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YouTube 超快聊天

YouTube直播聊天的终极性能提升

当前为 2024-06-27 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.64.0
  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 FIX_MEMORY_LEAKAGE_TICKER_ACTIONMAP = true;       // To fix Memory Leakage in yt-live-chat-ticker-...-item-renderer
  44.  
  45.   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
  46.   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.
  47.   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
  48.  
  49.   const ENABLE_NO_SMOOTH_TRANSFORM = true;                // Depends on whether you want the animation effect for new chat messages
  50.   const USE_OPTIMIZED_ON_SCROLL_ITEMS = true;             // TRUE for the majority
  51.   const ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  52.  
  53.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  54.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  55.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  56.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  57.  
  58.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  59.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  60.  
  61.   // Replace requestAnimationFrame timers with custom implementation
  62.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  63.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  64.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  65.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  66.  
  67.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  68.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  69.  
  70.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  71.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  72.  
  73.   // Data Manipulation for Participants (Participant List)
  74.   // << if DO_PARTICIPANT_LIST_HACKS >>
  75.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  76.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  77.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  78.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  79.   // << end >>
  80.  
  81.   // show more button
  82.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  83.  
  84.   // faster stampDomArray_ for participants list creation
  85.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  86.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  87.  
  88.   // reuse yt components
  89.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  90.  
  91.   // ShadyDom Free is buggy
  92.   const DISABLE_FLAGS_SHADYDOM_FREE = true;
  93.  
  94.   // images <Group#I01>
  95.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  96.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  97.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  98.  
  99.   const DO_LINK_PREFETCH = true;                      // DO NOT CHANGE
  100.   // << if DO_LINK_PREFETCH >>
  101.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  102.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  103.   const SKIP_PRELOAD_EMOJI = true;
  104.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  105.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  106.   // << end >>
  107.  
  108.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  109.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  110.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  111.  
  112.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  113.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  114.  
  115.   const ATTEMPT_ANIMATED_TICKER_BACKGROUND = 'steps'   // false OR '' for disabled, 'linear', 'steps' for easing-function
  116.   // << if ATTEMPT_ANIMATED_TICKER_BACKGROUND >>
  117.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  118.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  119.   // [limiting 500 max steps] is recommended for "confortable visual change"
  120.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  121.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  122.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  123.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  124.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  125.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  126.   // << end >>
  127.  
  128.   const FIX_TOOLTIP_DISPLAY = true;                       // changed in 2024.05.02
  129.   const USE_VANILLA_DEREF = true;
  130.   const FIX_DROPDOWN_DERAF = true;                        // DONT CHANGE
  131.  
  132.  
  133.   const CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true;                // cache the menu data and used for the next reopen
  134.   const ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU = false;   // pause auto scroll faster when the context menu is about to show
  135.   const ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU = true;                // avoid multiple requests on the same time
  136.  
  137.   const BOOST_MENU_OPENCHANGED_RENDERING = true;
  138.   const FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK = true;  // click again = close
  139.   const NO_ITEM_TAP_FOR_NON_STATIONARY_TAP = true;                // dont open the menu (e.g. text message) if cursor is moved or long press
  140.   const TAP_ACTION_DURATION = 280;                                // exceeding 280ms would not consider as a tap action
  141.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true;             // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  142.   // const FIX_MENU_CAPTURE_SCROLL = true;
  143.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;                      // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  144.  
  145.   const RAF_FIX_keepScrollClamped = true;
  146.   const RAF_FIX_scrollIncrementally = 2;                          // 0: no action; 1: basic fix; 2: also fix scroll position
  147.  
  148.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  149.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  150.  
  151.   const CHECK_JSONPRUNE = true;                        // This is a bug in Brave
  152.   // << end >>
  153.  
  154.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  155.  
  156.   const CHANGE_DATA_FLUSH_ASYNC = false;
  157.   // CHANGE_DATA_FLUSH_ASYNC is disabled due to bug report: https://greasyfork.org/scripts/469878-youtube-super-fast-chat/discussions/199479
  158.   // to be further investigated
  159.  
  160.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  161.  
  162.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  163.   // 0 = default Yt animation background [= no fix];
  164.   // 1 = disable default animation background [= keep special animation];
  165.   // 2 = disable all animation backgrounds [= no animation backbround]
  166.  
  167.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  168.  
  169.   const MAX_TOOLTIP_NO_WRAP_WIDTH = '72vw'; // '' for disable; accept values like '60px', '25vw'
  170.  
  171.   const AMEND_TICKER_handleLiveChatAction = false; // to fix ticker duplication and unresponsively fast ticker generation
  172.   // AMEND_TICKER_handleLiveChatAction to be fixed (2024.05.21)
  173.  
  174.   const AMEND_TICKER_handleLiveChatAction_v3 = true; // responsiveness fix (Major Feature)
  175.  
  176.   const ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION = true;
  177.   const ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME = true;
  178.   const FIX_BATCH_TICKER_ORDER = true;
  179.  
  180.   const DISABLE_Translation_By_Google = true;
  181.  
  182.   const FASTER_ICON_RENDERING = true;
  183.  
  184.   const DELAY_FOCUSEDCHANGED = true;
  185.  
  186.   const skipErrorForhandleAddChatItemAction_ = true; // currently depends on ENABLE_NO_SMOOTH_TRANSFORM
  187.   const fixChildrenIssue801 = true; // if __children801__ is set [fix polymer controller method extration for `.set()`]
  188.  
  189.   const SUPPRESS_refreshOffsetContainerHeight_ = true; // added in FEB 2024; true for default layout options
  190.  
  191.   const NO_FILTER_DROPDOWN_BORDER = true; // added in 2024.03.02
  192.  
  193.   const FIX_ANIMATION_TICKER_TEXT_POSITION = true; // CSS fix; experimental; added in 2024.04.07
  194.   const FIX_AUTHOR_CHIP_BADGE_POSITION = true;
  195.  
  196.   const FIX_ToggleRenderPolymerControllerExtractionBug = false; // to be reviewed
  197.  
  198.   const REACTION_ANIMATION_PANEL_CSS_FIX = true;
  199.  
  200.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  201.   /*
  202.  
  203.     ### Time Approach
  204.  
  205.     // all below values can make the time interval > 250ms
  206.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  207.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  208.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  209.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  210.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  211.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  212.  
  213.     ### Pixel Check
  214.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  215.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  216.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  217.  
  218.     ### Example - totalDuration = 280000
  219.     totalDuration 280000
  220.     stepInterval 0.5
  221.     numOfSteps = Math.round(100 / stepInterval) = 200
  222.     time interval = 280000 / 200 = 1400ms <acceptable>
  223.  
  224.     ### Example - totalDuration = 18000
  225.     totalDuration 18000
  226.     stepInterval 5
  227.     numOfSteps = Math.round(100 / stepInterval) = 20
  228.     time interval = 18000 / 20 = 900ms <acceptable>
  229.  
  230.     ### Example - totalDuration = 5000
  231.     totalDuration 5000
  232.     stepInterval 5
  233.     numOfSteps = Math.round(100 / stepInterval) = 20
  234.     time interval = 5000 / 20 = 250ms <threshold value>
  235.  
  236.     ### Example - totalDuration = 3600
  237.     totalDuration 3600
  238.     stepInterval 5
  239.     numOfSteps = Math.round(100 / stepInterval) = 20
  240.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  241.  
  242.   */
  243.  
  244.   // =======================================================================================================
  245.  
  246.   // AUTOMAICALLY DETERMINED
  247.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  248.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  249.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  250.   let runTickerClassName = 'run-ticker';
  251.  
  252.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  253.   /*
  254.     WebP: data:image/webp;base64,UklGRjAB
  255.     PNG: data:image/png;base64,iVBORw0KGg==
  256.     JPEG: data:image/jpeg;base64,/9j/4AA=
  257.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  258.     BMP: data:image/bmp;base64,Qk1oAAAA
  259.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  260.  
  261.     WebP: data:image/webp;base64,AAAAAAA=
  262.     PNG:  data:image/png;base64,AAAAAAA=
  263.     JPEG: data:image/jpeg;base64,AAAAAAA=
  264.     GIF:  data:image/gif;base64,AAAAAAA=
  265.     BMP:  data:image/bmp;base64,AAAAAAA=
  266.  
  267.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  268.  
  269.  
  270.   */
  271.  
  272.   // image sizing code
  273.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  274.  
  275.  
  276.   //   function KC(a, b, c, d) {
  277.   //     d = void 0 === d ? "width" : d;
  278.   //     if (!a || !a.length)
  279.   //         return null;
  280.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  281.   //         var e = window.devicePixelRatio;
  282.   //         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"));
  283.   //         HC = e
  284.   //     } else
  285.   //         HC || (HC = window.devicePixelRatio);
  286.   //     e = HC;
  287.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  288.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  289.   //         return a[0].url || null;
  290.   //     e = a.length;
  291.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  292.   //         return a[e - 1].url || null;
  293.   //     if (c)
  294.   //         for (var h = 0; h < e; h++)
  295.   //             if (0 <= a[h].url.indexOf(c))
  296.   //                 return a[h].url || null;
  297.   //     for (c = 0; c < e; c++)
  298.   //         if (a[c][d] >= b)
  299.   //             return a[c].url || null;
  300.   //     for (b = e - 1; 0 < b; b--)
  301.   //         if (a[b][d])
  302.   //             return a[b].url || null;
  303.   //     return a[0].url || null
  304.   // }
  305.  
  306.   const { IntersectionObserver } = __CONTEXT__;
  307.   let _x69;
  308.   try {
  309.     _x69 = document.createAttributeNS("http://www.w3.org/2000/svg", "nil").addEventListener;
  310.   } catch (e) { }
  311.   const pureAddEventListener = _x69;
  312.   if (!pureAddEventListener) return console.warn("pureAddEventListener cannot be obtained.");
  313.  
  314.   /** @type {globalThis.PromiseConstructor} */
  315.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  316.  
  317.   // let jsonParseFix = null;
  318.  
  319.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  320.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  321.  
  322.   // necessity of cssText3_smooth_transform_position to be checked.
  323.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  324.  
  325.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  326.         position: static !important;
  327.     }
  328.  
  329.   `: '';
  330.  
  331.   // fallback if dummy style fn fails
  332.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  333.  
  334.     /* optional */
  335.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  336.         height: auto !important;
  337.         min-height: unset !important;
  338.     }
  339.  
  340.     #items.style-scope.yt-live-chat-item-list-renderer {
  341.         transform: translateY(0px) !important;
  342.     }
  343.  
  344.     /* optional */
  345.  
  346.   `: '';
  347.  
  348.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  349.  
  350.     /* ------------------------------------------------------------------------------------------------------------- */
  351.  
  352.     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 {
  353.         contain: layout style;
  354.     }
  355.  
  356.     #items.style-scope.yt-live-chat-item-list-renderer {
  357.         contain: layout paint style;
  358.     }
  359.  
  360.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  361.         contain: style;
  362.     }
  363.  
  364.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  365.         contain: size style;
  366.     }
  367.  
  368.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  369.         contain: size layout paint style;
  370.     }
  371.  
  372.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  373.         contain: layout paint style;
  374.     }
  375.  
  376.     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 {
  377.         contain: layout style;
  378.     }
  379.  
  380.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  381.         contain: layout paint style;
  382.     }
  383.  
  384.     /* ------------------------------------------------------------------------------------------------------------- */
  385.  
  386.   ` : '';
  387.  
  388.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  389.  
  390.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  391.         top: 4px;
  392.         transition-property: top;
  393.         bottom: unset;
  394.     }
  395.  
  396.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  397.         top: -42px;
  398.     }
  399.  
  400.   `: '';
  401.  
  402.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  403.  
  404.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  405.         contain: layout style;
  406.     }
  407.  
  408.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  409.         overflow: visible;
  410.     }
  411.  
  412.   `: '';
  413.  
  414.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  415.  
  416.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  417.         --yt-live-chat-action-panel-top-border: none;
  418.     }
  419.  
  420.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  421.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  422.     }
  423.  
  424.     html #panel-pages.yt-live-chat-renderer {
  425.         border-top: 0;
  426.         border-bottom: 0;
  427.     }
  428.  
  429.   `: '';
  430.  
  431.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  432.  
  433.     img,
  434.     yt-img-shadow[height][width],
  435.     yt-img-shadow {
  436.         content-visibility: visible !important;
  437.     }
  438.  
  439.   `  : '';
  440.  
  441.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  442.  
  443.     /* remove YouTube constant will-change */
  444.     /* constant value will slow down the performance; default auto */
  445.  
  446.     /* www-player.css */
  447.     html .ytp-contextmenu,
  448.     html .ytp-settings-menu {
  449.         will-change: unset;
  450.     }
  451.  
  452.     /* frequently matched elements */
  453.     html .fill.yt-interaction,
  454.     html .stroke.yt-interaction,
  455.     html .yt-spec-touch-feedback-shape__fill,
  456.     html .yt-spec-touch-feedback-shape__stroke {
  457.         will-change: unset;
  458.     }
  459.  
  460.     /* live_chat_polymer.js */
  461.     /*
  462.     html .toggle-button.tp-yt-paper-toggle-button,
  463.     html #primaryProgress.tp-yt-paper-progress,
  464.     html #secondaryProgress.tp-yt-paper-progress,
  465.     html #onRadio.tp-yt-paper-radio-button,
  466.     html .fill.yt-interaction,
  467.     html .stroke.yt-interaction,
  468.     html .yt-spec-touch-feedback-shape__fill,
  469.     html .yt-spec-touch-feedback-shape__stroke {
  470.         will-change: unset;
  471.     }
  472.     */
  473.  
  474.     /* desktop_polymer_enable_wil_icons.js */
  475.     /* html .fill.yt-interaction,
  476.     html .stroke.yt-interaction, */
  477.     html tp-yt-app-header::before,
  478.     html tp-yt-iron-list,
  479.     html #items.tp-yt-iron-list > *,
  480.     html #onRadio.tp-yt-paper-radio-button,
  481.     html .toggle-button.tp-yt-paper-toggle-button,
  482.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  483.     html #items.ytd-post-multi-image-renderer,
  484.     html #items.ytd-horizontal-card-list-renderer,
  485.     html #items.yt-horizontal-list-renderer,
  486.     html #left-arrow.yt-horizontal-list-renderer,
  487.     html #right-arrow.yt-horizontal-list-renderer,
  488.     html #items.ytd-video-description-infocards-section-renderer,
  489.     html #items.ytd-video-description-music-section-renderer,
  490.     html #chips.ytd-feed-filter-chip-bar-renderer,
  491.     html #chips.yt-chip-cloud-renderer,
  492.     html #items.ytd-merch-shelf-renderer,
  493.     html #items.ytd-product-details-image-carousel-renderer,
  494.     html ytd-video-preview,
  495.     html #player-container.ytd-video-preview,
  496.     html #primaryProgress.tp-yt-paper-progress,
  497.     html #secondaryProgress.tp-yt-paper-progress,
  498.     html ytd-miniplayer[enabled] /* ,
  499.     html .yt-spec-touch-feedback-shape__fill,
  500.     html .yt-spec-touch-feedback-shape__stroke */ {
  501.         will-change: unset;
  502.     }
  503.  
  504.     /* other */
  505.     .ytp-videowall-still-info-content[class],
  506.     .ytp-suggestion-image[class] {
  507.         will-change: unset !important;
  508.     }
  509.  
  510.   ` : '';
  511.  
  512.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  513.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  514.  
  515.     elzm-fonts {
  516.         visibility: collapse;
  517.         position: fixed;
  518.         top: -10px;
  519.         left: -10px;
  520.         font-size: 10pt;
  521.         line-height: 100%;
  522.         width: 100px;
  523.         height: 100px;
  524.         transform: scale(0.1);
  525.         transform: scale(0.01);
  526.         transform: scale(0.001);
  527.         transform-origin: 0 0;
  528.         contain: strict;
  529.         display: block;
  530.  
  531.         pointer-events: none !important;
  532.         user-select: none !important;
  533.     }
  534.  
  535.     elzm-fonts[id]#elzm-fonts-yk75g {
  536.         user-select: none !important;
  537.         pointer-events: none !important;
  538.     }
  539.  
  540.     elzm-font {
  541.         visibility: collapse;
  542.         position: absolute;
  543.         line-height: 100%;
  544.         width: 100px;
  545.         height: 100px;
  546.         contain: strict;
  547.         display: block;
  548.  
  549.         user-select: none !important;
  550.         pointer-events: none !important;
  551.     }
  552.  
  553.     elzm-font::before {
  554.         visibility: collapse;
  555.         position: absolute;
  556.         line-height: 100%;
  557.         width: 100px;
  558.         height: 100px;
  559.         contain: strict;
  560.         display: block;
  561.  
  562.         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';
  563.  
  564.         user-select: none !important;
  565.         pointer-events: none !important;
  566.     }
  567.  
  568.   `: '';
  569.  
  570.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  571.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  572.         -webkit-backdrop-filter: none;
  573.         backdrop-filter: none;
  574.     }
  575.   `: '';
  576.  
  577.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  578.  
  579.     @keyframes blinker-miuzp {
  580.         0%, 60%, 100% {
  581.             opacity: 1;
  582.         }
  583.         30% {
  584.             opacity: 0.6;
  585.         }
  586.     }
  587.  
  588.     yt-icon-button#show-more.has-new-messages-miuzp {
  589.         animation: blinker-miuzp 1.74s linear infinite;
  590.     }
  591.  
  592.   `: '';
  593.  
  594.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  595.  
  596.     yt-live-chat-paid-message-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-membership-item-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-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  605.       pointer-events: none !important;
  606.     }
  607.  
  608.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  609.       pointer-events: none !important; /* TO_BE_REVIEWED */
  610.     }
  611.  
  612.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  613.       pointer-events: none !important;
  614.     }
  615.  
  616.   `: '';
  617.  
  618.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  619.  
  620.  
  621.     tp-yt-paper-tooltip[role="tooltip"] {
  622.       box-sizing: content-box !important;
  623.       margin: 0px !important;
  624.       padding: 0px !important;
  625.       contain: none !important;
  626.     }
  627.  
  628.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  629.       box-sizing: content-box !important;
  630.       display: inline-block;
  631.       contain: none !important;
  632.     }
  633.  
  634.  
  635.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  636.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  637.       width: max-content;
  638.       text-overflow: ellipsis;
  639.       overflow: hidden;
  640.       white-space: nowrap;
  641.     }
  642.  
  643.  
  644.   `: '';
  645.  
  646.  
  647.   const cssText13_no_text_select_when_menu_visible = `
  648.     [menu-visible] {
  649.       --sfc47-text-select: none;
  650.     }
  651.     [menu-visible] #header[id][class],
  652.     [menu-visible] #content[id][class],
  653.     [menu-visible] #header[id][class] *,
  654.     [menu-visible] #content[id][class] * {
  655.       user-select: var(--sfc47-text-select) !important;
  656.     }
  657.     [menu-visible] #menu {
  658.       --sfc47-text-select: inherit;
  659.     }
  660.   `;
  661.  
  662.   const cssText14_NO_FILTER_DROPDOWN_BORDER = NO_FILTER_DROPDOWN_BORDER ? `
  663.   yt-live-chat-header-renderer.yt-live-chat-renderer #label.yt-dropdown-menu::before {
  664.     border:0;
  665.   }
  666.   ` : '';
  667.  
  668.   const cssText15_FIX_ANIMATION_TICKER_TEXT_POSITION = FIX_ANIMATION_TICKER_TEXT_POSITION ? `
  669.     .style-scope.yt-live-chat-ticker-renderer #animation-container[id][class] {
  670.       position: relative;
  671.       display: grid;
  672.       grid-auto-columns: 1fr;
  673.       grid-auto-rows: 1fr;
  674.       grid-template-columns: repeat(1, 1fr);
  675.       gap: 7px;
  676.       padding-bottom: 0;
  677.       margin-bottom: 0;
  678.       padding-top: 0;
  679.       align-self: flex-start;
  680.       flex-wrap: nowrap;
  681.       margin-top: 1px;
  682.   }
  683.  
  684.   .style-scope.yt-live-chat-ticker-renderer #animation-container > [id][class] {
  685.       margin-top: 0px;
  686.       margin-bottom: 0px;
  687.       flex-direction: row;
  688.       flex-wrap: nowrap;
  689.       align-items: center;
  690.       justify-content: flex-start;
  691.   }
  692.  
  693.   .style-scope.yt-live-chat-ticker-renderer #animation-container > [id][class]:first-child::after {
  694.       content: '補';
  695.       visibility: collapse;
  696.       display: inline-block;
  697.       position: relative;
  698.       width: 0;
  699.       line-height: 22px;
  700.   }
  701.  
  702.   ` : '';
  703.  
  704.   const cssText16_FIX_AUTHOR_CHIP_BADGE_POSITION = FIX_AUTHOR_CHIP_BADGE_POSITION ? `
  705.     #card  #author-name-chip > yt-live-chat-author-chip[single-line] {
  706.         flex-wrap: nowrap;
  707.         white-space: nowrap;
  708.         display: inline-flex;
  709.         flex-direction: row;
  710.         text-wrap: nowrap;
  711.         flex-shrink: 0;
  712.         align-items: center;
  713.     }
  714.  
  715.     #card  #author-name-chip {
  716.         display: inline-flex;
  717.         flex-direction: row;
  718.         align-items: flex-start;
  719.     }
  720.   `: '';
  721.  
  722.  
  723.   // Example: https://www.youtube.com/watch?v=Xfytz-igsuc
  724.   const cssText17_FIX_overwidth_banner_message = `
  725.     yt-live-chat-banner-manager#live-chat-banner.style-scope.yt-live-chat-item-list-renderer {
  726.       max-width: 100%;
  727.       box-sizing: border-box;
  728.     }
  729.   `;
  730.  
  731.  
  732.   const cssText18_REACTION_ANIMATION_PANEL_CSS_FIX = REACTION_ANIMATION_PANEL_CSS_FIX ? `
  733.     #reaction-control-panel-overlay[class] {
  734.       contain: strict;
  735.       margin: 0;
  736.       padding: 0;
  737.       border: 0;
  738.       box-sizing: border-box;
  739.       will-change: initial;
  740.     }
  741.     #reaction-control-panel-overlay[class] *[class] {
  742.       will-change: initial;
  743.     }
  744.   `: ''
  745.  
  746.   const addCss = () => `
  747.  
  748.     @property --ticker-rtime {
  749.       syntax: "<percentage>";
  750.       inherits: false;
  751.       initial-value: 0%;
  752.     }
  753.  
  754.     /*
  755.     .run-ticker {
  756.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  757.     }
  758.  
  759.     .run-ticker-test {
  760.       background: #00000001;
  761.     }
  762.  
  763.     .run-ticker-forced,
  764.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  765.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  766.     {
  767.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  768.     }
  769.     */
  770.  
  771.     .run-ticker {
  772.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  773.     }
  774.  
  775.     .run-ticker,
  776.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  777.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  778.     {
  779.       background: var(--ticker-bg) !important;
  780.     }
  781.  
  782.     yt-live-chat-ticker-dummy777-item-renderer {
  783.       background: #00000001;
  784.     }
  785.  
  786.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  787.       position: fixed !important;
  788.       top: -1000px !important;
  789.       left: -1000px !important;
  790.       font-size: 1px !important;
  791.       color: transparent !important;
  792.       pointer-events: none !important;
  793.       z-index: -1 !important;
  794.       contain: strict !important;
  795.       box-sizing: border-box !important;
  796.       pointer-events: none !important;
  797.       user-select: none !important;
  798.       max-width: 1px !important;
  799.       max-height: 1px !important;
  800.       overflow: hidden !important;
  801.       visibility: collapse !important;
  802.       display: none !important;
  803.     }
  804.  
  805.     yt-live-chat-ticker-dummy777-item-renderer #container {
  806.       background: inherit;
  807.     }
  808.  
  809.  
  810.     ${cssText8_fonts_pre_render}
  811.  
  812.     ${cssText9_no_backdrop_filter_when_menu_shown}
  813.  
  814.     @supports (contain: layout paint style) {
  815.  
  816.       ${cssText5}
  817.  
  818.     }
  819.  
  820.     @supports (color: var(--general)) {
  821.  
  822.       html {
  823.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  824.       }
  825.  
  826.       ${cssText3_smooth_transform_position}
  827.  
  828.       ${cssText7c_will_change_unset}
  829.  
  830.       ${cssText7b_content_visibility_unset}
  831.  
  832.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  833.           overflow-y: scroll;
  834.           padding-right: 0;
  835.       }
  836.  
