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YouTube 超快聊天

YouTube直播聊天的终极性能提升

当前为 2024-06-21 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.62.2
  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://raw.githubusercontent.com/cyfung1031/userscript-supports/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://update.greasyfork.org/scripts/475632/1361351/ytConfigHacks.js
  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 ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  50.  
  51.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  52.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  53.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  54.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  55.  
  56.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  57.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  58.  
  59.   // Replace requestAnimationFrame timers with custom implementation
  60.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  61.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  62.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  63.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  64.  
  65.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  66.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  67.  
  68.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  69.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  70.  
  71.   // Data Manipulation for Participants (Participant List)
  72.   // << if DO_PARTICIPANT_LIST_HACKS >>
  73.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  74.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  75.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  76.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  77.   // << end >>
  78.  
  79.   // show more button
  80.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  81.  
  82.   // faster stampDomArray_ for participants list creation
  83.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  84.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  85.  
  86.   // reuse yt components
  87.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  88.  
  89.   // ShadyDom Free is buggy
  90.   const DISABLE_FLAGS_SHADYDOM_FREE = true;
  91.  
  92.   // images <Group#I01>
  93.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  94.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  95.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  96.  
  97.   const DO_LINK_PREFETCH = true;                      // DO NOT CHANGE
  98.   // << if DO_LINK_PREFETCH >>
  99.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  100.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  101.   const SKIP_PRELOAD_EMOJI = true;
  102.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  103.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  104.   // << end >>
  105.  
  106.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  107.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  108.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  109.  
  110.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  111.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  112.  
  113.   const ATTEMPT_ANIMATED_TICKER_BACKGROUND = 'steps'   // false OR '' for disabled, 'linear', 'steps' for easing-function
  114.   // << if ATTEMPT_ANIMATED_TICKER_BACKGROUND >>
  115.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  116.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  117.   // [limiting 500 max steps] is recommended for "confortable visual change"
  118.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  119.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  120.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  121.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  122.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  123.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  124.   // << end >>
  125.  
  126.   const FIX_TOOLTIP_DISPLAY = true;                       // changed in 2024.05.02
  127.   const USE_VANILLA_DEREF = true;
  128.   const FIX_DROPDOWN_DERAF = true;                        // DONT CHANGE
  129.  
  130.  
  131.   const CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true;                // cache the menu data and used for the next reopen
  132.   const ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU = false;   // pause auto scroll faster when the context menu is about to show
  133.   const ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU = true;                // avoid multiple requests on the same time
  134.  
  135.   const BOOST_MENU_OPENCHANGED_RENDERING = true;
  136.   const FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK = true;  // click again = close
  137.   const NO_ITEM_TAP_FOR_NON_STATIONARY_TAP = true;                // dont open the menu (e.g. text message) if cursor is moved or long press
  138.   const TAP_ACTION_DURATION = 280;                                // exceeding 280ms would not consider as a tap action
  139.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true;             // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  140.   // const FIX_MENU_CAPTURE_SCROLL = true;
  141.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;                      // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  142.  
  143.   const RAF_FIX_keepScrollClamped = true;
  144.   const RAF_FIX_scrollIncrementally = 2;                          // 0: no action; 1: basic fix; 2: also fix scroll position
  145.  
  146.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  147.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  148.  
  149.   const CHECK_JSONPRUNE = true;                        // This is a bug in Brave
  150.   // << end >>
  151.  
  152.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  153.  
  154.   const CHANGE_DATA_FLUSH_ASYNC = false;
  155.   // CHANGE_DATA_FLUSH_ASYNC is disabled due to bug report: https://greasyfork.org/scripts/469878-youtube-super-fast-chat/discussions/199479
  156.   // to be further investigated
  157.  
  158.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  159.  
  160.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  161.   // 0 = default Yt animation background [= no fix];
  162.   // 1 = disable default animation background [= keep special animation];
  163.   // 2 = disable all animation backgrounds [= no animation backbround]
  164.  
  165.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  166.  
  167.   const MAX_TOOLTIP_NO_WRAP_WIDTH = '72vw'; // '' for disable; accept values like '60px', '25vw'
  168.  
  169.   const AMEND_TICKER_handleLiveChatAction = false; // to fix ticker duplication and unresponsively fast ticker generation
  170.   // AMEND_TICKER_handleLiveChatAction to be fixed (2024.05.21)
  171.  
  172.   const ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION = true;
  173.   const ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME = true;
  174.   const FIX_BATCH_TICKER_ORDER = true;
  175.  
  176.   const DISABLE_Translation_By_Google = true;
  177.  
  178.   const FASTER_ICON_RENDERING = true;
  179.  
  180.   const DELAY_FOCUSEDCHANGED = true;
  181.  
  182.   const skipErrorForhandleAddChatItemAction_ = true; // currently depends on ENABLE_NO_SMOOTH_TRANSFORM
  183.   const fixChildrenIssue801 = true; // if __children801__ is set [fix polymer controller method extration for `.set()`]
  184.  
  185.   const SUPPRESS_refreshOffsetContainerHeight_ = true; // added in FEB 2024; true for default layout options
  186.  
  187.   const NO_FILTER_DROPDOWN_BORDER = true; // added in 2024.03.02
  188.  
  189.   const FIX_ANIMATION_TICKER_TEXT_POSITION = true; // CSS fix; experimental; added in 2024.04.07
  190.   const FIX_AUTHOR_CHIP_BADGE_POSITION = true;
  191.  
  192.   const FIX_ToggleRenderPolymerControllerExtractionBug = false; // to be reviewed
  193.  
  194.   const REACTION_ANIMATION_PANEL_CSS_FIX = true;
  195.  
  196.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  197.   /*
  198.  
  199.     ### Time Approach
  200.  
  201.     // all below values can make the time interval > 250ms
  202.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  203.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  204.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  205.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  206.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  207.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  208.  
  209.     ### Pixel Check
  210.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  211.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  212.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  213.  
  214.     ### Example - totalDuration = 280000
  215.     totalDuration 280000
  216.     stepInterval 0.5
  217.     numOfSteps = Math.round(100 / stepInterval) = 200
  218.     time interval = 280000 / 200 = 1400ms <acceptable>
  219.  
  220.     ### Example - totalDuration = 18000
  221.     totalDuration 18000
  222.     stepInterval 5
  223.     numOfSteps = Math.round(100 / stepInterval) = 20
  224.     time interval = 18000 / 20 = 900ms <acceptable>
  225.  
  226.     ### Example - totalDuration = 5000
  227.     totalDuration 5000
  228.     stepInterval 5
  229.     numOfSteps = Math.round(100 / stepInterval) = 20
  230.     time interval = 5000 / 20 = 250ms <threshold value>
  231.  
  232.     ### Example - totalDuration = 3600
  233.     totalDuration 3600
  234.     stepInterval 5
  235.     numOfSteps = Math.round(100 / stepInterval) = 20
  236.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  237.  
  238.   */
  239.  
  240.   // =======================================================================================================
  241.  
  242.   // AUTOMAICALLY DETERMINED
  243.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  244.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  245.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  246.   let runTickerClassName = 'run-ticker';
  247.  
  248.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  249.   /*
  250.     WebP: data:image/webp;base64,UklGRjAB
  251.     PNG: data:image/png;base64,iVBORw0KGg==
  252.     JPEG: data:image/jpeg;base64,/9j/4AA=
  253.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  254.     BMP: data:image/bmp;base64,Qk1oAAAA
  255.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  256.  
  257.     WebP: data:image/webp;base64,AAAAAAA=
  258.     PNG:  data:image/png;base64,AAAAAAA=
  259.     JPEG: data:image/jpeg;base64,AAAAAAA=
  260.     GIF:  data:image/gif;base64,AAAAAAA=
  261.     BMP:  data:image/bmp;base64,AAAAAAA=
  262.  
  263.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  264.  
  265.  
  266.   */
  267.  
  268.   // image sizing code
  269.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  270.  
  271.  
  272.   //   function KC(a, b, c, d) {
  273.   //     d = void 0 === d ? "width" : d;
  274.   //     if (!a || !a.length)
  275.   //         return null;
  276.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  277.   //         var e = window.devicePixelRatio;
  278.   //         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"));
  279.   //         HC = e
  280.   //     } else
  281.   //         HC || (HC = window.devicePixelRatio);
  282.   //     e = HC;
  283.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  284.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  285.   //         return a[0].url || null;
  286.   //     e = a.length;
  287.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  288.   //         return a[e - 1].url || null;
  289.   //     if (c)
  290.   //         for (var h = 0; h < e; h++)
  291.   //             if (0 <= a[h].url.indexOf(c))
  292.   //                 return a[h].url || null;
  293.   //     for (c = 0; c < e; c++)
  294.   //         if (a[c][d] >= b)
  295.   //             return a[c].url || null;
  296.   //     for (b = e - 1; 0 < b; b--)
  297.   //         if (a[b][d])
  298.   //             return a[b].url || null;
  299.   //     return a[0].url || null
  300.   // }
  301.  
  302.   const { IntersectionObserver } = __CONTEXT__;
  303.   let _x69;
  304.   try {
  305.     _x69 = document.createAttributeNS("http://www.w3.org/2000/svg", "nil").addEventListener;
  306.   } catch (e) { }
  307.   const pureAddEventListener = _x69;
  308.   if (!pureAddEventListener) return console.warn("pureAddEventListener cannot be obtained.");
  309.  
  310.   /** @type {globalThis.PromiseConstructor} */
  311.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  312.  
  313.   // let jsonParseFix = null;
  314.  
  315.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  316.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  317.  
  318.   // necessity of cssText3_smooth_transform_position to be checked.
  319.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  320.  
  321.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  322.         position: static !important;
  323.     }
  324.  
  325.   `: '';
  326.  
  327.   // fallback if dummy style fn fails
  328.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  329.  
  330.     /* optional */
  331.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  332.         height: auto !important;
  333.         min-height: unset !important;
  334.     }
  335.  
  336.     #items.style-scope.yt-live-chat-item-list-renderer {
  337.         transform: translateY(0px) !important;
  338.     }
  339.  
  340.     /* optional */
  341.  
  342.   `: '';
  343.  
  344.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  345.  
  346.     /* ------------------------------------------------------------------------------------------------------------- */
  347.  
  348.     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 {
  349.         contain: layout style;
  350.     }
  351.  
  352.     #items.style-scope.yt-live-chat-item-list-renderer {
  353.         contain: layout paint style;
  354.     }
  355.  
  356.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  357.         contain: style;
  358.     }
  359.  
  360.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  361.         contain: size style;
  362.     }
  363.  
  364.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  365.         contain: size layout paint style;
  366.     }
  367.  
  368.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  369.         contain: layout paint style;
  370.     }
  371.  
  372.     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 {
  373.         contain: layout style;
  374.     }
  375.  
  376.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  377.         contain: layout paint style;
  378.     }
  379.  
  380.     /* ------------------------------------------------------------------------------------------------------------- */
  381.  
  382.   ` : '';
  383.  
  384.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  385.  
  386.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  387.         top: 4px;
  388.         transition-property: top;
  389.         bottom: unset;
  390.     }
  391.  
  392.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  393.         top: -42px;
  394.     }
  395.  
  396.   `: '';
  397.  
  398.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  399.  
  400.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  401.         contain: layout style;
  402.     }
  403.  
  404.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  405.         overflow: visible;
  406.     }
  407.  
  408.   `: '';
  409.  
  410.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  411.  
  412.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  413.         --yt-live-chat-action-panel-top-border: none;
  414.     }
  415.  
  416.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  417.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  418.     }
  419.  
  420.     html #panel-pages.yt-live-chat-renderer {
  421.         border-top: 0;
  422.         border-bottom: 0;
  423.     }
  424.  
  425.   `: '';
  426.  
  427.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  428.  
  429.     img,
  430.     yt-img-shadow[height][width],
  431.     yt-img-shadow {
  432.         content-visibility: visible !important;
  433.     }
  434.  
  435.   `  : '';
  436.  
  437.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  438.  
  439.     /* remove YouTube constant will-change */
  440.     /* constant value will slow down the performance; default auto */
  441.  
  442.     /* www-player.css */
  443.     html .ytp-contextmenu,
  444.     html .ytp-settings-menu {
  445.         will-change: unset;
  446.     }
  447.  
  448.     /* frequently matched elements */
  449.     html .fill.yt-interaction,
  450.     html .stroke.yt-interaction,
  451.     html .yt-spec-touch-feedback-shape__fill,
  452.     html .yt-spec-touch-feedback-shape__stroke {
  453.         will-change: unset;
  454.     }
  455.  
  456.     /* live_chat_polymer.js */
  457.     /*
  458.     html .toggle-button.tp-yt-paper-toggle-button,
  459.     html #primaryProgress.tp-yt-paper-progress,
  460.     html #secondaryProgress.tp-yt-paper-progress,
  461.     html #onRadio.tp-yt-paper-radio-button,
  462.     html .fill.yt-interaction,
  463.     html .stroke.yt-interaction,
  464.     html .yt-spec-touch-feedback-shape__fill,
  465.     html .yt-spec-touch-feedback-shape__stroke {
  466.         will-change: unset;
  467.     }
  468.     */
  469.  
  470.     /* desktop_polymer_enable_wil_icons.js */
  471.     /* html .fill.yt-interaction,
  472.     html .stroke.yt-interaction, */
  473.     html tp-yt-app-header::before,
  474.     html tp-yt-iron-list,
  475.     html #items.tp-yt-iron-list > *,
  476.     html #onRadio.tp-yt-paper-radio-button,
  477.     html .toggle-button.tp-yt-paper-toggle-button,
  478.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  479.     html #items.ytd-post-multi-image-renderer,
  480.     html #items.ytd-horizontal-card-list-renderer,
  481.     html #items.yt-horizontal-list-renderer,
  482.     html #left-arrow.yt-horizontal-list-renderer,
  483.     html #right-arrow.yt-horizontal-list-renderer,
  484.     html #items.ytd-video-description-infocards-section-renderer,
  485.     html #items.ytd-video-description-music-section-renderer,
  486.     html #chips.ytd-feed-filter-chip-bar-renderer,
  487.     html #chips.yt-chip-cloud-renderer,
  488.     html #items.ytd-merch-shelf-renderer,
  489.     html #items.ytd-product-details-image-carousel-renderer,
  490.     html ytd-video-preview,
  491.     html #player-container.ytd-video-preview,
  492.     html #primaryProgress.tp-yt-paper-progress,
  493.     html #secondaryProgress.tp-yt-paper-progress,
  494.     html ytd-miniplayer[enabled] /* ,
  495.     html .yt-spec-touch-feedback-shape__fill,
  496.     html .yt-spec-touch-feedback-shape__stroke */ {
  497.         will-change: unset;
  498.     }
  499.  
  500.     /* other */
  501.     .ytp-videowall-still-info-content[class],
  502.     .ytp-suggestion-image[class] {
  503.         will-change: unset !important;
  504.     }
  505.  
  506.   ` : '';
  507.  
  508.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  509.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  510.  
  511.     elzm-fonts {
  512.         visibility: collapse;
  513.         position: fixed;
  514.         top: -10px;
  515.         left: -10px;
  516.         font-size: 10pt;
  517.         line-height: 100%;
  518.         width: 100px;
  519.         height: 100px;
  520.         transform: scale(0.1);
  521.         transform: scale(0.01);
  522.         transform: scale(0.001);
  523.         transform-origin: 0 0;
  524.         contain: strict;
  525.         display: block;
  526.  
  527.         pointer-events: none !important;
  528.         user-select: none !important;
  529.     }
  530.  
  531.     elzm-fonts[id]#elzm-fonts-yk75g {
  532.         user-select: none !important;
  533.         pointer-events: none !important;
  534.     }
  535.  
  536.     elzm-font {
  537.         visibility: collapse;
  538.         position: absolute;
  539.         line-height: 100%;
  540.         width: 100px;
  541.         height: 100px;
  542.         contain: strict;
  543.         display: block;
  544.  
  545.         user-select: none !important;
  546.         pointer-events: none !important;
  547.     }
  548.  
  549.     elzm-font::before {
  550.         visibility: collapse;
  551.         position: absolute;
  552.         line-height: 100%;
  553.         width: 100px;
  554.         height: 100px;
  555.         contain: strict;
  556.         display: block;
  557.  
  558.         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';
  559.  
  560.         user-select: none !important;
  561.         pointer-events: none !important;
  562.     }
  563.  
  564.   `: '';
  565.  
  566.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  567.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  568.         -webkit-backdrop-filter: none;
  569.         backdrop-filter: none;
  570.     }
  571.   `: '';
  572.  
  573.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  574.  
  575.     @keyframes blinker-miuzp {
  576.         0%, 60%, 100% {
  577.             opacity: 1;
  578.         }
  579.         30% {
  580.             opacity: 0.6;
  581.         }
  582.     }
  583.  
  584.     yt-icon-button#show-more.has-new-messages-miuzp {
  585.         animation: blinker-miuzp 1.74s linear infinite;
  586.     }
  587.  
  588.   `: '';
  589.  
  590.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  591.  
  592.     yt-live-chat-paid-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  593.       pointer-events: none !important;
  594.     }
  595.  
  596.     yt-live-chat-membership-item-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  597.       pointer-events: none !important;
  598.     }
  599.  
  600.     yt-live-chat-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  601.       pointer-events: none !important;
  602.     }
  603.  
  604.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  605.       pointer-events: none !important; /* TO_BE_REVIEWED */
  606.     }
  607.  
  608.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  609.       pointer-events: none !important;
  610.     }
  611.  
  612.   `: '';
  613.  
  614.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  615.  
  616.  
  617.     tp-yt-paper-tooltip[role="tooltip"] {
  618.       box-sizing: content-box !important;
  619.       margin: 0px !important;
  620.       padding: 0px !important;
  621.       contain: none !important;
  622.     }
  623.  
  624.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  625.       box-sizing: content-box !important;
  626.       display: inline-block;
  627.       contain: none !important;
  628.     }
  629.  
  630.  
  631.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  632.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  633.       width: max-content;
  634.       text-overflow: ellipsis;
  635.       overflow: hidden;
  636.       white-space: nowrap;
  637.     }
  638.  
  639.  
  640.   `: '';
  641.  
  642.  
  643.   const cssText13_no_text_select_when_menu_visible = `
  644.     [menu-visible] {
  645.       --sfc47-text-select: none;
  646.     }
  647.     [menu-visible] #header[id][class],
  648.     [menu-visible] #content[id][class],
  649.     [menu-visible] #header[id][class] *,
  650.     [menu-visible] #content[id][class] * {
  651.       user-select: var(--sfc47-text-select) !important;
  652.     }
  653.     [menu-visible] #menu {
  654.       --sfc47-text-select: inherit;
  655.     }
  656.   `;
  657.  
  658.   const cssText14_NO_FILTER_DROPDOWN_BORDER = NO_FILTER_DROPDOWN_BORDER ? `
  659.   yt-live-chat-header-renderer.yt-live-chat-renderer #label.yt-dropdown-menu::before {
  660.     border:0;
  661.   }
  662.   ` : '';
  663.  
  664.   const cssText15_FIX_ANIMATION_TICKER_TEXT_POSITION = FIX_ANIMATION_TICKER_TEXT_POSITION ? `
  665.     .style-scope.yt-live-chat-ticker-renderer #animation-container[id][class] {
  666.       position: relative;
  667.       display: grid;
  668.       grid-auto-columns: 1fr;
  669.       grid-auto-rows: 1fr;
  670.       grid-template-columns: repeat(1, 1fr);
  671.       gap: 7px;
  672.       padding-bottom: 0;
  673.       margin-bottom: 0;
  674.       padding-top: 0;
  675.       align-self: flex-start;
  676.       flex-wrap: nowrap;
  677.       margin-top: 1px;
  678.   }
  679.  
  680.   .style-scope.yt-live-chat-ticker-renderer #animation-container > [id][class] {
  681.       margin-top: 0px;
  682.       margin-bottom: 0px;
  683.       flex-direction: row;
  684.       flex-wrap: nowrap;
  685.       align-items: center;
  686.       justify-content: flex-start;
  687.   }
  688.  
  689.   .style-scope.yt-live-chat-ticker-renderer #animation-container > [id][class]:first-child::after {
  690.       content: '補';
  691.       visibility: collapse;
  692.       display: inline-block;
  693.       position: relative;
  694.       width: 0;
  695.       line-height: 22px;
  696.   }
  697.  
  698.   ` : '';
  699.  
  700.   const cssText16_FIX_AUTHOR_CHIP_BADGE_POSITION = FIX_AUTHOR_CHIP_BADGE_POSITION ? `
  701.     #card  #author-name-chip > yt-live-chat-author-chip[single-line] {
  702.         flex-wrap: nowrap;
  703.         white-space: nowrap;
  704.         display: inline-flex;
  705.         flex-direction: row;
  706.         text-wrap: nowrap;
  707.         flex-shrink: 0;
  708.         align-items: center;
  709.     }
  710.  
  711.     #card  #author-name-chip {
  712.         display: inline-flex;
  713.         flex-direction: row;
  714.         align-items: flex-start;
  715.     }
  716.   `: '';
  717.  
  718.  
  719.   // Example: https://www.youtube.com/watch?v=Xfytz-igsuc
  720.   const cssText17_FIX_overwidth_banner_message = `
  721.     yt-live-chat-banner-manager#live-chat-banner.style-scope.yt-live-chat-item-list-renderer {
  722.       max-width: 100%;
  723.       box-sizing: border-box;
  724.     }
  725.   `;
  726.  
  727.  
  728.   const cssText18_REACTION_ANIMATION_PANEL_CSS_FIX = REACTION_ANIMATION_PANEL_CSS_FIX ? `
  729.     #reaction-control-panel-overlay[class] {
  730.       contain: strict;
  731.       margin: 0;
  732.       padding: 0;
  733.       border: 0;
  734.       box-sizing: border-box;
  735.       will-change: initial;
  736.     }
  737.     #reaction-control-panel-overlay[class] *[class] {
  738.       will-change: initial;
  739.     }
  740.   `: ''
  741.  
  742.   const addCss = () => `
  743.  
  744.     @property --ticker-rtime {
  745.       syntax: "<percentage>";
  746.       inherits: false;
  747.       initial-value: 0%;
  748.     }
  749.  
  750.     /*
  751.     .run-ticker {
  752.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  753.     }
  754.  
  755.     .run-ticker-test {
  756.       background: #00000001;
  757.     }
  758.  
  759.     .run-ticker-forced,
  760.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  761.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  762.     {
  763.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  764.     }
  765.     */
  766.  
  767.     .run-ticker {
  768.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  769.     }
  770.  
  771.     .run-ticker,
  772.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  773.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  774.     {
  775.       background: var(--ticker-bg) !important;
  776.     }
  777.  
  778.     yt-live-chat-ticker-dummy777-item-renderer {
  779.       background: #00000001;
  780.     }
  781.  
  782.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  783.       position: fixed !important;
  784.       top: -1000px !important;
  785.       left: -1000px !important;
  786.       font-size: 1px !important;
  787.       color: transparent !important;
  788.       pointer-events: none !important;
  789.       z-index: -1 !important;
  790.       contain: strict !important;
  791.       box-sizing: border-box !important;
  792.       pointer-events: none !important;
  793.       user-select: none !important;
  794.       max-width: 1px !important;
  795.       max-height: 1px !important;
  796.       overflow: hidden !important;
  797.       visibility: collapse !important;
  798.       display: none !important;
  799.     }
  800.  
  801.     yt-live-chat-ticker-dummy777-item-renderer #container {
  802.       background: inherit;
  803.     }
  804.  
  805.  
  806.     ${cssText8_fonts_pre_render}
  807.  
  808.     ${cssText9_no_backdrop_filter_when_menu_shown}
  809.  
  810.     @supports (contain: layout paint style) {
  811.  
  812.       ${cssText5}
  813.  
  814.     }
  815.  
  816.     @supports (color: var(--general)) {
  817.  
  818.       html {
  819.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  820.       }
  821.  
  822.       ${cssText3_smooth_transform_position}
  823.  
  824.       ${cssText7c_will_change_unset}
  825.  
  826.       ${cssText7b_content_visibility_unset}
  827.  
  828.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  829.           overflow-y: scroll;
  830.           padding-right: 0;
  831.       }
  832.  
  833.       ${cssText4_smooth_transform_forced_props}
  834.  
  835.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  836.           pointer-events: none !important;
  837.       }
  838.  
  839.       #continuations, #continuations * {
  840.           contain: strict;
  841.           position: fixed;
  842.           top: 2px;
  843.           height: 1px;
  844.           width: 2px;
  845.           height: 1px;
  846.           visibility: collapse;
  847.       }
  848.  
  849.       ${cssText6b_show_more_button}
  850.  
  851.       ${cssText6d_input_panel_border}
  852.  
  853.       ${cssText6c_input_panel_overflow}
  854.  
  855.     }
  856.  
  857.  
  858.     @supports (overflow-anchor: auto) {
  859.  
  860.       .no-anchor * {
  861.           overflow-anchor: none;
  862.       }
  863.       .no-anchor > item-anchor {
  864.           overflow-anchor: auto;
  865.       }
  866.  
  867.       item-anchor {
  868.  
  869.           height:1px;
  870.           width: 100%;
  871.           transform: scaleY(0.00001);
  872.           transform-origin:0 0;
  873.           contain: strict;
  874.           opacity:0;
  875.           display:flex;
  876.           position:relative;
  877.           flex-shrink:0;
  878.           flex-grow:0;
  879.           margin-bottom:0;
  880.           overflow:hidden;
  881.           box-sizing:border-box;
  882.           visibility: visible;
  883.           content-visibility: visible;
  884.           contain-intrinsic-size: auto 1px;
  885.           pointer-events:none !important;
  886.  
  887.       }
  888.  
  889.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  890.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  891.       }
  892.  
  893.       html item-anchor {
  894.  
  895.           height: 1px;
  896.           width: 1px;
  897.           top: auto;
  898.           left: auto;
  899.           right: auto;
  900.           bottom: auto;
  901.           transform: translateY(-1px);
  902.           position: absolute;
  903.           z-index: -1;
  904.  
  905.       }
  906.  
  907.     }
  908.  
  909.     @supports (color: var(--pre-rendering)) {
  910.  
  911.       @keyframes dontRenderAnimation {
  912.           0% {
  913.               background-position-x: 3px;
  914.           }
  915.           100% {
  916.               background-position-x: 4px;
  917.           }
  918.       }
  919.  
  920.       .dont-render[class] {
  921.           /* visibility: collapse !important; */
  922.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  923.  
  924.           transform: scale(0.01) !important;
  925.           transform: scale(0.00001) !important;
  926.           transform: scale(0.0000001) !important;
  927.           transform-origin: 0 0 !important;
  928.           z-index: -1 !important;
  929.           contain: strict !important;
  930.           box-sizing: border-box !important;
  931.  
  932.           height: 1px !important;
  933.           height: 0.1px !important;
  934.           height: 0.01px !important;
  935.           height: 0.0001px !important;
  936.           height: 0.000001px !important;
  937.  
  938.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  939.  
  940.           pointer-events: none !important;
  941.           user-select: none !important;
  942.  
  943.       }
  944.  
  945.       #sk35z {
  946.         display: block !important;
  947.  
  948.         visibility: collapse !important;
  949.  
  950.         transform: scale(0.01) !important;
  951.         transform: scale(0.00001) !important;
  952.         transform: scale(0.0000001) !important;
  953.         transform-origin: 0 0 !important;
  954.         z-index: -1 !important;
  955.         contain: strict !important;
  956.         box-sizing: border-box !important;
  957.  
  958.         height: 1px !important;
  959.         height: 0.1px !important;
  960.         height: 0.01px !important;
  961.         height: 0.0001px !important;
  962.         height: 0.000001px !important;
  963.  
  964.         position: absolute !important;
  965.         top: -1000px !important;
  966.         left: -1000px !important;
  967.  
  968.       }
  969.  
  970.     }
  971.  
  972.     [rNgzQ] {
  973.       opacity: 0 !important;
  974.       pointer-events: none !important;
  975.     }
  976.  
  977.  
  978.     ${cssText10_show_more_blinker}
  979.  
  980.     ${cssText11_entire_message_clickable}
  981.  
  982.     ${cssText12_nowrap_tooltip}
  983.  
  984.     ${cssText13_no_text_select_when_menu_visible}
  985.  
  986.     ${cssText14_NO_FILTER_DROPDOWN_BORDER}
  987.  
  988.     ${cssText15_FIX_ANIMATION_TICKER_TEXT_POSITION}
  989.  
  990.     ${cssText16_FIX_AUTHOR_CHIP_BADGE_POSITION}
  991.  
  992.     ${cssText17_FIX_overwidth_banner_message}
  993.  
  994.     ${cssText18_REACTION_ANIMATION_PANEL_CSS_FIX}
  995.  
  996.   `;
  997.  
  998.  
  999.   const konsole = {
  1000.     nil: Symbol(),
  1001.     logs: [],
  1002.     style: '',
  1003.     log(...args) {
  1004.       konsole.logs.push({
  1005.         type: 'log',
  1006.         msg: [konsole.tag || konsole.nil, ...args, konsole.style || konsole.nil].filter(e => e !== konsole.nil)
  1007.       });
  1008.     },
  1009.     setTag(tag) {
  1010.       konsole.tag = tag;
  1011.     },
  1012.     setStyle(style) {
  1013.       konsole.style = style;
  1014.     },
  1015.     groupCollapsed(...args) {
  1016.  
  1017.       konsole.logs.push({
  1018.         type: 'groupCollapsed',
  1019.         msg: [...args].filter(e => e !== konsole.nil)
  1020.       });
  1021.     },
  1022.     groupEnd() {
  1023.  
  1024.       konsole.logs.push({
  1025.         type: 'groupEnd'
  1026.       })
  1027.     },
  1028.     print() {
  1029.       const copy = konsole.logs.slice(0);
  1030.       konsole.logs.length = 0;
  1031.       for (const { type, msg } of copy) {
  1032.         if (type === 'log') {
  1033.           console.log(...msg)
  1034.         } else if (type === 'groupCollapsed') {
  1035.  
  1036.           console.groupCollapsed(...msg)
  1037.         } else if (type === 'groupEnd') {
  1038.           console.groupEnd();
  1039.         }
  1040.  
  1041.       }
  1042.  
  1043.     }
  1044.   };
  1045.  
  1046.   /*
  1047.   konsole.groupCollapsedX = (text1, text2) => {
  1048.  
  1049.     if(!text2){
  1050.  
  1051.       konsole.groupCollapsed(`%c${text1}`,
  1052.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;"
  1053.     );
  1054.     }else{
  1055.  
  1056.       konsole.groupCollapsed(`%c${text1}%c${text2}`,
  1057.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1058.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1059.     );
  1060.     }
  1061.   }
  1062.  
  1063.   konsole.groupCollapsedX('YouTube Super Fast Chat');
  1064.  
  1065.   setTimeout(()=>{
  1066.  
  1067.     konsole.setTag('[[Fonts Pre-Rendering]]');
  1068.     konsole.log(123);
  1069.     konsole.log('wsd',332, 'ssa');
  1070.     konsole.setTag('');
  1071.   }, 100);
  1072.  
  1073.   setTimeout(()=>{
  1074.  
  1075.     konsole.setTag('[[Fonts Pre-Rendering 2]]');
  1076.     konsole.log(123);
  1077.     konsole.log('wsd',332, 'ssa');
  1078.     konsole.setTag('');
  1079.   }, 300);
  1080.  
  1081.   setTimeout(()=>{
  1082.  
  1083.   konsole.groupEnd();
  1084.   konsole.print();
  1085.   }, 1000);
  1086.  
  1087.   */
  1088.  
  1089.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  1090.  
  1091.   // Create a unique key for the script and check if it is already running
  1092.   const hkey_script = 'mchbwnoasqph';
  1093.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  1094.   win[hkey_script] = true;
  1095.  
  1096.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  1097.  
  1098.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  1099.     if (te4 < 3) {
  1100.       setTimeout(() => { });
  1101.       setTimeout(() => { });
  1102.     }
  1103.  
  1104.   }
  1105.  
  1106.   const firstKey = (obj) => {
  1107.     for (const key in obj) {
  1108.       if (obj.hasOwnProperty(key)) return key;
  1109.     }
  1110.     return null;
  1111.   }
  1112.  
  1113.   const firstObjectKey = (obj) => {
  1114.     for (const key in obj) {
  1115.       if (obj.hasOwnProperty(key) && typeof obj[key] === 'object') return key;
  1116.     }
  1117.     return null;
  1118.   }
  1119.  
  1120.   /**
  1121.  * Takes in a __SORTED__ array and inserts the provided value into
  1122.  * the correct, sorted, position.
  1123.  * > https://github.com/bhowell2/binary-insert-js/
  1124.  * @param array the sorted array where the provided value needs to be inserted (in order)
  1125.  * @param insertValue value to be added to the array
  1126.  * @param comparator function that helps determine where to insert the value (
  1127.  */
  1128.   function binaryInsert(array, insertValue, comparator) {
  1129.     let left = 0;
  1130.     let right = array.length;
  1131.  
  1132.     let z;
  1133.     // Directly return if array is empty or the insertValue should be at the end
  1134.     if (right === 0 || (z = comparator(array[right - 1], insertValue)) <= 0) {
  1135.       array.push(insertValue);
  1136.       return array;
  1137.     }
  1138.  
  1139.     // Check if the insertValue should be at the beginning
  1140.     if ((right === 1 ? z : comparator(array[0], insertValue)) >= 0) {
  1141.       array.unshift(insertValue);
  1142.       return array;
  1143.     }
  1144.     ++left; --right;
  1145.  
  1146.     // Main binary search loop to find the insertion position
  1147.     while (left < right) {
  1148.       const mid = Math.floor((right + left) / 2);
  1149.       const compared = comparator(array[mid], insertValue);
  1150.       if (compared < 0) {
  1151.         left = mid + 1;
  1152.       } else if (compared > 0) {
  1153.         right = mid;
  1154.       } else {
  1155.         // If equal, insert at the mid position
  1156.         left = right = mid;
  1157.         break;
  1158.       }
  1159.     }
  1160.  
  1161.     // Insertion is always at the right position due to the nature of the binary search
  1162.     array.splice(right, 0, insertValue);
  1163.     return array;
  1164.   }
  1165.  
  1166.  
  1167.  
  1168.  
  1169.   class LimitedSizeSet extends Set {
  1170.     constructor(n) {
  1171.       super();
  1172.       this.limit = n;
  1173.     }
  1174.  
  1175.     add(key) {
  1176.       if (!super.has(key)) {
  1177.         super.add(key);
  1178.         let n = super.size - this.limit;
  1179.         if (n > 0) {
  1180.           const iterator = super.values();
  1181.           do {
  1182.             const firstKey = iterator.next().value; // Get the first (oldest) key
  1183.             super.delete(firstKey); // Delete the oldest key
  1184.           } while (--n > 0)
  1185.         }
  1186.       }
  1187.     }
  1188.  
  1189.     removeAdd(key) {
  1190.       super.delete(key);
  1191.       super.add(key);
  1192.     }
  1193.  
  1194.   }
  1195.  
  1196.   // function removeElementFromArray(arr, index) {
  1197.   //   if (index >= 0 && index < arr.length) {
  1198.   //     arr.splice(index, 1);
  1199.   //   }
  1200.   // }
  1201.  
  1202.   // function getRandomInt(a, b) {
  1203.   //   // Ensure that 'a' and 'b' are integers
  1204.   //   a = Math.ceil(a);
  1205.   //   b = Math.floor(b);
  1206.  
  1207.   //   // Generate a random integer in the range [a, b]
  1208.   //   return Math.floor(Math.random() * (b - a + 1)) + a;
  1209.   // }
  1210.  
  1211.   function deepCopy(obj, skipKeys) {
  1212.     skipKeys = skipKeys || [];
  1213.     if (!obj || typeof obj !== 'object') return obj;
  1214.     if (Array.isArray(obj)) {
  1215.       return obj.map(item => deepCopy(item, skipKeys));
  1216.     }
  1217.     const copy = {};
  1218.     for (let key in obj) {
  1219.       if (!skipKeys.includes(key)) {
  1220.         copy[key] = deepCopy(obj[key], skipKeys);
  1221.       }
  1222.     }
  1223.     return copy;
  1224.   }
  1225.  
  1226.   class Mutex {
  1227.  
  1228.     constructor() {
  1229.       this.p = Promise.resolve()
  1230.     }
  1231.  
  1232.     /**
  1233.      *  @param {(lockResolve: () => void)} f
  1234.      */
  1235.     lockWith(f) {
  1236.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  1237.     }
  1238.  
  1239.   }
  1240.  
