       console.groupEnd();
  1257.  
  1258.     }
  1259.  
  1260.     let isCssAdded = false;
  1261.  
  1262.     function addCssElement() {
  1263.       let s = document.createElement('style');
  1264.       s.id = 'ewRvC';
  1265.       return s;
  1266.     }
  1267.  
  1268.     const addCssManaged = () => {
  1269.       if (!isCssAdded && document.documentElement && document.head) {
  1270.         isCssAdded = true;
  1271.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1272.         if (ENABLE_FONT_PRE_RENDERING) {
  1273.           Promise.resolve().then(addFontPreRendering)
  1274.         }
  1275.       }
  1276.     }
  1277.  
  1278.     return { addCssManaged };
  1279.   })();
  1280.  
  1281.  
  1282.   const { setupStyle } = (() => {
  1283.  
  1284.     const sp7 = Symbol();
  1285.  
  1286.     const proxyHelperFn = (dummy) => ({
  1287.  
  1288.       get(target, prop) {
  1289.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1290.       },
  1291.       set(target, prop, value) {
  1292.         if (!(prop in dummy)) {
  1293.           target[prop] = value;
  1294.         }
  1295.         return true;
  1296.       },
  1297.       has(target, prop) {
  1298.         return (prop in target);
  1299.       },
  1300.       deleteProperty(target, prop) {
  1301.         return true;
  1302.       },
  1303.       ownKeys(target) {
  1304.         return Object.keys(target);
  1305.       },
  1306.       defineProperty(target, key, descriptor) {
  1307.         return Object.defineProperty(target, key, descriptor);
  1308.       },
  1309.       getOwnPropertyDescriptor(target, key) {
  1310.         return Object.getOwnPropertyDescriptor(target, key);
  1311.       },
  1312.  
  1313.     });
  1314.  
  1315.     const setupStyle = (m1, m2) => {
  1316.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1317.  
  1318.       const dummy1v = {
  1319.         transform: '',
  1320.         height: '',
  1321.         minHeight: '',
  1322.         paddingBottom: '',
  1323.         paddingTop: ''
  1324.       };
  1325.  
  1326.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1327.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1328.         dummy1v[k] = dummyStyleFn(k);
  1329.       }
  1330.  
  1331.       const dummy1p = proxyHelperFn(dummy1v);
  1332.       const sp1v = new Proxy(m1.style, dummy1p);
  1333.       const sp2v = new Proxy(m2.style, dummy1p);
  1334.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1335.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1336.       m1.removeAttribute("style");
  1337.       m2.removeAttribute("style");
  1338.  
  1339.     }
  1340.  
  1341.     return { setupStyle };
  1342.  
  1343.   })();
  1344.  
  1345.  
  1346.  
  1347.   function setThumbnails(config) {
  1348.  
  1349.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1350.  
  1351.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1352.  
  1353.  
  1354.       if (thumbnails && thumbnails.length > 0) {
  1355.         if (flag0 > 0 && thumbnails.length > 1) {
  1356.           let pSize = 0;
  1357.           let newThumbnails = [];
  1358.           for (const thumbnail of thumbnails) {
  1359.             if (!thumbnail || !thumbnail.url) continue;
  1360.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1361.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1362.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1363.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1364.               newThumbnails.push(thumbnail);
  1365.               if (imageLinks) imageLinks.add(thumbnail.url);
  1366.             }
  1367.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1368.               pSize = thumbnail.width;
  1369.             }
  1370.           }
  1371.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1372.             baseObject.thumbnails = newThumbnails;
  1373.           } else {
  1374.             newThumbnails.length = 0;
  1375.           }
  1376.           newThumbnails = null;
  1377.         } else {
  1378.           for (const thumbnail of thumbnails) {
  1379.             if (thumbnail && thumbnail.url) {
  1380.               if (imageLinks) imageLinks.add(thumbnail.url);
  1381.             }
  1382.           }
  1383.         }
  1384.       }
  1385.  
  1386.     }
  1387.   }
  1388.  
  1389.   function fixLiveChatItem(item, imageLinks) {
  1390.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1391.     if (liveChatTextMessageRenderer) {
  1392.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1393.       if (messageRuns && messageRuns.length > 0) {
  1394.         for (const run of messageRuns) {
  1395.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1396.           setThumbnails({
  1397.             baseObject: emojiImage,
  1398.             thumbnails: emojiImage.thumbnails,
  1399.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1400.             imageLinks
  1401.           });
  1402.         }
  1403.       }
  1404.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1405.       setThumbnails({
  1406.         baseObject: authorPhoto,
  1407.         thumbnails: authorPhoto.thumbnails,
  1408.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1409.         imageLinks
  1410.       });
  1411.     }
  1412.   }
  1413.  
  1414.  
  1415.   ; (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) && (() => {
  1416.  
  1417.     const flags = () => {
  1418.       try {
  1419.         return ytcfg.data_.EXPERIMENT_FLAGS;
  1420.       } catch (e) { }
  1421.       return null;
  1422.     };
  1423.  
  1424.     const flagsForced = () => {
  1425.       try {
  1426.         return ytcfg.data_.EXPERIMENTS_FORCED_FLAGS;
  1427.       } catch (e) { }
  1428.       return null;
  1429.     };
  1430.  
  1431.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1432.  
  1433.       // console.log(700)
  1434.  
  1435.       if (!EXPERIMENT_FLAGS) return;
  1436.  
  1437.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1438.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1439.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1440.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1441.       // console.log(701)
  1442.         }
  1443.       }
  1444.  
  1445.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1446.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1447.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1448.       // console.log(702);
  1449.       }
  1450.  
  1451.     };
  1452.  
  1453.     const uf = (EXPERIMENT_FLAGS) => {
  1454.       if (EXPERIMENT_FLAGS === undefined) EXPERIMENT_FLAGS = flags();
  1455.       if (EXPERIMENT_FLAGS) {
  1456.         flagsFn(EXPERIMENT_FLAGS);
  1457.         flagsFn(flagsForced());
  1458.       }
  1459.     }
  1460.  
  1461.     window._ytConfigHacks.add((config_)=>{
  1462.       const EXPERIMENT_FLAGS = config_.EXPERIMENT_FLAGS;
  1463.       if (EXPERIMENT_FLAGS) uf(EXPERIMENT_FLAGS);
  1464.     });
  1465.  
  1466.     uf();
  1467.  
  1468.   })();
  1469.  
  1470.   let kptPF = null;
  1471.   const emojiPrefetched = new Set();
  1472.   const authorPhotoPrefetched = new Set();
  1473.  
  1474.   function linker(link, rel, href, _as) {
  1475.     return new Promise(resolve => {
  1476.       if (!link) link = document.createElement('link');
  1477.       link.rel = rel;
  1478.       if (_as) link.setAttribute('as', _as);
  1479.       link.onload = function () {
  1480.         resolve({
  1481.           link: this,
  1482.           success: true
  1483.         })
  1484.         this.remove();
  1485.       };
  1486.       link.onerror = function () {
  1487.         resolve({
  1488.           link: this,
  1489.           success: false
  1490.         });
  1491.         this.remove();
  1492.       };
  1493.       link.href = href;
  1494.       document.head.appendChild(link);
  1495.       link = null;
  1496.     });
  1497.   }
  1498.  
  1499.  
  1500.  
  1501.   const cleanContext = async (win) => {
  1502.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1503.     try {
  1504.       let mx = 16; // MAX TRIAL
  1505.       const frameId = 'vanillajs-iframe-v1';
  1506.       /** @type {HTMLIFrameElement | null} */
  1507.       let frame = document.getElementById(frameId);
  1508.       let removeIframeFn = null;
  1509.       if (!frame) {
  1510.         frame = document.createElement('iframe');
  1511.         frame.id = frameId;
  1512.         const blobURL = typeof webkitCancelAnimationFrame === 'function' ? (frame.src = URL.createObjectURL(new Blob([], { type: 'text/html' }))) : null; // avoid Brave Crash
  1513.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1514.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1515.         n.appendChild(frame);
  1516.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1517.         const root = document.documentElement;
  1518.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1519.         if (blobURL) Promise.resolve().then(() => URL.revokeObjectURL(blobURL));
  1520.  
  1521.         removeIframeFn = (setTimeout) => {
  1522.           const removeIframeOnDocumentReady = (e) => {
  1523.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1524.             win = null;
  1525.             const m = n;
  1526.             n = null;
  1527.             setTimeout(() => m.remove(), 200);
  1528.           }
  1529.           if (document.readyState !== 'loading') {
  1530.             removeIframeOnDocumentReady();
  1531.           } else {
  1532.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1533.           }
  1534.         }
  1535.       }
  1536.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1537.       const fc = frame.contentWindow;
  1538.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1539.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1540.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1541.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1542.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1543.  
  1544.       /** @type {HTMLElement} */
  1545.       const HTMLElementProto = fc.HTMLElement.prototype;
  1546.       /** @type {EventTarget} */
  1547.       const EventTargetProto = fc.EventTarget.prototype;
  1548.       // jsonParseFix = {
  1549.       //   _JSON: fc.JSON, _parse: fc.JSON.parse
  1550.       // }
  1551.       return {
  1552.         ...res,
  1553.         animate: HTMLElementProto.animate,
  1554.         addEventListener: EventTargetProto.addEventListener,
  1555.         removeEventListener: EventTargetProto.removeEventListener
  1556.       };
  1557.     } catch (e) {
  1558.       console.warn(e);
  1559.       return null;
  1560.     }
  1561.   };
  1562.  
  1563.   cleanContext(win).then(__CONTEXT__ => {
  1564.     if (!__CONTEXT__) return null;
  1565.  
  1566.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1567.  
  1568.  
  1569.     let foregroundPromise = null;
  1570.     const foregroundPromiseFn = () => (foregroundPromise = (foregroundPromise || new Promise(resolve => {
  1571.       requestAnimationFrame(() => {
  1572.         foregroundPromise = null;
  1573.         resolve();
  1574.       });
  1575.     })));
  1576.  
  1577.     let playerState = null;
  1578.     let _playerState = null;
  1579.     let lastPlayerProgress = null;
  1580.     let relayCount = 0;
  1581.     let playerEventsByIframeRelay = false;
  1582.     let isPlayProgressTriggered = false;
  1583.     let waitForInitialDataCompletion = 0;
  1584.  
  1585.  
  1586.  
  1587.     let aeConstructor = null;
  1588.  
  1589.     // << __openedChanged82 >>
  1590.     let currentMenuPivotWR = null;
  1591.  
  1592.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1593.     const beforeParticipantsMap = new WeakMap();
  1594.     // << end >>
  1595.  
  1596.  
  1597.  
  1598.     // << if onRegistryReadyForDOMOperations >>
  1599.  
  1600.     let dt0 = Date.now() - 2000;
  1601.     const dateNow = () => Date.now() - dt0;
  1602.     // let lastScroll = 0;
  1603.     // let lastLShow = 0;
  1604.     let lastWheel = 0;
  1605.     let lastMouseDown = 0;
  1606.     let lastMouseUp = 0;
  1607.     let currentMouseDown = false;
  1608.     let lastTouchDown = 0;
  1609.     let lastTouchUp = 0;
  1610.     let currentTouchDown = false;
  1611.     let lastUserInteraction = 0;
  1612.  
  1613.     let scrollChatFn = null;
  1614.  
  1615.     let skipDontRender = true; // true first; false by flushActiveItems_
  1616.     let allowDontRender = null;
  1617.  
  1618.     // ---- #items mutation ----
  1619.     let sk35zResolveFn = null;
  1620.     let firstList = true;
  1621.  
  1622.     // << end >>
  1623.  
  1624.     class RAFHub {
  1625.       constructor() {
  1626.         /** @type {number} */
  1627.         this.startAt = 8170;
  1628.         /** @type {number} */
  1629.         this.counter = 0;
  1630.         /** @type {number} */
  1631.         this.rid = 0;
  1632.         /** @type {Map<number, FrameRequestCallback>} */
  1633.         this.funcs = new Map();
  1634.         const funcs = this.funcs;
  1635.         /** @type {FrameRequestCallback} */
  1636.         this.bCallback = this.mCallback.bind(this);
  1637.         this.pClear = () => funcs.clear();
  1638.         this.keepRAF = false;
  1639.       }
  1640.       /** @param {DOMHighResTimeStamp} highResTime */
  1641.       mCallback(highResTime) {
  1642.         this.rid = 0;
  1643.         Promise.resolve().then(this.pClear);
  1644.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1645.       }
  1646.       /** @param {FrameRequestCallback} f */
  1647.       request(f) {
  1648.         if (this.counter > 1e9) this.counter = 9;
  1649.         let cid = this.startAt + (++this.counter);
  1650.         this.funcs.set(cid, f);
  1651.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1652.         return cid;
  1653.       }
  1654.       /** @param {number} cid */
  1655.       cancel(cid) {
  1656.         cid = +cid;
  1657.         if (cid > 0) {
  1658.           if (cid <= this.startAt) {
  1659.             return cancelAnimationFrame(cid);
  1660.           }
  1661.           if (this.rid > 0) {
  1662.             this.funcs.delete(cid);
  1663.             if (this.funcs.size === 0 && !this.keepRAF) {
  1664.               cancelAnimationFrame(this.rid);
  1665.               this.rid = 0;
  1666.             }
  1667.           }
  1668.         }
  1669.       }
  1670.     }
  1671.  
  1672.     function basePrefetching() {
  1673.  
  1674.       new Promise(resolve => {
  1675.  
  1676.         if (document.readyState !== 'loading') {
  1677.           resolve();
  1678.         } else {
  1679.           win.addEventListener("DOMContentLoaded", resolve, false);
  1680.         }
  1681.  
  1682.       }).then(() => {
  1683.         const hostL1 = [
  1684.           'https://www.youtube.com', 'https://googlevideo.com',
  1685.           'https://googleapis.com', 'https://accounts.youtube.com',
  1686.           'https://www.gstatic.com', 'https://ggpht.com',
  1687.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1688.         ];
  1689.  
  1690.         const hostL2 = [
  1691.           'https://youtube.com',
  1692.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1693.         ];
  1694.  
  1695.         let link = null;
  1696.  
  1697.         function kn() {
  1698.  
  1699.           link = document.createElement('link');
  1700.           if (link.relList && link.relList.supports) {
  1701.             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)
  1702.           } else {
  1703.             kptPF = 0;
  1704.           }
  1705.  
  1706.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1707.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1708.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1709.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1710.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1711.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1712.           console.groupEnd();
  1713.  
  1714.         }
  1715.  
  1716.         for (const h of hostL1) {
  1717.  
  1718.           if (kptPF === null) kn();
  1719.           if (ENABLE_BASE_PREFETCHING) {
  1720.             // if (kptPF & 1) {
  1721.             //   linker(link, 'dns-prefetch', h);
  1722.             //   link = null;
  1723.             // }
  1724.             if (kptPF & 2) {
  1725.               linker(link, 'preconnect', h);
  1726.               link = null;
  1727.             }
  1728.           }
  1729.         }
  1730.  
  1731.         for (const h of hostL2) {
  1732.           if (kptPF === null) kn();
  1733.           if (ENABLE_BASE_PREFETCHING) {
  1734.             if (kptPF & 1) {
  1735.               linker(link, 'dns-prefetch', h);
  1736.               link = null;
  1737.             }
  1738.           }
  1739.         }
  1740.  
  1741.       })
  1742.  
  1743.  
  1744.     }
  1745.  
  1746.     if (DO_LINK_PREFETCH) basePrefetching();
  1747.  
  1748.     const { notifyPath7081 } = (() => {
  1749.       // DO_PARTICIPANT_LIST_HACKS
  1750.  
  1751.       const mutexParticipants = new Mutex();
  1752.  
  1753.       let uvid = 0;
  1754.       let r95dm = 0;
  1755.       let c95dm = -1;
  1756.  
  1757.       const foundMap = (base, content) => {
  1758.         /*
  1759.           let lastSearch = 0;
  1760.           let founds = base.map(baseEntry => {
  1761.             let search = content.indexOf(baseEntry, lastSearch);
  1762.             if (search < 0) return false;
  1763.             lastSearch = search + 1;
  1764.             return true;
  1765.           });
  1766.           return founds;
  1767.         */
  1768.         const contentSet = new Set(content);
  1769.         return base.map(baseEntry => contentSet.has(baseEntry));
  1770.  
  1771.       }
  1772.  
  1773.  
  1774.  
  1775.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1776.  
  1777.         const handler1 = {
  1778.           get(target, prop, receiver) {
  1779.             if (prop === 'object') {
  1780.               return participants; // avoid memory leakage
  1781.             }
  1782.             if (prop === 'type') {
  1783.               return 'splice';
  1784.             }
  1785.             return target[prop];
  1786.           }
  1787.         };
  1788.         const releaser = () => {
  1789.           participants = null;
  1790.         }
  1791.  
  1792.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1793.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1794.  
  1795.         let indexSplices = [];
  1796.         let contentUpdates = [];
  1797.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1798.           if (beforeParticipants[i] === participants[j]) {
  1799.             i++; j++;
  1800.           } else if (idsBefore[i] === idsAfter[j]) {
  1801.             // content changed
  1802.             contentUpdates.push({ indexI: i, indexJ: j })
  1803.             i++; j++;
  1804.           } else {
  1805.             let addedCount = 0;
  1806.             for (let q = j; q < foundsForAfter.length; q++) {
  1807.               if (foundsForAfter[q] === false) addedCount++;
  1808.               else break;
  1809.             }
  1810.             let removedCount = 0;
  1811.             for (let q = i; q < foundsForBefore.length; q++) {
  1812.               if (foundsForBefore[q] === false) removedCount++;
  1813.               else break;
  1814.             }
  1815.             if (!addedCount && !removedCount) {
  1816.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1817.             }
  1818.             indexSplices.push(new Proxy({
  1819.               index: j,
  1820.               addedCount: addedCount,
  1821.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1822.             }, handler1));
  1823.             i += removedCount;
  1824.             j += addedCount;
  1825.           }
  1826.         }
  1827.         foundsForBefore = null;
  1828.         foundsForAfter = null;
  1829.         idsBefore = null;
  1830.         idsAfter = null;
  1831.         beforeParticipants = null;
  1832.         return { indexSplices, contentUpdates, releaser };
  1833.  
  1834.       }
  1835.  
  1836.       /*
  1837.  
  1838.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1839.  
  1840.       VM63631:1 Error
  1841.       at customElements.get.notifyPath (<anonymous>:1:122)
  1842.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1843.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1844.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1845.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1846.       at ju (live_chat_polymer.js:1674:217)
  1847.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1848.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1849.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1850.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1851.  
  1852.       */
  1853.  
  1854.       function convertToIds(participants) {
  1855.         return participants.map(participant => {
  1856.           if (!participant || typeof participant !== 'object') {
  1857.             console.warn('Error(0xFA41): convertToIds', participant);
  1858.             return participant; // just in case
  1859.           }
  1860.           let keys = Object.keys(participant);
  1861.           // liveChatTextMessageRenderer
  1862.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1863.           // liveChatPaidMessageRenderer
  1864.           /*
  1865.  
  1866.             'yt-live-chat-participant-renderer' utilizes the following:
  1867.             authorName.simpleText: string
  1868.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1869.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1870.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1871.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1872.  
  1873.           */
  1874.           if (keys.length !== 1) {
  1875.             console.warn('Error(0xFA42): convertToIds', participant);
  1876.             return participant; // just in case
  1877.           }
  1878.           let key = keys[0];
  1879.           let renderer = (participant[key] || 0);
  1880.           let authorName = (renderer.authorName || 0);
  1881.           let text = `${authorName.simpleText || authorName.text}`
  1882.           let res = participant; // fallback if it is not a vaild entry
  1883.           if (typeof text !== 'string') {
  1884.             console.warn('Error(0xFA53): convertToIds', participant);
  1885.           } else {
  1886.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1887.             if (text.length > 1) res = text;
  1888.           }
  1889.           return res;
  1890.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1891.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1892.         });
  1893.       }
  1894.  
  1895.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1896.         // just update when content is changed.
  1897.         if (p1.authorName !== p2.authorName) return true;
  1898.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1899.         if (p1.authorBadges !== p2.authorBadges) return true;
  1900.         return false;
  1901.       } : (p1, p2) => {
  1902.         // keep integrity all the time.
  1903.         return p1 !== p2; // always true
  1904.       }
  1905.  
  1906.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1907.  
  1908.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1909.           if (path !== "participantsManager.participants") {
  1910.             return this.__notifyPath5036__.apply(this, arguments);
  1911.           }
  1912.           if (c95dm === r95dm) return;
  1913.         } else {
  1914.           const stack = new Error().stack;
  1915.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1916.             return this.__notifyPath5036__.apply(this, arguments);
  1917.           }
  1918.         }
  1919.  
  1920.         if (uvid > 1e8) uvid = uvid % 100;
  1921.         let tid = ++uvid;
  1922.  
  1923.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  1924.         mutexParticipants.lockWith(lockResolve => {
  1925.  
  1926.           const participants00 = cnt.participantsManager.participants;
  1927.  
  1928.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1929.             lockResolve();
  1930.             return;
  1931.           }
  1932.  
  1933.           let doUpdate = false;
  1934.  
  1935.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1936.  
  1937.             if (!participants00.r94dm) {
  1938.               participants00.r94dm = 1;
  1939.               if (++r95dm > 1e9) r95dm = 9;
  1940.               participants00.push = function () {
  1941.                 if (++r95dm > 1e9) r95dm = 9;
  1942.                 return Array.prototype.push.apply(this, arguments);
  1943.               }
  1944.               participants00.pop = function () {
  1945.                 if (++r95dm > 1e9) r95dm = 9;
  1946.                 return Array.prototype.pop.apply(this, arguments);
  1947.               }
  1948.               participants00.shift = function () {
  1949.                 if (++r95dm > 1e9) r95dm = 9;
  1950.                 return Array.prototype.shift.apply(this, arguments);
  1951.               }
  1952.               participants00.unshift = function () {
  1953.                 if (++r95dm > 1e9) r95dm = 9;
  1954.                 return Array.prototype.unshift.apply(this, arguments);
  1955.               }
  1956.               participants00.splice = function () {
  1957.                 if (++r95dm > 1e9) r95dm = 9;
  1958.                 return Array.prototype.splice.apply(this, arguments);
  1959.               }
  1960.               participants00.sort = function () {
  1961.                 if (++r95dm > 1e9) r95dm = 9;
  1962.                 return Array.prototype.sort.apply(this, arguments);
  1963.               }
  1964.               participants00.reverse = function () {
  1965.                 if (++r95dm > 1e9) r95dm = 9;
  1966.                 return Array.prototype.reverse.apply(this, arguments);
  1967.               }
  1968.             }
  1969.  
  1970.             if (c95dm !== r95dm) {
  1971.               c95dm = r95dm;
  1972.               doUpdate = true;
  1973.             }
  1974.  
  1975.           } else {
  1976.             doUpdate = true;
  1977.           }
  1978.  
  1979.           if (!doUpdate) {
  1980.             lockResolve();
  1981.             return;
  1982.           }
  1983.  
  1984.           const participants = participants00.slice(0);
  1985.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  1986.           beforeParticipantsMap.set(cnt, participants);
  1987.  
  1988.           const resPromise = (async () => {
  1989.  
  1990.             if (beforeParticipants.length === 0) {
  1991.               // not error
  1992.               return 0;
  1993.             }
  1994.  
  1995.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  1996.  
  1997.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  1998.             if (beforeParticipants.length !== countOfElements) {
  1999.               // there is somewrong for the cache. - sometimes happen
  2000.               return 0;
  2001.             }
  2002.  
  2003.             const idsBefore = convertToIds(beforeParticipants);
  2004.             const idsAfter = convertToIds(participants);
  2005.  
  2006.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  2007.  
  2008.             let res = 1; // default 1 for no update
  2009.  
  2010.             if (indexSplices.length >= 1) {
  2011.  
  2012.  
  2013.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  2014.               // let p1 = indexSplices[0].removed;
  2015.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  2016.  
  2017.               /* folllow
  2018.                   a.notifyPath(c + ".splices", d);
  2019.                   a.notifyPath(c + ".length", b.length);
  2020.               */
  2021.               // stampDomArraySplices_
  2022.  
  2023.  
  2024.               await new Promise(resolve => {
  2025.                 cnt.resolveForDOMRendering781 = resolve;
  2026.  
  2027.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  2028.                   indexSplices
  2029.                 });
  2030.                 indexSplices = null;
  2031.                 releaser();
  2032.                 releaser = null;
  2033.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  2034.                   participants.length
  2035.                 );
  2036.  
  2037.               });
  2038.  
  2039.               await Promise.resolve(0); // play safe for the change of 'length'
  2040.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  2041.  
  2042.               let wrongSize = participants.length !== countOfElements
  2043.               if (wrongSize) {
  2044.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  2045.                 return 0;
  2046.               }
  2047.  
  2048.               res = 2 | 4;
  2049.  
  2050.             } else {
  2051.  
  2052.               indexSplices = null;
  2053.               releaser();
  2054.               releaser = null;
  2055.  
  2056.               if (participants.length !== countOfElements) {
  2057.                 // other unhandled cases
  2058.                 return 0;
  2059.               }
  2060.  
  2061.             }
  2062.  
  2063.             // participants.length === countOfElements before contentUpdates
  2064.             if (contentUpdates.length >= 1) {
  2065.               for (const contentUpdate of contentUpdates) {
  2066.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  2067.                 if (isChanged) {
  2068.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  2069.                   res |= 4 | 8;
  2070.                 }
  2071.               }
  2072.             }
  2073.             contentUpdates = null;
  2074.  
  2075.             return res;
  2076.  
  2077.  
  2078.           })();
  2079.  
  2080.  
  2081.           resPromise.then(resValue => {
  2082.  
  2083.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  2084.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  2085.             if (resValue === 0) {
  2086.               new Promise(resolve => {
  2087.                 cnt.resolveForDOMRendering781 = resolve;
  2088.                 isLogRequired && console.log("Full Refresh begins");
  2089.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  2090.               }).then(() => {
  2091.                 isLogRequired && console.log("Full Refresh ends");
  2092.                 console.groupEnd();
  2093.               }).then(lockResolve);
  2094.               return;
  2095.             }
  2096.  