  837.       ${cssText4_smooth_transform_forced_props}
  838.  
  839.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  840.           pointer-events: none !important;
  841.       }
  842.  
  843.       #continuations, #continuations * {
  844.           contain: strict;
  845.           position: fixed;
  846.           top: 2px;
  847.           height: 1px;
  848.           width: 2px;
  849.           height: 1px;
  850.           visibility: collapse;
  851.       }
  852.  
  853.       ${cssText6b_show_more_button}
  854.  
  855.       ${cssText6d_input_panel_border}
  856.  
  857.       ${cssText6c_input_panel_overflow}
  858.  
  859.     }
  860.  
  861.  
  862.     @supports (overflow-anchor: auto) {
  863.  
  864.       .no-anchor * {
  865.           overflow-anchor: none;
  866.       }
  867.       .no-anchor > item-anchor {
  868.           overflow-anchor: auto;
  869.       }
  870.  
  871.       item-anchor {
  872.  
  873.           height:1px;
  874.           width: 100%;
  875.           transform: scaleY(0.00001);
  876.           transform-origin:0 0;
  877.           contain: strict;
  878.           opacity:0;
  879.           display:flex;
  880.           position:relative;
  881.           flex-shrink:0;
  882.           flex-grow:0;
  883.           margin-bottom:0;
  884.           overflow:hidden;
  885.           box-sizing:border-box;
  886.           visibility: visible;
  887.           content-visibility: visible;
  888.           contain-intrinsic-size: auto 1px;
  889.           pointer-events:none !important;
  890.  
  891.       }
  892.  
  893.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  894.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  895.       }
  896.  
  897.       html item-anchor {
  898.  
  899.           height: 1px;
  900.           width: 1px;
  901.           top: auto;
  902.           left: auto;
  903.           right: auto;
  904.           bottom: auto;
  905.           transform: translateY(-1px);
  906.           position: absolute;
  907.           z-index: -1;
  908.  
  909.       }
  910.  
  911.     }
  912.  
  913.     @supports (color: var(--pre-rendering)) {
  914.  
  915.       @keyframes dontRenderAnimation {
  916.           0% {
  917.               background-position-x: 3px;
  918.           }
  919.           100% {
  920.               background-position-x: 4px;
  921.           }
  922.       }
  923.  
  924.       .dont-render[class] {
  925.           /* visibility: collapse !important; */
  926.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  927.  
  928.           transform: scale(0.01) !important;
  929.           transform: scale(0.00001) !important;
  930.           transform: scale(0.0000001) !important;
  931.           transform-origin: 0 0 !important;
  932.           z-index: -1 !important;
  933.           contain: strict !important;
  934.           box-sizing: border-box !important;
  935.  
  936.           height: 1px !important;
  937.           height: 0.1px !important;
  938.           height: 0.01px !important;
  939.           height: 0.0001px !important;
  940.           height: 0.000001px !important;
  941.  
  942.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  943.  
  944.           pointer-events: none !important;
  945.           user-select: none !important;
  946.  
  947.       }
  948.  
  949.       #sk35z {
  950.         display: block !important;
  951.  
  952.         visibility: collapse !important;
  953.  
  954.         transform: scale(0.01) !important;
  955.         transform: scale(0.00001) !important;
  956.         transform: scale(0.0000001) !important;
  957.         transform-origin: 0 0 !important;
  958.         z-index: -1 !important;
  959.         contain: strict !important;
  960.         box-sizing: border-box !important;
  961.  
  962.         height: 1px !important;
  963.         height: 0.1px !important;
  964.         height: 0.01px !important;
  965.         height: 0.0001px !important;
  966.         height: 0.000001px !important;
  967.  
  968.         position: absolute !important;
  969.         top: -1000px !important;
  970.         left: -1000px !important;
  971.  
  972.       }
  973.  
  974.     }
  975.  
  976.     [rNgzQ] {
  977.       opacity: 0 !important;
  978.       pointer-events: none !important;
  979.     }
  980.  
  981.  
  982.     ${cssText10_show_more_blinker}
  983.  
  984.     ${cssText11_entire_message_clickable}
  985.  
  986.     ${cssText12_nowrap_tooltip}
  987.  
  988.     ${cssText13_no_text_select_when_menu_visible}
  989.  
  990.     ${cssText14_NO_FILTER_DROPDOWN_BORDER}
  991.  
  992.     ${cssText15_FIX_ANIMATION_TICKER_TEXT_POSITION}
  993.  
  994.     ${cssText16_FIX_AUTHOR_CHIP_BADGE_POSITION}
  995.  
  996.     ${cssText17_FIX_overwidth_banner_message}
  997.  
  998.     ${cssText18_REACTION_ANIMATION_PANEL_CSS_FIX}
  999.  
  1000.   `;
  1001.  
  1002.  
  1003.   const konsole = {
  1004.     nil: Symbol(),
  1005.     logs: [],
  1006.     style: '',
  1007.     log(...args) {
  1008.       konsole.logs.push({
  1009.         type: 'log',
  1010.         msg: [konsole.tag || konsole.nil, ...args, konsole.style || konsole.nil].filter(e => e !== konsole.nil)
  1011.       });
  1012.     },
  1013.     setTag(tag) {
  1014.       konsole.tag = tag;
  1015.     },
  1016.     setStyle(style) {
  1017.       konsole.style = style;
  1018.     },
  1019.     groupCollapsed(...args) {
  1020.  
  1021.       konsole.logs.push({
  1022.         type: 'groupCollapsed',
  1023.         msg: [...args].filter(e => e !== konsole.nil)
  1024.       });
  1025.     },
  1026.     groupEnd() {
  1027.  
  1028.       konsole.logs.push({
  1029.         type: 'groupEnd'
  1030.       })
  1031.     },
  1032.     print() {
  1033.       const copy = konsole.logs.slice(0);
  1034.       konsole.logs.length = 0;
  1035.       for (const { type, msg } of copy) {
  1036.         if (type === 'log') {
  1037.           console.log(...msg)
  1038.         } else if (type === 'groupCollapsed') {
  1039.  
  1040.           console.groupCollapsed(...msg)
  1041.         } else if (type === 'groupEnd') {
  1042.           console.groupEnd();
  1043.         }
  1044.  
  1045.       }
  1046.  
  1047.     }
  1048.   };
  1049.  
  1050.   /*
  1051.   konsole.groupCollapsedX = (text1, text2) => {
  1052.  
  1053.     if(!text2){
  1054.  
  1055.       konsole.groupCollapsed(`%c${text1}`,
  1056.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;"
  1057.     );
  1058.     }else{
  1059.  
  1060.       konsole.groupCollapsed(`%c${text1}%c${text2}`,
  1061.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1062.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1063.     );
  1064.     }
  1065.   }
  1066.  
  1067.   konsole.groupCollapsedX('YouTube Super Fast Chat');
  1068.  
  1069.   setTimeout(()=>{
  1070.  
  1071.     konsole.setTag('[[Fonts Pre-Rendering]]');
  1072.     konsole.log(123);
  1073.     konsole.log('wsd',332, 'ssa');
  1074.     konsole.setTag('');
  1075.   }, 100);
  1076.  
  1077.   setTimeout(()=>{
  1078.  
  1079.     konsole.setTag('[[Fonts Pre-Rendering 2]]');
  1080.     konsole.log(123);
  1081.     konsole.log('wsd',332, 'ssa');
  1082.     konsole.setTag('');
  1083.   }, 300);
  1084.  
  1085.   setTimeout(()=>{
  1086.  
  1087.   konsole.groupEnd();
  1088.   konsole.print();
  1089.   }, 1000);
  1090.  
  1091.   */
  1092.  
  1093.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  1094.  
  1095.   // Create a unique key for the script and check if it is already running
  1096.   const hkey_script = 'mchbwnoasqph';
  1097.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  1098.   win[hkey_script] = true;
  1099.  
  1100.   let unexpectedErr = "";
  1101.  
  1102.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  1103.  
  1104.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  1105.     if (te4 < 3) {
  1106.       setTimeout(() => { });
  1107.       setTimeout(() => { });
  1108.     }
  1109.  
  1110.   }
  1111.  
  1112.   const firstKey = (obj) => {
  1113.     for (const key in obj) {
  1114.       if (obj.hasOwnProperty(key)) return key;
  1115.     }
  1116.     return null;
  1117.   }
  1118.  
  1119.   const firstObjectKey = (obj) => {
  1120.     for (const key in obj) {
  1121.       if (obj.hasOwnProperty(key) && typeof obj[key] === 'object') return key;
  1122.     }
  1123.     return null;
  1124.   }
  1125.  
  1126.   /**
  1127.  * Takes in a __SORTED__ array and inserts the provided value into
  1128.  * the correct, sorted, position.
  1129.  * > https://github.com/bhowell2/binary-insert-js/
  1130.  * @param array the sorted array where the provided value needs to be inserted (in order)
  1131.  * @param insertValue value to be added to the array
  1132.  * @param comparator function that helps determine where to insert the value (
  1133.  */
  1134.   function binaryInsert(array, insertValue, comparator) {
  1135.     let left = 0;
  1136.     let right = array.length;
  1137.  
  1138.     let z;
  1139.     // Directly return if array is empty or the insertValue should be at the end
  1140.     if (right === 0 || (z = comparator(array[right - 1], insertValue)) <= 0) {
  1141.       array.push(insertValue);
  1142.       return array;
  1143.     }
  1144.  
  1145.     // Check if the insertValue should be at the beginning
  1146.     if ((right === 1 ? z : comparator(array[0], insertValue)) >= 0) {
  1147.       array.unshift(insertValue);
  1148.       return array;
  1149.     }
  1150.     ++left; --right;
  1151.  
  1152.     // Main binary search loop to find the insertion position
  1153.     while (left < right) {
  1154.       const mid = Math.floor((right + left) / 2);
  1155.       const compared = comparator(array[mid], insertValue);
  1156.       if (compared < 0) {
  1157.         left = mid + 1;
  1158.       } else if (compared > 0) {
  1159.         right = mid;
  1160.       } else {
  1161.         // If equal, insert at the mid position
  1162.         left = right = mid;
  1163.         break;
  1164.       }
  1165.     }
  1166.  
  1167.     // Insertion is always at the right position due to the nature of the binary search
  1168.     array.splice(right, 0, insertValue);
  1169.     return array;
  1170.   }
  1171.  
  1172.  
  1173.  
  1174.  
  1175.   class LimitedSizeSet extends Set {
  1176.     constructor(n) {
  1177.       super();
  1178.       this.limit = n;
  1179.     }
  1180.  
  1181.     add(key) {
  1182.       if (!super.has(key)) {
  1183.         super.add(key);
  1184.         let n = super.size - this.limit;
  1185.         if (n > 0) {
  1186.           const iterator = super.values();
  1187.           do {
  1188.             const firstKey = iterator.next().value; // Get the first (oldest) key
  1189.             super.delete(firstKey); // Delete the oldest key
  1190.           } while (--n > 0)
  1191.         }
  1192.       }
  1193.     }
  1194.  
  1195.     removeAdd(key) {
  1196.       super.delete(key);
  1197.       super.add(key);
  1198.     }
  1199.  
  1200.   }
  1201.  
  1202.   // function removeElementFromArray(arr, index) {
  1203.   //   if (index >= 0 && index < arr.length) {
  1204.   //     arr.splice(index, 1);
  1205.   //   }
  1206.   // }
  1207.  
  1208.   // function getRandomInt(a, b) {
  1209.   //   // Ensure that 'a' and 'b' are integers
  1210.   //   a = Math.ceil(a);
  1211.   //   b = Math.floor(b);
  1212.  
  1213.   //   // Generate a random integer in the range [a, b]
  1214.   //   return Math.floor(Math.random() * (b - a + 1)) + a;
  1215.   // }
  1216.  
  1217.   function deepCopy(obj, skipKeys) {
  1218.     skipKeys = skipKeys || [];
  1219.     if (!obj || typeof obj !== 'object') return obj;
  1220.     if (Array.isArray(obj)) {
  1221.       return obj.map(item => deepCopy(item, skipKeys));
  1222.     }
  1223.     const copy = {};
  1224.     for (let key in obj) {
  1225.       if (!skipKeys.includes(key)) {
  1226.         copy[key] = deepCopy(obj[key], skipKeys);
  1227.       }
  1228.     }
  1229.     return copy;
  1230.   }
  1231.  
  1232.   class Mutex {
  1233.  
  1234.     constructor() {
  1235.       this.p = Promise.resolve()
  1236.     }
  1237.  
  1238.     /**
  1239.      *  @param {(lockResolve: () => void)} f
  1240.      */
  1241.     lockWith(f) {
  1242.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  1243.     }
  1244.  
  1245.   }
  1246.  
  1247.   const PromiseExternal = ((resolve_, reject_) => {
  1248.     const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  1249.     return class PromiseExternal extends Promise {
  1250.       constructor(cb = h) {
  1251.         super(cb);
  1252.         if (cb === h) {
  1253.           /** @type {(value: any) => void} */
  1254.           this.resolve = resolve_;
  1255.           /** @type {(reason?: any) => void} */
  1256.           this.reject = reject_;
  1257.         }
  1258.       }
  1259.     };
  1260.   })();
  1261.  
  1262.  
  1263.   const createPipeline = () => {
  1264.     let pipelineMutex = Promise.resolve();
  1265.     const pipelineExecution = fn => {
  1266.       return new Promise((resolve, reject) => {
  1267.         pipelineMutex = pipelineMutex.then(async () => {
  1268.           let res;
  1269.           try {
  1270.             res = await fn();
  1271.           } catch (e) {
  1272.             console.log('error_F1', e);
  1273.             reject(e);
  1274.           }
  1275.           resolve(res);
  1276.         }).catch(console.warn);
  1277.       });
  1278.     };
  1279.     return pipelineExecution;
  1280.   };
  1281.  
  1282.   const tickerPE = createPipeline();
  1283.  
  1284.   /** @type {typeof PromiseExternal.prototype | null} */
  1285.   let relayPromise = null;
  1286.  
  1287.  
  1288.   /** @type {typeof PromiseExternal.prototype | null} */
  1289.   let onPlayStateChangePromise = null;
  1290.  
  1291.  
  1292.  
  1293.   let playEventsStack = Promise.resolve();
  1294.  
  1295.  
  1296.   let playerProgressChangedArg1 = null;
  1297.   let playerProgressChangedArg2 = null;
  1298.   let playerProgressChangedArg3 = null;
  1299.  
  1300.  
  1301.   function dr(s) {
  1302.     // reserved for future use
  1303.     return s;
  1304.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  1305.   }
  1306.  
  1307.   const insp = o => o ? (o.polymerController || o.inst || o || 0) : (o || 0);
  1308.   const indr = o => insp(o).$ || o.$ || 0;
  1309.  
  1310.   const getProto = (element) => {
  1311.     if (element) {
  1312.       const cnt = insp(element);
  1313.       return cnt.constructor.prototype || null;
  1314.     }
  1315.     return null;
  1316.   }
  1317.  
  1318.   const assertor = (f) => f() || console.assert(false, f + "");
  1319.  
  1320.   const fnIntegrity = (f, d) => {
  1321.     if (!f || typeof f !== 'function') {
  1322.       console.warn('f is not a function', f);
  1323.       return;
  1324.     }
  1325.     let p = f + "", s = 0, j = -1, w = 0;
  1326.     for (let i = 0, l = p.length; i < l; i++) {
  1327.       const t = p[i];
  1328.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  1329.         if (j < i - 1) w++;
  1330.         j = i;
  1331.       } else {
  1332.         s++;
  1333.       }
  1334.     }
  1335.     let itz = `${f.length}.${s}.${w}`;
  1336.     if (!d) {
  1337.       return itz;
  1338.     } else if (itz !== d) {
  1339.       console.warn('fnIntegrity=false', itz);
  1340.       return false;
  1341.     } else {
  1342.       return true;
  1343.     }
  1344.   }
  1345.  
  1346.  
  1347.   const px2cm = (px) => px * window.devicePixelRatio * 0.026458333;
  1348.   const px2mm = (px) => px * window.devicePixelRatio * 0.26458333;
  1349.  
  1350.  
  1351.   ; (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS || DISABLE_FLAGS_SHADYDOM_FREE) && (() => {
  1352.  
  1353.     const _config_ = () => {
  1354.       try {
  1355.         return ytcfg.data_;
  1356.       } catch (e) { }
  1357.       return null;
  1358.     };
  1359.  
  1360.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1361.  
  1362.       // console.log(700)
  1363.  
  1364.       if (!EXPERIMENT_FLAGS) return;
  1365.  
  1366.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1367.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1368.           // EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true; // timestamp toggle issue
  1369.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1370.           // console.log(701)
  1371.         }
  1372.       }
  1373.  
  1374.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1375.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1376.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1377.         // console.log(702);
  1378.       }
  1379.  
  1380.       if (DISABLE_FLAGS_SHADYDOM_FREE) {
  1381.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_node_methods = false;
  1382.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_query_methods = false;
  1383.         EXPERIMENT_FLAGS.enable_shadydom_free_scoped_readonly_properties_batch_one = false;
  1384.         EXPERIMENT_FLAGS.enable_shadydom_free_parent_node = false;
  1385.         EXPERIMENT_FLAGS.enable_shadydom_free_children = false;
  1386.         EXPERIMENT_FLAGS.enable_shadydom_free_last_child = false;
  1387.       }
  1388.  
  1389.       //   EXPERIMENT_FLAGS.enable_button_behavior_reuse = false;
  1390.  
  1391.     };
  1392.  
  1393.     const uf = (config_) => {
  1394.       config_ = config_ || _config_();
  1395.       if (config_) {
  1396.         const { EXPERIMENT_FLAGS, EXPERIMENTS_FORCED_FLAGS } = config_;
  1397.         if (EXPERIMENT_FLAGS) {
  1398.           flagsFn(EXPERIMENT_FLAGS);
  1399.           if (EXPERIMENTS_FORCED_FLAGS) flagsFn(EXPERIMENTS_FORCED_FLAGS);
  1400.         }
  1401.       }
  1402.     }
  1403.  
  1404.     window._ytConfigHacks.add((config_) => {
  1405.       uf(config_);
  1406.     });
  1407.  
  1408.     uf();
  1409.  
  1410.   })();
  1411.  
  1412.   if (DISABLE_Translation_By_Google) {
  1413.  
  1414.     let mo = new MutationObserver(() => {
  1415.  
  1416.       if (!mo) return;
  1417.       let h = document.head;
  1418.       if (!h) return;
  1419.       mo.disconnect();
  1420.       mo.takeRecords();
  1421.       mo = null;
  1422.  
  1423.       let meta = document.createElement('meta');
  1424.       meta.setAttribute('name', 'google');
  1425.       meta.setAttribute('content', 'notranslate');
  1426.       h.appendChild(meta);
  1427.  
  1428.  
  1429.     });
  1430.     mo.observe(document, { subtree: true, childList: true });
  1431.   }
  1432.  
  1433.  
  1434.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  1435.  
  1436.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  1437.   if (!isContainSupport) {
  1438.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  1439.   }
  1440.  
  1441.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  1442.   if (!isOverflowAnchorSupport) {
  1443.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  1444.   }
  1445.  
  1446.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && isOverflowAnchorSupport && ENABLE_NO_SMOOTH_TRANSFORM;
  1447.  
  1448.   let hasTimerModified = null;
  1449.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  1450.  
  1451.   const fxOperator = (proto, propertyName) => {
  1452.     let propertyDescriptorGetter = null;
  1453.     try {
  1454.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  1455.     } catch (e) { }
  1456.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  1457.       try {
  1458.  
  1459.         return propertyDescriptorGetter.call(dr(e));
  1460.       } catch (e) { }
  1461.       return e[propertyName];
  1462.     } : (e) => e[propertyName];
  1463.   };
  1464.  
  1465.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  1466.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  1467.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  1468.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  1469.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  1470.  
  1471.   const groupCollapsed = (text1, text2) => {
  1472.  
  1473.     console.groupCollapsed(`%c${text1}%c${text2}`,
  1474.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1475.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1476.     );
  1477.   }
  1478.  
  1479.   // const microNow = () => performance.now() + (performance.timeOrigin || performance.timing.navigationStart);
  1480.  
  1481.  
  1482.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  1483.   const onRegistryReady = (callback) => {
  1484.     if (typeof customElements === 'undefined') {
  1485.       if (!('__CE_registry' in document)) {
  1486.         // https://github.com/webcomponents/polyfills/
  1487.         Object.defineProperty(document, '__CE_registry', {
  1488.           get() {
  1489.             // return undefined
  1490.           },
  1491.           set(nv) {
  1492.             if (typeof nv == 'object') {
  1493.               delete this.__CE_registry;
  1494.               this.__CE_registry = nv;
  1495.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  1496.             }
  1497.             return true;
  1498.           },
  1499.           enumerable: false,
  1500.           configurable: true
  1501.         })
  1502.       }
  1503.       let eventHandler = (evt) => {
  1504.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1505.         const f = callback;
  1506.         callback = null;
  1507.         eventHandler = null;
  1508.         f();
  1509.       };
  1510.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1511.     } else {
  1512.       callback();
  1513.     }
  1514.   };
  1515.  
  1516.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1517.  
  1518.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1519.  
  1520.     return new Promise(resolve => {
  1521.  
  1522.       let ro = new ResizeObserver(entries => {
  1523.         if (entries && entries.length >= 1) {
  1524.           resolve();
  1525.           ro.disconnect();
  1526.           ro = null;
  1527.         }
  1528.       });
  1529.       ro.observe(sizingTarget);
  1530.  
  1531.  
  1532.  
  1533.     });
  1534.  
  1535.   } : (sizingTarget) => {
  1536.  
  1537.  
  1538.     return new Promise(resolve => {
  1539.  
  1540.       let io = new IntersectionObserver(entries => {
  1541.         if (entries && entries.length >= 1) {
  1542.           resolve();
  1543.           io.disconnect();
  1544.           io = null;
  1545.         }
  1546.       });
  1547.       io.observe(sizingTarget);
  1548.  
  1549.  
  1550.  
  1551.     });
  1552.  
  1553.   };
  1554.  
  1555.   /* globals WeakRef:false */
  1556.  
  1557.   /** @type {(o: Object | null) => WeakRef | null} */
  1558.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1559.  
  1560.   /** @type {(wr: Object | null) => Object | null} */
  1561.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1562.  
  1563.   const getLCRDummy = () => {
  1564.     // direct createElement or createComponent_ will make the emoji rendering crashed. reason TBC
  1565.  
  1566.     return Promise.all([customElements.whenDefined('yt-live-chat-app'), customElements.whenDefined('yt-live-chat-renderer')]).then(async () => {
  1567.  
  1568.       const tag = "yt-live-chat-renderer"
  1569.       let dummy = document.querySelector(tag);
  1570.       if (!dummy) {
  1571.  
  1572.         let mo = null;
  1573.  
  1574.         const ytLiveChatApp = document.querySelector('yt-live-chat-app') || document.createElement('yt-live-chat-app');
  1575.  
  1576.         const lcaProto = getProto(ytLiveChatApp);
  1577.  
  1578.         dummy = await new Promise(resolve => {
  1579.  
  1580.           if (typeof lcaProto.createComponent_ === 'function' && !lcaProto.createComponent99_) {
  1581.  
  1582.             lcaProto.createComponent99_ = lcaProto.createComponent_;
  1583.             lcaProto.createComponent98_ = function (a, b, c) {
  1584.               // (3) ['yt-live-chat-renderer', {…}, true]
  1585.               const r = this.createComponent99_.apply(this, arguments);
  1586.               if (a === 'yt-live-chat-renderer') {
  1587.                 resolve(r);
  1588.               }
  1589.               return r;
  1590.             };
  1591.             lcaProto.createComponent_ = lcaProto.createComponent98_;
  1592.  
  1593.           } else {
  1594.  
  1595.             mo = new MutationObserver(() => {
  1596.               const t = document.querySelector(tag);
  1597.               if (t) {
  1598.                 resolve(t);
  1599.               }
  1600.             });
  1601.             mo.observe(document, { subtree: true, childList: true })
  1602.           }
  1603.  
  1604.         });
  1605.  
  1606.         if (mo) {
  1607.           mo.disconnect();
  1608.           mo.takeRecords();
  1609.           mo = null;
  1610.         }
  1611.  
  1612.         if (lcaProto.createComponent99_ && lcaProto.createComponent_ && lcaProto.createComponent98_ === lcaProto.createComponent_) {
  1613.           lcaProto.createComponent_ = lcaProto.createComponent99_;
  1614.           lcaProto.createComponent99_ = null;
  1615.           lcaProto.createComponent98_ = null;
  1616.         }
  1617.  