  1241.   const PromiseExternal = ((resolve_, reject_) => {
  1242.     const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  1243.     return class PromiseExternal extends Promise {
  1244.       constructor(cb = h) {
  1245.         super(cb);
  1246.         if (cb === h) {
  1247.           /** @type {(value: any) => void} */
  1248.           this.resolve = resolve_;
  1249.           /** @type {(reason?: any) => void} */
  1250.           this.reject = reject_;
  1251.         }
  1252.       }
  1253.     };
  1254.   })();
  1255.  
  1256.   /** @type {typeof PromiseExternal.prototype | null} */
  1257.   let relayPromise = null;
  1258.  
  1259.  
  1260.   /** @type {typeof PromiseExternal.prototype | null} */
  1261.   let onPlayStateChangePromise = null;
  1262.  
  1263.  
  1264.  
  1265.   let playEventsStack = Promise.resolve();
  1266.  
  1267.  
  1268.   let playerProgressChangedArg1 = null;
  1269.   let playerProgressChangedArg2 = null;
  1270.   let playerProgressChangedArg3 = null;
  1271.  
  1272.  
  1273.   function dr(s) {
  1274.     // reserved for future use
  1275.     return s;
  1276.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  1277.   }
  1278.  
  1279.   const insp = o => o ? (o.polymerController || o.inst || o || 0) : (o || 0);
  1280.   const indr = o => insp(o).$ || o.$ || 0;
  1281.  
  1282.   const getProto = (element) => {
  1283.     if (element) {
  1284.       const cnt = insp(element);
  1285.       return cnt.constructor.prototype || null;
  1286.     }
  1287.     return null;
  1288.   }
  1289.  
  1290.   const assertor = (f) => f() || console.assert(false, f + "");
  1291.  
  1292.   const fnIntegrity = (f, d) => {
  1293.     if (!f || typeof f !== 'function') {
  1294.       console.warn('f is not a function', f);
  1295.       return;
  1296.     }
  1297.     let p = f + "", s = 0, j = -1, w = 0;
  1298.     for (let i = 0, l = p.length; i < l; i++) {
  1299.       const t = p[i];
  1300.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  1301.         if (j < i - 1) w++;
  1302.         j = i;
  1303.       } else {
  1304.         s++;
  1305.       }
  1306.     }
  1307.     let itz = `${f.length}.${s}.${w}`;
  1308.     if (!d) {
  1309.       return itz;
  1310.     } else if (itz !== d) {
  1311.       console.warn('fnIntegrity=false', itz);
  1312.       return false;
  1313.     } else {
  1314.       return true;
  1315.     }
  1316.   }
  1317.  
  1318.  
  1319.   const px2cm = (px) => px * window.devicePixelRatio * 0.026458333;
  1320.   const px2mm = (px) => px * window.devicePixelRatio * 0.26458333;
  1321.  
  1322.  
  1323.   ; (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS || DISABLE_FLAGS_SHADYDOM_FREE) && (() => {
  1324.  
  1325.     const _config_ = () => {
  1326.       try {
  1327.         return ytcfg.data_;
  1328.       } catch (e) { }
  1329.       return null;
  1330.     };
  1331.  
  1332.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1333.  
  1334.       // console.log(700)
  1335.  
  1336.       if (!EXPERIMENT_FLAGS) return;
  1337.  
  1338.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1339.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1340.           // EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true; // timestamp toggle issue
  1341.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1342.           // console.log(701)
  1343.         }
  1344.       }
  1345.  
  1346.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1347.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1348.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1349.         // console.log(702);
  1350.       }
  1351.  
  1352.       if (DISABLE_FLAGS_SHADYDOM_FREE) {
  1353.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_node_methods = false;
  1354.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_query_methods = false;
  1355.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_readonly_properties_batch_one = false;
  1356.         EXPERIMENT_FLAGS.enable_shadydom_free_parent_node = false;
  1357.         EXPERIMENT_FLAGS.enable_shadydom_free_children = false;
  1358.         EXPERIMENT_FLAGS.enable_shadydom_free_last_child = false;
  1359.       }
  1360.  
  1361.       //   EXPERIMENT_FLAGS.enable_button_behavior_reuse = false;
  1362.  
  1363.     };
  1364.  
  1365.     const uf = (config_) => {
  1366.       config_ = config_ || _config_();
  1367.       if (config_) {
  1368.         const { EXPERIMENT_FLAGS, EXPERIMENTS_FORCED_FLAGS } = config_;
  1369.         if (EXPERIMENT_FLAGS) {
  1370.           flagsFn(EXPERIMENT_FLAGS);
  1371.           if (EXPERIMENTS_FORCED_FLAGS) flagsFn(EXPERIMENTS_FORCED_FLAGS);
  1372.         }
  1373.       }
  1374.     }
  1375.  
  1376.     window._ytConfigHacks.add((config_) => {
  1377.       uf(config_);
  1378.     });
  1379.  
  1380.     uf();
  1381.  
  1382.   })();
  1383.  
  1384.   if (DISABLE_Translation_By_Google) {
  1385.  
  1386.     let mo = new MutationObserver(() => {
  1387.  
  1388.       if (!mo) return;
  1389.       let h = document.head;
  1390.       if (!h) return;
  1391.       mo.disconnect();
  1392.       mo.takeRecords();
  1393.       mo = null;
  1394.  
  1395.       let meta = document.createElement('meta');
  1396.       meta.setAttribute('name', 'google');
  1397.       meta.setAttribute('content', 'notranslate');
  1398.       h.appendChild(meta);
  1399.  
  1400.  
  1401.     });
  1402.     mo.observe(document, { subtree: true, childList: true });
  1403.   }
  1404.  
  1405.  
  1406.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  1407.  
  1408.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  1409.   if (!isContainSupport) {
  1410.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  1411.   }
  1412.  
  1413.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  1414.   if (!isOverflowAnchorSupport) {
  1415.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  1416.   }
  1417.  
  1418.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && isOverflowAnchorSupport && ENABLE_NO_SMOOTH_TRANSFORM;
  1419.  
  1420.   let hasTimerModified = null;
  1421.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  1422.  
  1423.   const fxOperator = (proto, propertyName) => {
  1424.     let propertyDescriptorGetter = null;
  1425.     try {
  1426.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  1427.     } catch (e) { }
  1428.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  1429.       try {
  1430.  
  1431.         return propertyDescriptorGetter.call(dr(e));
  1432.       } catch (e) { }
  1433.       return e[propertyName];
  1434.     } : (e) => e[propertyName];
  1435.   };
  1436.  
  1437.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  1438.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  1439.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  1440.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  1441.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  1442.  
  1443.   const groupCollapsed = (text1, text2) => {
  1444.  
  1445.     console.groupCollapsed(`%c${text1}%c${text2}`,
  1446.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1447.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1448.     );
  1449.   }
  1450.  
  1451.   // const microNow = () => performance.now() + (performance.timeOrigin || performance.timing.navigationStart);
  1452.  
  1453.  
  1454.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  1455.   const onRegistryReady = (callback) => {
  1456.     if (typeof customElements === 'undefined') {
  1457.       if (!('__CE_registry' in document)) {
  1458.         // https://github.com/webcomponents/polyfills/
  1459.         Object.defineProperty(document, '__CE_registry', {
  1460.           get() {
  1461.             // return undefined
  1462.           },
  1463.           set(nv) {
  1464.             if (typeof nv == 'object') {
  1465.               delete this.__CE_registry;
  1466.               this.__CE_registry = nv;
  1467.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  1468.             }
  1469.             return true;
  1470.           },
  1471.           enumerable: false,
  1472.           configurable: true
  1473.         })
  1474.       }
  1475.       let eventHandler = (evt) => {
  1476.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1477.         const f = callback;
  1478.         callback = null;
  1479.         eventHandler = null;
  1480.         f();
  1481.       };
  1482.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1483.     } else {
  1484.       callback();
  1485.     }
  1486.   };
  1487.  
  1488.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1489.  
  1490.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1491.  
  1492.     return new Promise(resolve => {
  1493.  
  1494.       let ro = new ResizeObserver(entries => {
  1495.         if (entries && entries.length >= 1) {
  1496.           resolve();
  1497.           ro.disconnect();
  1498.           ro = null;
  1499.         }
  1500.       });
  1501.       ro.observe(sizingTarget);
  1502.  
  1503.  
  1504.  
  1505.     });
  1506.  
  1507.   } : (sizingTarget) => {
  1508.  
  1509.  
  1510.     return new Promise(resolve => {
  1511.  
  1512.       let io = new IntersectionObserver(entries => {
  1513.         if (entries && entries.length >= 1) {
  1514.           resolve();
  1515.           io.disconnect();
  1516.           io = null;
  1517.         }
  1518.       });
  1519.       io.observe(sizingTarget);
  1520.  
  1521.  
  1522.  
  1523.     });
  1524.  
  1525.   };
  1526.  
  1527.   /* globals WeakRef:false */
  1528.  
  1529.   /** @type {(o: Object | null) => WeakRef | null} */
  1530.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1531.  
  1532.   /** @type {(wr: Object | null) => Object | null} */
  1533.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1534.  
  1535.   const getLCRDummy = () => {
  1536.     // direct createElement or createComponent_ will make the emoji rendering crashed. reason TBC
  1537.  
  1538.     return Promise.all([customElements.whenDefined('yt-live-chat-app'), customElements.whenDefined('yt-live-chat-renderer')]).then(async () => {
  1539.  
  1540.       const tag = "yt-live-chat-renderer"
  1541.       let dummy = document.querySelector(tag);
  1542.       if (!dummy) {
  1543.  
  1544.         let mo = null;
  1545.  
  1546.         const ytLiveChatApp = document.querySelector('yt-live-chat-app') || document.createElement('yt-live-chat-app');
  1547.  
  1548.         const lcaProto = getProto(ytLiveChatApp);
  1549.  
  1550.         dummy = await new Promise(resolve => {
  1551.  
  1552.           if (typeof lcaProto.createComponent_ === 'function' && !lcaProto.createComponent99_) {
  1553.  
  1554.             lcaProto.createComponent99_ = lcaProto.createComponent_;
  1555.             lcaProto.createComponent98_ = function (a, b, c) {
  1556.               // (3) ['yt-live-chat-renderer', {…}, true]
  1557.               const r = this.createComponent99_.apply(this, arguments);
  1558.               if (a === 'yt-live-chat-renderer') {
  1559.                 resolve(r);
  1560.               }
  1561.               return r;
  1562.             };
  1563.             lcaProto.createComponent_ = lcaProto.createComponent98_;
  1564.  
  1565.           } else {
  1566.  
  1567.             mo = new MutationObserver(() => {
  1568.               const t = document.querySelector(tag);
  1569.               if (t) {
  1570.                 resolve(t);
  1571.               }
  1572.             });
  1573.             mo.observe(document, { subtree: true, childList: true })
  1574.           }
  1575.  
  1576.         });
  1577.  
  1578.         if (mo) {
  1579.           mo.disconnect();
  1580.           mo.takeRecords();
  1581.           mo = null;
  1582.         }
  1583.  
  1584.         if (lcaProto.createComponent99_ && lcaProto.createComponent_ && lcaProto.createComponent98_ === lcaProto.createComponent_) {
  1585.           lcaProto.createComponent_ = lcaProto.createComponent99_;
  1586.           lcaProto.createComponent99_ = null;
  1587.           lcaProto.createComponent98_ = null;
  1588.         }
  1589.  
  1590.       }
  1591.       return dummy;
  1592.  
  1593.     });
  1594.   }
  1595.  
  1596.   const { addCssManaged } = (() => {
  1597.  
  1598.     const addFontPreRendering = () => {
  1599.  
  1600.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1601.  
  1602.       let efsContainer = document.createElement('elzm-fonts');
  1603.       efsContainer.id = 'elzm-fonts-yk75g'
  1604.  
  1605.       const arr = [];
  1606.       let p = document.createElement('elzm-font');
  1607.       arr.push(p);
  1608.  
  1609.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1610.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1611.  
  1612.           p = document.createElement('elzm-font');
  1613.           p.style.fontWeight = size;
  1614.           arr.push(p);
  1615.         }
  1616.       }
  1617.  
  1618.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1619.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1620.  
  1621.           p = document.createElement('elzm-font');
  1622.           p.style.fontFamily = 'Roboto';
  1623.           p.style.fontWeight = size;
  1624.           arr.push(p);
  1625.         }
  1626.       }
  1627.  
  1628.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1629.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1630.  
  1631.           p = document.createElement('elzm-font');
  1632.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1633.           p.style.fontWeight = size;
  1634.           arr.push(p);
  1635.         }
  1636.       }
  1637.  
  1638.  
  1639.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1640.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1641.  
  1642.           p = document.createElement('elzm-font');
  1643.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1644.           p.style.fontWeight = size;
  1645.           arr.push(p);
  1646.         }
  1647.       }
  1648.  
  1649.  
  1650.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1651.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1652.  
  1653.           p = document.createElement('elzm-font');
  1654.           p.style.fontFamily = 'sans-serif';
  1655.           p.style.fontWeight = size;
  1656.           arr.push(p);
  1657.         }
  1658.       }
  1659.  
  1660.       console.log('number of elzm-font elements', arr.length);
  1661.  
  1662.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1663.  
  1664.       (document.body || document.documentElement).appendChild(efsContainer);
  1665.  
  1666.  
  1667.       console.log('elzm-font elements have been added to the page for rendering.');
  1668.  
  1669.       console.groupEnd();
  1670.  
  1671.     }
  1672.  
  1673.     let isCssAdded = false;
  1674.  
  1675.     function addCssElement() {
  1676.       let s = document.createElement('style');
  1677.       s.id = 'ewRvC';
  1678.       return s;
  1679.     }
  1680.  
  1681.     const addCssManaged = () => {
  1682.       if (!isCssAdded && document.documentElement && document.head) {
  1683.         isCssAdded = true;
  1684.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1685.         if (ENABLE_FONT_PRE_RENDERING) {
  1686.           Promise.resolve().then(addFontPreRendering)
  1687.         }
  1688.       }
  1689.     }
  1690.  
  1691.     return { addCssManaged };
  1692.   })();
  1693.  
  1694.  
  1695.   const { setupStyle } = (() => {
  1696.  
  1697.     const sp7 = Symbol();
  1698.  
  1699.     const proxyHelperFn = (dummy) => ({
  1700.  
  1701.       get(target, prop) {
  1702.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1703.       },
  1704.       set(target, prop, value) {
  1705.         if (!(prop in dummy)) {
  1706.           target[prop] = value;
  1707.         }
  1708.         return true;
  1709.       },
  1710.       has(target, prop) {
  1711.         return (prop in target);
  1712.       },
  1713.       deleteProperty(target, prop) {
  1714.         return true;
  1715.       },
  1716.       ownKeys(target) {
  1717.         return Object.keys(target);
  1718.       },
  1719.       defineProperty(target, key, descriptor) {
  1720.         return Object.defineProperty(target, key, descriptor);
  1721.       },
  1722.       getOwnPropertyDescriptor(target, key) {
  1723.         return Object.getOwnPropertyDescriptor(target, key);
  1724.       },
  1725.  
  1726.     });
  1727.  
  1728.     const setupStyle = (m1, m2) => {
  1729.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1730.  
  1731.       const dummy1v = {
  1732.         transform: '',
  1733.         height: '',
  1734.         minHeight: '',
  1735.         paddingBottom: '',
  1736.         paddingTop: ''
  1737.       };
  1738.  
  1739.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1740.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1741.         dummy1v[k] = dummyStyleFn(k);
  1742.       }
  1743.  
  1744.       const dummy1p = proxyHelperFn(dummy1v);
  1745.       const sp1v = new Proxy(m1.style, dummy1p);
  1746.       const sp2v = new Proxy(m2.style, dummy1p);
  1747.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1748.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1749.       m1.removeAttribute("style");
  1750.       m2.removeAttribute("style");
  1751.  
  1752.     }
  1753.  
  1754.     return { setupStyle };
  1755.  
  1756.   })();
  1757.  
  1758.  
  1759.  
  1760.   function setThumbnails(config) {
  1761.  
  1762.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1763.  
  1764.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1765.  
  1766.  
  1767.       if (thumbnails && thumbnails.length > 0) {
  1768.         if (flag0 > 0 && thumbnails.length > 1) {
  1769.           let pSize = 0;
  1770.           let newThumbnails = [];
  1771.           for (const thumbnail of thumbnails) {
  1772.             if (!thumbnail || !thumbnail.url) continue;
  1773.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1774.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1775.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1776.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1777.               newThumbnails.push(thumbnail);
  1778.               if (imageLinks) imageLinks.add(thumbnail.url);
  1779.             }
  1780.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1781.               pSize = thumbnail.width;
  1782.             }
  1783.           }
  1784.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1785.             baseObject.thumbnails = newThumbnails;
  1786.           } else {
  1787.             newThumbnails.length = 0;
  1788.           }
  1789.           newThumbnails = null;
  1790.         } else {
  1791.           for (const thumbnail of thumbnails) {
  1792.             if (thumbnail && thumbnail.url) {
  1793.               if (imageLinks) imageLinks.add(thumbnail.url);
  1794.             }
  1795.           }
  1796.         }
  1797.       }
  1798.  
  1799.     }
  1800.   }
  1801.  
  1802.   function fixLiveChatItem(item, imageLinks) {
  1803.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1804.     if (liveChatTextMessageRenderer) {
  1805.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1806.       if (messageRuns && messageRuns.length > 0) {
  1807.         for (const run of messageRuns) {
  1808.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1809.           setThumbnails({
  1810.             baseObject: emojiImage,
  1811.             thumbnails: emojiImage.thumbnails,
  1812.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1813.             imageLinks
  1814.           });
  1815.         }
  1816.       }
  1817.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1818.       setThumbnails({
  1819.         baseObject: authorPhoto,
  1820.         thumbnails: authorPhoto.thumbnails,
  1821.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1822.         imageLinks
  1823.       });
  1824.     }
  1825.   }
  1826.  
  1827.  
  1828.  
  1829.   let kptPF = null;
  1830.   const emojiPrefetched = new LimitedSizeSet(PREFETCH_LIMITED_SIZE_EMOJI);
  1831.   const authorPhotoPrefetched = new LimitedSizeSet(PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO);
  1832.  
  1833.   function linker(link, rel, href, _as) {
  1834.     return new Promise(resolve => {
  1835.       if (!link) link = document.createElement('link');
  1836.       link.rel = rel;
  1837.       if (_as) link.setAttribute('as', _as);
  1838.       link.onload = function () {
  1839.         resolve({
  1840.           link: this,
  1841.           success: true
  1842.         })
  1843.         this.remove();
  1844.       };
  1845.       link.onerror = function () {
  1846.         resolve({
  1847.           link: this,
  1848.           success: false
  1849.         });
  1850.         this.remove();
  1851.       };
  1852.       link.href = href;
  1853.       document.head.appendChild(link);
  1854.       link = null;
  1855.     });
  1856.   }
  1857.  
  1858.  
  1859.  
  1860.   const cleanContext = async (win) => {
  1861.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1862.     try {
  1863.       let mx = 16; // MAX TRIAL
  1864.       const frameId = 'vanillajs-iframe-v1';
  1865.       /** @type {HTMLIFrameElement | null} */
  1866.       let frame = document.getElementById(frameId);
  1867.       let removeIframeFn = null;
  1868.       if (!frame) {
  1869.         frame = document.createElement('iframe');
  1870.         frame.id = frameId;
  1871.         const blobURL = typeof webkitCancelAnimationFrame === 'function' && typeof kagi === 'undefined' ? (frame.src = URL.createObjectURL(new Blob([], { type: 'text/html' }))) : null; // avoid Brave Crash
  1872.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1873.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1874.         n.appendChild(frame);
  1875.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1876.         const root = document.documentElement;
  1877.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1878.         if (blobURL) Promise.resolve().then(() => URL.revokeObjectURL(blobURL));
  1879.  
  1880.         removeIframeFn = (setTimeout) => {
  1881.           const removeIframeOnDocumentReady = (e) => {
  1882.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1883.             e = n;
  1884.             n = win = removeIframeFn = 0;
  1885.             setTimeout ? setTimeout(() => e.remove(), 200) : e.remove();
  1886.           }
  1887.           if (!setTimeout || document.readyState !== 'loading') {
  1888.             removeIframeOnDocumentReady();
  1889.           } else {
  1890.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1891.           }
  1892.         }
  1893.       }
  1894.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1895.       const fc = frame.contentWindow;
  1896.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1897.       try {
  1898.         const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1899.         const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1900.         for (let k in res) res[k] = res[k].bind(win); // necessary
  1901.         if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1902.  
  1903.         /** @type {HTMLElement} */
  1904.         const HTMLElementProto = fc.HTMLElement.prototype;
  1905.         /** @type {EventTarget} */
  1906.         const EventTargetProto = fc.EventTarget.prototype;
  1907.         // jsonParseFix = {
  1908.         //   _JSON: fc.JSON, _parse: fc.JSON.parse
  1909.         // }
  1910.         return {
  1911.           ...res,
  1912.           animate: HTMLElementProto.animate,
  1913.           addEventListener: EventTargetProto.addEventListener,
  1914.           removeEventListener: EventTargetProto.removeEventListener
  1915.         };
  1916.       } catch (e) {
  1917.         if (removeIframeFn) removeIframeFn();
  1918.         return null;
  1919.       }
  1920.     } catch (e) {
  1921.       console.warn(e);
  1922.       return null;
  1923.     }
  1924.   };
  1925.  
  1926.   cleanContext(win).then(__CONTEXT__ => {
  1927.     if (!__CONTEXT__) return null;
  1928.  
  1929.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1930.  
  1931.     const wmComputedStyle = new WeakMap();
  1932.     const getComputedStyleCached = (elem) => {
  1933.       let cs = wmComputedStyle.get(elem);
  1934.       if (!cs) {
  1935.         cs = getComputedStyle(elem);
  1936.         wmComputedStyle.set(elem, cs);
  1937.       }
  1938.       return cs;
  1939.     }
  1940.  
  1941.  
  1942.     const isGPUAccelerationAvailable = (() => {
  1943.       // https://gist.github.com/cvan/042b2448fcecefafbb6a91469484cdf8
  1944.       try {
  1945.         const canvas = document.createElement('canvas');
  1946.         return !!(canvas.getContext('webgl') || canvas.getContext('experimental-webgl'));
  1947.       } catch (e) {
  1948.         return false;
  1949.       }
  1950.     })();
  1951.  
  1952.     const foregroundPromiseFn_noGPU = (() => {
  1953.  
  1954.       if (isGPUAccelerationAvailable) return null;
  1955.  
  1956.       const pd = Object.getOwnPropertyDescriptor(Document.prototype, 'visibilityState');
  1957.       if (!pd || typeof pd.get !== 'function') return null;
  1958.       const pdGet = pd.get;
  1959.  
  1960.       let pr = null;
  1961.  
  1962.       let hState = pdGet.call(document) === 'hidden';
  1963.       // let cid = 0;
  1964.       pureAddEventListener.call(document, 'visibilitychange', (evt) => {
  1965.         const newHState = pdGet.call(document) === 'hidden';
  1966.         if (hState !== newHState) {
  1967.           // if (cid > 0) cid = clearInterval(cid);
  1968.           hState = newHState;
  1969.           if (!hState && pr) pr = pr.resolve();
  1970.         }
  1971.       });
  1972.  
  1973.       // cid = setInterval(() => {
  1974.       //   const newHState = document.visibilityState === 'hidden';
  1975.       //   if (hState !== newHState) {
  1976.       //     hState = newHState;
  1977.       //     if (!hState && pr) pr = pr.resolve();
  1978.       //   }
  1979.       // }, 100);
  1980.  
  1981.  
  1982.       return (() => {
  1983.         if (pr) return pr;
  1984.         const w = ((!hState && setTimeout(() => {
  1985.           if (!hState && pr === w) pr = pr.resolve();
  1986.         })), (pr = new PromiseExternal()));
  1987.         return w;
  1988.       });
  1989.  
  1990.     })();
  1991.  
  1992.     // window.foregroundPromiseFn_noGPU = foregroundPromiseFn_noGPU;
  1993.  
  1994.     let rafPromise = null;
  1995.     const getRafPromise = () => rafPromise || (rafPromise = new Promise(resolve => {
  1996.       requestAnimationFrame(hRes => {
  1997.         rafPromise = null;
  1998.         resolve(hRes);
  1999.       });
  2000.     }));
  2001.     const foregroundPromiseFn = foregroundPromiseFn_noGPU || getRafPromise;
  2002.  
  2003.     const iAFP = foregroundPromiseFn_noGPU ? foregroundPromiseFn_noGPU : typeof IntersectionObserver === 'undefined' ? getRafPromise : (() => {
  2004.  
  2005.       const ioWM = new WeakMap();
  2006.       const ek = Symbol();
  2007.       /** @type {IntersectionObserverCallback} */
  2008.       const ioCb = (entries, observer) => {
  2009.         /** @type {PromiseExternal} */
  2010.         const pr = observer[ek];
  2011.         const resolve = pr.resolve;
  2012.         let target;
  2013.         if (resolve && (target = ((entries ? entries[0] : 0) || 0).target) instanceof Element) {
  2014.           pr.resolve = null;
  2015.           observer.unobserve(target);
  2016.           resolve();
  2017.         }
  2018.       };
  2019.       /**
  2020.        * 
  2021.        * @param {Element} elm 
  2022.        * @returns {Promise<void>}
  2023.        */
  2024.       const iAFP = (elm) => {
  2025.         let io = ioWM.get(elm);
  2026.         if (!io) {
  2027.           io = new IntersectionObserver(ioCb);
  2028.           ioWM.set(elm, io); // strong reference
  2029.         }
  2030.         let pr = io[ek];
  2031.         if (!pr) {
  2032.           pr = io[ek] = new PromiseExternal();
  2033.           io.observe(elm);
  2034.         }
  2035.         return pr;
  2036.       }
  2037.  
  2038.       return iAFP;
  2039.  
  2040.     })();
  2041.  
  2042.     let playerState = null;
  2043.     let _playerState = null;
  2044.     let lastPlayerProgress = null;
  2045.     let relayCount = 0;
  2046.     let playerEventsByIframeRelay = false;
  2047.     let isPlayProgressTriggered = false;
  2048.     let waitForInitialDataCompletion = 0;
  2049.  
  2050.  
  2051.  
  2052.     let aeConstructor = null;
  2053.  
  2054.     // << __openedChanged82 >>
  2055.     let currentMenuPivotWR = null;
  2056.  
  2057.     // << if DO_PARTICIPANT_LIST_HACKS >>
  2058.     const beforeParticipantsMap = new WeakMap();
  2059.     // << end >>
  2060.  
  2061.  
  2062.  
  2063.     // << if onRegistryReadyForDOMOperations >>
  2064.  
  2065.     let dt0 = Date.now() - 2000;
  2066.     const dateNow = () => Date.now() - dt0;
  2067.     // let lastScroll = 0;
  2068.     // let lastLShow = 0;
  2069.     let lastWheel = 0;
  2070.     let lastMouseDown = 0;
  2071.     let lastMouseUp = 0;
  2072.     let currentMouseDown = false;
  2073.     let lastTouchDown = 0;
  2074.     let lastTouchUp = 0;
  2075.     let currentTouchDown = false;
  2076.     let lastUserInteraction = 0;
  2077.  
  2078.     let scrollChatFn = null;
  2079.  
  2080.     let skipDontRender = true; // true first; false by flushActiveItems_
  2081.     let allowDontRender = null;
  2082.  
  2083.     // ---- #items mutation ----
  2084.     let sk35zResolveFn = null;
  2085.     let firstList = true;
  2086.  
  2087.     // << end >>
  2088.  
  2089.     class RAFHub {
  2090.       constructor() {
  2091.         /** @type {number} */
  2092.         this.startAt = 8170;
  2093.         /** @type {number} */
  2094.         this.counter = 0;
  2095.         /** @type {number} */
  2096.         this.rid = 0;
  2097.         /** @type {Map<number, FrameRequestCallback>} */
  2098.         this.funcs = new Map();
  2099.         const funcs = this.funcs;
  2100.         /** @type {FrameRequestCallback} */
  2101.         this.bCallback = this.mCallback.bind(this);
  2102.         this.pClear = () => funcs.clear();
  2103.         this.keepRAF = false;
  2104.       }
  2105.       /** @param {DOMHighResTimeStamp} highResTime */
  2106.       mCallback(highResTime) {
  2107.         this.rid = 0;
  2108.         Promise.resolve().then(this.pClear);
  2109.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  2110.       }
  2111.       /** @param {FrameRequestCallback} f */
  2112.       request(f) {
  2113.         if (this.counter > 1e9) this.counter = 9;
  2114.         let cid = this.startAt + (++this.counter);
  2115.         this.funcs.set(cid, f);
  2116.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  2117.         return cid;
  2118.       }
  2119.       /** @param {number} cid */
  2120.       cancel(cid) {
  2121.         cid = +cid;
  2122.         if (cid > 0) {
  2123.           if (cid <= this.startAt) {
  2124.             return cancelAnimationFrame(cid);
  2125.           }
  2126.           if (this.rid > 0) {
  2127.             this.funcs.delete(cid);
  2128.             if (this.funcs.size === 0 && !this.keepRAF) {
  2129.               cancelAnimationFrame(this.rid);
  2130.               this.rid = 0;
  2131.             }
  2132.           }
  2133.         }
  2134.       }
  2135.     }
  2136.  
  2137.     function basePrefetching() {
  2138.  
  2139.       new Promise(resolve => {
  2140.  
  2141.         if (document.readyState !== 'loading') {
  2142.           resolve();
  2143.         } else {
  2144.           win.addEventListener("DOMContentLoaded", resolve, false);
  2145.         }
  2146.  
  2147.       }).then(() => {
  2148.         const hostL1 = [
  2149.           'https://www.youtube.com', 'https://googlevideo.com',
  2150.           'https://googleapis.com', 'https://accounts.youtube.com',
  2151.           'https://www.gstatic.com', 'https://ggpht.com',
  2152.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  2153.         ];
  2154.  
  2155.         const hostL2 = [
  2156.           'https://youtube.com',
  2157.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  2158.         ];
  2159.  
  2160.         let link = null;
  2161.  
  2162.         function kn() {
  2163.  
  2164.           link = document.createElement('link');
  2165.           if (link.relList && link.relList.supports) {
  2166.             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)
  2167.           } else {
  2168.             kptPF = 0;
  2169.           }
  2170.  
  2171.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  2172.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  2173.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  2174.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  2175.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  2176.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  2177.           console.groupEnd();
  2178.  
  2179.         }
  2180.  
  2181.         for (const h of hostL1) {
  2182.  
  2183.           if (kptPF === null) kn();
  2184.           if (ENABLE_BASE_PREFETCHING) {
  2185.             // if (kptPF & 1) {
  2186.             //   linker(link, 'dns-prefetch', h);
  2187.             //   link = null;
  2188.             // }
  2189.             if (kptPF & 2) {
  2190.               linker(link, 'preconnect', h);
  2191.               link = null;
  2192.             }
  2193.           }
  2194.         }
  2195.  
  2196.         for (const h of hostL2) {
  2197.           if (kptPF === null) kn();
  2198.           if (ENABLE_BASE_PREFETCHING) {
  2199.             if (kptPF & 1) {
  2200.               linker(link, 'dns-prefetch', h);
  2201.               link = null;
  2202.             }
  2203.           }
  2204.         }
  2205.  
  2206.       })
  2207.  
  2208.  
  2209.     }
  2210.  
  2211.     if (DO_LINK_PREFETCH) basePrefetching();
  2212.  
  2213.     const { notifyPath7081 } = (() => {
  2214.       // DO_PARTICIPANT_LIST_HACKS
  2215.  
  2216.       const mutexParticipants = new Mutex();
  2217.  
  2218.       let uvid = 0;
  2219.       let r95dm = 0;
  2220.       let c95dm = -1;
  2221.  
  2222.       const foundMap = (base, content) => {
  2223.         /*
  2224.           let lastSearch = 0;
  2225.           let founds = base.map(baseEntry => {
  2226.             let search = content.indexOf(baseEntry, lastSearch);
  2227.             if (search < 0) return false;
  2228.             lastSearch = search + 1;
  2229.             return true;
  2230.           });
  2231.           return founds;
  2232.         */
  2233.         const contentSet = new Set(content);
  2234.         return base.map(baseEntry => contentSet.has(baseEntry));
  2235.  
  2236.       }
  2237.  
  2238.  
  2239.  
  2240.       let participantsForSpliceWR = null;
  2241.  
  2242.       class IndexSpliceEntry {
  2243.         /**
  2244.          *
  2245.          * @param {number} _index
  2246.          * @param {number} _addedCount
  2247.          * @param {any[]} _removed
  2248.          */
  2249.         constructor(_index, _addedCount, _removed) {
  2250.           this.index = _index;
  2251.           this.addedCount = _addedCount;
  2252.           this.removed = _removed;
  2253.         }
  2254.         get __proxy312__() {
  2255.           return 1
  2256.         }
  2257.         get type() {
  2258.           return 'splice'
  2259.         }
  2260.         get object() {
  2261.           return kRef(participantsForSpliceWR); // avoid memory leakage
  2262.         }
  2263.       }
  2264.  
  2265.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  2266.  
  2267.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  2268.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  2269.  
  2270.         const nAfter = foundsForAfter.length;
  2271.         const nBefore = foundsForBefore.length;
  2272.  
  2273.         const indexSplices = [];
  2274.         const contentUpdates = [];
  2275.         participantsForSpliceWR = null;
  2276.         for (let i = 0, j = 0; i < nBefore || j < nAfter;) {
  2277.           if (beforeParticipants[i] === participants[j]) {
  2278.             i++; j++;
  2279.           } else if (idsBefore[i] === idsAfter[j]) {
  2280.             // content changed
  2281.             contentUpdates.push({ indexI: i, indexJ: j })
  2282.             i++; j++;
  2283.           } else {
  2284.             let addedCount = 0;
  2285.             for (let q = j; q < nAfter; q++) {
  2286.               if (foundsForAfter[q] === false) addedCount++;
  2287.               else break;
  2288.             }
  2289.             let removedCount = 0;
  2290.             for (let q = i; q < nBefore; q++) {
  2291.               if (foundsForBefore[q] === false) removedCount++;
  2292.               else break;
  2293.             }
  2294.             if (!addedCount && !removedCount) {
  2295.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  2296.             }
  2297.             const entry = new IndexSpliceEntry(
  2298.               j,
  2299.               addedCount,
  2300.               removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  2301.             );
  2302.             indexSplices.push(entry);
  2303.             i += removedCount;
  2304.             j += addedCount;
  2305.           }
  2306.         }
  2307.         foundsForBefore = null;
  2308.         foundsForAfter = null;
  2309.         idsBefore = null;
  2310.         idsAfter = null;
  2311.         beforeParticipants = null;
  2312.         participantsForSpliceWR = indexSplices.length > 0 ? mWeakRef(participants) : null;
  2313.         participants = null;
  2314.         return { indexSplices, contentUpdates };
  2315.  
  2316.       }
  2317.  
  2318.       /*
  2319.  
  2320.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  2321.  
  2322.       VM63631:1 Error
  2323.       at customElements.get.notifyPath (<anonymous>:1:122)
  2324.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  2325.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  2326.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  2327.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  2328.       at ju (live_chat_polymer.js:1674:217)
  2329.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  2330.       at b._flushProperties (live_chat_polymer.js:1597:200)
  2331.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  2332.       at a.notifyPath (live_chat_polymer.js:1741:182)
  2333.  
  2334.       */
  2335.  
  2336.       function convertToIds(participants) {
  2337.         return participants.map(participant => {
  2338.           if (!participant || typeof participant !== 'object') {
  2339.             console.warn('Error(0xFA41): convertToIds', participant);
  2340.             return participant; // just in case
  2341.           }
  2342.           let keys = Object.keys(participant);
  2343.           // liveChatTextMessageRenderer
  2344.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  2345.           // liveChatPaidMessageRenderer
  2346.           /*
  2347.  
  2348.             'yt-live-chat-participant-renderer' utilizes the following:
  2349.             authorName.simpleText: string
  2350.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  2351.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  2352.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  2353.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  2354.  
  2355.           */
  2356.           if (keys.length !== 1) {
  2357.             console.warn('Error(0xFA42): convertToIds', participant);
  2358.             return participant; // just in case
  2359.           }
  2360.           let key = keys[0];
  2361.           let renderer = (participant[key] || 0);
  2362.           let authorName = (renderer.authorName || 0);
  2363.           let text = `${authorName.simpleText || authorName.text}`
  2364.           let res = participant; // fallback if it is not a vaild entry
  2365.           if (typeof text !== 'string') {
  2366.             console.warn('Error(0xFA53): convertToIds', participant);
  2367.           } else {
  2368.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  2369.             if (text.length > 1) res = text;
  2370.           }
  2371.           return res;
  2372.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  2373.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  2374.         });
  2375.       }
  2376.  