  2097.             const delayLockResolve = (resValue & 4) === 4;
  2098.  
  2099.             if (delayLockResolve) {
  2100.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  2101.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  2102.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  2103.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  2104.               isLogRequired && console.groupEnd();
  2105.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2106.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2107.               requestAnimationFrame(lockResolve);
  2108.             } else {
  2109.               lockResolve();
  2110.             }
  2111.  
  2112.           });
  2113.  
  2114.         });
  2115.  
  2116.       }
  2117.  
  2118.       return { notifyPath7081 };
  2119.  
  2120.     })();
  2121.  
  2122.     const whenDefinedMultiple = async (tags) => {
  2123.  
  2124.       const sTags = [...new Set(tags)];
  2125.       const len = sTags.length;
  2126.  
  2127.       const pTags = new Array(len);
  2128.       for (let i = 0; i < len; i++) {
  2129.         pTags[i] = customElements.whenDefined(sTags[i]);
  2130.       }
  2131.  
  2132.       await Promise.all(pTags);
  2133.       pTags.length = 0;
  2134.  
  2135.       return sTags;
  2136.  
  2137.     }
  2138.  
  2139.     const onRegistryReadyForDataManipulation = () => {
  2140.  
  2141.       function dummy5035(a, b, c) { }
  2142.       function dummy411(a, b, c) { }
  2143.  
  2144.  
  2145.  
  2146.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2147.  
  2148.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2149.  
  2150.         const tag = "yt-live-chat-participant-list-renderer";
  2151.         const cProto = getProto(document.createElement(tag));
  2152.         if (!cProto || typeof cProto.attached !== 'function') {
  2153.           // for _registered, proto.attached shall exist when the element is defined.
  2154.           // for controller extraction, attached shall exist when instance creates.
  2155.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2156.           return;
  2157.         }
  2158.  
  2159.  
  2160.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2161.  
  2162.         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'];
  2163.         const fgs = {};
  2164.         for (const key of fgsArr) fgs[key] = undefined;
  2165.  
  2166.         try {
  2167.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2168.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2169.         } catch (e) { }
  2170.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2171.  
  2172.         const canDoReplacement = (() => {
  2173.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2174.             console.warn('YouTube Live Chat Tamer is running.');
  2175.             return;
  2176.           }
  2177.  
  2178.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2179.             console.warn('YouTube Live Chat Tamer is running.');
  2180.             return;
  2181.           }
  2182.  
  2183.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2184.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2185.  
  2186.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2187.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2188.             return;
  2189.           }
  2190.  
  2191.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2192.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2193.             return;
  2194.           }
  2195.  
  2196.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2197.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2198.             return;
  2199.           }
  2200.           return true;
  2201.         })();
  2202.  
  2203.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2204.  
  2205.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2206.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2207.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2208.           const s = fiRSCB.split('.');
  2209.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2210.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2211.           } else {
  2212.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2213.           }
  2214.         } else {
  2215.           console.log("flushRenderStamperComponentBindings_ - not found");
  2216.         }
  2217.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2218.  
  2219.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2220.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2221.           cProto.flushRenderStamperComponentBindings_ = function () {
  2222.             // console.log('flushRenderStamperComponentBindings_')
  2223.             this.flushRenderStamperComponentBindings66_();
  2224.             if (this.resolveForDOMRendering781) {
  2225.               this.resolveForDOMRendering781();
  2226.               this.resolveForDOMRendering781 = null;
  2227.             }
  2228.           };
  2229.         }
  2230.  
  2231.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2232.           const container = ((this || 0).$ || 0).participants;
  2233.           if (!container) return 0;
  2234.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2235.         }
  2236.  
  2237.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2238.  
  2239.         cProto.__attached412__ = cProto.attached;
  2240.         const fpPList = function (hostElement) {
  2241.           const cnt = hostElement.inst || hostElement;
  2242.           if (beforeParticipantsMap.has(cnt)) return;
  2243.           hostElement.classList.add('n9fJ3');
  2244.  
  2245.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2246.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2247.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2248.             return;
  2249.           }
  2250.  
  2251.           groupCollapsed("Participant List attached", "");
  2252.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2253.           //   console.log(123, 'appendChild');
  2254.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2255.           // }
  2256.  
  2257.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2258.           //   console.log(123, 'insertBefore');
  2259.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2260.           // }
  2261.  
  2262.           cnt.__notifyPath5036__ = cnt.notifyPath
  2263.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2264.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2265.           console.log(`initial number of participants: ${participants.length}`);
  2266.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2267.           beforeParticipantsMap.set(cnt, newParticipants);
  2268.           cnt.notifyPath = notifyPath7081;
  2269.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2270.           console.groupEnd();
  2271.         }
  2272.         cProto.attached = function () {
  2273.           fpPList(this.hostElement || this);
  2274.           this.__attached412__.apply(this, arguments);
  2275.         };
  2276.  
  2277.  
  2278.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2279.  
  2280.           /** @type {boolean | (()=>boolean)} */
  2281.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2282.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2283.  
  2284.             let lastMessageDate = 0;
  2285.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2286.  
  2287.             cProto.stampDomArray_ = function (...args) {
  2288.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2289.                 if (typeof toUseMaintainStableList === 'function') {
  2290.                   toUseMaintainStableList = toUseMaintainStableList();
  2291.                 }
  2292.                 args[5] = toUseMaintainStableList;
  2293.                 let currentDate = Date.now();
  2294.                 if (currentDate - lastMessageDate > 440) {
  2295.                   lastMessageDate = currentDate;
  2296.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2297.                 }
  2298.               }
  2299.               return this.stampDomArray66_.apply(this, args);
  2300.             }
  2301.  
  2302.             cProto.stampDomArray_.nIegT = 1;
  2303.  
  2304.           }
  2305.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2306.         } else {
  2307.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2308.         }
  2309.  
  2310.         console.groupEnd();
  2311.  
  2312.         if (onPageElements.length >= 1) {
  2313.           for (const s of onPageElements) {
  2314.             if ((s.inst || s).isAttached === true) {
  2315.               fpPList(s);
  2316.             }
  2317.           }
  2318.         }
  2319.  
  2320.       }).catch(console.warn);
  2321.  
  2322.     };
  2323.  
  2324.     if (DO_PARTICIPANT_LIST_HACKS) {
  2325.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2326.     }
  2327.  
  2328.  
  2329.  
  2330.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2331.  
  2332.  
  2333.  
  2334.  
  2335.     const bnForDelayChatOccurrence = () => {
  2336.  
  2337.       document.addEventListener('animationstart', (evt) => {
  2338.  
  2339.         if (evt.animationName === 'dontRenderAnimation') {
  2340.           evt.target.classList.remove('dont-render');
  2341.           if (scrollChatFn) scrollChatFn();
  2342.         }
  2343.  
  2344.       }, true);
  2345.  
  2346.       const f = (elm) => {
  2347.         if (elm && elm.nodeType === 1) {
  2348.           if (!skipDontRender && allowDontRender === true) {
  2349.             // innerTextFixFn();
  2350.             elm.classList.add('dont-render');
  2351.           }
  2352.         }
  2353.       }
  2354.  
  2355.       Node.prototype.__appendChild931__ = function (a) {
  2356.         a = dr(a);
  2357.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2358.           if (a && a.nodeType === 1) f(a);
  2359.           else if (a instanceof DocumentFragment) {
  2360.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2361.               f(n);
  2362.             }
  2363.           }
  2364.         }
  2365.       }
  2366.  
  2367.       Node.prototype.__appendChild932__ = function () {
  2368.         this.__appendChild931__.apply(this, arguments);
  2369.         return Node.prototype.appendChild.apply(this, arguments);
  2370.       }
  2371.  
  2372.  
  2373.     };
  2374.  
  2375.     const watchUserCSS = () => {
  2376.  
  2377.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2378.  
  2379.       const getElemFromWR = (nr) => {
  2380.         const n = kRef(nr);
  2381.         if (n && n.isConnected) return n;
  2382.         return null;
  2383.       }
  2384.  
  2385.       const clearContentVisibilitySizing = () => {
  2386.         Promise.resolve().then(() => {
  2387.  
  2388.           const e = document.querySelector('#show-more[disabled]');
  2389.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2390.  
  2391.           let lastVisibleItemWR = null;
  2392.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2393.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2394.             elm.setAttribute('wSr93', '');
  2395.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2396.           }
  2397.           requestAnimationFrame(() => {
  2398.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2399.             if (btnShowMore) btnShowMore.click();
  2400.             else {
  2401.               // would not work if switch it frequently
  2402.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2403.               if (lastVisibleItem) {
  2404.  
  2405.                 Promise.resolve()
  2406.                   .then(() => lastVisibleItem.scrollIntoView())
  2407.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2408.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2409.                   .catch(e => { }) // break the chain when method not callable
  2410.  
  2411.               }
  2412.             }
  2413.           });
  2414.  
  2415.         });
  2416.  
  2417.       }
  2418.  
  2419.       const mutObserver = new MutationObserver((mutations) => {
  2420.         for (const mutation of mutations) {
  2421.           if ((mutation.addedNodes || 0).length >= 1) {
  2422.             for (const addedNode of mutation.addedNodes) {
  2423.               if (addedNode.nodeName === 'STYLE') {
  2424.                 clearContentVisibilitySizing();
  2425.                 return;
  2426.               }
  2427.             }
  2428.           }
  2429.           if ((mutation.removedNodes || 0).length >= 1) {
  2430.             for (const removedNode of mutation.removedNodes) {
  2431.               if (removedNode.nodeName === 'STYLE') {
  2432.                 clearContentVisibilitySizing();
  2433.                 return;
  2434.               }
  2435.             }
  2436.           }
  2437.         }
  2438.       });
  2439.  
  2440.       mutObserver.observe(document.documentElement, {
  2441.         childList: true,
  2442.         subtree: false
  2443.       });
  2444.       mutObserver.observe(document.head, {
  2445.         childList: true,
  2446.         subtree: false
  2447.       });
  2448.       mutObserver.observe(document.body, {
  2449.         childList: true,
  2450.         subtree: false
  2451.       });
  2452.  
  2453.     }
  2454.  
  2455.  
  2456.     class WillChangeController {
  2457.       constructor(itemScroller, willChangeValue) {
  2458.         this.element = itemScroller;
  2459.         this.counter = 0;
  2460.         this.active = false;
  2461.         this.willChangeValue = willChangeValue;
  2462.       }
  2463.  
  2464.       beforeOper() {
  2465.         if (!this.active) {
  2466.           this.active = true;
  2467.           this.element.style.willChange = this.willChangeValue;
  2468.         }
  2469.         this.counter++;
  2470.       }
  2471.  
  2472.       afterOper() {
  2473.         const c = this.counter;
  2474.         requestAnimationFrame(() => {
  2475.           if (c === this.counter) {
  2476.             this.active = false;
  2477.             this.element.style.willChange = '';
  2478.           }
  2479.         });
  2480.       }
  2481.  
  2482.       release() {
  2483.         const element = this.element;
  2484.         this.element = null;
  2485.         this.counter = 1e16;
  2486.         this.active = false;
  2487.         try {
  2488.           element.style.willChange = '';
  2489.         } catch (e) { }
  2490.       }
  2491.  
  2492.     }
  2493.  
  2494.  
  2495.     const skzData = (skz) => skz.data = {
  2496.       "message": {
  2497.         "runs": [
  2498.           {
  2499.             "text": "em2o"
  2500.           },
  2501.           {
  2502.             "emoji": {
  2503.               "emojiId": "cm35z",
  2504.               "shortcuts": [
  2505.                 ":_s:",
  2506.                 ":s:"
  2507.               ],
  2508.               "searchTerms": [
  2509.                 "_s",
  2510.                 "s"
  2511.               ],
  2512.               "image": {
  2513.                 "thumbnails": [
  2514.                   {
  2515.                     "url": dummyImgURL,
  2516.                     "width": 48,
  2517.                     "height": 48
  2518.                   }
  2519.                 ],
  2520.                 "accessibility": {
  2521.                   "accessibilityData": {
  2522.                     "label": "s"
  2523.                   }
  2524.                 }
  2525.               },
  2526.               "isCustomEmoji": true
  2527.             }
  2528.           },
  2529.           {
  2530.             "text": "ji"
  2531.           }
  2532.         ]
  2533.       },
  2534.       "authorName": {
  2535.         "simpleText": "N"
  2536.       },
  2537.       "authorPhoto": {
  2538.         "thumbnails": [
  2539.           {
  2540.             "url": dummyImgURL,
  2541.             "width": 64,
  2542.             "height": 64
  2543.           }
  2544.         ]
  2545.       },
  2546.       "contextMenuEndpoint": {
  2547.         "commandMetadata": {
  2548.           "webCommandMetadata": {
  2549.             "ignoreNavigation": true
  2550.           }
  2551.         },
  2552.         "liveChatItemContextMenuEndpoint": {
  2553.           "params": "123=="
  2554.         }
  2555.       },
  2556.       "id": "sk35z",
  2557.       "timestampUsec": "1232302352350000",
  2558.       "authorBadges": [
  2559.         {
  2560.           "liveChatAuthorBadgeRenderer": {
  2561.             "customThumbnail": {
  2562.               "thumbnails": [
  2563.                 {
  2564.                   "url": dummyImgURL,
  2565.                   "width": 16,
  2566.                   "height": 16
  2567.                 },
  2568.                 {
  2569.                   "url": dummyImgURL,
  2570.                   "width": 32,
  2571.                   "height": 32
  2572.                 }
  2573.               ]
  2574.             },
  2575.             "tooltip": "T",
  2576.             "accessibility": {
  2577.               "accessibilityData": {
  2578.                 "label": "E"
  2579.               }
  2580.             }
  2581.           }
  2582.         }
  2583.       ],
  2584.       "authorExternalChannelId": "A",
  2585.       "contextMenuAccessibility": {
  2586.         "accessibilityData": {
  2587.           "label": "E"
  2588.         }
  2589.       },
  2590.       "timestampText": {
  2591.         "simpleText": "0:43"
  2592.       }
  2593.     };
  2594.  
  2595.  
  2596.  
  2597.     const { lcRendererElm, visObserver } = (() => {
  2598.  
  2599.  
  2600.  
  2601.       let lcRendererWR = null;
  2602.  
  2603.       const lcRendererElm = () => {
  2604.         let lcRenderer = kRef(lcRendererWR);
  2605.         if (!lcRenderer || !lcRenderer.isConnected) {
  2606.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2607.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2608.         }
  2609.         return lcRenderer;
  2610.       };
  2611.  
  2612.  
  2613.       let hasFirstShowMore = false;
  2614.  
  2615.       const visObserverFn = (entry) => {
  2616.  
  2617.         const target = entry.target;
  2618.         if (!target) return;
  2619.         // if(target.classList.contains('dont-render')) return;
  2620.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2621.         // const h = entry.boundingClientRect.height;
  2622.         /*
  2623.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2624.             // e.g. under fullscreen. the element created but not rendered.
  2625.             target.setAttribute('wSr93', '');
  2626.             return;
  2627.         }
  2628.         */
  2629.         if (isVisible) {
  2630.           // target.style.setProperty('--wsr94', h + 'px');
  2631.           target.setAttribute('wSr93', 'visible');
  2632.           if (nNextElem(target) === null) {
  2633.  
  2634.             // firstVisibleItemDetected = true;
  2635.             /*
  2636.               if (dateNow() - lastScroll < 80) {
  2637.                   lastLShow = 0;
  2638.                   lastScroll = 0;
  2639.                   Promise.resolve().then(clickShowMore);
  2640.               } else {
  2641.                   lastLShow = dateNow();
  2642.               }
  2643.               */
  2644.             // lastLShow = dateNow();
  2645.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2646.             // implement inside visObserver to ensure there is sufficient delay
  2647.             hasFirstShowMore = true;
  2648.             requestAnimationFrame(() => {
  2649.               // foreground page
  2650.               // page visibly ready -> load the latest comments at initial loading
  2651.               const lcRenderer = lcRendererElm();
  2652.               if (lcRenderer) {
  2653.                 (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2654.               }
  2655.             });
  2656.           }
  2657.         }
  2658.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2659.  
  2660.           // target.style.setProperty('--wsr94', h + 'px');
  2661.           target.setAttribute('wSr93', 'hidden');
  2662.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2663.  
  2664.       }
  2665.  
  2666.  
  2667.  
  2668.       const visObserver = new IntersectionObserver((entries) => {
  2669.  
  2670.         for (const entry of entries) {
  2671.  
  2672.           Promise.resolve(entry).then(visObserverFn);
  2673.  
  2674.         }
  2675.  
  2676.       }, {
  2677.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2678.         rootMargin: "0px",
  2679.         threshold: [0.05, 0.95],
  2680.       });
  2681.  
  2682.  
  2683.       return { lcRendererElm, visObserver }
  2684.  
  2685.  
  2686.     })();
  2687.  
  2688.     const { setupMutObserver } = (() => {
  2689.  
  2690.       const mutFn = (items) => {
  2691.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2692.           if (node.hasAttribute('wSr93')) break;
  2693.           node.setAttribute('wSr93', '');
  2694.           visObserver.observe(node);
  2695.         }
  2696.       }
  2697.  
  2698.       const mutObserver = new MutationObserver((mutations) => {
  2699.         const items = (mutations[0] || 0).target;
  2700.         if (!items) return;
  2701.         if (sk35zResolveFn) {
  2702.           sk35zResolveFn();
  2703.           sk35zResolveFn = null;
  2704.         }
  2705.         mutFn(items);
  2706.       });
  2707.  
  2708.       const setupMutObserver = (m2) => {
  2709.         scrollChatFn = null;
  2710.         mutObserver.disconnect();
  2711.         mutObserver.takeRecords();
  2712.         if (m2) {
  2713.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2714.           if (typeof m2.__appendChild932__ === 'function') {
  2715.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2716.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2717.           }
  2718.           mutObserver.observe(m2, {
  2719.             childList: true,
  2720.             subtree: false
  2721.           });
  2722.           mutFn(m2);
  2723.  
  2724.           const isFirstList = firstList;
  2725.           firstList = false;
  2726.  
  2727.           if (ENABLE_OVERFLOW_ANCHOR) {
  2728.  
  2729.             let items = m2;
  2730.             let addedAnchor = false;
  2731.             if (items) {
  2732.               if (items.nextElementSibling === null) {
  2733.                 items.classList.add('no-anchor');
  2734.                 addedAnchor = true;
  2735.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2736.               }
  2737.             }
  2738.  
  2739.  
  2740.  
  2741.             if (addedAnchor) {
  2742.               nodeParent(m2).classList.add('no-anchor'); // required
  2743.             }
  2744.  
  2745.           }
  2746.  
  2747.           // let div = document.createElement('div');
  2748.           // div.id = 'qwcc';
  2749.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2750.           // bufferRegion =div;
  2751.  
  2752.           // buffObserver.takeRecords();
  2753.           // buffObserver.disconnect();
  2754.           // buffObserver.observe(div,  {
  2755.           //     childList: true,
  2756.           //     subtree: false
  2757.           // })
  2758.  
  2759.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2760.  
  2761.             promiseForCustomYtElementsReady.then(() => {
  2762.  
  2763.               customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2764.  
  2765.  
  2766.  
  2767.  
  2768.                 setTimeout(() => {
  2769.  
  2770.                   /** @type {HTMLTemplateElement} */
  2771.                   let skz = document.createElement('yt-live-chat-text-message-renderer');
  2772.  
  2773.                   let cz1 = null;
  2774.  
  2775.                   if (skz && 'data' in skz && 'attached' in skz) {
  2776.  
  2777.                     const deferredZy1 = new Promise(resolve => {
  2778.  
  2779.                       skz.attached = function () {
  2780.                         cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2781.                         resolve(skz.textContent);
  2782.                       }
  2783.                       skz.detached = function () {
  2784.  
  2785.                       }
  2786.  
  2787.                     });
  2788.                     skz.id = 'sk35z';
  2789.                     skzData(skz);
  2790.  
  2791.  
  2792.                     sk35zResolveFn = null;
  2793.                     const deferredMutation = new Promise(resolve => {
  2794.                       sk35zResolveFn = resolve;
  2795.                       HTMLElement.prototype.appendChild.call(m2, skz);
  2796.                     });
  2797.  
  2798.                     Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2799.                       const [zy1, _] = res;
  2800.                       function fn() {
  2801.                         const zy2 = skz.textContent;
  2802.                         const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2803.                         if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2804.                           allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2805.                         }
  2806.                         if (allowDontRender === false) {
  2807.  
  2808.                           console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2809.                             "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2810.                             "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2811.                           );
  2812.  
  2813.                           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');
  2814.  
  2815.                           console.groupEnd();
  2816.                         } else if (allowDontRender === true) {
  2817.                           return true;
  2818.                         }
  2819.                       }
  2820.                       await new Promise(r => setTimeout(r, 1));
  2821.                       if (fn()) {
  2822.                         await new Promise(r => requestAnimationFrame(r));
  2823.                         if (fn()) {
  2824.                           skz.remove();
  2825.                           skz.textContent = '';
  2826.                           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2827.                         }
  2828.                       }
  2829.                     });
  2830.  
  2831.                   }
  2832.  
  2833.                 }, 1);
  2834.  
  2835.               }).catch(console.warn);
  2836.  
  2837.             })
  2838.  
  2839.           }
  2840.  
  2841.  
  2842.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2843.  
  2844.             (() => {
  2845.  
  2846.               const tag = 'yt-iframed-player-events-relay'
  2847.               const dummy = document.createElement(tag);
  2848.  
  2849.               const cProto = getProto(dummy);
  2850.               if (!cProto || !cProto.handlePostMessage_) {
  2851.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2852.                 return;
  2853.               }
  2854.  
  2855.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2856.  
  2857.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2858.  
  2859.                 cProto.handlePostMessage67_ = function (a) {
  2860.  
  2861.                   const da = a.data;
  2862.  
  2863.  
  2864.  
  2865.                   playEventsStack = playEventsStack.then(() => {
  2866.  
  2867.  
  2868.  
  2869.                     if ('yt-player-state-change' in da) {
  2870.  
  2871.                       const qc = da['yt-player-state-change'];
  2872.  
  2873.  
  2874.                       let isQcChanged = false;
  2875.  
  2876.                       if (qc === 2) { isQcChanged = qc !== _playerState; _playerState = 2; relayCount = 0; } // paused
  2877.                       else if (qc === 3) { isQcChanged = qc !== _playerState; _playerState = 3; } // playing
  2878.                       else if (qc === 1) { isQcChanged = qc !== _playerState; _playerState = 1; } // playing
  2879.  
  2880.  
  2881.                       if ((isQcChanged) && playerState !== _playerState) {
  2882.                         playerEventsByIframeRelay = true;
  2883.                         onPlayStateChangePromise = new Promise((resolve) => {
  2884.                           let k = _playerState;
  2885.                           foregroundPromiseFn().then(() => {
  2886.                             if (k === _playerState && playerState !== _playerState) playerState = _playerState;
  2887.                             onPlayStateChangePromise = null;
  2888.                             resolve();
  2889.                           })
  2890.                         }).catch(console.warn);
  2891.  
  2892.                       }
  2893.  
  2894.                     } else if ('yt-player-video-progress' in da) {
  2895.                       const vp = da['yt-player-video-progress'];
  2896.  
  2897.  
  2898.                       relayCount++;
  2899.                       lastPlayerProgress = vp > 0 ? vp : 0;
  2900.  
  2901.  
  2902.                       if (relayPromise && vp > 0 && relayCount >= 2) {
  2903.                         if (onPlayStateChangePromise) {
  2904.                           onPlayStateChangePromise.then(() => {
  2905.                             relayPromise && relayPromise.resolve();
  2906.                             relayPromise = null;
  2907.                           })
  2908.                         } else {
  2909.                           relayPromise.resolve();
  2910.                           relayPromise = null;
  2911.                         }
  2912.                       }
  2913.  
  2914.  
  2915.  
  2916.                     }
  2917.  
  2918.  
  2919.  
  2920.  
  2921.  
  2922.  
  2923.                     return this.handlePostMessage66_(a);
  2924.  
  2925.  
  2926.  
  2927.                   }).catch(console.warn);
  2928.  
  2929.                 }
  2930.  
  2931.  
  2932.                 cProto.handlePostMessage_ = function (a) {
  2933.  
  2934.  
  2935.                   const da = (a || 0).data || 0;
  2936.  
  2937.                   if (typeof da !== 'object') return;
  2938.  
  2939.                   if (waitForInitialDataCompletion === 1) return;
  2940.  
  2941.                   if (!isPlayProgressTriggered) {
  2942.                     isPlayProgressTriggered = true;
  2943.  
  2944.                     if ('yt-player-video-progress' in da) {
  2945.                       waitForInitialDataCompletion = 1;
  2946.  
  2947.                       const wrapWith = (data) => {
  2948.                         const { origin } = a;
  2949.                         return {
  2950.                           origin,
  2951.                           data
  2952.                         };
  2953.                       }
  2954.  
  2955.                       this.handlePostMessage67_(wrapWith({
  2956.                         "yt-iframed-parent-ready": true
  2957.                       }));
  2958.  
  2959.  
  2960.  
  2961.                       playEventsStack = playEventsStack.then(() => {
  2962.  
  2963.  
  2964.  
  2965.                         const lcr = document.querySelector('yt-live-chat-renderer');
  2966.                         const psc = document.querySelector("yt-player-seek-continuation");
  2967.                         if (lcr && psc && lcr.replayBuffer_) {
  2968.  
  2969.  
  2970.                           const rbProgress = lcr.replayBuffer_.lastVideoOffsetTimeMsec;
  2971.                           const daProgress = da['yt-player-video-progress'] * 1000
  2972.                           // document.querySelector('yt-live-chat-renderer').playerProgressChanged_(1e-5);
  2973.  
  2974.  
  2975.                           const front_ = (lcr.replayBuffer_.replayQueue || 0).front_;
  2976.                           const back_ = (lcr.replayBuffer_.replayQueue || 0).back_;
  2977.  
  2978.  