  1618.       }
  1619.       return dummy;
  1620.  
  1621.     });
  1622.   }
  1623.  
  1624.   const { addCssManaged } = (() => {
  1625.  
  1626.     const addFontPreRendering = () => {
  1627.  
  1628.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1629.  
  1630.       let efsContainer = document.createElement('elzm-fonts');
  1631.       efsContainer.id = 'elzm-fonts-yk75g'
  1632.  
  1633.       const arr = [];
  1634.       let p = document.createElement('elzm-font');
  1635.       arr.push(p);
  1636.  
  1637.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1638.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1639.  
  1640.           p = document.createElement('elzm-font');
  1641.           p.style.fontWeight = size;
  1642.           arr.push(p);
  1643.         }
  1644.       }
  1645.  
  1646.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1647.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1648.  
  1649.           p = document.createElement('elzm-font');
  1650.           p.style.fontFamily = 'Roboto';
  1651.           p.style.fontWeight = size;
  1652.           arr.push(p);
  1653.         }
  1654.       }
  1655.  
  1656.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1657.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1658.  
  1659.           p = document.createElement('elzm-font');
  1660.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1661.           p.style.fontWeight = size;
  1662.           arr.push(p);
  1663.         }
  1664.       }
  1665.  
  1666.  
  1667.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1668.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1669.  
  1670.           p = document.createElement('elzm-font');
  1671.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1672.           p.style.fontWeight = size;
  1673.           arr.push(p);
  1674.         }
  1675.       }
  1676.  
  1677.  
  1678.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1679.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1680.  
  1681.           p = document.createElement('elzm-font');
  1682.           p.style.fontFamily = 'sans-serif';
  1683.           p.style.fontWeight = size;
  1684.           arr.push(p);
  1685.         }
  1686.       }
  1687.  
  1688.       console.log('number of elzm-font elements', arr.length);
  1689.  
  1690.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1691.  
  1692.       (document.body || document.documentElement).appendChild(efsContainer);
  1693.  
  1694.  
  1695.       console.log('elzm-font elements have been added to the page for rendering.');
  1696.  
  1697.       console.groupEnd();
  1698.  
  1699.     }
  1700.  
  1701.     let isCssAdded = false;
  1702.  
  1703.     function addCssElement() {
  1704.       let s = document.createElement('style');
  1705.       s.id = 'ewRvC';
  1706.       return s;
  1707.     }
  1708.  
  1709.     const addCssManaged = () => {
  1710.       if (!isCssAdded && document.documentElement && document.head) {
  1711.         isCssAdded = true;
  1712.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1713.         if (ENABLE_FONT_PRE_RENDERING) {
  1714.           Promise.resolve().then(addFontPreRendering)
  1715.         }
  1716.       }
  1717.     }
  1718.  
  1719.     return { addCssManaged };
  1720.   })();
  1721.  
  1722.  
  1723.   const { setupStyle } = (() => {
  1724.  
  1725.     const sp7 = Symbol();
  1726.  
  1727.     const proxyHelperFn = (dummy) => ({
  1728.  
  1729.       get(target, prop) {
  1730.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1731.       },
  1732.       set(target, prop, value) {
  1733.         if (!(prop in dummy)) {
  1734.           target[prop] = value;
  1735.         }
  1736.         return true;
  1737.       },
  1738.       has(target, prop) {
  1739.         return (prop in target);
  1740.       },
  1741.       deleteProperty(target, prop) {
  1742.         return true;
  1743.       },
  1744.       ownKeys(target) {
  1745.         return Object.keys(target);
  1746.       },
  1747.       defineProperty(target, key, descriptor) {
  1748.         return Object.defineProperty(target, key, descriptor);
  1749.       },
  1750.       getOwnPropertyDescriptor(target, key) {
  1751.         return Object.getOwnPropertyDescriptor(target, key);
  1752.       },
  1753.  
  1754.     });
  1755.  
  1756.     const setupStyle = (m1, m2) => {
  1757.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1758.  
  1759.       const dummy1v = {
  1760.         transform: '',
  1761.         height: '',
  1762.         minHeight: '',
  1763.         paddingBottom: '',
  1764.         paddingTop: ''
  1765.       };
  1766.  
  1767.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1768.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1769.         dummy1v[k] = dummyStyleFn(k);
  1770.       }
  1771.  
  1772.       const dummy1p = proxyHelperFn(dummy1v);
  1773.       const sp1v = new Proxy(m1.style, dummy1p);
  1774.       const sp2v = new Proxy(m2.style, dummy1p);
  1775.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1776.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1777.       m1.removeAttribute("style");
  1778.       m2.removeAttribute("style");
  1779.  
  1780.     }
  1781.  
  1782.     return { setupStyle };
  1783.  
  1784.   })();
  1785.  
  1786.  
  1787.  
  1788.   function setThumbnails(config) {
  1789.  
  1790.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1791.  
  1792.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1793.  
  1794.  
  1795.       if (thumbnails && thumbnails.length > 0) {
  1796.         if (flag0 > 0 && thumbnails.length > 1) {
  1797.           let pSize = 0;
  1798.           let newThumbnails = [];
  1799.           for (const thumbnail of thumbnails) {
  1800.             if (!thumbnail || !thumbnail.url) continue;
  1801.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1802.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1803.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1804.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1805.               newThumbnails.push(thumbnail);
  1806.               if (imageLinks) imageLinks.add(thumbnail.url);
  1807.             }
  1808.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1809.               pSize = thumbnail.width;
  1810.             }
  1811.           }
  1812.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1813.             baseObject.thumbnails = newThumbnails;
  1814.           } else {
  1815.             newThumbnails.length = 0;
  1816.           }
  1817.           newThumbnails = null;
  1818.         } else {
  1819.           for (const thumbnail of thumbnails) {
  1820.             if (thumbnail && thumbnail.url) {
  1821.               if (imageLinks) imageLinks.add(thumbnail.url);
  1822.             }
  1823.           }
  1824.         }
  1825.       }
  1826.  
  1827.     }
  1828.   }
  1829.  
  1830.   function fixLiveChatItem(item, imageLinks) {
  1831.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1832.     if (liveChatTextMessageRenderer) {
  1833.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1834.       if (messageRuns && messageRuns.length > 0) {
  1835.         for (const run of messageRuns) {
  1836.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1837.           setThumbnails({
  1838.             baseObject: emojiImage,
  1839.             thumbnails: emojiImage.thumbnails,
  1840.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1841.             imageLinks
  1842.           });
  1843.         }
  1844.       }
  1845.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1846.       setThumbnails({
  1847.         baseObject: authorPhoto,
  1848.         thumbnails: authorPhoto.thumbnails,
  1849.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1850.         imageLinks
  1851.       });
  1852.     }
  1853.   }
  1854.  
  1855.  
  1856.  
  1857.   let kptPF = null;
  1858.   const emojiPrefetched = new LimitedSizeSet(PREFETCH_LIMITED_SIZE_EMOJI);
  1859.   const authorPhotoPrefetched = new LimitedSizeSet(PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO);
  1860.  
  1861.   function linker(link, rel, href, _as) {
  1862.     return new Promise(resolve => {
  1863.       if (!link) link = document.createElement('link');
  1864.       link.rel = rel;
  1865.       if (_as) link.setAttribute('as', _as);
  1866.       link.onload = function () {
  1867.         resolve({
  1868.           link: this,
  1869.           success: true
  1870.         })
  1871.         this.remove();
  1872.       };
  1873.       link.onerror = function () {
  1874.         resolve({
  1875.           link: this,
  1876.           success: false
  1877.         });
  1878.         this.remove();
  1879.       };
  1880.       link.href = href;
  1881.       document.head.appendChild(link);
  1882.       link = null;
  1883.     });
  1884.   }
  1885.  
  1886.  
  1887.  
  1888.   const cleanContext = async (win) => {
  1889.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1890.     try {
  1891.       let mx = 16; // MAX TRIAL
  1892.       const frameId = 'vanillajs-iframe-v1';
  1893.       /** @type {HTMLIFrameElement | null} */
  1894.       let frame = document.getElementById(frameId);
  1895.       let removeIframeFn = null;
  1896.       if (!frame) {
  1897.         frame = document.createElement('iframe');
  1898.         frame.id = frameId;
  1899.         const blobURL = typeof webkitCancelAnimationFrame === 'function' && typeof kagi === 'undefined' ? (frame.src = URL.createObjectURL(new Blob([], { type: 'text/html' }))) : null; // avoid Brave Crash
  1900.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1901.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1902.         n.appendChild(frame);
  1903.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1904.         const root = document.documentElement;
  1905.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1906.         if (blobURL) Promise.resolve().then(() => URL.revokeObjectURL(blobURL));
  1907.  
  1908.         removeIframeFn = (setTimeout) => {
  1909.           const removeIframeOnDocumentReady = (e) => {
  1910.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1911.             e = n;
  1912.             n = win = removeIframeFn = 0;
  1913.             setTimeout ? setTimeout(() => e.remove(), 200) : e.remove();
  1914.           }
  1915.           if (!setTimeout || document.readyState !== 'loading') {
  1916.             removeIframeOnDocumentReady();
  1917.           } else {
  1918.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1919.           }
  1920.         }
  1921.       }
  1922.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1923.       const fc = frame.contentWindow;
  1924.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1925.       try {
  1926.         const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1927.         const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1928.         for (let k in res) res[k] = res[k].bind(win); // necessary
  1929.         if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1930.  
  1931.         /** @type {HTMLElement} */
  1932.         const HTMLElementProto = fc.HTMLElement.prototype;
  1933.         /** @type {EventTarget} */
  1934.         const EventTargetProto = fc.EventTarget.prototype;
  1935.         // jsonParseFix = {
  1936.         //   _JSON: fc.JSON, _parse: fc.JSON.parse
  1937.         // }
  1938.         return {
  1939.           ...res,
  1940.           animate: HTMLElementProto.animate,
  1941.           addEventListener: EventTargetProto.addEventListener,
  1942.           removeEventListener: EventTargetProto.removeEventListener
  1943.         };
  1944.       } catch (e) {
  1945.         if (removeIframeFn) removeIframeFn();
  1946.         return null;
  1947.       }
  1948.     } catch (e) {
  1949.       console.warn(e);
  1950.       return null;
  1951.     }
  1952.   };
  1953.  
  1954.  
  1955.   let xoIcjPr = null;
  1956.   window.addEventListener('message', (evt) => {
  1957.     if ((evt || 0).data === 'xoIcj' && xoIcjPr !== null) xoIcjPr.resolve();
  1958.   });
  1959.   const timelineResolve = async () => {
  1960.     if (xoIcjPr !== null) {
  1961.       await xoIcjPr.then();
  1962.       return;
  1963.     }
  1964.     xoIcjPr = new PromiseExternal();
  1965.     window.postMessage('xoIcj');
  1966.     await xoIcjPr.then();
  1967.     xoIcjPr = null;
  1968.   }
  1969.  
  1970.   cleanContext(win).then(__CONTEXT__ => {
  1971.     if (!__CONTEXT__) return null;
  1972.  
  1973.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1974.  
  1975.     const wmComputedStyle = new WeakMap();
  1976.     const getComputedStyleCached = (elem) => {
  1977.       let cs = wmComputedStyle.get(elem);
  1978.       if (!cs) {
  1979.         cs = getComputedStyle(elem);
  1980.         wmComputedStyle.set(elem, cs);
  1981.       }
  1982.       return cs;
  1983.     }
  1984.  
  1985.  
  1986.     const isGPUAccelerationAvailable = (() => {
  1987.       // https://gist.github.com/cvan/042b2448fcecefafbb6a91469484cdf8
  1988.       try {
  1989.         const canvas = document.createElement('canvas');
  1990.         return !!(canvas.getContext('webgl') || canvas.getContext('experimental-webgl'));
  1991.       } catch (e) {
  1992.         return false;
  1993.       }
  1994.     })();
  1995.  
  1996.     const foregroundPromiseFn_noGPU = (() => {
  1997.  
  1998.       if (isGPUAccelerationAvailable) return null;
  1999.  
  2000.       const pd = Object.getOwnPropertyDescriptor(Document.prototype, 'visibilityState');
  2001.       if (!pd || typeof pd.get !== 'function') return null;
  2002.       const pdGet = pd.get;
  2003.  
  2004.       let pr = null;
  2005.  
  2006.       let hState = pdGet.call(document) === 'hidden';
  2007.       // let cid = 0;
  2008.       pureAddEventListener.call(document, 'visibilitychange', (evt) => {
  2009.         const newHState = pdGet.call(document) === 'hidden';
  2010.         if (hState !== newHState) {
  2011.           // if (cid > 0) cid = clearInterval(cid);
  2012.           hState = newHState;
  2013.           if (!hState && pr) pr = pr.resolve();
  2014.         }
  2015.       });
  2016.  
  2017.       // cid = setInterval(() => {
  2018.       //   const newHState = document.visibilityState === 'hidden';
  2019.       //   if (hState !== newHState) {
  2020.       //     hState = newHState;
  2021.       //     if (!hState && pr) pr = pr.resolve();
  2022.       //   }
  2023.       // }, 100);
  2024.  
  2025.  
  2026.       return (() => {
  2027.         if (pr) return pr;
  2028.         const w = ((!hState && setTimeout(() => {
  2029.           if (!hState && pr === w) pr = pr.resolve();
  2030.         })), (pr = new PromiseExternal()));
  2031.         return w;
  2032.       });
  2033.  
  2034.     })();
  2035.  
  2036.     // window.foregroundPromiseFn_noGPU = foregroundPromiseFn_noGPU;
  2037.  
  2038.     let rafPromise = null;
  2039.     const getRafPromise = () => rafPromise || (rafPromise = new Promise(resolve => {
  2040.       requestAnimationFrame(hRes => {
  2041.         rafPromise = null;
  2042.         resolve(hRes);
  2043.       });
  2044.     }));
  2045.     const foregroundPromiseFn = foregroundPromiseFn_noGPU || getRafPromise;
  2046.  
  2047.     const iAFP = foregroundPromiseFn_noGPU ? foregroundPromiseFn_noGPU : typeof IntersectionObserver === 'undefined' ? getRafPromise : (() => {
  2048.  
  2049.       const ioWM = new WeakMap();
  2050.       const ek = Symbol();
  2051.       /** @type {IntersectionObserverCallback} */
  2052.       const ioCb = (entries, observer) => {
  2053.         /** @type {PromiseExternal} */
  2054.         const pr = observer[ek];
  2055.         const resolve = pr.resolve;
  2056.         let target;
  2057.         if (resolve && (target = ((entries ? entries[0] : 0) || 0).target) instanceof Element) {
  2058.           pr.resolve = null;
  2059.           observer.unobserve(target);
  2060.           resolve();
  2061.         }
  2062.       };
  2063.       /**
  2064.        * 
  2065.        * @param {Element} elm 
  2066.        * @returns {Promise<void>}
  2067.        */
  2068.       const iAFP = (elm) => {
  2069.         let io = ioWM.get(elm);
  2070.         if (!io) {
  2071.           io = new IntersectionObserver(ioCb);
  2072.           ioWM.set(elm, io); // strong reference
  2073.         }
  2074.         let pr = io[ek];
  2075.         if (!pr) {
  2076.           pr = io[ek] = new PromiseExternal();
  2077.           io.observe(elm);
  2078.         }
  2079.         return pr;
  2080.       }
  2081.  
  2082.       return iAFP;
  2083.  
  2084.     })();
  2085.  
  2086.     let playerState = null;
  2087.     let _playerState = null;
  2088.     let lastPlayerProgress = null;
  2089.     let relayCount = 0;
  2090.     let playerEventsByIframeRelay = false;
  2091.     let isPlayProgressTriggered = false;
  2092.     let waitForInitialDataCompletion = 0;
  2093.  
  2094.  
  2095.  
  2096.     let aeConstructor = null;
  2097.  
  2098.     // << __openedChanged82 >>
  2099.     let currentMenuPivotWR = null;
  2100.  
  2101.     // << if DO_PARTICIPANT_LIST_HACKS >>
  2102.     const beforeParticipantsMap = new WeakMap();
  2103.     // << end >>
  2104.  
  2105.  
  2106.  
  2107.     // << if onRegistryReadyForDOMOperations >>
  2108.  
  2109.     let dt0 = Date.now() - 2000;
  2110.     const dateNow = () => Date.now() - dt0;
  2111.     // let lastScroll = 0;
  2112.     // let lastLShow = 0;
  2113.     let lastWheel = 0;
  2114.     let lastMouseDown = 0;
  2115.     let lastMouseUp = 0;
  2116.     let currentMouseDown = false;
  2117.     let lastTouchDown = 0;
  2118.     let lastTouchUp = 0;
  2119.     let currentTouchDown = false;
  2120.     let lastUserInteraction = 0;
  2121.  
  2122.     let scrollChatFn = null;
  2123.  
  2124.     let skipDontRender = true; // true first; false by flushActiveItems_
  2125.     let allowDontRender = null;
  2126.  
  2127.     // ---- #items mutation ----
  2128.     let sk35zResolveFn = null;
  2129.     let firstList = true;
  2130.  
  2131.     // << end >>
  2132.  
  2133.     class RAFHub {
  2134.       constructor() {
  2135.         /** @type {number} */
  2136.         this.startAt = 8170;
  2137.         /** @type {number} */
  2138.         this.counter = 0;
  2139.         /** @type {number} */
  2140.         this.rid = 0;
  2141.         /** @type {Map<number, FrameRequestCallback>} */
  2142.         this.funcs = new Map();
  2143.         const funcs = this.funcs;
  2144.         /** @type {FrameRequestCallback} */
  2145.         this.bCallback = this.mCallback.bind(this);
  2146.         this.pClear = () => funcs.clear();
  2147.         this.keepRAF = false;
  2148.       }
  2149.       /** @param {DOMHighResTimeStamp} highResTime */
  2150.       mCallback(highResTime) {
  2151.         this.rid = 0;
  2152.         Promise.resolve().then(this.pClear);
  2153.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  2154.       }
  2155.       /** @param {FrameRequestCallback} f */
  2156.       request(f) {
  2157.         if (this.counter > 1e9) this.counter = 9;
  2158.         let cid = this.startAt + (++this.counter);
  2159.         this.funcs.set(cid, f);
  2160.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  2161.         return cid;
  2162.       }
  2163.       /** @param {number} cid */
  2164.       cancel(cid) {
  2165.         cid = +cid;
  2166.         if (cid > 0) {
  2167.           if (cid <= this.startAt) {
  2168.             return cancelAnimationFrame(cid);
  2169.           }
  2170.           if (this.rid > 0) {
  2171.             this.funcs.delete(cid);
  2172.             if (this.funcs.size === 0 && !this.keepRAF) {
  2173.               cancelAnimationFrame(this.rid);
  2174.               this.rid = 0;
  2175.             }
  2176.           }
  2177.         }
  2178.       }
  2179.     }
  2180.  
  2181.     function basePrefetching() {
  2182.  
  2183.       new Promise(resolve => {
  2184.  
  2185.         if (document.readyState !== 'loading') {
  2186.           resolve();
  2187.         } else {
  2188.           win.addEventListener("DOMContentLoaded", resolve, false);
  2189.         }
  2190.  
  2191.       }).then(() => {
  2192.         const hostL1 = [
  2193.           'https://www.youtube.com', 'https://googlevideo.com',
  2194.           'https://googleapis.com', 'https://accounts.youtube.com',
  2195.           'https://www.gstatic.com', 'https://ggpht.com',
  2196.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  2197.         ];
  2198.  
  2199.         const hostL2 = [
  2200.           'https://youtube.com',
  2201.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  2202.         ];
  2203.  
  2204.         let link = null;
  2205.  
  2206.         function kn() {
  2207.  
  2208.           link = document.createElement('link');
  2209.           if (link.relList && link.relList.supports) {
  2210.             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)
  2211.           } else {
  2212.             kptPF = 0;
  2213.           }
  2214.  
  2215.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  2216.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  2217.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  2218.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  2219.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  2220.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  2221.           console.groupEnd();
  2222.  
  2223.         }
  2224.  
  2225.         for (const h of hostL1) {
  2226.  
  2227.           if (kptPF === null) kn();
  2228.           if (ENABLE_BASE_PREFETCHING) {
  2229.             // if (kptPF & 1) {
  2230.             //   linker(link, 'dns-prefetch', h);
  2231.             //   link = null;
  2232.             // }
  2233.             if (kptPF & 2) {
  2234.               linker(link, 'preconnect', h);
  2235.               link = null;
  2236.             }
  2237.           }
  2238.         }
  2239.  
  2240.         for (const h of hostL2) {
  2241.           if (kptPF === null) kn();
  2242.           if (ENABLE_BASE_PREFETCHING) {
  2243.             if (kptPF & 1) {
  2244.               linker(link, 'dns-prefetch', h);
  2245.               link = null;
  2246.             }
  2247.           }
  2248.         }
  2249.  
  2250.       })
  2251.  
  2252.  
  2253.     }
  2254.  
  2255.     if (DO_LINK_PREFETCH) basePrefetching();
  2256.  
  2257.     const { notifyPath7081 } = (() => {
  2258.       // DO_PARTICIPANT_LIST_HACKS
  2259.  
  2260.       const mutexParticipants = new Mutex();
  2261.  
  2262.       let uvid = 0;
  2263.       let r95dm = 0;
  2264.       let c95dm = -1;
  2265.  
  2266.       const foundMap = (base, content) => {
  2267.         /*
  2268.           let lastSearch = 0;
  2269.           let founds = base.map(baseEntry => {
  2270.             let search = content.indexOf(baseEntry, lastSearch);
  2271.             if (search < 0) return false;
  2272.             lastSearch = search + 1;
  2273.             return true;
  2274.           });
  2275.           return founds;
  2276.         */
  2277.         const contentSet = new Set(content);
  2278.         return base.map(baseEntry => contentSet.has(baseEntry));
  2279.  
  2280.       }
  2281.  
  2282.  
  2283.  
  2284.       let participantsForSpliceWR = null;
  2285.  
  2286.       class IndexSpliceEntry {
  2287.         /**
  2288.          *
  2289.          * @param {number} _index
  2290.          * @param {number} _addedCount
  2291.          * @param {any[]} _removed
  2292.          */
  2293.         constructor(_index, _addedCount, _removed) {
  2294.           this.index = _index;
  2295.           this.addedCount = _addedCount;
  2296.           this.removed = _removed;
  2297.         }
  2298.         get __proxy312__() {
  2299.           return 1
  2300.         }
  2301.         get type() {
  2302.           return 'splice'
  2303.         }
  2304.         get object() {
  2305.           return kRef(participantsForSpliceWR); // avoid memory leakage
  2306.         }
  2307.       }
  2308.  
  2309.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  2310.  
  2311.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  2312.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  2313.  
  2314.         const nAfter = foundsForAfter.length;
  2315.         const nBefore = foundsForBefore.length;
  2316.  
  2317.         const indexSplices = [];
  2318.         const contentUpdates = [];
  2319.         participantsForSpliceWR = null;
  2320.         for (let i = 0, j = 0; i < nBefore || j < nAfter;) {
  2321.           if (beforeParticipants[i] === participants[j]) {
  2322.             i++; j++;
  2323.           } else if (idsBefore[i] === idsAfter[j]) {
  2324.             // content changed
  2325.             contentUpdates.push({ indexI: i, indexJ: j })
  2326.             i++; j++;
  2327.           } else {
  2328.             let addedCount = 0;
  2329.             for (let q = j; q < nAfter; q++) {
  2330.               if (foundsForAfter[q] === false) addedCount++;
  2331.               else break;
  2332.             }
  2333.             let removedCount = 0;
  2334.             for (let q = i; q < nBefore; q++) {
  2335.               if (foundsForBefore[q] === false) removedCount++;
  2336.               else break;
  2337.             }
  2338.             if (!addedCount && !removedCount) {
  2339.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  2340.             }
  2341.             const entry = new IndexSpliceEntry(
  2342.               j,
  2343.               addedCount,
  2344.               removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  2345.             );
  2346.             indexSplices.push(entry);
  2347.             i += removedCount;
  2348.             j += addedCount;
  2349.           }
  2350.         }
  2351.         foundsForBefore = null;
  2352.         foundsForAfter = null;
  2353.         idsBefore = null;
  2354.         idsAfter = null;
  2355.         beforeParticipants = null;
  2356.         participantsForSpliceWR = indexSplices.length > 0 ? mWeakRef(participants) : null;
  2357.         participants = null;
  2358.         return { indexSplices, contentUpdates };
  2359.  