  2377.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  2378.         // just update when content is changed.
  2379.         if (p1.authorName !== p2.authorName) return true;
  2380.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  2381.         if (p1.authorBadges !== p2.authorBadges) return true;
  2382.         return false;
  2383.       } : (p1, p2) => {
  2384.         // keep integrity all the time.
  2385.         return p1 !== p2; // always true
  2386.       }
  2387.  
  2388.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  2389.  
  2390.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  2391.           if (path !== "participantsManager.participants") {
  2392.             return this.__notifyPath5036__.apply(this, arguments);
  2393.           }
  2394.           if (c95dm === r95dm) return;
  2395.         } else {
  2396.           const stack = new Error().stack;
  2397.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  2398.             return this.__notifyPath5036__.apply(this, arguments);
  2399.           }
  2400.         }
  2401.  
  2402.         if (uvid > 1e8) uvid = uvid % 100;
  2403.         let tid = ++uvid;
  2404.  
  2405.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  2406.         mutexParticipants.lockWith(lockResolve => {
  2407.  
  2408.           const participants00 = cnt.participantsManager.participants;
  2409.  
  2410.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  2411.             lockResolve();
  2412.             return;
  2413.           }
  2414.  
  2415.           let doUpdate = false;
  2416.  
  2417.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  2418.  
  2419.             if (!participants00.r94dm) {
  2420.               participants00.r94dm = 1;
  2421.               if (++r95dm > 1e9) r95dm = 9;
  2422.               participants00.push = function () {
  2423.                 if (++r95dm > 1e9) r95dm = 9;
  2424.                 return Array.prototype.push.apply(this, arguments);
  2425.               }
  2426.               participants00.pop = function () {
  2427.                 if (++r95dm > 1e9) r95dm = 9;
  2428.                 return Array.prototype.pop.apply(this, arguments);
  2429.               }
  2430.               participants00.shift = function () {
  2431.                 if (++r95dm > 1e9) r95dm = 9;
  2432.                 return Array.prototype.shift.apply(this, arguments);
  2433.               }
  2434.               participants00.unshift = function () {
  2435.                 if (++r95dm > 1e9) r95dm = 9;
  2436.                 return Array.prototype.unshift.apply(this, arguments);
  2437.               }
  2438.               participants00.splice = function () {
  2439.                 if (++r95dm > 1e9) r95dm = 9;
  2440.                 return Array.prototype.splice.apply(this, arguments);
  2441.               }
  2442.               participants00.sort = function () {
  2443.                 if (++r95dm > 1e9) r95dm = 9;
  2444.                 return Array.prototype.sort.apply(this, arguments);
  2445.               }
  2446.               participants00.reverse = function () {
  2447.                 if (++r95dm > 1e9) r95dm = 9;
  2448.                 return Array.prototype.reverse.apply(this, arguments);
  2449.               }
  2450.             }
  2451.  
  2452.             if (c95dm !== r95dm) {
  2453.               c95dm = r95dm;
  2454.               doUpdate = true;
  2455.             }
  2456.  
  2457.           } else {
  2458.             doUpdate = true;
  2459.           }
  2460.  
  2461.           if (!doUpdate) {
  2462.             lockResolve();
  2463.             return;
  2464.           }
  2465.  
  2466.           const participants = participants00.slice(0);
  2467.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  2468.           beforeParticipantsMap.set(cnt, participants);
  2469.  
  2470.           const resPromise = (async () => {
  2471.  
  2472.             if (beforeParticipants.length === 0) {
  2473.               // not error
  2474.               return 0;
  2475.             }
  2476.  
  2477.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  2478.  
  2479.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  2480.             if (beforeParticipants.length !== countOfElements) {
  2481.               // there is somewrong for the cache. - sometimes happen
  2482.               return 0;
  2483.             }
  2484.  
  2485.             const idsBefore = convertToIds(beforeParticipants);
  2486.             const idsAfter = convertToIds(participants);
  2487.  
  2488.             let { indexSplices, contentUpdates } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  2489.  
  2490.             let res = 1; // default 1 for no update
  2491.  
  2492.             if (indexSplices.length >= 1) {
  2493.  
  2494.  
  2495.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  2496.               // let p1 = indexSplices[0].removed;
  2497.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  2498.  
  2499.               /* folllow
  2500.                   a.notifyPath(c + ".splices", d);
  2501.                   a.notifyPath(c + ".length", b.length);
  2502.               */
  2503.               // stampDomArraySplices_
  2504.  
  2505.  
  2506.               await new Promise(resolve => {
  2507.                 cnt.resolveForDOMRendering781 = resolve;
  2508.  
  2509.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  2510.                   indexSplices
  2511.                 });
  2512.                 indexSplices = null;
  2513.                 participantsForSpliceWR = null;
  2514.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  2515.                   participants.length
  2516.                 );
  2517.  
  2518.               });
  2519.  
  2520.               // play safe for the change of 'length'
  2521.               if (typeof nextBrowserTick !== 'function') {
  2522.                 await Promise.resolve(0);
  2523.               } else {
  2524.                 await new Promise(resolve => nextBrowserTick(resolve)).then();
  2525.               }
  2526.  
  2527.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  2528.  
  2529.               const wrongSize = participants.length !== countOfElements
  2530.               if (wrongSize) {
  2531.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  2532.                 return 0;
  2533.               }
  2534.  
  2535.               res = 2 | 4;
  2536.  
  2537.             } else {
  2538.  
  2539.               indexSplices = null;
  2540.               participantsForSpliceWR = null;
  2541.  
  2542.               if (participants.length !== countOfElements) {
  2543.                 // other unhandled cases
  2544.                 return 0;
  2545.               }
  2546.  
  2547.             }
  2548.  
  2549.             // participants.length === countOfElements before contentUpdates
  2550.             if (contentUpdates.length >= 1) {
  2551.               for (const contentUpdate of contentUpdates) {
  2552.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  2553.                 if (isChanged) {
  2554.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  2555.                   res |= 4 | 8;
  2556.                 }
  2557.               }
  2558.             }
  2559.             contentUpdates = null;
  2560.  
  2561.             return res;
  2562.  
  2563.  
  2564.           })();
  2565.  
  2566.  
  2567.           resPromise.then(resValue => {
  2568.  
  2569.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  2570.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  2571.             if (resValue === 0) {
  2572.               new Promise(resolve => {
  2573.                 cnt.resolveForDOMRendering781 = resolve;
  2574.                 isLogRequired && console.log("Full Refresh begins");
  2575.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  2576.               }).then(() => {
  2577.                 isLogRequired && console.log("Full Refresh ends");
  2578.                 console.groupEnd();
  2579.               }).then(lockResolve);
  2580.               return;
  2581.             }
  2582.  
  2583.             const delayLockResolve = (resValue & 4) === 4;
  2584.  
  2585.             if (delayLockResolve) {
  2586.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  2587.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  2588.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  2589.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  2590.               isLogRequired && console.groupEnd();
  2591.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2592.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2593.               requestAnimationFrame(lockResolve);
  2594.             } else {
  2595.               lockResolve();
  2596.             }
  2597.  
  2598.           });
  2599.  
  2600.         });
  2601.  
  2602.       }
  2603.  
  2604.       return { notifyPath7081 };
  2605.  
  2606.     })();
  2607.  
  2608.     const whenDefinedMultiple = async (tags) => {
  2609.  
  2610.       const sTags = [...new Set(tags)];
  2611.       const len = sTags.length;
  2612.  
  2613.       const pTags = new Array(len);
  2614.       for (let i = 0; i < len; i++) {
  2615.         pTags[i] = customElements.whenDefined(sTags[i]);
  2616.       }
  2617.  
  2618.       await Promise.all(pTags);
  2619.       pTags.length = 0;
  2620.  
  2621.       return sTags;
  2622.  
  2623.     }
  2624.  
  2625.     const onRegistryReadyForDataManipulation = () => {
  2626.  
  2627.       function dummy5035(a, b, c) { }
  2628.       function dummy411(a, b, c) { }
  2629.  
  2630.  
  2631.  
  2632.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2633.  
  2634.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2635.  
  2636.         const tag = "yt-live-chat-participant-list-renderer";
  2637.         const cProto = getProto(document.createElement(tag));
  2638.         if (!cProto || typeof cProto.attached !== 'function') {
  2639.           // for _registered, proto.attached shall exist when the element is defined.
  2640.           // for controller extraction, attached shall exist when instance creates.
  2641.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2642.           return;
  2643.         }
  2644.  
  2645.  
  2646.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2647.  
  2648.         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'];
  2649.         const fgs = {};
  2650.         for (const key of fgsArr) fgs[key] = undefined;
  2651.  
  2652.         try {
  2653.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2654.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2655.         } catch (e) { }
  2656.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2657.  
  2658.         const canDoReplacement = (() => {
  2659.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2660.             console.warn('YouTube Live Chat Tamer is running.');
  2661.             return;
  2662.           }
  2663.  
  2664.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2665.             console.warn('YouTube Live Chat Tamer is running.');
  2666.             return;
  2667.           }
  2668.  
  2669.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2670.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2671.  
  2672.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2673.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2674.             return;
  2675.           }
  2676.  
  2677.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2678.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2679.             return;
  2680.           }
  2681.  
  2682.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2683.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2684.             return;
  2685.           }
  2686.           return true;
  2687.         })();
  2688.  
  2689.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2690.  
  2691.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2692.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2693.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2694.           const s = fiRSCB.split('.');
  2695.           // Feb 2024: 0.403.247 => NG
  2696.           // if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2697.           //   console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2698.           // } else {
  2699.           //   console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2700.           // }
  2701.           console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ###`);
  2702.         } else {
  2703.           console.log("flushRenderStamperComponentBindings_ - not found");
  2704.         }
  2705.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2706.  
  2707.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2708.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2709.           cProto.flushRenderStamperComponentBindings_ = function () {
  2710.             // console.log('flushRenderStamperComponentBindings_')
  2711.             this.flushRenderStamperComponentBindings66_();
  2712.             if (this.resolveForDOMRendering781) {
  2713.               this.resolveForDOMRendering781();
  2714.               this.resolveForDOMRendering781 = null;
  2715.             }
  2716.           };
  2717.         }
  2718.  
  2719.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2720.           const container = ((this || 0).$ || 0).participants;
  2721.           if (!container) return 0;
  2722.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2723.         }
  2724.  
  2725.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2726.  
  2727.         cProto.__attached412__ = cProto.attached;
  2728.         const fpPList = function (hostElement) {
  2729.           const cnt = insp(hostElement);
  2730.           if (beforeParticipantsMap.has(cnt)) return;
  2731.           hostElement.classList.add('n9fJ3');
  2732.  
  2733.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2734.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2735.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2736.             return;
  2737.           }
  2738.  
  2739.           groupCollapsed("Participant List attached", "");
  2740.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2741.           //   console.log(123, 'appendChild');
  2742.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2743.           // }
  2744.  
  2745.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2746.           //   console.log(123, 'insertBefore');
  2747.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2748.           // }
  2749.  
  2750.           cnt.__notifyPath5036__ = cnt.notifyPath
  2751.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2752.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2753.           console.log(`initial number of participants: ${participants.length}`);
  2754.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2755.           beforeParticipantsMap.set(cnt, newParticipants);
  2756.           cnt.notifyPath = notifyPath7081;
  2757.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2758.           console.groupEnd();
  2759.         }
  2760.         cProto.attached = function () {
  2761.           fpPList(this.hostElement || this);
  2762.           this.__attached412__.apply(this, arguments);
  2763.         };
  2764.  
  2765.  
  2766.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2767.  
  2768.           /** @type {boolean | (()=>boolean)} */
  2769.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2770.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2771.  
  2772.             let lastMessageDate = 0;
  2773.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2774.  
  2775.             cProto.stampDomArray_ = function (...args) {
  2776.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2777.                 if (typeof toUseMaintainStableList === 'function') {
  2778.                   toUseMaintainStableList = toUseMaintainStableList();
  2779.                 }
  2780.                 args[5] = toUseMaintainStableList;
  2781.                 let currentDate = Date.now();
  2782.                 if (currentDate - lastMessageDate > 440) {
  2783.                   lastMessageDate = currentDate;
  2784.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2785.                 }
  2786.               }
  2787.               return this.stampDomArray66_.apply(this, args);
  2788.             }
  2789.  
  2790.             cProto.stampDomArray_.nIegT = 1;
  2791.  
  2792.           }
  2793.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2794.         } else {
  2795.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2796.         }
  2797.  
  2798.         console.groupEnd();
  2799.  
  2800.         if (onPageElements.length >= 1) {
  2801.           for (const s of onPageElements) {
  2802.             if (insp(s).isAttached === true) {
  2803.               fpPList(s);
  2804.             }
  2805.           }
  2806.         }
  2807.  
  2808.       }).catch(console.warn);
  2809.  
  2810.     };
  2811.  
  2812.     if (DO_PARTICIPANT_LIST_HACKS) {
  2813.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2814.     }
  2815.  
  2816.  
  2817.  
  2818.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2819.  
  2820.  
  2821.     const fixChildrenIssue = !!fixChildrenIssue801;
  2822.     if (fixChildrenIssue && typeof Object.getOwnPropertyDescriptor === 'function' && typeof Proxy !== 'undefined') {
  2823.       const divProto = HTMLDivElement.prototype;
  2824.       const polymerControllerSetData3 = function (c, d, e) {
  2825.         return insp(this).set(c, d, e);
  2826.       }
  2827.       const polymerControllerSetData2 = function (c, d) {
  2828.         return insp(this).set(c, d);
  2829.       }
  2830.       const dummyFn = function () {
  2831.         console.log('dummyFn', ...arguments);
  2832.       };
  2833.  
  2834.       const wm44 = new Map();
  2835.       function unPolymerSet(elem) {
  2836.         const is = elem.is;
  2837.         if (is && !elem.set) {
  2838.           let rt = wm44.get(is);
  2839.           if (!rt) {
  2840.             rt = 1;
  2841.             const cnt = insp(elem);
  2842.             if (cnt !== elem && cnt && typeof cnt.set === 'function') {
  2843.               const pcSet = cnt.constructor.prototype.set;
  2844.               if (pcSet && typeof pcSet === 'function' && pcSet.length === 3) {
  2845.                 rt = polymerControllerSetData3;
  2846.               } else if (pcSet && typeof pcSet === 'function' && pcSet.length === 2) {
  2847.                 rt = polymerControllerSetData2;
  2848.               }
  2849.             }
  2850.             wm44.set(is, rt);
  2851.           }
  2852.           if (typeof rt === 'function') {
  2853.             elem.set = rt;
  2854.           } else {
  2855.             elem.set = dummyFn;
  2856.           }
  2857.         }
  2858.       }
  2859.       if (!divProto.__children577__ && !divProto.__children578__) {
  2860.  
  2861.         const dp = Object.getOwnPropertyDescriptor(Element.prototype, 'children');
  2862.         const dp2 = Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'children');
  2863.         const dp3 = Object.getOwnPropertyDescriptor(divProto, 'children');
  2864.  
  2865.         if (dp && dp.configurable === true && dp.enumerable === true && typeof dp.get === 'function' && !dp2 && !dp3) {
  2866.  
  2867.           if (divProto instanceof HTMLElement && divProto instanceof Element) {
  2868.  
  2869.             let m = Object.assign({}, dp);
  2870.             divProto.__children577__ = dp.get;
  2871.             divProto.__children578__ = function () {
  2872.               if (this.__children803__) return this.__children803__;
  2873.               if (this.__children801__) {
  2874.                 let arr = [];
  2875.                 for (let elem = this.firstElementChild; elem !== null; elem = elem.nextElementSibling) {
  2876.                   if (elem.is) {
  2877.                     unPolymerSet(elem);
  2878.                     arr.push(elem);
  2879.                   }
  2880.                 }
  2881.                 if (this.__children801__ === 2) this.__children803__ = arr;
  2882.                 return arr;
  2883.               }
  2884.               return 577;
  2885.             };
  2886.             m.get = function () {
  2887.               const r = this.__children578__();
  2888.               if (r !== 577) return r;
  2889.               return this.__children577__();
  2890.             };
  2891.             Object.defineProperty(divProto, 'children', m);
  2892.  
  2893.             console.log('fixChildrenIssue - set OK')
  2894.  
  2895.           }
  2896.         }
  2897.  
  2898.       }
  2899.  
  2900.  
  2901.     }
  2902.  
  2903.  
  2904.     const bnForDelayChatOccurrence = () => {
  2905.  
  2906.       document.addEventListener('animationstart', (evt) => {
  2907.  
  2908.         if (evt.animationName === 'dontRenderAnimation') {
  2909.           evt.target.classList.remove('dont-render');
  2910.           if (scrollChatFn) scrollChatFn();
  2911.         }
  2912.  
  2913.       }, true);
  2914.  
  2915.       const f = (elm) => {
  2916.         if (elm && elm.nodeType === 1) {
  2917.           if (!skipDontRender && allowDontRender === true) {
  2918.             // innerTextFixFn();
  2919.             elm.classList.add('dont-render');
  2920.           }
  2921.         }
  2922.       }
  2923.  
  2924.       Node.prototype.__appendChild931__ = function (a) {
  2925.         a = dr(a);
  2926.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2927.           if (a && a.nodeType === 1) f(a);
  2928.           else if (a instanceof DocumentFragment) {
  2929.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2930.               f(n);
  2931.             }
  2932.           }
  2933.         }
  2934.       }
  2935.  
  2936.       Node.prototype.__appendChild932__ = function () {
  2937.         this.__appendChild931__.apply(this, arguments);
  2938.         return Node.prototype.appendChild.apply(this, arguments);
  2939.       }
  2940.  
  2941.  
  2942.     };
  2943.  
  2944.     const watchUserCSS = () => {
  2945.  
  2946.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2947.  
  2948.       const getElemFromWR = (nr) => {
  2949.         const n = kRef(nr);
  2950.         if (n && n.isConnected) return n;
  2951.         return null;
  2952.       }
  2953.  
  2954.       const clearContentVisibilitySizing = () => {
  2955.         Promise.resolve().then(() => {
  2956.  
  2957.           const e = document.querySelector('#show-more[disabled]');
  2958.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2959.  
  2960.           let lastVisibleItemWR = null;
  2961.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2962.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2963.             elm.setAttribute('wSr93', '');
  2964.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2965.           }
  2966.           foregroundPromiseFn().then(() => {
  2967.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2968.             if (btnShowMore) btnShowMore.click();
  2969.             else {
  2970.               // would not work if switch it frequently
  2971.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2972.               if (lastVisibleItem) {
  2973.  
  2974.                 Promise.resolve()
  2975.                   .then(() => lastVisibleItem.scrollIntoView())
  2976.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2977.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2978.                   .catch(e => { }) // break the chain when method not callable
  2979.  
  2980.               }
  2981.             }
  2982.           });
  2983.  
  2984.         });
  2985.  
  2986.       }
  2987.  
  2988.       const mutObserver = new MutationObserver((mutations) => {
  2989.         for (const mutation of mutations) {
  2990.           if ((mutation.addedNodes || 0).length >= 1) {
  2991.             for (const addedNode of mutation.addedNodes) {
  2992.               if (addedNode.nodeName === 'STYLE') {
  2993.                 clearContentVisibilitySizing();
  2994.                 return;
  2995.               }
  2996.             }
  2997.           }
  2998.           if ((mutation.removedNodes || 0).length >= 1) {
  2999.             for (const removedNode of mutation.removedNodes) {
  3000.               if (removedNode.nodeName === 'STYLE') {
  3001.                 clearContentVisibilitySizing();
  3002.                 return;
  3003.               }
  3004.             }
  3005.           }
  3006.         }
  3007.       });
  3008.  
  3009.       mutObserver.observe(document.documentElement, {
  3010.         childList: true,
  3011.         subtree: false
  3012.       });
  3013.       mutObserver.observe(document.head, {
  3014.         childList: true,
  3015.         subtree: false
  3016.       });
  3017.       mutObserver.observe(document.body, {
  3018.         childList: true,
  3019.         subtree: false
  3020.       });
  3021.  
  3022.     }
  3023.  
  3024.  
  3025.     class WillChangeController {
  3026.       constructor(itemScroller, willChangeValue) {
  3027.         this.element = itemScroller;
  3028.         this.counter = 0;
  3029.         this.active = false;
  3030.         this.willChangeValue = willChangeValue;
  3031.       }
  3032.  
  3033.       beforeOper() {
  3034.         if (!this.active) {
  3035.           this.active = true;
  3036.           this.element.style.willChange = this.willChangeValue;
  3037.         }
  3038.         this.counter++;
  3039.       }
  3040.  
  3041.       afterOper() {
  3042.         const c = this.counter;
  3043.         foregroundPromiseFn().then(() => {
  3044.           if (c === this.counter) {
  3045.             this.active = false;
  3046.             this.element.style.willChange = '';
  3047.           }
  3048.         });
  3049.       }
  3050.  
  3051.       release() {
  3052.         const element = this.element;
  3053.         this.element = null;
  3054.         this.counter = 1e16;
  3055.         this.active = false;
  3056.         try {
  3057.           element.style.willChange = '';
  3058.         } catch (e) { }
  3059.       }
  3060.  
  3061.     }
  3062.  
  3063.  
  3064.     const skzData = (skz) => skz.data = {
  3065.       "message": {
  3066.         "runs": [
  3067.           {
  3068.             "text": "em2o"
  3069.           },
  3070.           {
  3071.             "emoji": {
  3072.               "emojiId": "cm35z",
  3073.               "shortcuts": [
  3074.                 ":_s:",
  3075.                 ":s:"
  3076.               ],
  3077.               "searchTerms": [
  3078.                 "_s",
  3079.                 "s"
  3080.               ],
  3081.               "image": {
  3082.                 "thumbnails": [
  3083.                   {
  3084.                     "url": dummyImgURL,
  3085.                     "width": 48,
  3086.                     "height": 48
  3087.                   }
  3088.                 ],
  3089.                 "accessibility": {
  3090.                   "accessibilityData": {
  3091.                     "label": "s"
  3092.                   }
  3093.                 }
  3094.               },
  3095.               "isCustomEmoji": true
  3096.             }
  3097.           },
  3098.           {
  3099.             "text": "ji"
  3100.           }
  3101.         ]
  3102.       },
  3103.       "authorName": {
  3104.         "simpleText": "N"
  3105.       },
  3106.       "authorPhoto": {
  3107.         "thumbnails": [
  3108.           {
  3109.             "url": dummyImgURL,
  3110.             "width": 64,
  3111.             "height": 64
  3112.           }
  3113.         ]
  3114.       },
  3115.       "contextMenuEndpoint": {
  3116.         "commandMetadata": {
  3117.           "webCommandMetadata": {
  3118.             "ignoreNavigation": true
  3119.           }
  3120.         },
  3121.         "liveChatItemContextMenuEndpoint": {
  3122.           "params": "123=="
  3123.         }
  3124.       },
  3125.       "id": "sk35z",
  3126.       "timestampUsec": "1232302352350000",
  3127.       "authorBadges": [
  3128.         {
  3129.           "liveChatAuthorBadgeRenderer": {
  3130.             "customThumbnail": {
  3131.               "thumbnails": [
  3132.                 {
  3133.                   "url": dummyImgURL,
  3134.                   "width": 16,
  3135.                   "height": 16
  3136.                 },
  3137.                 {
  3138.                   "url": dummyImgURL,
  3139.                   "width": 32,
  3140.                   "height": 32
  3141.                 }
  3142.               ]
  3143.             },
  3144.             "tooltip": "T",
  3145.             "accessibility": {
  3146.               "accessibilityData": {
  3147.                 "label": "E"
  3148.               }
  3149.             }
  3150.           }
  3151.         }
  3152.       ],
  3153.       "authorExternalChannelId": "A",
  3154.       "contextMenuAccessibility": {
  3155.         "accessibilityData": {
  3156.           "label": "E"
  3157.         }
  3158.       },
  3159.       "timestampText": {
  3160.         "simpleText": "0:43"
  3161.       }
  3162.     };
  3163.  
  3164.  
  3165.  
  3166.     const { lcRendererElm, visObserver } = (() => {
  3167.  
  3168.  
  3169.  
  3170.       let lcRendererWR = null;
  3171.  
  3172.       const lcRendererElm = () => {
  3173.         let lcRenderer = kRef(lcRendererWR);
  3174.         if (!lcRenderer || !lcRenderer.isConnected) {
  3175.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  3176.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  3177.         }
  3178.         return lcRenderer;
  3179.       };
  3180.  
  3181.  
  3182.       let hasFirstShowMore = false;
  3183.  
  3184.       const visObserverFn = (entry) => {
  3185.  
  3186.         const target = entry.target;
  3187.         if (!target) return;
  3188.         // if(target.classList.contains('dont-render')) return;
  3189.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  3190.         // const h = entry.boundingClientRect.height;
  3191.         /*
  3192.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  3193.             // e.g. under fullscreen. the element created but not rendered.
  3194.             target.setAttribute('wSr93', '');
  3195.             return;
  3196.         }
  3197.         */
  3198.         if (isVisible) {
  3199.           // target.style.setProperty('--wsr94', h + 'px');
  3200.           target.setAttribute('wSr93', 'visible');
  3201.           if (nNextElem(target) === null) {
  3202.  
  3203.             // firstVisibleItemDetected = true;
  3204.             /*
  3205.               if (dateNow() - lastScroll < 80) {
  3206.                   lastLShow = 0;
  3207.                   lastScroll = 0;
  3208.                   Promise.resolve().then(clickShowMore);
  3209.               } else {
  3210.                   lastLShow = dateNow();
  3211.               }
  3212.               */
  3213.             // lastLShow = dateNow();
  3214.           } else if (!hasFirstShowMore) { // should more than one item being visible
  3215.             // implement inside visObserver to ensure there is sufficient delay
  3216.             hasFirstShowMore = true;
  3217.             foregroundPromiseFn().then(() => {
  3218.               // foreground page
  3219.               // page visibly ready -> load the latest comments at initial loading
  3220.               const lcRenderer = lcRendererElm();
  3221.               if (lcRenderer) {
  3222.                 if (typeof nextBrowserTick !== 'function') {
  3223.                   insp(lcRenderer).scrollToBottom_();
  3224.                 } else {
  3225.                   nextBrowserTick(() => {
  3226.                     const cnt = insp(lcRenderer);
  3227.                     if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3228.                     cnt.scrollToBottom_();
  3229.                   });
  3230.                 }
  3231.               }
  3232.             });
  3233.           }
  3234.         }
  3235.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  3236.  
  3237.           // target.style.setProperty('--wsr94', h + 'px');
  3238.           target.setAttribute('wSr93', 'hidden');
  3239.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  3240.  
  3241.       }
  3242.  
  3243.  
  3244.  
  3245.       const visObserver = new IntersectionObserver((entries) => {
  3246.  
  3247.         for (const entry of entries) {
  3248.  
  3249.           Promise.resolve(entry).then(visObserverFn);
  3250.  
  3251.         }
  3252.  
  3253.       }, {
  3254.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  3255.         rootMargin: "0px",
  3256.         threshold: [0.05, 0.95],
  3257.       });
  3258.  
  3259.  
  3260.       return { lcRendererElm, visObserver }
  3261.  
  3262.  
  3263.     })();
  3264.  
  3265.     const { setupMutObserver } = (() => {
  3266.  
  3267.       async function asyncTickerBackgroundOverridedChecker() {
  3268.  
  3269.         try {
  3270.           await promiseForCustomYtElementsReady.then();
  3271.           await customElements.whenDefined('yt-live-chat-text-message-renderer');
  3272.           await new Promise(r => setTimeout(r, 800));
  3273.  
  3274.           if (!hasTimerModified) return;
  3275.           const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  3276.           if (!tickerRenderer) return;
  3277.  
  3278.           const tickerRendererDollar = indr(tickerRenderer);
  3279.           const items = (tickerRendererDollar || 0).items || 0;
  3280.           if (!items) return;
  3281.           const template = document.createElement('template');
  3282.           template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  3283.             modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  3284.             dimmed="" [dummy777]>
  3285.             <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  3286.               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));">
  3287.               <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  3288.                 <yt-img-shadow777 id="author-photo" height="24" width="24"
  3289.                   class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  3290.                   style="background-color: transparent;" loaded=""><img id="img"
  3291.                     draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  3292.                     src="${dummyImgURL}"></yt-img-shadow777>
  3293.  
  3294.                 <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  3295.               </div>
  3296.             </div>
  3297.           </yt-live-chat-ticker-dummy777-item-renderer>`;
  3298.           const dummy777 = template.content.firstElementChild;
  3299.           await Promise.resolve().then();
  3300.           let res = 0;
  3301.           if (items instanceof HTMLElement && items.isConnected === true) {
  3302.             try {
  3303.               items.appendChild(dummy777);
  3304.               let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  3305.               if (container.isConnected === true) {
  3306.                 const evaluated = `${getComputedStyleCached(container).background}`;
  3307.                 container = null;
  3308.                 res = evaluated.indexOf('0.') < 4 ? 1 : 2;
  3309.               }
  3310.             } catch (e) { console.warn(e) }
  3311.             HTMLElement.prototype.remove.call(dummy777);
  3312.           }
  3313.           await Promise.resolve().then();
  3314.           dummy777.textContent = '';
  3315.           if (res === 1) {
  3316.             // not fulfilling
  3317.             // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3318.             console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3319.               "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3320.               "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3321.             );
  3322.             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');
  3323.             console.groupEnd();
  3324.             console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  3325.           } else if (res === 2) {
  3326.             console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3327.           }
  3328.         } catch (e) {
  3329.           console.warn(e);
  3330.         }
  3331.       }
  3332.  
  3333.       async function asyncDelayChatOccurrence(m2) {
  3334.         try {
  3335.           await promiseForCustomYtElementsReady.then();
  3336.           await customElements.whenDefined('yt-live-chat-text-message-renderer');
  3337.           await new Promise(r => setTimeout(r, 1));
  3338.           const dummy888 = document.createElement('yt-live-chat-text-message-renderer');
  3339.           // const template = document.createElement('template');
  3340.           // template.innerHTML = "<yt-live-chat-text-message-renderer></yt-live-chat-text-message-renderer>"
  3341.           // const dummy888 = template.content.firstElementChild;
  3342.           const skzCnt = insp(dummy888);
  3343.           if (!(skzCnt && 'data' in skzCnt && 'attached' in skzCnt)) {
  3344.             return;
  3345.           }
  3346.           if (!skzCnt.hostElement) skzCnt.hostElement = dummy888;
  3347.           /** @type {HTMLTemplateElement} */
  3348.           const skzElem = dummy888;
  3349.           let cz1 = null;
  3350.           const deferredZy1 = new Promise(resolve => {
  3351.             skzCnt.attached = function () {
  3352.               cz1 = HTMLElement.prototype.querySelector.call(skzElem, '#message img') !== null;
  3353.               resolve(skzElem.textContent);
  3354.             }
  3355.             skzCnt.detached = function () {
  3356.             }
  3357.           });
  3358.           skzElem.id = 'sk35z';
  3359.           skzData(skzCnt);
  3360.           sk35zResolveFn = null;
  3361.           const deferredMutation = new Promise(resolve => {
  3362.             sk35zResolveFn = resolve;
  3363.             HTMLElement.prototype.appendChild.call(m2, skzElem);
  3364.           });
  3365.           const [zy1, _] = await Promise.all([deferredZy1, deferredMutation]);
  3366.           skzCnt.attached = function () { };
  3367.           function fn() {
  3368.             const zy2 = skzElem.textContent;
  3369.             const cz2 = HTMLElement.prototype.querySelector.call(skzElem, '#message img') !== null;
  3370.             if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  3371.               allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  3372.             }
  3373.             if (allowDontRender === true) return true;
  3374.             if (allowDontRender === false) {
  3375.               console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3376.                 "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3377.                 "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3378.               );
  3379.               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');
  3380.               console.groupEnd();
  3381.             }
  3382.           }
  3383.           await new Promise(r => setTimeout(r, 1));
  3384.           if (!fn()) return;
  3385.           await foregroundPromiseFn().then();
  3386.           if (!fn()) return;
  3387.           skzElem.remove();
  3388.           await Promise.resolve().then();
  3389.           skzElem.textContent = '';
  3390.           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3391.         } catch (e) {
  3392.           console.warn(e);
  3393.         }
  3394.       }
  3395.  
  3396.       const mutFn = (items) => {
  3397.         let seqIndex = -1;
  3398.         const elementSet = new Set();
  3399.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  3400.           if (node.hasAttribute('wSr93')) {
  3401.             seqIndex = parseInt(node.getAttribute('yt-chat-item-seq'), 10);
  3402.             break;
  3403.           }
  3404.           node.setAttribute('wSr93', '');
  3405.           visObserver.observe(node);
  3406.           elementSet.add(node);
  3407.         }
  3408.         let iter = elementSet.values();
  3409.         let i = seqIndex + elementSet.size;
  3410.         for (let curr; curr = iter.next().value;) {
  3411.           curr.setAttribute('yt-chat-item-seq', i % 60);
  3412.           curr.classList.add('yt-chat-item-' + ((i % 2) ? 'odd' : 'even'));
  3413.           i--;
  3414.         }
  3415.         iter = null;
  3416.         elementSet.clear();
  3417.       }
  3418.  
  3419.       const mutObserver = new MutationObserver((mutations) => {
  3420.         const items = (mutations[0] || 0).target;
  3421.         if (!items) return;
  3422.         if (sk35zResolveFn) {
  3423.           sk35zResolveFn();
  3424.           sk35zResolveFn = null;
  3425.         }
  3426.         mutFn(items);
  3427.       });
  3428.  
  3429.       const setupMutObserver = (m2) => {
  3430.         scrollChatFn = null;
  3431.         mutObserver.disconnect();
  3432.         mutObserver.takeRecords();
  3433.         if (m2) {
  3434.           if (typeof m2.__appendChild932__ === 'function') {
  3435.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  3436.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  3437.           }
  3438.           mutObserver.observe(m2, {
  3439.             childList: true,
  3440.             subtree: false
  3441.           });
  3442.           mutFn(m2);
  3443.  
  3444.           const isFirstList = firstList;
  3445.           firstList = false;
  3446.  
  3447.           if (ENABLE_OVERFLOW_ANCHOR) {
  3448.  
  3449.             let items = m2;
  3450.             let addedAnchor = false;
  3451.             if (items) {
  3452.               if (items.nextElementSibling === null) {
  3453.                 items.classList.add('no-anchor');
  3454.                 addedAnchor = true;
  3455.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  3456.               }
  3457.             }
  3458.  
  3459.  
  3460.  
  3461.             if (addedAnchor) {
  3462.               nodeParent(m2).classList.add('no-anchor'); // required
  3463.             }
  3464.  
  3465.           }
  3466.  
  3467.  
  3468.  
  3469.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  3470.  
  3471.             (() => {
  3472.  
  3473.               const tag = 'yt-iframed-player-events-relay'
  3474.               const dummy = document.createElement(tag);
  3475.  
  3476.               const cProto = getProto(dummy);
  3477.               if (!cProto || !cProto.handlePostMessage_) {
  3478.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  3479.                 return;
  3480.               }
  3481.  
  3482.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  3483.  
  3484.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  3485.  
  3486.                 cProto.handlePostMessage67_ = function (a) {
  3487.  
  3488.                   const da = a.data;
  3489.  
  3490.  
  3491.  
  3492.                   playEventsStack = playEventsStack.then(() => {
  3493.  
  3494.  
  3495.  
  3496.                     if ('yt-player-state-change' in da) {
  3497.  
  3498.                       const qc = da['yt-player-state-change'];
  3499.  
  3500.  
  3501.                       let isQcChanged = false;
  3502.  
  3503.                       if (qc === 2) { isQcChanged = qc !== _playerState; _playerState = 2; relayCount = 0; } // paused
  3504.                       else if (qc === 3) { isQcChanged = qc !== _playerState; _playerState = 3; } // playing
  3505.                       else if (qc === 1) { isQcChanged = qc !== _playerState; _playerState = 1; } // playing
  3506.  
  3507.  
  3508.                       if ((isQcChanged) && playerState !== _playerState) {
  3509.                         playerEventsByIframeRelay = true;
  3510.                         onPlayStateChangePromise = new Promise((resolve) => {
  3511.                           let k = _playerState;
  3512.                           foregroundPromiseFn().then(() => {
  3513.                             if (k === _playerState && playerState !== _playerState) playerState = _playerState;
  3514.                             onPlayStateChangePromise = null;
  3515.                             resolve();
  3516.                           })
  3517.                         }).catch(console.warn);
  3518.  