  2979.                           // console.log(deepCopy( front_))
  2980.                           // console.log(deepCopy( back_))
  2981.                           // console.log(rbProgress, daProgress, )
  2982.                           if (front_ && back_ && rbProgress > daProgress && back_.length > 2 && back_.some(e => e && +e.videoOffsetTimeMsec > daProgress) && back_.some(e => e && +e.videoOffsetTimeMsec < daProgress)) {
  2983.                             // no action
  2984.                             // console.log('ss1')
  2985.                           } else if (rbProgress < daProgress + 3400 && rbProgress > daProgress - 1200) {
  2986.                             //  daProgress - 1200 < rbProgress < daProgress + 3400
  2987.                             // console.log('ss2')
  2988.                           } else {
  2989.  
  2990.                             // console.log('ss3')
  2991.                             // lcr.replayBuffer_.replayQueue.back_.length= 0;
  2992.                             // lcr.replayBuffer_.replayQueue.front_.length= 0;
  2993.  
  2994.                             // lcr
  2995.                             lcr.previousProgressSec = 1E-5;
  2996.                             // lcr._setIsSeeking(!0),
  2997.                             lcr.replayBuffer_.clear()
  2998.                             psc.fireSeekContinuation_(da['yt-player-video-progress']);
  2999.                           }
  3000.  
  3001.                         }
  3002.  
  3003.  
  3004.                         waitForInitialDataCompletion = 2;
  3005.  
  3006.                         this.handlePostMessage_(a);
  3007.  
  3008.  
  3009.                       }).catch(console.warn);
  3010.  
  3011.  
  3012.  
  3013.                       return;
  3014.  
  3015.                     }
  3016.  
  3017.                   }
  3018.  
  3019.  
  3020.  
  3021.                   this.handlePostMessage67_(a);
  3022.  
  3023.  
  3024.  
  3025.                 }
  3026.  
  3027.               }
  3028.  
  3029.  
  3030.             })();
  3031.  
  3032.           }
  3033.  
  3034.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  3035.             setTimeout(() => {
  3036.               if (!hasTimerModified) return;
  3037.               const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  3038.               if (!tickerRenderer) return;
  3039.  
  3040.               const items = (tickerRenderer.$ || 0).items || 0;
  3041.               if (!items) return;
  3042.               const template = document.createElement('template');
  3043.               template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  3044.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  3045.                 dimmed="" [dummy777]>
  3046.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  3047.                   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));">
  3048.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  3049.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  3050.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  3051.                       style="background-color: transparent;" loaded=""><img id="img"
  3052.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  3053.                         src="${dummyImgURL}"></yt-img-shadow777>
  3054.  
  3055.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  3056.                   </div>
  3057.                 </div>
  3058.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  3059.               const dummy777 = template.content.firstElementChild;
  3060.               items.appendChild(dummy777);
  3061.               Promise.resolve(dummy777).then((dummy777) => {
  3062.                 let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  3063.                 if (container.isConnected === true) {
  3064.  
  3065.                   const evaluated = `${getComputedStyle(container).background}`;
  3066.  
  3067.                   container = null;
  3068.                   dummy777.remove();
  3069.                   dummy777.textContent = '';
  3070.                   dummy777 = null;
  3071.  
  3072.                   if (evaluated.indexOf('0.') < 4) {
  3073.  
  3074.                     // not fulfilling
  3075.                     // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3076.  
  3077.                     console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3078.                       "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3079.                       "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3080.                     );
  3081.                     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');
  3082.                     console.groupEnd();
  3083.  
  3084.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  3085.  
  3086.                   } else {
  3087.  
  3088.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3089.                   }
  3090.                 }
  3091.               });
  3092.  
  3093.             }, 800);
  3094.           }
  3095.  
  3096.         }
  3097.       }
  3098.  
  3099.       return { setupMutObserver };
  3100.  
  3101.  
  3102.  
  3103.     })();
  3104.  
  3105.     const setupEvents = () => {
  3106.  
  3107.  
  3108.       let scrollCount = 0;
  3109.  
  3110.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  3111.  
  3112.  
  3113.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  3114.  
  3115.         const lcRenderer = lcRendererElm();
  3116.         if (lcRenderer) {
  3117.           const cnt = (lcRenderer.inst || lcRenderer);
  3118.           if (!cnt.hasUserJustInteracted11_) return;
  3119.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  3120.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  3121.           }
  3122.         }
  3123.  
  3124.       }
  3125.  
  3126.       document.addEventListener('scroll', (evt) => {
  3127.         if (!evt || !evt.isTrusted) return;
  3128.         // lastScroll = dateNow();
  3129.         if (++scrollCount > 1e9) scrollCount = 9;
  3130.       }, passiveCapture); // support contain => support passive
  3131.  
  3132.       let lastScrollCount = -1;
  3133.       document.addEventListener('wheel', (evt) => {
  3134.         if (!evt || !evt.isTrusted) return;
  3135.         if (lastScrollCount === scrollCount) return;
  3136.         lastScrollCount = scrollCount;
  3137.         lastWheel = dateNow();
  3138.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3139.       }, passiveCapture); // support contain => support passive
  3140.  
  3141.       document.addEventListener('mousedown', (evt) => {
  3142.         if (!evt || !evt.isTrusted) return;
  3143.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3144.         lastMouseDown = dateNow();
  3145.         currentMouseDown = true;
  3146.         lastUserInteraction = lastMouseDown;
  3147.       }, passiveCapture);
  3148.  
  3149.       document.addEventListener('pointerdown', (evt) => {
  3150.         if (!evt || !evt.isTrusted) return;
  3151.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3152.         lastMouseDown = dateNow();
  3153.         currentMouseDown = true;
  3154.         lastUserInteraction = lastMouseDown;
  3155.       }, passiveCapture);
  3156.  
  3157.       document.addEventListener('click', (evt) => {
  3158.         if (!evt || !evt.isTrusted) return;
  3159.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3160.         lastMouseDown = lastMouseUp = dateNow();
  3161.         currentMouseDown = false;
  3162.         lastUserInteraction = lastMouseDown;
  3163.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3164.       }, passiveCapture);
  3165.  
  3166.       document.addEventListener('tap', (evt) => {
  3167.         if (!evt || !evt.isTrusted) return;
  3168.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3169.         lastMouseDown = lastMouseUp = dateNow();
  3170.         currentMouseDown = false;
  3171.         lastUserInteraction = lastMouseDown;
  3172.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3173.       }, passiveCapture);
  3174.  
  3175.  
  3176.       document.addEventListener('mouseup', (evt) => {
  3177.         if (!evt || !evt.isTrusted) return;
  3178.         if (currentMouseDown) {
  3179.           lastMouseUp = dateNow();
  3180.           currentMouseDown = false;
  3181.           lastUserInteraction = lastMouseUp;
  3182.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3183.         }
  3184.       }, passiveCapture);
  3185.  
  3186.  
  3187.       document.addEventListener('pointerup', (evt) => {
  3188.         if (!evt || !evt.isTrusted) return;
  3189.         if (currentMouseDown) {
  3190.           lastMouseUp = dateNow();
  3191.           currentMouseDown = false;
  3192.           lastUserInteraction = lastMouseUp;
  3193.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3194.         }
  3195.       }, passiveCapture);
  3196.  
  3197.       document.addEventListener('touchstart', (evt) => {
  3198.         if (!evt || !evt.isTrusted) return;
  3199.         lastTouchDown = dateNow();
  3200.         currentTouchDown = true;
  3201.         lastUserInteraction = lastTouchDown;
  3202.       }, passiveCapture);
  3203.  
  3204.       document.addEventListener('touchmove', (evt) => {
  3205.         if (!evt || !evt.isTrusted) return;
  3206.         lastTouchDown = dateNow();
  3207.         currentTouchDown = true;
  3208.         lastUserInteraction = lastTouchDown;
  3209.       }, passiveCapture);
  3210.  
  3211.       document.addEventListener('touchend', (evt) => {
  3212.         if (!evt || !evt.isTrusted) return;
  3213.         if (currentTouchDown) {
  3214.           lastTouchUp = dateNow();
  3215.           currentTouchDown = false;
  3216.           lastUserInteraction = lastTouchUp;
  3217.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3218.         }
  3219.       }, passiveCapture);
  3220.  
  3221.       document.addEventListener('touchcancel', (evt) => {
  3222.         if (!evt || !evt.isTrusted) return;
  3223.         if (currentTouchDown) {
  3224.           lastTouchUp = dateNow();
  3225.           currentTouchDown = false;
  3226.           lastUserInteraction = lastTouchUp;
  3227.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3228.         }
  3229.       }, passiveCapture);
  3230.  
  3231.  
  3232.     }
  3233.  
  3234.     const getTimestampUsec = (itemRenderer)=>{
  3235.       if (itemRenderer && 'timestampUsec' in itemRenderer) {
  3236.         return itemRenderer.timestampUsec
  3237.       } else if (itemRenderer && itemRenderer.showItemEndpoint) {
  3238.         const messageRenderer = ((itemRenderer.showItemEndpoint.showLiveChatItemEndpoint || 0).renderer || 0);
  3239.         if (messageRenderer) {
  3240.  
  3241.           const messageRendererKey = firstObjectKey(messageRenderer);
  3242.           if (messageRendererKey && messageRenderer[messageRendererKey]) {
  3243.             const messageRendererData = messageRenderer[messageRendererKey];
  3244.             if (messageRendererData && 'timestampUsec' in messageRendererData) {
  3245.               return messageRendererData.timestampUsec
  3246.             }
  3247.           }
  3248.         }
  3249.       }
  3250.       return null;
  3251.     }
  3252.  
  3253.     const onRegistryReadyForDOMOperations = () => {
  3254.  
  3255.       let firstCheckedOnYtInit = false;
  3256.  
  3257.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  3258.  
  3259.       const mightFirstCheckOnYtInit = () => {
  3260.         if (firstCheckedOnYtInit) return;
  3261.         firstCheckedOnYtInit = true;
  3262.  
  3263.         if (!document.body || !document.head) return;
  3264.         if (!assertorURL()) return;
  3265.  
  3266.         addCssManaged();
  3267.  
  3268.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  3269.         if (efsContainer && efsContainer.parentNode !== document.body) {
  3270.           document.body.appendChild(efsContainer);
  3271.         }
  3272.  
  3273.       };
  3274.  
  3275.       if (!assertorURL()) return;
  3276.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3277.  
  3278.       if (document.documentElement && document.head) {
  3279.         addCssManaged();
  3280.       }
  3281.       // console.log(document.body===null)
  3282.  
  3283.       if (ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION) {
  3284.         customElements.whenDefined('yt-live-chat-renderer').then(() => {
  3285.  
  3286.           const tag = "yt-live-chat-renderer"
  3287.           const dummy = document.createElement(tag);
  3288.  
  3289.           const cProto = getProto(dummy);
  3290.           if (!cProto || !cProto.attached) {
  3291.             console.warn(`proto.attached for ${tag} is unavailable.`);
  3292.             return;
  3293.           }
  3294.  
  3295.           mightFirstCheckOnYtInit();
  3296.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-renderer hacks");
  3297.           console.log("[Begin]");
  3298.  
  3299.  
  3300.  
  3301.  
  3302.  
  3303.  
  3304.           if (typeof cProto.playerProgressChanged_ === 'function' && !cProto.playerProgressChanged32_) {
  3305.  
  3306.             cProto.playerProgressChanged32_ = cProto.playerProgressChanged_;
  3307.  
  3308.             const pop078 = function () {
  3309.               const r = this.pop78();
  3310.  
  3311.               if (r && (r.actions || 0).length >= 1 && r.videoOffsetTimeMsec) {
  3312.                 for (const action of r.actions) {
  3313.  
  3314.                   const itemActionKey = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3315.                   if (itemActionKey) {
  3316.  
  3317.                     const itemAction = action[itemActionKey];
  3318.                     const item = (itemAction || 0).item;
  3319.                     if (typeof item === 'object') {
  3320.  
  3321.                       const rendererKey = firstObjectKey(item);
  3322.                       if (rendererKey) {
  3323.                         const renderer = item[rendererKey];
  3324.                         if (renderer && typeof renderer === 'object') {
  3325.                           renderer.__videoOffsetTimeMsec__ = r.videoOffsetTimeMsec;
  3326.                           renderer.__progressAt__ = playerProgressChangedArg1;
  3327.                         }
  3328.  
  3329.                       }
  3330.  
  3331.                     }
  3332.                   }
  3333.                 }
  3334.               }
  3335.               return r;
  3336.             }
  3337.  
  3338.             cProto.playerProgressChanged_ = function (a, b, c) {
  3339.               playerProgressChangedArg1 = a;
  3340.               playerProgressChangedArg2 = b;
  3341.               playerProgressChangedArg3 = c;
  3342.               const replayBuffer_ = this.replayBuffer_;
  3343.               if (replayBuffer_) {
  3344.                 const replayQueue = replayBuffer_.replayQueue
  3345.                 if (replayQueue && typeof replayQueue === 'object' && !replayQueue.qe3) {
  3346.  
  3347.                   replayBuffer_.replayQueue = new Proxy(replayBuffer_.replayQueue, {
  3348.                     get(target, prop, receiver) {
  3349.                       if (prop === 'qe3') return 1;
  3350.                       const v = target[prop];
  3351.                       if (prop === 'front_') {
  3352.                         if (v && typeof v.length === 'number') {
  3353.                           if (!v.pop78) {
  3354.                             v.pop78 = v.pop;
  3355.                             v.pop = pop078;
  3356.                           }
  3357.                         }
  3358.                       }
  3359.                       return v;
  3360.                     }
  3361.                   });
  3362.  
  3363.                 }
  3364.               }
  3365.               return this.playerProgressChanged32_.apply(this, arguments);
  3366.             };
  3367.  
  3368.           }
  3369.  
  3370.           if (typeof cProto.immediatelyApplyLiveChatActions === 'function' && !cProto.immediatelyApplyLiveChatActions32) {
  3371.  
  3372.             cProto.immediatelyApplyLiveChatActions32 = cProto.immediatelyApplyLiveChatActions;
  3373.  
  3374.             cProto.immediatelyApplyLiveChatActions = function (a) {
  3375.               // if (a.length > 8) {
  3376.               //   console.log(a)
  3377.               // }
  3378.               // console.log(a)
  3379.               /*
  3380.               let arr=a.slice();
  3381.  
  3382.               if(arr.length >= 2){
  3383.                 arr.sort((a, b)=>{
  3384.                   let ak = firstObjectKey(a);
  3385.                   let bk = firstObjectKey(b);
  3386.                   if(!ak||!bk) return 0;
  3387.                   const ax = +a[ak]._timestampUsec57;
  3388.                   const bx = +b[bk]._timestampUsec57;
  3389.                   if(ax >0 && bx >0){
  3390.                     const c =  bx - ax ;
  3391.  
  3392.                     return c > 0.1 ? -1 : c< -0.1 ? 1 : 0;
  3393.                   }
  3394.                   return 0;
  3395.  
  3396.                 });
  3397.                 console.log('sort', JSON.parse(JSON.stringify(arr)));
  3398.               }
  3399.               a=arr;
  3400.               */
  3401.  
  3402.               if (a && typeof a === 'object' && a.length >= 1) {
  3403.                 const d = Date.now();
  3404.                 const m = [];
  3405.                 for (let i = 0, l = a.length; i < l; i++) {
  3406.                   const action = a[i];
  3407.                   const key = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3408.                   if (key === 'addChatItemAction' || key === 'addLiveChatTickerItemAction') {
  3409.                     const itemAction = action[key] || 0;
  3410.                     const item = itemAction.item || 0;
  3411.                     if (item && typeof item === 'object') {
  3412.                       let rendererKey = firstObjectKey(item);
  3413.                       const renderer = item[rendererKey];
  3414.                       let timestampUsec = getTimestampUsec(renderer);
  3415.                       if (timestampUsec !== null) {
  3416.                         renderer._timestampUsec57 = timestampUsec;
  3417.                       }
  3418.                       m.push(renderer);
  3419.                       // if(timestampUsec!==null){
  3420.                       //   if(key==='addLiveChatTickerItemAction')console.log(renderer, rendererKey, key)
  3421.                       //   m.push(renderer);
  3422.  
  3423.                       // }
  3424.                     }
  3425.                   }
  3426.                 }
  3427.                 if (m.length >= 1) {
  3428.  
  3429.                   let lastUsec = null;
  3430.                   for (let i = 0, l = m.length; i < l; i++) {
  3431.                     const renderer = m[i];
  3432.                     if ('_timestampUsec57' in renderer) {
  3433.                       lastUsec = +renderer._timestampUsec57 / 1E3;
  3434.                       renderer.__lcrTime__ = d;
  3435.                       renderer.__actionAt__ = d;
  3436.                     }
  3437.                   }
  3438.  
  3439.  
  3440.                   if (lastUsec !== null) {
  3441.  
  3442.                     const refUsec = lastUsec
  3443.  
  3444.                     let prevUsec = null;
  3445.                     for (let i = 0, l = m.length; i < l; i++) {
  3446.                       const renderer = m[i];
  3447.                       if ('_timestampUsec57' in renderer) {
  3448.  
  3449.                         let actualTime = +renderer._timestampUsec57 / 1E3; // ms
  3450.                         let lcrTime = d - Math.round(refUsec - actualTime); // ms
  3451.  
  3452.                         renderer.__lcrTime__ = lcrTime; // ms
  3453.                         renderer.__actionAt__ = d;
  3454.  
  3455.                         prevUsec = lcrTime
  3456.                       } else {
  3457.  
  3458.                         renderer._prevUsec57 = prevUsec;
  3459.                       }
  3460.                     }
  3461.  
  3462.  
  3463.                     let nextUsec = null;
  3464.                     for (let i = m.length - 1; i >= 0; i--) {
  3465.                       const renderer = m[i];
  3466.                       if ('_timestampUsec57' in renderer) {
  3467.  
  3468.                         nextUsec = renderer.__lcrTime__
  3469.                       } else {
  3470.  
  3471.                         renderer._nextUsec57 = nextUsec;
  3472.  
  3473.                         if (renderer._nextUsec57 > 0 && renderer._prevUsec57 > 0 && renderer._nextUsec57 > renderer._prevUsec57) {
  3474.                           renderer.__lcrTime__ = (renderer._nextUsec57 + renderer._prevUsec57) / 2;
  3475.                           renderer.__actionAt__ = d;
  3476.                         }
  3477.                       }
  3478.                     }
  3479.  
  3480.  
  3481.                   }
  3482.  
  3483.  
  3484.                 }
  3485.               }
  3486.               return this.immediatelyApplyLiveChatActions32.apply(this, arguments)
  3487.             }
  3488.  
  3489.  
  3490.           }
  3491.  
  3492.           console.log("[End]");
  3493.           console.groupEnd();
  3494.  
  3495.  
  3496.         });
  3497.  
  3498.       }
  3499.  
  3500.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3501.  
  3502.         const tag = "yt-live-chat-item-list-renderer"
  3503.         const dummy = document.createElement(tag);
  3504.  
  3505.         const cProto = getProto(dummy);
  3506.         if (!cProto || !cProto.attached) {
  3507.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3508.           return;
  3509.         }
  3510.  
  3511.         mightFirstCheckOnYtInit();
  3512.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3513.         console.log("[Begin]");
  3514.  
  3515.         const mclp = cProto;
  3516.         try {
  3517.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3518.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3519.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3520.           assertor(() => typeof mclp.setAtBottom === 'function');
  3521.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3522.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3523.         } catch (e) { }
  3524.  
  3525.  
  3526.         try {
  3527.           assertor(() => typeof mclp.attached === 'function');
  3528.           assertor(() => typeof mclp.detached === 'function');
  3529.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3530.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3531.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3532.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3533.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3534.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3535.         } catch (e) { }
  3536.  
  3537.         mclp.__intermediate_delay__ = null;
  3538.  
  3539.         let mzk = 0;
  3540.         let myk = 0;
  3541.         let mlf = 0;
  3542.         let myw = 0;
  3543.         let mzt = 0;
  3544.         let zarr = null;
  3545.         let mlg = 0;
  3546.  
  3547.         if ((mclp.clearList || 0).length === 0) {
  3548.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3549.           mclp.clearList66 = mclp.clearList;
  3550.           mclp.clearList = function () {
  3551.             mzk++;
  3552.             myk++;
  3553.             mlf++;
  3554.             myw++;
  3555.             mzt++;
  3556.             mlg++;
  3557.             zarr = null;
  3558.             this.__intermediate_delay__ = null;
  3559.             this.clearList66();
  3560.           };
  3561.           console.log("clearList", "OK");
  3562.         } else {
  3563.           console.log("clearList", "NG");
  3564.         }
  3565.  
  3566.  
  3567.         let onListRendererAttachedDone = false;
  3568.  
  3569.         function setList(itemOffset, items) {
  3570.  
  3571.           const isFirstTime = onListRendererAttachedDone === false;
  3572.  
  3573.           if (isFirstTime) {
  3574.             onListRendererAttachedDone = true;
  3575.             Promise.resolve().then(watchUserCSS);
  3576.             addCssManaged();
  3577.             setupEvents();
  3578.           }
  3579.  
  3580.           setupStyle(itemOffset, items);
  3581.  
  3582.           setupMutObserver(items);
  3583.         }
  3584.  
  3585.         mclp.attached419 = async function () {
  3586.  
  3587.           if (!this.isAttached) return;
  3588.  
  3589.           let maxTrial = 16;
  3590.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3591.             if (--maxTrial < 0 || !this.isAttached) return;
  3592.             await new Promise(requestAnimationFrame);
  3593.           }
  3594.  
  3595.           if (this.isAttached !== true) return;
  3596.  
  3597.           if (!this.$) {
  3598.             console.warn("!this.$");
  3599.             return;
  3600.           }
  3601.           if (!this.$) return;
  3602.           /** @type {HTMLElement | null} */
  3603.           const itemScroller = this.$['item-scroller'];
  3604.           /** @type {HTMLElement | null} */
  3605.           const itemOffset = this.$['item-offset'];
  3606.           /** @type {HTMLElement | null} */
  3607.           const items = this.$['items'];
  3608.  
  3609.           if (!itemScroller || !itemOffset || !items) {
  3610.             console.warn("items.parentNode !== itemOffset");
  3611.             return;
  3612.           }
  3613.  
  3614.           if (nodeParent(items) !== itemOffset) {
  3615.  
  3616.             console.warn("items.parentNode !== itemOffset");
  3617.             return;
  3618.           }
  3619.  
  3620.  
  3621.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3622.  
  3623.             console.warn("id incorrect");
  3624.             return;
  3625.           }
  3626.  
  3627.           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')
  3628.  
  3629.           if (!isTargetItems) {
  3630.             console.warn("!isTargetItems");
  3631.             return;
  3632.           }
  3633.  
  3634.           setList(itemOffset, items);
  3635.  
  3636.         }
  3637.  
  3638.         mclp.attached331 = mclp.attached;
  3639.         mclp.attached = function () {
  3640.           this.attached419 && this.attached419();
  3641.           return this.attached331();
  3642.         }
  3643.  
  3644.         mclp.detached331 = mclp.detached;
  3645.  
  3646.         mclp.detached = function () {
  3647.           setupMutObserver();
  3648.           return this.detached331();
  3649.         }
  3650.  
  3651.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3652.         for (const t29 of t29s) {
  3653.           if ((t29.inst || t29).isAttached === true) {
  3654.             t29.attached419();
  3655.           }
  3656.         }
  3657.  
  3658.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3659.  
  3660.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3661.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3662.  
  3663.           /** @type {Map<number, any>} */
  3664.           const aMap = new Map();
  3665.           let count = 6150;
  3666.           mclp.async66 = mclp.async;
  3667.           mclp.async = function (e, f) {
  3668.             // ensure the previous operation is done
  3669.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3670.             const hasF = arguments.length === 2;
  3671.             const stack = new Error().stack;
  3672.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3673.             if (count > 1e9) count = 6159;
  3674.             const resId = ++count;
  3675.             aMap.set(resId, e);
  3676.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3677.               const rp = aMap.get(resId);
  3678.               if (typeof rp !== 'function') {
  3679.                 return;
  3680.               }
  3681.               let cancelCall = false;
  3682.               if (isFlushAsync) {
  3683.                 if (rk < 0) {
  3684.                   cancelCall = true;
  3685.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3686.                   cancelCall = true;
  3687.                 }
  3688.               }
  3689.               if (cancelCall) {
  3690.                 aMap.delete(resId);
  3691.               } else {
  3692.                 const asyncEn = function () {
  3693.                   aMap.delete(resId);
  3694.                   return rp.apply(this, arguments);
  3695.                 };
  3696.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3697.               }
  3698.             });
  3699.  
  3700.             return resId;
  3701.           }
  3702.  
  3703.           mclp.cancelAsync66 = mclp.cancelAsync;
  3704.           mclp.cancelAsync = function (resId) {
  3705.             if (resId <= 6150) {
  3706.               this.cancelAsync66(resId);
  3707.             } else if (aMap.has(resId)) {
  3708.               const rp = aMap.get(resId);
  3709.               aMap.delete(resId);
  3710.               if (typeof rp !== 'function') {
  3711.                 this.cancelAsync66(rp);
  3712.               }
  3713.             }
  3714.           }
  3715.  
  3716.           console.log("async", "OK");
  3717.         } else {
  3718.           console.log("async", "NG");
  3719.         }
  3720.  
  3721.  
  3722.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3723.  
  3724.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3725.           mclp.showNewItems66_ = mclp.showNewItems_;
  3726.  
  3727.           mclp.showNewItems77_ = async function () {
  3728.             if (myk > 1e9) myk = 9;
  3729.             let tid = ++myk;
  3730.  
  3731.             await new Promise(requestAnimationFrame);
  3732.  
  3733.             if (tid !== myk) {
  3734.               return;
  3735.             }
  3736.  
  3737.             const cnt = this;
  3738.  
  3739.             await Promise.resolve();
  3740.             cnt.showNewItems66_();
  3741.  
  3742.             await Promise.resolve();
  3743.  
  3744.           }
  3745.  
  3746.           mclp.showNewItems_ = function () {
  3747.  