  2360.       }
  2361.  
  2362.       /*
  2363.  
  2364.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  2365.  
  2366.       VM63631:1 Error
  2367.       at customElements.get.notifyPath (<anonymous>:1:122)
  2368.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  2369.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  2370.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  2371.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  2372.       at ju (live_chat_polymer.js:1674:217)
  2373.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  2374.       at b._flushProperties (live_chat_polymer.js:1597:200)
  2375.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  2376.       at a.notifyPath (live_chat_polymer.js:1741:182)
  2377.  
  2378.       */
  2379.  
  2380.       function convertToIds(participants) {
  2381.         return participants.map(participant => {
  2382.           if (!participant || typeof participant !== 'object') {
  2383.             console.warn('Error(0xFA41): convertToIds', participant);
  2384.             return participant; // just in case
  2385.           }
  2386.           let keys = Object.keys(participant);
  2387.           // liveChatTextMessageRenderer
  2388.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  2389.           // liveChatPaidMessageRenderer
  2390.           /*
  2391.  
  2392.             'yt-live-chat-participant-renderer' utilizes the following:
  2393.             authorName.simpleText: string
  2394.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  2395.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  2396.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  2397.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  2398.  
  2399.           */
  2400.           if (keys.length !== 1) {
  2401.             console.warn('Error(0xFA42): convertToIds', participant);
  2402.             return participant; // just in case
  2403.           }
  2404.           let key = keys[0];
  2405.           let renderer = (participant[key] || 0);
  2406.           let authorName = (renderer.authorName || 0);
  2407.           let text = `${authorName.simpleText || authorName.text}`
  2408.           let res = participant; // fallback if it is not a vaild entry
  2409.           if (typeof text !== 'string') {
  2410.             console.warn('Error(0xFA53): convertToIds', participant);
  2411.           } else {
  2412.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  2413.             if (text.length > 1) res = text;
  2414.           }
  2415.           return res;
  2416.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  2417.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  2418.         });
  2419.       }
  2420.  
  2421.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  2422.         // just update when content is changed.
  2423.         if (p1.authorName !== p2.authorName) return true;
  2424.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  2425.         if (p1.authorBadges !== p2.authorBadges) return true;
  2426.         return false;
  2427.       } : (p1, p2) => {
  2428.         // keep integrity all the time.
  2429.         return p1 !== p2; // always true
  2430.       }
  2431.  
  2432.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  2433.  
  2434.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  2435.           if (path !== "participantsManager.participants") {
  2436.             return this.__notifyPath5036__.apply(this, arguments);
  2437.           }
  2438.           if (c95dm === r95dm) return;
  2439.         } else {
  2440.           const stack = new Error().stack;
  2441.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  2442.             return this.__notifyPath5036__.apply(this, arguments);
  2443.           }
  2444.         }
  2445.  
  2446.         if (uvid > 1e8) uvid = uvid % 100;
  2447.         let tid = ++uvid;
  2448.  
  2449.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  2450.         mutexParticipants.lockWith(lockResolve => {
  2451.  
  2452.           const participants00 = cnt.participantsManager.participants;
  2453.  
  2454.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  2455.             lockResolve();
  2456.             return;
  2457.           }
  2458.  
  2459.           let doUpdate = false;
  2460.  
  2461.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  2462.  
  2463.             if (!participants00.r94dm) {
  2464.               participants00.r94dm = 1;
  2465.               if (++r95dm > 1e9) r95dm = 9;
  2466.               participants00.push = function () {
  2467.                 if (++r95dm > 1e9) r95dm = 9;
  2468.                 return Array.prototype.push.apply(this, arguments);
  2469.               }
  2470.               participants00.pop = function () {
  2471.                 if (++r95dm > 1e9) r95dm = 9;
  2472.                 return Array.prototype.pop.apply(this, arguments);
  2473.               }
  2474.               participants00.shift = function () {
  2475.                 if (++r95dm > 1e9) r95dm = 9;
  2476.                 return Array.prototype.shift.apply(this, arguments);
  2477.               }
  2478.               participants00.unshift = function () {
  2479.                 if (++r95dm > 1e9) r95dm = 9;
  2480.                 return Array.prototype.unshift.apply(this, arguments);
  2481.               }
  2482.               participants00.splice = function () {
  2483.                 if (++r95dm > 1e9) r95dm = 9;
  2484.                 return Array.prototype.splice.apply(this, arguments);
  2485.               }
  2486.               participants00.sort = function () {
  2487.                 if (++r95dm > 1e9) r95dm = 9;
  2488.                 return Array.prototype.sort.apply(this, arguments);
  2489.               }
  2490.               participants00.reverse = function () {
  2491.                 if (++r95dm > 1e9) r95dm = 9;
  2492.                 return Array.prototype.reverse.apply(this, arguments);
  2493.               }
  2494.             }
  2495.  
  2496.             if (c95dm !== r95dm) {
  2497.               c95dm = r95dm;
  2498.               doUpdate = true;
  2499.             }
  2500.  
  2501.           } else {
  2502.             doUpdate = true;
  2503.           }
  2504.  
  2505.           if (!doUpdate) {
  2506.             lockResolve();
  2507.             return;
  2508.           }
  2509.  
  2510.           const participants = participants00.slice(0);
  2511.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  2512.           beforeParticipantsMap.set(cnt, participants);
  2513.  
  2514.           const resPromise = (async () => {
  2515.  
  2516.             if (beforeParticipants.length === 0) {
  2517.               // not error
  2518.               return 0;
  2519.             }
  2520.  
  2521.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  2522.  
  2523.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  2524.             if (beforeParticipants.length !== countOfElements) {
  2525.               // there is somewrong for the cache. - sometimes happen
  2526.               return 0;
  2527.             }
  2528.  
  2529.             const idsBefore = convertToIds(beforeParticipants);
  2530.             const idsAfter = convertToIds(participants);
  2531.  
  2532.             let { indexSplices, contentUpdates } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  2533.  
  2534.             let res = 1; // default 1 for no update
  2535.  
  2536.             if (indexSplices.length >= 1) {
  2537.  
  2538.  
  2539.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  2540.               // let p1 = indexSplices[0].removed;
  2541.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  2542.  
  2543.               /* folllow
  2544.                   a.notifyPath(c + ".splices", d);
  2545.                   a.notifyPath(c + ".length", b.length);
  2546.               */
  2547.               // stampDomArraySplices_
  2548.  
  2549.  
  2550.               await new Promise(resolve => {
  2551.                 cnt.resolveForDOMRendering781 = resolve;
  2552.  
  2553.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  2554.                   indexSplices
  2555.                 });
  2556.                 indexSplices = null;
  2557.                 participantsForSpliceWR = null;
  2558.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  2559.                   participants.length
  2560.                 );
  2561.  
  2562.               });
  2563.  
  2564.               // play safe for the change of 'length'
  2565.               if (typeof nextBrowserTick !== 'function') {
  2566.                 await Promise.resolve(0);
  2567.               } else {
  2568.                 await new Promise(resolve => nextBrowserTick(resolve)).then();
  2569.               }
  2570.  
  2571.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  2572.  
  2573.               const wrongSize = participants.length !== countOfElements
  2574.               if (wrongSize) {
  2575.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  2576.                 return 0;
  2577.               }
  2578.  
  2579.               res = 2 | 4;
  2580.  
  2581.             } else {
  2582.  
  2583.               indexSplices = null;
  2584.               participantsForSpliceWR = null;
  2585.  
  2586.               if (participants.length !== countOfElements) {
  2587.                 // other unhandled cases
  2588.                 return 0;
  2589.               }
  2590.  
  2591.             }
  2592.  
  2593.             // participants.length === countOfElements before contentUpdates
  2594.             if (contentUpdates.length >= 1) {
  2595.               for (const contentUpdate of contentUpdates) {
  2596.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  2597.                 if (isChanged) {
  2598.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  2599.                   res |= 4 | 8;
  2600.                 }
  2601.               }
  2602.             }
  2603.             contentUpdates = null;
  2604.  
  2605.             return res;
  2606.  
  2607.  
  2608.           })();
  2609.  
  2610.  
  2611.           resPromise.then(resValue => {
  2612.  
  2613.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  2614.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  2615.             if (resValue === 0) {
  2616.               new Promise(resolve => {
  2617.                 cnt.resolveForDOMRendering781 = resolve;
  2618.                 isLogRequired && console.log("Full Refresh begins");
  2619.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  2620.               }).then(() => {
  2621.                 isLogRequired && console.log("Full Refresh ends");
  2622.                 console.groupEnd();
  2623.               }).then(lockResolve);
  2624.               return;
  2625.             }
  2626.  
  2627.             const delayLockResolve = (resValue & 4) === 4;
  2628.  
  2629.             if (delayLockResolve) {
  2630.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  2631.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  2632.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  2633.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  2634.               isLogRequired && console.groupEnd();
  2635.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2636.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2637.               requestAnimationFrame(lockResolve);
  2638.             } else {
  2639.               lockResolve();
  2640.             }
  2641.  
  2642.           });
  2643.  
  2644.         });
  2645.  
  2646.       }
  2647.  
  2648.       return { notifyPath7081 };
  2649.  
  2650.     })();
  2651.  
  2652.     const whenDefinedMultiple = async (tags) => {
  2653.  
  2654.       const sTags = [...new Set(tags)];
  2655.       const len = sTags.length;
  2656.  
  2657.       const pTags = new Array(len);
  2658.       for (let i = 0; i < len; i++) {
  2659.         pTags[i] = customElements.whenDefined(sTags[i]);
  2660.       }
  2661.  
  2662.       await Promise.all(pTags);
  2663.       pTags.length = 0;
  2664.  
  2665.       return sTags;
  2666.  
  2667.     }
  2668.  
  2669.     const onRegistryReadyForDataManipulation = () => {
  2670.  
  2671.       function dummy5035(a, b, c) { }
  2672.       function dummy411(a, b, c) { }
  2673.  
  2674.  
  2675.  
  2676.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2677.  
  2678.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2679.  
  2680.         const tag = "yt-live-chat-participant-list-renderer";
  2681.         const cProto = getProto(document.createElement(tag));
  2682.         if (!cProto || typeof cProto.attached !== 'function') {
  2683.           // for _registered, proto.attached shall exist when the element is defined.
  2684.           // for controller extraction, attached shall exist when instance creates.
  2685.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2686.           return;
  2687.         }
  2688.  
  2689.  
  2690.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2691.  
  2692.         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'];
  2693.         const fgs = {};
  2694.         for (const key of fgsArr) fgs[key] = undefined;
  2695.  
  2696.         try {
  2697.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2698.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2699.         } catch (e) { }
  2700.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2701.  
  2702.         const canDoReplacement = (() => {
  2703.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2704.             console.warn('YouTube Live Chat Tamer is running.');
  2705.             return;
  2706.           }
  2707.  
  2708.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2709.             console.warn('YouTube Live Chat Tamer is running.');
  2710.             return;
  2711.           }
  2712.  
  2713.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2714.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2715.  
  2716.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2717.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2718.             return;
  2719.           }
  2720.  
  2721.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2722.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2723.             return;
  2724.           }
  2725.  
  2726.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2727.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2728.             return;
  2729.           }
  2730.           return true;
  2731.         })();
  2732.  
  2733.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2734.  
  2735.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2736.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2737.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2738.           const s = fiRSCB.split('.');
  2739.           // Feb 2024: 0.403.247 => NG
  2740.           // if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2741.           //   console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2742.           // } else {
  2743.           //   console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2744.           // }
  2745.           console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ###`);
  2746.         } else {
  2747.           console.log("flushRenderStamperComponentBindings_ - not found");
  2748.         }
  2749.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2750.  
  2751.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2752.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2753.           cProto.flushRenderStamperComponentBindings_ = function () {
  2754.             // console.log('flushRenderStamperComponentBindings_')
  2755.             this.flushRenderStamperComponentBindings66_();
  2756.             if (this.resolveForDOMRendering781) {
  2757.               this.resolveForDOMRendering781();
  2758.               this.resolveForDOMRendering781 = null;
  2759.             }
  2760.           };
  2761.         }
  2762.  
  2763.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2764.           const container = ((this || 0).$ || 0).participants;
  2765.           if (!container) return 0;
  2766.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2767.         }
  2768.  
  2769.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2770.  
  2771.         cProto.__attached412__ = cProto.attached;
  2772.         const fpPList = function (hostElement) {
  2773.           const cnt = insp(hostElement);
  2774.           if (beforeParticipantsMap.has(cnt)) return;
  2775.           hostElement.classList.add('n9fJ3');
  2776.  
  2777.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2778.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2779.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2780.             return;
  2781.           }
  2782.  
  2783.           groupCollapsed("Participant List attached", "");
  2784.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2785.           //   console.log(123, 'appendChild');
  2786.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2787.           // }
  2788.  
  2789.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2790.           //   console.log(123, 'insertBefore');
  2791.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2792.           // }
  2793.  
  2794.           cnt.__notifyPath5036__ = cnt.notifyPath
  2795.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2796.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2797.           console.log(`initial number of participants: ${participants.length}`);
  2798.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2799.           beforeParticipantsMap.set(cnt, newParticipants);
  2800.           cnt.notifyPath = notifyPath7081;
  2801.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2802.           console.groupEnd();
  2803.         }
  2804.         cProto.attached = function () {
  2805.           fpPList(this.hostElement || this);
  2806.           this.__attached412__.apply(this, arguments);
  2807.         };
  2808.  
  2809.  
  2810.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2811.  
  2812.           /** @type {boolean | (()=>boolean)} */
  2813.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2814.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2815.  
  2816.             let lastMessageDate = 0;
  2817.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2818.  
  2819.             cProto.stampDomArray_ = function (...args) {
  2820.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2821.                 if (typeof toUseMaintainStableList === 'function') {
  2822.                   toUseMaintainStableList = toUseMaintainStableList();
  2823.                 }
  2824.                 args[5] = toUseMaintainStableList;
  2825.                 let currentDate = Date.now();
  2826.                 if (currentDate - lastMessageDate > 440) {
  2827.                   lastMessageDate = currentDate;
  2828.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2829.                 }
  2830.               }
  2831.               return this.stampDomArray66_.apply(this, args);
  2832.             }
  2833.  
  2834.             cProto.stampDomArray_.nIegT = 1;
  2835.  
  2836.           }
  2837.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2838.         } else {
  2839.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2840.         }
  2841.  
  2842.         console.groupEnd();
  2843.  
  2844.         if (onPageElements.length >= 1) {
  2845.           for (const s of onPageElements) {
  2846.             if (insp(s).isAttached === true) {
  2847.               fpPList(s);
  2848.             }
  2849.           }
  2850.         }
  2851.  
  2852.       }).catch(console.warn);
  2853.  
  2854.     };
  2855.  
  2856.     if (DO_PARTICIPANT_LIST_HACKS) {
  2857.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2858.     }
  2859.  
  2860.  
  2861.  
  2862.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2863.  
  2864.  
  2865.     const fixChildrenIssue = !!fixChildrenIssue801;
  2866.     if (fixChildrenIssue && typeof Object.getOwnPropertyDescriptor === 'function' && typeof Proxy !== 'undefined') {
  2867.       const divProto = HTMLDivElement.prototype;
  2868.       const polymerControllerSetData3 = function (c, d, e) {
  2869.         return insp(this).set(c, d, e);
  2870.       }
  2871.       const polymerControllerSetData2 = function (c, d) {
  2872.         return insp(this).set(c, d);
  2873.       }
  2874.       const dummyFn = function () {
  2875.         console.log('dummyFn', ...arguments);
  2876.       };
  2877.  
  2878.       const wm44 = new Map();
  2879.       function unPolymerSet(elem) {
  2880.         const is = elem.is;
  2881.         if (is && !elem.set) {
  2882.           let rt = wm44.get(is);
  2883.           if (!rt) {
  2884.             rt = 1;
  2885.             const cnt = insp(elem);
  2886.             if (cnt !== elem && cnt && typeof cnt.set === 'function') {
  2887.               const pcSet = cnt.constructor.prototype.set;
  2888.               if (pcSet && typeof pcSet === 'function' && pcSet.length === 3) {
  2889.                 rt = polymerControllerSetData3;
  2890.               } else if (pcSet && typeof pcSet === 'function' && pcSet.length === 2) {
  2891.                 rt = polymerControllerSetData2;
  2892.               }
  2893.             }
  2894.             wm44.set(is, rt);
  2895.           }
  2896.           if (typeof rt === 'function') {
  2897.             elem.set = rt;
  2898.           } else {
  2899.             elem.set = dummyFn;
  2900.           }
  2901.         }
  2902.       }
  2903.       if (!divProto.__children577__ && !divProto.__children578__) {
  2904.  
  2905.         const dp = Object.getOwnPropertyDescriptor(Element.prototype, 'children');
  2906.         const dp2 = Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'children');
  2907.         const dp3 = Object.getOwnPropertyDescriptor(divProto, 'children');
  2908.  
  2909.         if (dp && dp.configurable === true && dp.enumerable === true && typeof dp.get === 'function' && !dp2 && !dp3) {
  2910.  
  2911.           if (divProto instanceof HTMLElement && divProto instanceof Element) {
  2912.  
  2913.             let m = Object.assign({}, dp);
  2914.             divProto.__children577__ = dp.get;
  2915.             divProto.__children578__ = function () {
  2916.               if (this.__children803__) return this.__children803__;
  2917.               if (this.__children801__) {
  2918.                 let arr = [];
  2919.                 for (let elem = this.firstElementChild; elem !== null; elem = elem.nextElementSibling) {
  2920.                   if (elem.is) {
  2921.                     unPolymerSet(elem);
  2922.                     arr.push(elem);
  2923.                   }
  2924.                 }
  2925.                 if (this.__children801__ === 2) this.__children803__ = arr;
  2926.                 return arr;
  2927.               }
  2928.               return 577;
  2929.             };
  2930.             m.get = function () {
  2931.               const r = this.__children578__();
  2932.               if (r !== 577) return r;
  2933.               return this.__children577__();
  2934.             };
  2935.             Object.defineProperty(divProto, 'children', m);
  2936.  
  2937.             console.log('fixChildrenIssue - set OK')
  2938.  
  2939.           }
  2940.         }
  2941.  
  2942.       }
  2943.  
  2944.  
  2945.     }
  2946.  
  2947.  
  2948.     const bnForDelayChatOccurrence = () => {
  2949.  
  2950.       document.addEventListener('animationstart', (evt) => {
  2951.  
  2952.         if (evt.animationName === 'dontRenderAnimation') {
  2953.           evt.target.classList.remove('dont-render');
  2954.           if (scrollChatFn) scrollChatFn();
  2955.         }
  2956.  
  2957.       }, true);
  2958.  
  2959.       const f = (elm) => {
  2960.         if (elm && elm.nodeType === 1) {
  2961.           if (!skipDontRender && allowDontRender === true) {
  2962.             // innerTextFixFn();
  2963.             elm.classList.add('dont-render');
  2964.           }
  2965.         }
  2966.       }
  2967.  
  2968.       Node.prototype.__appendChild931__ = function (a) {
  2969.         a = dr(a);
  2970.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2971.           if (a && a.nodeType === 1) f(a);
  2972.           else if (a instanceof DocumentFragment) {
  2973.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2974.               f(n);
  2975.             }
  2976.           }
  2977.         }
  2978.       }
  2979.  
  2980.       Node.prototype.__appendChild932__ = function () {
  2981.         this.__appendChild931__.apply(this, arguments);
  2982.         return Node.prototype.appendChild.apply(this, arguments);
  2983.       }
  2984.  
  2985.  
  2986.     };
  2987.  
  2988.     const watchUserCSS = () => {
  2989.  
  2990.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2991.  
  2992.       const getElemFromWR = (nr) => {
  2993.         const n = kRef(nr);
  2994.         if (n && n.isConnected) return n;
  2995.         return null;
  2996.       }
  2997.  
  2998.       const clearContentVisibilitySizing = () => {
  2999.         Promise.resolve().then(() => {
  3000.  
  3001.           const e = document.querySelector('#show-more[disabled]');
  3002.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  3003.  
  3004.           let lastVisibleItemWR = null;
  3005.           for (const elm of document.querySelectorAll('[wSr93]')) {
  3006.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  3007.             elm.setAttribute('wSr93', '');
  3008.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  3009.           }
  3010.           foregroundPromiseFn().then(() => {
  3011.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  3012.             if (btnShowMore) btnShowMore.click();
  3013.             else {
  3014.               // would not work if switch it frequently
  3015.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  3016.               if (lastVisibleItem) {
  3017.  
  3018.                 Promise.resolve()
  3019.                   .then(() => lastVisibleItem.scrollIntoView())
  3020.                   .then(() => lastVisibleItem.scrollIntoView(false))
  3021.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  3022.                   .catch(e => { }) // break the chain when method not callable
  3023.  
  3024.               }
  3025.             }
  3026.           });
  3027.  
  3028.         });
  3029.  
  3030.       }
  3031.  
  3032.       const mutObserver = new MutationObserver((mutations) => {
  3033.         for (const mutation of mutations) {
  3034.           if ((mutation.addedNodes || 0).length >= 1) {
  3035.             for (const addedNode of mutation.addedNodes) {
  3036.               if (addedNode.nodeName === 'STYLE') {
  3037.                 clearContentVisibilitySizing();
  3038.                 return;
  3039.               }
  3040.             }
  3041.           }
  3042.           if ((mutation.removedNodes || 0).length >= 1) {
  3043.             for (const removedNode of mutation.removedNodes) {
  3044.               if (removedNode.nodeName === 'STYLE') {
  3045.                 clearContentVisibilitySizing();
  3046.                 return;
  3047.               }
  3048.             }
  3049.           }
  3050.         }
  3051.       });
  3052.  
  3053.       mutObserver.observe(document.documentElement, {
  3054.         childList: true,
  3055.         subtree: false
  3056.       });
  3057.       mutObserver.observe(document.head, {
  3058.         childList: true,
  3059.         subtree: false
  3060.       });
  3061.       mutObserver.observe(document.body, {
  3062.         childList: true,
  3063.         subtree: false
  3064.       });
  3065.  
  3066.     }
  3067.  
  3068.  
  3069.     class WillChangeController {
  3070.       constructor(itemScroller, willChangeValue) {
  3071.         this.element = itemScroller;
  3072.         this.counter = 0;
  3073.         this.active = false;
  3074.         this.willChangeValue = willChangeValue;
  3075.       }
  3076.  
  3077.       beforeOper() {
  3078.         if (!this.active) {
  3079.           this.active = true;
  3080.           this.element.style.willChange = this.willChangeValue;
  3081.         }
  3082.         this.counter++;
  3083.       }
  3084.  
  3085.       afterOper() {
  3086.         const c = this.counter;
  3087.         foregroundPromiseFn().then(() => {
  3088.           if (c === this.counter) {
  3089.             this.active = false;
  3090.             this.element.style.willChange = '';
  3091.           }
  3092.         });
  3093.       }
  3094.  
  3095.       release() {
  3096.         const element = this.element;
  3097.         this.element = null;
  3098.         this.counter = 1e16;
  3099.         this.active = false;
  3100.         try {
  3101.           element.style.willChange = '';
  3102.         } catch (e) { }
  3103.       }
  3104.  
  3105.     }
  3106.  
  3107.  