  3519.                       }
  3520.  
  3521.                     } else if ('yt-player-video-progress' in da) {
  3522.                       const vp = da['yt-player-video-progress'];
  3523.  
  3524.  
  3525.                       relayCount++;
  3526.                       lastPlayerProgress = vp > 0 ? vp : 0;
  3527.  
  3528.  
  3529.                       if (relayPromise && vp > 0 && relayCount >= 2) {
  3530.                         if (onPlayStateChangePromise) {
  3531.                           onPlayStateChangePromise.then(() => {
  3532.                             relayPromise && relayPromise.resolve();
  3533.                             relayPromise = null;
  3534.                           })
  3535.                         } else {
  3536.                           relayPromise.resolve();
  3537.                           relayPromise = null;
  3538.                         }
  3539.                       }
  3540.  
  3541.                     }
  3542.  
  3543.                     return this.handlePostMessage66_(a);
  3544.  
  3545.                   }).catch(console.warn);
  3546.  
  3547.                 }
  3548.  
  3549.                 cProto.handlePostMessage_ = function (a) {
  3550.  
  3551.                   const da = (a || 0).data || 0;
  3552.  
  3553.                   if (typeof da !== 'object') return;
  3554.  
  3555.                   if (waitForInitialDataCompletion === 1) return;
  3556.  
  3557.                   if (!isPlayProgressTriggered) {
  3558.                     isPlayProgressTriggered = true;
  3559.  
  3560.                     if ('yt-player-video-progress' in da) {
  3561.                       waitForInitialDataCompletion = 1;
  3562.  
  3563.                       const wrapWith = (data) => {
  3564.                         const { origin } = a;
  3565.                         return {
  3566.                           origin,
  3567.                           data
  3568.                         };
  3569.                       }
  3570.  
  3571.                       this.handlePostMessage67_(wrapWith({
  3572.                         "yt-iframed-parent-ready": true
  3573.                       }));
  3574.  
  3575.                       playEventsStack = playEventsStack.then(() => {
  3576.  
  3577.                         const lcr = document.querySelector('yt-live-chat-renderer');
  3578.                         const psc = document.querySelector("yt-player-seek-continuation");
  3579.                         if (lcr && psc && lcr.replayBuffer_) {
  3580.  
  3581.                           const rbProgress = lcr.replayBuffer_.lastVideoOffsetTimeMsec;
  3582.                           const daProgress = da['yt-player-video-progress'] * 1000
  3583.                           // document.querySelector('yt-live-chat-renderer').playerProgressChanged_(1e-5);
  3584.  
  3585.                           const front_ = (lcr.replayBuffer_.replayQueue || 0).front_;
  3586.                           const back_ = (lcr.replayBuffer_.replayQueue || 0).back_;
  3587.  
  3588.                           // console.log(deepCopy( front_))
  3589.                           // console.log(deepCopy( back_))
  3590.                           // console.log(rbProgress, daProgress, )
  3591.                           if (front_ && back_ && rbProgress > daProgress && back_.length > 2 && back_.some(e => e && +e.videoOffsetTimeMsec > daProgress) && back_.some(e => e && +e.videoOffsetTimeMsec < daProgress)) {
  3592.                             // no action
  3593.                             // console.log('ss1')
  3594.                           } else if (rbProgress < daProgress + 3400 && rbProgress > daProgress - 1200) {
  3595.                             //  daProgress - 1200 < rbProgress < daProgress + 3400
  3596.                             // console.log('ss2')
  3597.                           } else {
  3598.  
  3599.                             lcr.previousProgressSec = 1E-5;
  3600.                             // lcr._setIsSeeking(!0),
  3601.                             lcr.replayBuffer_.clear()
  3602.                             psc.fireSeekContinuation_(da['yt-player-video-progress']);
  3603.                           }
  3604.  
  3605.                         }
  3606.  
  3607.                         waitForInitialDataCompletion = 2;
  3608.  
  3609.                         this.handlePostMessage_(a);
  3610.  
  3611.                       }).catch(console.warn);
  3612.  
  3613.                       return;
  3614.  
  3615.                     }
  3616.  
  3617.                   }
  3618.  
  3619.  
  3620.  
  3621.                   this.handlePostMessage67_(a);
  3622.  
  3623.  
  3624.  
  3625.                 }
  3626.  
  3627.               }
  3628.  
  3629.  
  3630.             })();
  3631.  
  3632.           }
  3633.  
  3634.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  3635.             asyncTickerBackgroundOverridedChecker();
  3636.           }
  3637.  
  3638.         }
  3639.       }
  3640.  
  3641.       return { setupMutObserver };
  3642.  
  3643.  
  3644.  
  3645.     })();
  3646.  
  3647.     const setupEvents = () => {
  3648.  
  3649.  
  3650.       let scrollCount = 0;
  3651.  
  3652.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  3653.  
  3654.  
  3655.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  3656.  
  3657.         const lcRenderer = lcRendererElm();
  3658.         if (lcRenderer) {
  3659.           const cnt = insp(lcRenderer);
  3660.           if (!cnt.hasUserJustInteracted11_) return;
  3661.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  3662.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  3663.           }
  3664.         }
  3665.  
  3666.       }
  3667.  
  3668.       document.addEventListener('scroll', (evt) => {
  3669.         if (!evt || !evt.isTrusted) return;
  3670.         // lastScroll = dateNow();
  3671.         if (++scrollCount > 1e9) scrollCount = 9;
  3672.       }, passiveCapture); // support contain => support passive
  3673.  
  3674.       let lastScrollCount = -1;
  3675.       document.addEventListener('wheel', (evt) => {
  3676.         if (!evt || !evt.isTrusted) return;
  3677.         if (lastScrollCount === scrollCount) return;
  3678.         lastScrollCount = scrollCount;
  3679.         lastWheel = dateNow();
  3680.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3681.       }, passiveCapture); // support contain => support passive
  3682.  
  3683.       document.addEventListener('mousedown', (evt) => {
  3684.         if (!evt || !evt.isTrusted) return;
  3685.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3686.         lastMouseDown = dateNow();
  3687.         currentMouseDown = true;
  3688.         lastUserInteraction = lastMouseDown;
  3689.       }, passiveCapture);
  3690.  
  3691.       document.addEventListener('pointerdown', (evt) => {
  3692.         if (!evt || !evt.isTrusted) return;
  3693.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3694.         lastMouseDown = dateNow();
  3695.         currentMouseDown = true;
  3696.         lastUserInteraction = lastMouseDown;
  3697.       }, passiveCapture);
  3698.  
  3699.       document.addEventListener('click', (evt) => {
  3700.         if (!evt || !evt.isTrusted) return;
  3701.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3702.         lastMouseDown = lastMouseUp = dateNow();
  3703.         currentMouseDown = false;
  3704.         lastUserInteraction = lastMouseDown;
  3705.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3706.       }, passiveCapture);
  3707.  
  3708.       document.addEventListener('tap', (evt) => {
  3709.         if (!evt || !evt.isTrusted) return;
  3710.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3711.         lastMouseDown = lastMouseUp = dateNow();
  3712.         currentMouseDown = false;
  3713.         lastUserInteraction = lastMouseDown;
  3714.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3715.       }, passiveCapture);
  3716.  
  3717.  
  3718.       document.addEventListener('mouseup', (evt) => {
  3719.         if (!evt || !evt.isTrusted) return;
  3720.         if (currentMouseDown) {
  3721.           lastMouseUp = dateNow();
  3722.           currentMouseDown = false;
  3723.           lastUserInteraction = lastMouseUp;
  3724.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3725.         }
  3726.       }, passiveCapture);
  3727.  
  3728.  
  3729.       document.addEventListener('pointerup', (evt) => {
  3730.         if (!evt || !evt.isTrusted) return;
  3731.         if (currentMouseDown) {
  3732.           lastMouseUp = dateNow();
  3733.           currentMouseDown = false;
  3734.           lastUserInteraction = lastMouseUp;
  3735.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3736.         }
  3737.       }, passiveCapture);
  3738.  
  3739.       document.addEventListener('touchstart', (evt) => {
  3740.         if (!evt || !evt.isTrusted) return;
  3741.         lastTouchDown = dateNow();
  3742.         currentTouchDown = true;
  3743.         lastUserInteraction = lastTouchDown;
  3744.       }, passiveCapture);
  3745.  
  3746.       document.addEventListener('touchmove', (evt) => {
  3747.         if (!evt || !evt.isTrusted) return;
  3748.         lastTouchDown = dateNow();
  3749.         currentTouchDown = true;
  3750.         lastUserInteraction = lastTouchDown;
  3751.       }, passiveCapture);
  3752.  
  3753.       document.addEventListener('touchend', (evt) => {
  3754.         if (!evt || !evt.isTrusted) return;
  3755.         if (currentTouchDown) {
  3756.           lastTouchUp = dateNow();
  3757.           currentTouchDown = false;
  3758.           lastUserInteraction = lastTouchUp;
  3759.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3760.         }
  3761.       }, passiveCapture);
  3762.  
  3763.       document.addEventListener('touchcancel', (evt) => {
  3764.         if (!evt || !evt.isTrusted) return;
  3765.         if (currentTouchDown) {
  3766.           lastTouchUp = dateNow();
  3767.           currentTouchDown = false;
  3768.           lastUserInteraction = lastTouchUp;
  3769.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3770.         }
  3771.       }, passiveCapture);
  3772.  
  3773.  
  3774.     }
  3775.  
  3776.     const getTimestampUsec = (itemRenderer) => {
  3777.       if (itemRenderer && 'timestampUsec' in itemRenderer) {
  3778.         return itemRenderer.timestampUsec
  3779.       } else if (itemRenderer && itemRenderer.showItemEndpoint) {
  3780.         const messageRenderer = ((itemRenderer.showItemEndpoint.showLiveChatItemEndpoint || 0).renderer || 0);
  3781.         if (messageRenderer) {
  3782.  
  3783.           const messageRendererKey = firstObjectKey(messageRenderer);
  3784.           if (messageRendererKey && messageRenderer[messageRendererKey]) {
  3785.             const messageRendererData = messageRenderer[messageRendererKey];
  3786.             if (messageRendererData && 'timestampUsec' in messageRendererData) {
  3787.               return messageRendererData.timestampUsec
  3788.             }
  3789.           }
  3790.         }
  3791.       }
  3792.       return null;
  3793.     }
  3794.  
  3795.     const onRegistryReadyForDOMOperations = () => {
  3796.  
  3797.       let firstCheckedOnYtInit = false;
  3798.  
  3799.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  3800.  
  3801.       const mightFirstCheckOnYtInit = () => {
  3802.         if (firstCheckedOnYtInit) return;
  3803.         firstCheckedOnYtInit = true;
  3804.  
  3805.         if (!document.body || !document.head) return;
  3806.         if (!assertorURL()) return;
  3807.  
  3808.         addCssManaged();
  3809.  
  3810.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  3811.         if (efsContainer && efsContainer.parentNode !== document.body) {
  3812.           document.body.appendChild(efsContainer);
  3813.         }
  3814.  
  3815.       };
  3816.  
  3817.       if (!assertorURL()) return;
  3818.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3819.  
  3820.       if (document.documentElement && document.head) {
  3821.         addCssManaged();
  3822.       }
  3823.       // console.log(document.body===null)
  3824.  
  3825.       if (ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION) {
  3826.         getLCRDummy().then(async (lcrDummy) => {
  3827.  
  3828.           const tag = "yt-live-chat-renderer"
  3829.           const dummy = lcrDummy;
  3830.  
  3831.           const cProto = getProto(dummy);
  3832.           if (!cProto || !cProto.attached) {
  3833.             console.warn(`proto.attached for ${tag} is unavailable.`);
  3834.             return;
  3835.           }
  3836.  
  3837.           mightFirstCheckOnYtInit();
  3838.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-renderer hacks");
  3839.           console.log("[Begin]");
  3840.  
  3841.  
  3842.  
  3843.  
  3844.  
  3845.  
  3846.           if (typeof cProto.playerProgressChanged_ === 'function' && !cProto.playerProgressChanged32_) {
  3847.  
  3848.             cProto.playerProgressChanged32_ = cProto.playerProgressChanged_;
  3849.  
  3850.             const pop078 = function () {
  3851.               const r = this.pop78();
  3852.  
  3853.               if (r && (r.actions || 0).length >= 1 && r.videoOffsetTimeMsec) {
  3854.                 for (const action of r.actions) {
  3855.  
  3856.                   const itemActionKey = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3857.                   if (itemActionKey) {
  3858.  
  3859.                     const itemAction = action[itemActionKey];
  3860.                     const item = (itemAction || 0).item;
  3861.                     if (typeof item === 'object') {
  3862.  
  3863.                       const rendererKey = firstObjectKey(item);
  3864.                       if (rendererKey) {
  3865.                         const renderer = item[rendererKey];
  3866.                         if (renderer && typeof renderer === 'object') {
  3867.                           renderer.__videoOffsetTimeMsec__ = r.videoOffsetTimeMsec;
  3868.                           renderer.__progressAt__ = playerProgressChangedArg1;
  3869.                         }
  3870.  
  3871.                       }
  3872.  
  3873.                     }
  3874.                   }
  3875.                 }
  3876.               }
  3877.               return r;
  3878.             }
  3879.  
  3880.             cProto.playerProgressChanged_ = function (a, b, c) {
  3881.               playerProgressChangedArg1 = a;
  3882.               playerProgressChangedArg2 = b;
  3883.               playerProgressChangedArg3 = c;
  3884.               const replayBuffer_ = this.replayBuffer_;
  3885.               if (replayBuffer_) {
  3886.                 const replayQueue = replayBuffer_.replayQueue
  3887.                 if (replayQueue && typeof replayQueue === 'object' && !replayQueue.qe3) {
  3888.  
  3889.                   replayBuffer_.replayQueue = new Proxy(replayBuffer_.replayQueue, {
  3890.                     get(target, prop, receiver) {
  3891.                       if (prop === 'qe3') return 1;
  3892.                       const v = target[prop];
  3893.                       if (prop === 'front_') {
  3894.                         if (v && typeof v.length === 'number') {
  3895.                           if (!v.pop78) {
  3896.                             v.pop78 = v.pop;
  3897.                             v.pop = pop078;
  3898.                           }
  3899.                         }
  3900.                       }
  3901.                       return v;
  3902.                     }
  3903.                   });
  3904.  
  3905.                 }
  3906.               }
  3907.               return this.playerProgressChanged32_.apply(this, arguments);
  3908.             };
  3909.  
  3910.           }
  3911.  
  3912.           console.log("[End]");
  3913.           console.groupEnd();
  3914.  
  3915.  
  3916.         });
  3917.  
  3918.       }
  3919.  
  3920.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3921.  
  3922.         const tag = "yt-live-chat-item-list-renderer"
  3923.         const dummy = document.createElement(tag);
  3924.  
  3925.         const cProto = getProto(dummy);
  3926.         if (!cProto || !cProto.attached) {
  3927.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3928.           return;
  3929.         }
  3930.  
  3931.         mightFirstCheckOnYtInit();
  3932.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3933.         console.log("[Begin]");
  3934.  
  3935.         const mclp = cProto;
  3936.         try {
  3937.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3938.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3939.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3940.           assertor(() => typeof mclp.setAtBottom === 'function');
  3941.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3942.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3943.         } catch (e) { }
  3944.  
  3945.  
  3946.         try {
  3947.           assertor(() => typeof mclp.attached === 'function');
  3948.           assertor(() => typeof mclp.detached === 'function');
  3949.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3950.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3951.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3952.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3953.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3954.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3955.         } catch (e) { }
  3956.  
  3957.         mclp.__intermediate_delay__ = null;
  3958.  
  3959.         let myk = 0;
  3960.         let mlf = 0;
  3961.         let myw = 0;
  3962.         let mzt = 0;
  3963.         let zarr = null;
  3964.         let mlg = 0;
  3965.  
  3966.         if ((mclp._flag0281_ & 0x2000) == 0) {
  3967.  
  3968.           if ((mclp.clearList || 0).length === 0) {
  3969.             (mclp._flag0281_ & 0x2) == 0 && assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3970.             mclp.clearList66 = mclp.clearList;
  3971.             mclp.clearList = function () {
  3972.               myk++;
  3973.               mlf++;
  3974.               myw++;
  3975.               mzt++;
  3976.               mlg++;
  3977.               zarr = null;
  3978.               this.__intermediate_delay__ = null;
  3979.               this.clearList66();
  3980.             };
  3981.             console.log("clearList", "OK");
  3982.           } else {
  3983.             console.log("clearList", "NG");
  3984.           }
  3985.  
  3986.         }
  3987.  
  3988.  
  3989.  
  3990.         let onListRendererAttachedDone = false;
  3991.  
  3992.         function setList(itemOffset, items) {
  3993.  
  3994.           const isFirstTime = onListRendererAttachedDone === false;
  3995.  
  3996.           if (isFirstTime) {
  3997.             onListRendererAttachedDone = true;
  3998.             Promise.resolve().then(watchUserCSS);
  3999.             addCssManaged();
  4000.             setupEvents();
  4001.           }
  4002.  
  4003.           setupStyle(itemOffset, items);
  4004.  
  4005.           setupMutObserver(items);
  4006.         }
  4007.  
  4008.         mclp.attached419 = async function () {
  4009.  
  4010.           if (!this.isAttached) return;
  4011.  
  4012.           let maxTrial = 16;
  4013.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  4014.             if (--maxTrial < 0 || !this.isAttached) return;
  4015.             await iAFP(this.hostElement).then();
  4016.             // await new Promise(requestAnimationFrame);
  4017.           }
  4018.  
  4019.           if (this.isAttached !== true) return;
  4020.  
  4021.           if (!this.$) {
  4022.             console.warn("!this.$");
  4023.             return;
  4024.           }
  4025.           if (!this.$) return;
  4026.           /** @type {HTMLElement | null} */
  4027.           const itemScroller = this.$['item-scroller'];
  4028.           /** @type {HTMLElement | null} */
  4029.           const itemOffset = this.$['item-offset'];
  4030.           /** @type {HTMLElement | null} */
  4031.           const items = this.$['items'];
  4032.  
  4033.           if (!itemScroller || !itemOffset || !items) {
  4034.             console.warn("items.parentNode !== itemOffset");
  4035.             return;
  4036.           }
  4037.  
  4038.           if (nodeParent(items) !== itemOffset) {
  4039.  
  4040.             console.warn("items.parentNode !== itemOffset");
  4041.             return;
  4042.           }
  4043.  
  4044.  
  4045.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  4046.  
  4047.             console.warn("id incorrect");
  4048.             return;
  4049.           }
  4050.  
  4051.           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')
  4052.  
  4053.           if (!isTargetItems) {
  4054.             console.warn("!isTargetItems");
  4055.             return;
  4056.           }
  4057.  
  4058.           setList(itemOffset, items);
  4059.  
  4060.         }
  4061.  
  4062.         mclp.attached331 = mclp.attached;
  4063.         mclp.attached = function () {
  4064.           this.attached419 && this.attached419();
  4065.           return this.attached331();
  4066.         }
  4067.  
  4068.         mclp.detached331 = mclp.detached;
  4069.  
  4070.         mclp.detached = function () {
  4071.           setupMutObserver();
  4072.           return this.detached331();
  4073.         }
  4074.  
  4075.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  4076.         for (const t29 of t29s) {
  4077.           if (insp(t29).isAttached === true) {
  4078.             t29.attached419();
  4079.           }
  4080.         }
  4081.  
  4082.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  4083.  
  4084.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  4085.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  4086.  
  4087.           /** @type {Map<number, any>} */
  4088.           const aMap = new Map();
  4089.           let count = 6150;
  4090.           mclp.async66 = mclp.async;
  4091.           mclp.async = function (e, f) {
  4092.             // ensure the previous operation is done
  4093.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  4094.             const hasF = arguments.length === 2;
  4095.             const stack = new Error().stack;
  4096.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  4097.             if (count > 1e9) count = 6159;
  4098.             const resId = ++count;
  4099.             aMap.set(resId, e);
  4100.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  4101.               const rp = aMap.get(resId);
  4102.               if (typeof rp !== 'function') {
  4103.                 return;
  4104.               }
  4105.               let cancelCall = false;
  4106.               if (isFlushAsync) {
  4107.                 if (rk < 0) {
  4108.                   cancelCall = true;
  4109.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  4110.                   cancelCall = true;
  4111.                 }
  4112.               }
  4113.               if (cancelCall) {
  4114.                 aMap.delete(resId);
  4115.               } else {
  4116.                 const asyncEn = function () {
  4117.                   aMap.delete(resId);
  4118.                   return rp.apply(this, arguments);
  4119.                 };
  4120.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  4121.               }
  4122.             });
  4123.  
  4124.             return resId;
  4125.           }
  4126.  
  4127.           mclp.cancelAsync66 = mclp.cancelAsync;
  4128.           mclp.cancelAsync = function (resId) {
  4129.             if (resId <= 6150) {
  4130.               this.cancelAsync66(resId);
  4131.             } else if (aMap.has(resId)) {
  4132.               const rp = aMap.get(resId);
  4133.               aMap.delete(resId);
  4134.               if (typeof rp !== 'function') {
  4135.                 this.cancelAsync66(rp);
  4136.               }
  4137.             }
  4138.           }
  4139.  
  4140.           console.log("async", "OK");
  4141.         } else {
  4142.           console.log("async", "NG");
  4143.         }
  4144.  
  4145.  
  4146.         if ((mclp._flag0281_ & 0x2) == 0) {
  4147.           if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  4148.  
  4149.             assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  4150.             mclp.showNewItems66_ = mclp.showNewItems_;
  4151.  
  4152.             mclp.showNewItems77_ = async function () {
  4153.               if (myk > 1e9) myk = 9;
  4154.               let tid = ++myk;
  4155.  
  4156.               await iAFP(this.hostElement).then();
  4157.               // await new Promise(requestAnimationFrame);
  4158.  
  4159.               if (tid !== myk) {
  4160.                 return;
  4161.               }
  4162.  
  4163.               const cnt = this;
  4164.  
  4165.               await Promise.resolve();
  4166.               cnt.showNewItems66_();
  4167.  
  4168.               await Promise.resolve();
  4169.  
  4170.             }
  4171.  
  4172.             mclp.showNewItems_ = function () {
  4173.  
  4174.               const cnt = this;
  4175.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4176.                 cnt.showNewItems77_().then(() => {
  4177.                   resolve();
  4178.                 });
  4179.               });
  4180.             }
  4181.  
  4182.             console.log("showNewItems_", "OK");
  4183.           } else {
  4184.             console.log("showNewItems_", "NG");
  4185.           }
  4186.  
  4187.         }
  4188.  
  4189.         if ((mclp._flag0281_ & 0x2000) == 0) {
  4190.           if ((mclp.flushActiveItems_ || 0).length === 0) {
  4191.  
  4192.             if ((mclp._flag0281_ & 0x2) == 0) {
  4193.  
  4194.               const sfi = fnIntegrity(mclp.flushActiveItems_);
  4195.               if (sfi === '0.156.86') {
  4196.                 // https://www.youtube.com/s/desktop/f61c8d85/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  4197.  
  4198.                 // added "refreshOffsetContainerHeight_"
  4199.  
  4200.                 //   f.flushActiveItems_ = function() {
  4201.                 //     var a = this;
  4202.                 //     if (0 < this.activeItems_.length)
  4203.                 //         if (this.canScrollToBottom_()) {
  4204.                 //             var b = Math.max(this.visibleItems.length + this.activeItems_.length - this.data.maxItemsToDisplay, 0);
  4205.                 //             b && this.splice("visibleItems", 0, b);
  4206.                 //             if (this.isSmoothScrollEnabled_() || this.dockableMessages.length)
  4207.                 //                 this.preinsertHeight_ = this.items.clientHeight;
  4208.                 //             this.activeItems_.unshift("visibleItems");
  4209.                 //             try {
  4210.                 //                 this.push.apply(this, this.activeItems_)
  4211.                 //             } catch (c) {
  4212.                 //                 fm(c)
  4213.                 //             }
  4214.                 //             this.activeItems_ = [];
  4215.                 //             this.isSmoothScrollEnabled_() ? this.canScrollToBottom_() && Mw(function() {
  4216.                 //                 a.showNewItems_()
  4217.                 //             }) : Mw(function() {
  4218.                 //                 a.refreshOffsetContainerHeight_();
  4219.                 //                 a.maybeScrollToBottom_()
  4220.                 //             })
  4221.                 //         } else
  4222.                 //             this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay)
  4223.                 // }
  4224.                 // ;
  4225.  
  4226.               } else if (sfi === '0.150.84') {
  4227.                 // https://www.youtube.com/s/desktop/e4d15d2c/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  4228.                 // var b = Math.max(this.visibleItems.length + this.activeItems_.length - this.data.maxItemsToDisplay, 0);
  4229.                 //     b && this.splice("visibleItems", 0, b);
  4230.                 //     if (this.isSmoothScrollEnabled_() || this.dockableMessages.length)
  4231.                 //         this.preinsertHeight_ = this.items.clientHeight;
  4232.                 //     this.activeItems_.unshift("visibleItems");
  4233.                 //     try {
  4234.                 //         this.push.apply(this, this.activeItems_)
  4235.                 //     } catch (c) {
  4236.                 //         nm(c)
  4237.                 //     }
  4238.                 //     this.activeItems_ = [];
  4239.                 //     this.isSmoothScrollEnabled_() ? this.canScrollToBottom_() && zQ(function() {
  4240.                 //         a.showNewItems_()
  4241.                 //     }) : zQ(function() {
  4242.                 //         a.maybeScrollToBottom_()
  4243.                 //     })
  4244.               } else if (sfi === '0.137.81' || sfi === '0.138.81') {
  4245.                 // e.g. https://www.youtube.com/yts/jsbin/live_chat_polymer-vflCyWEBP/live_chat_polymer.js
  4246.               } else {
  4247.                 assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.150.84'));
  4248.               }
  4249.             }
  4250.  
  4251.             let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  4252.  
  4253.             mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  4254.  
  4255.  
  4256.             const preloadFn = (acItems) => {
  4257.               let waitFor = [];
  4258.               /** @type {Set<string>} */
  4259.               const imageLinks = new Set();
  4260.  
  4261.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  4262.                 for (const item of acItems) {
  4263.                   fixLiveChatItem(item, imageLinks);
  4264.                 }
  4265.               }
  4266.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  4267.  
  4268.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  4269.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  4270.                 // preload performs the high priority fetching.
  4271.                 // prefetch delays the chat display if the video resoruce is demanding.
  4272.  
  4273.                 if (rel) {
  4274.  
  4275.                   imageLinks.forEach(imageLink => {
  4276.                     let d = false;
  4277.                     if (SKIP_PRELOAD_EMOJI && imageLink.includes('.ggpht.com/')) return;
  4278.                     const isEmoji = imageLink.includes('/emoji/');
  4279.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  4280.                     if (!pretechedSet.has(imageLink)) {
  4281.                       pretechedSet.add(imageLink);
  4282.                       d = true;
  4283.                     }
  4284.                     if (d) {
  4285.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  4286.  
  4287.                     }
  4288.                   })
  4289.  
  4290.                 }
  4291.  
  4292.               }
  4293.  
  4294.               return async () => {
  4295.                 if (waitFor.length > 0) {
  4296.                   await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  4297.                 }
  4298.                 waitFor.length = 0;
  4299.                 waitFor = null;
  4300.               };
  4301.  
  4302.             };
  4303.  
  4304.             mclp.flushActiveItems78_ = async function (tid) {
  4305.               try {
  4306.  
  4307.                 if (tid !== mlf) return;
  4308.                 if ((this._flag0281_ & 0x4) == 0x4) {
  4309.                   const cnt = this;
  4310.  
  4311.                   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4312.                   if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  4313.  
  4314.                   mlf++;
  4315.                   if (mlg > 1e9) mlg = 9;
  4316.                   ++mlg;
  4317.                   const acItems = cnt.activeItems_;
  4318.                   if (acItems.length < MAX_ITEMS_FOR_FULL_FLUSH) {
  4319.                     const pn = preloadFn(acItems);
  4320.                     await pn();
  4321.                   }
  4322.                   cnt.flushActiveItems66_();
  4323.  
  4324.                   return 1;
  4325.  
  4326.                 }
  4327.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  4328.                 let logger = false;
  4329.                 const cnt = this;
  4330.                 let immd = cnt.__intermediate_delay__;
  4331.                 await iAFP(this.hostElement).then();
  4332.                 // await new Promise(requestAnimationFrame);
  4333.  
  4334.                 if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4335.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  4336.  
  4337.                 mlf++;
  4338.                 if (mlg > 1e9) mlg = 9;
  4339.                 ++mlg;
  4340.  
  4341.                 const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  4342.                 const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  4343.                 let changeMaxItemsToDisplay = false;
  4344.                 const activeItemsLen = this.activeItems_.length;
  4345.                 if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  4346.                   logger = true;
  4347.  
  4348.                   groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  4349.  
  4350.                   logger && console.log('[Begin]')
  4351.  
  4352.                   console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  4353.                   if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  4354.                     console.log('reduce maxitems');
  4355.                     if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  4356.                       // as all the rendered chats are already "outdated"
  4357.                       // all old chats shall remove and reduced number of few chats will be rendered
  4358.                       // then restore to the original number
  4359.                       changeMaxItemsToDisplay = true;
  4360.                       this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  4361.                       console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  4362.                     }
  4363.                     this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  4364.                     //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  4365.  
  4366.                     console.log('new this.activeItems_.length > N', this.activeItems_.length);
  4367.                   } else {
  4368.                     this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  4369.  
  4370.                     console.log('new this.activeItems_.length > N', this.activeItems_.length);
  4371.                   }
  4372.                 }
  4373.                 // it is found that it will render all stacked chats after switching back from background
  4374.                 // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  4375.                 // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  4376.  
  4377.                 cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  4378.                 await Promise.resolve();
  4379.                 const acItems = cnt.activeItems_;
  4380.                 const len1 = acItems.length;
  4381.                 if (!len1) console.warn('cnt.activeItems_.length = 0');
  4382.  
  4383.                 const pn = preloadFn(acItems);
  4384.                 const noVisibleItem1 = ((cnt.visibleItems || 0).length || 0) === 0;
  4385.                 skipDontRender = noVisibleItem1;
  4386.                 await pn();
  4387.                 // console.log('ss2', Date.now())
  4388.                 cnt.flushActiveItems66_();
  4389.                 const noVisibleItem2 = ((cnt.visibleItems || 0).length || 0) === 0;
  4390.                 skipDontRender = noVisibleItem2;
  4391.                 await Promise.resolve();
  4392.                 if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  4393.                   this.data.maxItemsToDisplay = tmpMaxItemsCount;
  4394.  
  4395.                   logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  4396.                   //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  4397.                 } else if (changeMaxItemsToDisplay) {
  4398.  
  4399.                   logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  4400.                     maxItemsToDisplay: this.data.maxItemsToDisplay,
  4401.                     reducedMaxItemsToDisplay,
  4402.                     originalMaxItemsToDisplay: tmpMaxItemsCount
  4403.                   });
  4404.                 }
  4405.                 logger && console.log('[End]');
  4406.  
  4407.                 logger && console.groupEnd();
  4408.  
  4409.                 if (noVisibleItem1 && !noVisibleItem2) {
  4410.                   // fix possible no auto scroll issue.
  4411.                   !((cnt.__notRequired__ || 0) & 256) && setTimeout(() => cnt.setAtBottom(), 1);
  4412.                 }
  4413.  
  4414.                 if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  4415.  
  4416.  
  4417.                   const ff = () => {
  4418.  
  4419.                     if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4420.                     //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4421.                     if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  4422.  
  4423.                       if (typeof nextBrowserTick !== 'function') {
  4424.                         cnt.scrollToBottom_();
  4425.                         Promise.resolve().then(() => {
  4426.                           if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4427.                           if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  4428.                         });
  4429.                       } else {
  4430.                         nextBrowserTick(() => {
  4431.                           if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4432.                           cnt.scrollToBottom_();
  4433.                         });
  4434.                       }
  4435.  
  4436.                     }
  4437.                   }
  4438.  
  4439.                   ff();
  4440.  
  4441.  
  4442.                   Promise.resolve().then(ff);
  4443.  
  4444.                   // requestAnimationFrame(ff);
  4445.                 } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  4446.  
  4447.                   const knt = cnt;
  4448.                   if (!scrollChatFn) {
  4449.                     const cnt = knt;
  4450.                     const f = () => {
  4451.                       const itemScroller = cnt.itemScroller;
  4452.                       if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  4453.                       if (!cnt.atBottom) {
  4454.                         cnt.scrollToBottom_();
  4455.                       } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  4456.                         itemScroller.scrollTop = itemScroller.scrollHeight;
  4457.                       }
  4458.                     };
  4459.                     if (typeof nextBrowserTick !== 'function') {
  4460.                       scrollChatFn = () => Promise.resolve().then(f).then(f);
  4461.                     } else {
  4462.                       scrollChatFn = () => nextBrowserTick(f);
  4463.                     }
  4464.                   }
  4465.  
  4466.                   scrollChatFn();
  4467.                 }
  4468.  
  4469.                 return 1;
  4470.  
  4471.  
  4472.               } catch (e) {
  4473.                 console.warn(e);
  4474.               }
  4475.             }
  4476.  
  4477.             mclp.flushActiveItems77_ = function () {
  4478.  
  4479.               return new Promise(resResolve => {
  4480.                 try {
  4481.                   const cnt = this;
  4482.                   if (mlf > 1e9) mlf = 9;
  4483.                   let tid = ++mlf;
  4484.                   const hostElement = cnt.hostElement || cnt;
  4485.                   if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  4486.                   if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  4487.  
  4488.                   // 4 times to maxItems to avoid frequent trimming.
  4489.                   // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  4490.  
  4491.                   const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  4492.                   this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  4493.                   if (cnt.canScrollToBottom_()) {
  4494.                     cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  4495.                       .then(() => cnt.flushActiveItems78_(tid)) // async function
  4496.                       .then((asyncResult) => {
  4497.                         resResolve(asyncResult); // either undefined or 1
  4498.                         resResolve = null;
  4499.                       }).catch((e) => {
  4500.                         console.warn(e);
  4501.                         if (resResolve) resResolve();
  4502.                       });
  4503.                   } else {
  4504.                     resResolve(2);
  4505.                     resResolve = null;
  4506.                   }
  4507.                 } catch (e) {
  4508.                   console.warn(e);
  4509.                   if (resResolve) resResolve();
  4510.                 }
  4511.  
  4512.  
  4513.               });
  4514.  
  4515.             }
  4516.  
  4517.             mclp.flushActiveItems_ = function () {
  4518.               const cnt = this;
  4519.  
  4520.               if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  4521.  
  4522.               if (cnt.activeItems_.length === 0) {
  4523.                 cnt.__intermediate_delay__ = null;
  4524.                 return;
  4525.               }
  4526.  
  4527.               const cntData = ((cnt || 0).data || 0);
  4528.               if (cntData.maxItemsToDisplay944 === undefined) {
  4529.                 cntData.maxItemsToDisplay944 = null;
  4530.                 if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  4531.                 cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  4532.               }
  4533.  
  4534.               // ignore previous __intermediate_delay__ and create a new one
  4535.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4536.                 cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  4537.                   if (rt === 1) {
  4538.                     resolve(1); // success, scroll to bottom
  4539.                     if (hasMoreMessageState === 1) {
  4540.                       hasMoreMessageState = 0;
  4541.                       const showMore = (cnt.$ || 0)['show-more'];
  4542.                       if (showMore) {
  4543.                         showMore.classList.remove('has-new-messages-miuzp');
  4544.                       }
  4545.                     }
  4546.                   }
  4547.                   else if (rt === 2) {
  4548.                     resolve(2); // success, trim
  4549.                     if (hasMoreMessageState === 0) {
  4550.                       hasMoreMessageState = 1;
  4551.                       const showMore = cnt.$['show-more'];
  4552.                       if (showMore) {
  4553.                         showMore.classList.add('has-new-messages-miuzp');
  4554.                       }
  4555.                     }
  4556.                   }
  4557.                   else resolve(-1); // skip
  4558.                 }).catch(e => {
  4559.                   console.warn(e);
  4560.                 });
  4561.               });
  4562.  
  4563.             }
  4564.             console.log("flushActiveItems_", "OK");
  4565.           } else {
  4566.             console.log("flushActiveItems_", "NG");
  4567.           }
  4568.         }
  4569.  
  4570.         if ((mclp._flag0281_ & 0x40) == 0) {
  4571.  