  3748.             const cnt = this;
  3749.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3750.               cnt.showNewItems77_().then(() => {
  3751.                 resolve();
  3752.               });
  3753.             });
  3754.           }
  3755.  
  3756.           console.log("showNewItems_", "OK");
  3757.         } else {
  3758.           console.log("showNewItems_", "NG");
  3759.         }
  3760.  
  3761.  
  3762.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3763.  
  3764.           assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3765.  
  3766.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3767.  
  3768.           let contensWillChangeController = null;
  3769.  
  3770.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3771.  
  3772.           mclp.flushActiveItems78_ = async function (tid) {
  3773.             try {
  3774.               if (tid !== mlf) return;
  3775.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3776.               let logger = false;
  3777.               const cnt = this;
  3778.               let immd = cnt.__intermediate_delay__;
  3779.               await new Promise(requestAnimationFrame);
  3780.  
  3781.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3782.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3783.  
  3784.               mlf++;
  3785.               if (mlg > 1e9) mlg = 9;
  3786.               ++mlg;
  3787.  
  3788.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3789.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3790.               let changeMaxItemsToDisplay = false;
  3791.               const activeItemsLen = this.activeItems_.length;
  3792.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3793.                 logger = true;
  3794.  
  3795.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3796.  
  3797.                 logger && console.log('[Begin]')
  3798.  
  3799.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3800.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3801.                   console.log('reduce maxitems');
  3802.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3803.                     // as all the rendered chats are already "outdated"
  3804.                     // all old chats shall remove and reduced number of few chats will be rendered
  3805.                     // then restore to the original number
  3806.                     changeMaxItemsToDisplay = true;
  3807.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3808.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3809.                   }
  3810.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3811.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3812.  
  3813.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3814.                 } else {
  3815.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3816.  
  3817.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3818.                 }
  3819.               }
  3820.               // it is found that it will render all stacked chats after switching back from background
  3821.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3822.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3823.  
  3824.  
  3825.               const items = (cnt.$ || 0).items;
  3826.  
  3827.               if (USE_WILL_CHANGE_CONTROLLER) {
  3828.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3829.                   contensWillChangeController.release();
  3830.                   contensWillChangeController = null;
  3831.                 }
  3832.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3833.               }
  3834.               const wcController = contensWillChangeController;
  3835.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3836.               wcController && wcController.beforeOper();
  3837.               await Promise.resolve();
  3838.               const acItems = cnt.activeItems_;
  3839.               const len1 = acItems.length;
  3840.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3841.               let waitFor = [];
  3842.  
  3843.  
  3844.               /** @type {Set<string>} */
  3845.               const imageLinks = new Set();
  3846.  
  3847.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3848.                 for (const item of acItems) {
  3849.                   fixLiveChatItem(item, imageLinks);
  3850.                 }
  3851.               }
  3852.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3853.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3854.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3855.  
  3856.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3857.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3858.                 // preload performs the high priority fetching.
  3859.                 // prefetch delays the chat display if the video resoruce is demanding.
  3860.  
  3861.                 if (rel) {
  3862.  
  3863.                   imageLinks.forEach(imageLink => {
  3864.                     let d = false;
  3865.                     const isEmoji = imageLink.includes('/emoji/');
  3866.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3867.                     if (!pretechedSet.has(imageLink)) {
  3868.                       pretechedSet.add(imageLink);
  3869.                       d = true;
  3870.                     }
  3871.                     if (d) {
  3872.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3873.  
  3874.                     }
  3875.                   })
  3876.  
  3877.                 }
  3878.  
  3879.               }
  3880.  
  3881.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3882.               // console.log('ss1', Date.now())
  3883.               if (waitFor.length > 0) {
  3884.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3885.               }
  3886.               waitFor.length = 0;
  3887.               waitFor = null;
  3888.               // console.log('ss2', Date.now())
  3889.               cnt.flushActiveItems66_();
  3890.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3891.               const len2 = cnt.activeItems_.length;
  3892.               const bAsync = len1 !== len2;
  3893.               await Promise.resolve();
  3894.               if (wcController) {
  3895.                 if (bAsync) {
  3896.                   cnt.async(() => {
  3897.                     wcController.afterOper();
  3898.                   });
  3899.                 } else {
  3900.                   wcController.afterOper();
  3901.                 }
  3902.               }
  3903.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3904.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3905.  
  3906.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3907.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3908.               } else if (changeMaxItemsToDisplay) {
  3909.  
  3910.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3911.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  3912.                   reducedMaxItemsToDisplay,
  3913.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  3914.                 });
  3915.               }
  3916.               logger && console.log('[End]')
  3917.  
  3918.               logger && console.groupEnd();
  3919.  
  3920.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3921.  
  3922.  
  3923.                 const ff = () => {
  3924.  
  3925.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3926.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3927.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3928.                     cnt.scrollToBottom_();
  3929.  
  3930.                     Promise.resolve().then(() => {
  3931.  
  3932.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3933.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3934.                     });
  3935.  
  3936.  
  3937.                   }
  3938.                 }
  3939.  
  3940.                 ff();
  3941.  
  3942.  
  3943.                 Promise.resolve().then(ff);
  3944.  
  3945.                 // requestAnimationFrame(ff);
  3946.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  3947.  
  3948.                 const knt = cnt;
  3949.                 if (!scrollChatFn) {
  3950.                   const cnt = knt;
  3951.                   const f = () => {
  3952.                     const itemScroller = cnt.itemScroller;
  3953.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  3954.                     if (!cnt.atBottom) {
  3955.                       cnt.scrollToBottom_();
  3956.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  3957.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  3958.                     }
  3959.                   };
  3960.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  3961.                 }
  3962.  
  3963.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  3964.               }
  3965.  
  3966.               return 1;
  3967.  
  3968.  
  3969.             } catch (e) {
  3970.               console.warn(e);
  3971.             }
  3972.           }
  3973.  
  3974.           mclp.flushActiveItems77_ = function () {
  3975.  
  3976.             return new Promise(resResolve => {
  3977.               try {
  3978.                 const cnt = this;
  3979.                 if (mlf > 1e9) mlf = 9;
  3980.                 let tid = ++mlf;
  3981.                 const hostElement = cnt.hostElement || cnt;
  3982.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  3983.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  3984.  
  3985.                 // 4 times to maxItems to avoid frequent trimming.
  3986.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  3987.  
  3988.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3989.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  3990.                 if (cnt.canScrollToBottom_()) {
  3991.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  3992.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  3993.                     .then((asyncResult) => {
  3994.                       resResolve(asyncResult); // either undefined or 1
  3995.                       resResolve = null;
  3996.                     }).catch((e) => {
  3997.                       console.warn(e);
  3998.                       if (resResolve) resResolve();
  3999.                     });
  4000.                 } else {
  4001.                   resResolve(2);
  4002.                   resResolve = null;
  4003.                 }
  4004.               } catch (e) {
  4005.                 console.warn(e);
  4006.                 if (resResolve) resResolve();
  4007.               }
  4008.  
  4009.  
  4010.             });
  4011.  
  4012.           }
  4013.  
  4014.           mclp.flushActiveItems_ = function () {
  4015.             const cnt = this;
  4016.  
  4017.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  4018.  
  4019.             if (cnt.activeItems_.length === 0) {
  4020.               cnt.__intermediate_delay__ = null;
  4021.               return;
  4022.             }
  4023.  
  4024.             const cntData = ((cnt || 0).data || 0);
  4025.             if (cntData.maxItemsToDisplay944 === undefined) {
  4026.               cntData.maxItemsToDisplay944 = null;
  4027.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  4028.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  4029.             }
  4030.  
  4031.             // ignore previous __intermediate_delay__ and create a new one
  4032.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4033.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  4034.                 if (rt === 1) {
  4035.                   resolve(1); // success, scroll to bottom
  4036.                   if (hasMoreMessageState === 1) {
  4037.                     hasMoreMessageState = 0;
  4038.                     const showMore = (cnt.$ || 0)['show-more'];
  4039.                     if (showMore) {
  4040.                       showMore.classList.remove('has-new-messages-miuzp');
  4041.                     }
  4042.                   }
  4043.                 }
  4044.                 else if (rt === 2) {
  4045.                   resolve(2); // success, trim
  4046.                   if (hasMoreMessageState === 0) {
  4047.                     hasMoreMessageState = 1;
  4048.                     const showMore = cnt.$['show-more'];
  4049.                     if (showMore) {
  4050.                       showMore.classList.add('has-new-messages-miuzp');
  4051.                     }
  4052.                   }
  4053.                 }
  4054.                 else resolve(-1); // skip
  4055.               }).catch(e => {
  4056.                 console.warn(e);
  4057.               });
  4058.             });
  4059.  
  4060.           }
  4061.           console.log("flushActiveItems_", "OK");
  4062.         } else {
  4063.           console.log("flushActiveItems_", "NG");
  4064.         }
  4065.  
  4066.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  4067.           try {
  4068.             if (mlg > 1e9) mlg = 9;
  4069.             const tid = ++mlg;
  4070.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  4071.             const runCond = () => this.canScrollToBottom_();
  4072.             if (!keepTrialCond()) return;
  4073.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  4074.             await new Promise(r => setTimeout(r, 80));
  4075.             if (!keepTrialCond()) return;
  4076.             if (runCond()) return this.flushActiveItems_() | 1;
  4077.             await new Promise(requestAnimationFrame);
  4078.             if (runCond()) return this.flushActiveItems_() | 1;
  4079.           } catch (e) {
  4080.             console.warn(e);
  4081.           }
  4082.         }
  4083.  
  4084.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  4085.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  4086.           assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  4087.  
  4088.           const querySelector = HTMLElement.prototype.querySelector;
  4089.           const U = (element) => ({
  4090.             querySelector: (selector) => querySelector.call(element, selector)
  4091.           });
  4092.  
  4093.           let qid = 0;
  4094.           mclp.atBottomChanged_ = function (a) {
  4095.             let tid = ++qid;
  4096.             let b = this;
  4097.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  4098.               if (tid !== qid) return;
  4099.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  4100.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  4101.               this.hideShowMoreAsync_ = null,
  4102.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  4103.           }
  4104.  
  4105.           console.log("atBottomChanged_", "OK");
  4106.         } else {
  4107.           console.log("atBottomChanged_", "NG");
  4108.         }
  4109.  
  4110.         if ((mclp.onScrollItems_ || 0).length === 1) {
  4111.  
  4112.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  4113.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  4114.           mclp.onScrollItems77_ = async function (evt) {
  4115.             if (myw > 1e9) myw = 9;
  4116.             let tid = ++myw;
  4117.  
  4118.             await new Promise(requestAnimationFrame);
  4119.  
  4120.             if (tid !== myw) {
  4121.               return;
  4122.             }
  4123.  
  4124.             const cnt = this;
  4125.  
  4126.             await Promise.resolve();
  4127.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  4128.               await Promise.resolve().then(() => {
  4129.                 this.ytRendererBehavior.onScroll(evt);
  4130.               }).then(() => {
  4131.                 if (this.canScrollToBottom_()) {
  4132.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  4133.                   if (hasUserJustInteracted) {
  4134.                     // only when there is an user action
  4135.                     this.setAtBottom();
  4136.                     return 1;
  4137.                   }
  4138.                 } else {
  4139.                   // no message inserting
  4140.                   this.setAtBottom();
  4141.                   return 1;
  4142.                 }
  4143.               }).then((r) => {
  4144.  
  4145.                 if (this.activeItems_.length) {
  4146.  
  4147.                   if (this.canScrollToBottom_()) {
  4148.                     this.flushActiveItems_();
  4149.                     return 1 && r;
  4150.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  4151.                     // delayed due to user action
  4152.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  4153.                     return 0;
  4154.                   }
  4155.                 }
  4156.               }).then((r) => {
  4157.                 if (r) {
  4158.                   // ensure setAtBottom is correctly set
  4159.                   this.setAtBottom();
  4160.                 }
  4161.               });
  4162.             } else {
  4163.               cnt.onScrollItems66_(evt);
  4164.             }
  4165.  
  4166.             await Promise.resolve();
  4167.  
  4168.           }
  4169.  
  4170.           mclp.onScrollItems_ = function (evt) {
  4171.  
  4172.             const cnt = this;
  4173.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4174.               cnt.onScrollItems77_(evt).then(() => {
  4175.                 resolve();
  4176.               });
  4177.             });
  4178.           }
  4179.           console.log("onScrollItems_", "OK");
  4180.         } else {
  4181.           console.log("onScrollItems_", "NG");
  4182.         }
  4183.  
  4184.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  4185.  
  4186.           assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  4187.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  4188.  
  4189.           mclp.handleLiveChatActions77_ = async function (arr) {
  4190.             if (typeof (arr || 0).length !== 'number') {
  4191.               this.handleLiveChatActions66_(arr);
  4192.               return;
  4193.             }
  4194.             if (mzt > 1e9) mzt = 9;
  4195.             let tid = ++mzt;
  4196.  
  4197.             if (zarr === null) zarr = arr;
  4198.             else Array.prototype.push.apply(zarr, arr);
  4199.             arr = null;
  4200.  
  4201.             await new Promise(requestAnimationFrame);
  4202.  
  4203.             if (tid !== mzt || zarr === null) {
  4204.               return;
  4205.             }
  4206.  
  4207.             const carr = zarr;
  4208.             zarr = null;
  4209.  
  4210.             await Promise.resolve();
  4211.             this.handleLiveChatActions66_(carr);
  4212.             await Promise.resolve();
  4213.  
  4214.           }
  4215.  
  4216.           mclp.handleLiveChatActions_ = function (arr) {
  4217.  
  4218.             const cnt = this;
  4219.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4220.               cnt.handleLiveChatActions77_(arr).then(() => {
  4221.                 resolve();
  4222.               });
  4223.             });
  4224.           }
  4225.           console.log("handleLiveChatActions_", "OK");
  4226.         } else {
  4227.           console.log("handleLiveChatActions_", "NG");
  4228.         }
  4229.  
  4230.         mclp.hasUserJustInteracted11_ = () => {
  4231.           const t = dateNow();
  4232.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  4233.         }
  4234.  
  4235.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  4236.  
  4237.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  4238.  
  4239.           mclp.canScrollToBottom_ = function () {
  4240.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  4241.           }
  4242.  
  4243.           console.log("canScrollToBottom_", "OK");
  4244.         } else {
  4245.           console.log("canScrollToBottom_", "NG");
  4246.         }
  4247.  
  4248.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  4249.  
  4250.           mclp.isSmoothScrollEnabled_ = function () {
  4251.             return false;
  4252.           }
  4253.  
  4254.           mclp.maybeResizeScrollContainer_ = function () {
  4255.             //
  4256.           }
  4257.  
  4258.           mclp.refreshOffsetContainerHeight_ = function () {
  4259.             //
  4260.           }
  4261.  
  4262.           mclp.smoothScroll_ = function () {
  4263.             //
  4264.           }
  4265.  
  4266.           mclp.resetSmoothScroll_ = function () {
  4267.             //
  4268.           }
  4269.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  4270.         } else {
  4271.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  4272.         }
  4273.  
  4274.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4275.  
  4276.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  4277.           mclp.handleAddChatItemAction_ = function (a) {
  4278.             try {
  4279.               if (a && typeof a === 'object' && !('length' in a)) {
  4280.                 fixLiveChatItem(a.item, null);
  4281.                 console.assert(arguments[0] === a);
  4282.               }
  4283.             } catch (e) { console.warn(e) }
  4284.             return this.handleAddChatItemAction66_.apply(this, arguments);
  4285.           }
  4286.  
  4287.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4288.         } else {
  4289.  
  4290.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4291.         }
  4292.  
  4293.  
  4294.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4295.  
  4296.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  4297.           mclp.handleReplaceChatItemAction_ = function (a) {
  4298.             try {
  4299.               if (a && typeof a === 'object' && !('length' in a)) {
  4300.                 fixLiveChatItem(a.replacementItem, null);
  4301.                 console.assert(arguments[0] === a);
  4302.               }
  4303.             } catch (e) { console.warn(e) }
  4304.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  4305.           }
  4306.  
  4307.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4308.         } else {
  4309.  
  4310.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4311.         }
  4312.  
  4313.         console.log("[End]");
  4314.         console.groupEnd();
  4315.  
  4316.       }).catch(console.warn);
  4317.  
  4318.  
  4319.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  4320.  
  4321.         let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  4322.  
  4323.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  4324.  
  4325.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  4326.           let v = `${attrValue}`;
  4327.           // conside a ticker is 101px width
  4328.           // 1% = 1.01px
  4329.           // 0.2% = 0.202px
  4330.  
  4331.  
  4332.           const ratio1 = (yd.ratio * 100);
  4333.           if (ratio1 > -1) { // avoid NaN
  4334.  
  4335.             // countdownDurationMs
  4336.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  4337.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  4338.             // 150000 - 1%    <1% = 1.5s>
  4339.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  4340.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  4341.  
  4342.             // 99px * 5% = 4.95px
  4343.  
  4344.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  4345.  
  4346.  
  4347.             // 1% Duration
  4348.  
  4349.             let ratio2 = ratio1;
  4350.  
  4351.             const ydd = yd.data;
  4352.             if (ydd) {
  4353.  
  4354.               const d1 = ydd.durationSec;
  4355.               const d2 = ydd.fullDurationSec;
  4356.  
  4357.               // @ step timing [min. 0.2%]
  4358.               let numOfSteps = 500;
  4359.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  4360.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  4361.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  4362.                 else if (d2 > 100) numOfSteps = 100; // 1%
  4363.                 else if (d2 > 50) numOfSteps = 50; // 2%
  4364.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  4365.                 else numOfSteps = 20;
  4366.               }
  4367.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4368.               if (numOfSteps < 5) numOfSteps = 5;
  4369.  
  4370.               const rd = numOfSteps / 100.0;
  4371.  
  4372.               ratio2 = Math.round(ratio2 * rd) / rd;
  4373.  
  4374.               // ratio2 = Math.round(ratio2 * 5) / 5;
  4375.               ratio2 = ratio2.toFixed(1);
  4376.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  4377.  
  4378.               if (yd.__style_last__ === v) return;
  4379.               yd.__style_last__ = v;
  4380.               // do not consider any delay here.
  4381.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  4382.  
  4383.             }
  4384.           }
  4385.  
  4386.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  4387.  
  4388.  
  4389.         } else {
  4390.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  4391.         }
  4392.  
  4393.       };
  4394.  
  4395.  
  4396.       const fpTicker = (renderer) => {
  4397.         const cnt = renderer.inst || renderer;
  4398.         assertor(() => typeof (cnt || 0).is === 'string');
  4399.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  4400.         const container = (cnt.$ || 0).container;
  4401.         if (container) {
  4402.           assertor(() => (container || 0).nodeType === 1);
  4403.           assertor(() => typeof container.setAttribute === 'function');
  4404.           container.setAttribute = tickerContainerSetAttribute;
  4405.         } else {
  4406.           console.warn(`"container" does not exist in ${cnt.is}`);
  4407.         }
  4408.       };
  4409.  
  4410.  
  4411.       const tags = [
  4412.         "yt-live-chat-ticker-paid-message-item-renderer",
  4413.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  4414.         "yt-live-chat-ticker-renderer",
  4415.         "yt-live-chat-ticker-sponsor-item-renderer"
  4416.       ];
  4417.  
  4418.  
  4419.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  4420.  
  4421.         mightFirstCheckOnYtInit();
  4422.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  4423.         console.log("[Begin]");
  4424.  
  4425.         let dummyValueForStyleReturn = null;
  4426.  
  4427.         const genDummyValueForStyleReturn = () => {
  4428.           let s = `--nx:82;`
  4429.           let ro = {
  4430.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4431.             "implementsGoogStringTypedString": true
  4432.           };
  4433.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4434.           return ro;
  4435.         }
  4436.  
  4437.         const isCSSPropertySupported = () => {
  4438.  
  4439.           // @property --ticker-rtime
  4440.  
  4441.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return;
  4442.           const documentElement = document.documentElement;
  4443.           if (!documentElement) {
  4444.             console.warn('document.documentElement is not found');
  4445.             return false;
  4446.           }
  4447.           if (`${getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  4448.             return false;
  4449.           }
  4450.           return true;
  4451.  
  4452.         };
  4453.  
  4454.  
  4455.         let windowShownAt = -1;
  4456.         const setupEventForWindowShownAt = () => {
  4457.           window.addEventListener('visibilitychange', () => {
  4458.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  4459.             else windowShownAt = 0;
  4460.           }, false);
  4461.         }
  4462.  
  4463.         const dProto = {
  4464.  
  4465.           attachedForTickerInit: function () {
  4466.  
  4467.             fpTicker(this.hostElement || this);
  4468.             return this.attached77();
  4469.  
  4470.           },
  4471.  
  4472.  
  4473.           // doAnimator
  4474.  
  4475.           _makeAnimator: function () {
  4476.             if (this._r782) return;
  4477.             // if (!this.isAttached) return;
  4478.             if (!this._runnerAE) {
  4479.               /** @type {HTMLElement | null} */
  4480.               const aElement = (this.$ || 0).container;
  4481.               if (!aElement) return console.warn("this.$.container is undefined");
  4482.               const da = this.data;
  4483.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  4484.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  4485.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  4486.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  4487.  
  4488.               // if (!this.__tickerBackgroundInitialChecked__) {
  4489.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  4490.               //   console.log('__tickerBackgroundInitialChecked__')
  4491.               //   this._checkTickerBackgroundChanged();
  4492.               // }
  4493.  
  4494.               aElement.style.setProperty('--ticker-c1', c1);
  4495.               aElement.style.setProperty('--ticker-c2', c2);
  4496.               aElement.classList.add(runTickerClassName);
  4497.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4498.               // this._aeStartV = this.countdownMs;
  4499.               // this._aeStartT = this.countdownDurationMs;
  4500.               if (!(p >= 0 && p <= 100)) {
  4501.                 console.warn('incorrect time ratio', p);
  4502.               } else {
  4503.                 /*
  4504.                 const u0 = p.toFixed(4) + '%';
  4505.                 this._runnerAE = animate.call(aElement,
  4506.                   [
  4507.                     { '--ticker-rtime': u0 },
  4508.                     { '--ticker-rtime': '0%' }
  4509.                   ]
  4510.                   ,
  4511.                   {
  4512.                     fill: "forwards",
  4513.                     duration: this.countdownMs,
  4514.                     easing: "linear"
  4515.                   }
  4516.                 );
  4517.                 */
  4518.  
  4519.                 let timingFn = 'linear';
  4520.  
  4521.                 const totalDuration = this.countdownDurationMs;
  4522.  
  4523.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4524.  
  4525.                   // @ step timing [min. 0.2%]
  4526.                   let stepInterval = 0.2; // unit: %
  4527.                   if (totalDuration > 400000) stepInterval = 0.2;
  4528.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4529.                   else if (totalDuration > 100000) stepInterval = 1;
  4530.                   else if (totalDuration > 50000) stepInterval = 2;
  4531.                   else if (totalDuration > 25000) stepInterval = 5;
  4532.                   else stepInterval = 5;
  4533.  
  4534.                   let numOfSteps = Math.round(100 / stepInterval);
  4535.  
  4536.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4537.                   if (numOfSteps < 5) numOfSteps = 5;
  4538.  
  4539.                   timingFn = `steps(${numOfSteps}, end)`;
  4540.  
  4541.                 }
  4542.  
  4543.  
  4544.                 /** @type {Animation} */
  4545.                 const ae = animate.call(aElement,
  4546.                   [
  4547.                     { '--ticker-rtime': '100%' },
  4548.                     { '--ticker-rtime': '0%' }
  4549.                   ]
  4550.                   ,
  4551.                   {
  4552.                     fill: "forwards",
  4553.                     duration: totalDuration,
  4554.                     easing: timingFn
  4555.                   }
  4556.                 );
  4557.  
  4558.                 this._runnerAE = ae;
  4559.  
  4560.                 ae.onfinish = (event) => {
  4561.                   this.onfinish = null;
  4562.                   if (this._runnerAE !== ae) return;
  4563.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4564.                     this._aeFinished(event);
  4565.                   }
  4566.                 }
  4567.  
  4568.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4569.  
  4570.                 if (bq >= 0 && bq <= totalDuration) {
  4571.  
  4572.                   if (bq > totalDuration - 1) {
  4573.                     ae.currentTime = bq;
  4574.                     // setTimeout(() => {
  4575.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4576.                     // }, 1);
  4577.                   } else {
  4578.                     ae.currentTime = bq;
  4579.                   }
  4580.                 } else {
  4581.                   console.warn('Error on setting _runnerAE.currentTime!');
  4582.                 }
  4583.  
  4584.  
  4585.                 aeConstructor = ae.constructor; // constructor is from iframe
  4586.                 return ae;
  4587.               }
  4588.             } else {
  4589.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4590.               // assume just time update
  4591.               const ae = this._runnerAE;
  4592.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4593.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4594.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4595.               if (!(p >= 0 && p <= 100)) {
  4596.                 console.warn('incorrect time ratio', p);
  4597.               } else {
  4598.                 // let u0 = p.toFixed(4) + '%'
  4599.                 /*
  4600.                 ae.effect.setKeyframes([
  4601.                   { '--ticker-rtime': u0 },
  4602.                   { '--ticker-rtime': '0%' }
  4603.                 ]);
  4604.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4605.                 */
  4606.                 // ae.currentTime = 0;
  4607.  
  4608.  
  4609.  
  4610.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4611.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4612.  
  4613.                   this._runnerAE.currentTime = bq
  4614.                 } else {
  4615.                   console.warn('Error on setting _runnerAE.currentTime!');
  4616.                 }
  4617.  
  4618.  
  4619.                 ae.play();
  4620.                 return ae;
  4621.               }
  4622.             }
  4623.           },
  4624.  
  4625.           _aeFinished: function (event) {
  4626.  
  4627.             if (this._r782) return;
  4628.  
  4629.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4630.               this._throwOut();
  4631.               return;
  4632.             }
  4633.  
  4634.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4635.  
  4636.             let lc = window.performance.now();
  4637.             this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4638.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4639.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4640.             if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4641.  
  4642.             this.countdownMs = 0;
  4643.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  4644.  