  3108.     const skzData = (skz) => skz.data = {
  3109.       "message": {
  3110.         "runs": [
  3111.           {
  3112.             "text": "em2o"
  3113.           },
  3114.           {
  3115.             "emoji": {
  3116.               "emojiId": "cm35z",
  3117.               "shortcuts": [
  3118.                 ":_s:",
  3119.                 ":s:"
  3120.               ],
  3121.               "searchTerms": [
  3122.                 "_s",
  3123.                 "s"
  3124.               ],
  3125.               "image": {
  3126.                 "thumbnails": [
  3127.                   {
  3128.                     "url": dummyImgURL,
  3129.                     "width": 48,
  3130.                     "height": 48
  3131.                   }
  3132.                 ],
  3133.                 "accessibility": {
  3134.                   "accessibilityData": {
  3135.                     "label": "s"
  3136.                   }
  3137.                 }
  3138.               },
  3139.               "isCustomEmoji": true
  3140.             }
  3141.           },
  3142.           {
  3143.             "text": "ji"
  3144.           }
  3145.         ]
  3146.       },
  3147.       "authorName": {
  3148.         "simpleText": "N"
  3149.       },
  3150.       "authorPhoto": {
  3151.         "thumbnails": [
  3152.           {
  3153.             "url": dummyImgURL,
  3154.             "width": 64,
  3155.             "height": 64
  3156.           }
  3157.         ]
  3158.       },
  3159.       "contextMenuEndpoint": {
  3160.         "commandMetadata": {
  3161.           "webCommandMetadata": {
  3162.             "ignoreNavigation": true
  3163.           }
  3164.         },
  3165.         "liveChatItemContextMenuEndpoint": {
  3166.           "params": "123=="
  3167.         }
  3168.       },
  3169.       "id": "sk35z",
  3170.       "timestampUsec": "1232302352350000",
  3171.       "authorBadges": [
  3172.         {
  3173.           "liveChatAuthorBadgeRenderer": {
  3174.             "customThumbnail": {
  3175.               "thumbnails": [
  3176.                 {
  3177.                   "url": dummyImgURL,
  3178.                   "width": 16,
  3179.                   "height": 16
  3180.                 },
  3181.                 {
  3182.                   "url": dummyImgURL,
  3183.                   "width": 32,
  3184.                   "height": 32
  3185.                 }
  3186.               ]
  3187.             },
  3188.             "tooltip": "T",
  3189.             "accessibility": {
  3190.               "accessibilityData": {
  3191.                 "label": "E"
  3192.               }
  3193.             }
  3194.           }
  3195.         }
  3196.       ],
  3197.       "authorExternalChannelId": "A",
  3198.       "contextMenuAccessibility": {
  3199.         "accessibilityData": {
  3200.           "label": "E"
  3201.         }
  3202.       },
  3203.       "timestampText": {
  3204.         "simpleText": "0:43"
  3205.       }
  3206.     };
  3207.  
  3208.  
  3209.  
  3210.     const { lcRendererElm, visObserver } = (() => {
  3211.  
  3212.  
  3213.  
  3214.       let lcRendererWR = null;
  3215.  
  3216.       const lcRendererElm = () => {
  3217.         let lcRenderer = kRef(lcRendererWR);
  3218.         if (!lcRenderer || !lcRenderer.isConnected) {
  3219.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  3220.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  3221.         }
  3222.         return lcRenderer;
  3223.       };
  3224.  
  3225.  
  3226.       let hasFirstShowMore = false;
  3227.  
  3228.       const visObserverFn = (entry) => {
  3229.  
  3230.         const target = entry.target;
  3231.         if (!target) return;
  3232.         // if(target.classList.contains('dont-render')) return;
  3233.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  3234.         // const h = entry.boundingClientRect.height;
  3235.         /*
  3236.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  3237.             // e.g. under fullscreen. the element created but not rendered.
  3238.             target.setAttribute('wSr93', '');
  3239.             return;
  3240.         }
  3241.         */
  3242.         if (isVisible) {
  3243.           // target.style.setProperty('--wsr94', h + 'px');
  3244.           target.setAttribute('wSr93', 'visible');
  3245.           if (nNextElem(target) === null) {
  3246.  
  3247.             // firstVisibleItemDetected = true;
  3248.             /*
  3249.               if (dateNow() - lastScroll < 80) {
  3250.                   lastLShow = 0;
  3251.                   lastScroll = 0;
  3252.                   Promise.resolve().then(clickShowMore);
  3253.               } else {
  3254.                   lastLShow = dateNow();
  3255.               }
  3256.               */
  3257.             // lastLShow = dateNow();
  3258.           } else if (!hasFirstShowMore) { // should more than one item being visible
  3259.             // implement inside visObserver to ensure there is sufficient delay
  3260.             hasFirstShowMore = true;
  3261.             foregroundPromiseFn().then(() => {
  3262.               // foreground page
  3263.               // page visibly ready -> load the latest comments at initial loading
  3264.               const lcRenderer = lcRendererElm();
  3265.               if (lcRenderer) {
  3266.                 if (typeof nextBrowserTick !== 'function') {
  3267.                   insp(lcRenderer).scrollToBottom_();
  3268.                 } else {
  3269.                   nextBrowserTick(() => {
  3270.                     const cnt = insp(lcRenderer);
  3271.                     if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3272.                     cnt.scrollToBottom_();
  3273.                   });
  3274.                 }
  3275.               }
  3276.             });
  3277.           }
  3278.         }
  3279.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  3280.  
  3281.           // target.style.setProperty('--wsr94', h + 'px');
  3282.           target.setAttribute('wSr93', 'hidden');
  3283.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  3284.  
  3285.       }
  3286.  
  3287.  
  3288.  
  3289.       const visObserver = new IntersectionObserver((entries) => {
  3290.  
  3291.         for (const entry of entries) {
  3292.  
  3293.           Promise.resolve(entry).then(visObserverFn);
  3294.  
  3295.         }
  3296.  
  3297.       }, {
  3298.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  3299.         rootMargin: "0px",
  3300.         threshold: [0.05, 0.95],
  3301.       });
  3302.  
  3303.  
  3304.       return { lcRendererElm, visObserver }
  3305.  
  3306.  
  3307.     })();
  3308.  
  3309.     const { setupMutObserver } = (() => {
  3310.  
  3311.       async function asyncTickerBackgroundOverridedChecker() {
  3312.  
  3313.         try {
  3314.           await promiseForCustomYtElementsReady.then();
  3315.           await customElements.whenDefined('yt-live-chat-text-message-renderer');
  3316.           await new Promise(r => setTimeout(r, 800));
  3317.  
  3318.           if (!hasTimerModified) return;
  3319.           const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  3320.           if (!tickerRenderer) return;
  3321.  
  3322.           const tickerRendererDollar = indr(tickerRenderer);
  3323.           const items = (tickerRendererDollar || 0).items || 0;
  3324.           if (!items) return;
  3325.           const template = document.createElement('template');
  3326.           template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  3327.             modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  3328.             dimmed="" [dummy777]>
  3329.             <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  3330.               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));">
  3331.               <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  3332.                 <yt-img-shadow777 id="author-photo" height="24" width="24"
  3333.                   class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  3334.                   style="background-color: transparent;" loaded=""><img id="img"
  3335.                     draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  3336.                     src="${dummyImgURL}"></yt-img-shadow777>
  3337.  
  3338.                 <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  3339.               </div>
  3340.             </div>
  3341.           </yt-live-chat-ticker-dummy777-item-renderer>`;
  3342.           const dummy777 = template.content.firstElementChild;
  3343.           await Promise.resolve().then();
  3344.           let res = 0;
  3345.           if (items instanceof HTMLElement && items.isConnected === true) {
  3346.             try {
  3347.               items.appendChild(dummy777);
  3348.               let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  3349.               if (container.isConnected === true) {
  3350.                 const evaluated = `${getComputedStyleCached(container).background}`;
  3351.                 container = null;
  3352.                 res = evaluated.indexOf('0.') < 4 ? 1 : 2;
  3353.               }
  3354.             } catch (e) { console.warn(e) }
  3355.             HTMLElement.prototype.remove.call(dummy777);
  3356.           }
  3357.           await Promise.resolve().then();
  3358.           dummy777.textContent = '';
  3359.           if (res === 1) {
  3360.             // not fulfilling
  3361.             // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3362.             console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3363.               "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3364.               "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3365.             );
  3366.             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');
  3367.             console.groupEnd();
  3368.             console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  3369.           } else if (res === 2) {
  3370.             console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3371.           }
  3372.         } catch (e) {
  3373.           console.warn(e);
  3374.         }
  3375.       }
  3376.  
  3377.       async function asyncDelayChatOccurrence(m2) {
  3378.         try {
  3379.           await promiseForCustomYtElementsReady.then();
  3380.           await customElements.whenDefined('yt-live-chat-text-message-renderer');
  3381.           await new Promise(r => setTimeout(r, 1));
  3382.           const dummy888 = document.createElement('yt-live-chat-text-message-renderer');
  3383.           // const template = document.createElement('template');
  3384.           // template.innerHTML = "<yt-live-chat-text-message-renderer></yt-live-chat-text-message-renderer>"
  3385.           // const dummy888 = template.content.firstElementChild;
  3386.           const skzCnt = insp(dummy888);
  3387.           if (!(skzCnt && 'data' in skzCnt && 'attached' in skzCnt)) {
  3388.             return;
  3389.           }
  3390.           if (!skzCnt.hostElement) skzCnt.hostElement = dummy888;
  3391.           /** @type {HTMLTemplateElement} */
  3392.           const skzElem = dummy888;
  3393.           let cz1 = null;
  3394.           const deferredZy1 = new Promise(resolve => {
  3395.             skzCnt.attached = function () {
  3396.               cz1 = HTMLElement.prototype.querySelector.call(skzElem, '#message img') !== null;
  3397.               resolve(skzElem.textContent);
  3398.             }
  3399.             skzCnt.detached = function () {
  3400.             }
  3401.           });
  3402.           skzElem.id = 'sk35z';
  3403.           skzData(skzCnt);
  3404.           sk35zResolveFn = null;
  3405.           const deferredMutation = new Promise(resolve => {
  3406.             sk35zResolveFn = resolve;
  3407.             HTMLElement.prototype.appendChild.call(m2, skzElem);
  3408.           });
  3409.           const [zy1, _] = await Promise.all([deferredZy1, deferredMutation]);
  3410.           skzCnt.attached = function () { };
  3411.           function fn() {
  3412.             const zy2 = skzElem.textContent;
  3413.             const cz2 = HTMLElement.prototype.querySelector.call(skzElem, '#message img') !== null;
  3414.             if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  3415.               allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  3416.             }
  3417.             if (allowDontRender === true) return true;
  3418.             if (allowDontRender === false) {
  3419.               console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3420.                 "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3421.                 "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3422.               );
  3423.               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');
  3424.               console.groupEnd();
  3425.             }
  3426.           }
  3427.           await new Promise(r => setTimeout(r, 1));
  3428.           if (!fn()) return;
  3429.           await foregroundPromiseFn().then();
  3430.           if (!fn()) return;
  3431.           skzElem.remove();
  3432.           await Promise.resolve().then();
  3433.           skzElem.textContent = '';
  3434.           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3435.         } catch (e) {
  3436.           console.warn(e);
  3437.         }
  3438.       }
  3439.  
  3440.       const mutFn = (items) => {
  3441.         let seqIndex = -1;
  3442.         const elementSet = new Set();
  3443.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  3444.           if (node.hasAttribute('wSr93')) {
  3445.             seqIndex = parseInt(node.getAttribute('yt-chat-item-seq'), 10);
  3446.             break;
  3447.           }
  3448.           node.setAttribute('wSr93', '');
  3449.           visObserver.observe(node);
  3450.           elementSet.add(node);
  3451.         }
  3452.         let iter = elementSet.values();
  3453.         let i = seqIndex + elementSet.size;
  3454.         for (let curr; curr = iter.next().value;) {
  3455.           curr.setAttribute('yt-chat-item-seq', i % 60);
  3456.           curr.classList.add('yt-chat-item-' + ((i % 2) ? 'odd' : 'even'));
  3457.           i--;
  3458.         }
  3459.         iter = null;
  3460.         elementSet.clear();
  3461.       }
  3462.  
  3463.       const mutObserver = new MutationObserver((mutations) => {
  3464.         const items = (mutations[0] || 0).target;
  3465.         if (!items) return;
  3466.         if (sk35zResolveFn) {
  3467.           sk35zResolveFn();
  3468.           sk35zResolveFn = null;
  3469.         }
  3470.         mutFn(items);
  3471.       });
  3472.  
  3473.       const setupMutObserver = (m2) => {
  3474.         scrollChatFn = null;
  3475.         mutObserver.disconnect();
  3476.         mutObserver.takeRecords();
  3477.         if (m2) {
  3478.           if (typeof m2.__appendChild932__ === 'function') {
  3479.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  3480.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  3481.           }
  3482.           mutObserver.observe(m2, {
  3483.             childList: true,
  3484.             subtree: false
  3485.           });
  3486.           mutFn(m2);
  3487.  
  3488.           const isFirstList = firstList;
  3489.           firstList = false;
  3490.  
  3491.           if (ENABLE_OVERFLOW_ANCHOR) {
  3492.  
  3493.             let items = m2;
  3494.             let addedAnchor = false;
  3495.             if (items) {
  3496.               if (items.nextElementSibling === null) {
  3497.                 items.classList.add('no-anchor');
  3498.                 addedAnchor = true;
  3499.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  3500.               }
  3501.             }
  3502.  
  3503.  
  3504.  
  3505.             if (addedAnchor) {
  3506.               nodeParent(m2).classList.add('no-anchor'); // required
  3507.             }
  3508.  
  3509.           }
  3510.  
  3511.  
  3512.  
  3513.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  3514.  
  3515.             (() => {
  3516.  
  3517.               const tag = 'yt-iframed-player-events-relay'
  3518.               const dummy = document.createElement(tag);
  3519.  
  3520.               const cProto = getProto(dummy);
  3521.               if (!cProto || !cProto.handlePostMessage_) {
  3522.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  3523.                 return;
  3524.               }
  3525.  
  3526.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  3527.  
  3528.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  3529.  
  3530.                 cProto.handlePostMessage67_ = function (a) {
  3531.  
  3532.                   const da = a.data;
  3533.  
  3534.  
  3535.  
  3536.                   playEventsStack = playEventsStack.then(() => {
  3537.  
  3538.  
  3539.  
  3540.                     if ('yt-player-state-change' in da) {
  3541.  
  3542.                       const qc = da['yt-player-state-change'];
  3543.  
  3544.  
  3545.                       let isQcChanged = false;
  3546.  
  3547.                       if (qc === 2) { isQcChanged = qc !== _playerState; _playerState = 2; relayCount = 0; } // paused
  3548.                       else if (qc === 3) { isQcChanged = qc !== _playerState; _playerState = 3; } // playing
  3549.                       else if (qc === 1) { isQcChanged = qc !== _playerState; _playerState = 1; } // playing
  3550.  
  3551.  
  3552.                       if ((isQcChanged) && playerState !== _playerState) {
  3553.                         playerEventsByIframeRelay = true;
  3554.                         onPlayStateChangePromise = new Promise((resolve) => {
  3555.                           let k = _playerState;
  3556.                           foregroundPromiseFn().then(() => {
  3557.                             if (k === _playerState && playerState !== _playerState) playerState = _playerState;
  3558.                             onPlayStateChangePromise = null;
  3559.                             resolve();
  3560.                           })
  3561.                         }).catch(console.warn);
  3562.  
  3563.                       }
  3564.  
  3565.                     } else if ('yt-player-video-progress' in da) {
  3566.                       const vp = da['yt-player-video-progress'];
  3567.  
  3568.  
  3569.                       relayCount++;
  3570.                       lastPlayerProgress = vp > 0 ? vp : 0;
  3571.  
  3572.  
  3573.                       if (relayPromise && vp > 0 && relayCount >= 2) {
  3574.                         if (onPlayStateChangePromise) {
  3575.                           onPlayStateChangePromise.then(() => {
  3576.                             relayPromise && relayPromise.resolve();
  3577.                             relayPromise = null;
  3578.                           })
  3579.                         } else {
  3580.                           relayPromise.resolve();
  3581.                           relayPromise = null;
  3582.                         }
  3583.                       }
  3584.  
  3585.                     }
  3586.  
  3587.                     return this.handlePostMessage66_(a);
  3588.  
  3589.                   }).catch(console.warn);
  3590.  
  3591.                 }
  3592.  
  3593.                 cProto.handlePostMessage_ = function (a) {
  3594.  
  3595.                   const da = (a || 0).data || 0;
  3596.  
  3597.                   if (typeof da !== 'object') return;
  3598.  
  3599.                   if (waitForInitialDataCompletion === 1) return;
  3600.  
  3601.                   if (!isPlayProgressTriggered) {
  3602.                     isPlayProgressTriggered = true;
  3603.  
  3604.                     if ('yt-player-video-progress' in da) {
  3605.                       waitForInitialDataCompletion = 1;
  3606.  
  3607.                       const wrapWith = (data) => {
  3608.                         const { origin } = a;
  3609.                         return {
  3610.                           origin,
  3611.                           data
  3612.                         };
  3613.                       }
  3614.  
  3615.                       this.handlePostMessage67_(wrapWith({
  3616.                         "yt-iframed-parent-ready": true
  3617.                       }));
  3618.  
  3619.                       playEventsStack = playEventsStack.then(() => {
  3620.  
  3621.                         const lcr = document.querySelector('yt-live-chat-renderer');
  3622.                         const psc = document.querySelector("yt-player-seek-continuation");
  3623.                         if (lcr && psc && lcr.replayBuffer_) {
  3624.  
  3625.                           const rbProgress = lcr.replayBuffer_.lastVideoOffsetTimeMsec;
  3626.                           const daProgress = da['yt-player-video-progress'] * 1000
  3627.                           // document.querySelector('yt-live-chat-renderer').playerProgressChanged_(1e-5);
  3628.  
  3629.                           const front_ = (lcr.replayBuffer_.replayQueue || 0).front_;
  3630.                           const back_ = (lcr.replayBuffer_.replayQueue || 0).back_;
  3631.  
  3632.                           // console.log(deepCopy( front_))
  3633.                           // console.log(deepCopy( back_))
  3634.                           // console.log(rbProgress, daProgress, )
  3635.                           if (front_ && back_ && rbProgress > daProgress && back_.length > 2 && back_.some(e => e && +e.videoOffsetTimeMsec > daProgress) && back_.some(e => e && +e.videoOffsetTimeMsec < daProgress)) {
  3636.                             // no action
  3637.                             // console.log('ss1')
  3638.                           } else if (rbProgress < daProgress + 3400 && rbProgress > daProgress - 1200) {
  3639.                             //  daProgress - 1200 < rbProgress < daProgress + 3400
  3640.                             // console.log('ss2')
  3641.                           } else {
  3642.  
  3643.                             lcr.previousProgressSec = 1E-5;
  3644.                             // lcr._setIsSeeking(!0),
  3645.                             lcr.replayBuffer_.clear()
  3646.                             psc.fireSeekContinuation_(da['yt-player-video-progress']);
  3647.                           }
  3648.  
  3649.                         }
  3650.  
  3651.                         waitForInitialDataCompletion = 2;
  3652.  
  3653.                         this.handlePostMessage_(a);
  3654.  
  3655.                       }).catch(console.warn);
  3656.  
  3657.                       return;
  3658.  
  3659.                     }
  3660.  
  3661.                   }
  3662.  
  3663.  
  3664.  
  3665.                   this.handlePostMessage67_(a);
  3666.  
  3667.  
  3668.  
  3669.                 }
  3670.  
  3671.               }
  3672.  
  3673.  
  3674.             })();
  3675.  
  3676.           }
  3677.  
  3678.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  3679.             asyncTickerBackgroundOverridedChecker();
  3680.           }
  3681.  
  3682.         }
  3683.       }
  3684.  
  3685.       return { setupMutObserver };
  3686.  
  3687.  
  3688.  
  3689.     })();
  3690.  
  3691.     const setupEvents = () => {
  3692.  
  3693.  
  3694.       let scrollCount = 0;
  3695.  
  3696.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  3697.  
  3698.  
  3699.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  3700.  
  3701.         const lcRenderer = lcRendererElm();
  3702.         if (lcRenderer) {
  3703.           const cnt = insp(lcRenderer);
  3704.           if (!cnt.hasUserJustInteracted11_) return;
  3705.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  3706.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  3707.           }
  3708.         }
  3709.  
  3710.       }
  3711.  
  3712.       document.addEventListener('scroll', (evt) => {
  3713.         if (!evt || !evt.isTrusted) return;
  3714.         // lastScroll = dateNow();
  3715.         if (++scrollCount > 1e9) scrollCount = 9;
  3716.       }, passiveCapture); // support contain => support passive
  3717.  
  3718.       let lastScrollCount = -1;
  3719.       document.addEventListener('wheel', (evt) => {
  3720.         if (!evt || !evt.isTrusted) return;
  3721.         if (lastScrollCount === scrollCount) return;
  3722.         lastScrollCount = scrollCount;
  3723.         lastWheel = dateNow();
  3724.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3725.       }, passiveCapture); // support contain => support passive
  3726.  
  3727.       document.addEventListener('mousedown', (evt) => {
  3728.         if (!evt || !evt.isTrusted) return;
  3729.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3730.         lastMouseDown = dateNow();
  3731.         currentMouseDown = true;
  3732.         lastUserInteraction = lastMouseDown;
  3733.       }, passiveCapture);
  3734.  
  3735.       document.addEventListener('pointerdown', (evt) => {
  3736.         if (!evt || !evt.isTrusted) return;
  3737.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3738.         lastMouseDown = dateNow();
  3739.         currentMouseDown = true;
  3740.         lastUserInteraction = lastMouseDown;
  3741.       }, passiveCapture);
  3742.  
  3743.       document.addEventListener('click', (evt) => {
  3744.         if (!evt || !evt.isTrusted) return;
  3745.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3746.         lastMouseDown = lastMouseUp = dateNow();
  3747.         currentMouseDown = false;
  3748.         lastUserInteraction = lastMouseDown;
  3749.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3750.       }, passiveCapture);
  3751.  
  3752.       document.addEventListener('tap', (evt) => {
  3753.         if (!evt || !evt.isTrusted) return;
  3754.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3755.         lastMouseDown = lastMouseUp = dateNow();
  3756.         currentMouseDown = false;
  3757.         lastUserInteraction = lastMouseDown;
  3758.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3759.       }, passiveCapture);
  3760.  
  3761.  
  3762.       document.addEventListener('mouseup', (evt) => {
  3763.         if (!evt || !evt.isTrusted) return;
  3764.         if (currentMouseDown) {
  3765.           lastMouseUp = dateNow();
  3766.           currentMouseDown = false;
  3767.           lastUserInteraction = lastMouseUp;
  3768.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3769.         }
  3770.       }, passiveCapture);
  3771.  
  3772.  
  3773.       document.addEventListener('pointerup', (evt) => {
  3774.         if (!evt || !evt.isTrusted) return;
  3775.         if (currentMouseDown) {
  3776.           lastMouseUp = dateNow();
  3777.           currentMouseDown = false;
  3778.           lastUserInteraction = lastMouseUp;
  3779.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3780.         }
  3781.       }, passiveCapture);
  3782.  
  3783.       document.addEventListener('touchstart', (evt) => {
  3784.         if (!evt || !evt.isTrusted) return;
  3785.         lastTouchDown = dateNow();
  3786.         currentTouchDown = true;
  3787.         lastUserInteraction = lastTouchDown;
  3788.       }, passiveCapture);
  3789.  
  3790.       document.addEventListener('touchmove', (evt) => {
  3791.         if (!evt || !evt.isTrusted) return;
  3792.         lastTouchDown = dateNow();
  3793.         currentTouchDown = true;
  3794.         lastUserInteraction = lastTouchDown;
  3795.       }, passiveCapture);
  3796.  
  3797.       document.addEventListener('touchend', (evt) => {
  3798.         if (!evt || !evt.isTrusted) return;
  3799.         if (currentTouchDown) {
  3800.           lastTouchUp = dateNow();
  3801.           currentTouchDown = false;
  3802.           lastUserInteraction = lastTouchUp;
  3803.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3804.         }
  3805.       }, passiveCapture);
  3806.  
  3807.       document.addEventListener('touchcancel', (evt) => {
  3808.         if (!evt || !evt.isTrusted) return;
  3809.         if (currentTouchDown) {
  3810.           lastTouchUp = dateNow();
  3811.           currentTouchDown = false;
  3812.           lastUserInteraction = lastTouchUp;
  3813.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3814.         }
  3815.       }, passiveCapture);
  3816.  
  3817.  
  3818.     }
  3819.  
  3820.     const getTimestampUsec = (itemRenderer) => {
  3821.       if (itemRenderer && 'timestampUsec' in itemRenderer) {
  3822.         return itemRenderer.timestampUsec
  3823.       } else if (itemRenderer && itemRenderer.showItemEndpoint) {
  3824.         const messageRenderer = ((itemRenderer.showItemEndpoint.showLiveChatItemEndpoint || 0).renderer || 0);
  3825.         if (messageRenderer) {
  3826.  
  3827.           const messageRendererKey = firstObjectKey(messageRenderer);
  3828.           if (messageRendererKey && messageRenderer[messageRendererKey]) {
  3829.             const messageRendererData = messageRenderer[messageRendererKey];
  3830.             if (messageRendererData && 'timestampUsec' in messageRendererData) {
  3831.               return messageRendererData.timestampUsec
  3832.             }
  3833.           }
  3834.         }
  3835.       }
  3836.       return null;
  3837.     }
  3838.  
  3839.     const onRegistryReadyForDOMOperations = () => {
  3840.  
  3841.       let firstCheckedOnYtInit = false;
  3842.  