  4572.           if (SUPPRESS_refreshOffsetContainerHeight_ && typeof mclp.refreshOffsetContainerHeight_ === 'function' && !mclp.refreshOffsetContainerHeight26_ && mclp.refreshOffsetContainerHeight_.length === 0) {
  4573.             assertor(() => fnIntegrity(mclp.refreshOffsetContainerHeight_, '0.31.21'));
  4574.             mclp.refreshOffsetContainerHeight26_ = mclp.refreshOffsetContainerHeight_;
  4575.             mclp.refreshOffsetContainerHeight_ = function () {
  4576.               // var a = this.itemScroller.clientHeight;
  4577.               // this.itemOffset.style.height = this.items.clientHeight + "px";
  4578.               // this.bottomAlignMessages && (this.itemOffset.style.minHeight = a + "px")
  4579.             }
  4580.             console.log("refreshOffsetContainerHeight_", "OK");
  4581.           } else {
  4582.             console.log("refreshOffsetContainerHeight_", "NG");
  4583.           }
  4584.  
  4585.         }
  4586.  
  4587.         if ((mclp._flag0281_ & 0x80) == 0) {
  4588.           mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  4589.             try {
  4590.               if (mlg > 1e9) mlg = 9;
  4591.               const tid = ++mlg;
  4592.               const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  4593.               const runCond = () => this.canScrollToBottom_();
  4594.               if (!keepTrialCond()) return;
  4595.               if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  4596.               await new Promise(r => setTimeout(r, 80));
  4597.               if (!keepTrialCond()) return;
  4598.               if (runCond()) return this.flushActiveItems_() | 1;
  4599.               await iAFP(this.hostElement).then();
  4600.               // await new Promise(requestAnimationFrame);
  4601.               if (runCond()) return this.flushActiveItems_() | 1;
  4602.             } catch (e) {
  4603.               console.warn(e);
  4604.             }
  4605.           }
  4606.         }
  4607.  
  4608.         if ((mclp._flag0281_ & 0x40) == 0) {
  4609.  
  4610.           if ((mclp.atBottomChanged_ || 0).length === 1) {
  4611.             // note: if the scrolling is too frequent, the show more visibility might get wrong.
  4612.  
  4613.             const sfi = fnIntegrity(mclp.atBottomChanged_);
  4614.             if (sfi === '1.73.37') {
  4615.               // https://www.youtube.com/s/desktop/e4d15d2c/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  4616.             } else if (sfi === '1.75.39') {
  4617.               // e.g. https://www.youtube.com/yts/jsbin/live_chat_polymer-vflCyWEBP/live_chat_polymer.js
  4618.             } else {
  4619.               assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.73.37'));
  4620.             }
  4621.  
  4622.             const querySelector = HTMLElement.prototype.querySelector;
  4623.             const U = (element) => ({
  4624.               querySelector: (selector) => querySelector.call(element, selector)
  4625.             });
  4626.  
  4627.             let qid = 0;
  4628.             mclp.__updateButtonVisibility371__ = function (button) {
  4629.               Promise.resolve().then(() => {
  4630.                 button.style.visibility = this.__buttonVisibility371__;
  4631.               });
  4632.             }
  4633.             const fixButtonOnClick = function (cnt, button) {
  4634.               button.addEventListener('click', (evt) => {
  4635.                 evt.stopImmediatePropagation();
  4636.                 evt.stopPropagation();
  4637.                 evt.preventDefault();
  4638.                 Promise.resolve().then(() => {
  4639.                   cnt.scrollToBottom_();
  4640.                 });
  4641.               }, true);
  4642.               // button.addEventListener('pointerup', (evt)=>{
  4643.               //   evt.stopImmediatePropagation();
  4644.               //   evt.stopPropagation();
  4645.               // }, true);
  4646.               // button.addEventListener('mouseup', (evt)=>{
  4647.               //   evt.stopImmediatePropagation();
  4648.               //   evt.stopPropagation();
  4649.               // }, true);
  4650.             }
  4651.             mclp.atBottomChanged_ = function (a) {
  4652.               const button = (this.$ || 0)['show-more'];
  4653.               if (button) {
  4654.                 // primary execution
  4655.                 if (a) {
  4656.                   if (this.__buttonVisibility371__ !== "hidden") {
  4657.                     this.__buttonVisibility371__ = "hidden";
  4658.                     if (!this.hideShowMoreAsync_) {
  4659.                       const tid = ++qid;
  4660.                       this.hideShowMoreAsync_ = foregroundPromiseFn().then(() => {
  4661.                         if (tid !== qid) {
  4662.                           return;
  4663.                         }
  4664.                         this.__updateButtonVisibility371__(button);
  4665.                       });
  4666.                     }
  4667.                   }
  4668.                 } else {
  4669.                   if (this.__buttonVisibility371__ !== "visible") {
  4670.                     this.__buttonVisibility371__ = "visible";
  4671.                     if (this.hideShowMoreAsync_) {
  4672.                       qid++;
  4673.                     }
  4674.                     this.hideShowMoreAsync_ = null;
  4675.                     if (!button.__fix_onclick__) {
  4676.                       button.__fix_onclick__ = true;
  4677.                       fixButtonOnClick(this, button);
  4678.                     }
  4679.                     this.__updateButtonVisibility371__(button);
  4680.                   }
  4681.                 }
  4682.               } else {
  4683.                 // fallback
  4684.                 let tid = ++qid;
  4685.                 let b = this;
  4686.                 a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  4687.                   if (tid !== qid) return;
  4688.                   U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  4689.                 }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  4690.                   this.hideShowMoreAsync_ = null,
  4691.                   U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  4692.               }
  4693.             }
  4694.  
  4695.             console.log("atBottomChanged_", "OK");
  4696.           } else {
  4697.             console.log("atBottomChanged_", "NG");
  4698.           }
  4699.         }
  4700.  
  4701.  
  4702.         if ((mclp._flag0281_ & 0x2) == 0) {
  4703.           if ((mclp.onScrollItems_ || 0).length === 1) {
  4704.  
  4705.             assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  4706.             mclp.onScrollItems66_ = mclp.onScrollItems_;
  4707.             mclp.onScrollItems77_ = async function (evt) {
  4708.               if (myw > 1e9) myw = 9;
  4709.               let tid = ++myw;
  4710.  
  4711.               await iAFP(this.hostElement).then();
  4712.               // await new Promise(requestAnimationFrame);
  4713.  
  4714.               if (tid !== myw) {
  4715.                 return;
  4716.               }
  4717.  
  4718.               const cnt = this;
  4719.  
  4720.               await Promise.resolve();
  4721.               if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  4722.                 const onScrollItemsBasicOnly_ = !!((cnt.__notRequired__ || 0) & 512);
  4723.                 await Promise.resolve().then(() => {
  4724.                   this.ytRendererBehavior.onScroll(evt);
  4725.                 }).then(() => {
  4726.                   if (onScrollItemsBasicOnly_) return;
  4727.                   if (this.canScrollToBottom_()) {
  4728.                     const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  4729.                     if (hasUserJustInteracted) {
  4730.                       // only when there is an user action
  4731.                       !((cnt.__notRequired__ || 0) & 256) && this.setAtBottom();
  4732.                       return 1;
  4733.                     }
  4734.                   } else {
  4735.                     // no message inserting
  4736.                     !((cnt.__notRequired__ || 0) & 256) && this.setAtBottom();
  4737.                     return 1;
  4738.                   }
  4739.                 }).then((r) => {
  4740.  
  4741.                   if (onScrollItemsBasicOnly_) return;
  4742.                   if (this.activeItems_.length) {
  4743.  
  4744.                     if (this.canScrollToBottom_()) {
  4745.                       this.flushActiveItems_();
  4746.                       return 1 && r;
  4747.                     } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  4748.                       // delayed due to user action
  4749.                       this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  4750.                       return 0;
  4751.                     }
  4752.                   }
  4753.                 }).then((r) => {
  4754.                   if (onScrollItemsBasicOnly_) return;
  4755.                   if (r) {
  4756.                     // ensure setAtBottom is correctly set
  4757.                     !((cnt.__notRequired__ || 0) & 256) && this.setAtBottom();
  4758.                   }
  4759.                 });
  4760.               } else {
  4761.                 cnt.onScrollItems66_(evt);
  4762.               }
  4763.  
  4764.               await Promise.resolve();
  4765.  
  4766.             }
  4767.  
  4768.             mclp.onScrollItems_ = function (evt) {
  4769.  
  4770.               const cnt = this;
  4771.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4772.                 cnt.onScrollItems77_(evt).then(() => {
  4773.                   resolve();
  4774.                 });
  4775.               });
  4776.             }
  4777.             console.log("onScrollItems_", "OK");
  4778.           } else {
  4779.             console.log("onScrollItems_", "NG");
  4780.           }
  4781.         }
  4782.  
  4783.         if ((mclp._flag0281_ & 0x2) == 0) {
  4784.           if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  4785.  
  4786.             const sfi = fnIntegrity(mclp.handleLiveChatActions_);
  4787.             if (sfi === '1.39.20') {
  4788.               // TBC
  4789.             } else if (sfi === '1.31.17') {
  4790.               // original
  4791.             } else {
  4792.               assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  4793.             }
  4794.  
  4795.             mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  4796.  
  4797.             mclp.handleLiveChatActions77_ = async function (arr) {
  4798.               if (typeof (arr || 0).length !== 'number') {
  4799.                 this.handleLiveChatActions66_(arr);
  4800.                 return;
  4801.               }
  4802.               if (mzt > 1e9) mzt = 9;
  4803.               let tid = ++mzt;
  4804.  
  4805.               if (zarr === null) zarr = arr;
  4806.               else Array.prototype.push.apply(zarr, arr);
  4807.               arr = null;
  4808.  
  4809.               await iAFP(this.hostElement).then();
  4810.               // await new Promise(requestAnimationFrame);
  4811.  
  4812.               if (tid !== mzt || zarr === null) {
  4813.                 return;
  4814.               }
  4815.  
  4816.               const carr = zarr;
  4817.               zarr = null;
  4818.  
  4819.               await Promise.resolve();
  4820.               this.handleLiveChatActions66_(carr);
  4821.               await Promise.resolve();
  4822.  
  4823.             }
  4824.  
  4825.             mclp.handleLiveChatActions_ = function (arr) {
  4826.  
  4827.               const cnt = this;
  4828.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4829.                 cnt.handleLiveChatActions77_(arr).then(() => {
  4830.                   resolve();
  4831.                 });
  4832.               });
  4833.             }
  4834.             console.log("handleLiveChatActions_", "OK");
  4835.           } else {
  4836.             console.log("handleLiveChatActions_", "NG");
  4837.           }
  4838.         }
  4839.  
  4840.         mclp.hasUserJustInteracted11_ = () => {
  4841.           const t = dateNow();
  4842.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  4843.         }
  4844.  
  4845.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  4846.  
  4847.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  4848.  
  4849.           mclp.canScrollToBottom_ = function () {
  4850.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  4851.           }
  4852.  
  4853.           console.log("canScrollToBottom_", "OK");
  4854.         } else {
  4855.           console.log("canScrollToBottom_", "NG");
  4856.         }
  4857.  
  4858.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  4859.  
  4860.           mclp.isSmoothScrollEnabled_ = function () {
  4861.             return false;
  4862.           }
  4863.  
  4864.           mclp.maybeResizeScrollContainer_ = function () {
  4865.             //
  4866.           }
  4867.  
  4868.           mclp.refreshOffsetContainerHeight_ = function () {
  4869.             //
  4870.           }
  4871.  
  4872.           mclp.smoothScroll_ = function () {
  4873.             //
  4874.           }
  4875.  
  4876.           mclp.resetSmoothScroll_ = function () {
  4877.             //
  4878.           }
  4879.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  4880.         } else {
  4881.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  4882.         }
  4883.  
  4884.         if ((this._flag0281_ & 0x8) == 0) {
  4885.  
  4886.  
  4887.           if (typeof mclp.forEachItem_ === 'function' && !mclp.forEachItem66_ && skipErrorForhandleAddChatItemAction_ && mclp.forEachItem_.length === 1) {
  4888.  
  4889.             mclp.forEachItem66_ = mclp.forEachItem_;
  4890.             mclp.forEachItem_ = function (a) {
  4891.  
  4892.               if ((this._flag0281_ & 0x8) == 0x8) return this.forEachItem66_(a);
  4893.  
  4894.               // ƒ (a){this.visibleItems.forEach(a.bind(this,"visibleItems"));this.activeItems_.forEach(a.bind(this,"activeItems_"))}
  4895.  
  4896.               try {
  4897.  
  4898.                 let items801 = false;
  4899.                 if (typeof a === 'function') {
  4900.                   const items = this.items;
  4901.                   if (items instanceof HTMLDivElement) {
  4902.                     const ev = this.visibleItems;
  4903.                     const ea = this.activeItems_;
  4904.                     if (ev && ea && ev.length >= 0 && ea.length >= 0) {
  4905.                       items801 = items;
  4906.                     }
  4907.                   }
  4908.                 }
  4909.  
  4910.                 if (items801) {
  4911.                   items801.__children801__ = 1;
  4912.                   const res = this.forEachItem66_(a);
  4913.                   items801.__children801__ = 0;
  4914.                   return res;
  4915.                 }
  4916.  
  4917.               } catch (e) { }
  4918.               return this.forEachItem66_(a);
  4919.  
  4920.  
  4921.               // this.visibleItems.forEach((val, idx, arr)=>{
  4922.               //   a.call(this, 'visibleItems', val, idx, arr);
  4923.               // });
  4924.  
  4925.               // this.activeItems_.forEach((val, idx, arr)=>{
  4926.               //   a.call(this, 'activeItems_', val, idx, arr);
  4927.               // });
  4928.  
  4929.  
  4930.  
  4931.             }
  4932.  
  4933.  
  4934.           }
  4935.  
  4936.         }
  4937.  
  4938.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4939.  
  4940.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  4941.           mclp.handleAddChatItemAction_ = function (a) {
  4942.             try {
  4943.               if (a && typeof a === 'object' && !('length' in a)) {
  4944.                 fixLiveChatItem(a.item, null);
  4945.                 console.assert(arguments[0] === a);
  4946.               }
  4947.             } catch (e) { console.warn(e) }
  4948.             let res;
  4949.             if (skipErrorForhandleAddChatItemAction_) { // YouTube Native Engine Issue
  4950.               try {
  4951.                 res = this.handleAddChatItemAction66_.apply(this, arguments);
  4952.               } catch (e) {
  4953.                 if (e && (e.message || '').includes('.querySelector(')) {
  4954.                   console.log("skipErrorForhandleAddChatItemAction_", e.message);
  4955.                 } else {
  4956.                   throw e;
  4957.                 }
  4958.               }
  4959.             } else {
  4960.               res = this.handleAddChatItemAction66_.apply(this, arguments);
  4961.             }
  4962.             return res;
  4963.           }
  4964.  
  4965.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4966.         } else {
  4967.  
  4968.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4969.         }
  4970.  
  4971.  
  4972.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4973.  
  4974.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  4975.           mclp.handleReplaceChatItemAction_ = function (a) {
  4976.             try {
  4977.               if (a && typeof a === 'object' && !('length' in a)) {
  4978.                 fixLiveChatItem(a.replacementItem, null);
  4979.                 console.assert(arguments[0] === a);
  4980.               }
  4981.             } catch (e) { console.warn(e) }
  4982.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  4983.           }
  4984.  
  4985.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4986.         } else {
  4987.  
  4988.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4989.         }
  4990.  
  4991.         console.log("[End]");
  4992.         console.groupEnd();
  4993.  
  4994.       }).catch(console.warn);
  4995.  
  4996.  
  4997.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  4998.  
  4999.         let yd = (this.__dataHost || insp(this).__dataHost || 0).__data;
  5000.  
  5001.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  5002.  
  5003.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  5004.           let v = `${attrValue}`;
  5005.           // conside a ticker is 101px width
  5006.           // 1% = 1.01px
  5007.           // 0.2% = 0.202px
  5008.  
  5009.  
  5010.           const ratio1 = (yd.ratio * 100);
  5011.           if (ratio1 > -1) { // avoid NaN
  5012.  
  5013.             // countdownDurationMs
  5014.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  5015.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  5016.             // 150000 - 1%    <1% = 1.5s>
  5017.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  5018.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  5019.  
  5020.             // 99px * 5% = 4.95px
  5021.  
  5022.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  5023.  
  5024.  
  5025.             // 1% Duration
  5026.  
  5027.             let ratio2 = ratio1;
  5028.  
  5029.             const ydd = yd.data;
  5030.             if (ydd) {
  5031.  
  5032.               const d1 = ydd.durationSec;
  5033.               const d2 = ydd.fullDurationSec;
  5034.  
  5035.               // @ step timing [min. 0.2%]
  5036.               let numOfSteps = 500;
  5037.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  5038.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  5039.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  5040.                 else if (d2 > 100) numOfSteps = 100; // 1%
  5041.                 else if (d2 > 50) numOfSteps = 50; // 2%
  5042.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  5043.                 else numOfSteps = 20;
  5044.               }
  5045.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  5046.               if (numOfSteps < 5) numOfSteps = 5;
  5047.  
  5048.               const rd = numOfSteps / 100.0;
  5049.  
  5050.               ratio2 = Math.round(ratio2 * rd) / rd;
  5051.  
  5052.               // ratio2 = Math.round(ratio2 * 5) / 5;
  5053.               ratio2 = ratio2.toFixed(1);
  5054.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  5055.  
  5056.               if (yd.__style_last__ === v) return;
  5057.               yd.__style_last__ = v;
  5058.               // do not consider any delay here.
  5059.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  5060.  
  5061.             }
  5062.           }
  5063.  
  5064.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  5065.  
  5066.  
  5067.         } else {
  5068.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  5069.         }
  5070.  
  5071.       };
  5072.  
  5073.  
  5074.       const fpTicker = (renderer) => {
  5075.         const cnt = insp(renderer);
  5076.         assertor(() => typeof (cnt || 0).is === 'string');
  5077.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  5078.         const container = (cnt.$ || 0).container;
  5079.         if (container) {
  5080.           assertor(() => (container || 0).nodeType === 1);
  5081.           assertor(() => typeof container.setAttribute === 'function');
  5082.           container.setAttribute = tickerContainerSetAttribute;
  5083.         } else {
  5084.           console.warn(`"container" does not exist in ${cnt.is}`);
  5085.         }
  5086.       };
  5087.  
  5088.  
  5089.       const tags = [
  5090.         "yt-live-chat-ticker-paid-message-item-renderer",
  5091.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  5092.         "yt-live-chat-ticker-renderer",
  5093.         "yt-live-chat-ticker-sponsor-item-renderer"
  5094.       ];
  5095.  
  5096.       const tagsItemRenderer = [
  5097.         "yt-live-chat-ticker-paid-message-item-renderer",
  5098.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  5099.         "yt-live-chat-ticker-renderer",
  5100.         "yt-live-chat-ticker-sponsor-item-renderer"
  5101.       ];
  5102.  
  5103.  
  5104.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  5105.  
  5106.         mightFirstCheckOnYtInit();
  5107.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  5108.         console.log("[Begin]");
  5109.  
  5110.         let dummyValueForStyleReturn = null;
  5111.  
  5112.         const genDummyValueForStyleReturn = () => {
  5113.           let s = `--nx:82;`
  5114.           let ro = {
  5115.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  5116.             "implementsGoogStringTypedString": true
  5117.           };
  5118.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  5119.           return ro;
  5120.         }
  5121.  
  5122.         let isCSSPropertySupported_ = null;
  5123.         const isCSSPropertySupported = () => {
  5124.  
  5125.           // @property --ticker-rtime
  5126.  
  5127.           if (typeof isCSSPropertySupported_ === 'boolean') return isCSSPropertySupported_;
  5128.           isCSSPropertySupported_ = false;
  5129.  
  5130.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return false;
  5131.           const documentElement = document.documentElement;
  5132.           if (!documentElement) {
  5133.             console.warn('document.documentElement is not found');
  5134.             return false;
  5135.           }
  5136.           if (`${getComputedStyleCached(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  5137.             return false;
  5138.           }
  5139.  
  5140.           const ae = animate.call(documentElement,
  5141.             [
  5142.               { '--ticker-rtime': '70%' },
  5143.               { '--ticker-rtime': '30%' }
  5144.             ],
  5145.             {
  5146.               fill: "forwards",
  5147.               duration: 1000 * 40,
  5148.               easing: 'linear'
  5149.             }
  5150.           );
  5151.  
  5152.           let animatedValue = getComputedStyleCached(document.documentElement).getPropertyValue('--ticker-rtime');
  5153.           ae.finish();
  5154.           if (`${animatedValue}`.length !== 3) return false;
  5155.  
  5156.           isCSSPropertySupported_ = true;
  5157.           return true;
  5158.  
  5159.         };
  5160.  
  5161.  
  5162.         let windowShownAt = -1;
  5163.         const setupEventForWindowShownAt = () => {
  5164.           window.addEventListener('visibilitychange', () => {
  5165.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  5166.             else windowShownAt = 0;
  5167.           }, false);
  5168.         }
  5169.  
  5170.         const dProto = {
  5171.  
  5172.           attachedForTickerInit: function () {
  5173.  
  5174.             fpTicker(this.hostElement || this);
  5175.             return this.attached77();
  5176.  
  5177.           },
  5178.  
  5179.  
  5180.           // doAnimator
  5181.  
  5182.           _makeAnimator: function () {
  5183.             if (this._r782) return;
  5184.             // if (!this.isAttached) return;
  5185.             if (!this._runnerAE) {
  5186.               /** @type {HTMLElement | null} */
  5187.               const aElement = (this.$ || 0).container;
  5188.               if (!aElement) return console.warn("this.$.container is undefined");
  5189.               const da = this.data;
  5190.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  5191.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  5192.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  5193.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  5194.  
  5195.               // if (!this.__tickerBackgroundInitialChecked__) {
  5196.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  5197.               //   console.log('__tickerBackgroundInitialChecked__')
  5198.               //   this._checkTickerBackgroundChanged();
  5199.               // }
  5200.  
  5201.               aElement.style.setProperty('--ticker-c1', c1);
  5202.               aElement.style.setProperty('--ticker-c2', c2);
  5203.               aElement.classList.add(runTickerClassName);
  5204.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  5205.               // this._aeStartV = this.countdownMs;
  5206.               // this._aeStartT = this.countdownDurationMs;
  5207.               if (!(p >= 0 && p <= 100)) {
  5208.                 console.warn('incorrect time ratio', p);
  5209.               } else {
  5210.                 /*
  5211.                 const u0 = p.toFixed(4) + '%';
  5212.                 this._runnerAE = animate.call(aElement,
  5213.                   [
  5214.                     { '--ticker-rtime': u0 },
  5215.                     { '--ticker-rtime': '0%' }
  5216.                   ]
  5217.                   ,
  5218.                   {
  5219.                     fill: "forwards",
  5220.                     duration: this.countdownMs,
  5221.                     easing: "linear"
  5222.                   }
  5223.                 );
  5224.                 */
  5225.  
  5226.                 let timingFn = 'linear';
  5227.  
  5228.                 const totalDuration = this.countdownDurationMs;
  5229.  
  5230.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  5231.  
  5232.                   // @ step timing [min. 0.2%]
  5233.                   let stepInterval = 0.2; // unit: %
  5234.                   if (totalDuration > 400000) stepInterval = 0.2;
  5235.                   else if (totalDuration > 200000) stepInterval = 0.5;
  5236.                   else if (totalDuration > 100000) stepInterval = 1;
  5237.                   else if (totalDuration > 50000) stepInterval = 2;
  5238.                   else if (totalDuration > 25000) stepInterval = 5;
  5239.                   else stepInterval = 5;
  5240.  
  5241.                   let numOfSteps = Math.round(100 / stepInterval);
  5242.  
  5243.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  5244.                   if (numOfSteps < 5) numOfSteps = 5;
  5245.  
  5246.                   timingFn = `steps(${numOfSteps}, end)`;
  5247.  
  5248.                 }
  5249.  
  5250.  
  5251.                 /** @type {Animation} */
  5252.                 const ae = animate.call(aElement,
  5253.                   [
  5254.                     { '--ticker-rtime': '100%' },
  5255.                     { '--ticker-rtime': '0%' }
  5256.                   ]
  5257.                   ,
  5258.                   {
  5259.                     fill: "forwards",
  5260.                     duration: totalDuration,
  5261.                     easing: timingFn
  5262.                   }
  5263.                 );
  5264.  
  5265.                 this._runnerAE = ae;
  5266.  
  5267.                 ae.onfinish = (event) => {
  5268.                   this.onfinish = null;
  5269.                   if (this._runnerAE !== ae) return;
  5270.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  5271.                     this._aeFinished(event);
  5272.                   }
  5273.                 }
  5274.  
  5275.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  5276.  
  5277.                 if (bq >= 0 && bq <= totalDuration) {
  5278.  
  5279.                   if (bq > totalDuration - 1) {
  5280.                     ae.currentTime = bq;
  5281.                     // setTimeout(() => {
  5282.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  5283.                     // }, 1);
  5284.                   } else {
  5285.                     ae.currentTime = bq;
  5286.                   }
  5287.                 } else {
  5288.                   console.warn('Error on setting _runnerAE.currentTime!');
  5289.                 }
  5290.  
  5291.  
  5292.                 aeConstructor = ae.constructor; // constructor is from iframe
  5293.                 return ae;
  5294.               }
  5295.             } else {
  5296.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  5297.               // assume just time update
  5298.               const ae = this._runnerAE;
  5299.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  5300.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  5301.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  5302.               if (!(p >= 0 && p <= 100)) {
  5303.                 console.warn('incorrect time ratio', p);
  5304.               } else {
  5305.                 // let u0 = p.toFixed(4) + '%'
  5306.                 /*
  5307.                 ae.effect.setKeyframes([
  5308.                   { '--ticker-rtime': u0 },
  5309.                   { '--ticker-rtime': '0%' }
  5310.                 ]);
  5311.                 ae.effect.updateTiming({ duration: this.countdownMs });
  5312.                 */
  5313.                 // ae.currentTime = 0;
  5314.  
  5315.  
  5316.  
  5317.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  5318.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  5319.  
  5320.                   this._runnerAE.currentTime = bq
  5321.                 } else {
  5322.                   console.warn('Error on setting _runnerAE.currentTime!');
  5323.                 }
  5324.  
  5325.  
  5326.                 ae.play();
  5327.                 return ae;
  5328.               }
  5329.             }
  5330.           },
  5331.  
  5332.           _aeFinished: function (event) {
  5333.  
  5334.             if (this._r782) return;
  5335.  
  5336.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5337.               this._throwOut();
  5338.               return;
  5339.             }
  5340.  
  5341.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  5342.  
  5343.             let lc = window.performance.now();
  5344.             this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  5345.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  5346.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  5347.             if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  5348.  
  5349.             this.countdownMs = 0;
  5350.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  5351.  
  5352.             if (this.isAttached) {
  5353.               let fastRemoved = false;
  5354.               if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  5355.                 // no animation if the video page is switched from background to foreground
  5356.                 // this.hostElement.style.display = 'none';
  5357.                 const id = (this.data || 0).id || 0;
  5358.                 if (!id) this.data = { id: 1 }
  5359.                 try {
  5360.                   this.requestRemoval();
  5361.                   fastRemoved = true;
  5362.                 } catch (e) {
  5363.  
  5364.                 }
  5365.               }
  5366.  
  5367.               if (!fastRemoved) {
  5368.                 "auto" === this.hostElement.style.width && this.setContainerWidth();
  5369.                 this.slideDown();
  5370.               }
  5371.             }
  5372.  
  5373.  
  5374.  
  5375.           },
  5376.  
  5377.  
  5378.           /** @type {()} */
  5379.           _throwOut: function () {
  5380.             this._r782 = 1;
  5381.             Promise.resolve().then(() => {
  5382.               if (typeof this.requestRemoval === 'function') {
  5383.                 const id = (this.data || 0).id;
  5384.                 if (!id) this.data = { id: 1 };
  5385.                 try {
  5386.                   this.requestRemoval();
  5387.                 } catch (e) { }
  5388.               }
  5389.               this.detached();
  5390.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  5391.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  5392.               if (this.__dataReady === true) this.__dataReady = false;
  5393.               this.data = null;
  5394.               this.countdownMs = 0;
  5395.               this.lastCountdownTimeMs = null;
  5396.               const hm = this.hostElement || this;
  5397.               if (hm.parentNode) hm.remove();
  5398.               for (let t; t = hm.firstChild;) t.remove();
  5399.             }).catch(e => {
  5400.               console.warn(e);
  5401.             });
  5402.           },
  5403.  
  5404.  
  5405.           // doTimerFnModification
  5406.  
  5407.  
  5408.           /** @type {(a, b)} */
  5409.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  5410.             try {
  5411.               // a.durationSec [s] => countdownMs [ms]
  5412.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  5413.               // lastCountdownTimeMs => raf ongoing
  5414.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  5415.  
  5416.               if (this._r782) return;
  5417.  
  5418.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5419.                 this._throwOut();
  5420.                 return;
  5421.               }
  5422.  
  5423.               // TimerFnModA
  5424.  
  5425.               b = void 0 === b ? 0 : b;
  5426.               if (void 0 !== a) {
  5427.  
  5428.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  5429.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  5430.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  5431.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  5432.                   this.rafId = 1
  5433.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  5434.                   this.detlaSincePausedSecs = 0;
  5435.                   const ae = this._makeAnimator();
  5436.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  5437.  
  5438.                   // if (playerProgressChangedArg1 === null) {
  5439.                   //   console.log('startCountdownForTimerFnModA', this.data)
  5440.                   // }
  5441.  
  5442.                   if (isPlayProgressTriggered && this.isAnimationPaused !== true && this.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__) {
  5443.  
  5444.  
  5445.  
  5446.  
  5447.                     this.playerProgressSec = lastPlayerProgress > 0 ? lastPlayerProgress : 0; // save the progress first
  5448.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  5449.                     this.detlaSincePausedSecs = 0;
  5450.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  5451.  
  5452.                     relayPromise = relayPromise || new PromiseExternal();
  5453.  
  5454.                     relayPromise.then(() => {
  5455.                       if (this.isAttached === true && this.countdownDurationMs > 0 && this.isAnimationPaused === true && this.isReplayPaused !== true) {
  5456.                         this.isAnimationPaused = false;
  5457.                       }
  5458.                     });
  5459.  
  5460.  
  5461.                   }
  5462.  
  5463.  
  5464.  
  5465.                 }
  5466.               }
  5467.  
  5468.             } catch (e) {
  5469.               console.warn(e);
  5470.             }
  5471.  
  5472.           },
  5473.  
  5474.  
  5475.  
  5476.           /** @type {(a, b)} */
  5477.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  5478.             try {
  5479.               // a.durationSec [s] => countdownMs [ms]
  5480.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  5481.               // lastCountdownTimeMs => raf ongoing
  5482.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  5483.  
  5484.               if (this._r782) return;
  5485.  
  5486.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5487.                 this._throwOut();
  5488.                 return;
  5489.               }
  5490.  
  5491.               // TimerFnModT
  5492.  
  5493.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  5494.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5495.               b = void 0 === b ? 0 : b;
  5496.               void 0 !== a && (this.countdownMs = 1E3 * a,
  5497.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  5498.                 this.ratio = 1,
  5499.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  5500.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  5501.  
  5502.             } catch (e) {
  5503.               console.warn(e);
  5504.             }
  5505.  
  5506.           },
  5507.  
  5508.  
  5509.           /** @type {(a,)} */
  5510.           updateTimeoutForTimerFnModA: function (a) {
  5511.  
  5512.             try {
  5513.  
  5514.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5515.  
  5516.               if (this._r782) return;
  5517.  
  5518.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5519.                 this._throwOut();
  5520.                 return;
  5521.               }
  5522.  
  5523.               // TimerFnModA
  5524.  
  5525.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  5526.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  5527.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  5528.               }
  5529.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  5530.               if (this.isAttached && this.countdownMs) {
  5531.                 this.lastCountdownTimeMs = a
  5532.                 const ae = this._makeAnimator(); // request raf
  5533.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  5534.               } else {
  5535.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  5536.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  5537.                     this.slideDown()));
  5538.               }
  5539.  
  5540.             } catch (e) {
  5541.               console.warn(e);
  5542.             }
  5543.  
  5544.  
  5545.           },
  5546.  
  5547.           /** @type {(a,)} */
  5548.           updateTimeoutForTimerFnModT: function (a) {
  5549.  
  5550.             try {
  5551.  
  5552.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5553.  
  5554.               if (this._r782) return;
  5555.  
  5556.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5557.                 this._throwOut();
  5558.                 return;
  5559.               }
  5560.  
  5561.               // TimerFnModT
  5562.  
  5563.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  5564.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5565.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  5566.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  5567.               }
  5568.               // console.log(703, this.countdownMs)
  5569.               this.ratio = this.countdownMs / this.countdownDurationMs;
  5570.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  5571.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  5572.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  5573.                     this.slideDown()))
  5574.  
  5575.  
  5576.             } catch (e) {
  5577.               console.warn(e);
  5578.             }
  5579.           },
  5580.  
  5581.           /** @type {(a,b)} */
  5582.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  5583.  
  5584.             if (this._r782) return;
  5585.  
  5586.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5587.               this._throwOut();
  5588.               return;
  5589.             }
  5590.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  5591.             this._forceNoDetlaSincePausedSecs783 = 0;
  5592.  
  5593.             Promise.resolve().then(() => {
  5594.  
  5595.               if (a) {
  5596.  
  5597.                 if (this._runnerAE && this._runnerAE.playState === 'running') {
  5598.  
  5599.                   this._runnerAE.pause()
  5600.                   let lc = window.performance.now();
  5601.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  5602.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  5603.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  5604.                 }
  5605.  
  5606.               } else if (!a && b) {
  5607.  
  5608.  
  5609.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  5610.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  5611.                 this.detlaSincePausedSecs = 0;
  5612.                 this.updateTimeout(a);
  5613.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  5614.  
  5615.               }
  5616.  
  5617.  
  5618.             }).catch(e => {
  5619.               console.log(e);
  5620.             });
  5621.  
  5622.  
  5623.  
  5624.           },
  5625.  
  5626.  
  5627.           /** @type {(a,b)} */
  5628.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  5629.  
  5630.             if (this._r782) return;
  5631.  
  5632.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5633.               this._throwOut();
  5634.               return;
  5635.             }
  5636.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  5637.             this._forceNoDetlaSincePausedSecs783 = 0;
  5638.  
  5639.             Promise.resolve().then(() => {
  5640.  
  5641.               // TimerFnModT
  5642.  
  5643.               // ez++;
  5644.               // if(ez> 1e9) ez=9;
  5645.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5646.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  5647.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  5648.                   this.detlaSincePausedSecs = 0),
  5649.                 this.boundUpdateTimeout37_(a),
  5650.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  5651.  
  5652.  
  5653.             }).catch(e => {
  5654.               console.log(e);
  5655.             });
  5656.  
  5657.  
  5658.  
  5659.           },
  5660.  
  5661.  
  5662.           /** @type {(a,b)} */
  5663.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  5664.  
  5665.             if (this._r782) return;
  5666.  
  5667.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5668.               this._throwOut();
  5669.               return;
  5670.             }
  5671.  
  5672.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  5673.  
  5674.           },
  5675.  
  5676.  
  5677.  
  5678.           /** @type {()} */
  5679.           handlePauseReplayForPlaybackProgressState: function () {
  5680.             if (!playerEventsByIframeRelay) return this.handlePauseReplay66.apply(this, arguments);
  5681.  
  5682.             if (onPlayStateChangePromise) {
  5683.  
  5684.               if (this.rtu > 1e9) this.rtu = this.rtu % 1e4;
  5685.               const tid = ++this.rtu;
  5686.  
  5687.               onPlayStateChangePromise.then(() => {
  5688.                 if (tid === this.rtu && !onPlayStateChangePromise) this.handlePauseReplay.apply(this, arguments);
  5689.               });
  5690.  
  5691.               return;
  5692.             }
  5693.  
  5694.             if (playerState !== 2) return;
  5695.             if (this.isAttached) {
  5696.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  5697.               const tid = ++this.rtk;
  5698.               const tc = relayCount;
  5699.               foregroundPromiseFn().then(() => {
  5700.                 if (tid === this.rtk && tc === relayCount && playerState === 2 && _playerState === playerState) {
  5701.                   this.handlePauseReplay66();
  5702.                 }
  5703.  
  5704.               })
  5705.             }
  5706.           },
  5707.  
  5708.           /** @type {()} */
  5709.           handleResumeReplayForPlaybackProgressState: function () {
  5710.             if (!playerEventsByIframeRelay) return this.handleResumeReplay66.apply(this, arguments);
  5711.  