  4645.             if (this.isAttached) {
  4646.               let fastRemoved = false;
  4647.               if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4648.                 // no animation if the video page is switched from background to foreground
  4649.                 // this.hostElement.style.display = 'none';
  4650.                 const id = (this.data || 0).id || 0;
  4651.                 if (!id) this.data = { id: 1 }
  4652.                 try {
  4653.                   this.requestRemoval();
  4654.                   fastRemoved = true;
  4655.                 } catch (e) {
  4656.  
  4657.                 }
  4658.               }
  4659.  
  4660.               if (!fastRemoved) {
  4661.                 "auto" === this.hostElement.style.width && this.setContainerWidth();
  4662.                 this.slideDown();
  4663.               }
  4664.             }
  4665.  
  4666.  
  4667.  
  4668.           },
  4669.  
  4670.  
  4671.           /** @type {()} */
  4672.           _throwOut: function () {
  4673.             this._r782 = 1;
  4674.             Promise.resolve().then(() => {
  4675.               if (typeof this.requestRemoval === 'function') {
  4676.                 const id = (this.data || 0).id;
  4677.                 if (!id) this.data = { id: 1 };
  4678.                 try {
  4679.                   this.requestRemoval();
  4680.                 } catch (e) { }
  4681.               }
  4682.               this.detached();
  4683.               this.data = null;
  4684.               this.countdownMs = 0;
  4685.               this.lastCountdownTimeMs = null;
  4686.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  4687.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  4688.               if (this.__dataReady === true) this.__dataReady = false;
  4689.               const hm = this.hostElement || this;
  4690.               if (hm.parentNode) hm.remove();
  4691.               if (hm.firstChild) hm.textContent = '';
  4692.             }).catch(e => {
  4693.               console.warn(e);
  4694.             });
  4695.           },
  4696.  
  4697.  
  4698.           // doTimerFnModification
  4699.  
  4700.  
  4701.           /** @type {(a, b)} */
  4702.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4703.             try {
  4704.               // a.durationSec [s] => countdownMs [ms]
  4705.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4706.               // lastCountdownTimeMs => raf ongoing
  4707.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4708.  
  4709.               if (this._r782) return;
  4710.  
  4711.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4712.                 this._throwOut();
  4713.                 return;
  4714.               }
  4715.  
  4716.               // TimerFnModA
  4717.  
  4718.               b = void 0 === b ? 0 : b;
  4719.               if (void 0 !== a) {
  4720.  
  4721.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4722.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4723.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4724.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  4725.                   this.rafId = 1
  4726.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4727.                   this.detlaSincePausedSecs = 0;
  4728.                   const ae = this._makeAnimator();
  4729.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4730.  
  4731.                   // if (playerProgressChangedArg1 === null) {
  4732.                   //   console.log('startCountdownForTimerFnModA', this.data)
  4733.                   // }
  4734.  
  4735.                   if (isPlayProgressTriggered && this.isAnimationPaused !== true && this.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__) {
  4736.  
  4737.  
  4738.  
  4739.  
  4740.                     this.playerProgressSec = lastPlayerProgress > 0 ? lastPlayerProgress : 0; // save the progress first
  4741.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4742.                     this.detlaSincePausedSecs = 0;
  4743.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4744.  
  4745.                     relayPromise = relayPromise || new PromiseExternal();
  4746.  
  4747.                     relayPromise.then(() => {
  4748.                       if (this.isAttached === true && this.countdownDurationMs > 0 && this.isAnimationPaused === true && this.isReplayPaused !== true) {
  4749.                         this.isAnimationPaused = false;
  4750.                       }
  4751.                     });
  4752.  
  4753.  
  4754.                   }
  4755.  
  4756.  
  4757.  
  4758.                 }
  4759.               }
  4760.  
  4761.             } catch (e) {
  4762.               console.warn(e);
  4763.             }
  4764.  
  4765.           },
  4766.  
  4767.  
  4768.  
  4769.           /** @type {(a, b)} */
  4770.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4771.             try {
  4772.               // a.durationSec [s] => countdownMs [ms]
  4773.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4774.               // lastCountdownTimeMs => raf ongoing
  4775.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4776.  
  4777.               if (this._r782) return;
  4778.  
  4779.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4780.                 this._throwOut();
  4781.                 return;
  4782.               }
  4783.  
  4784.               // TimerFnModT
  4785.  
  4786.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4787.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4788.               b = void 0 === b ? 0 : b;
  4789.               void 0 !== a && (this.countdownMs = 1E3 * a,
  4790.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4791.                 this.ratio = 1,
  4792.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  4793.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4794.  
  4795.             } catch (e) {
  4796.               console.warn(e);
  4797.             }
  4798.  
  4799.           },
  4800.  
  4801.  
  4802.           /** @type {(a,)} */
  4803.           updateTimeoutForTimerFnModA: function (a) {
  4804.  
  4805.             try {
  4806.  
  4807.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4808.  
  4809.               if (this._r782) return;
  4810.  
  4811.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4812.                 this._throwOut();
  4813.                 return;
  4814.               }
  4815.  
  4816.               // TimerFnModA
  4817.  
  4818.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4819.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4820.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4821.               }
  4822.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4823.               if (this.isAttached && this.countdownMs) {
  4824.                 this.lastCountdownTimeMs = a
  4825.                 const ae = this._makeAnimator(); // request raf
  4826.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4827.               } else {
  4828.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4829.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4830.                     this.slideDown()));
  4831.               }
  4832.  
  4833.             } catch (e) {
  4834.               console.warn(e);
  4835.             }
  4836.  
  4837.  
  4838.           },
  4839.  
  4840.           /** @type {(a,)} */
  4841.           updateTimeoutForTimerFnModT: function (a) {
  4842.  
  4843.             try {
  4844.  
  4845.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4846.  
  4847.               if (this._r782) return;
  4848.  
  4849.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4850.                 this._throwOut();
  4851.                 return;
  4852.               }
  4853.  
  4854.               // TimerFnModT
  4855.  
  4856.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4857.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4858.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4859.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4860.               }
  4861.               // console.log(703, this.countdownMs)
  4862.               this.ratio = this.countdownMs / this.countdownDurationMs;
  4863.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4864.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4865.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4866.                     this.slideDown()))
  4867.  
  4868.  
  4869.             } catch (e) {
  4870.               console.warn(e);
  4871.             }
  4872.           },
  4873.  
  4874.           /** @type {(a,b)} */
  4875.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  4876.  
  4877.             if (this._r782) return;
  4878.  
  4879.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4880.               this._throwOut();
  4881.               return;
  4882.             }
  4883.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4884.             this._forceNoDetlaSincePausedSecs783 = 0;
  4885.  
  4886.             Promise.resolve().then(() => {
  4887.  
  4888.               if (a) {
  4889.  
  4890.                 if (this._runnerAE && this._runnerAE.playState === 'running') {
  4891.  
  4892.                   this._runnerAE.pause()
  4893.                   let lc = window.performance.now();
  4894.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4895.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4896.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4897.                 }
  4898.  
  4899.               } else if (!a && b) {
  4900.  
  4901.  
  4902.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4903.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4904.                 this.detlaSincePausedSecs = 0;
  4905.                 this.updateTimeout(a);
  4906.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  4907.  
  4908.               }
  4909.  
  4910.  
  4911.             }).catch(e => {
  4912.               console.log(e);
  4913.             });
  4914.  
  4915.  
  4916.  
  4917.           },
  4918.  
  4919.  
  4920.           /** @type {(a,b)} */
  4921.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  4922.  
  4923.             if (this._r782) return;
  4924.  
  4925.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4926.               this._throwOut();
  4927.               return;
  4928.             }
  4929.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4930.             this._forceNoDetlaSincePausedSecs783 = 0;
  4931.  
  4932.             Promise.resolve().then(() => {
  4933.  
  4934.               // TimerFnModT
  4935.  
  4936.               // ez++;
  4937.               // if(ez> 1e9) ez=9;
  4938.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4939.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4940.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4941.                   this.detlaSincePausedSecs = 0),
  4942.                 this.boundUpdateTimeout37_(a),
  4943.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  4944.  
  4945.  
  4946.             }).catch(e => {
  4947.               console.log(e);
  4948.             });
  4949.  
  4950.  
  4951.  
  4952.           },
  4953.  
  4954.  
  4955.           /** @type {(a,b)} */
  4956.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  4957.  
  4958.             if (this._r782) return;
  4959.  
  4960.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4961.               this._throwOut();
  4962.               return;
  4963.             }
  4964.  
  4965.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  4966.  
  4967.           },
  4968.  
  4969.  
  4970.  
  4971.           /** @type {()} */
  4972.           handlePauseReplayForPlaybackProgressState: function () {
  4973.             if (!playerEventsByIframeRelay) return this.handlePauseReplay66.apply(this, arguments);
  4974.  
  4975.             if (onPlayStateChangePromise) {
  4976.  
  4977.               if (this.rtu > 1e9) this.rtu = this.rtu % 1e4;
  4978.               const tid = ++this.rtu;
  4979.  
  4980.               onPlayStateChangePromise.then(() => {
  4981.                 if (tid === this.rtu && !onPlayStateChangePromise) this.handlePauseReplay.apply(this, arguments);
  4982.               });
  4983.  
  4984.               return;
  4985.             }
  4986.  
  4987.             if (playerState !== 2) return;
  4988.             if (this.isAttached) {
  4989.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  4990.               const tid = ++this.rtk;
  4991.               const tc = relayCount;
  4992.               foregroundPromiseFn().then(() => {
  4993.                 if (tid === this.rtk && tc === relayCount && playerState === 2 && _playerState === playerState) {
  4994.                   this.handlePauseReplay66();
  4995.                 }
  4996.  
  4997.               })
  4998.             }
  4999.           },
  5000.  
  5001.           /** @type {()} */
  5002.           handleResumeReplayForPlaybackProgressState: function () {
  5003.             if (!playerEventsByIframeRelay) return this.handleResumeReplay66.apply(this, arguments);
  5004.  
  5005.  
  5006.             if (onPlayStateChangePromise) {
  5007.  
  5008.               if (this.rtv > 1e9) this.rtv = this.rtv % 1e4;
  5009.               const tid = ++this.rtv;
  5010.  
  5011.               onPlayStateChangePromise.then(() => {
  5012.                 if (tid === this.rtv && !onPlayStateChangePromise) this.handleResumeReplay.apply(this, arguments);
  5013.               });
  5014.  
  5015.               return;
  5016.             }
  5017.  
  5018.  
  5019.             if (playerState !== 1) return;
  5020.             if (this.isAttached) {
  5021.               const tc = relayCount;
  5022.  
  5023.               relayPromise = relayPromise || new PromiseExternal();
  5024.               relayPromise.then(() => {
  5025.                 if (relayCount > tc && playerState === 1 && _playerState === playerState) {
  5026.                   this.handleResumeReplay66();
  5027.                 }
  5028.               });
  5029.             }
  5030.           },
  5031.  
  5032.           /** @type {(a,)} */
  5033.           handleReplayProgressForPlaybackProgressState: function (a) {
  5034.             if (this.isAttached) {
  5035.               const tid = ++this.rtk;
  5036.               foregroundPromiseFn().then(() => {
  5037.                 if (tid === this.rtk) {
  5038.                   this.handleReplayProgress66(a);
  5039.                 }
  5040.               })
  5041.             }
  5042.           }
  5043.  
  5044.  
  5045.         }
  5046.  
  5047.  
  5048.         for (const tag of tags) { // ##tag##
  5049.           const dummy = document.createElement(tag);
  5050.  
  5051.           const cProto = getProto(dummy);
  5052.           if (!cProto || !cProto.attached) {
  5053.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5054.             continue;
  5055.           }
  5056.  
  5057.           cProto.attached77 = cProto.attached;
  5058.  
  5059.           cProto.attached = dProto.attachedForTickerInit;
  5060.  
  5061.           let rafHackState = 0;
  5062.  
  5063.           let isTimingFunctionHackable = false;
  5064.  
  5065.           let urt = 0;
  5066.  
  5067.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  5068.  
  5069.             // console.log('startCountdown', typeof cProto.startCountdown)
  5070.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  5071.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  5072.  
  5073.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  5074.  
  5075.           } else {
  5076.             console.log(`Skip Timing Function Modification for ${tag}`);
  5077.             continue;
  5078.           }
  5079.  
  5080.  
  5081.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  5082.  
  5083.             // cancelable - this.rafId < isAnimationPausedChanged >
  5084.             rafHackState = 1;
  5085.  
  5086.             if (isTimingFunctionHackable) {
  5087.               rafHackState = 2;
  5088.  
  5089.             } else {
  5090.               rafHackState = 4;
  5091.             }
  5092.  
  5093.           }
  5094.  
  5095.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  5096.  
  5097.           const doRAFHack = rafHackState === 2;
  5098.  
  5099.           cProto._throwOut = dProto._throwOut;
  5100.  
  5101.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  5102.  
  5103.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  5104.  
  5105.  
  5106.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  5107.  
  5108.  
  5109.  
  5110.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  5111.               urt++;
  5112.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  5113.             } else {
  5114.               console.log('Error for setting cProto.handlePauseReplay', tag)
  5115.             }
  5116.  
  5117.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  5118.               urt++;
  5119.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  5120.             } else {
  5121.               console.log('Error for setting cProto.handleResumeReplay', tag)
  5122.             }
  5123.  
  5124.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  5125.               urt++;
  5126.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  5127.             } else {
  5128.               console.log('Error for setting cProto.handleReplayProgress', tag)
  5129.             }
  5130.  
  5131.  
  5132.  
  5133.           }
  5134.  
  5135.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  5136.           cProto.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__ = ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED;
  5137.  
  5138.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  5139.  
  5140.             cProto.rtk = 0;
  5141.             cProto.rtu = 0;
  5142.             cProto.rtv = 0;
  5143.  
  5144.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  5145.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  5146.  
  5147.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  5148.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  5149.  
  5150.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  5151.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  5152.  
  5153.           }
  5154.  
  5155.           const doTimerFnModification = (doRAFHack || doAnimator);
  5156.  
  5157.           if (doAnimator && windowShownAt < 0) {
  5158.             windowShownAt = 0;
  5159.             setupEventForWindowShownAt();
  5160.           }
  5161.  
  5162.           if (doTimerFnModification) {
  5163.  
  5164.             cProto.startCountdown = (
  5165.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  5166.             );
  5167.  
  5168.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5169.             cProto.updateTimeout = (
  5170.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  5171.             );
  5172.  
  5173.  
  5174.             // let ez = 0;
  5175.             cProto.isAnimationPausedChanged = (
  5176.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  5177.             );
  5178.  
  5179.           }
  5180.  
  5181.           if (doAnimator) {
  5182.  
  5183.             assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  5184.  
  5185.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  5186.  
  5187.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  5188.  
  5189.           }
  5190.  
  5191.           if (doTimerFnModification === true) hasTimerModified = true;
  5192.  
  5193.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  5194.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  5195.           }
  5196.  
  5197.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  5198.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  5199.           }
  5200.  
  5201.         }
  5202.  
  5203.         const selector = tags.join(', ');
  5204.         const elements = document.querySelectorAll(selector);
  5205.         if (elements.length >= 1) {
  5206.           for (const elm of elements) {
  5207.             if ((elm || elm.inst).isAttached === true) {
  5208.               fpTicker(elm);
  5209.             }
  5210.           }
  5211.         }
  5212.  
  5213.         console.log("[End]");
  5214.         console.groupEnd();
  5215.  
  5216.  
  5217.       }).catch(console.warn);
  5218.  
  5219.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  5220.  
  5221.         mightFirstCheckOnYtInit();
  5222.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  5223.         console.log("[Begin]");
  5224.         (() => {
  5225.  
  5226.           /* pending!!
  5227.  
  5228.           handleLiveChatAction
  5229.  
  5230.           removeTickerItemById
  5231.  
  5232.           _itemsChanged
  5233.           itemsChanged
  5234.  
  5235.           handleMarkChatItemAsDeletedAction
  5236.           handleMarkChatItemsByAuthorAsDeletedAction
  5237.           handleRemoveChatItemByAuthorAction
  5238.  
  5239.  
  5240.           */
  5241.  
  5242.           const tag = "yt-live-chat-ticker-renderer"
  5243.           const dummy = document.createElement(tag);
  5244.  
  5245.           const cProto = getProto(dummy);
  5246.           if (!cProto || !cProto.attached) {
  5247.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5248.             return;
  5249.           }
  5250.  
  5251.           if (AMEND_TICKER_handleLiveChatAction
  5252.             && typeof cProto.handleLiveChatAction === 'function' && !cProto.handleLiveChatAction45 && fnIntegrity(cProto.handleLiveChatAction) === '1.63.48'
  5253.             && typeof cProto.handleLiveChatActions === 'function' && !cProto.handleLiveChatActions45 && fnIntegrity(cProto.handleLiveChatActions) === '1.23.12'
  5254.             && typeof cProto.unshift === 'function' && cProto.unshift.length === 1
  5255.             && typeof cProto.handleMarkChatItemAsDeletedAction === 'function' && cProto.handleMarkChatItemAsDeletedAction.length === 1
  5256.             && typeof cProto.removeTickerItemById === 'function' && cProto.removeTickerItemById.length === 1
  5257.             && typeof cProto.handleMarkChatItemsByAuthorAsDeletedAction === 'function' && cProto.handleMarkChatItemsByAuthorAsDeletedAction.length === 1
  5258.             && typeof cProto.handleRemoveChatItemByAuthorAction === 'function' && cProto.handleRemoveChatItemByAuthorAction.length === 1
  5259.           ) {
  5260.  
  5261.             cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  5262.  
  5263.             cProto.handleLiveChatActions = function (a) {
  5264.               /**
  5265.                *
  5266.                   f.handleLiveChatActions = function(a) {
  5267.                       a.length && (a.forEach(this.handleLiveChatAction, this),
  5268.                       this.updateHighlightedItem(),
  5269.                       this.shouldAnimateIn = !0)
  5270.                   }
  5271.                *
  5272.                */
  5273.  
  5274.               if (a.length) {
  5275.                 const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  5276.                 const len = a.length;
  5277.                 if (FIX_BATCH_TICKER_ORDER && len >= 2) {
  5278.                   // Primarily for the initial batch, this is due to replayBuffer._back.
  5279.                   const entries = [];
  5280.                   const entriesI = [];
  5281.                   for (let i = 0; i < len; i++) {
  5282.                     const item = ((a[i] || 0).addLiveChatTickerItemAction || 0).item || 0;
  5283.                     if (item) {
  5284.                       const itemRendererKey = firstObjectKey(item);
  5285.                       const itemRenderer = item[itemRendererKey];
  5286.                       if (itemRenderer) {
  5287.                         const timestampUsec = getTimestampUsec(itemRenderer);
  5288.                         if (timestampUsec !== null) {
  5289.                           timestampUsec = parseInt(timestampUsec);
  5290.                           if (timestampUsec > 0) {
  5291.                             entriesI.push(i);
  5292.                             entries.push({ e: a[i], timestampUsec })
  5293.                           }
  5294.                         }
  5295.                       }
  5296.                     }
  5297.                   }
  5298.                   if (entries.length >= 2) {
  5299.                     entries.sort((a, b) => {
  5300.                       const diff = a.timestampUsec - b.timestampUsec
  5301.                       return diff > 0.1 ? 1 : diff < -0.1 ? -1 : 0;
  5302.                     });
  5303.                     for (let j = 0; j < entriesI.length; j++) {
  5304.                       const i = entriesI[j];
  5305.                       a[i] = entries[j].e;
  5306.                     }
  5307.                   }
  5308.                   entries.length = 0;
  5309.                   entriesI.length = 0;
  5310.                 }
  5311.                 for (const action of a) {
  5312.                   action.__batchId45__ = batchToken;
  5313.                   this.handleLiveChatAction(action);
  5314.                 }
  5315.               }
  5316.             }
  5317.  
  5318.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  5319.  
  5320.  
  5321.  
  5322.             cProto._nszlv_ = 0;
  5323.             cProto._stackedLCAs_ = null;
  5324.             cProto._lastAddItem_ = null;
  5325.             cProto._lastAddItemInStack_ = false;
  5326.             cProto.handleLiveChatAction = function (a) {
  5327.  
  5328.               /**
  5329.                *
  5330.                *
  5331.                 f.handleLiveChatAction = function(a) {
  5332.                     var b = C(a, xO)
  5333.                       , c = C(a, yO)
  5334.                       , d = C(a, o1a)
  5335.                       , e = C(a, p1a);
  5336.                     a = C(a, A1a);
  5337.                     b ? this.unshift("items", b.item) : c ? this.handleMarkChatItemAsDeletedAction(c) : d ? this.removeTickerItemById(d.targetItemId) : e ? this.handleMarkChatItemsByAuthorAsDeletedAction(e) : a && this.handleRemoveChatItemByAuthorAction(a)
  5338.                 }
  5339.                *
  5340.                */
  5341.  
  5342.               // return this.handleLiveChatAction45(a)
  5343.               const { addChatItemAction, addLiveChatTickerItemAction, markChatItemAsDeletedAction,
  5344.                 removeChatItemAction, markChatItemsByAuthorAsDeletedAction, removeChatItemByAuthorAction, __batchId45__ } = a
  5345.  
  5346.               if (addChatItemAction) return;
  5347.  
  5348.               // console.log(Object.keys(a));
  5349.  
  5350.               if (this._stackedLCAs_ === null) this._stackedLCAs_ = [];
  5351.               const stackArr = this._stackedLCAs_;
  5352.               let newStackEntry = null;
  5353.               if (addLiveChatTickerItemAction) {
  5354.                 let isDuplicated = false;
  5355.  
  5356.                 const newItem = addLiveChatTickerItemAction.item;
  5357.                 const tickerType = firstObjectKey(newItem);
  5358.                 if (!tickerType) return;
  5359.                 const tickerItem = newItem[tickerType];
  5360.                 const tickerId = tickerItem.id;
  5361.                 if (!tickerId) return;
  5362.  
  5363.                 if (this._lastAddItem_ && this._lastAddItem_.id === tickerId) {
  5364.                   let prevTickerItem = null;
  5365.                   if (this._lastAddItemInStack_) {
  5366.                     const entry = stackArr[stackArr.length - 1]; // only consider the last entry
  5367.                     if (entry && entry.action === 'addItem') {
  5368.                       prevTickerItem = entry.data; // only consider the first item;
  5369.                     }
  5370.                   } else {
  5371.                     prevTickerItem = this.items[0]; // only consider the first item;
  5372.                   }
  5373.                   if (prevTickerItem && prevTickerItem[tickerType]) {
  5374.                     if (prevTickerItem[tickerType].id === tickerId) {
  5375.                       isDuplicated = true;
  5376.                     }
  5377.                   }
  5378.                 }
  5379.                 if (!isDuplicated) {
  5380.                   this._lastAddItem_ = tickerItem;
  5381.                   this._lastAddItemInStack_ = true;
  5382.                   // console.log('newItem', newItem)
  5383.  
  5384.                   newStackEntry = { action: 'addItem', data: newItem };
  5385.  
  5386.                 } else {
  5387.                   console.log('handleLiveChatAction Repeated Item', tickerItem.id, tickerItem); // happen in both live and playback. Reason Unknown.
  5388.                   return;
  5389.                 }
  5390.  
  5391.               } else {
  5392.                 markChatItemAsDeletedAction && (newStackEntry = { action: 'mcItemD', data: markChatItemAsDeletedAction });
  5393.                 removeChatItemAction && (newStackEntry = { action: 'removeItemById', data: removeChatItemAction.targetId });
  5394.                 markChatItemsByAuthorAsDeletedAction && (newStackEntry = { action: 'mcItemAD', data: markChatItemsByAuthorAsDeletedAction });
  5395.                 removeChatItemByAuthorAction && (newStackEntry = { action: 'removeItemA', data: removeChatItemByAuthorAction })
  5396.               }
  5397.  
  5398.  
  5399.               if (!newStackEntry) return;
  5400.               stackArr.push(newStackEntry);
  5401.  
  5402.  
  5403.               this._nszlv_++;
  5404.               if (this._nszlv_ > 1e9) this._nszlv_ = 9;
  5405.               const tid = this._nszlv_;
  5406.  
  5407.               newStackEntry.__batchId45__ = __batchId45__ || '';
  5408.               newStackEntry.dateTime = Date.now();
  5409.  
  5410.               foregroundPromiseFn().then(() => {
  5411.                 if (tid !== this._nszlv_) return;
  5412.                 const dateNow = Date.now(); // time difference to shift animation start time shall be considered. (pending)
  5413.                 const stackArr = this._stackedLCAs_.slice(0);
  5414.                 this._stackedLCAs_.length = 0;
  5415.                 this._lastAddItemInStack_ = false;
  5416.                 let lastDateTime = 0;
  5417.                 let prevBatchId = '';
  5418.                 const addItems = [];
  5419.                 const previousShouldAnimateIn = this.shouldAnimateIn;
  5420.                 for (const entry of stackArr) {
  5421.                   const { action, data, dateTime, __batchId45__ } = entry;
  5422.  
  5423.                   const finishLastAction = (
  5424.                     (prevBatchId !== __batchId45__ && prevBatchId)
  5425.                     || (dateNow - lastDateTime >= 1000 && dateNow - dateTime < 1000)
  5426.                   );
  5427.  
  5428.                   const addPrevItems = addItems.length >= 1 && (finishLastAction || action !== 'addItem');
  5429.                   lastDateTime = dateTime;
  5430.                   prevBatchId = __batchId45__;
  5431.  
  5432.                   if (dateNow - dateTime >= 1000 && this.shouldAnimateIn) this.shouldAnimateIn = false;
  5433.  
  5434.                   if (addPrevItems) {
  5435.                     let e = addItems.slice(0);
  5436.                     addItems.length = 0;
  5437.                     this.unshift("items", ...e);
  5438.                   }
  5439.                   if (finishLastAction) {
  5440.                     this.updateHighlightedItem();
  5441.                     if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5442.                   }
  5443.  