  3843.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  3844.  
  3845.       const mightFirstCheckOnYtInit = () => {
  3846.         if (firstCheckedOnYtInit) return;
  3847.         firstCheckedOnYtInit = true;
  3848.  
  3849.         if (!document.body || !document.head) return;
  3850.         if (!assertorURL()) return;
  3851.  
  3852.         addCssManaged();
  3853.  
  3854.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  3855.         if (efsContainer && efsContainer.parentNode !== document.body) {
  3856.           document.body.appendChild(efsContainer);
  3857.         }
  3858.  
  3859.       };
  3860.  
  3861.       if (!assertorURL()) return;
  3862.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3863.  
  3864.       if (document.documentElement && document.head) {
  3865.         addCssManaged();
  3866.       }
  3867.       // console.log(document.body===null)
  3868.  
  3869.       if (ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION) {
  3870.         getLCRDummy().then(async (lcrDummy) => {
  3871.  
  3872.           const tag = "yt-live-chat-renderer"
  3873.           const dummy = lcrDummy;
  3874.  
  3875.           const cProto = getProto(dummy);
  3876.           if (!cProto || !cProto.attached) {
  3877.             console.warn(`proto.attached for ${tag} is unavailable.`);
  3878.             return;
  3879.           }
  3880.  
  3881.           mightFirstCheckOnYtInit();
  3882.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-renderer hacks");
  3883.           console.log("[Begin]");
  3884.  
  3885.  
  3886.  
  3887.  
  3888.  
  3889.  
  3890.           if (typeof cProto.playerProgressChanged_ === 'function' && !cProto.playerProgressChanged32_) {
  3891.  
  3892.             cProto.playerProgressChanged32_ = cProto.playerProgressChanged_;
  3893.  
  3894.             const pop078 = function () {
  3895.               const r = this.pop78();
  3896.  
  3897.               if (r && (r.actions || 0).length >= 1 && r.videoOffsetTimeMsec) {
  3898.                 for (const action of r.actions) {
  3899.  
  3900.                   const itemActionKey = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3901.                   if (itemActionKey) {
  3902.  
  3903.                     const itemAction = action[itemActionKey];
  3904.                     const item = (itemAction || 0).item;
  3905.                     if (typeof item === 'object') {
  3906.  
  3907.                       const rendererKey = firstObjectKey(item);
  3908.                       if (rendererKey) {
  3909.                         const renderer = item[rendererKey];
  3910.                         if (renderer && typeof renderer === 'object') {
  3911.                           renderer.__videoOffsetTimeMsec__ = r.videoOffsetTimeMsec;
  3912.                           renderer.__progressAt__ = playerProgressChangedArg1;
  3913.                         }
  3914.  
  3915.                       }
  3916.  
  3917.                     }
  3918.                   }
  3919.                 }
  3920.               }
  3921.               return r;
  3922.             }
  3923.  
  3924.             cProto.playerProgressChanged_ = function (a, b, c) {
  3925.               playerProgressChangedArg1 = a;
  3926.               playerProgressChangedArg2 = b;
  3927.               playerProgressChangedArg3 = c;
  3928.               const replayBuffer_ = this.replayBuffer_;
  3929.               if (replayBuffer_) {
  3930.                 const replayQueue = replayBuffer_.replayQueue
  3931.                 if (replayQueue && typeof replayQueue === 'object' && !replayQueue.qe3) {
  3932.  
  3933.                   replayBuffer_.replayQueue = new Proxy(replayBuffer_.replayQueue, {
  3934.                     get(target, prop, receiver) {
  3935.                       if (prop === 'qe3') return 1;
  3936.                       const v = target[prop];
  3937.                       if (prop === 'front_') {
  3938.                         if (v && typeof v.length === 'number') {
  3939.                           if (!v.pop78) {
  3940.                             v.pop78 = v.pop;
  3941.                             v.pop = pop078;
  3942.                           }
  3943.                         }
  3944.                       }
  3945.                       return v;
  3946.                     }
  3947.                   });
  3948.  
  3949.                 }
  3950.               }
  3951.               return this.playerProgressChanged32_.apply(this, arguments);
  3952.             };
  3953.  
  3954.           }
  3955.  
  3956.           console.log("[End]");
  3957.           console.groupEnd();
  3958.  
  3959.  
  3960.         });
  3961.  
  3962.       }
  3963.  
  3964.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3965.  
  3966.         const tag = "yt-live-chat-item-list-renderer"
  3967.         const dummy = document.createElement(tag);
  3968.  
  3969.         const cProto = getProto(dummy);
  3970.         if (!cProto || !cProto.attached) {
  3971.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3972.           return;
  3973.         }
  3974.  
  3975.         mightFirstCheckOnYtInit();
  3976.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3977.         console.log("[Begin]");
  3978.  
  3979.         const mclp = cProto;
  3980.         try {
  3981.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3982.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3983.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3984.           assertor(() => typeof mclp.setAtBottom === 'function');
  3985.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3986.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3987.         } catch (e) { }
  3988.  
  3989.  
  3990.         try {
  3991.           assertor(() => typeof mclp.attached === 'function');
  3992.           assertor(() => typeof mclp.detached === 'function');
  3993.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3994.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3995.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3996.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3997.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3998.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3999.         } catch (e) { }
  4000.  
  4001.         mclp.__intermediate_delay__ = null;
  4002.  
  4003.         let myk = 0;
  4004.         let mlf = 0;
  4005.         let myw = 0;
  4006.         let mzt = 0;
  4007.         let zarr = null;
  4008.         let mlg = 0;
  4009.  
  4010.         if ((mclp._flag0281_ & 0x2000) == 0) {
  4011.  
  4012.           if ((mclp.clearList || 0).length === 0) {
  4013.             (mclp._flag0281_ & 0x2) == 0 && assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  4014.             mclp.clearList66 = mclp.clearList;
  4015.             mclp.clearList = function () {
  4016.               myk++;
  4017.               mlf++;
  4018.               myw++;
  4019.               mzt++;
  4020.               mlg++;
  4021.               zarr = null;
  4022.               this.__intermediate_delay__ = null;
  4023.               this.clearList66();
  4024.             };
  4025.             console.log("clearList", "OK");
  4026.           } else {
  4027.             console.log("clearList", "NG");
  4028.           }
  4029.  
  4030.         }
  4031.  
  4032.  
  4033.  
  4034.         let onListRendererAttachedDone = false;
  4035.  
  4036.         function setList(itemOffset, items) {
  4037.  
  4038.           const isFirstTime = onListRendererAttachedDone === false;
  4039.  
  4040.           if (isFirstTime) {
  4041.             onListRendererAttachedDone = true;
  4042.             Promise.resolve().then(watchUserCSS);
  4043.             addCssManaged();
  4044.             setupEvents();
  4045.           }
  4046.  
  4047.           setupStyle(itemOffset, items);
  4048.  
  4049.           setupMutObserver(items);
  4050.         }
  4051.  
  4052.         mclp.attached419 = async function () {
  4053.  
  4054.           if (!this.isAttached) return;
  4055.  
  4056.           let maxTrial = 16;
  4057.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  4058.             if (--maxTrial < 0 || !this.isAttached) return;
  4059.             await iAFP(this.hostElement).then();
  4060.             // await new Promise(requestAnimationFrame);
  4061.           }
  4062.  
  4063.           if (this.isAttached !== true) return;
  4064.  
  4065.           if (!this.$) {
  4066.             console.warn("!this.$");
  4067.             return;
  4068.           }
  4069.           if (!this.$) return;
  4070.           /** @type {HTMLElement | null} */
  4071.           const itemScroller = this.$['item-scroller'];
  4072.           /** @type {HTMLElement | null} */
  4073.           const itemOffset = this.$['item-offset'];
  4074.           /** @type {HTMLElement | null} */
  4075.           const items = this.$['items'];
  4076.  
  4077.           if (!itemScroller || !itemOffset || !items) {
  4078.             console.warn("items.parentNode !== itemOffset");
  4079.             return;
  4080.           }
  4081.  
  4082.           if (nodeParent(items) !== itemOffset) {
  4083.  
  4084.             console.warn("items.parentNode !== itemOffset");
  4085.             return;
  4086.           }
  4087.  
  4088.  
  4089.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  4090.  
  4091.             console.warn("id incorrect");
  4092.             return;
  4093.           }
  4094.  
  4095.           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')
  4096.  
  4097.           if (!isTargetItems) {
  4098.             console.warn("!isTargetItems");
  4099.             return;
  4100.           }
  4101.  
  4102.           setList(itemOffset, items);
  4103.  
  4104.         }
  4105.  
  4106.         mclp.attached331 = mclp.attached;
  4107.         mclp.attached = function () {
  4108.           this.attached419 && this.attached419();
  4109.           return this.attached331();
  4110.         }
  4111.  
  4112.         mclp.detached331 = mclp.detached;
  4113.  
  4114.         mclp.detached = function () {
  4115.           setupMutObserver();
  4116.           return this.detached331();
  4117.         }
  4118.  
  4119.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  4120.         for (const t29 of t29s) {
  4121.           if (insp(t29).isAttached === true) {
  4122.             t29.attached419();
  4123.           }
  4124.         }
  4125.  
  4126.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  4127.  
  4128.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  4129.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  4130.  
  4131.           /** @type {Map<number, any>} */
  4132.           const aMap = new Map();
  4133.           let count = 6150;
  4134.           mclp.async66 = mclp.async;
  4135.           mclp.async = function (e, f) {
  4136.             // ensure the previous operation is done
  4137.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  4138.             const hasF = arguments.length === 2;
  4139.             const stack = new Error().stack;
  4140.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  4141.             if (count > 1e9) count = 6159;
  4142.             const resId = ++count;
  4143.             aMap.set(resId, e);
  4144.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  4145.               const rp = aMap.get(resId);
  4146.               if (typeof rp !== 'function') {
  4147.                 return;
  4148.               }
  4149.               let cancelCall = false;
  4150.               if (isFlushAsync) {
  4151.                 if (rk < 0) {
  4152.                   cancelCall = true;
  4153.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  4154.                   cancelCall = true;
  4155.                 }
  4156.               }
  4157.               if (cancelCall) {
  4158.                 aMap.delete(resId);
  4159.               } else {
  4160.                 const asyncEn = function () {
  4161.                   aMap.delete(resId);
  4162.                   return rp.apply(this, arguments);
  4163.                 };
  4164.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  4165.               }
  4166.             });
  4167.  
  4168.             return resId;
  4169.           }
  4170.  
  4171.           mclp.cancelAsync66 = mclp.cancelAsync;
  4172.           mclp.cancelAsync = function (resId) {
  4173.             if (resId <= 6150) {
  4174.               this.cancelAsync66(resId);
  4175.             } else if (aMap.has(resId)) {
  4176.               const rp = aMap.get(resId);
  4177.               aMap.delete(resId);
  4178.               if (typeof rp !== 'function') {
  4179.                 this.cancelAsync66(rp);
  4180.               }
  4181.             }
  4182.           }
  4183.  
  4184.           console.log("async", "OK");
  4185.         } else {
  4186.           console.log("async", "NG");
  4187.         }
  4188.  
  4189.  
  4190.         if ((mclp._flag0281_ & 0x2) == 0) {
  4191.           if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  4192.  
  4193.             assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  4194.             mclp.showNewItems66_ = mclp.showNewItems_;
  4195.  
  4196.             mclp.showNewItems77_ = async function () {
  4197.               if (myk > 1e9) myk = 9;
  4198.               let tid = ++myk;
  4199.  
  4200.               await iAFP(this.hostElement).then();
  4201.               // await new Promise(requestAnimationFrame);
  4202.  
  4203.               if (tid !== myk) {
  4204.                 return;
  4205.               }
  4206.  
  4207.               const cnt = this;
  4208.  
  4209.               await Promise.resolve();
  4210.               cnt.showNewItems66_();
  4211.  
  4212.               await Promise.resolve();
  4213.  
  4214.             }
  4215.  
  4216.             mclp.showNewItems_ = function () {
  4217.  
  4218.               const cnt = this;
  4219.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4220.                 cnt.showNewItems77_().then(() => {
  4221.                   resolve();
  4222.                 });
  4223.               });
  4224.             }
  4225.  
  4226.             console.log("showNewItems_", "OK");
  4227.           } else {
  4228.             console.log("showNewItems_", "NG");
  4229.           }
  4230.  
  4231.         }
  4232.  
  4233.         if ((mclp._flag0281_ & 0x2000) == 0) {
  4234.           if ((mclp.flushActiveItems_ || 0).length === 0) {
  4235.  
  4236.             if ((mclp._flag0281_ & 0x2) == 0) {
  4237.  
  4238.               const sfi = fnIntegrity(mclp.flushActiveItems_);
  4239.               if (sfi === '0.156.86') {
  4240.                 // https://www.youtube.com/s/desktop/f61c8d85/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  4241.  
  4242.                 // added "refreshOffsetContainerHeight_"
  4243.  
  4244.                 //   f.flushActiveItems_ = function() {
  4245.                 //     var a = this;
  4246.                 //     if (0 < this.activeItems_.length)
  4247.                 //         if (this.canScrollToBottom_()) {
  4248.                 //             var b = Math.max(this.visibleItems.length + this.activeItems_.length - this.data.maxItemsToDisplay, 0);
  4249.                 //             b && this.splice("visibleItems", 0, b);
  4250.                 //             if (this.isSmoothScrollEnabled_() || this.dockableMessages.length)
  4251.                 //                 this.preinsertHeight_ = this.items.clientHeight;
  4252.                 //             this.activeItems_.unshift("visibleItems");
  4253.                 //             try {
  4254.                 //                 this.push.apply(this, this.activeItems_)
  4255.                 //             } catch (c) {
  4256.                 //                 fm(c)
  4257.                 //             }
  4258.                 //             this.activeItems_ = [];
  4259.                 //             this.isSmoothScrollEnabled_() ? this.canScrollToBottom_() && Mw(function() {
  4260.                 //                 a.showNewItems_()
  4261.                 //             }) : Mw(function() {
  4262.                 //                 a.refreshOffsetContainerHeight_();
  4263.                 //                 a.maybeScrollToBottom_()
  4264.                 //             })
  4265.                 //         } else
  4266.                 //             this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay)
  4267.                 // }
  4268.                 // ;
  4269.  
  4270.               } else if (sfi === '0.150.84') {
  4271.                 // https://www.youtube.com/s/desktop/e4d15d2c/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  4272.                 // var b = Math.max(this.visibleItems.length + this.activeItems_.length - this.data.maxItemsToDisplay, 0);
  4273.                 //     b && this.splice("visibleItems", 0, b);
  4274.                 //     if (this.isSmoothScrollEnabled_() || this.dockableMessages.length)
  4275.                 //         this.preinsertHeight_ = this.items.clientHeight;
  4276.                 //     this.activeItems_.unshift("visibleItems");
  4277.                 //     try {
  4278.                 //         this.push.apply(this, this.activeItems_)
  4279.                 //     } catch (c) {
  4280.                 //         nm(c)
  4281.                 //     }
  4282.                 //     this.activeItems_ = [];
  4283.                 //     this.isSmoothScrollEnabled_() ? this.canScrollToBottom_() && zQ(function() {
  4284.                 //         a.showNewItems_()
  4285.                 //     }) : zQ(function() {
  4286.                 //         a.maybeScrollToBottom_()
  4287.                 //     })
  4288.               } else if (sfi === '0.137.81' || sfi === '0.138.81') {
  4289.                 // e.g. https://www.youtube.com/yts/jsbin/live_chat_polymer-vflCyWEBP/live_chat_polymer.js
  4290.               } else {
  4291.                 assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.150.84'));
  4292.               }
  4293.             }
  4294.  
  4295.             let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  4296.  
  4297.             mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  4298.  
  4299.  
  4300.             const preloadFn = (acItems) => {
  4301.               let waitFor = [];
  4302.               /** @type {Set<string>} */
  4303.               const imageLinks = new Set();
  4304.  
  4305.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  4306.                 for (const item of acItems) {
  4307.                   fixLiveChatItem(item, imageLinks);
  4308.                 }
  4309.               }
  4310.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  4311.  
  4312.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  4313.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  4314.                 // preload performs the high priority fetching.
  4315.                 // prefetch delays the chat display if the video resoruce is demanding.
  4316.  
  4317.                 if (rel) {
  4318.  
  4319.                   imageLinks.forEach(imageLink => {
  4320.                     let d = false;
  4321.                     if (SKIP_PRELOAD_EMOJI && imageLink.includes('.ggpht.com/')) return;
  4322.                     const isEmoji = imageLink.includes('/emoji/');
  4323.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  4324.                     if (!pretechedSet.has(imageLink)) {
  4325.                       pretechedSet.add(imageLink);
  4326.                       d = true;
  4327.                     }
  4328.                     if (d) {
  4329.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  4330.  
  4331.                     }
  4332.                   })
  4333.  
  4334.                 }
  4335.  
  4336.               }
  4337.  
  4338.               return async () => {
  4339.                 if (waitFor.length > 0) {
  4340.                   await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  4341.                 }
  4342.                 waitFor.length = 0;
  4343.                 waitFor = null;
  4344.               };
  4345.  
  4346.             };
  4347.  
  4348.             mclp.flushActiveItems78_ = async function (tid) {
  4349.               try {
  4350.  
  4351.                 if (tid !== mlf) return;
  4352.                 if ((this._flag0281_ & 0x4) == 0x4) {
  4353.                   const cnt = this;
  4354.  
  4355.                   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4356.                   if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  4357.  
  4358.                   mlf++;
  4359.                   if (mlg > 1e9) mlg = 9;
  4360.                   ++mlg;
  4361.                   const acItems = cnt.activeItems_;
  4362.                   if (acItems.length < MAX_ITEMS_FOR_FULL_FLUSH) {
  4363.                     const pn = preloadFn(acItems);
  4364.                     await pn();
  4365.                   }
  4366.                   cnt.flushActiveItems66_();
  4367.  
  4368.                   return 1;
  4369.  
  4370.                 }
  4371.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  4372.                 let logger = false;
  4373.                 const cnt = this;
  4374.                 let immd = cnt.__intermediate_delay__;
  4375.                 await iAFP(this.hostElement).then();
  4376.                 // await new Promise(requestAnimationFrame);
  4377.  
  4378.                 if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4379.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  4380.  
  4381.                 mlf++;
  4382.                 if (mlg > 1e9) mlg = 9;
  4383.                 ++mlg;
  4384.  
  4385.                 const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  4386.                 const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  4387.                 let changeMaxItemsToDisplay = false;
  4388.                 const activeItemsLen = this.activeItems_.length;
  4389.                 if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  4390.                   logger = true;
  4391.  
  4392.                   groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  4393.  
  4394.                   logger && console.log('[Begin]')
  4395.  
  4396.                   console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  4397.                   if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  4398.                     console.log('reduce maxitems');
  4399.                     if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  4400.                       // as all the rendered chats are already "outdated"
  4401.                       // all old chats shall remove and reduced number of few chats will be rendered
  4402.                       // then restore to the original number
  4403.                       changeMaxItemsToDisplay = true;
  4404.                       this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  4405.                       console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  4406.                     }
  4407.                     this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  4408.                     //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  4409.  
  4410.                     console.log('new this.activeItems_.length > N', this.activeItems_.length);
  4411.                   } else {
  4412.                     this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  4413.  
  4414.                     console.log('new this.activeItems_.length > N', this.activeItems_.length);
  4415.                   }
  4416.                 }
  4417.                 // it is found that it will render all stacked chats after switching back from background
  4418.                 // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  4419.                 // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  4420.  
  4421.                 cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  4422.                 await Promise.resolve();
  4423.                 const acItems = cnt.activeItems_;
  4424.                 const len1 = acItems.length;
  4425.                 if (!len1) console.warn('cnt.activeItems_.length = 0');
  4426.  
  4427.                 const pn = preloadFn(acItems);
  4428.                 const noVisibleItem1 = ((cnt.visibleItems || 0).length || 0) === 0;
  4429.                 skipDontRender = noVisibleItem1;
  4430.                 await pn();
  4431.                 // console.log('ss2', Date.now())
  4432.                 cnt.flushActiveItems66_();
  4433.                 const noVisibleItem2 = ((cnt.visibleItems || 0).length || 0) === 0;
  4434.                 skipDontRender = noVisibleItem2;
  4435.                 await Promise.resolve();
  4436.                 if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  4437.                   this.data.maxItemsToDisplay = tmpMaxItemsCount;
  4438.  
  4439.                   logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  4440.                   //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  4441.                 } else if (changeMaxItemsToDisplay) {
  4442.  
  4443.                   logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  4444.                     maxItemsToDisplay: this.data.maxItemsToDisplay,
  4445.                     reducedMaxItemsToDisplay,
  4446.                     originalMaxItemsToDisplay: tmpMaxItemsCount
  4447.                   });
  4448.                 }
  4449.                 logger && console.log('[End]');
  4450.  
  4451.                 logger && console.groupEnd();
  4452.  
  4453.                 if (noVisibleItem1 && !noVisibleItem2) {
  4454.                   // fix possible no auto scroll issue.
  4455.                   !((cnt.__notRequired__ || 0) & 256) && setTimeout(() => cnt.setAtBottom(), 1);
  4456.                 }
  4457.  
  4458.                 if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  4459.  
  4460.  
  4461.                   const ff = () => {
  4462.  
  4463.                     if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4464.                     //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4465.                     if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  4466.  
  4467.                       if (typeof nextBrowserTick !== 'function') {
  4468.                         cnt.scrollToBottom_();
  4469.                         Promise.resolve().then(() => {
  4470.                           if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4471.                           if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  4472.                         });
  4473.                       } else {
  4474.                         nextBrowserTick(() => {
  4475.                           if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4476.                           cnt.scrollToBottom_();
  4477.                         });
  4478.                       }
  4479.  
  4480.                     }
  4481.                   }
  4482.  
  4483.                   ff();
  4484.  
  4485.  
  4486.                   Promise.resolve().then(ff);
  4487.  
  4488.                   // requestAnimationFrame(ff);
  4489.                 } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  4490.  
  4491.                   const knt = cnt;
  4492.                   if (!scrollChatFn) {
  4493.                     const cnt = knt;
  4494.                     const f = () => {
  4495.                       const itemScroller = cnt.itemScroller;
  4496.                       if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  4497.                       if (!cnt.atBottom) {
  4498.                         cnt.scrollToBottom_();
  4499.                       } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  4500.                         itemScroller.scrollTop = itemScroller.scrollHeight;
  4501.                       }
  4502.                     };
  4503.                     if (typeof nextBrowserTick !== 'function') {
  4504.                       scrollChatFn = () => Promise.resolve().then(f).then(f);
  4505.                     } else {
  4506.                       scrollChatFn = () => nextBrowserTick(f);
  4507.                     }
  4508.                   }
  4509.  
  4510.                   scrollChatFn();
  4511.                 }
  4512.  
  4513.                 return 1;
  4514.  
  4515.  
  4516.               } catch (e) {
  4517.                 console.warn(e);
  4518.               }
  4519.             }
  4520.  
  4521.             mclp.flushActiveItems77_ = function () {
  4522.  
  4523.               return new Promise(resResolve => {
  4524.                 try {
  4525.                   const cnt = this;
  4526.                   if (mlf > 1e9) mlf = 9;
  4527.                   let tid = ++mlf;
  4528.                   const hostElement = cnt.hostElement || cnt;
  4529.                   if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  4530.                   if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  4531.  
  4532.                   // 4 times to maxItems to avoid frequent trimming.
  4533.                   // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  4534.  
  4535.                   const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  4536.                   this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  4537.                   if (cnt.canScrollToBottom_()) {
  4538.                     cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  4539.                       .then(() => cnt.flushActiveItems78_(tid)) // async function
  4540.                       .then((asyncResult) => {
  4541.                         resResolve(asyncResult); // either undefined or 1
  4542.                         resResolve = null;
  4543.                       }).catch((e) => {
  4544.                         console.warn(e);
  4545.                         if (resResolve) resResolve();
  4546.                       });
  4547.                   } else {
  4548.                     resResolve(2);
  4549.                     resResolve = null;
  4550.                   }
  4551.                 } catch (e) {
  4552.                   console.warn(e);
  4553.                   if (resResolve) resResolve();
  4554.                 }
  4555.  
  4556.  
  4557.               });
  4558.  
  4559.             }
  4560.  
  4561.             mclp.flushActiveItems_ = function () {
  4562.               const cnt = this;
  4563.  
  4564.               if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  4565.  
  4566.               if (cnt.activeItems_.length === 0) {
  4567.                 cnt.__intermediate_delay__ = null;
  4568.                 return;
  4569.               }
  4570.  