  5712.  
  5713.             if (onPlayStateChangePromise) {
  5714.  
  5715.               if (this.rtv > 1e9) this.rtv = this.rtv % 1e4;
  5716.               const tid = ++this.rtv;
  5717.  
  5718.               onPlayStateChangePromise.then(() => {
  5719.                 if (tid === this.rtv && !onPlayStateChangePromise) this.handleResumeReplay.apply(this, arguments);
  5720.               });
  5721.  
  5722.               return;
  5723.             }
  5724.  
  5725.  
  5726.             if (playerState !== 1) return;
  5727.             if (this.isAttached) {
  5728.               const tc = relayCount;
  5729.  
  5730.               relayPromise = relayPromise || new PromiseExternal();
  5731.               relayPromise.then(() => {
  5732.                 if (relayCount > tc && playerState === 1 && _playerState === playerState) {
  5733.                   this.handleResumeReplay66();
  5734.                 }
  5735.               });
  5736.             }
  5737.           },
  5738.  
  5739.           /** @type {(a,)} */
  5740.           handleReplayProgressForPlaybackProgressState: function (a) {
  5741.             if (this.isAttached) {
  5742.               const tid = ++this.rtk;
  5743.               foregroundPromiseFn().then(() => {
  5744.                 if (tid === this.rtk) {
  5745.                   this.handleReplayProgress66(a);
  5746.                 }
  5747.               })
  5748.             }
  5749.           }
  5750.  
  5751.  
  5752.         }
  5753.  
  5754.  
  5755.         for (const tag of tagsItemRenderer) { // ##tag##
  5756.           const dummy = document.createElement(tag);
  5757.  
  5758.           const cProto = getProto(dummy);
  5759.           if (!cProto || !cProto.attached) {
  5760.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5761.             continue;
  5762.           }
  5763.  
  5764.           cProto.attached77 = cProto.attached;
  5765.  
  5766.           cProto.attached = dProto.attachedForTickerInit;
  5767.  
  5768.           let rafHackState = 0;
  5769.  
  5770.           let isTimingFunctionHackable = false;
  5771.  
  5772.           let urt = 0;
  5773.  
  5774.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  5775.  
  5776.             // console.log('startCountdown', typeof cProto.startCountdown)
  5777.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  5778.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  5779.  
  5780.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  5781.  
  5782.           } else {
  5783.             console.log("ATTEMPT_ANIMATED_TICKER_BACKGROUND", ` ${tag}`, "Skip Timing Function Modification");
  5784.             continue;
  5785.           }
  5786.  
  5787.  
  5788.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  5789.  
  5790.             // cancelable - this.rafId < isAnimationPausedChanged >
  5791.             rafHackState = 1;
  5792.  
  5793.             if (isTimingFunctionHackable) {
  5794.               rafHackState = 2;
  5795.  
  5796.             } else {
  5797.               rafHackState = 4;
  5798.             }
  5799.  
  5800.           }
  5801.  
  5802.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  5803.  
  5804.           const doRAFHack = rafHackState === 2;
  5805.  
  5806.           cProto._throwOut = dProto._throwOut;
  5807.  
  5808.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  5809.  
  5810.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  5811.  
  5812.  
  5813.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  5814.  
  5815.  
  5816.  
  5817.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  5818.               urt++;
  5819.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  5820.             } else {
  5821.               console.log('Error for setting cProto.handlePauseReplay', tag)
  5822.             }
  5823.  
  5824.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  5825.               urt++;
  5826.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  5827.             } else {
  5828.               console.log('Error for setting cProto.handleResumeReplay', tag)
  5829.             }
  5830.  
  5831.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  5832.               urt++;
  5833.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  5834.             } else {
  5835.               console.log('Error for setting cProto.handleReplayProgress', tag)
  5836.             }
  5837.  
  5838.  
  5839.  
  5840.           }
  5841.  
  5842.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  5843.           cProto.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__ = ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED;
  5844.  
  5845.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  5846.  
  5847.             cProto.rtk = 0;
  5848.             cProto.rtu = 0;
  5849.             cProto.rtv = 0;
  5850.  
  5851.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  5852.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  5853.  
  5854.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  5855.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  5856.  
  5857.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  5858.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  5859.  
  5860.           }
  5861.  
  5862.           const doTimerFnModification = (doRAFHack || doAnimator);
  5863.  
  5864.           if (doAnimator && windowShownAt < 0) {
  5865.             windowShownAt = 0;
  5866.             setupEventForWindowShownAt();
  5867.           }
  5868.  
  5869.           if (doTimerFnModification) {
  5870.  
  5871.             cProto.startCountdown = (
  5872.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  5873.             );
  5874.  
  5875.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5876.             cProto.updateTimeout = (
  5877.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  5878.             );
  5879.  
  5880.  
  5881.             // let ez = 0;
  5882.             cProto.isAnimationPausedChanged = (
  5883.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  5884.             );
  5885.  
  5886.           }
  5887.  
  5888.           if (doAnimator) {
  5889.  
  5890.             const s = fnIntegrity(cProto.computeContainerStyle);
  5891.  
  5892.             if (s === '2.46.29') {
  5893.               // f.computeContainerStyle = function(a, b) {
  5894.               //     if (!a)
  5895.               //         return $h(kmb);
  5896.               //     var c = this.colorFromDecimal(a.startBackgroundColor);
  5897.               //     a = this.colorFromDecimal(a.endBackgroundColor);
  5898.               //     b = 100 * b + "%";
  5899.               //     return $h(lmb, c, c, b, a, b, a)
  5900.               // }
  5901.             } else if (s === '2.44.29' || s === '2.81.31') {
  5902.  
  5903.               //     var ofb = da([""])
  5904.               //         pfb = da("background:linear-gradient(90deg, {,{ {,{ {,{);".split("{"))
  5905.  
  5906.               // f.computeContainerStyle = function(a, b) {
  5907.               //     if (!a)
  5908.               //         return pi(ofb);
  5909.               //     var c = this.colorFromDecimal(a.startBackgroundColor);
  5910.               //     a = this.colorFromDecimal(a.endBackgroundColor);
  5911.               //     b = 100 * b + "%";
  5912.               //     return pi(pfb, c, c, b, a, b, a)
  5913.               // }
  5914.  
  5915.             } else {
  5916.               assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.46.29'));
  5917.             }
  5918.  
  5919.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  5920.  
  5921.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  5922.  
  5923.           }
  5924.  
  5925.           if (doTimerFnModification === true) hasTimerModified = true;
  5926.  
  5927.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  5928.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  5929.           }
  5930.  
  5931.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  5932.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  5933.           }
  5934.  
  5935.         }
  5936.  
  5937.         const selector = tags.join(', ');
  5938.         const elements = document.querySelectorAll(selector);
  5939.         if (elements.length >= 1) {
  5940.           for (const elm of elements) {
  5941.             if (insp(elm).isAttached === true) {
  5942.               fpTicker(elm);
  5943.             }
  5944.           }
  5945.         }
  5946.  
  5947.         console.log("[End]");
  5948.         console.groupEnd();
  5949.  
  5950.  
  5951.       }).catch(console.warn);
  5952.  
  5953.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  5954.  
  5955.         mightFirstCheckOnYtInit();
  5956.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  5957.         console.log("[Begin]");
  5958.         (() => {
  5959.  
  5960.           /* pending!!
  5961.  
  5962.           handleLiveChatAction
  5963.  
  5964.           removeTickerItemById
  5965.  
  5966.           _itemsChanged
  5967.           itemsChanged
  5968.  
  5969.           handleMarkChatItemAsDeletedAction
  5970.           handleMarkChatItemsByAuthorAsDeletedAction
  5971.           handleRemoveChatItemByAuthorAction
  5972.  
  5973.  
  5974.           */
  5975.  
  5976.           const tag = "yt-live-chat-ticker-renderer"
  5977.           const dummy = document.createElement(tag);
  5978.  
  5979.           const cProto = getProto(dummy);
  5980.           if (!cProto || !cProto.attached) {
  5981.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5982.             return;
  5983.           }
  5984.  
  5985.           const do_amend_ticker_handleLiveChatAction = AMEND_TICKER_handleLiveChatAction
  5986.             && typeof cProto.handleLiveChatAction === 'function' && !cProto.handleLiveChatAction45 && cProto.handleLiveChatAction.length === 1
  5987.             && typeof cProto.handleLiveChatActions === 'function' && !cProto.handleLiveChatActions45 && cProto.handleLiveChatActions.length === 1
  5988.             && typeof cProto.unshift === 'function' && cProto.unshift.length === 1
  5989.             && typeof cProto.handleMarkChatItemAsDeletedAction === 'function' && cProto.handleMarkChatItemAsDeletedAction.length === 1
  5990.             && typeof cProto.removeTickerItemById === 'function' && cProto.removeTickerItemById.length === 1
  5991.             && typeof cProto.handleMarkChatItemsByAuthorAsDeletedAction === 'function' && cProto.handleMarkChatItemsByAuthorAsDeletedAction.length === 1
  5992.             && typeof cProto.handleRemoveChatItemByAuthorAction === 'function' && cProto.handleRemoveChatItemByAuthorAction.length === 1
  5993.             ;
  5994.  
  5995.           console.log('do_amend_ticker_handleLiveChatAction', fnIntegrity(cProto.handleLiveChatAction), fnIntegrity(cProto.handleLiveChatActions))
  5996.  
  5997.  
  5998.           if (do_amend_ticker_handleLiveChatAction) {
  5999.  
  6000.  
  6001.             if (fnIntegrity(cProto.handleLiveChatActions) === '1.23.12') {
  6002.  
  6003.               console.log(`handleLiveChatActions`, 'modified');
  6004.  
  6005.               cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  6006.  
  6007.               cProto.handleLiveChatActions = function (a) {
  6008.                 /**
  6009.                  *
  6010.                     f.handleLiveChatActions = function(a) {
  6011.                         a.length && (a.forEach(this.handleLiveChatAction, this),
  6012.                         this.updateHighlightedItem(),
  6013.                         this.shouldAnimateIn = !0)
  6014.                     }
  6015.                  *
  6016.                  */
  6017.                 const len = a.length;
  6018.                 if (len) {
  6019.                   const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  6020.  
  6021.                   if (FIX_BATCH_TICKER_ORDER && len >= 2) {
  6022.  
  6023.                     // Primarily for the initial batch, this is due to replayBuffer._back.
  6024.                     const entries = [];
  6025.                     const entriesI = [];
  6026.                     for (let i = 0; i < len; i++) {
  6027.                       const item = ((a[i] || 0).addLiveChatTickerItemAction || 0).item || 0;
  6028.                       const timestampUsec = item ? parseInt(getTimestampUsec(item[firstObjectKey(item)]), 10) : 0;
  6029.                       if (timestampUsec > 0) {
  6030.                         entriesI.push(i);
  6031.                         binaryInsert(entries, { e: a[i], timestampUsec }, (a, b) => {
  6032.                           const diff = a.timestampUsec - b.timestampUsec;
  6033.                           return diff > 0.1 ? 1 : diff < -0.1 ? -1 : 0;
  6034.                         });
  6035.                       }
  6036.                     }
  6037.                     const mLen = entries.length;
  6038.                     if (mLen >= 2) {
  6039.                       for (let j = 0; j < mLen; j++) {
  6040.                         a[entriesI[j]] = entries[j].e;
  6041.                       }
  6042.                     }
  6043.                     entries.length = 0;
  6044.                     entriesI.length = 0;
  6045.                   }
  6046.                   for (const action of a) {
  6047.                     action.__batchId45__ = batchToken;
  6048.                     this.handleLiveChatAction(action);
  6049.                   }
  6050.                 }
  6051.               }
  6052.  
  6053.  
  6054.             }
  6055.  
  6056.  
  6057.             console.log(`handleLiveChatAction`, 'modified');
  6058.  
  6059.             const cacheChatActions = new LimitedSizeSet(16);
  6060.  
  6061.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  6062.  
  6063.             cProto.handleLiveChatAction = function (a) {
  6064.  
  6065.               const key = firstObjectKey(a);
  6066.               if (!key) return;
  6067.  
  6068.               const val = a[key];
  6069.               let itemKey = '';
  6070.               let itemId = '';
  6071.               const valItem = val ? val.item : null;
  6072.               if (valItem) {
  6073.                 itemKey = firstObjectKey(valItem);
  6074.                 if (itemKey) {
  6075.                   const itemVal = valItem[itemKey];
  6076.                   itemId = itemVal ? itemVal.id : '';
  6077.                   if (itemId) {
  6078.                     const cacheKey = `${key}.${itemKey}::${itemId}`;
  6079.                     if (key === 'addChatItemAction' && itemId) return; // no need
  6080.                     if (cacheChatActions.has(cacheKey)) {
  6081.                       console.log('handleLiveChatAction Repeated Item', cacheKey);
  6082.                       return;
  6083.                     } else {
  6084.                       cacheChatActions.add(cacheKey);
  6085.                     }
  6086.                   }
  6087.                 }
  6088.               }
  6089.               return this.handleLiveChatAction45(a);
  6090.             };
  6091.  
  6092.             console.log("AMEND_TICKER_handleLiveChatAction - OK (v2)");
  6093.  
  6094.           } else if (0 && do_amend_ticker_handleLiveChatAction
  6095.             && '|1.63.48|1.64.48|'.includes(`|${fnIntegrity(cProto.handleLiveChatAction)}|`)
  6096.             && fnIntegrity(cProto.handleLiveChatActions) === '1.23.12'
  6097.           ) {
  6098.  
  6099.             cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  6100.  
  6101.             cProto.handleLiveChatActions = function (a) {
  6102.               /**
  6103.                *
  6104.                   f.handleLiveChatActions = function(a) {
  6105.                       a.length && (a.forEach(this.handleLiveChatAction, this),
  6106.                       this.updateHighlightedItem(),
  6107.                       this.shouldAnimateIn = !0)
  6108.                   }
  6109.                *
  6110.                */
  6111.  
  6112.               if (a.length) {
  6113.                 const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  6114.                 const len = a.length;
  6115.                 if (FIX_BATCH_TICKER_ORDER && len >= 2) {
  6116.                   // Primarily for the initial batch, this is due to replayBuffer._back.
  6117.                   const entries = [];
  6118.                   const entriesI = [];
  6119.                   for (let i = 0; i < len; i++) {
  6120.                     const item = ((a[i] || 0).addLiveChatTickerItemAction || 0).item || 0;
  6121.                     if (item) {
  6122.                       const itemRendererKey = firstObjectKey(item);
  6123.                       const itemRenderer = item[itemRendererKey];
  6124.                       if (itemRenderer) {
  6125.                         let timestampUsec = getTimestampUsec(itemRenderer);
  6126.                         if (timestampUsec !== null) {
  6127.                           timestampUsec = parseInt(timestampUsec, 10);
  6128.                           if (timestampUsec > 0) {
  6129.                             entriesI.push(i);
  6130.                             entries.push({ e: a[i], timestampUsec })
  6131.                           }
  6132.                         }
  6133.                       }
  6134.                     }
  6135.                   }
  6136.                   const mLen = entries.length;
  6137.                   if (mLen >= 2) {
  6138.                     entries.sort((a, b) => {
  6139.                       const diff = a.timestampUsec - b.timestampUsec;
  6140.                       return diff > 0.1 ? 1 : diff < -0.1 ? -1 : 0;
  6141.                     });
  6142.                     for (let j = 0; j < mLen; j++) {
  6143.                       const i = entriesI[j];
  6144.                       a[i] = entries[j].e;
  6145.                     }
  6146.                   }
  6147.                   entries.length = 0;
  6148.                   entriesI.length = 0;
  6149.                 }
  6150.                 for (const action of a) {
  6151.                   action.__batchId45__ = batchToken;
  6152.                   this.handleLiveChatAction(action);
  6153.                 }
  6154.               }
  6155.             }
  6156.  
  6157.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  6158.  
  6159.             cProto._nszlv_ = 0;
  6160.             cProto._stackedLCAs_ = null;
  6161.             cProto._lastAddItem_ = null;
  6162.             cProto._lastAddItemInStack_ = false;
  6163.             cProto.handleLiveChatAction = function (a) {
  6164.  
  6165.               /**
  6166.                *
  6167.                *
  6168.                 f.handleLiveChatAction = function(a) {
  6169.                     var b = C(a, xO)
  6170.                       , c = C(a, yO)
  6171.                       , d = C(a, o1a)
  6172.                       , e = C(a, p1a);
  6173.                     a = C(a, A1a);
  6174.                     b ? this.unshift("items", b.item) : c ? this.handleMarkChatItemAsDeletedAction(c) : d ? this.removeTickerItemById(d.targetItemId) : e ? this.handleMarkChatItemsByAuthorAsDeletedAction(e) : a && this.handleRemoveChatItemByAuthorAction(a)
  6175.                 }
  6176.                *
  6177.                */
  6178.  
  6179.               // return this.handleLiveChatAction45(a)
  6180.               const { addChatItemAction, addLiveChatTickerItemAction, markChatItemAsDeletedAction,
  6181.                 removeChatItemAction, markChatItemsByAuthorAsDeletedAction, removeChatItemByAuthorAction, __batchId45__ } = a
  6182.  
  6183.               if (addChatItemAction) return;
  6184.               const d = Date.now();
  6185.  
  6186.               if (this._stackedLCAs_ === null) this._stackedLCAs_ = [];
  6187.               const stackArr = this._stackedLCAs_;
  6188.               let newStackEntry = null;
  6189.               if (addLiveChatTickerItemAction) {
  6190.                 let isDuplicated = false;
  6191.  
  6192.                 const newItem = addLiveChatTickerItemAction.item;
  6193.                 const tickerType = firstObjectKey(newItem);
  6194.                 if (!tickerType) return;
  6195.                 const tickerItem = newItem[tickerType];
  6196.                 const tickerId = tickerItem.id;
  6197.                 if (!tickerId) return;
  6198.  
  6199.                 if (this._lastAddItem_ && this._lastAddItem_.id === tickerId) {
  6200.                   let prevTickerItem = null;
  6201.                   if (this._lastAddItemInStack_) {
  6202.                     const entry = stackArr[stackArr.length - 1]; // only consider the last entry
  6203.                     if (entry && entry.action === 'addItem') {
  6204.                       prevTickerItem = entry.data; // only consider the first item;
  6205.                     }
  6206.                   } else {
  6207.                     prevTickerItem = this.items[0]; // only consider the first item;
  6208.                   }
  6209.                   if (prevTickerItem && prevTickerItem[tickerType]) {
  6210.                     if (prevTickerItem[tickerType].id === tickerId) {
  6211.                       isDuplicated = true;
  6212.                     }
  6213.                   }
  6214.                 }
  6215.                 if (!isDuplicated) {
  6216.                   this._lastAddItem_ = tickerItem;
  6217.                   this._lastAddItemInStack_ = true;
  6218.                   // console.log('newItem', newItem)
  6219.  
  6220.                   const item = newItem;
  6221.                   const key = firstObjectKey(item);
  6222.                   if (key) {
  6223.                     const itemRenderer = item[key] || 0;
  6224.                     if (itemRenderer.fullDurationSec > 0) {
  6225.                       itemRenderer.__actionAt__ = d;
  6226.                     }
  6227.                   }
  6228.  
  6229.                   newStackEntry = { action: 'addItem', data: newItem };
  6230.  
  6231.                 } else {
  6232.                   console.log('handleLiveChatAction Repeated Item', tickerItem.id, tickerItem); // happen in both live and playback. Reason Unknown.
  6233.                   return;
  6234.                 }
  6235.  
  6236.               } else {
  6237.                 markChatItemAsDeletedAction && (newStackEntry = { action: 'mcItemD', data: markChatItemAsDeletedAction });
  6238.                 removeChatItemAction && (newStackEntry = { action: 'removeItemById', data: removeChatItemAction.targetId });
  6239.                 markChatItemsByAuthorAsDeletedAction && (newStackEntry = { action: 'mcItemAD', data: markChatItemsByAuthorAsDeletedAction });
  6240.                 removeChatItemByAuthorAction && (newStackEntry = { action: 'removeItemA', data: removeChatItemByAuthorAction })
  6241.               }
  6242.  
  6243.  
  6244.               if (!newStackEntry) return;
  6245.               stackArr.push(newStackEntry);
  6246.  
  6247.  
  6248.               this._nszlv_++;
  6249.               if (this._nszlv_ > 1e9) this._nszlv_ = 9;
  6250.               const tid = this._nszlv_;
  6251.  
  6252.               newStackEntry.__batchId45__ = __batchId45__ || '';
  6253.               newStackEntry.dateTime = Date.now();
  6254.  
  6255.  
  6256.               foregroundPromiseFn().then(() => {
  6257.  
  6258.                 if (tid !== this._nszlv_) return;
  6259.                 const dateNow = Date.now(); // time difference to shift animation start time shall be considered. (pending)
  6260.                 const stackArr = this._stackedLCAs_.slice(0);
  6261.                 this._stackedLCAs_.length = 0;
  6262.                 this._lastAddItemInStack_ = false;
  6263.                 let lastDateTime = 0;
  6264.                 let prevBatchId = '';
  6265.                 const addItems = [];
  6266.                 // const previousShouldAnimateIn = this.shouldAnimateIn;
  6267.  
  6268.                 const addItemsFx = () => {
  6269.  
  6270.                   if (addItems.length >= 1) {
  6271.                     const eArr = addItems.slice(0);
  6272.                     addItems.length = 0;
  6273.                     if (ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME) {
  6274.  
  6275.                       const arr = []; // size of arr <= size of eArr
  6276.                       const d = Date.now();
  6277.                       for (const item of eArr) {
  6278.                         const key = firstObjectKey(item);
  6279.                         if (key) {
  6280.  
  6281.  
  6282.                           const itemRenderer = item[key] || 0;
  6283.                           const { durationSec, fullDurationSec, __actionAt__ } = itemRenderer;
  6284.                           if (__actionAt__ > 0 && durationSec > 0 && fullDurationSec > 0) {
  6285.  
  6286.  
  6287.                             const offset = d - __actionAt__;
  6288.                             if (offset > 0 && typeof durationSec === 'number' && typeof fullDurationSec === 'number' && fullDurationSec >= durationSec) {
  6289.                               const adjustedDurationSec = durationSec - Math.floor(offset / 1000);
  6290.                               if (adjustedDurationSec < durationSec) { // prevent NaN
  6291.                                 // console.log('adjustedDurationSec', adjustedDurationSec);
  6292.                                 if (adjustedDurationSec > 0) {
  6293.                                   // console.log('offset Sec', Math.floor(offset / 1000));
  6294.                                   itemRenderer.durationSec = adjustedDurationSec;
  6295.                                 } else {
  6296.                                   // if adjustedDurationSec equal 0 or invalid
  6297.                                   continue; // skip adding
  6298.                                 }
  6299.                               }
  6300.  
  6301.                             }
  6302.  
  6303.                           }
  6304.  
  6305.                           if (fullDurationSec > 0 && durationSec < 1) continue; // fallback check
  6306.  
  6307.  
  6308.  
  6309.                         }
  6310.                         arr.push(item)
  6311.                         // arr.unshift(item);
  6312.                       }
  6313.  
  6314.  
  6315.                       // console.log(arr.slice(0))
  6316.                       this.unshift("items", ...arr);
  6317.                     } else {
  6318.                       this.unshift("items", ...eArr);
  6319.                     }
  6320.                   }
  6321.                 }
  6322.  
  6323.                 for (const entry of stackArr) {
  6324.  
  6325.                   const { action, data, dateTime, __batchId45__ } = entry;
  6326.  
  6327.                   const finishLastAction = (
  6328.                     (prevBatchId !== __batchId45__ && prevBatchId)
  6329.                     || (dateNow - lastDateTime >= 1000 && dateNow - dateTime < 1000)
  6330.                   );
  6331.  
  6332.                   const addPrevItems = addItems.length >= 1 && (finishLastAction || action !== 'addItem');
  6333.                   lastDateTime = dateTime;
  6334.                   prevBatchId = __batchId45__;
  6335.  
  6336.                   if (addPrevItems) {
  6337.                     addItemsFx();
  6338.                   }
  6339.  
  6340.                   if (action === 'addItem') addItems.unshift(data);
  6341.                   else if (action === 'mcItemD') this.handleMarkChatItemAsDeletedAction(data);
  6342.                   else if (action === 'removeItemById') this.removeTickerItemById(data);
  6343.                   else if (action === 'mcItemAD') this.handleMarkChatItemsByAuthorAsDeletedAction(data);
  6344.                   else if (action === 'removeItemA') this.handleRemoveChatItemByAuthorAction(data);
  6345.  
  6346.                 }
  6347.  
  6348.                 addItemsFx();
  6349.               })
  6350.  
  6351.             }
  6352.  
  6353.             console.log("AMEND_TICKER_handleLiveChatAction - OK (v1)");
  6354.           } else {
  6355.             console.log("AMEND_TICKER_handleLiveChatAction - NG");
  6356.           }
  6357.  
  6358.           if (RAF_FIX_keepScrollClamped) {
  6359.  
  6360.             // to be improved
  6361.  
  6362.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  6363.  
  6364.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  6365.               cProto.keepScrollClamped = function () {
  6366.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  6367.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  6368.                 this.maybeClampScroll()
  6369.               }
  6370.  
  6371.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  6372.             } else {
  6373.  
  6374.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  6375.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  6376.             }
  6377.  
  6378.           }
  6379.  
  6380.  
  6381.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.43.31' && '|1.78.45|1.82.43|'.indexOf('|' + fnIntegrity(cProto.scrollIncrementally) + '|') >= 0) {
  6382.             // to be replaced by animator
  6383.  
  6384.             cProto.startScrolling = function (a) {
  6385.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  6386.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  6387.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  6388.               this.scrollRatePixelsPerSecond = a;
  6389.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  6390.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  6391.             };
  6392.  
  6393.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  6394.  
  6395.             // 2024.03.26
  6396.             // https://www.youtube.com/s/desktop/436f2749/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  6397.             /*
  6398.  
  6399.                 f.scrollIncrementally = function(a) {
  6400.                     var b = a - (this.lastFrameTimestamp || 0);
  6401.                     Q(this.hostElement).querySelector(this.tickerBarQuery).scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  6402.                     this.maybeClampScroll();
  6403.                     this.updateArrows();
  6404.                     this.lastFrameTimestamp = a;
  6405.                     0 < Q(this.hostElement).querySelector(this.tickerBarQuery).scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = window.requestAnimationFrame(this.scrollIncrementally.bind(this)) : this.stopScrolling()
  6406.                 }
  6407.             */
  6408.  
  6409.             cProto.__getTickerBarQuery__ = function () {
  6410.               const tickerBarQuery = this.tickerBarQuery === '#items' ? this.$.items : this.hostElement.querySelector(this.tickerBarQuery);
  6411.               return tickerBarQuery;
  6412.             }
  6413.  
  6414.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  6415.               const b = a - (this.lastFrameTimestamp || 0);
  6416.               const rate = this.scrollRatePixelsPerSecond
  6417.               const q = b / 1E3 * (rate || 0);
  6418.  
  6419.               const tickerBarQuery = this.__getTickerBarQuery__();
  6420.               const sl = tickerBarQuery.scrollLeft;
  6421.               // console.log(rate, sl, q)
  6422.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  6423.  
  6424.               } else if (q > -1e-5 && q < 1e-5) {
  6425.  
  6426.               } else {
  6427.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  6428.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  6429.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  6430.                 if (cond1 || cond2 || cond3) {
  6431.                   tickerBarQuery.scrollLeft += q;
  6432.                   this.maybeClampScroll();
  6433.                   this.updateArrows();
  6434.                 }
  6435.               }
  6436.  
  6437.               this.lastFrameTimestamp = a;
  6438.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  6439.               0 < tickerBarQuery.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  6440.             } : function (a) {
  6441.               const b = a - (this.lastFrameTimestamp || 0);
  6442.               const tickerBarQuery = this.__getTickerBarQuery__();
  6443.               tickerBarQuery.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  6444.               this.maybeClampScroll();
  6445.               this.updateArrows();
  6446.               this.lastFrameTimestamp = a;
  6447.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  6448.               0 < tickerBarQuery.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  6449.             };
  6450.  
  6451.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  6452.           } else {
  6453.             assertor(() => fnIntegrity(cProto.startScrolling, '1.43.31'));
  6454.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  6455.             console.log('cProto.startScrolling', cProto.startScrolling);
  6456.             console.log('cProto.scrollIncrementally', cProto.scrollIncrementally);
  6457.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  6458.           }
  6459.  
  6460.  
  6461.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  6462.  
  6463.             cProto.attached37 = cProto.attached;
  6464.             cProto.detached37 = cProto.detached;
  6465.  
  6466.             let naohzId = 0;
  6467.             cProto.__naohzId__ = 0;
  6468.             cProto.attached = function () {
  6469.               Promise.resolve().then(() => {
  6470.  
  6471.                 const hostElement = this.hostElement || this;
  6472.                 if (!(hostElement instanceof HTMLElement)) return;
  6473.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  6474.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  6475.                 // or #chat-messages
  6476.                 if (!ironPage) return;
  6477.  
  6478.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  6479.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  6480.                 this.__naohzId__ = ++naohzId;
  6481.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  6482.  
  6483.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  6484.  
  6485.               });
  6486.               return this.attached37.apply(this, arguments);
  6487.             };
  6488.             cProto.detached = function () {
  6489.               Promise.resolve().then(() => {
  6490.  
  6491.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  6492.                 if (!ironPage) return;
  6493.  
  6494.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  6495.  
  6496.               });
  6497.               return this.detached37.apply(this, arguments);
  6498.             };
  6499.  
  6500.             const clickFade = (u) => {
  6501.               u.click();
  6502.             };
  6503.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  6504.  
  6505.               const target = (evt || 0).target || 0;
  6506.               if (!target) return;
  6507.  
  6508.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  6509.                 const is = p.is;
  6510.                 if (typeof is === 'string' && is) {
  6511.  
  6512.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  6513.                     return;
  6514.                   }
  6515.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  6516.                     const fade = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  6517.                     if (fade) {
  6518.                       Promise.resolve(fade).then(clickFade);
  6519.                       evt && evt.stopPropagation();
  6520.                     }
  6521.                     return;
  6522.                   }
  6523.                   if (is !== 'yt-live-chat-ticker-renderer') {
  6524.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  6525.                     if (!is.endsWith('-renderer')) return;
  6526.                   }
  6527.  
  6528.                 } else {
  6529.                   if ((p.nodeName || '').includes('BUTTON')) return;
  6530.                 }
  6531.  
  6532.               }
  6533.             };
  6534.  
  6535.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  6536.  
  6537.           } else {
  6538.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  6539.           }
  6540.  
  6541.  
  6542.         })();
  6543.  
  6544.         console.log("[End]");
  6545.  
  6546.         console.groupEnd();
  6547.  
  6548.       }).catch(console.warn);
  6549.  
  6550.  
  6551.  
  6552.       if (ENABLE_RAF_HACK_INPUT_RENDERER || DELAY_FOCUSEDCHANGED) {
  6553.  
  6554.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  6555.  
  6556.           mightFirstCheckOnYtInit();
  6557.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  6558.           console.log("[Begin]");
  6559.           (() => {
  6560.  
  6561.  
  6562.  
  6563.             const tag = "yt-live-chat-message-input-renderer"
  6564.             const dummy = document.createElement(tag);
  6565.  
  6566.             const cProto = getProto(dummy);
  6567.             if (!cProto || !cProto.attached) {
  6568.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6569.               return;
  6570.             }
  6571.  
  6572.  
  6573.             if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  6574.  
  6575.               let doHack = false;
  6576.               if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  6577.  
  6578.                 // not cancellable
  6579.  
  6580.  
  6581.                 doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  6582.  
  6583.               }
  6584.  
  6585.               if (doHack) {
  6586.  
  6587.                 cProto.handleTimeout = function (a) {
  6588.                   console.log('cProto.handleTimeout', tag)
  6589.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  6590.                   this.timeoutDurationMs = this.timeoutMs = a;
  6591.                   this.countdownRatio = 1;
  6592.                   0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  6593.                 };
  6594.                 cProto.updateTimeout = function (a) {
  6595.                   console.log('cProto.updateTimeout', tag)
  6596.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  6597.                   this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  6598.                     this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  6599.                   this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  6600.                     rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  6601.                 };
  6602.  
  6603.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  6604.               } else {
  6605.  
  6606.                 console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  6607.                 console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  6608.  
  6609.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  6610.               }
  6611.  
  6612.  
  6613.             }
  6614.  
  6615.             if (DELAY_FOCUSEDCHANGED && typeof cProto.onFocusedChanged === 'function' && cProto.onFocusedChanged.length === 1 && !cProto.onFocusedChanged372) {
  6616.               cProto.onFocusedChanged372 = cProto.onFocusedChanged;
  6617.               cProto.onFocusedChanged = function (a) {
  6618.                 Promise.resolve().then(() => {
  6619.                   if (this.isAttached === true) this.onFocusedChanged372(a);
  6620.                 }).catch(console.warn);
  6621.               }
  6622.             }
  6623.  
  6624.           })();
  6625.  
  6626.           console.log("[End]");
  6627.  
  6628.           console.groupEnd();
  6629.  
  6630.  
  6631.         })
  6632.  
  6633.       }
  6634.  
  6635.  
  6636.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  6637.  
  6638.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  6639.  
  6640.           mightFirstCheckOnYtInit();
  6641.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  6642.           console.log("[Begin]");
  6643.           (() => {
  6644.  
  6645.             const tag = "yt-emoji-picker-renderer"
  6646.             const dummy = document.createElement(tag);
  6647.  
  6648.             const cProto = getProto(dummy);
  6649.             if (!cProto || !cProto.attached) {
  6650.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6651.               return;
  6652.             }
  6653.  
  6654.             let doHack = false;
  6655.             if (typeof cProto.animateScroll_ === 'function') {
  6656.  
  6657.               // not cancellable
  6658.               console.log('animateScroll_', typeof cProto.animateScroll_)
  6659.  
  6660.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  6661.  
  6662.             }
  6663.  
  6664.             if (doHack) {
  6665.  
  6666.               const querySelector = HTMLElement.prototype.querySelector;
  6667.               const U = (element) => ({
  6668.                 querySelector: (selector) => querySelector.call(element, selector)
  6669.               });
  6670.  
  6671.               cProto.animateScroll_ = function (a) {
  6672.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  6673.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  6674.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  6675.                 a -= this.lastAnimationTime_;
  6676.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  6677.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  6678.                     this.animationEnd_ = this.animationStart_ = null,
  6679.                     this.lastAnimationTime_ = 0);
  6680.                 this.updateButtons_()
  6681.               }
  6682.  
  6683.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  6684.             } else {
  6685.  
  6686.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  6687.             }
  6688.  
  6689.           })();
  6690.  
  6691.           console.log("[End]");
  6692.  
  6693.           console.groupEnd();
  6694.         });
  6695.       }
  6696.  
  6697.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  6698.  
  6699.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  6700.  
  6701.           mightFirstCheckOnYtInit();
  6702.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  6703.           console.log("[Begin]");
  6704.           (() => {
  6705.  
  6706.             const tag = "yt-live-chat-docked-message"
  6707.             const dummy = document.createElement(tag);
  6708.  
  6709.             const cProto = getProto(dummy);
  6710.             if (!cProto || !cProto.attached) {
  6711.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6712.               return;
  6713.             }
  6714.  
  6715.             let doHack = false;
  6716.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  6717.  
  6718.               // cancelable - this.intersectRAF <detached>
  6719.               // yt-live-chat-docked-message
  6720.               // boundCheckIntersections <-> checkIntersections
  6721.               // onDockableMessagesChanged
  6722.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  6723.  
  6724.               console.log('detached', typeof cProto.detached)
  6725.               console.log('checkIntersections', typeof cProto.checkIntersections)
  6726.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  6727.  
  6728.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  6729.  
  6730.             }
  6731.  
  6732.             if (doHack) {
  6733.  
  6734.               cProto.checkIntersections = function () {
  6735.                 // console.log('cProto.checkIntersections', tag)
  6736.                 if (this.dockableMessages.length) {
  6737.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  6738.                   let a = this.dockableMessages[0]
  6739.                     , b = this.hostElement.getBoundingClientRect();
  6740.                   a = a.getBoundingClientRect();
  6741.                   let c = a.top - b.top
  6742.                     , d = 8 >= c;
  6743.                   c = 8 >= c - this.hostElement.clientHeight;
  6744.                   if (d) {
  6745.                     let e;
  6746.                     for (; d;) {
  6747.                       e = this.dockableMessages.shift();
  6748.                       d = this.dockableMessages[0];
  6749.                       if (!d)
  6750.                         break;
  6751.                       d = d.getBoundingClientRect();
  6752.                       c = d.top - b.top;
  6753.                       let f = 8 >= c;
  6754.                       if (8 >= c - a.height)
  6755.                         if (f)
  6756.                           a = d;
  6757.                         else
  6758.                           return;
  6759.                       d = f
  6760.                     }
  6761.                     this.dock(e)
  6762.                   } else
  6763.                     c && this.dockedItem && this.clear()
  6764.                 } else
  6765.                   this.intersectRAF = 0
  6766.               }
  6767.  