  5444.                   if (action === 'addItem') addItems.unshift(data);
  5445.                   else if (action === 'mcItemD') this.handleMarkChatItemAsDeletedAction(data);
  5446.                   else if (action === 'removeItemById') this.removeTickerItemById(data);
  5447.                   else if (action === 'mcItemAD') this.handleMarkChatItemsByAuthorAsDeletedAction(data);
  5448.                   else if (action === 'removeItemA') this.handleRemoveChatItemByAuthorAction(data);
  5449.  
  5450.                 }
  5451.                 if (previousShouldAnimateIn && !this.shouldAnimateIn) this.shouldAnimateIn = true;
  5452.                 if (addItems.length >= 1) {
  5453.                   const e = addItems.slice(0);
  5454.                   addItems.length = 0;
  5455.                   if (ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME) {
  5456.  
  5457.                     const arr = [];
  5458.                     const d = Date.now();
  5459.                     for (const item of e) {
  5460.                       const key = firstObjectKey(item);
  5461.                       if (key) {
  5462.  
  5463.  
  5464.                         const itemRenderer = item[key] || 0;
  5465.                         const { durationSec, fullDurationSec, __actionAt__ } = itemRenderer;
  5466.                         if (__actionAt__ > 0 && durationSec > 0 && fullDurationSec > 0) {
  5467.  
  5468.  
  5469.                           const offset = d - __actionAt__;
  5470.                           if (offset > 0 && typeof durationSec === 'number' && typeof fullDurationSec === 'number' && fullDurationSec >= durationSec) {
  5471.                             const adjustedDurationSec = durationSec - Math.floor(offset / 1000);
  5472.                             if (adjustedDurationSec < durationSec) { // prevent NaN
  5473.                               // console.log('adjustedDurationSec', adjustedDurationSec);
  5474.                               if (adjustedDurationSec > 0) {
  5475.                                 // console.log('offset Sec', Math.floor(offset / 1000));
  5476.                                 itemRenderer.durationSec = adjustedDurationSec;
  5477.                               } else {
  5478.                                 continue;
  5479.                               }
  5480.                             }
  5481.  
  5482.                           }
  5483.  
  5484.                         }
  5485.  
  5486.                         if (fullDurationSec > 0 && durationSec < 1) continue;
  5487.  
  5488.  
  5489.  
  5490.                       }
  5491.                       arr.push(item)
  5492.                       // arr.unshift(item);
  5493.                     }
  5494.  
  5495.                     
  5496.                     // console.log(arr.slice(0))
  5497.                     this.unshift("items", ...arr);
  5498.                   } else {
  5499.                     this.unshift("items", ...e);
  5500.                   }
  5501.                 }
  5502.                 if (prevBatchId || dateNow - lastDateTime >= 1000) {
  5503.                   this.updateHighlightedItem();
  5504.                   if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5505.                 }
  5506.               })
  5507.  
  5508.             }
  5509.  
  5510.             console.log("AMEND_TICKER_handleLiveChatAction - OK");
  5511.           } else {
  5512.             console.log("AMEND_TICKER_handleLiveChatAction - NG");
  5513.           }
  5514.  
  5515.           if (RAF_FIX_keepScrollClamped) {
  5516.  
  5517.             // to be improved
  5518.  
  5519.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  5520.  
  5521.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  5522.               cProto.keepScrollClamped = function () {
  5523.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  5524.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  5525.                 this.maybeClampScroll()
  5526.               }
  5527.  
  5528.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  5529.             } else {
  5530.  
  5531.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  5532.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  5533.             }
  5534.  
  5535.           }
  5536.  
  5537.  
  5538.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.44.32' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  5539.             // to be replaced by animator
  5540.  
  5541.             cProto.startScrolling = function (a) {
  5542.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  5543.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  5544.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  5545.               this.scrollRatePixelsPerSecond = a;
  5546.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5547.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  5548.             };
  5549.  
  5550.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  5551.  
  5552.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  5553.               const b = a - (this.lastFrameTimestamp || 0);
  5554.               const rate = this.scrollRatePixelsPerSecond
  5555.               const q = b / 1E3 * (rate || 0);
  5556.  
  5557.               const sl = this.$.items.scrollLeft;
  5558.               // console.log(rate, sl, q)
  5559.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  5560.  
  5561.               } else if (q > -1e-5 && q < 1e-5) {
  5562.  
  5563.               } else {
  5564.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  5565.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  5566.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  5567.                 if (cond1 || cond2 || cond3) {
  5568.                   this.$.items.scrollLeft += q;
  5569.                   this.maybeClampScroll();
  5570.                   this.updateArrows();
  5571.                 }
  5572.               }
  5573.  
  5574.               this.lastFrameTimestamp = a;
  5575.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5576.               0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5577.             } : function (a) {
  5578.               const b = a - (this.lastFrameTimestamp || 0);
  5579.               this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  5580.               this.maybeClampScroll();
  5581.               this.updateArrows();
  5582.               this.lastFrameTimestamp = a;
  5583.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5584.               0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5585.             };
  5586.  
  5587.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  5588.           } else {
  5589.             assertor(() => fnIntegrity(cProto.startScrolling, '1.44.32'));
  5590.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  5591.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  5592.           }
  5593.  
  5594.  
  5595.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  5596.  
  5597.             cProto.attached37 = cProto.attached;
  5598.             cProto.detached37 = cProto.detached;
  5599.  
  5600.             let naohzId = 0;
  5601.             cProto.__naohzId__ = 0;
  5602.             cProto.attached = function () {
  5603.               Promise.resolve().then(() => {
  5604.  
  5605.                 const hostElement = this.hostElement || this;
  5606.                 if (!(hostElement instanceof HTMLElement)) return;
  5607.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  5608.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  5609.                 // or #chat-messages
  5610.                 if (!ironPage) return;
  5611.  
  5612.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5613.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  5614.                 this.__naohzId__ = ++naohzId;
  5615.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  5616.  
  5617.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5618.  
  5619.               });
  5620.               return this.attached37.apply(this, arguments);
  5621.             };
  5622.             cProto.detached = function () {
  5623.               Promise.resolve().then(() => {
  5624.  
  5625.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  5626.                 if (!ironPage) return;
  5627.  
  5628.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5629.  
  5630.               });
  5631.               return this.detached37.apply(this, arguments);
  5632.             };
  5633.  
  5634.             const clickFade = (u) => {
  5635.               u.click();
  5636.             };
  5637.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  5638.  
  5639.               const target = (evt || 0).target || 0;
  5640.               if (!target) return;
  5641.  
  5642.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  5643.                 const is = p.is;
  5644.                 if (typeof is === 'string' && is) {
  5645.  
  5646.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  5647.                     return;
  5648.                   }
  5649.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  5650.                     const fade = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  5651.                     if (fade) {
  5652.                       Promise.resolve(fade).then(clickFade);
  5653.                       evt && evt.stopPropagation();
  5654.                     }
  5655.                     return;
  5656.                   }
  5657.                   if (is !== 'yt-live-chat-ticker-renderer') {
  5658.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  5659.                     if (!is.endsWith('-renderer')) return;
  5660.                   }
  5661.  
  5662.                 } else {
  5663.                   if ((p.nodeName || '').includes('BUTTON')) return;
  5664.                 }
  5665.  
  5666.               }
  5667.             };
  5668.  
  5669.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  5670.  
  5671.           } else {
  5672.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  5673.           }
  5674.  
  5675.  
  5676.         })();
  5677.  
  5678.         console.log("[End]");
  5679.  
  5680.         console.groupEnd();
  5681.  
  5682.       }).catch(console.warn);
  5683.  
  5684.  
  5685.       if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  5686.  
  5687.  
  5688.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  5689.  
  5690.           mightFirstCheckOnYtInit();
  5691.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  5692.           console.log("[Begin]");
  5693.           (() => {
  5694.  
  5695.             const tag = "yt-live-chat-message-input-renderer"
  5696.             const dummy = document.createElement(tag);
  5697.  
  5698.             const cProto = getProto(dummy);
  5699.             if (!cProto || !cProto.attached) {
  5700.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5701.               return;
  5702.             }
  5703.  
  5704.             let doHack = false;
  5705.             if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  5706.  
  5707.               // not cancellable
  5708.  
  5709.  
  5710.               doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  5711.  
  5712.             }
  5713.  
  5714.             if (doHack) {
  5715.  
  5716.               cProto.handleTimeout = function (a) {
  5717.                 console.log('cProto.handleTimeout', tag)
  5718.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5719.                 this.timeoutDurationMs = this.timeoutMs = a;
  5720.                 this.countdownRatio = 1;
  5721.                 0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  5722.               };
  5723.               cProto.updateTimeout = function (a) {
  5724.                 console.log('cProto.updateTimeout', tag)
  5725.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5726.                 this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  5727.                   this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  5728.                 this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  5729.                   rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  5730.               };
  5731.  
  5732.               console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  5733.             } else {
  5734.  
  5735.               console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  5736.               console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  5737.  
  5738.               console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  5739.             }
  5740.  
  5741.           })();
  5742.  
  5743.           console.log("[End]");
  5744.  
  5745.           console.groupEnd();
  5746.  
  5747.  
  5748.         })
  5749.  
  5750.  
  5751.       }
  5752.  
  5753.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  5754.  
  5755.  
  5756.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  5757.  
  5758.           mightFirstCheckOnYtInit();
  5759.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  5760.           console.log("[Begin]");
  5761.           (() => {
  5762.  
  5763.             const tag = "yt-emoji-picker-renderer"
  5764.             const dummy = document.createElement(tag);
  5765.  
  5766.             const cProto = getProto(dummy);
  5767.             if (!cProto || !cProto.attached) {
  5768.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5769.               return;
  5770.             }
  5771.  
  5772.             let doHack = false;
  5773.             if (typeof cProto.animateScroll_ === 'function') {
  5774.  
  5775.               // not cancellable
  5776.               console.log('animateScroll_', typeof cProto.animateScroll_)
  5777.  
  5778.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  5779.  
  5780.             }
  5781.  
  5782.             if (doHack) {
  5783.  
  5784.               const querySelector = HTMLElement.prototype.querySelector;
  5785.               const U = (element) => ({
  5786.                 querySelector: (selector) => querySelector.call(element, selector)
  5787.               });
  5788.  
  5789.               cProto.animateScroll_ = function (a) {
  5790.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  5791.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  5792.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  5793.                 a -= this.lastAnimationTime_;
  5794.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  5795.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  5796.                     this.animationEnd_ = this.animationStart_ = null,
  5797.                     this.lastAnimationTime_ = 0);
  5798.                 this.updateButtons_()
  5799.               }
  5800.  
  5801.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  5802.             } else {
  5803.  
  5804.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  5805.             }
  5806.  
  5807.           })();
  5808.  
  5809.           console.log("[End]");
  5810.  
  5811.           console.groupEnd();
  5812.         });
  5813.       }
  5814.  
  5815.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  5816.  
  5817.  
  5818.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  5819.  
  5820.           mightFirstCheckOnYtInit();
  5821.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  5822.           console.log("[Begin]");
  5823.           (() => {
  5824.  
  5825.             const tag = "yt-live-chat-docked-message"
  5826.             const dummy = document.createElement(tag);
  5827.  
  5828.             const cProto = getProto(dummy);
  5829.             if (!cProto || !cProto.attached) {
  5830.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5831.               return;
  5832.             }
  5833.  
  5834.             let doHack = false;
  5835.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  5836.  
  5837.               // cancelable - this.intersectRAF <detached>
  5838.               // yt-live-chat-docked-message
  5839.               // boundCheckIntersections <-> checkIntersections
  5840.               // onDockableMessagesChanged
  5841.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  5842.  
  5843.               console.log('detached', typeof cProto.detached)
  5844.               console.log('checkIntersections', typeof cProto.checkIntersections)
  5845.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  5846.  
  5847.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  5848.  
  5849.             }
  5850.  
  5851.             if (doHack) {
  5852.  
  5853.               cProto.checkIntersections = function () {
  5854.                 // console.log('cProto.checkIntersections', tag)
  5855.                 if (this.dockableMessages.length) {
  5856.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  5857.                   let a = this.dockableMessages[0]
  5858.                     , b = this.hostElement.getBoundingClientRect();
  5859.                   a = a.getBoundingClientRect();
  5860.                   let c = a.top - b.top
  5861.                     , d = 8 >= c;
  5862.                   c = 8 >= c - this.hostElement.clientHeight;
  5863.                   if (d) {
  5864.                     let e;
  5865.                     for (; d;) {
  5866.                       e = this.dockableMessages.shift();
  5867.                       d = this.dockableMessages[0];
  5868.                       if (!d)
  5869.                         break;
  5870.                       d = d.getBoundingClientRect();
  5871.                       c = d.top - b.top;
  5872.                       let f = 8 >= c;
  5873.                       if (8 >= c - a.height)
  5874.                         if (f)
  5875.                           a = d;
  5876.                         else
  5877.                           return;
  5878.                       d = f
  5879.                     }
  5880.                     this.dock(e)
  5881.                   } else
  5882.                     c && this.dockedItem && this.clear()
  5883.                 } else
  5884.                   this.intersectRAF = 0
  5885.               }
  5886.  
  5887.               cProto.onDockableMessagesChanged = function () {
  5888.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  5889.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  5890.               }
  5891.  
  5892.               cProto.detached = function () {
  5893.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  5894.               }
  5895.  
  5896.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  5897.             } else {
  5898.  
  5899.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  5900.             }
  5901.  
  5902.           })();
  5903.  
  5904.           console.log("[End]");
  5905.  
  5906.           console.groupEnd();
  5907.  
  5908.         }).catch(console.warn);
  5909.  
  5910.       }
  5911.  
  5912.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  5913.  
  5914.  
  5915.         customElements.whenDefined("yt-img-shadow").then(() => {
  5916.  
  5917.           mightFirstCheckOnYtInit();
  5918.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  5919.           console.log("[Begin]");
  5920.           (() => {
  5921.  
  5922.             const tag = "yt-img-shadow"
  5923.             const dummy = document.createElement(tag);
  5924.  
  5925.             const cProto = getProto(dummy);
  5926.             if (!cProto || !cProto.attached) {
  5927.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5928.               return;
  5929.             }
  5930.  
  5931.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  5932.  
  5933.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  5934.               cProto.thumbnailChanged_ = function (a) {
  5935.  
  5936.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  5937.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  5938.  
  5939.                 return this.thumbnailChanged66_.apply(this, arguments)
  5940.  
  5941.               }
  5942.               console.log("cProto.thumbnailChanged_ - OK");
  5943.  
  5944.             } else {
  5945.               console.log("cProto.thumbnailChanged_ - NG");
  5946.  
  5947.             }
  5948.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  5949.  
  5950.               cProto.setSrc66_ = cProto.setSrc_;
  5951.               cProto.setSrc_ = function (a) {
  5952.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  5953.                 return this.setSrc66_.apply(this, arguments)
  5954.               }
  5955.  
  5956.               console.log("cProto.setSrc_ - OK");
  5957.             } else {
  5958.  
  5959.               console.log("cProto.setSrc_ - NG");
  5960.             }
  5961.  
  5962.           })();
  5963.  
  5964.           console.log("[End]");
  5965.  
  5966.           console.groupEnd();
  5967.  
  5968.         }).catch(console.warn);
  5969.  
  5970.       }
  5971.  
  5972.       if (FIX_THUMBNAIL_DATACHANGED) {
  5973.  
  5974.  
  5975.  
  5976.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  5977.  
  5978.           mightFirstCheckOnYtInit();
  5979.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  5980.           console.log("[Begin]");
  5981.           (() => {
  5982.  
  5983.             const tag = "yt-live-chat-author-badge-renderer"
  5984.             const dummy = document.createElement(tag);
  5985.  
  5986.             const cProto = getProto(dummy);
  5987.             if (!cProto || !cProto.attached) {
  5988.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5989.               return;
  5990.             }
  5991.  
  5992.  
  5993.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  5994.  
  5995.  
  5996.  
  5997.               cProto.dataChanged86 = cProto.dataChanged;
  5998.               cProto.dataChanged = function (a) {
  5999.  
  6000.                 /*
  6001.  
  6002.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  6003.                       b.removeChild(b.firstChild);
  6004.                   if (a)
  6005.                       if (a.icon) {
  6006.                           var c = document.createElement("yt-icon");
  6007.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  6008.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  6009.                           b.appendChild(c)
  6010.                       } else if (a.customThumbnail) {
  6011.                           c = document.createElement("img");
  6012.                           var d;
  6013.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6014.                           b.appendChild(c),
  6015.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  6016.                       }
  6017.  
  6018.                 */
  6019.  
  6020.                 const image = ((this || 0).$ || 0).image
  6021.                 if (image && a && image.firstElementChild) {
  6022.                   let exisiting = image.firstElementChild;
  6023.                   if (exisiting === image.lastElementChild) {
  6024.  
  6025.  
  6026.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  6027.  
  6028.                       let c = exisiting;
  6029.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  6030.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  6031.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  6032.                       } else {
  6033.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  6034.                         if (c.icon !== p) c.icon = p;
  6035.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  6036.                       }
  6037.                       return;
  6038.  
  6039.  
  6040.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  6041.  
  6042.                       let c = exisiting;
  6043.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  6044.  
  6045.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  6046.                         return;
  6047.                       }
  6048.                       /*
  6049.  
  6050.                       var d;
  6051.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6052.  
  6053.  
  6054.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  6055.                         */
  6056.                     }
  6057.  
  6058.  
  6059.                   }
  6060.                 }
  6061.                 return this.dataChanged86.apply(this, arguments)
  6062.  
  6063.               }
  6064.               console.log("cProto.dataChanged - OK");
  6065.  
  6066.             } else {
  6067.               assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  6068.               console.log("cProto.dataChanged - NG");
  6069.  
  6070.             }
  6071.  
  6072.           })();
  6073.  
  6074.           console.log("[End]");
  6075.  
  6076.           console.groupEnd();
  6077.  
  6078.         }).catch(console.warn);
  6079.  
  6080.  
  6081.       }
  6082.  
  6083.  
  6084.       if (FIX_TOOLTIP_DISPLAY) {
  6085.  
  6086.  
  6087.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  6088.  
  6089.           mightFirstCheckOnYtInit();
  6090.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  6091.           console.log("[Begin]");
  6092.           (() => {
  6093.  
  6094.             const tag = "tp-yt-paper-tooltip"
  6095.             const dummy = document.createElement(tag);
  6096.  
  6097.             const cProto = getProto(dummy);
  6098.             if (!cProto || !cProto.attached) {
  6099.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6100.               return;
  6101.             }
  6102.  
  6103.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  6104.  
  6105.               cProto._readyClients43 = cProto._readyClients;
  6106.               cProto._readyClients = function () {
  6107.                 let r = cProto._readyClients43.apply(this, arguments);
  6108.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  6109.                 return r;
  6110.               }
  6111.  
  6112.               console.log("_readyClients - OK");
  6113.  
  6114.             } else {
  6115.               console.log("_readyClients - NG");
  6116.  
  6117.             }
  6118.  
  6119.             if (typeof cProto.show === 'function' && !cProto.show17) {
  6120.               cProto.show17 = cProto.show;
  6121.               cProto.show = function () {
  6122.  
  6123.                 let r = this.show17.apply(this, arguments);
  6124.                 this._showing === true && Promise.resolve().then(() => {
  6125.                   const tooltip = (this.$ || 0).tooltip;
  6126.  
  6127.                   if (tooltip && tooltip.firstElementChild === null) {
  6128.                     let text = tooltip.textContent;
  6129.                     if (typeof text === 'string' && text.length >= 2) {
  6130.                       tooltip.textContent = text.trim();
  6131.                     }
  6132.                   }
  6133.                 }).catch(console.warn)
  6134.                 return r;
  6135.               }
  6136.  
  6137.               console.log("trim tooltip content - OK");
  6138.  
  6139.             } else {
  6140.               console.log("trim tooltip content - NG");
  6141.  
  6142.             }
  6143.  
  6144.             /*
  6145.             cProto.updatePosition61 = cProto.updatePosition;
  6146.  
  6147.  
  6148.             cProto.updatePosition = function () {
  6149.  
  6150.  
  6151.               if (this._target && this.offsetParent) {
  6152.                 var a = this.offset;
  6153.                 14 != this.marginTop && 14 == this.offset && (a = this.marginTop);
  6154.                 var b = this.offsetParent.getBoundingClientRect()
  6155.                   , c = this._target.getBoundingClientRect()
  6156.                   , d = this.getBoundingClientRect()
  6157.                   , e = (c.width - d.width) / 2
  6158.                   , h = (c.height - d.height) / 2
  6159.                   , l = c.left - b.left
  6160.                   , m = c.top - b.top;
  6161.                 switch (this.position) {
  6162.                   case "top":
  6163.                     var p = l + e;
  6164.                     var q = m - d.height - a;
  6165.                     break;
  6166.                   case "bottom":
  6167.                     p = l + e;
  6168.                     q = m + c.height + a;
  6169.                     break;
  6170.                   case "left":
  6171.                     p = l - d.width - a;
  6172.                     q = m + h;
  6173.                     break;
  6174.                   case "right":
  6175.                     p = l + c.width + a,
  6176.                       q = m + h;
  6177.                 }
  6178.  
  6179.               if(this.ascee) {
  6180.                 this.fitToVisibleBounds = false;
  6181.               }
  6182.                 this.fitToVisibleBounds ? (b.left + p + d.width > window.innerWidth ? (this.style.right = "0px",
  6183.                   this.style.left = "auto") : (this.style.left = Math.max(0, p) + "px",
  6184.                     this.style.right = "auto"),
  6185.                   b.top + q + d.height > window.innerHeight ? (this.style.bottom = b.height + "px",
  6186.                     this.style.top = "auto") : (this.style.top = Math.max(-b.top, q) + "px",
  6187.                       this.style.bottom = "auto")) : (this.style.left = p + "px",
  6188.                         this.style.top = q + "px")
  6189.               }
  6190.             }
  6191.  
  6192.             cProto.updateStyles61 = cProto.updateStyles;
  6193.             cProto.updateStyles= function(){
  6194.               if(this.ascee) return;
  6195.               return this.updateStyles61.apply(this,arguments);
  6196.             }
  6197.             */
  6198.  
  6199.  
  6200.           })();
  6201.  
  6202.           console.log("[End]");
  6203.  
  6204.           console.groupEnd();
  6205.  
  6206.         }).catch(console.warn);
  6207.  
  6208.  
  6209.  
  6210.       }
  6211.  
  6212.  
  6213.  
  6214.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  6215.  
  6216.  
  6217.         const hookDocumentMouseDownSetupFn = () => {
  6218.  
  6219.  
  6220.  
  6221.           let muzTimestamp = 0;
  6222.           let nszDropdown = null;
  6223.  
  6224.  
  6225.  
  6226.           const handlerObject = {
  6227.  
  6228.             // mdHandler282 : function (evt) {
  6229.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6230.             //   if (!evt || !evt.isTrusted) return;
  6231.             //   muzTimestamp = 0;
  6232.             //   nszDropdown = null;
  6233.  
  6234.             //   const hostElement = this.hostElement || this;
  6235.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  6236.             //   if (!hostElement.contains(evt.target)) return;
  6237.             //   let targetDropDown = null;
  6238.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  6239.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  6240.             //       targetDropDown = dropdown;
  6241.             //     }
  6242.             //   }
  6243.             //   if ((nszDropdown = targetDropDown)) {
  6244.             //     muzTimestamp = Date.now();
  6245.             //     evt.stopImmediatePropagation();
  6246.             //     evt.stopPropagation();
  6247.             //   }
  6248.  
  6249.             // },
  6250.  
  6251.  
  6252.             muHandler282: function (evt) {
  6253.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6254.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6255.               const dropdown = nszDropdown;
  6256.               muzTimestamp = 0;
  6257.               nszDropdown = null;
  6258.  
  6259.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  6260.               const hostElement = kurMPC.hostElement || kurMPC;
  6261.               if (!hostElement.hasAttribute('menu-visible')) return;
  6262.  
  6263.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  6264.               if (chatBanner) return;
  6265.  
  6266.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  6267.  
  6268.                 /*
  6269.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6270.                 if(parentButton) return;
  6271.                 */
  6272.  
  6273.                 muzTimestamp = Date.now();
  6274.                 evt.stopImmediatePropagation();
  6275.                 evt.stopPropagation();
  6276.                 Promise.resolve(dropdown).then((dropdown) => {
  6277.                   dropdown.cancel();
  6278.                 });
  6279.                 // document.body.click();
  6280.               }
  6281.  
  6282.             },
  6283.  
  6284.             mlHandler282: function (evt) {
  6285.               muzTimestamp = 0;
  6286.               nszDropdown = null;
  6287.             },
  6288.  
  6289.             ckHandler282: function (evt) {
  6290.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6291.  
  6292.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6293.               if (Date.now() - muzTimestamp < 40) {
  6294.  
  6295.                 /*
  6296.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6297.                 if(parentButton) return;
  6298.                 */
  6299.  
  6300.                 muzTimestamp = Date.now();
  6301.                 evt.stopImmediatePropagation();
  6302.                 evt.stopPropagation();
  6303.               }
  6304.  
  6305.             },
  6306.  
  6307.             tapHandler282: function (evt) {
  6308.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6309.  
  6310.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6311.               if (Date.now() - muzTimestamp < 40) {
  6312.  
  6313.                 /*
  6314.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6315.                 if(parentButton) return;
  6316.                 */
  6317.  
  6318.                 muzTimestamp = Date.now();
  6319.                 evt.stopImmediatePropagation();
  6320.                 evt.stopPropagation();
  6321.               }
  6322.  
  6323.             },
  6324.  
  6325.  
  6326.             handleEvent(evt) {
  6327.  
  6328.  
  6329.               if (evt) {
  6330.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  6331.                 const cnt = kurMPC.inst || kurMPC;
  6332.                 const hostElement = cnt.hostElement || cnt;
  6333.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  6334.                 switch (evt.type) {
  6335.                   // case 'mousedown':
  6336.                   // return this.mdHandler282.call(kurMPC, evt);
  6337.                   case 'mouseup':
  6338.                     return this.muHandler282(evt);
  6339.                   case 'mouseleave':
  6340.                     return this.mlHandler282(evt);
  6341.                   case 'tap':
  6342.                     return this.tapHandler282(evt);
  6343.                   case 'click':
  6344.                     return this.ckHandler282(evt);
  6345.                 }
  6346.               }
  6347.  