  4571.               const cntData = ((cnt || 0).data || 0);
  4572.               if (cntData.maxItemsToDisplay944 === undefined) {
  4573.                 cntData.maxItemsToDisplay944 = null;
  4574.                 if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  4575.                 cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  4576.               }
  4577.  
  4578.               // ignore previous __intermediate_delay__ and create a new one
  4579.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4580.                 cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  4581.                   if (rt === 1) {
  4582.                     resolve(1); // success, scroll to bottom
  4583.                     if (hasMoreMessageState === 1) {
  4584.                       hasMoreMessageState = 0;
  4585.                       const showMore = (cnt.$ || 0)['show-more'];
  4586.                       if (showMore) {
  4587.                         showMore.classList.remove('has-new-messages-miuzp');
  4588.                       }
  4589.                     }
  4590.                   }
  4591.                   else if (rt === 2) {
  4592.                     resolve(2); // success, trim
  4593.                     if (hasMoreMessageState === 0) {
  4594.                       hasMoreMessageState = 1;
  4595.                       const showMore = cnt.$['show-more'];
  4596.                       if (showMore) {
  4597.                         showMore.classList.add('has-new-messages-miuzp');
  4598.                       }
  4599.                     }
  4600.                   }
  4601.                   else resolve(-1); // skip
  4602.                 }).catch(e => {
  4603.                   console.warn(e);
  4604.                 });
  4605.               });
  4606.  
  4607.             }
  4608.             console.log("flushActiveItems_", "OK");
  4609.           } else {
  4610.             console.log("flushActiveItems_", "NG");
  4611.           }
  4612.         }
  4613.  
  4614.         if ((mclp._flag0281_ & 0x40) == 0) {
  4615.  
  4616.           if (SUPPRESS_refreshOffsetContainerHeight_ && typeof mclp.refreshOffsetContainerHeight_ === 'function' && !mclp.refreshOffsetContainerHeight26_ && mclp.refreshOffsetContainerHeight_.length === 0) {
  4617.             assertor(() => fnIntegrity(mclp.refreshOffsetContainerHeight_, '0.31.21'));
  4618.             mclp.refreshOffsetContainerHeight26_ = mclp.refreshOffsetContainerHeight_;
  4619.             mclp.refreshOffsetContainerHeight_ = function () {
  4620.               // var a = this.itemScroller.clientHeight;
  4621.               // this.itemOffset.style.height = this.items.clientHeight + "px";
  4622.               // this.bottomAlignMessages && (this.itemOffset.style.minHeight = a + "px")
  4623.             }
  4624.             console.log("refreshOffsetContainerHeight_", "OK");
  4625.           } else {
  4626.             console.log("refreshOffsetContainerHeight_", "NG");
  4627.           }
  4628.  
  4629.         }
  4630.  
  4631.         if ((mclp._flag0281_ & 0x80) == 0) {
  4632.           mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  4633.             try {
  4634.               if (mlg > 1e9) mlg = 9;
  4635.               const tid = ++mlg;
  4636.               const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  4637.               const runCond = () => this.canScrollToBottom_();
  4638.               if (!keepTrialCond()) return;
  4639.               if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  4640.               await new Promise(r => setTimeout(r, 80));
  4641.               if (!keepTrialCond()) return;
  4642.               if (runCond()) return this.flushActiveItems_() | 1;
  4643.               await iAFP(this.hostElement).then();
  4644.               // await new Promise(requestAnimationFrame);
  4645.               if (runCond()) return this.flushActiveItems_() | 1;
  4646.             } catch (e) {
  4647.               console.warn(e);
  4648.             }
  4649.           }
  4650.         }
  4651.  
  4652.         if ((mclp._flag0281_ & 0x40) == 0) {
  4653.  
  4654.           if ((mclp.atBottomChanged_ || 0).length === 1) {
  4655.             // note: if the scrolling is too frequent, the show more visibility might get wrong.
  4656.  
  4657.             const sfi = fnIntegrity(mclp.atBottomChanged_);
  4658.             if (sfi === '1.73.37') {
  4659.               // https://www.youtube.com/s/desktop/e4d15d2c/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  4660.             } else if (sfi === '1.75.39') {
  4661.               // e.g. https://www.youtube.com/yts/jsbin/live_chat_polymer-vflCyWEBP/live_chat_polymer.js
  4662.             } else {
  4663.               assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.73.37'));
  4664.             }
  4665.  
  4666.             const querySelector = HTMLElement.prototype.querySelector;
  4667.             const U = (element) => ({
  4668.               querySelector: (selector) => querySelector.call(element, selector)
  4669.             });
  4670.  
  4671.             let qid = 0;
  4672.             mclp.__updateButtonVisibility371__ = function (button) {
  4673.               Promise.resolve().then(() => {
  4674.                 button.style.visibility = this.__buttonVisibility371__;
  4675.               });
  4676.             }
  4677.             const fixButtonOnClick = function (cnt, button) {
  4678.               button.addEventListener('click', (evt) => {
  4679.                 evt.stopImmediatePropagation();
  4680.                 evt.stopPropagation();
  4681.                 evt.preventDefault();
  4682.                 Promise.resolve().then(() => {
  4683.                   cnt.scrollToBottom_();
  4684.                 });
  4685.               }, true);
  4686.               // button.addEventListener('pointerup', (evt)=>{
  4687.               //   evt.stopImmediatePropagation();
  4688.               //   evt.stopPropagation();
  4689.               // }, true);
  4690.               // button.addEventListener('mouseup', (evt)=>{
  4691.               //   evt.stopImmediatePropagation();
  4692.               //   evt.stopPropagation();
  4693.               // }, true);
  4694.             }
  4695.             mclp.atBottomChanged_ = function (a) {
  4696.               const button = (this.$ || 0)['show-more'];
  4697.               if (button) {
  4698.                 // primary execution
  4699.                 if (a) {
  4700.                   if (this.__buttonVisibility371__ !== "hidden") {
  4701.                     this.__buttonVisibility371__ = "hidden";
  4702.                     if (!this.hideShowMoreAsync_) {
  4703.                       const tid = ++qid;
  4704.                       this.hideShowMoreAsync_ = foregroundPromiseFn().then(() => {
  4705.                         if (tid !== qid) {
  4706.                           return;
  4707.                         }
  4708.                         this.__updateButtonVisibility371__(button);
  4709.                       });
  4710.                     }
  4711.                   }
  4712.                 } else {
  4713.                   if (this.__buttonVisibility371__ !== "visible") {
  4714.                     this.__buttonVisibility371__ = "visible";
  4715.                     if (this.hideShowMoreAsync_) {
  4716.                       qid++;
  4717.                     }
  4718.                     this.hideShowMoreAsync_ = null;
  4719.                     if (!button.__fix_onclick__) {
  4720.                       button.__fix_onclick__ = true;
  4721.                       fixButtonOnClick(this, button);
  4722.                     }
  4723.                     this.__updateButtonVisibility371__(button);
  4724.                   }
  4725.                 }
  4726.               } else {
  4727.                 // fallback
  4728.                 let tid = ++qid;
  4729.                 let b = this;
  4730.                 a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  4731.                   if (tid !== qid) return;
  4732.                   U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  4733.                 }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  4734.                   this.hideShowMoreAsync_ = null,
  4735.                   U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  4736.               }
  4737.             }
  4738.  
  4739.             console.log("atBottomChanged_", "OK");
  4740.           } else {
  4741.             console.log("atBottomChanged_", "NG");
  4742.           }
  4743.         }
  4744.  
  4745.  
  4746.         if ((mclp._flag0281_ & 0x2) == 0) {
  4747.           if ((mclp.onScrollItems_ || 0).length === 1) {
  4748.  
  4749.             assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  4750.             mclp.onScrollItems66_ = mclp.onScrollItems_;
  4751.             mclp.onScrollItems77_ = async function (evt) {
  4752.               if (myw > 1e9) myw = 9;
  4753.               let tid = ++myw;
  4754.  
  4755.               await iAFP(this.hostElement).then();
  4756.               // await new Promise(requestAnimationFrame);
  4757.  
  4758.               if (tid !== myw) {
  4759.                 return;
  4760.               }
  4761.  
  4762.               const cnt = this;
  4763.  
  4764.               await Promise.resolve();
  4765.               if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  4766.                 const onScrollItemsBasicOnly_ = !!((cnt.__notRequired__ || 0) & 512);
  4767.                 await Promise.resolve().then(() => {
  4768.                   this.ytRendererBehavior.onScroll(evt);
  4769.                 }).then(() => {
  4770.                   if (onScrollItemsBasicOnly_) return;
  4771.                   if (this.canScrollToBottom_()) {
  4772.                     const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  4773.                     if (hasUserJustInteracted) {
  4774.                       // only when there is an user action
  4775.                       !((cnt.__notRequired__ || 0) & 256) && this.setAtBottom();
  4776.                       return 1;
  4777.                     }
  4778.                   } else {
  4779.                     // no message inserting
  4780.                     !((cnt.__notRequired__ || 0) & 256) && this.setAtBottom();
  4781.                     return 1;
  4782.                   }
  4783.                 }).then((r) => {
  4784.  
  4785.                   if (onScrollItemsBasicOnly_) return;
  4786.                   if (this.activeItems_.length) {
  4787.  
  4788.                     if (this.canScrollToBottom_()) {
  4789.                       this.flushActiveItems_();
  4790.                       return 1 && r;
  4791.                     } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  4792.                       // delayed due to user action
  4793.                       this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  4794.                       return 0;
  4795.                     }
  4796.                   }
  4797.                 }).then((r) => {
  4798.                   if (onScrollItemsBasicOnly_) return;
  4799.                   if (r) {
  4800.                     // ensure setAtBottom is correctly set
  4801.                     !((cnt.__notRequired__ || 0) & 256) && this.setAtBottom();
  4802.                   }
  4803.                 });
  4804.               } else {
  4805.                 cnt.onScrollItems66_(evt);
  4806.               }
  4807.  
  4808.               await Promise.resolve();
  4809.  
  4810.             }
  4811.  
  4812.             mclp.onScrollItems_ = function (evt) {
  4813.  
  4814.               const cnt = this;
  4815.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4816.                 cnt.onScrollItems77_(evt).then(() => {
  4817.                   resolve();
  4818.                 });
  4819.               });
  4820.             }
  4821.             console.log("onScrollItems_", "OK");
  4822.           } else {
  4823.             console.log("onScrollItems_", "NG");
  4824.           }
  4825.         }
  4826.  
  4827.         if ((mclp._flag0281_ & 0x2) == 0) {
  4828.           if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  4829.  
  4830.             const sfi = fnIntegrity(mclp.handleLiveChatActions_);
  4831.             if (sfi === '1.39.20') {
  4832.               // TBC
  4833.             } else if (sfi === '1.31.17') {
  4834.               // original
  4835.             } else {
  4836.               assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  4837.             }
  4838.  
  4839.             mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  4840.  
  4841.             mclp.handleLiveChatActions77_ = async function (arr) {
  4842.               if (typeof (arr || 0).length !== 'number') {
  4843.                 this.handleLiveChatActions66_(arr);
  4844.                 return;
  4845.               }
  4846.               if (mzt > 1e9) mzt = 9;
  4847.               let tid = ++mzt;
  4848.  
  4849.               if (zarr === null) zarr = arr;
  4850.               else Array.prototype.push.apply(zarr, arr);
  4851.               arr = null;
  4852.  
  4853.               await iAFP(this.hostElement).then();
  4854.               // await new Promise(requestAnimationFrame);
  4855.  
  4856.               if (tid !== mzt || zarr === null) {
  4857.                 return;
  4858.               }
  4859.  
  4860.               const carr = zarr;
  4861.               zarr = null;
  4862.  
  4863.               await Promise.resolve();
  4864.               this.handleLiveChatActions66_(carr);
  4865.               await Promise.resolve();
  4866.  
  4867.             }
  4868.  
  4869.             mclp.handleLiveChatActions_ = function (arr) {
  4870.  
  4871.               const cnt = this;
  4872.               cnt.__intermediate_delay__ = new Promise(resolve => {
  4873.                 cnt.handleLiveChatActions77_(arr).then(() => {
  4874.                   resolve();
  4875.                 });
  4876.               });
  4877.             }
  4878.             console.log("handleLiveChatActions_", "OK");
  4879.           } else {
  4880.             console.log("handleLiveChatActions_", "NG");
  4881.           }
  4882.         }
  4883.  
  4884.         mclp.hasUserJustInteracted11_ = () => {
  4885.           const t = dateNow();
  4886.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  4887.         }
  4888.  
  4889.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  4890.  
  4891.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  4892.  
  4893.           mclp.canScrollToBottom_ = function () {
  4894.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  4895.           }
  4896.  
  4897.           console.log("canScrollToBottom_", "OK");
  4898.         } else {
  4899.           console.log("canScrollToBottom_", "NG");
  4900.         }
  4901.  
  4902.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  4903.  
  4904.           mclp.isSmoothScrollEnabled_ = function () {
  4905.             return false;
  4906.           }
  4907.  
  4908.           mclp.maybeResizeScrollContainer_ = function () {
  4909.             //
  4910.           }
  4911.  
  4912.           mclp.refreshOffsetContainerHeight_ = function () {
  4913.             //
  4914.           }
  4915.  
  4916.           mclp.smoothScroll_ = function () {
  4917.             //
  4918.           }
  4919.  
  4920.           mclp.resetSmoothScroll_ = function () {
  4921.             //
  4922.           }
  4923.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  4924.         } else {
  4925.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  4926.         }
  4927.  
  4928.         if ((this._flag0281_ & 0x8) == 0) {
  4929.  
  4930.  
  4931.           if (typeof mclp.forEachItem_ === 'function' && !mclp.forEachItem66_ && skipErrorForhandleAddChatItemAction_ && mclp.forEachItem_.length === 1) {
  4932.  
  4933.             mclp.forEachItem66_ = mclp.forEachItem_;
  4934.             mclp.forEachItem_ = function (a) {
  4935.  
  4936.               if ((this._flag0281_ & 0x8) == 0x8) return this.forEachItem66_(a);
  4937.  
  4938.               // ƒ (a){this.visibleItems.forEach(a.bind(this,"visibleItems"));this.activeItems_.forEach(a.bind(this,"activeItems_"))}
  4939.  
  4940.               try {
  4941.  
  4942.                 let items801 = false;
  4943.                 if (typeof a === 'function') {
  4944.                   const items = this.items;
  4945.                   if (items instanceof HTMLDivElement) {
  4946.                     const ev = this.visibleItems;
  4947.                     const ea = this.activeItems_;
  4948.                     if (ev && ea && ev.length >= 0 && ea.length >= 0) {
  4949.                       items801 = items;
  4950.                     }
  4951.                   }
  4952.                 }
  4953.  
  4954.                 if (items801) {
  4955.                   items801.__children801__ = 1;
  4956.                   const res = this.forEachItem66_(a);
  4957.                   items801.__children801__ = 0;
  4958.                   return res;
  4959.                 }
  4960.  
  4961.               } catch (e) { }
  4962.               return this.forEachItem66_(a);
  4963.  
  4964.  
  4965.               // this.visibleItems.forEach((val, idx, arr)=>{
  4966.               //   a.call(this, 'visibleItems', val, idx, arr);
  4967.               // });
  4968.  
  4969.               // this.activeItems_.forEach((val, idx, arr)=>{
  4970.               //   a.call(this, 'activeItems_', val, idx, arr);
  4971.               // });
  4972.  
  4973.  
  4974.  
  4975.             }
  4976.  
  4977.  
  4978.           }
  4979.  
  4980.         }
  4981.  
  4982.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4983.  
  4984.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  4985.           mclp.handleAddChatItemAction_ = function (a) {
  4986.             try {
  4987.               if (a && typeof a === 'object' && !('length' in a)) {
  4988.                 fixLiveChatItem(a.item, null);
  4989.                 console.assert(arguments[0] === a);
  4990.               }
  4991.             } catch (e) { console.warn(e) }
  4992.             let res;
  4993.             if (skipErrorForhandleAddChatItemAction_) { // YouTube Native Engine Issue
  4994.               try {
  4995.                 res = this.handleAddChatItemAction66_.apply(this, arguments);
  4996.               } catch (e) {
  4997.                 if (e && (e.message || '').includes('.querySelector(')) {
  4998.                   console.log("skipErrorForhandleAddChatItemAction_", e.message);
  4999.                 } else {
  5000.                   throw e;
  5001.                 }
  5002.               }
  5003.             } else {
  5004.               res = this.handleAddChatItemAction66_.apply(this, arguments);
  5005.             }
  5006.             return res;
  5007.           }
  5008.  
  5009.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  5010.         } else {
  5011.  
  5012.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  5013.         }
  5014.  
  5015.  
  5016.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  5017.  
  5018.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  5019.           mclp.handleReplaceChatItemAction_ = function (a) {
  5020.             try {
  5021.               if (a && typeof a === 'object' && !('length' in a)) {
  5022.                 fixLiveChatItem(a.replacementItem, null);
  5023.                 console.assert(arguments[0] === a);
  5024.               }
  5025.             } catch (e) { console.warn(e) }
  5026.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  5027.           }
  5028.  
  5029.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  5030.         } else {
  5031.  
  5032.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  5033.         }
  5034.  
  5035.         console.log("[End]");
  5036.         console.groupEnd();
  5037.  
  5038.       }).catch(console.warn);
  5039.  
  5040.  
  5041.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  5042.  
  5043.         let yd = (this.__dataHost || insp(this).__dataHost || 0).__data;
  5044.  
  5045.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  5046.  
  5047.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  5048.           let v = `${attrValue}`;
  5049.           // conside a ticker is 101px width
  5050.           // 1% = 1.01px
  5051.           // 0.2% = 0.202px
  5052.  
  5053.  
  5054.           const ratio1 = (yd.ratio * 100);
  5055.           if (ratio1 > -1) { // avoid NaN
  5056.  
  5057.             // countdownDurationMs
  5058.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  5059.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  5060.             // 150000 - 1%    <1% = 1.5s>
  5061.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  5062.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  5063.  
  5064.             // 99px * 5% = 4.95px
  5065.  
  5066.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  5067.  
  5068.  
  5069.             // 1% Duration
  5070.  
  5071.             let ratio2 = ratio1;
  5072.  
  5073.             const ydd = yd.data;
  5074.             if (ydd) {
  5075.  
  5076.               const d1 = ydd.durationSec;
  5077.               const d2 = ydd.fullDurationSec;
  5078.  
  5079.               // @ step timing [min. 0.2%]
  5080.               let numOfSteps = 500;
  5081.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  5082.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  5083.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  5084.                 else if (d2 > 100) numOfSteps = 100; // 1%
  5085.                 else if (d2 > 50) numOfSteps = 50; // 2%
  5086.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  5087.                 else numOfSteps = 20;
  5088.               }
  5089.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  5090.               if (numOfSteps < 5) numOfSteps = 5;
  5091.  
  5092.               const rd = numOfSteps / 100.0;
  5093.  
  5094.               ratio2 = Math.round(ratio2 * rd) / rd;
  5095.  
  5096.               // ratio2 = Math.round(ratio2 * 5) / 5;
  5097.               ratio2 = ratio2.toFixed(1);
  5098.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  5099.  
  5100.               if (yd.__style_last__ === v) return;
  5101.               yd.__style_last__ = v;
  5102.               // do not consider any delay here.
  5103.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  5104.  
  5105.             }
  5106.           }
  5107.  
  5108.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  5109.  
  5110.  
  5111.         } else {
  5112.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  5113.         }
  5114.  
  5115.       };
  5116.  
  5117.  
  5118.       const fpTicker = (renderer) => {
  5119.         const cnt = insp(renderer);
  5120.         assertor(() => typeof (cnt || 0).is === 'string');
  5121.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  5122.         const container = (cnt.$ || 0).container;
  5123.         if (container) {
  5124.           assertor(() => (container || 0).nodeType === 1);
  5125.           assertor(() => typeof container.setAttribute === 'function');
  5126.           container.setAttribute = tickerContainerSetAttribute;
  5127.         } else {
  5128.           console.warn(`"container" does not exist in ${cnt.is}`);
  5129.         }
  5130.       };
  5131.  
  5132.  
  5133.       const tags = [
  5134.         "yt-live-chat-ticker-paid-message-item-renderer",
  5135.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  5136.         "yt-live-chat-ticker-renderer",
  5137.         "yt-live-chat-ticker-sponsor-item-renderer"
  5138.       ];
  5139.  
  5140.       const tagsItemRenderer = [
  5141.         "yt-live-chat-ticker-paid-message-item-renderer",
  5142.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  5143.         "yt-live-chat-ticker-renderer",
  5144.         "yt-live-chat-ticker-sponsor-item-renderer"
  5145.       ];
  5146.  
  5147.  
  5148.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  5149.  
  5150.         mightFirstCheckOnYtInit();
  5151.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  5152.         console.log("[Begin]");
  5153.  
  5154.         let dummyValueForStyleReturn = null;
  5155.  
  5156.         const genDummyValueForStyleReturn = () => {
  5157.           let s = `--nx:82;`
  5158.           let ro = {
  5159.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  5160.             "implementsGoogStringTypedString": true
  5161.           };
  5162.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  5163.           return ro;
  5164.         }
  5165.  
  5166.         let isCSSPropertySupported_ = null;
  5167.         const isCSSPropertySupported = () => {
  5168.  
  5169.           // @property --ticker-rtime
  5170.  
  5171.           if (typeof isCSSPropertySupported_ === 'boolean') return isCSSPropertySupported_;
  5172.           isCSSPropertySupported_ = false;
  5173.  
  5174.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return false;
  5175.           const documentElement = document.documentElement;
  5176.           if (!documentElement) {
  5177.             console.warn('document.documentElement is not found');
  5178.             return false;
  5179.           }
  5180.           if (`${getComputedStyleCached(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  5181.             return false;
  5182.           }
  5183.  
  5184.           const ae = animate.call(documentElement,
  5185.             [
  5186.               { '--ticker-rtime': '70%' },
  5187.               { '--ticker-rtime': '30%' }
  5188.             ],
  5189.             {
  5190.               fill: "forwards",
  5191.               duration: 1000 * 40,
  5192.               easing: 'linear'
  5193.             }
  5194.           );
  5195.  
  5196.           let animatedValue = getComputedStyleCached(document.documentElement).getPropertyValue('--ticker-rtime');
  5197.           ae.finish();
  5198.           if (`${animatedValue}`.length !== 3) return false;
  5199.  
  5200.           isCSSPropertySupported_ = true;
  5201.           return true;
  5202.  
  5203.         };
  5204.  
  5205.  
  5206.         let windowShownAt = -1;
  5207.         const setupEventForWindowShownAt = () => {
  5208.           window.addEventListener('visibilitychange', () => {
  5209.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  5210.             else windowShownAt = 0;
  5211.           }, false);
  5212.         }
  5213.  
  5214.         const dProto = {
  5215.  
  5216.           detachedForTickerInit: function () {
  5217.  
  5218.             try {
  5219.  
  5220.               this.actionHandlerBehavior.unregisterActionMap(this.behaviorActionMap)
  5221.  
  5222.               // this.behaviorActionMap = 0;
  5223.               // this.isVisibilityRoot = 0;
  5224.  
  5225.  
  5226.             } catch (e) { }
  5227.  
  5228.  
  5229.             return this.detached582MemoryLeak();
  5230.           },
  5231.  
  5232.           attachedForTickerInit: function () {
  5233.  
  5234.             fpTicker(this.hostElement || this);
  5235.             return this.attached77();
  5236.  
  5237.           },
  5238.  
  5239.  
  5240.           // doAnimator
  5241.  
  5242.           _makeAnimator: function () {
  5243.             if (this._r782) return;
  5244.             // if (!this.isAttached) return;
  5245.             if (!this._runnerAE) {
  5246.               /** @type {HTMLElement | null} */
  5247.               const aElement = (this.$ || 0).container;
  5248.               if (!aElement) return console.warn("this.$.container is undefined");
  5249.               const da = this.data;
  5250.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  5251.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  5252.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  5253.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  5254.  
  5255.               // if (!this.__tickerBackgroundInitialChecked__) {
  5256.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  5257.               //   console.log('__tickerBackgroundInitialChecked__')
  5258.               //   this._checkTickerBackgroundChanged();
  5259.               // }
  5260.  