  6768.               cProto.onDockableMessagesChanged = function () {
  6769.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  6770.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  6771.               }
  6772.  
  6773.               cProto.detached = function () {
  6774.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  6775.               }
  6776.  
  6777.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  6778.             } else {
  6779.  
  6780.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  6781.             }
  6782.  
  6783.           })();
  6784.  
  6785.           console.log("[End]");
  6786.  
  6787.           console.groupEnd();
  6788.  
  6789.         }).catch(console.warn);
  6790.  
  6791.       }
  6792.  
  6793.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  6794.  
  6795.         customElements.whenDefined("yt-img-shadow").then(() => {
  6796.  
  6797.           mightFirstCheckOnYtInit();
  6798.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  6799.           console.log("[Begin]");
  6800.           (() => {
  6801.  
  6802.             const tag = "yt-img-shadow"
  6803.             const dummy = document.createElement(tag);
  6804.  
  6805.             const cProto = getProto(dummy);
  6806.             if (!cProto || !cProto.attached) {
  6807.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6808.               return;
  6809.             }
  6810.  
  6811.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  6812.  
  6813.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  6814.               cProto.thumbnailChanged_ = function (a) {
  6815.  
  6816.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  6817.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  6818.  
  6819.                 return this.thumbnailChanged66_.apply(this, arguments)
  6820.  
  6821.               }
  6822.               console.log("cProto.thumbnailChanged_ - OK");
  6823.  
  6824.             } else {
  6825.               console.log("cProto.thumbnailChanged_ - NG");
  6826.  
  6827.             }
  6828.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  6829.  
  6830.               cProto.setSrc66_ = cProto.setSrc_;
  6831.               cProto.setSrc_ = function (a) {
  6832.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  6833.                 return this.setSrc66_.apply(this, arguments)
  6834.               }
  6835.  
  6836.               console.log("cProto.setSrc_ - OK");
  6837.             } else {
  6838.  
  6839.               console.log("cProto.setSrc_ - NG");
  6840.             }
  6841.  
  6842.           })();
  6843.  
  6844.           console.log("[End]");
  6845.  
  6846.           console.groupEnd();
  6847.  
  6848.         }).catch(console.warn);
  6849.  
  6850.       }
  6851.  
  6852.       if (FIX_THUMBNAIL_DATACHANGED) {
  6853.  
  6854.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  6855.  
  6856.           mightFirstCheckOnYtInit();
  6857.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  6858.           console.log("[Begin]");
  6859.           (() => {
  6860.  
  6861.             const tag = "yt-live-chat-author-badge-renderer"
  6862.             const dummy = document.createElement(tag);
  6863.  
  6864.             const cProto = getProto(dummy);
  6865.             if (!cProto || !cProto.attached) {
  6866.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6867.               return;
  6868.             }
  6869.  
  6870.  
  6871.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && '|1.163.100|1.162.100|1.160.97|1.159.97|'.includes(`|${fnIntegrity(cProto.dataChanged)}|`)) {
  6872.  
  6873.  
  6874.  
  6875.               cProto.dataChanged86 = cProto.dataChanged;
  6876.               cProto.dataChanged = function (a) {
  6877.  
  6878.                 /*
  6879.  
  6880.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  6881.                       b.removeChild(b.firstChild);
  6882.                   if (a)
  6883.                       if (a.icon) {
  6884.                           var c = document.createElement("yt-icon");
  6885.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  6886.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  6887.                           b.appendChild(c)
  6888.                       } else if (a.customThumbnail) {
  6889.                           c = document.createElement("img");
  6890.                           var d;
  6891.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6892.                           b.appendChild(c),
  6893.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  6894.                       }
  6895.  
  6896.                 */
  6897.  
  6898.  
  6899.                 /* 2024.04.20 */
  6900.                 /*
  6901.                   for (var b = Tx(N(this.hostElement).querySelector("#image")); b.firstChild; )
  6902.                       b.removeChild(b.firstChild);
  6903.                   if (a)
  6904.                       if (a.icon) {
  6905.                           var c = document.createElement("yt-icon");
  6906.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.polymerController.icon = "yt-sys-icons:shield-filled",
  6907.                           c.polymerController.defaultToFilled = !0) : c.polymerController.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  6908.                           b.appendChild(c)
  6909.                       } else if (a.customThumbnail) {
  6910.                           c = document.createElement("img");
  6911.                           var d;
  6912.                           (d = (d = WD(a.customThumbnail.thumbnails, 16)) ? Sb(ec(d)) : null) ? (c.src = d,
  6913.                           b.appendChild(c),
  6914.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : nr(new mn("Could not compute URL for thumbnail",a.customThumbnail))
  6915.                       }
  6916.                 */
  6917.  
  6918.                 const image = ((this || 0).$ || 0).image
  6919.                 if (image && a && image.firstElementChild) {
  6920.                   const exisiting = image.firstElementChild;
  6921.                   if (exisiting === image.lastElementChild) {
  6922.  
  6923.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  6924.  
  6925.                       const c = exisiting;
  6926.                       const t = insp(c);
  6927.                       const w = ('icon' in t || 'defaultToFilled' in t) ? t : c;
  6928.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  6929.                         if (w.icon !== "yt-sys-icons:shield-filled") w.icon = "yt-sys-icons:shield-filled";
  6930.                         if (w.defaultToFilled !== true) w.defaultToFilled = true;
  6931.                       } else {
  6932.                         const p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  6933.                         if (w.icon !== p) w.icon = p;
  6934.                         if (w.defaultToFilled !== false) w.defaultToFilled = false;
  6935.                       }
  6936.                       return;
  6937.  
  6938.  
  6939.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  6940.  
  6941.                       const c = exisiting;
  6942.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  6943.  
  6944.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  6945.                         return;
  6946.                       }
  6947.                       /*
  6948.  
  6949.                         var d;
  6950.                         (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6951.  
  6952.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  6953.                         */
  6954.                     }
  6955.  
  6956.                   }
  6957.                 }
  6958.                 return this.dataChanged86.apply(this, arguments)
  6959.  
  6960.               }
  6961.               console.log("cProto.dataChanged - OK");
  6962.  
  6963.             } else {
  6964.               assertor(() => fnIntegrity(cProto.dataChanged, '1.162.100'));
  6965.               console.log("cProto.dataChanged - NG");
  6966.  
  6967.             }
  6968.  
  6969.           })();
  6970.  
  6971.           console.log("[End]");
  6972.  
  6973.           console.groupEnd();
  6974.  
  6975.         }).catch(console.warn);
  6976.  
  6977.  
  6978.       }
  6979.  
  6980.  
  6981.       if (FIX_TOOLTIP_DISPLAY) {
  6982.  
  6983.         // ----------------------------------------------------------------------------------------------------
  6984.  
  6985.         const checkPDGet = (pd) => {
  6986.           return pd && pd.get && !pd.set && pd.enumerable && pd.configurable;
  6987.         }
  6988.  
  6989.         const tooltipUIWM = new WeakMap();
  6990.         const tooltipInitProps = {};
  6991.         const createTooltipIfRequired_ = function () {
  6992.           let r;
  6993.           if (tooltipUIWM.get(this) === void 0) {
  6994.             const w = document.createElement;
  6995.             let EU = null;
  6996.             tooltipUIWM.set(this, null);
  6997.             document.createElement = function () {
  6998.               let r = w.apply(this, arguments);
  6999.               EU = r;
  7000.               return r;
  7001.             };
  7002.             r = this.createTooltipIfRequired14_();
  7003.             document.createElement = w;
  7004.             if (EU instanceof HTMLElement && EU.is) {
  7005.               tooltipUIWM.set(this, EU);
  7006.  
  7007.               if (typeof EU.offset === 'number') tooltipInitProps['offset'] = EU.offset;
  7008.               if (typeof EU.fitToVisibleBounds === 'boolean') tooltipInitProps['fitToVisibleBounds'] = EU.fitToVisibleBounds;
  7009.               if (typeof EU.position === 'string') tooltipInitProps['position'] = EU.position;
  7010.               if (typeof EU.for === 'string') tooltipInitProps['for'] = EU.for;
  7011.  
  7012.               // this.__mcT__ = EU.outerHTML;
  7013.               // EU.__dataX = JSON.stringify(EU.__data);
  7014.               // EU.__dataY = Object.entries(EU);
  7015.  
  7016.               // <<< FOR DEBUG >>>
  7017.               // let kx;
  7018.               // Object.defineProperty(EU, '_target', {
  7019.               //   get(){
  7020.               //     return kx;
  7021.               //   },
  7022.               //   set(nv){
  7023.               //     kx= nv;
  7024.               //     debugger;
  7025.               //     return true;
  7026.               //   }
  7027.               // });
  7028.               // <<< FOR DEBUG >>>
  7029.  
  7030.               if (typeof Polymer !== 'undefined' && Polymer.__fixedGetOwnerRoot__ && Polymer.__fixedQuerySelector__) {
  7031.  
  7032.               } else {
  7033.                 let eProto = null;
  7034.                 const euCnt = insp(EU);
  7035.                 if (checkPDGet(Object.getOwnPropertyDescriptor(euCnt.constructor.prototype || {}, 'target'))) {
  7036.  
  7037.                   eProto = euCnt.constructor.prototype;
  7038.                 } else if (checkPDGet(Object.getOwnPropertyDescriptor(EU.constructor.prototype || {}, 'target'))) {
  7039.  
  7040.                   eProto = EU.constructor.prototype;
  7041.                 }
  7042.                 if (eProto) {
  7043.                   delete eProto.target;
  7044.                   /*
  7045.     
  7046.                       get target() {
  7047.                           var a = Pv(this).parentNode, b = Pv(this).getOwnerRoot(), c;
  7048.                           this.for ? c = Pv(b).querySelector("#" + this.for) : c = a.nodeType == Node.DOCUMENT_FRAGMENT_NODE ? b.host : a;
  7049.                           return c
  7050.                       },
  7051.                   */
  7052.                   Object.defineProperty(eProto, 'target', {
  7053.                     get() {
  7054.                       let a = this.parentNode, b = this.getRootNode();
  7055.                       return (this.for ? b.querySelector("#" + this.for) : a)
  7056.                     }
  7057.                   })
  7058.                 }
  7059.               }
  7060.               // setInterval(()=>EU.updatePosition(), 100)
  7061.  
  7062.             } else {
  7063.               tooltipUIWM.set(this, null);
  7064.             }
  7065.           } else {
  7066.             r = this.createTooltipIfRequired14_();
  7067.           }
  7068.  
  7069.           const EU = tooltipUIWM.get(this);
  7070.           if (EU) {
  7071.             EU.remove();
  7072.             if (typeof tooltipInitProps.offset === 'number') EU['offset'] = tooltipInitProps.offset;
  7073.             if (typeof tooltipInitProps.fitToVisibleBounds === 'boolean') EU['fitToVisibleBounds'] = tooltipInitProps.fitToVisibleBounds;
  7074.             try {
  7075.               if (typeof tooltipInitProps.position === 'string') EU['position'] = tooltipInitProps.position;
  7076.               if (typeof tooltipInitProps.for === 'string') EU['for'] = tooltipInitProps.for; else delete EU.for;
  7077.             } catch (e) { }
  7078.           }
  7079.           return r;
  7080.         };
  7081.  
  7082.  
  7083.         // added in 2024.05.02
  7084.         getLCRDummy().then(async (lcrDummy) => {
  7085.  
  7086.           // console.log(8171, 99);
  7087.           const tag = "yt-live-chat-renderer"
  7088.           const dummy = lcrDummy;
  7089.  
  7090.           const cProto = getProto(dummy);
  7091.           if (!cProto || !cProto.attached) {
  7092.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7093.             return;
  7094.           }
  7095.  
  7096.           /*
  7097.           <tp-yt-paper-tooltip class="style-scope yt-live-chat-author-badge-renderer" role="tooltip" tabindex="-1" style="--paper-tooltip-delay-in: 0ms; inset: -63.3984px auto auto 0px;
  7098.           */
  7099.  
  7100.           if (cProto && typeof cProto.createTooltipIfRequired_ === 'function' && cProto.createTooltipIfRequired_.length === 0 && !cProto.createTooltipIfRequired14_) {
  7101.             cProto.createTooltipIfRequired14_ = cProto.createTooltipIfRequired_;
  7102.             cProto.createTooltipIfRequired_ = createTooltipIfRequired_;
  7103.           }
  7104.  
  7105.         });
  7106.  
  7107.         // ----------------------------------------------------------------------------------------------------
  7108.  
  7109.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  7110.  
  7111.           mightFirstCheckOnYtInit();
  7112.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  7113.           console.log("[Begin]");
  7114.           (() => {
  7115.  
  7116.             const tag = "tp-yt-paper-tooltip"
  7117.             const dummy = document.createElement(tag);
  7118.  
  7119.             const cProto = getProto(dummy);
  7120.             if (!cProto || !cProto.attached) {
  7121.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7122.               return;
  7123.             }
  7124.  
  7125.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  7126.  
  7127.               cProto._readyClients43 = cProto._readyClients;
  7128.               cProto._readyClients = function () {
  7129.                 // console.log(1238)
  7130.  
  7131.                 let r = cProto._readyClients43.apply(this, arguments);
  7132.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  7133.                 return r;
  7134.               }
  7135.  
  7136.               console.log("_readyClients - OK");
  7137.  
  7138.             } else {
  7139.               console.log("_readyClients - NG");
  7140.  
  7141.             }
  7142.  
  7143.             if (typeof cProto.show === 'function' && !cProto.show17) {
  7144.               cProto.show17 = cProto.show;
  7145.               cProto.show = function () {
  7146.  
  7147.                 let r = this.show17.apply(this, arguments);
  7148.                 this._showing === true && Promise.resolve().then(() => {
  7149.                   const tooltip = (this.$ || 0).tooltip;
  7150.  
  7151.                   if (tooltip && tooltip.firstElementChild === null) {
  7152.                     let text = tooltip.textContent;
  7153.                     if (typeof text === 'string' && text.length >= 2) {
  7154.                       tooltip.textContent = text.trim();
  7155.                     }
  7156.                   }
  7157.                 }).catch(console.warn)
  7158.                 return r;
  7159.               }
  7160.  
  7161.               console.log("trim tooltip content - OK");
  7162.  
  7163.             } else {
  7164.               console.log("trim tooltip content - NG");
  7165.  
  7166.             }
  7167.  
  7168.  
  7169.           })();
  7170.  
  7171.           console.log("[End]");
  7172.  
  7173.           console.groupEnd();
  7174.  
  7175.         }).catch(console.warn);
  7176.  
  7177.       }
  7178.  
  7179.  
  7180.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  7181.  
  7182.         const hookDocumentMouseDownSetupFn = () => {
  7183.  
  7184.           let muzTimestamp = 0;
  7185.           let nszDropdown = null;
  7186.  
  7187.           const handlerObject = {
  7188.  
  7189.             muHandler282: function (evt) {
  7190.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  7191.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  7192.               const dropdown = nszDropdown;
  7193.               muzTimestamp = 0;
  7194.               nszDropdown = null;
  7195.  
  7196.               const kurMPCe = kRef(currentMenuPivotWR) || 0;
  7197.               const hostElement = kurMPCe.hostElement || kurMPCe; // should be always hostElement === kurMPCe ?
  7198.               if (!hostElement.hasAttribute('menu-visible')) return;
  7199.  
  7200.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  7201.               if (chatBanner) return;
  7202.  
  7203.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  7204.                 muzTimestamp = Date.now();
  7205.                 evt.stopImmediatePropagation();
  7206.                 evt.stopPropagation();
  7207.                 Promise.resolve(dropdown).then((dropdown) => {
  7208.                   dropdown.cancel();
  7209.                 });
  7210.               }
  7211.  
  7212.             },
  7213.  
  7214.             mlHandler282: function (evt) {
  7215.               muzTimestamp = 0;
  7216.               nszDropdown = null;
  7217.             },
  7218.  
  7219.             ckHandler282: function (evt) {
  7220.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  7221.               if (Date.now() - muzTimestamp < 40) {
  7222.                 muzTimestamp = Date.now();
  7223.                 evt.stopImmediatePropagation();
  7224.                 evt.stopPropagation();
  7225.               }
  7226.             },
  7227.  
  7228.             tapHandler282: function (evt) {
  7229.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  7230.               if (Date.now() - muzTimestamp < 40) {
  7231.                 muzTimestamp = Date.now();
  7232.                 evt.stopImmediatePropagation();
  7233.                 evt.stopPropagation();
  7234.               }
  7235.             },
  7236.  
  7237.             handleEvent(evt) {
  7238.               if (evt) {
  7239.                 const kurMPCe = kRef(currentMenuPivotWR) || 0;
  7240.                 const kurMPCc = insp(kurMPCe);
  7241.                 const hostElement = kurMPCc.hostElement || kurMPCc;
  7242.                 if (!kurMPCc || kurMPCc.isAttached !== true || hostElement.isConnected !== true) return;
  7243.                 switch (evt.type) {
  7244.                   case 'mouseup':
  7245.                     return this.muHandler282(evt);
  7246.                   case 'mouseleave':
  7247.                     return this.mlHandler282(evt);
  7248.                   case 'tap':
  7249.                     return this.tapHandler282(evt);
  7250.                   case 'click':
  7251.                     return this.ckHandler282(evt);
  7252.                 }
  7253.               }
  7254.             }
  7255.  
  7256.           }
  7257.  
  7258.           document.addEventListener('mousedown', function (evt) {
  7259.  
  7260.             if (!evt || !evt.isTrusted || !evt.target) return;
  7261.  
  7262.             muzTimestamp = 0;
  7263.             nszDropdown = null;
  7264.  
  7265.             /** @type {HTMLElement | null} */
  7266.             const kurMP = kRef(currentMenuPivotWR);
  7267.             if (!kurMP) return;
  7268.             const kurMPCe = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0; // element
  7269.  
  7270.             if (!kurMPCe || !kurMPCe.hasAttribute('whole-message-clickable')) return;
  7271.  
  7272.             const kurMPCc = insp(kurMPCe); // controller
  7273.  
  7274.             if (!kurMPCc.isClickableChatRow111 || !kurMPCc.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPCe, evt.target)) return;
  7275.  
  7276.             const chatBanner = HTMLElement.prototype.closest.call(kurMPCe, 'yt-live-chat-banner-renderer') || 0;
  7277.             if (chatBanner) return;
  7278.  
  7279.             let targetDropDown = null;
  7280.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  7281.               if (dropdown && dropdown.positionTarget === kurMP) {
  7282.                 targetDropDown = dropdown;
  7283.               }
  7284.             }
  7285.  
  7286.             if (!targetDropDown) return;
  7287.  
  7288.             if ((nszDropdown = targetDropDown)) {
  7289.               muzTimestamp = Date.now();
  7290.               evt.stopImmediatePropagation();
  7291.               evt.stopPropagation();
  7292.               currentMenuPivotWR = mWeakRef(kurMPCe);
  7293.  
  7294.               const listenOpts = { capture: true, passive: false, once: true };
  7295.  
  7296.               // remove unexcecuted eventHandler
  7297.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  7298.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  7299.               document.removeEventListener('tap', handlerObject, listenOpts);
  7300.               document.removeEventListener('click', handlerObject, listenOpts);
  7301.  
  7302.               // inject one time eventHandler to by pass events
  7303.               document.addEventListener('mouseup', handlerObject, listenOpts);
  7304.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  7305.               document.addEventListener('tap', handlerObject, listenOpts);
  7306.               document.addEventListener('click', handlerObject, listenOpts);
  7307.  
  7308.             }
  7309.  
  7310.           }, true);
  7311.  
  7312.         }
  7313.  
  7314.  
  7315.         // yt-live-chat-paid-message-renderer ??
  7316.  
  7317.         /*
  7318.  
  7319.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  7320.  
  7321.  
  7322.         "yt-live-chat-ticker-paid-message-item-renderer"
  7323.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  7324.         "yt-live-chat-paid-message-renderer"
  7325.         "yt-live-chat-text-message-renderer"
  7326.         "yt-live-chat-paid-sticker-renderer"
  7327.  
  7328.         */
  7329.  
  7330.  
  7331.         whenDefinedMultiple([
  7332.  
  7333.           "yt-live-chat-paid-message-renderer",
  7334.           "yt-live-chat-membership-item-renderer",
  7335.           "yt-live-chat-paid-sticker-renderer",
  7336.           "yt-live-chat-text-message-renderer",
  7337.           "yt-live-chat-auto-mod-message-renderer",
  7338.  
  7339.           /*
  7340.           "yt-live-chat-ticker-paid-message-item-renderer",
  7341.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  7342.           "yt-live-chat-paid-message-renderer",
  7343.           "yt-live-chat-text-message-renderer",
  7344.           "yt-live-chat-paid-sticker-renderer",
  7345.  
  7346.           "yt-live-chat-ticker-sponsor-item-renderer",
  7347.           "yt-live-chat-banner-header-renderer",
  7348.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  7349.           "ytd-sponsorships-live-chat-header-renderer",
  7350.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  7351.  
  7352.  
  7353.  
  7354.  
  7355.           "yt-live-chat-auto-mod-message-renderer",
  7356.           "yt-live-chat-text-message-renderer",
  7357.           "yt-live-chat-paid-message-renderer",
  7358.  
  7359.           "yt-live-chat-legacy-paid-message-renderer",
  7360.           "yt-live-chat-membership-item-renderer",
  7361.           "yt-live-chat-paid-sticker-renderer",
  7362.           "yt-live-chat-donation-announcement-renderer",
  7363.           "yt-live-chat-moderation-message-renderer",
  7364.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  7365.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  7366.           "yt-live-chat-viewer-engagement-message-renderer",
  7367.  
  7368.           */
  7369.  
  7370.  
  7371.         ]).then(sTags => {
  7372.  
  7373.  
  7374.           mightFirstCheckOnYtInit();
  7375.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  7376.           console.log("[Begin]");
  7377.           let doMouseHook = false;
  7378.  
  7379.           const dProto = {
  7380.             isClickableChatRow111: function () {
  7381.               return (
  7382.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  7383.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  7384.               ); // follow .onItemTap(a)
  7385.             }
  7386.           };
  7387.  
  7388.           for (const sTag of sTags) { // ##tag##
  7389.  
  7390.  
  7391.             (() => {
  7392.  
  7393.               const tag = sTag;
  7394.               const dummy = document.createElement(tag);
  7395.  
  7396.               const cProto = getProto(dummy);
  7397.               if (!cProto || !cProto.attached) {
  7398.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  7399.                 return;
  7400.               }
  7401.  
  7402.               const dCnt = insp(dummy);
  7403.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  7404.  
  7405.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  7406.  
  7407.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  7408.  
  7409.                 if (toHookDocumentMouseDown) {
  7410.                   doMouseHook = true;
  7411.                 }
  7412.  
  7413.                 console.log("shouldSupportWholeItemClick Y", tag);
  7414.  
  7415.               } else {
  7416.  
  7417.                 console.log("shouldSupportWholeItemClick N", tag);
  7418.               }
  7419.  
  7420.  
  7421.             })();
  7422.  
  7423.           }
  7424.  
  7425.  
  7426.           if (doMouseHook) {
  7427.  
  7428.             hookDocumentMouseDownSetupFn();
  7429.  
  7430.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  7431.           }
  7432.  
  7433.           console.log("[End]");
  7434.  
  7435.           console.groupEnd();
  7436.  
  7437.  
  7438.         }).catch(console.warn);
  7439.  
  7440.  
  7441.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  7442.  
  7443.  
  7444.       }
  7445.  
  7446.       if (NO_ITEM_TAP_FOR_NON_STATIONARY_TAP) {
  7447.         let targetElementCntWR = null;
  7448.         let _e0 = null;
  7449.         document.addEventListener('mousedown', (e) => {
  7450.           if (!e || !e.isTrusted) return;
  7451.           let element = e.target;
  7452.           for (; element instanceof HTMLElement; element = element.parentNode) {
  7453.             if (element.is) break;
  7454.           }
  7455.           if (!element || !element.is) return;
  7456.           const cnt = insp(element);
  7457.           if (typeof cnt.onItemTap === 'function') {
  7458.             cnt._onItemTap_isNonStationary = 0;
  7459.             const cProto = getProto(element);
  7460.             if (!cProto.onItemTap366 && typeof cProto.onItemTap === 'function' && cProto.onItemTap.length === 1) {
  7461.               cProto.onItemTap366 = cProto.onItemTap;
  7462.               cProto.onItemTap = function (a) {
  7463.                 const t = this._onItemTap_isNonStationary;
  7464.                 this._onItemTap_isNonStationary = 0;
  7465.                 if (t > Date.now()) return;
  7466.                 return this.onItemTap366.apply(this, arguments)
  7467.               }
  7468.             }
  7469.             _e0 = e;
  7470.             targetElementCntWR = mWeakRef(cnt);
  7471.           } else {
  7472.             _e0 = null;
  7473.             targetElementCntWR = null;
  7474.           }
  7475.         }, { capture: true, passive: true });
  7476.  
  7477.         document.addEventListener('mouseup', (e) => {
  7478.           if (!e || !e.isTrusted) return;
  7479.           const e0 = _e0;
  7480.           _e0 = null;
  7481.           if (!e0) return;
  7482.           const cnt = kRef(targetElementCntWR);
  7483.           targetElementCntWR = null;
  7484.           if (!cnt) return;
  7485.           if (e.timeStamp - e0.timeStamp > TAP_ACTION_DURATION) {
  7486.             cnt._onItemTap_isNonStationary = Date.now() + 40;
  7487.           } else if ((window.getSelection() + "").trim().replace(/[\u2000-\u200a\u202f\u2800\u200B\u200C\u200D\uFEFF]+/g, '').length >= 1) {
  7488.             cnt._onItemTap_isNonStationary = Date.now() + 40;
  7489.           } else {
  7490.             const dx = e.clientX - e0.clientX;
  7491.             const dy = e.clientY - e0.clientY;
  7492.             const dd = Math.sqrt(dx * dx + dy * dy);
  7493.             const ddmm = px2mm(dd);
  7494.             if (ddmm > 1.0) {
  7495.               cnt._onItemTap_isNonStationary = Date.now() + 40;
  7496.             } else {
  7497.               cnt._onItemTap_isNonStationary = 0;
  7498.             }
  7499.           }
  7500.         }, { capture: true, passive: true });
  7501.  
  7502.       }
  7503.  
  7504.  
  7505.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  7506.  
  7507.         let rr = null;
  7508.         const p1 = new Promise(resolve => {
  7509.           rr = resolve;
  7510.         });
  7511.  
  7512.         const p1unlock = () => {
  7513.           const f = rr;
  7514.           if (f) {
  7515.             rr = null;
  7516.             f();
  7517.           }
  7518.         }
  7519.  
  7520.         return {
  7521.           p1,
  7522.           p1unlock,
  7523.           assignLock: (targetCnt, timeout) => {
  7524.             targetCnt.__showContextMenu_assign_lock__(p1);
  7525.             if (timeout) setTimeout(p1unlock, timeout);
  7526.           }
  7527.         }
  7528.  
  7529.       }
  7530.  
  7531.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  7532.  
  7533.         document.addEventListener('mousedown', function (evt) {
  7534.  
  7535.           const maxloopDOMTreeElements = 4;
  7536.           const maxloopYtCompontents = 4;
  7537.           let j1 = 0;
  7538.           let j2 = 0;
  7539.           let target = (evt || 0).target || 0;
  7540.           if (!target) return;
  7541.  
  7542.  
  7543.           while (target instanceof HTMLElement) {
  7544.             if (++j1 > maxloopDOMTreeElements) break;
  7545.             if (typeof (target.is || insp(target).is || null) === 'string') break;
  7546.             target = nodeParent(target);
  7547.           }
  7548.           const components = [];
  7549.           while (target instanceof HTMLElement) {
  7550.             if (++j2 > maxloopYtCompontents) break;
  7551.             const cnt = insp(target);
  7552.             if (typeof (target.is || cnt.is || null) === 'string') {
  7553.               components.push(target);
  7554.             }
  7555.             if (typeof cnt.showContextMenu === 'function') break;
  7556.             target = target.parentComponent || cnt.parentComponent || null;
  7557.           }
  7558.           if (!(target instanceof HTMLElement)) return;
  7559.           const targetCnt = insp(target);
  7560.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  7561.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  7562.             return;
  7563.           }
  7564.  
  7565.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  7566.           if (!endpoint) return;
  7567.           if (targetCnt.opened || !targetCnt.isAttached) return;
  7568.  
  7569.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  7570.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  7571.           }
  7572.  
  7573.           const targetDollar = indr(target);
  7574.  
  7575.           let doPreRequest = false;
  7576.           if (components.length >= 2 && components[0].id === 'menu-button' && (targetDollar || 0)['menu-button'] === components[0]) {
  7577.             doPreRequest = true;
  7578.           } else if (components.length === 1 && components[0] === target) {
  7579.             doPreRequest = true;
  7580.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (targetDollar || 0)['author-photo'] === components[0]) {
  7581.             doPreRequest = true;
  7582.           }
  7583.           if (doPreRequest === false) {
  7584.             console.log('doPreRequest = fasle on showContextMenu', components);
  7585.             return;
  7586.           }
  7587.  
  7588.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  7589.  
  7590.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  7591.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  7592.             return;
  7593.           }
  7594.  
  7595.  
  7596.           const onSuccess = (a) => {
  7597.             /*
  7598.  
  7599.               dQ() && (a = a.response);
  7600.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  7601.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  7602.  
  7603.             */
  7604.  
  7605.             a = a.response || a;
  7606.  
  7607.             if (!a) {
  7608.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  7609.               return;
  7610.             }
  7611.  
  7612.             let z = null;
  7613.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  7614.  
  7615.             if (z) {
  7616.               a = z;
  7617.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  7618.             }
  7619.  
  7620.           };
  7621.           const onFailure = (a) => {
  7622.  
  7623.             /*
  7624.  
  7625.               if (a instanceof Error || a instanceof Object || a instanceof String)
  7626.                   var b = a;
  7627.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  7628.  
  7629.             */
  7630.  
  7631.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  7632.             // console.log('onFailure', a)
  7633.  
  7634.           };
  7635.  
  7636.           if (doPreRequest) {
  7637.  
  7638.             let propertyCounter = 0;
  7639.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  7640.             const p1Timeout = 800;
  7641.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  7642.  
  7643.             try {
  7644.  
  7645.               const onSuccessHelperFn = function () {
  7646.                 pm1.p1unlock();
  7647.                 if (propertyCounter !== 5) {
  7648.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  7649.                   return;
  7650.                 }
  7651.                 if (this[proxyKey] !== targetCnt) {
  7652.                   console.log('Error in prerequest for showContextMenu.this');
  7653.                   return;
  7654.                 }
  7655.                 onSuccess(...arguments);
  7656.               };
  7657.               const onFailureHelperFn = function () {
  7658.                 pm1.p1unlock();
  7659.                 if (propertyCounter !== 5) {
  7660.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  7661.                   return;
  7662.                 }
  7663.                 if (this[proxyKey] !== targetCnt) {
  7664.                   console.log('Error in prerequest for showContextMenu.this');
  7665.                   return;
  7666.                 }
  7667.                 onFailure(...arguments);
  7668.  
  7669.               }
  7670.               const fakeTargetCnt = new Proxy({
  7671.                 __showContextMenu_forceNativeRequest__: 1,
  7672.                 __showContextMenu_sync_mode_request__: 1,
  7673.                 get handleGetContextMenuResponse_() {
  7674.                   propertyCounter += 2;
  7675.                   return onSuccessHelperFn;
  7676.                 },
  7677.                 get handleGetContextMenuError() {
  7678.                   propertyCounter += 3;
  7679.                   return onFailureHelperFn;
  7680.                 }
  7681.               }, {
  7682.                 get(_, key, receiver) {
  7683.                   if (key in _) return _[key];
  7684.                   if (key === proxyKey) return targetCnt;
  7685.  
  7686.                   let giveNative = false;
  7687.                   if (key in targetCnt) {
  7688.                     if (key === 'data') giveNative = true;
  7689.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  7690.                   }
  7691.                   if (giveNative) return targetCnt[key];
  7692.                 }
  7693.               });
  7694.  
  7695.               const fakeEvent = (() => {
  7696.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  7697.                 const nf = function () { }
  7698.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  7699.  
  7700.                 return {
  7701.                   type: 'tap',
  7702.                   eventPhase: 0,
  7703.                   isTrusted: false,
  7704.                   __composed: true,
  7705.                   bubbles, cancelable, cancelBubble, timeStamp,
  7706.                   target, srcElement, defaultPrevented, currentTarget, composed,
  7707.                   stopPropagation, stopImmediatePropagation, preventDefault
  7708.                 };
  7709.               })(evt);
  7710.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  7711.  
  7712.  
  7713.             } catch (e) {
  7714.               console.warn(e);
  7715.               propertyCounter = 7;
  7716.  
  7717.             }
  7718.             if (propertyCounter !== 5) {
  7719.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  7720.               return;
  7721.             }
  7722.  
  7723.             pm1.assignLock(targetCnt, p1Timeout);
  7724.  
  7725.           }
  7726.  
  7727.  
  7728.  
  7729.  
  7730.  
  7731.  
  7732.         }, true);
  7733.  
  7734.  
  7735.       }
  7736.  
  7737.  
  7738.  
  7739.       /*
  7740.  
  7741.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  7742.  
  7743.       */
  7744.  
  7745.       whenDefinedMultiple([
  7746.         "yt-live-chat-ticker-sponsor-item-renderer",
  7747.         "yt-live-chat-banner-header-renderer",
  7748.         "yt-live-chat-text-message-renderer",
  7749.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  7750.         "ytd-sponsorships-live-chat-header-renderer",
  7751.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  7752.  
  7753.         "yt-live-chat-paid-sticker-renderer",
  7754.         "yt-live-chat-viewer-engagement-message-renderer",
  7755.         "yt-live-chat-paid-message-renderer"
  7756.  
  7757.  
  7758.  
  7759.  
  7760.       ]).then(sTags => {
  7761.  
  7762.         mightFirstCheckOnYtInit();
  7763.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  7764.         console.log("[Begin]");
  7765.  
  7766.  
  7767.         const __showContextMenu_mutex__ = new Mutex();
  7768.         let __showContextMenu_mutex_unlock__ = null;
  7769.         let lastShowMenuTarget = null;
  7770.  
  7771.  
  7772.  
  7773.  
  7774.         const wm37 = new WeakMap();
  7775.  
  7776.         const dProto = {
  7777.  
  7778.  
  7779.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  7780.  
  7781.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  7782.             if (a) {
  7783.               if (doDeepCopy) a = deepCopy(a);
  7784.               wm37.set(endpoint, a);
  7785.             } else {
  7786.               wm37.remove(endpoint);
  7787.             }
  7788.           },
  7789.           __getCachedEndpointData__: function (endpoint) {
  7790.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  7791.             if (endpoint) return wm37.get(endpoint);
  7792.             return null;
  7793.           },
  7794.           /** @type {(resolvedEndpoint: any) => void 0} */
  7795.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  7796.  
  7797.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  7798.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  7799.             Promise.resolve(resolvedEndpoint).then(() => {
  7800.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  7801.               this.showContextMenu_(resolvedEndpoint);
  7802.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  7803.             });
  7804.  
  7805.  
  7806.           },
  7807.  
  7808.  
  7809.  
  7810.           showContextMenuForCacheReopen: function (a) {
  7811.             if (!this.__showContextMenu_forceNativeRequest__) {
  7812.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  7813.               if (endpoint) {
  7814.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  7815.                 if (resolvedEndpoint) {
  7816.                   this.__showCachedContextMenu__(resolvedEndpoint);
  7817.                   a && a.stopPropagation()
  7818.                   return;
  7819.                 }
  7820.               }
  7821.             }
  7822.             return this.showContextMenu37(a);
  7823.           },
  7824.  
  7825.           showContextMenuForCacheReopen_: function (a) {
  7826.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  7827.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  7828.               if (endpoint) {
  7829.                 const f = this.__cacheResolvedEndpointData__;
  7830.                 if (typeof f === 'function') f(endpoint, a, true);
  7831.               }
  7832.             }
  7833.             return this.showContextMenu37_(a);
  7834.           },
  7835.  