  6348.             }
  6349.  
  6350.  
  6351.  
  6352.           }
  6353.  
  6354.           document.addEventListener('mousedown', function (evt) {
  6355.  
  6356.             if (!evt || !evt.isTrusted || !evt.target) return;
  6357.  
  6358.  
  6359.  
  6360.             muzTimestamp = 0;
  6361.             nszDropdown = null;
  6362.  
  6363.             /*
  6364.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6365.             if(parentButton){
  6366.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  6367.               if(kurMPC){
  6368.                 evt.preventDefault();
  6369.                 evt.stopImmediatePropagation();
  6370.                 evt.stopPropagation();
  6371.               }
  6372.               return;
  6373.             }
  6374.             */
  6375.  
  6376.             /** @type {HTMLElement | null} */
  6377.             const kurMP = kRef(currentMenuPivotWR);
  6378.             if (!kurMP) return;
  6379.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  6380.  
  6381.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  6382.  
  6383.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  6384.  
  6385.             const chatBanner = HTMLElement.prototype.closest.call(kurMPC, 'yt-live-chat-banner-renderer') || 0;
  6386.             if (chatBanner) return;
  6387.  
  6388.  
  6389.             let targetDropDown = null;
  6390.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  6391.               if (dropdown && dropdown.positionTarget === kurMP) {
  6392.                 targetDropDown = dropdown;
  6393.               }
  6394.             }
  6395.  
  6396.             if (!targetDropDown) return;
  6397.  
  6398.  
  6399.             /*
  6400.             if (parentButton) {
  6401.               evt.preventDefault();
  6402.               evt.stopImmediatePropagation();
  6403.               evt.stopPropagation();
  6404.               currentMenuPivotWR = mWeakRef(kurMPC);
  6405.               return;
  6406.             }
  6407.             */
  6408.  
  6409.             if ((nszDropdown = targetDropDown)) {
  6410.               muzTimestamp = Date.now();
  6411.               evt.stopImmediatePropagation();
  6412.               evt.stopPropagation();
  6413.               currentMenuPivotWR = mWeakRef(kurMPC);
  6414.  
  6415.               const listenOpts = { capture: true, passive: false, once: true };
  6416.  
  6417.               // remove unexcecuted eventHandler
  6418.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  6419.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  6420.               document.removeEventListener('tap', handlerObject, listenOpts);
  6421.               document.removeEventListener('click', handlerObject, listenOpts);
  6422.  
  6423.               // inject one time eventHandler to by pass events
  6424.               document.addEventListener('mouseup', handlerObject, listenOpts);
  6425.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  6426.               document.addEventListener('tap', handlerObject, listenOpts);
  6427.               document.addEventListener('click', handlerObject, listenOpts);
  6428.  
  6429.             }
  6430.  
  6431.           }, true);
  6432.  
  6433.         }
  6434.  
  6435.  
  6436.         // yt-live-chat-paid-message-renderer ??
  6437.  
  6438.         /*
  6439.  
  6440.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  6441.  
  6442.  
  6443.         "yt-live-chat-ticker-paid-message-item-renderer"
  6444.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  6445.         "yt-live-chat-paid-message-renderer"
  6446.         "yt-live-chat-text-message-renderer"
  6447.         "yt-live-chat-paid-sticker-renderer"
  6448.  
  6449.         */
  6450.  
  6451.  
  6452.         whenDefinedMultiple([
  6453.  
  6454.           "yt-live-chat-paid-message-renderer",
  6455.           "yt-live-chat-membership-item-renderer",
  6456.           "yt-live-chat-paid-sticker-renderer",
  6457.           "yt-live-chat-text-message-renderer",
  6458.           "yt-live-chat-auto-mod-message-renderer",
  6459.  
  6460.           /*
  6461.           "yt-live-chat-ticker-paid-message-item-renderer",
  6462.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  6463.           "yt-live-chat-paid-message-renderer",
  6464.           "yt-live-chat-text-message-renderer",
  6465.           "yt-live-chat-paid-sticker-renderer",
  6466.  
  6467.           "yt-live-chat-ticker-sponsor-item-renderer",
  6468.           "yt-live-chat-banner-header-renderer",
  6469.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6470.           "ytd-sponsorships-live-chat-header-renderer",
  6471.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6472.  
  6473.  
  6474.  
  6475.  
  6476.           "yt-live-chat-auto-mod-message-renderer",
  6477.           "yt-live-chat-text-message-renderer",
  6478.           "yt-live-chat-paid-message-renderer",
  6479.  
  6480.           "yt-live-chat-legacy-paid-message-renderer",
  6481.           "yt-live-chat-membership-item-renderer",
  6482.           "yt-live-chat-paid-sticker-renderer",
  6483.           "yt-live-chat-donation-announcement-renderer",
  6484.           "yt-live-chat-moderation-message-renderer",
  6485.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6486.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6487.           "yt-live-chat-viewer-engagement-message-renderer",
  6488.  
  6489.           */
  6490.  
  6491.  
  6492.         ]).then(sTags => {
  6493.  
  6494.  
  6495.           mightFirstCheckOnYtInit();
  6496.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  6497.           console.log("[Begin]");
  6498.           let doMouseHook = false;
  6499.  
  6500.           const dProto = {
  6501.             isClickableChatRow111: function () {
  6502.               return (
  6503.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  6504.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  6505.               ); // follow .onItemTap(a)
  6506.             }
  6507.           };
  6508.  
  6509.           for (const sTag of sTags) { // ##tag##
  6510.  
  6511.  
  6512.             (() => {
  6513.  
  6514.  
  6515.  
  6516.               const tag = sTag;
  6517.               const dummy = document.createElement(tag);
  6518.  
  6519.               const cProto = getProto(dummy);
  6520.               if (!cProto || !cProto.attached) {
  6521.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  6522.                 return;
  6523.               }
  6524.  
  6525.  
  6526.               const dCnt = dummy || dummy.inst || 0;
  6527.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  6528.  
  6529.  
  6530.  
  6531.  
  6532.  
  6533.  
  6534.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  6535.  
  6536.  
  6537.  
  6538.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  6539.  
  6540.                 if (toHookDocumentMouseDown) {
  6541.                   doMouseHook = true;
  6542.                 }
  6543.  
  6544.  
  6545.  
  6546.                 console.log("shouldSupportWholeItemClick Y", tag);
  6547.  
  6548.  
  6549.               } else {
  6550.  
  6551.                 console.log("shouldSupportWholeItemClick N", tag);
  6552.               }
  6553.  
  6554.  
  6555.  
  6556.             })();
  6557.  
  6558.           }
  6559.  
  6560.  
  6561.           if (doMouseHook) {
  6562.  
  6563.             hookDocumentMouseDownSetupFn();
  6564.  
  6565.  
  6566.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  6567.           }
  6568.  
  6569.           console.log("[End]");
  6570.  
  6571.           console.groupEnd();
  6572.  
  6573.  
  6574.         }).catch(console.warn);
  6575.  
  6576.  
  6577.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  6578.  
  6579.  
  6580.       }
  6581.  
  6582.  
  6583.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  6584.  
  6585.         let rr = null;
  6586.         const p1 = new Promise(resolve => {
  6587.           rr = resolve;
  6588.         });
  6589.  
  6590.         const p1unlock = () => {
  6591.           const f = rr;
  6592.           if (f) {
  6593.             rr = null;
  6594.             f();
  6595.           }
  6596.         }
  6597.  
  6598.         return {
  6599.           p1,
  6600.           p1unlock,
  6601.           assignLock: (targetCnt, timeout) => {
  6602.             targetCnt.__showContextMenu_assign_lock__(p1);
  6603.             if (timeout) setTimeout(p1unlock, timeout);
  6604.           }
  6605.         }
  6606.  
  6607.       }
  6608.  
  6609.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  6610.  
  6611.         document.addEventListener('mousedown', function (evt) {
  6612.  
  6613.           const maxloopDOMTreeElements = 4;
  6614.           const maxloopYtCompontents = 4;
  6615.           let j1 = 0;
  6616.           let j2 = 0;
  6617.           let target = (evt || 0).target || 0;
  6618.           if (!target) return;
  6619.  
  6620.  
  6621.           while (target instanceof HTMLElement) {
  6622.             if (++j1 > maxloopDOMTreeElements) break;
  6623.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') break;
  6624.             target = nodeParent(target);
  6625.           }
  6626.           const components = [];
  6627.           while (target instanceof HTMLElement) {
  6628.             if (++j2 > maxloopYtCompontents) break;
  6629.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') {
  6630.               components.push(target);
  6631.             }
  6632.             if (typeof (target.inst || target).showContextMenu === 'function') break;
  6633.             target = target.parentComponent || (target.inst || 0).parentComponent || null;
  6634.           }
  6635.           if (!(target instanceof HTMLElement)) return;
  6636.           const targetCnt = target.inst || target;
  6637.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  6638.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  6639.             return;
  6640.           }
  6641.  
  6642.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  6643.           if (!endpoint) return;
  6644.           if (targetCnt.opened || !targetCnt.isAttached) return;
  6645.  
  6646.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  6647.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  6648.           }
  6649.  
  6650.           let doPreRequest = false;
  6651.           if (components.length >= 2 && components[0].id === 'menu-button' && (target.$ || 0)['menu-button'] === components[0]) {
  6652.             doPreRequest = true;
  6653.           } else if (components.length === 1 && components[0] === target) {
  6654.             doPreRequest = true;
  6655.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (target.$ || 0)['author-photo'] === components[0]) {
  6656.             doPreRequest = true;
  6657.           }
  6658.           if (doPreRequest === false) {
  6659.             console.log('doPreRequest = fasle on showContextMenu', components);
  6660.             return;
  6661.           }
  6662.  
  6663.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  6664.  
  6665.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  6666.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  6667.             return;
  6668.           }
  6669.  
  6670.  
  6671.           const onSuccess = (a) => {
  6672.             /*
  6673.  
  6674.               dQ() && (a = a.response);
  6675.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6676.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  6677.  
  6678.             */
  6679.  
  6680.             a = a.response || a;
  6681.  
  6682.             if (!a) {
  6683.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  6684.               return;
  6685.             }
  6686.  
  6687.             let z = null;
  6688.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6689.  
  6690.             if (z) {
  6691.               a = z;
  6692.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  6693.             }
  6694.  
  6695.           };
  6696.           const onFailure = (a) => {
  6697.  
  6698.             /*
  6699.  
  6700.               if (a instanceof Error || a instanceof Object || a instanceof String)
  6701.                   var b = a;
  6702.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  6703.  
  6704.             */
  6705.  
  6706.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  6707.             // console.log('onFailure', a)
  6708.  
  6709.           };
  6710.  
  6711.           if (doPreRequest) {
  6712.  
  6713.             let propertyCounter = 0;
  6714.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  6715.             const p1Timeout = 800;
  6716.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  6717.  
  6718.             try {
  6719.  
  6720.               const onSuccessHelperFn = function () {
  6721.                 pm1.p1unlock();
  6722.                 if (propertyCounter !== 5) {
  6723.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  6724.                   return;
  6725.                 }
  6726.                 if (this[proxyKey] !== targetCnt) {
  6727.                   console.log('Error in prerequest for showContextMenu.this');
  6728.                   return;
  6729.                 }
  6730.                 onSuccess(...arguments);
  6731.               };
  6732.               const onFailureHelperFn = function () {
  6733.                 pm1.p1unlock();
  6734.                 if (propertyCounter !== 5) {
  6735.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  6736.                   return;
  6737.                 }
  6738.                 if (this[proxyKey] !== targetCnt) {
  6739.                   console.log('Error in prerequest for showContextMenu.this');
  6740.                   return;
  6741.                 }
  6742.                 onFailure(...arguments);
  6743.  
  6744.               }
  6745.               const fakeTargetCnt = new Proxy({
  6746.                 __showContextMenu_forceNativeRequest__: 1,
  6747.                 __showContextMenu_sync_mode_request__: 1,
  6748.                 get handleGetContextMenuResponse_() {
  6749.                   propertyCounter += 2;
  6750.                   return onSuccessHelperFn;
  6751.                 },
  6752.                 get handleGetContextMenuError() {
  6753.                   propertyCounter += 3;
  6754.                   return onFailureHelperFn;
  6755.                 }
  6756.               }, {
  6757.                 get(_, key, receiver) {
  6758.                   if (key in _) return _[key];
  6759.                   if (key === proxyKey) return targetCnt;
  6760.  
  6761.                   let giveNative = false;
  6762.                   if (key in targetCnt) {
  6763.                     if (key === 'data') giveNative = true;
  6764.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  6765.                   }
  6766.                   if (giveNative) return targetCnt[key];
  6767.                 }
  6768.               });
  6769.  
  6770.               const fakeEvent = (() => {
  6771.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  6772.                 const nf = function () { }
  6773.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  6774.  
  6775.                 return {
  6776.                   type: 'tap',
  6777.                   eventPhase: 0,
  6778.                   isTrusted: false,
  6779.                   __composed: true,
  6780.                   bubbles, cancelable, cancelBubble, timeStamp,
  6781.                   target, srcElement, defaultPrevented, currentTarget, composed,
  6782.                   stopPropagation, stopImmediatePropagation, preventDefault
  6783.                 };
  6784.               })(evt);
  6785.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  6786.  
  6787.  
  6788.             } catch (e) {
  6789.               console.warn(e);
  6790.               propertyCounter = 7;
  6791.  
  6792.             }
  6793.             if (propertyCounter !== 5) {
  6794.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  6795.               return;
  6796.             }
  6797.  
  6798.             pm1.assignLock(targetCnt, p1Timeout);
  6799.  
  6800.           }
  6801.  
  6802.  
  6803.  
  6804.  
  6805.  
  6806.  
  6807.         }, true);
  6808.  
  6809.  
  6810.       }
  6811.  
  6812.  
  6813.  
  6814.       /*
  6815.  
  6816.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  6817.  
  6818.       */
  6819.  
  6820.       whenDefinedMultiple([
  6821.         "yt-live-chat-ticker-sponsor-item-renderer",
  6822.         "yt-live-chat-banner-header-renderer",
  6823.         "yt-live-chat-text-message-renderer",
  6824.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6825.         "ytd-sponsorships-live-chat-header-renderer",
  6826.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6827.  
  6828.         "yt-live-chat-paid-sticker-renderer",
  6829.         "yt-live-chat-viewer-engagement-message-renderer",
  6830.         "yt-live-chat-paid-message-renderer"
  6831.  
  6832.  
  6833.  
  6834.  
  6835.       ]).then(sTags => {
  6836.  
  6837.         mightFirstCheckOnYtInit();
  6838.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  6839.         console.log("[Begin]");
  6840.  
  6841.  
  6842.         const __showContextMenu_mutex__ = new Mutex();
  6843.         let __showContextMenu_mutex_unlock__ = null;
  6844.         let lastShowMenuTarget = null;
  6845.  
  6846.  
  6847.  
  6848.  
  6849.         const wm37 = new WeakMap();
  6850.  
  6851.         const dProto = {
  6852.  
  6853.  
  6854.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  6855.  
  6856.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  6857.             if (a) {
  6858.               if (doDeepCopy) a = deepCopy(a);
  6859.               wm37.set(endpoint, a);
  6860.             } else {
  6861.               wm37.remove(endpoint);
  6862.             }
  6863.           },
  6864.           __getCachedEndpointData__: function (endpoint) {
  6865.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  6866.             if (endpoint) return wm37.get(endpoint);
  6867.             return null;
  6868.           },
  6869.           /** @type {(resolvedEndpoint: any) => void 0} */
  6870.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  6871.  
  6872.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  6873.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  6874.             Promise.resolve(resolvedEndpoint).then(() => {
  6875.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  6876.               this.showContextMenu_(resolvedEndpoint);
  6877.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  6878.             });
  6879.  
  6880.  
  6881.           },
  6882.  
  6883.  
  6884.  
  6885.           showContextMenuForCacheReopen: function (a) {
  6886.             if (!this.__showContextMenu_forceNativeRequest__) {
  6887.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6888.               if (endpoint) {
  6889.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  6890.                 if (resolvedEndpoint) {
  6891.                   this.__showCachedContextMenu__(resolvedEndpoint);
  6892.                   a && a.stopPropagation()
  6893.                   return;
  6894.                 }
  6895.               }
  6896.             }
  6897.             return this.showContextMenu37(a);
  6898.           },
  6899.  
  6900.           showContextMenuForCacheReopen_: function (a) {
  6901.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  6902.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6903.               if (endpoint) {
  6904.                 const f = this.__cacheResolvedEndpointData__;
  6905.                 if (typeof f === 'function') f(endpoint, a, true);
  6906.               }
  6907.             }
  6908.             return this.showContextMenu37_(a);
  6909.           },
  6910.  
  6911.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  6912.  
  6913.           showContextMenuWithDisableScroll: function (a) {
  6914.  
  6915.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6916.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  6917.  
  6918.               const parentComponent = this.parentComponent;
  6919.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  6920.                 parentComponent.allowScroll = false;
  6921.               }
  6922.             }
  6923.  
  6924.             return this.showContextMenu48.apply(this, arguments);
  6925.  
  6926.           },
  6927.  
  6928.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  6929.  
  6930.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  6931.             return __showContextMenu_mutex_unlock__ === null;
  6932.           },
  6933.  
  6934.           __showContextMenu_assign_lock__: function (p) {
  6935.  
  6936.             const mutex = __showContextMenu_mutex__;
  6937.  
  6938.             mutex.lockWith(unlock => {
  6939.               p.then(unlock);
  6940.             });
  6941.  
  6942.           },
  6943.  
  6944.           showContextMenuWithMutex: function (a) {
  6945.             lastShowMenuTarget = this;
  6946.  
  6947.             if (this.__showContextMenu_sync_mode_request__) {
  6948.  
  6949.               return this.showContextMenu47(a);
  6950.             } else {
  6951.  
  6952.               const mutex = __showContextMenu_mutex__;
  6953.  
  6954.               mutex.lockWith(unlock => {
  6955.                 if (lastShowMenuTarget !== this) {
  6956.                   unlock();
  6957.                   return;
  6958.                 }
  6959.  
  6960.                 setTimeout(unlock, 800); // in case network failure
  6961.                 __showContextMenu_mutex_unlock__ = unlock;
  6962.                 try {
  6963.                   this.showContextMenu47(a);
  6964.                 } catch (e) {
  6965.                   console.warn(e);
  6966.                   unlock(); // in case function script error
  6967.                 }
  6968.  
  6969.               });
  6970.  
  6971.             }
  6972.  
  6973.  
  6974.           },
  6975.  
  6976.           showContextMenuWithMutex_: function (a) {
  6977.  
  6978.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  6979.               __showContextMenu_mutex_unlock__();
  6980.               __showContextMenu_mutex_unlock__ = null;
  6981.             }
  6982.             return this.showContextMenu47_(a);
  6983.  
  6984.           }
  6985.  
  6986.         }
  6987.  
  6988.         for (const tag of sTags) { // ##tag##
  6989.  
  6990.  
  6991.  
  6992.           (() => {
  6993.  
  6994.             const dummy = document.createElement(tag);
  6995.  
  6996.             const cProto = getProto(dummy);
  6997.             if (!cProto || !cProto.attached) {
  6998.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6999.               return;
  7000.             }
  7001.  
  7002.  
  7003.  
  7004.  
  7005.             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) {
  7006.  
  7007.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  7008.               cProto.showContextMenu37 = cProto.showContextMenu;
  7009.  
  7010.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  7011.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  7012.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  7013.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  7014.  
  7015.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  7016.  
  7017.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  7018.  
  7019.  
  7020.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  7021.  
  7022.  
  7023.  
  7024.             } else {
  7025.  
  7026.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  7027.  
  7028.             }
  7029.  
  7030.  
  7031.  
  7032.             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) {
  7033.  
  7034.  
  7035.               cProto.showContextMenu48 = cProto.showContextMenu;
  7036.  
  7037.  
  7038.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  7039.  
  7040.  
  7041.  
  7042.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7043.  
  7044.  
  7045.  
  7046.             } else {
  7047.  
  7048.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7049.  
  7050.             }
  7051.  
  7052.  
  7053.  
  7054.  
  7055.  
  7056.             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) {
  7057.  
  7058.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  7059.               cProto.showContextMenu47 = cProto.showContextMenu;
  7060.  
  7061.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  7062.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  7063.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  7064.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  7065.  
  7066.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7067.  
  7068.  
  7069.  
  7070.             } else {
  7071.  
  7072.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7073.  
  7074.             }
  7075.  
  7076.  
  7077.  
  7078.  
  7079.           })();
  7080.  
  7081.         }
  7082.  
  7083.  
  7084.  
  7085.         console.log("[End]");
  7086.  
  7087.         console.groupEnd();
  7088.  
  7089.       }).catch(console.warn);
  7090.  
  7091.  
  7092.  
  7093.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  7094.  
  7095.         mightFirstCheckOnYtInit();
  7096.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  7097.         console.log("[Begin]");
  7098.         (() => {
  7099.  
  7100.           const tag = "tp-yt-iron-dropdown";
  7101.           const dummy = document.createElement(tag);
  7102.  
  7103.           const cProto = getProto(dummy);
  7104.           if (!cProto || !cProto.attached) {
  7105.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7106.             return;
  7107.           }
  7108.  
  7109.  
  7110.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  7111.             cProto.__deraf_hn__ = function (sId, fn) {
  7112.               const rhKey = `_rafHandler_${sId}`;
  7113.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  7114.               if (m.has(fn)) return m.get(fn);
  7115.               const resFn = () => {
  7116.                 this.__rafs[sId] = null;
  7117.                 fn.call(this)
  7118.               };
  7119.               m.set(fn, resFn);
  7120.               m.set(resFn, resFn);
  7121.               return resFn;
  7122.             };
  7123.             cProto.__deraf34 = cProto.__deraf;
  7124.             cProto.__deraf = function (a, b) { // sId, fn
  7125.               let c = this.__rafs;
  7126.               null !== c[a] && cancelAnimationFrame(c[a]);
  7127.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  7128.             };
  7129.             console.log("USE_VANILLA_DEREF - OK");
  7130.           } else {
  7131.             console.log("USE_VANILLA_DEREF - NG");
  7132.           }
  7133.  
  7134.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  7135.             cProto.__deraf66 = cProto.__deraf;
  7136.             cProto.__deraf = function (sId, fn) {
  7137.               if (this.__byPassRAF__) {
  7138.                 Promise.resolve().then(() => {
  7139.                   fn.call(this);
  7140.                 });
  7141.               }
  7142.               let r = this.__deraf66.apply(this, arguments);
  7143.               return r;
  7144.             }
  7145.             console.log("FIX_DROPDOWN_DERAF - OK");
  7146.           } else {
  7147.             console.log("FIX_DROPDOWN_DERAF - NG");
  7148.           }
  7149.  
  7150.  
  7151.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  7152.  
  7153.             let lastClose = null;
  7154.             let lastOpen = null;
  7155.             let cid = 0;
  7156.  
  7157.             cProto.__mtChanged__ = function (b) {
  7158.  
  7159.               Promise.resolve().then(() => {
  7160.                 this._applyFocus();
  7161.               }).then(() => {
  7162.                 b ? this._renderOpened() : this._renderClosed();
  7163.               }).catch(console.warn);
  7164.  
  7165.             };
  7166.  
  7167.             const __moChanged__ = () => {
  7168.               if (!cid) return;
  7169.               // console.log(553, !!lastOpen, !!lastClose);
  7170.               cid = 0;
  7171.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  7172.                 lastOpen.__mtChanged__(1)
  7173.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  7174.                 lastClose.__mtChanged__(0);
  7175.               }
  7176.               lastOpen = null;
  7177.               lastClose = null;
  7178.             };
  7179.  
  7180.  
  7181.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  7182.               cProto._openedChanged66 = cProto._openedChanged;
  7183.               cProto._openedChanged = function () {
  7184.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  7185.                 this.__byPassRAF__ = true;
  7186.                 let r = this._openedChanged66.apply(this, arguments);
  7187.                 this.__byPassRAF__ = false;
  7188.                 return r;
  7189.               }
  7190.             }
  7191.  
  7192.             const pSetGet = (key, pdThis, pdBase) => {
  7193.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  7194.               return {
  7195.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  7196.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  7197.               };
  7198.             };
  7199.  
  7200.             cProto.__modifiedMenuPropsFn__ = function () {
  7201.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  7202.               const pdBase = Object.getOwnPropertyDescriptors(this)
  7203.  
  7204.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  7205.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  7206.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  7207.  
  7208.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  7209.                 console.warn('there is setter/getter for autoFitOnAttach');
  7210.                 return;
  7211.               }
  7212.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  7213.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  7214.                 return;
  7215.               }
  7216.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  7217.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  7218.                 return;
  7219.               }
  7220.  
  7221.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  7222.  
  7223.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  7224.  
  7225.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  7226.  
  7227.               Object.defineProperties(this, {
  7228.                 autoFitOnAttach: {
  7229.                   get() {
  7230.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  7231.                     return autoFitOnAttach;
  7232.                   },
  7233.                   set(nv) {
  7234.                     autoFitOnAttach = nv;
  7235.                     return true;
  7236.                   },
  7237.                   enumerable: true,
  7238.                   configurable: true
  7239.                 }, expandSizingTargetForScrollbars: {
  7240.                   get() {
  7241.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  7242.                     return expandSizingTargetForScrollbars;
  7243.                   },
  7244.                   set(nv) {
  7245.                     expandSizingTargetForScrollbars = nv;
  7246.                     return true;
  7247.                   },
  7248.                   enumerable: true,
  7249.                   configurable: true
  7250.                 }, allowOutsideScroll: {
  7251.                   get() {
  7252.                     if (this._modifiedMenuPropOn062__) return true;
  7253.                     return allowOutsideScroll;
  7254.                   },
  7255.                   set(nv) {
  7256.                     allowOutsideScroll = nv;
  7257.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  7258.                     return true;
  7259.                   },
  7260.                   enumerable: true,
  7261.                   configurable: true
  7262.                 }
  7263.               })
  7264.             };
  7265.  
  7266.             /*
  7267.                // ***** position() to be changed. *****
  7268.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  7269.  
  7270.                   overflow: visible !important;
  7271.                   min-width: max-content !important;
  7272.                   max-width: max-content !important;
  7273.                   max-height: max-content !important;
  7274.                   min-height: max-content !important;
  7275.                   white-space: nowrap;
  7276.               }
  7277.  
  7278.             */
  7279.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  7280.  
  7281.               let m34 = 0;
  7282.               cProto.__refitByPosition__ = function () {
  7283.                 m34++;
  7284.                 if (m34 <= 0) m34 = 0;
  7285.                 if (m34 !== 1) return;
  7286.                 const hostElement = this.hostElement || this;
  7287.                 if (document.visibilityState === 'visible') {
  7288.                   const sizingTarget = this.sizingTarget;
  7289.                   if (!sizingTarget) {
  7290.                     m34 = 0;
  7291.                     return;
  7292.                   }
  7293.  
  7294.                   /*
  7295.                   let useVisibilityCollapse = true;
  7296.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  7297.                     useVisibilityCollapse = false;
  7298.                   }
  7299.  
  7300.                   if (useVisibilityCollapse) {
  7301.                     hostElement.style.visibility = 'collapse';
  7302.                     sizingTarget.style.visibility = 'collapse';
  7303.                   } else {
  7304.                     hostElement.setAttribute('rNgzQ', '');
  7305.                     sizingTarget.setAttribute('rNgzQ', '');
  7306.                   }
  7307.                   */
  7308.                   hostElement.setAttribute('rNgzQ', '');
  7309.                   sizingTarget.setAttribute('rNgzQ', '');
  7310.  
  7311.                   const gn = () => {
  7312.                     /*
  7313.                     if (useVisibilityCollapse) {
  7314.                       hostElement.style.visibility = '';
  7315.                       sizingTarget.style.visibility = '';
  7316.                     } else {
  7317.                       hostElement.removeAttribute('rNgzQ');
  7318.                       sizingTarget.removeAttribute('rNgzQ');
  7319.                     }
  7320.                     */
  7321.                     hostElement.removeAttribute('rNgzQ');
  7322.                     sizingTarget.removeAttribute('rNgzQ');
  7323.                   }
  7324.  
  7325.                   const an = async () => {
  7326.                     while (m34 >= 1) {
  7327.                       await renderReadyPn(sizingTarget);
  7328.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  7329.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  7330.                       }
  7331.                       m34--;
  7332.                     }
  7333.                     m34 = 0;
  7334.                     Promise.resolve().then(gn);
  7335.                   }
  7336.                   setTimeout(an, 4); // wait those resizing function calls
  7337.  
  7338.  
  7339.                 } else {
  7340.                   m34 = 0;
  7341.                 }
  7342.               }
  7343.               cProto.position34 = cProto.position
  7344.               cProto.position = function () {
  7345.                 if (this._positionInitialize_) {
  7346.                   this._positionInitialize_ = 0;
  7347.                   this.__refitByPosition__();
  7348.                 }
  7349.                 let r = cProto.position34.apply(this, arguments);
  7350.                 return r;
  7351.               }
  7352.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  7353.  
  7354.             } else {
  7355.  
  7356.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  7357.  
  7358.             }
  7359.  
  7360.  
  7361.  
  7362.             cProto.__openedChanged = function () {
  7363.               this._positionInitialize_ = 1;
  7364.               // this.removeAttribute('horizontal-align')
  7365.               // this.removeAttribute('vertical-align')
  7366.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  7367.                 this.__menuTypeCheck__ = true;
  7368.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  7369.                   this._modifiedMenuPropOn062__ = false;
  7370.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7371.                   // this.autoFitOnAttach = true;
  7372.                   // this.expandSizingTargetForScrollbars = true;
  7373.                   // this.allowOutsideScroll = true;
  7374.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  7375.                   this.__modifiedMenuPropsFn__();
  7376.                   // this.constrain= function(){}
  7377.                   // this.position= function(){}
  7378.  
  7379.                   // this.autoFitOnAttach = true;
  7380.                   // this.expandSizingTargetForScrollbars = true;
  7381.                   // this.allowOutsideScroll = true;
  7382.                 }
  7383.               }
  7384.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  7385.                 let newValue = null;
  7386.                 const positionTarget = this.positionTarget;
  7387.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  7388.                   if (this._modifiedMenuPropOn062__ === false) {
  7389.                     newValue = true;
  7390.                   }
  7391.                 } else if (this._modifiedMenuPropOn062__ === true) {
  7392.                   newValue = false;
  7393.                 }
  7394.                 if (newValue !== null) {
  7395.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  7396.                   this._modifiedMenuPropOn062__ = newValue;
  7397.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  7398.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  7399.                 }
  7400.               }
  7401.  
  7402.               if (this.opened) {
  7403.  
  7404.                 Promise.resolve().then(() => {
  7405.  
  7406.                   this._prepareRenderOpened();
  7407.                 }).then(() => {
  7408.                   this._manager.addOverlay(this);
  7409.                   if (this._manager._overlays.length === 1) {
  7410.                     lastOpen = this;
  7411.                     lastClose = null;
  7412.                   } else {
  7413.                     return 1;
  7414.                   }
  7415.                   // if (cid) {
  7416.                   //   clearTimeout(cid);
  7417.                   //   cid = -1;
  7418.                   //   this.__moChanged__();
  7419.                   //   cid = 0;
  7420.                   // } else {
  7421.                   //   cid = -1;
  7422.                   //   this.__moChanged__();
  7423.                   //   cid = 0;
  7424.                   // }
  7425.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7426.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7427.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7428.                   cid = cid || requestAnimationFrame(__moChanged__);
  7429.                 }).then((r) => {
  7430.  
  7431.                   if (r) this.__mtChanged__(1);
  7432.                 }).catch(console.warn);
  7433.  
  7434.               } else {
  7435.                 Promise.resolve().then(() => {
  7436.                   this._manager.removeOverlay(this);
  7437.                   if (this._manager._overlays.length === 0) {
  7438.                     lastClose = this;
  7439.                     lastOpen = null;
  7440.                   } else {
  7441.                     return 1;
  7442.                   }
  7443.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7444.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7445.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7446.                   cid = cid || requestAnimationFrame(__moChanged__);
  7447.                 }).then((r) => {
  7448.                   if (r) this.__mtChanged__(0);
  7449.                 }).catch(console.warn);
  7450.  
  7451.               }
  7452.  
  7453.             }
  7454.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  7455.  
  7456.           } else {
  7457.  
  7458.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  7459.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  7460.  
  7461.           }
  7462.  
  7463.  
  7464.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  7465.  
  7466.             cProto.__openedChanged82 = cProto.__openedChanged;
  7467.  
  7468.  
  7469.             cProto.__openedChanged = function () {
  7470.  
  7471.               // currentMenuPivotWR = null;
  7472.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  7473.  
  7474.  
  7475.  
  7476.               // if (this.opened && this.positionTarget) {
  7477.  
  7478.               //   const positionTarget = this.positionTarget;
  7479.               //   console.log(1480, '__openedChanged.B', positionTarget)
  7480.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  7481.  
  7482.               // }
  7483.  
  7484.               const positionTarget = this.positionTarget;
  7485.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  7486.               return this.__openedChanged82.apply(this, arguments);
  7487.             }
  7488.           }
  7489.  
  7490.  
  7491.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  7492.  
  7493.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  7494.  
  7495.           //   cProto.__onCaptureScroll = function(a){
  7496.  
  7497.           //     const q = true;
  7498.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  7499.  
  7500.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  7501.           //       async function af() {
  7502.           //         this.__isAnimating && this._finishRenderOpened();
  7503.           //         if (!this.opened) return;
  7504.           //         this.__restoreScrollPosition();
  7505.           //         await new Promise(r => requestAnimationFrame(r));
  7506.           //         if (!this.opened) return;
  7507.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7508.           //         if (!this.opened) return;
  7509.           //         this.__restoreScrollPosition();
  7510.           //         await new Promise(r => requestAnimationFrame(r));
  7511.           //         if (!this.opened) return;
  7512.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7513.           //         if (!this.opened) return;
  7514.           //         this.opened && !this.__isAnimating && this.refit();
  7515.           //       }
  7516.           //       Promise.resolve().then(af);
  7517.  
  7518.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  7519.           //     }else{
  7520.  
  7521.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  7522.  
  7523.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  7524.           //     }
  7525.           //   }
  7526.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  7527.           // }else{
  7528.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  7529.  
  7530.           // }
  7531.  
  7532.  
  7533.         })();
  7534.  
  7535.         console.log("[End]");
  7536.  
  7537.         console.groupEnd();
  7538.  
  7539.       }).catch(console.warn);
  7540.  
  7541.  
  7542.  
  7543.  
  7544.  
  7545.  
  7546.  
  7547.  
  7548.       /*
  7549.  
  7550.  
  7551.  
  7552.  
  7553.  
  7554.           var FU = function() {
  7555.               var a = this;
  7556.               this.nextHandle_ = 1;
  7557.               this.clients_ = {};
  7558.               this.JSC$10323_callbacks_ = {};
  7559.               this.unsubscribeAsyncHandles_ = {};
  7560.               this.subscribe = vl(function(b, c, d) {
  7561.                   var e = Geb(b);
  7562.                   if (e in a.clients_)
  7563.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  7564.                   else {
  7565.                       a: {
  7566.                           var h = Geb(b), l;
  7567.                           for (l in a.unsubscribeAsyncHandles_) {
  7568.                               var m = a.clients_[l];
  7569.                               if (m instanceof KO) {
  7570.                                   delete a.clients_[l];
  7571.                                   delete a.JSC$10323_callbacks_[l];
  7572.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  7573.                                   delete a.unsubscribeAsyncHandles_[l];
  7574.                                   i6a(m);
  7575.                                   m.objectId_ = new FQa(h);
  7576.                                   m.register();
  7577.                                   d = m;
  7578.                                   break a
  7579.                               }
  7580.                           }
  7581.                           d.objectSource = b.invalidationId.objectSource;
  7582.                           d.objectId = h;
  7583.                           if (b = b.webAuthConfigurationData)
  7584.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  7585.                               b.pageId && (d.pageId = b.pageId);
  7586.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  7587.                           d.register()
  7588.                       }
  7589.                       a.clients_[e] = d;
  7590.                       a.JSC$10323_callbacks_[e] = {}
  7591.                   }
  7592.                   d = a.nextHandle_++;
  7593.                   a.JSC$10323_callbacks_[e][d] = c;
  7594.                   return d
  7595.               })
  7596.           };
  7597.           FU.prototype.unsubscribe = function(a, b) {
  7598.               var c = Geb(a);
  7599.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  7600.               !this.JSC$10323_callbacks_[c].length)) {
  7601.                   var d = this.clients_[c];
  7602.                   b = Jq.run(function() {
  7603.                       ei(d);
  7604.                       delete this.clients_[c];
  7605.                       delete this.unsubscribeAsyncHandles_[c]
  7606.                   }
  7607.                   .bind(this));
  7608.                   this.unsubscribeAsyncHandles_[c] = b
  7609.               }
  7610.           }
  7611.           ;
  7612.  
  7613.  
  7614.       */
  7615.  
  7616.  
  7617.  
  7618.  
  7619.       const onManagerFound = (dummyManager) => {
  7620.         if (!dummyManager || typeof dummyManager !== 'object') return;
  7621.  
  7622.         const mgrProto = dummyManager.constructor.prototype;
  7623.  
  7624.         let keyCallbackStore = '';
  7625.         for (const [key, v] of Object.entries(dummyManager)) {
  7626.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  7627.         }
  7628.  
  7629.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  7630.  
  7631.         if (mgrProto.unsubscribe16) return;
  7632.  
  7633.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  7634.  
  7635.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  7636.         console.log("[Begin]");
  7637.  
  7638.  
  7639.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  7640.         const isEmptyObject = ((obj) => (firstKey(obj) === null));
  7641.  
  7642.         const idMapper = new Map();
  7643.  
  7644.         const convertId = function (objectId) {
  7645.           if (!objectId || typeof objectId !== 'string') return null;
  7646.  
  7647.           let result = idMapper.get(objectId)
  7648.           if (result) return result;
  7649.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  7650.           idMapper.set(objectId, result)
  7651.           return result;
  7652.         }
  7653.  
  7654.  
  7655.         const rafHandleHolder = [];
  7656.  
  7657.         let pzw = 0;
  7658.         let lza = 0;
  7659.         const rafHandlerFn = () => {
  7660.           pzw = 0;
  7661.           if (rafHandleHolder.length === 1) {
  7662.             const f = rafHandleHolder[0];
  7663.             rafHandleHolder.length = 0;
  7664.             f();
  7665.           } else if (rafHandleHolder.length > 1) {
  7666.             const arr = rafHandleHolder.slice(0);
  7667.             rafHandleHolder.length = 0;
  7668.             for (const fn of arr) fn();
  7669.           }
  7670.         };
  7671.  
  7672.  
  7673.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  7674.  
  7675.           const checkIntegrityForSubscribe = (mgr) => {
  7676.             if (mgr
  7677.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  7678.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  7679.  
  7680.               const ns = new Set(Object.keys(mgr));
  7681.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  7682.  
  7683.               if (ns.size >= 6 && ms.size >= 4) {
  7684.                 // including 'subscribe18'
  7685.                 // 'unsubscribe16', 'subscribe19'
  7686.  
  7687.                 let r = 0;
  7688.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  7689.                   r += ns.has(k) ? 1 : 0;
  7690.                 }
  7691.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  7692.                   r += ms.has(k) ? 1 : 0;
  7693.                 }
  7694.                 if (r === 10) {
  7695.                   const isObject = (c) => (c || 0).constructor === Object;
  7696.  
  7697.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  7698.  
  7699.                     return true;
  7700.                   }
  7701.  
  7702.  
  7703.                 }
  7704.  
  7705.               }
  7706.  
  7707.  
  7708.             }
  7709.             return false;
  7710.           }
  7711.  
  7712.           mgrProto.subscribe19 = function (o, f, opts) {
  7713.  
  7714.             const ct_clients_ = this.clients_ || 0;
  7715.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  7716.  
  7717.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  7718.  
  7719.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7720.             if (!objectId) return this.subscribe18.apply(this, arguments);
  7721.             objectId = convertId(objectId);
  7722.  
  7723.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  7724.  
  7725.             if (ct_clients_[objectId]) {
  7726.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  7727.             }
  7728.  
  7729.             return this.subscribe18.apply(this, arguments);
  7730.           }
  7731.  
  7732.           mgrProto.unsubscribe = function (o, d) {
  7733.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  7734.               this.subscribe18 = this.subscribe;
  7735.               this.subscribe = this.subscribe19;
  7736.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  7737.             }
  7738.             const ct_clients_ = this.clients_;
  7739.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  7740.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  7741.  
  7742.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7743.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  7744.  
  7745.             objectId = convertId(objectId);
  7746.  
  7747.  
  7748.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  7749.  
  7750.             const callbacks = this[keyCallbackStore] || 0;
  7751.             const callbackObj = callbacks[objectId] || 0;
  7752.  
  7753.  
  7754.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  7755.               const w = ct_clients_[objectId];
  7756.               --lza;
  7757.               if (lza < -1e9) lza = -1;
  7758.               const qta = lza;
  7759.               rafHandleHolder.push(() => {
  7760.                 if (qta === ct_handles_[objectId]) {
  7761.                   const o = {
  7762.                     callbacks, callbackObj,
  7763.                     client: ct_clients_[objectId],
  7764.                     handle: ct_handles_[objectId]
  7765.                   };
  7766.                   let p = 0;
  7767.                   try {
  7768.                     if (ct_clients_[objectId] === w) {
  7769.                       w && "function" === typeof w.dispose && w.dispose();
  7770.                       delete ct_clients_[objectId];
  7771.                       delete ct_handles_[objectId];
  7772.                       p = 1;
  7773.                     } else {
  7774.                       // w && "function" === typeof w.dispose && w.dispose();
  7775.                       // delete ct_clients_[objectId];
  7776.                       // delete ct_handles_[objectId];
  7777.                       p = 2;
  7778.                     }
  7779.                   } catch (e) {
  7780.                     console.warn(e);
  7781.                   }
  7782.                   console.log(`unsubscribed: ${p}`, this, o);
  7783.                 }
  7784.               });
  7785.               ct_handles_[objectId] = qta;
  7786.               if (pzw === 0) {
  7787.                 pzw = requestAnimationFrame(rafHandlerFn);
  7788.               }
  7789.             }
  7790.           }
  7791.  
  7792.  
  7793.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  7794.  
  7795.         } else {
  7796.  
  7797.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  7798.         }
  7799.  
  7800.         console.log("[End]");
  7801.  
  7802.         console.groupEnd();
  7803.  
  7804.       }
  7805.  
  7806.  
  7807.  
  7808.       /*
  7809.  
  7810.  
  7811.               a.prototype.async = function(e, h) {
  7812.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  7813.               }
  7814.               ;
  7815.               a.prototype.cancelAsync = function(e) {
  7816.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  7817.               }
  7818.  
  7819.       */
  7820.  
  7821.  
  7822.  
  7823.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  7824.  
  7825.         let __dummyManager__ = null;
  7826.  
  7827.         mightFirstCheckOnYtInit();
  7828.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  7829.         console.log("[Begin]");
  7830.         (() => {
  7831.  
  7832.           const tag = "yt-invalidation-continuation"
  7833.           const dummy = document.createElement(tag);
  7834.  
  7835.           const cProto = getProto(dummy);
  7836.           if (!cProto || !cProto.attached) {
  7837.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7838.             return;
  7839.           }
  7840.  
  7841.           const dummyManager = (dummy.inst || dummy).manager_ || 0;
  7842.           __dummyManager__ = dummyManager;
  7843.  
  7844.           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) {
  7845.  
  7846.  
  7847.             const rafHub = new RAFHub();
  7848.  
  7849.             rafHub.keepRAF = true;
  7850.             cProto.async71 = cProto.async;
  7851.             cProto.cancelAsync71 = cProto.cancelAsync;
  7852.  
  7853.             // mostly for subscription timeoutMs 10000ms
  7854.             let mcw = 1; // 1, 3, 5, ...
  7855.             let arr = new Map();
  7856.  
  7857.             let __asyncInited__ = 0;
  7858.             let __timeoutStartId__ = null;
  7859.             const __asyncInit__ = () => {
  7860.  
  7861.               if (__asyncInited__) return;
  7862.               __asyncInited__ = 1;
  7863.  
  7864.               __timeoutStartId__ = setTimeout(() => { });
  7865.               mcw = __timeoutStartId__ * 2 + 1;
  7866.  
  7867.               setInterval(() => {
  7868.  
  7869.                 if (!arr.length) return;
  7870.  
  7871.                 const p = Date.now();
  7872.                 let deleteKeys = [];
  7873.                 arr.forEach((entry, key) => {
  7874.  
  7875.  
  7876.                   if (entry.cid === -1) {
  7877.                     entry.cid = -2;
  7878.                   } else if (entry.cid === -2) {
  7879.  
  7880.                     let offset = p - entry.add
  7881.                     if (offset < 0) offset = 0;
  7882.                     let delay2 = entry.delay - offset;
  7883.                     if (delay2 < 0) delay2 = 0;
  7884.                     entry.cid = setTimeout(entry.q(), delay2);
  7885.                     entry.q = null;
  7886.  
  7887.                   } else if (entry.add + entry.delay < p) {
  7888.                     deleteKeys.push(key);
  7889.  
  7890.                   }
  7891.  
  7892.                 })
  7893.  
  7894.                 for (const key of deleteKeys) arr.delete(key);
  7895.  
  7896.               }, 2000)
  7897.  
  7898.             }
  7899.  
  7900.  
  7901.  
  7902.  
  7903.             cProto.async = function (e, h) {
  7904.  
  7905.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  7906.  
  7907.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  7908.  
  7909.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  7910.  
  7911.  
  7912.               if (!this.__asyncInited__) {
  7913.                 this.__asyncInited__ = 1;
  7914.                 __asyncInit__();
  7915.               }
  7916.               mcw += 2; // 2K+3, 2K+4, ...
  7917.               if (mcw > 1e9) mcw = mcw % 1e4;
  7918.               const cid = mcw;
  7919.               const q = () => {
  7920.                 return () => {
  7921.                   console.log('async h > 8000');
  7922.                   e.call(this);
  7923.                 }
  7924.               }
  7925.               // setTimeout(q, delay)
  7926.               arr.set(cid, {
  7927.                 cid: -1, // -1 -> -2 -> cid
  7928.                 add: Date.now(),
  7929.                 q,
  7930.                 delay: h
  7931.               });
  7932.               // console.log('cid-async', cid)
  7933.               return cid;
  7934.  
  7935.             }
  7936.  
  7937.  
  7938.             cProto.cancelAsync = function (e) {
  7939.  
  7940.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  7941.  
  7942.               // console.log('cid-unasync', e)
  7943.  
  7944.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  7945.  
  7946.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  7947.  
  7948.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  7949.  
  7950.                 if (!arr.has(e)) return; // duplciated cancel
  7951.  
  7952.                 const entry = arr.get(e);
  7953.                 if (entry.cid < 0) {
  7954.                   entry.cid = 0;
  7955.                   arr.delete(e);
  7956.                 } else {
  7957.                   clearTimeout(entry.cid); // cid >= 1
  7958.                   entry.cid = 0;
  7959.                   arr.delete(e);
  7960.                 }
  7961.  
  7962.               } else {
  7963.  
  7964.                 return this.cancelAsync71(e);
  7965.  
  7966.               }
  7967.  
  7968.             }
  7969.  
  7970.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  7971.  
  7972.           } else {
  7973.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  7974.  
  7975.           }
  7976.  
  7977.         })();
  7978.  
  7979.         console.log("[End]");
  7980.  
  7981.         console.groupEnd();
  7982.  
  7983.  
  7984.  
  7985.         onManagerFound(__dummyManager__);
  7986.  
  7987.       }).catch(console.warn);
  7988.  
  7989.  
  7990.  
  7991.  
  7992.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  7993.  
  7994.  
  7995.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  7996.  
  7997.  
  7998.           mightFirstCheckOnYtInit();
  7999.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  8000.           console.log("[Begin]");
  8001.           (() => {
  8002.  
  8003.             const tag = "yt-live-interactivity-component-background"
  8004.             const dummy = document.createElement(tag);
  8005.  
  8006.             const cProto = getProto(dummy);
  8007.             if (!cProto || !cProto.attached) {
  8008.               console.warn(`proto.attached for ${tag} is unavailable.`);
  8009.               return;
  8010.             }
  8011.  
  8012.  
  8013.             cProto.__toStopAfterRun__ = function (hostElement) {
  8014.               let mo = new MutationObserver(() => {
  8015.                 mo.disconnect();
  8016.                 mo.takeRecords();
  8017.                 mo = null;
  8018.                 this.lottieAnimation && this.lottieAnimation.stop(); // primary
  8019.                 foregroundPromiseFn().then(() => { // if the lottieAnimation is started with rAf triggering
  8020.                   this.lottieAnimation && this.lottieAnimation.stop(); // fallback
  8021.                 });
  8022.               });
  8023.               mo.observe(hostElement, { subtree: true, childList: true });
  8024.             }
  8025.  
  8026.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  8027.  
  8028.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  8029.               cProto.maybeLoadAnimationBackground = function () {
  8030.                 let toRun = true;
  8031.                 let stopAfterRun = false;
  8032.                 if (!this.__bypassDisableAnimationBackground__) {
  8033.                   let doFix = false;
  8034.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  8035.                     if (!this.lottieAnimation) {
  8036.                       doFix = true;
  8037.                     }
  8038.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  8039.                     doFix = true;
  8040.                   }
  8041.                   if (doFix) {
  8042.                     if (this.useAnimationBackground === true) {
  8043.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  8044.                     }
  8045.                     toRun = true;
  8046.                     stopAfterRun = true;
  8047.                   }
  8048.                 }
  8049.                 if (toRun) {
  8050.                   if (stopAfterRun && (this.hostElement instanceof HTMLElement)) {
  8051.                     this.__toStopAfterRun__(this.hostElement); // primary
  8052.                   }
  8053.                   const r = this.maybeLoadAnimationBackground77.apply(this, arguments);
  8054.                   if (stopAfterRun && this.lottieAnimation) {
  8055.                     this.lottieAnimation.stop(); // fallback if no mutation
  8056.                   }
  8057.                   return r;
  8058.                 }
  8059.               }
  8060.  
  8061.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  8062.  
  8063.             } else {
  8064.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  8065.  
  8066.             }
  8067.  
  8068.           })();
  8069.  
  8070.           console.log("[End]");
  8071.  
  8072.           console.groupEnd();
  8073.  
  8074.  
  8075.         }).catch(console.warn);
  8076.  
  8077.       }
  8078.  
  8079.  
  8080.     }
  8081.  
  8082.  
  8083.  
  8084.  
  8085.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  8086.  
  8087.     const fixJsonParse = () => {
  8088.  
  8089.       let p1 = window.onerror;
  8090.  
  8091.       try {
  8092.         JSON.parse("{}");
  8093.       } catch (e) {
  8094.         console.warn(e);
  8095.       }
  8096.  
  8097.       let p2 = window.onerror;
  8098.  
  8099.       if (p1 !== p2) {
  8100.  
  8101.  
  8102.         console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | JS Engine Issue Found"}`,
  8103.           "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  8104.           "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  8105.         );
  8106.  
  8107.         console.warn("\nJSON.parse is hacked (e.g. Brave's script injection) which causes window.onerror changes on every JSON.parse call.\nPlease install https://greasyfork.org/scripts/473972-youtube-js-engine-tamer to fix the issue.\n");
  8108.  
  8109.         console.groupEnd();
  8110.  
  8111.       }
  8112.  
  8113.     }
  8114.  
  8115.     if (CHECK_JSONPRUNE) {
  8116.       promiseForCustomYtElementsReady.then(fixJsonParse);
  8117.     }
  8118.  
  8119.   });
  8120.  
  8121.  
  8122.  
  8123. })({ IntersectionObserver });