  7836.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  7837.  
  7838.           showContextMenuWithDisableScroll: function (a) {
  7839.  
  7840.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  7841.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  7842.  
  7843.               const parentComponent = this.parentComponent;
  7844.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  7845.                 parentComponent.contextMenuOpen = true; // computeAllowScroll_(contextMenuOpen, moderationModeEnabled): allowScroll = !(contextMenuOpen || moderationModeEnabled)
  7846.               }
  7847.             }
  7848.  
  7849.             return this.showContextMenu48.apply(this, arguments);
  7850.  
  7851.           },
  7852.  
  7853.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  7854.  
  7855.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  7856.             return __showContextMenu_mutex_unlock__ === null;
  7857.           },
  7858.  
  7859.           __showContextMenu_assign_lock__: function (p) {
  7860.  
  7861.             const mutex = __showContextMenu_mutex__;
  7862.  
  7863.             mutex.lockWith(unlock => {
  7864.               p.then(unlock);
  7865.             });
  7866.  
  7867.           },
  7868.  
  7869.           showContextMenuWithMutex: function (a) {
  7870.             lastShowMenuTarget = this;
  7871.  
  7872.             if (this.__showContextMenu_sync_mode_request__) {
  7873.  
  7874.               return this.showContextMenu47(a);
  7875.             } else {
  7876.  
  7877.               const mutex = __showContextMenu_mutex__;
  7878.  
  7879.               mutex.lockWith(unlock => {
  7880.                 if (lastShowMenuTarget !== this) {
  7881.                   unlock();
  7882.                   return;
  7883.                 }
  7884.  
  7885.                 setTimeout(unlock, 800); // in case network failure
  7886.                 __showContextMenu_mutex_unlock__ = unlock;
  7887.                 try {
  7888.                   this.showContextMenu47(a);
  7889.                 } catch (e) {
  7890.                   console.warn(e);
  7891.                   unlock(); // in case function script error
  7892.                 }
  7893.  
  7894.               });
  7895.  
  7896.             }
  7897.  
  7898.  
  7899.           },
  7900.  
  7901.           showContextMenuWithMutex_: function (a) {
  7902.  
  7903.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  7904.               __showContextMenu_mutex_unlock__();
  7905.               __showContextMenu_mutex_unlock__ = null;
  7906.             }
  7907.             return this.showContextMenu47_(a);
  7908.  
  7909.           }
  7910.  
  7911.         }
  7912.  
  7913.         for (const tag of sTags) { // ##tag##
  7914.  
  7915.           (() => {
  7916.  
  7917.             const dummy = document.createElement(tag);
  7918.  
  7919.             const cProto = getProto(dummy);
  7920.             if (!cProto || !cProto.attached) {
  7921.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7922.               return;
  7923.             }
  7924.  
  7925.             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) {
  7926.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  7927.               cProto.showContextMenu37 = cProto.showContextMenu;
  7928.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  7929.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  7930.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  7931.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  7932.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  7933.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  7934.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  7935.             } else {
  7936.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  7937.             }
  7938.  
  7939.             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) {
  7940.               cProto.showContextMenu48 = cProto.showContextMenu;
  7941.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  7942.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7943.             } else {
  7944.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7945.             }
  7946.  
  7947.             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) {
  7948.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  7949.               cProto.showContextMenu47 = cProto.showContextMenu;
  7950.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  7951.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  7952.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  7953.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  7954.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7955.             } else {
  7956.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7957.             }
  7958.  
  7959.           })();
  7960.  
  7961.         }
  7962.  
  7963.         console.log("[End]");
  7964.  
  7965.         console.groupEnd();
  7966.  
  7967.       }).catch(console.warn);
  7968.  
  7969.  
  7970.  
  7971.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  7972.  
  7973.         mightFirstCheckOnYtInit();
  7974.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  7975.         console.log("[Begin]");
  7976.         (() => {
  7977.  
  7978.           const tag = "tp-yt-iron-dropdown";
  7979.           const dummy = document.createElement(tag);
  7980.  
  7981.           const cProto = getProto(dummy);
  7982.           if (!cProto || !cProto.attached) {
  7983.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7984.             return;
  7985.           }
  7986.  
  7987.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  7988.             cProto.__deraf_hn__ = function (sId, fn) {
  7989.               const rhKey = `_rafHandler_${sId}`;
  7990.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  7991.               if (m.has(fn)) return m.get(fn);
  7992.               const resFn = () => {
  7993.                 this.__rafs[sId] = null;
  7994.                 fn.call(this)
  7995.               };
  7996.               m.set(fn, resFn);
  7997.               m.set(resFn, resFn);
  7998.               return resFn;
  7999.             };
  8000.             cProto.__deraf34 = cProto.__deraf;
  8001.             cProto.__deraf = function (a, b) { // sId, fn
  8002.               let c = this.__rafs;
  8003.               null !== c[a] && cancelAnimationFrame(c[a]);
  8004.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  8005.             };
  8006.             console.log("USE_VANILLA_DEREF - OK");
  8007.           } else {
  8008.             console.log("USE_VANILLA_DEREF - NG");
  8009.           }
  8010.  
  8011.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  8012.             cProto.__deraf66 = cProto.__deraf;
  8013.             cProto.__deraf = function (sId, fn) {
  8014.               if (this.__byPassRAF__) {
  8015.                 Promise.resolve().then(() => {
  8016.                   fn.call(this);
  8017.                 });
  8018.               }
  8019.               let r = this.__deraf66.apply(this, arguments);
  8020.               return r;
  8021.             }
  8022.             console.log("FIX_DROPDOWN_DERAF - OK");
  8023.           } else {
  8024.             console.log("FIX_DROPDOWN_DERAF - NG");
  8025.           }
  8026.  
  8027.  
  8028.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  8029.  
  8030.             let lastClose = null;
  8031.             let lastOpen = null;
  8032.             let cid = 0;
  8033.  
  8034.             cProto.__mtChanged__ = function (b) {
  8035.  
  8036.               Promise.resolve().then(() => {
  8037.                 this._applyFocus();
  8038.               }).then(() => {
  8039.                 b ? this._renderOpened() : this._renderClosed();
  8040.               }).catch(console.warn);
  8041.  
  8042.             };
  8043.  
  8044.             const __moChanged__ = () => {
  8045.               if (!cid) return;
  8046.               // console.log(553, !!lastOpen, !!lastClose);
  8047.               cid = 0;
  8048.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  8049.                 lastOpen.__mtChanged__(1)
  8050.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  8051.                 lastClose.__mtChanged__(0);
  8052.               }
  8053.               lastOpen = null;
  8054.               lastClose = null;
  8055.             };
  8056.  
  8057.  
  8058.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  8059.               cProto._openedChanged66 = cProto._openedChanged;
  8060.               cProto._openedChanged = function () {
  8061.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  8062.                 this.__byPassRAF__ = true;
  8063.                 let r = this._openedChanged66.apply(this, arguments);
  8064.                 this.__byPassRAF__ = false;
  8065.                 return r;
  8066.               }
  8067.             }
  8068.  
  8069.             const pSetGet = (key, pdThis, pdBase) => {
  8070.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  8071.               return {
  8072.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  8073.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  8074.               };
  8075.             };
  8076.  
  8077.             cProto.__modifiedMenuPropsFn__ = function () {
  8078.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  8079.               const pdBase = Object.getOwnPropertyDescriptors(this)
  8080.  
  8081.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  8082.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  8083.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  8084.  
  8085.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  8086.                 console.warn('there is setter/getter for autoFitOnAttach');
  8087.                 return;
  8088.               }
  8089.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  8090.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  8091.                 return;
  8092.               }
  8093.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  8094.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  8095.                 return;
  8096.               }
  8097.  
  8098.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  8099.  
  8100.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  8101.  
  8102.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  8103.  
  8104.               Object.defineProperties(this, {
  8105.                 autoFitOnAttach: {
  8106.                   get() {
  8107.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  8108.                     return autoFitOnAttach;
  8109.                   },
  8110.                   set(nv) {
  8111.                     autoFitOnAttach = nv;
  8112.                     return true;
  8113.                   },
  8114.                   enumerable: true,
  8115.                   configurable: true
  8116.                 }, expandSizingTargetForScrollbars: {
  8117.                   get() {
  8118.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  8119.                     return expandSizingTargetForScrollbars;
  8120.                   },
  8121.                   set(nv) {
  8122.                     expandSizingTargetForScrollbars = nv;
  8123.                     return true;
  8124.                   },
  8125.                   enumerable: true,
  8126.                   configurable: true
  8127.                 }, allowOutsideScroll: {
  8128.                   get() {
  8129.                     if (this._modifiedMenuPropOn062__) return true;
  8130.                     return allowOutsideScroll;
  8131.                   },
  8132.                   set(nv) {
  8133.                     allowOutsideScroll = nv;
  8134.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  8135.                     return true;
  8136.                   },
  8137.                   enumerable: true,
  8138.                   configurable: true
  8139.                 }
  8140.               })
  8141.             };
  8142.  
  8143.             /*
  8144.                // ***** position() to be changed. *****
  8145.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  8146.  
  8147.                   overflow: visible !important;
  8148.                   min-width: max-content !important;
  8149.                   max-width: max-content !important;
  8150.                   max-height: max-content !important;
  8151.                   min-height: max-content !important;
  8152.                   white-space: nowrap;
  8153.               }
  8154.  
  8155.             */
  8156.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  8157.  
  8158.               let m34 = 0;
  8159.               cProto.__refitByPosition__ = function () {
  8160.                 m34++;
  8161.                 if (m34 <= 0) m34 = 0;
  8162.                 if (m34 !== 1) return;
  8163.                 const hostElement = this.hostElement || this;
  8164.                 if (document.visibilityState === 'visible') {
  8165.                   const sizingTarget = this.sizingTarget;
  8166.                   if (!sizingTarget) {
  8167.                     m34 = 0;
  8168.                     return;
  8169.                   }
  8170.                   hostElement.setAttribute('rNgzQ', '');
  8171.                   sizingTarget.setAttribute('rNgzQ', '');
  8172.  
  8173.                   const gn = () => {
  8174.                     hostElement.removeAttribute('rNgzQ');
  8175.                     sizingTarget.removeAttribute('rNgzQ');
  8176.                   }
  8177.  
  8178.                   const an = async () => {
  8179.                     while (m34 >= 1) {
  8180.                       await renderReadyPn(sizingTarget);
  8181.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  8182.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  8183.                       }
  8184.                       m34--;
  8185.                     }
  8186.                     m34 = 0;
  8187.                     Promise.resolve().then(gn);
  8188.                   }
  8189.                   setTimeout(an, 4); // wait those resizing function calls
  8190.  
  8191.  
  8192.                 } else {
  8193.                   m34 = 0;
  8194.                 }
  8195.               }
  8196.               cProto.position34 = cProto.position
  8197.               cProto.position = function () {
  8198.                 if (this._positionInitialize_) {
  8199.                   this._positionInitialize_ = 0;
  8200.                   this.__refitByPosition__();
  8201.                 }
  8202.                 let r = cProto.position34.apply(this, arguments);
  8203.                 return r;
  8204.               }
  8205.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  8206.  
  8207.             } else {
  8208.  
  8209.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  8210.  
  8211.             }
  8212.  
  8213.  
  8214.  
  8215.             cProto.__openedChanged = function () {
  8216.               this._positionInitialize_ = 1;
  8217.               // this.removeAttribute('horizontal-align')
  8218.               // this.removeAttribute('vertical-align')
  8219.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  8220.                 this.__menuTypeCheck__ = true;
  8221.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  8222.                   this._modifiedMenuPropOn062__ = false;
  8223.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  8224.                   // this.autoFitOnAttach = true;
  8225.                   // this.expandSizingTargetForScrollbars = true;
  8226.                   // this.allowOutsideScroll = true;
  8227.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  8228.                   this.__modifiedMenuPropsFn__();
  8229.                   // this.constrain= function(){}
  8230.                   // this.position= function(){}
  8231.  
  8232.                   // this.autoFitOnAttach = true;
  8233.                   // this.expandSizingTargetForScrollbars = true;
  8234.                   // this.allowOutsideScroll = true;
  8235.                 }
  8236.               }
  8237.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  8238.                 let newValue = null;
  8239.                 const positionTarget = this.positionTarget;
  8240.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  8241.                   if (this._modifiedMenuPropOn062__ === false) {
  8242.                     newValue = true;
  8243.                   }
  8244.                 } else if (this._modifiedMenuPropOn062__ === true) {
  8245.                   newValue = false;
  8246.                 }
  8247.                 if (newValue !== null) {
  8248.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  8249.                   this._modifiedMenuPropOn062__ = newValue;
  8250.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  8251.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  8252.                 }
  8253.               }
  8254.  
  8255.               if (this.opened) {
  8256.  
  8257.                 Promise.resolve().then(() => {
  8258.  
  8259.                   this._prepareRenderOpened();
  8260.                 }).then(() => {
  8261.                   this._manager.addOverlay(this);
  8262.                   if (this._manager._overlays.length === 1) {
  8263.                     lastOpen = this;
  8264.                     lastClose = null;
  8265.                   } else {
  8266.                     return 1;
  8267.                   }
  8268.                   // if (cid) {
  8269.                   //   clearTimeout(cid);
  8270.                   //   cid = -1;
  8271.                   //   this.__moChanged__();
  8272.                   //   cid = 0;
  8273.                   // } else {
  8274.                   //   cid = -1;
  8275.                   //   this.__moChanged__();
  8276.                   //   cid = 0;
  8277.                   // }
  8278.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  8279.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  8280.                   // cid = cid || setTimeout(__moChanged__, delay1);
  8281.                   cid = cid || requestAnimationFrame(__moChanged__);
  8282.                 }).then((r) => {
  8283.  
  8284.                   if (r) this.__mtChanged__(1);
  8285.                 }).catch(console.warn);
  8286.  
  8287.               } else {
  8288.                 Promise.resolve().then(() => {
  8289.                   this._manager.removeOverlay(this);
  8290.                   if (this._manager._overlays.length === 0) {
  8291.                     lastClose = this;
  8292.                     lastOpen = null;
  8293.                   } else {
  8294.                     return 1;
  8295.                   }
  8296.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  8297.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  8298.                   // cid = cid || setTimeout(__moChanged__, delay1);
  8299.                   cid = cid || requestAnimationFrame(__moChanged__);
  8300.                 }).then((r) => {
  8301.                   if (r) this.__mtChanged__(0);
  8302.                 }).catch(console.warn);
  8303.  
  8304.               }
  8305.  
  8306.             }
  8307.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  8308.  
  8309.           } else {
  8310.  
  8311.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  8312.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  8313.  
  8314.           }
  8315.  
  8316.  
  8317.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  8318.  
  8319.             cProto.__openedChanged82 = cProto.__openedChanged;
  8320.  
  8321.  
  8322.             cProto.__openedChanged = function () {
  8323.               const positionTarget = this.positionTarget;
  8324.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  8325.               return this.__openedChanged82.apply(this, arguments);
  8326.             }
  8327.           }
  8328.  
  8329.  
  8330.         })();
  8331.  
  8332.         console.log("[End]");
  8333.  
  8334.         console.groupEnd();
  8335.  
  8336.       }).catch(console.warn);
  8337.  
  8338.  
  8339.  
  8340.       FIX_ToggleRenderPolymerControllerExtractionBug && customElements.whenDefined('yt-live-chat-toggle-renderer').then(() => {
  8341.  
  8342.         mightFirstCheckOnYtInit();
  8343.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-toggle-renderer hacks");
  8344.         console.log("[Begin]");
  8345.         (() => {
  8346.  
  8347.           const tag = "yt-live-chat-toggle-renderer";
  8348.           const dummy = document.createElement(tag);
  8349.  
  8350.           const cProto = getProto(dummy);
  8351.           if (!cProto || !cProto.attached) {
  8352.             console.warn(`proto.attached for ${tag} is unavailable.`);
  8353.             return;
  8354.           }
  8355.  
  8356.         })();
  8357.  
  8358.         console.log("[End]");
  8359.         console.groupEnd();
  8360.  
  8361.       });
  8362.  
  8363.  
  8364.  
  8365.  
  8366.       /*
  8367.  
  8368.  
  8369.  
  8370.  
  8371.  
  8372.           var FU = function() {
  8373.               var a = this;
  8374.               this.nextHandle_ = 1;
  8375.               this.clients_ = {};
  8376.               this.JSC$10323_callbacks_ = {};
  8377.               this.unsubscribeAsyncHandles_ = {};
  8378.               this.subscribe = vl(function(b, c, d) {
  8379.                   var e = Geb(b);
  8380.                   if (e in a.clients_)
  8381.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  8382.                   else {
  8383.                       a: {
  8384.                           var h = Geb(b), l;
  8385.                           for (l in a.unsubscribeAsyncHandles_) {
  8386.                               var m = a.clients_[l];
  8387.                               if (m instanceof KO) {
  8388.                                   delete a.clients_[l];
  8389.                                   delete a.JSC$10323_callbacks_[l];
  8390.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  8391.                                   delete a.unsubscribeAsyncHandles_[l];
  8392.                                   i6a(m);
  8393.                                   m.objectId_ = new FQa(h);
  8394.                                   m.register();
  8395.                                   d = m;
  8396.                                   break a
  8397.                               }
  8398.                           }
  8399.                           d.objectSource = b.invalidationId.objectSource;
  8400.                           d.objectId = h;
  8401.                           if (b = b.webAuthConfigurationData)
  8402.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  8403.                               b.pageId && (d.pageId = b.pageId);
  8404.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  8405.                           d.register()
  8406.                       }
  8407.                       a.clients_[e] = d;
  8408.                       a.JSC$10323_callbacks_[e] = {}
  8409.                   }
  8410.                   d = a.nextHandle_++;
  8411.                   a.JSC$10323_callbacks_[e][d] = c;
  8412.                   return d
  8413.               })
  8414.           };
  8415.           FU.prototype.unsubscribe = function(a, b) {
  8416.               var c = Geb(a);
  8417.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  8418.               !this.JSC$10323_callbacks_[c].length)) {
  8419.                   var d = this.clients_[c];
  8420.                   b = Jq.run(function() {
  8421.                       ei(d);
  8422.                       delete this.clients_[c];
  8423.                       delete this.unsubscribeAsyncHandles_[c]
  8424.                   }
  8425.                   .bind(this));
  8426.                   this.unsubscribeAsyncHandles_[c] = b
  8427.               }
  8428.           }
  8429.           ;
  8430.  
  8431.  
  8432.       */
  8433.  
  8434.  
  8435.       const onManagerFound = (dummyManager) => {
  8436.         if (!dummyManager || typeof dummyManager !== 'object') return;
  8437.  
  8438.         const mgrProto = dummyManager.constructor.prototype;
  8439.  
  8440.         let keyCallbackStore = '';
  8441.         for (const [key, v] of Object.entries(dummyManager)) {
  8442.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  8443.         }
  8444.  
  8445.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  8446.  
  8447.         if (mgrProto.unsubscribe16) return;
  8448.  
  8449.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  8450.  
  8451.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  8452.         console.log("[Begin]");
  8453.  
  8454.         const isEmptyObject = ((obj) => (firstKey(obj) === null));
  8455.  
  8456.         const idMapper = new Map();
  8457.  
  8458.         const convertId = function (objectId) {
  8459.           if (!objectId || typeof objectId !== 'string') return null;
  8460.  
  8461.           let result = idMapper.get(objectId)
  8462.           if (result) return result;
  8463.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  8464.           idMapper.set(objectId, result)
  8465.           return result;
  8466.         }
  8467.  
  8468.  
  8469.         const rafHandleHolder = [];
  8470.  
  8471.         let pzw = 0;
  8472.         let lza = 0;
  8473.         const rafHandlerFn = () => {
  8474.           pzw = 0;
  8475.           if (rafHandleHolder.length === 1) {
  8476.             const f = rafHandleHolder[0];
  8477.             rafHandleHolder.length = 0;
  8478.             f();
  8479.           } else if (rafHandleHolder.length > 1) {
  8480.             const arr = rafHandleHolder.slice(0);
  8481.             rafHandleHolder.length = 0;
  8482.             for (const fn of arr) fn();
  8483.           }
  8484.         };
  8485.  
  8486.  
  8487.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  8488.  
  8489.           const checkIntegrityForSubscribe = (mgr) => {
  8490.             if (mgr
  8491.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  8492.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  8493.  
  8494.               const ns = new Set(Object.keys(mgr));
  8495.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  8496.  
  8497.               if (ns.size >= 6 && ms.size >= 4) {
  8498.                 // including 'subscribe18'
  8499.                 // 'unsubscribe16', 'subscribe19'
  8500.  
  8501.                 let r = 0;
  8502.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  8503.                   r += ns.has(k) ? 1 : 0;
  8504.                 }
  8505.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  8506.                   r += ms.has(k) ? 1 : 0;
  8507.                 }
  8508.                 if (r === 10) {
  8509.                   const isObject = (c) => (c || 0).constructor === Object;
  8510.  
  8511.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  8512.  
  8513.                     return true;
  8514.                   }
  8515.  
  8516.  
  8517.                 }
  8518.  
  8519.               }
  8520.  
  8521.  
  8522.             }
  8523.             return false;
  8524.           }
  8525.  
  8526.           mgrProto.subscribe19 = function (o, f, opts) {
  8527.  
  8528.             const ct_clients_ = this.clients_ || 0;
  8529.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  8530.  
  8531.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  8532.  
  8533.             let objectId = ((o || 0).invalidationId || 0).objectId;
  8534.             if (!objectId) return this.subscribe18.apply(this, arguments);
  8535.             objectId = convertId(objectId);
  8536.  
  8537.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  8538.  
  8539.             if (ct_clients_[objectId]) {
  8540.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  8541.             }
  8542.  
  8543.             return this.subscribe18.apply(this, arguments);
  8544.           }
  8545.  
  8546.           mgrProto.unsubscribe = function (o, d) {
  8547.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  8548.               this.subscribe18 = this.subscribe;
  8549.               this.subscribe = this.subscribe19;
  8550.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  8551.             }
  8552.             const ct_clients_ = this.clients_;
  8553.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  8554.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  8555.  
  8556.             let objectId = ((o || 0).invalidationId || 0).objectId;
  8557.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  8558.  
  8559.             objectId = convertId(objectId);
  8560.  
  8561.  
  8562.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  8563.  
  8564.             const callbacks = this[keyCallbackStore] || 0;
  8565.             const callbackObj = callbacks[objectId] || 0;
  8566.  
  8567.  
  8568.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  8569.               const w = ct_clients_[objectId];
  8570.               --lza;
  8571.               if (lza < -1e9) lza = -1;
  8572.               const qta = lza;
  8573.               rafHandleHolder.push(() => {
  8574.                 if (qta === ct_handles_[objectId]) {
  8575.                   const o = {
  8576.                     callbacks, callbackObj,
  8577.                     client: ct_clients_[objectId],
  8578.                     handle: ct_handles_[objectId]
  8579.                   };
  8580.                   let p = 0;
  8581.                   try {
  8582.                     if (ct_clients_[objectId] === w) {
  8583.                       w && "function" === typeof w.dispose && w.dispose();
  8584.                       delete ct_clients_[objectId];
  8585.                       delete ct_handles_[objectId];
  8586.                       p = 1;
  8587.                     } else {
  8588.                       // w && "function" === typeof w.dispose && w.dispose();
  8589.                       // delete ct_clients_[objectId];
  8590.                       // delete ct_handles_[objectId];
  8591.                       p = 2;
  8592.                     }
  8593.                   } catch (e) {
  8594.                     console.warn(e);
  8595.                   }
  8596.                   console.log(`unsubscribed: ${p}`, this, o);
  8597.                 }
  8598.               });
  8599.               ct_handles_[objectId] = qta;
  8600.               if (pzw === 0) {
  8601.                 pzw = requestAnimationFrame(rafHandlerFn);
  8602.               }
  8603.             }
  8604.           }
  8605.  
  8606.  
  8607.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  8608.  
  8609.         } else {
  8610.  
  8611.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  8612.         }
  8613.  
  8614.         console.log("[End]");
  8615.  
  8616.         console.groupEnd();
  8617.  
  8618.       }
  8619.  
  8620.  
  8621.  
  8622.       /*
  8623.  
  8624.  
  8625.               a.prototype.async = function(e, h) {
  8626.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  8627.               }
  8628.               ;
  8629.               a.prototype.cancelAsync = function(e) {
  8630.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  8631.               }
  8632.  
  8633.       */
  8634.  
  8635.  
  8636.       (FASTER_ICON_RENDERING && Promise.all(
  8637.         [
  8638.           customElements.whenDefined("yt-icon-shape"),
  8639.           customElements.whenDefined("yt-icon")
  8640.           //  document.createElement('icon-shape'),
  8641.         ]
  8642.       )).then(() => {
  8643.         let cq = 0;
  8644.         let dummys = [document.createElement('yt-icon-shape'), document.createElement('yt-icon')]
  8645.         for (const dummy of dummys) {
  8646.           let cProto = getProto(dummy);
  8647.           if (cProto && typeof cProto.shouldRenderIconShape === 'function' && !cProto.shouldRenderIconShape571 && cProto.shouldRenderIconShape.length === 1) {
  8648.             assertor(() => fnIntegrity(cProto.shouldRenderIconShape, '1.70.38'));
  8649.             cq++;
  8650.             cProto.shouldRenderIconShape571 = cProto.shouldRenderIconShape;
  8651.             cProto.shouldRenderIconShape = function (a) {
  8652.               if (this.isAnimatedIcon) return this.shouldRenderIconShape571(a);
  8653.               if (!this.iconType || !this.iconShapeData) return this.shouldRenderIconShape571(a);
  8654.               if (!this.iconName) return this.shouldRenderIconShape571(a);
  8655.               return false;
  8656.               // console.log(1051, this.iconType)
  8657.               // console.log(1052, this.iconShapeData)
  8658.               // console.log(1053, this.isAnimatedIcon)
  8659.             }
  8660.           }
  8661.           // if(cProto && cProto.switchTemplateAtRegistration){
  8662.           //   cProto.switchTemplateAtRegistration = false;
  8663.           // }
  8664.         }
  8665.         if (cq === 1) {
  8666.           console.log("modified shouldRenderIconShape - Y")
  8667.         } else {
  8668.           console.log("modified shouldRenderIconShape - N", cq)
  8669.         }
  8670.       });
  8671.  
  8672.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  8673.  
  8674.         let __dummyManager__ = null;
  8675.  
  8676.         mightFirstCheckOnYtInit();
  8677.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  8678.         console.log("[Begin]");
  8679.         (() => {
  8680.  
  8681.           const tag = "yt-invalidation-continuation"
  8682.           const dummy = document.createElement(tag);
  8683.  
  8684.           const cProto = getProto(dummy);
  8685.           if (!cProto || !cProto.attached) {
  8686.             console.warn(`proto.attached for ${tag} is unavailable.`);
  8687.             return;
  8688.           }
  8689.  
  8690.           const dummyManager = insp(dummy).manager_ || 0;
  8691.           __dummyManager__ = dummyManager;
  8692.  
  8693.           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) {
  8694.  
  8695.  
  8696.             const rafHub = new RAFHub();
  8697.  
  8698.             rafHub.keepRAF = true;
  8699.             cProto.async71 = cProto.async;
  8700.             cProto.cancelAsync71 = cProto.cancelAsync;
  8701.  
  8702.             // mostly for subscription timeoutMs 10000ms
  8703.             let mcw = 1; // 1, 3, 5, ...
  8704.             let arr = new Map();
  8705.  
  8706.             let __asyncInited__ = 0;
  8707.             let __timeoutStartId__ = null;
  8708.             const __asyncInit__ = () => {
  8709.  
  8710.               if (__asyncInited__) return;
  8711.               __asyncInited__ = 1;
  8712.  
  8713.               __timeoutStartId__ = setTimeout(() => { });
  8714.               mcw = __timeoutStartId__ * 2 + 1;
  8715.  
  8716.               setInterval(() => {
  8717.  
  8718.                 if (!arr.length) return;
  8719.  
  8720.                 const p = Date.now();
  8721.                 let deleteKeys = [];
  8722.                 arr.forEach((entry, key) => {
  8723.  
  8724.  
  8725.                   if (entry.cid === -1) {
  8726.                     entry.cid = -2;
  8727.                   } else if (entry.cid === -2) {
  8728.  
  8729.                     let offset = p - entry.add
  8730.                     if (offset < 0) offset = 0;
  8731.                     let delay2 = entry.delay - offset;
  8732.                     if (delay2 < 0) delay2 = 0;
  8733.                     entry.cid = setTimeout(entry.q(), delay2);
  8734.                     entry.q = null;
  8735.  
  8736.                   } else if (entry.add + entry.delay < p) {
  8737.                     deleteKeys.push(key);
  8738.  
  8739.                   }
  8740.  
  8741.                 })
  8742.  
  8743.                 for (const key of deleteKeys) arr.delete(key);
  8744.  
  8745.               }, 2000)
  8746.  
  8747.             }
  8748.  
  8749.  
  8750.             cProto.async = function (e, h) {
  8751.  
  8752.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  8753.  
  8754.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  8755.  
  8756.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  8757.  
  8758.  
  8759.               if (!this.__asyncInited__) {
  8760.                 this.__asyncInited__ = 1;
  8761.                 __asyncInit__();
  8762.               }
  8763.               mcw += 2; // 2K+3, 2K+4, ...
  8764.               if (mcw > 1e9) mcw = mcw % 1e4;
  8765.               const cid = mcw;
  8766.               const q = () => {
  8767.                 return () => {
  8768.                   console.log('async h > 8000');
  8769.                   e.call(this);
  8770.                 }
  8771.               }
  8772.               // setTimeout(q, delay)
  8773.               arr.set(cid, {
  8774.                 cid: -1, // -1 -> -2 -> cid
  8775.                 add: Date.now(),
  8776.                 q,
  8777.                 delay: h
  8778.               });
  8779.               // console.log('cid-async', cid)
  8780.               return cid;
  8781.  
  8782.             }
  8783.  
  8784.  
  8785.             cProto.cancelAsync = function (e) {
  8786.  
  8787.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  8788.  
  8789.               // console.log('cid-unasync', e)
  8790.  
  8791.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  8792.  
  8793.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  8794.  
  8795.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  8796.  
  8797.                 if (!arr.has(e)) return; // duplciated cancel
  8798.  
  8799.                 const entry = arr.get(e);
  8800.                 if (entry.cid < 0) {
  8801.                   entry.cid = 0;
  8802.                   arr.delete(e);
  8803.                 } else {
  8804.                   clearTimeout(entry.cid); // cid >= 1
  8805.                   entry.cid = 0;
  8806.                   arr.delete(e);
  8807.                 }
  8808.  
  8809.               } else {
  8810.  
  8811.                 return this.cancelAsync71(e);
  8812.  
  8813.               }
  8814.  
  8815.             }
  8816.  
  8817.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  8818.  
  8819.           } else {
  8820.             console.log("CHANGE_DATA_FLUSH_ASYNC - NOT REQUIRED");
  8821.  
  8822.           }
  8823.  
  8824.         })();
  8825.  
  8826.         console.log("[End]");
  8827.  
  8828.         console.groupEnd();
  8829.  
  8830.  
  8831.  
  8832.         onManagerFound(__dummyManager__);
  8833.  
  8834.       }).catch(console.warn);
  8835.  
  8836.  
  8837.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  8838.  
  8839.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  8840.  
  8841.           mightFirstCheckOnYtInit();
  8842.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  8843.           console.log("[Begin]");
  8844.           (() => {
  8845.  
  8846.             const tag = "yt-live-interactivity-component-background"
  8847.             const dummy = document.createElement(tag);
  8848.  
  8849.             const cProto = getProto(dummy);
  8850.             if (!cProto || !cProto.attached) {
  8851.               console.warn(`proto.attached for ${tag} is unavailable.`);
  8852.               return;
  8853.             }
  8854.  
  8855.             cProto.__toStopAfterRun__ = function (hostElement) {
  8856.               let mo = new MutationObserver(() => {
  8857.                 mo.disconnect();
  8858.                 mo.takeRecords();
  8859.                 mo = null;
  8860.                 this.lottieAnimation && this.lottieAnimation.stop(); // primary
  8861.                 foregroundPromiseFn().then(() => { // if the lottieAnimation is started with rAf triggering
  8862.                   this.lottieAnimation && this.lottieAnimation.stop(); // fallback
  8863.                 });
  8864.               });
  8865.               mo.observe(hostElement, { subtree: true, childList: true });
  8866.             }
  8867.  
  8868.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  8869.  
  8870.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  8871.               cProto.maybeLoadAnimationBackground = function () {
  8872.                 let toRun = true;
  8873.                 let stopAfterRun = false;
  8874.                 if (!this.__bypassDisableAnimationBackground__) {
  8875.                   let doFix = false;
  8876.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  8877.                     if (!this.lottieAnimation) {
  8878.                       doFix = true;
  8879.                     }
  8880.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  8881.                     doFix = true;
  8882.                   }
  8883.                   if (doFix) {
  8884.                     if (this.useAnimationBackground === true) {
  8885.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  8886.                     }
  8887.                     toRun = true;
  8888.                     stopAfterRun = true;
  8889.                   }
  8890.                 }
  8891.                 if (toRun) {
  8892.                   if (stopAfterRun && (this.hostElement instanceof HTMLElement)) {
  8893.                     this.__toStopAfterRun__(this.hostElement); // primary
  8894.                   }
  8895.                   const r = this.maybeLoadAnimationBackground77.apply(this, arguments);
  8896.                   if (stopAfterRun && this.lottieAnimation) {
  8897.                     this.lottieAnimation.stop(); // fallback if no mutation
  8898.                   }
  8899.                   return r;
  8900.                 }
  8901.               }
  8902.  
  8903.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  8904.  
  8905.             } else {
  8906.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  8907.  
  8908.             }
  8909.  
  8910.           })();
  8911.  
  8912.           console.log("[End]");
  8913.  
  8914.           console.groupEnd();
  8915.  
  8916.  
  8917.         }).catch(console.warn);
  8918.  
  8919.       }
  8920.  
  8921.  
  8922.       if (DELAY_FOCUSEDCHANGED) {
  8923.  
  8924.         customElements.whenDefined("yt-live-chat-text-input-field-renderer").then(() => {
  8925.  
  8926.  
  8927.           mightFirstCheckOnYtInit();
  8928.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-text-input-field-renderer hacks");
  8929.           console.log("[Begin]");
  8930.           (() => {
  8931.  
  8932.             const tag = "yt-live-chat-text-input-field-renderer"
  8933.             const dummy = document.createElement(tag);
  8934.  
  8935.             const cProto = getProto(dummy);
  8936.             if (!cProto || !cProto.attached) {
  8937.               console.warn(`proto.attached for ${tag} is unavailable.`);
  8938.               return;
  8939.             }
  8940.  
  8941.             if (DELAY_FOCUSEDCHANGED && typeof cProto.focusedChanged === 'function' && cProto.focusedChanged.length === 0 && !cProto.focusedChanged372) {
  8942.               cProto.focusedChanged372 = cProto.focusedChanged;
  8943.               cProto.focusedChanged = function () {
  8944.                 Promise.resolve().then(() => {
  8945.                   if (this.isAttached === true) this.focusedChanged372();
  8946.                 });
  8947.               }
  8948.             }
  8949.  
  8950.           })();
  8951.  
  8952.           console.log("[End]");
  8953.  
  8954.           console.groupEnd();
  8955.  
  8956.         });
  8957.  
  8958.       }
  8959.  
  8960.  
  8961.     }
  8962.  
  8963.  
  8964.  
  8965.  
  8966.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  8967.  
  8968.     const fixJsonParse = () => {
  8969.  
  8970.       let p1 = window.onerror;
  8971.  
  8972.       try {
  8973.         JSON.parse("{}");
  8974.       } catch (e) {
  8975.         console.warn(e);
  8976.       }
  8977.  
  8978.       let p2 = window.onerror;
  8979.  
  8980.       if (p1 !== p2) {
  8981.  
  8982.  
  8983.         console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | JS Engine Issue Found"}`,
  8984.           "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  8985.           "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  8986.         );
  8987.  
  8988.         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");
  8989.  
  8990.         console.groupEnd();
  8991.  
  8992.       }
  8993.  
  8994.     }
  8995.  
  8996.     if (CHECK_JSONPRUNE) {
  8997.       promiseForCustomYtElementsReady.then(fixJsonParse);
  8998.     }
  8999.  
  9000.   });
  9001.  
  9002.  
  9003.  
  9004. })({ IntersectionObserver });