  5261.               aElement.style.setProperty('--ticker-c1', c1);
  5262.               aElement.style.setProperty('--ticker-c2', c2);
  5263.               aElement.classList.add(runTickerClassName);
  5264.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  5265.               // this._aeStartV = this.countdownMs;
  5266.               // this._aeStartT = this.countdownDurationMs;
  5267.               if (!(p >= 0 && p <= 100)) {
  5268.                 console.warn('incorrect time ratio', p);
  5269.               } else {
  5270.                 /*
  5271.                 const u0 = p.toFixed(4) + '%';
  5272.                 this._runnerAE = animate.call(aElement,
  5273.                   [
  5274.                     { '--ticker-rtime': u0 },
  5275.                     { '--ticker-rtime': '0%' }
  5276.                   ]
  5277.                   ,
  5278.                   {
  5279.                     fill: "forwards",
  5280.                     duration: this.countdownMs,
  5281.                     easing: "linear"
  5282.                   }
  5283.                 );
  5284.                 */
  5285.  
  5286.                 let timingFn = 'linear';
  5287.  
  5288.                 const totalDuration = this.countdownDurationMs;
  5289.  
  5290.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  5291.  
  5292.                   // @ step timing [min. 0.2%]
  5293.                   let stepInterval = 0.2; // unit: %
  5294.                   if (totalDuration > 400000) stepInterval = 0.2;
  5295.                   else if (totalDuration > 200000) stepInterval = 0.5;
  5296.                   else if (totalDuration > 100000) stepInterval = 1;
  5297.                   else if (totalDuration > 50000) stepInterval = 2;
  5298.                   else if (totalDuration > 25000) stepInterval = 5;
  5299.                   else stepInterval = 5;
  5300.  
  5301.                   let numOfSteps = Math.round(100 / stepInterval);
  5302.  
  5303.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  5304.                   if (numOfSteps < 5) numOfSteps = 5;
  5305.  
  5306.                   timingFn = `steps(${numOfSteps}, end)`;
  5307.  
  5308.                 }
  5309.  
  5310.  
  5311.                 /** @type {Animation} */
  5312.                 const ae = animate.call(aElement,
  5313.                   [
  5314.                     { '--ticker-rtime': '100%' },
  5315.                     { '--ticker-rtime': '0%' }
  5316.                   ]
  5317.                   ,
  5318.                   {
  5319.                     fill: "forwards",
  5320.                     duration: totalDuration,
  5321.                     easing: timingFn
  5322.                   }
  5323.                 );
  5324.  
  5325.                 this._runnerAE = ae;
  5326.  
  5327.                 ae.onfinish = (event) => {
  5328.                   this.onfinish = null;
  5329.                   if (this._runnerAE !== ae) return;
  5330.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  5331.                     this._aeFinished(event);
  5332.                   }
  5333.                 }
  5334.  
  5335.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  5336.  
  5337.                 if (bq >= 0 && bq <= totalDuration) {
  5338.  
  5339.                   if (bq > totalDuration - 1) {
  5340.                     ae.currentTime = bq;
  5341.                     // setTimeout(() => {
  5342.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  5343.                     // }, 1);
  5344.                   } else {
  5345.                     ae.currentTime = bq;
  5346.                   }
  5347.                 } else {
  5348.                   console.warn('Error on setting _runnerAE.currentTime!');
  5349.                 }
  5350.  
  5351.  
  5352.                 aeConstructor = ae.constructor; // constructor is from iframe
  5353.                 return ae;
  5354.               }
  5355.             } else {
  5356.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  5357.               // assume just time update
  5358.               const ae = this._runnerAE;
  5359.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  5360.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  5361.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  5362.               if (!(p >= 0 && p <= 100)) {
  5363.                 console.warn('incorrect time ratio', p);
  5364.               } else {
  5365.                 // let u0 = p.toFixed(4) + '%'
  5366.                 /*
  5367.                 ae.effect.setKeyframes([
  5368.                   { '--ticker-rtime': u0 },
  5369.                   { '--ticker-rtime': '0%' }
  5370.                 ]);
  5371.                 ae.effect.updateTiming({ duration: this.countdownMs });
  5372.                 */
  5373.                 // ae.currentTime = 0;
  5374.  
  5375.  
  5376.  
  5377.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  5378.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  5379.  
  5380.                   this._runnerAE.currentTime = bq
  5381.                 } else {
  5382.                   console.warn('Error on setting _runnerAE.currentTime!');
  5383.                 }
  5384.  
  5385.  
  5386.                 ae.play();
  5387.                 return ae;
  5388.               }
  5389.             }
  5390.           },
  5391.  
  5392.           _aeFinished: function (event) {
  5393.  
  5394.             if (this._r782) return;
  5395.  
  5396.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5397.               this._throwOut();
  5398.               return;
  5399.             }
  5400.  
  5401.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  5402.  
  5403.             let lc = window.performance.now();
  5404.             this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  5405.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  5406.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  5407.             if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  5408.  
  5409.             this.countdownMs = 0;
  5410.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  5411.  
  5412.             if (this.isAttached) {
  5413.               let fastRemoved = false;
  5414.               if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  5415.                 // no animation if the video page is switched from background to foreground
  5416.                 // this.hostElement.style.display = 'none';
  5417.                 const id = (this.data || 0).id || 0;
  5418.                 if (!id) this.data = { id: 1 }
  5419.                 try {
  5420.                   this.requestRemoval();
  5421.                   fastRemoved = true;
  5422.                 } catch (e) {
  5423.  
  5424.                 }
  5425.               }
  5426.  
  5427.               if (!fastRemoved) {
  5428.                 "auto" === this.hostElement.style.width && this.setContainerWidth();
  5429.                 this.slideDown();
  5430.               }
  5431.             }
  5432.  
  5433.  
  5434.  
  5435.           },
  5436.  
  5437.  
  5438.           /** @type {()} */
  5439.           _throwOut: function () {
  5440.             this._r782 = 1;
  5441.             Promise.resolve().then(() => {
  5442.               if (typeof this.requestRemoval === 'function') {
  5443.                 const id = (this.data || 0).id;
  5444.                 if (!id) this.data = { id: 1 };
  5445.                 try {
  5446.                   this.requestRemoval();
  5447.                 } catch (e) { }
  5448.               }
  5449.               this.detached();
  5450.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  5451.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  5452.               if (this.__dataReady === true) this.__dataReady = false;
  5453.               this.data = null;
  5454.               this.countdownMs = 0;
  5455.               this.lastCountdownTimeMs = null;
  5456.               const hm = this.hostElement || this;
  5457.               if (hm.parentNode) hm.remove();
  5458.               for (let t; t = hm.firstChild;) t.remove();
  5459.             }).catch(e => {
  5460.               console.warn(e);
  5461.             });
  5462.           },
  5463.  
  5464.  
  5465.           // doTimerFnModification
  5466.  
  5467.  
  5468.           /** @type {(a, b)} */
  5469.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  5470.             try {
  5471.               // a.durationSec [s] => countdownMs [ms]
  5472.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  5473.               // lastCountdownTimeMs => raf ongoing
  5474.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  5475.  
  5476.               if (this._r782) return;
  5477.  
  5478.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5479.                 this._throwOut();
  5480.                 return;
  5481.               }
  5482.  
  5483.               // TimerFnModA
  5484.  
  5485.               b = void 0 === b ? 0 : b;
  5486.               if (void 0 !== a) {
  5487.  
  5488.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  5489.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  5490.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  5491.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  5492.                   this.rafId = 1
  5493.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  5494.                   this.detlaSincePausedSecs = 0;
  5495.                   const ae = this._makeAnimator();
  5496.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  5497.  
  5498.                   // if (playerProgressChangedArg1 === null) {
  5499.                   //   console.log('startCountdownForTimerFnModA', this.data)
  5500.                   // }
  5501.  
  5502.                   if (isPlayProgressTriggered && this.isAnimationPaused !== true && this.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__) {
  5503.  
  5504.  
  5505.  
  5506.  
  5507.                     this.playerProgressSec = lastPlayerProgress > 0 ? lastPlayerProgress : 0; // save the progress first
  5508.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  5509.                     this.detlaSincePausedSecs = 0;
  5510.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  5511.  
  5512.                     relayPromise = relayPromise || new PromiseExternal();
  5513.  
  5514.                     relayPromise.then(() => {
  5515.                       if (this.isAttached === true && this.countdownDurationMs > 0 && this.isAnimationPaused === true && this.isReplayPaused !== true) {
  5516.                         this.isAnimationPaused = false;
  5517.                       }
  5518.                     });
  5519.  
  5520.  
  5521.                   }
  5522.  
  5523.  
  5524.  
  5525.                 }
  5526.               }
  5527.  
  5528.             } catch (e) {
  5529.               console.warn(e);
  5530.             }
  5531.  
  5532.           },
  5533.  
  5534.  
  5535.  
  5536.           /** @type {(a, b)} */
  5537.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  5538.             try {
  5539.               // a.durationSec [s] => countdownMs [ms]
  5540.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  5541.               // lastCountdownTimeMs => raf ongoing
  5542.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  5543.  
  5544.               if (this._r782) return;
  5545.  
  5546.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5547.                 this._throwOut();
  5548.                 return;
  5549.               }
  5550.  
  5551.               // TimerFnModT
  5552.  
  5553.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  5554.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5555.               b = void 0 === b ? 0 : b;
  5556.               void 0 !== a && (this.countdownMs = 1E3 * a,
  5557.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  5558.                 this.ratio = 1,
  5559.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  5560.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  5561.  
  5562.             } catch (e) {
  5563.               console.warn(e);
  5564.             }
  5565.  
  5566.           },
  5567.  
  5568.  
  5569.           /** @type {(a,)} */
  5570.           updateTimeoutForTimerFnModA: function (a) {
  5571.  
  5572.             try {
  5573.  
  5574.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5575.  
  5576.               if (this._r782) return;
  5577.  
  5578.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5579.                 this._throwOut();
  5580.                 return;
  5581.               }
  5582.  
  5583.               // TimerFnModA
  5584.  
  5585.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  5586.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  5587.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  5588.               }
  5589.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  5590.               if (this.isAttached && this.countdownMs) {
  5591.                 this.lastCountdownTimeMs = a
  5592.                 const ae = this._makeAnimator(); // request raf
  5593.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  5594.               } else {
  5595.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  5596.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  5597.                     this.slideDown()));
  5598.               }
  5599.  
  5600.             } catch (e) {
  5601.               console.warn(e);
  5602.             }
  5603.  
  5604.  
  5605.           },
  5606.  
  5607.           /** @type {(a,)} */
  5608.           updateTimeoutForTimerFnModT: function (a) {
  5609.  
  5610.             try {
  5611.  
  5612.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5613.  
  5614.               if (this._r782) return;
  5615.  
  5616.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5617.                 this._throwOut();
  5618.                 return;
  5619.               }
  5620.  
  5621.               // TimerFnModT
  5622.  
  5623.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  5624.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5625.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  5626.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  5627.               }
  5628.               // console.log(703, this.countdownMs)
  5629.               this.ratio = this.countdownMs / this.countdownDurationMs;
  5630.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  5631.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  5632.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  5633.                     this.slideDown()))
  5634.  
  5635.  
  5636.             } catch (e) {
  5637.               console.warn(e);
  5638.             }
  5639.           },
  5640.  
  5641.           /** @type {(a,b)} */
  5642.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  5643.  
  5644.             if (this._r782) return;
  5645.  
  5646.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5647.               this._throwOut();
  5648.               return;
  5649.             }
  5650.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  5651.             this._forceNoDetlaSincePausedSecs783 = 0;
  5652.  
  5653.             Promise.resolve().then(() => {
  5654.  
  5655.               if (a) {
  5656.  
  5657.                 if (this._runnerAE && this._runnerAE.playState === 'running') {
  5658.  
  5659.                   this._runnerAE.pause()
  5660.                   let lc = window.performance.now();
  5661.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  5662.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  5663.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  5664.                 }
  5665.  
  5666.               } else if (!a && b) {
  5667.  
  5668.  
  5669.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  5670.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  5671.                 this.detlaSincePausedSecs = 0;
  5672.                 this.updateTimeout(a);
  5673.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  5674.  
  5675.               }
  5676.  
  5677.  
  5678.             }).catch(e => {
  5679.               console.log(e);
  5680.             });
  5681.  
  5682.  
  5683.  
  5684.           },
  5685.  
  5686.  
  5687.           /** @type {(a,b)} */
  5688.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  5689.  
  5690.             if (this._r782) return;
  5691.  
  5692.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5693.               this._throwOut();
  5694.               return;
  5695.             }
  5696.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  5697.             this._forceNoDetlaSincePausedSecs783 = 0;
  5698.  
  5699.             Promise.resolve().then(() => {
  5700.  
  5701.               // TimerFnModT
  5702.  
  5703.               // ez++;
  5704.               // if(ez> 1e9) ez=9;
  5705.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5706.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  5707.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  5708.                   this.detlaSincePausedSecs = 0),
  5709.                 this.boundUpdateTimeout37_(a),
  5710.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  5711.  
  5712.  
  5713.             }).catch(e => {
  5714.               console.log(e);
  5715.             });
  5716.  
  5717.  
  5718.  
  5719.           },
  5720.  
  5721.  
  5722.           /** @type {(a,b)} */
  5723.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  5724.  
  5725.             if (this._r782) return;
  5726.  
  5727.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5728.               this._throwOut();
  5729.               return;
  5730.             }
  5731.  
  5732.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  5733.  
  5734.           },
  5735.  
  5736.  
  5737.  
  5738.           /** @type {()} */
  5739.           handlePauseReplayForPlaybackProgressState: function () {
  5740.             if (!playerEventsByIframeRelay) return this.handlePauseReplay66.apply(this, arguments);
  5741.  
  5742.             if (onPlayStateChangePromise) {
  5743.  
  5744.               if (this.rtu > 1e9) this.rtu = this.rtu % 1e4;
  5745.               const tid = ++this.rtu;
  5746.  
  5747.               onPlayStateChangePromise.then(() => {
  5748.                 if (tid === this.rtu && !onPlayStateChangePromise && typeof this.handlePauseReplay === 'function') this.handlePauseReplay.apply(this, arguments);
  5749.                 // this.handlePauseReplay can be undefined if it is memory cleaned
  5750.               });
  5751.  
  5752.               return;
  5753.             }
  5754.  
  5755.             if (playerState !== 2) return;
  5756.             if (this.isAttached) {
  5757.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  5758.               const tid = ++this.rtk;
  5759.               const tc = relayCount;
  5760.               foregroundPromiseFn().then(() => {
  5761.                 if (tid === this.rtk && tc === relayCount && playerState === 2 && _playerState === playerState) {
  5762.                   this.handlePauseReplay66();
  5763.                 }
  5764.  
  5765.               })
  5766.             }
  5767.           },
  5768.  
  5769.           /** @type {()} */
  5770.           handleResumeReplayForPlaybackProgressState: function () {
  5771.             if (!playerEventsByIframeRelay) return this.handleResumeReplay66.apply(this, arguments);
  5772.  
  5773.  
  5774.             if (onPlayStateChangePromise) {
  5775.  
  5776.               if (this.rtv > 1e9) this.rtv = this.rtv % 1e4;
  5777.               const tid = ++this.rtv;
  5778.  
  5779.               onPlayStateChangePromise.then(() => {
  5780.                 if (tid === this.rtv && !onPlayStateChangePromise && typeof this.handleResumeReplay === 'function') this.handleResumeReplay.apply(this, arguments);
  5781.                 // this.handleResumeReplay can be undefined if it is memory cleaned
  5782.               });
  5783.  
  5784.               return;
  5785.             }
  5786.  
  5787.  
  5788.             if (playerState !== 1) return;
  5789.             if (this.isAttached) {
  5790.               const tc = relayCount;
  5791.  
  5792.               relayPromise = relayPromise || new PromiseExternal();
  5793.               relayPromise.then(() => {
  5794.                 if (relayCount > tc && playerState === 1 && _playerState === playerState) {
  5795.                   this.handleResumeReplay66();
  5796.                 }
  5797.               });
  5798.             }
  5799.           },
  5800.  
  5801.           /** @type {(a,)} */
  5802.           handleReplayProgressForPlaybackProgressState: function (a) {
  5803.             if (this.isAttached) {
  5804.               const tid = ++this.rtk;
  5805.               foregroundPromiseFn().then(() => {
  5806.                 if (tid === this.rtk) {
  5807.                   this.handleReplayProgress66(a);
  5808.                 }
  5809.               })
  5810.             }
  5811.           }
  5812.  
  5813.  
  5814.         }
  5815.  
  5816.  
  5817.         for (const tag of tagsItemRenderer) { // ##tag##
  5818.           const dummy = document.createElement(tag);
  5819.  
  5820.           const cProto = getProto(dummy);
  5821.           if (!cProto || !cProto.attached) {
  5822.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5823.             continue;
  5824.           }
  5825.  
  5826.           if (FIX_MEMORY_LEAKAGE_TICKER_ACTIONMAP && typeof cProto.detached582MemoryLeak !== 'function' && typeof cProto.detached === 'function') {
  5827.             cProto.detached582MemoryLeak = cProto.detached;
  5828.             cProto.detached = cProto.detachedForTickerInit;
  5829.           }
  5830.  
  5831.           cProto.attached77 = cProto.attached;
  5832.  
  5833.           cProto.attached = dProto.attachedForTickerInit;
  5834.  
  5835.           let rafHackState = 0;
  5836.  
  5837.           let isTimingFunctionHackable = false;
  5838.  
  5839.           let urt = 0;
  5840.  
  5841.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  5842.  
  5843.             // console.log('startCountdown', typeof cProto.startCountdown)
  5844.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  5845.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  5846.  
  5847.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  5848.  
  5849.           } else {
  5850.             console.log("ATTEMPT_ANIMATED_TICKER_BACKGROUND", ` ${tag}`, "Skip Timing Function Modification");
  5851.             continue;
  5852.           }
  5853.  
  5854.  
  5855.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  5856.  
  5857.             // cancelable - this.rafId < isAnimationPausedChanged >
  5858.             rafHackState = 1;
  5859.  
  5860.             if (isTimingFunctionHackable) {
  5861.               rafHackState = 2;
  5862.  
  5863.             } else {
  5864.               rafHackState = 4;
  5865.             }
  5866.  
  5867.           }
  5868.  
  5869.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  5870.  
  5871.           const doRAFHack = rafHackState === 2;
  5872.  
  5873.           cProto._throwOut = dProto._throwOut;
  5874.  
  5875.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  5876.  
  5877.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  5878.  
  5879.  
  5880.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  5881.  
  5882.  
  5883.  
  5884.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  5885.               urt++;
  5886.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  5887.             } else {
  5888.               console.log('Error for setting cProto.handlePauseReplay', tag)
  5889.             }
  5890.  
  5891.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  5892.               urt++;
  5893.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  5894.             } else {
  5895.               console.log('Error for setting cProto.handleResumeReplay', tag)
  5896.             }
  5897.  
  5898.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  5899.               urt++;
  5900.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  5901.             } else {
  5902.               console.log('Error for setting cProto.handleReplayProgress', tag)
  5903.             }
  5904.  
  5905.  
  5906.  
  5907.           }
  5908.  
  5909.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  5910.           cProto.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__ = ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED;
  5911.  
  5912.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  5913.  
  5914.             cProto.rtk = 0;
  5915.             cProto.rtu = 0;
  5916.             cProto.rtv = 0;
  5917.  
  5918.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  5919.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  5920.  
  5921.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  5922.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  5923.  
  5924.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  5925.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  5926.  
  5927.           }
  5928.  
  5929.           const doTimerFnModification = (doRAFHack || doAnimator);
  5930.  
  5931.           if (doAnimator && windowShownAt < 0) {
  5932.             windowShownAt = 0;
  5933.             setupEventForWindowShownAt();
  5934.           }
  5935.  
  5936.           if (doTimerFnModification) {
  5937.  
  5938.             cProto.startCountdown = (
  5939.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  5940.             );
  5941.  
  5942.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5943.             cProto.updateTimeout = (
  5944.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  5945.             );
  5946.  
  5947.  
  5948.             // let ez = 0;
  5949.             cProto.isAnimationPausedChanged = (
  5950.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  5951.             );
  5952.  
  5953.           }
  5954.  
  5955.           if (doAnimator) {
  5956.  
  5957.             const s = fnIntegrity(cProto.computeContainerStyle);
  5958.  
  5959.             if (s === '2.46.29') {
  5960.               // f.computeContainerStyle = function(a, b) {
  5961.               //     if (!a)
  5962.               //         return $h(kmb);
  5963.               //     var c = this.colorFromDecimal(a.startBackgroundColor);
  5964.               //     a = this.colorFromDecimal(a.endBackgroundColor);
  5965.               //     b = 100 * b + "%";
  5966.               //     return $h(lmb, c, c, b, a, b, a)
  5967.               // }
  5968.             } else if (s === '2.44.29' || s === '2.81.31') {
  5969.  
  5970.               //     var ofb = da([""])
  5971.               //         pfb = da("background:linear-gradient(90deg, {,{ {,{ {,{);".split("{"))
  5972.  
  5973.               // f.computeContainerStyle = function(a, b) {
  5974.               //     if (!a)
  5975.               //         return pi(ofb);
  5976.               //     var c = this.colorFromDecimal(a.startBackgroundColor);
  5977.               //     a = this.colorFromDecimal(a.endBackgroundColor);
  5978.               //     b = 100 * b + "%";
  5979.               //     return pi(pfb, c, c, b, a, b, a)
  5980.               // }
  5981.  
  5982.             } else {
  5983.               assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.46.29'));
  5984.             }
  5985.  
  5986.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  5987.  
  5988.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  5989.  
  5990.           }
  5991.  
  5992.           if (doTimerFnModification === true) hasTimerModified = true;
  5993.  
  5994.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  5995.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  5996.           }
  5997.  
  5998.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  5999.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  6000.           }
  6001.  
  6002.         }
  6003.  
  6004.         const selector = tags.join(', ');
  6005.         const elements = document.querySelectorAll(selector);
  6006.         if (elements.length >= 1) {
  6007.           for (const elm of elements) {
  6008.             if (insp(elm).isAttached === true) {
  6009.               fpTicker(elm);
  6010.             }
  6011.           }
  6012.         }
  6013.  
  6014.         console.log("[End]");
  6015.         console.groupEnd();
  6016.  
  6017.  
  6018.       }).catch(console.warn);
  6019.  
  6020.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  6021.  
  6022.         mightFirstCheckOnYtInit();
  6023.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  6024.         console.log("[Begin]");
  6025.         (() => {
  6026.  
  6027.           /* pending!!
  6028.  
  6029.           handleLiveChatAction
  6030.  
  6031.           removeTickerItemById
  6032.  
  6033.           _itemsChanged
  6034.           itemsChanged
  6035.  
  6036.           handleMarkChatItemAsDeletedAction
  6037.           handleMarkChatItemsByAuthorAsDeletedAction
  6038.           handleRemoveChatItemByAuthorAction
  6039.  
  6040.  
  6041.           */
  6042.  
  6043.           const tag = "yt-live-chat-ticker-renderer"
  6044.           const dummy = document.createElement(tag);
  6045.  
  6046.           const cProto = getProto(dummy);
  6047.           if (!cProto || !cProto.attached) {
  6048.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6049.             return;
  6050.           }
  6051.  
  6052.           const do_amend_ticker_handleLiveChatAction = AMEND_TICKER_handleLiveChatAction && !AMEND_TICKER_handleLiveChatAction_v3
  6053.             && typeof cProto.handleLiveChatAction === 'function' && !cProto.handleLiveChatAction45 && cProto.handleLiveChatAction.length === 1
  6054.             && typeof cProto.handleLiveChatActions === 'function' && !cProto.handleLiveChatActions45 && cProto.handleLiveChatActions.length === 1
  6055.             && typeof cProto.unshift === 'function' && cProto.unshift.length === 1
  6056.             && typeof cProto.handleMarkChatItemAsDeletedAction === 'function' && cProto.handleMarkChatItemAsDeletedAction.length === 1
  6057.             && typeof cProto.removeTickerItemById === 'function' && cProto.removeTickerItemById.length === 1
  6058.             && typeof cProto.handleMarkChatItemsByAuthorAsDeletedAction === 'function' && cProto.handleMarkChatItemsByAuthorAsDeletedAction.length === 1
  6059.             && typeof cProto.handleRemoveChatItemByAuthorAction === 'function' && cProto.handleRemoveChatItemByAuthorAction.length === 1
  6060.             ;
  6061.  
  6062.           console.log('do_amend_ticker_handleLiveChatAction', fnIntegrity(cProto.handleLiveChatAction), fnIntegrity(cProto.handleLiveChatActions))
  6063.  
  6064.  
  6065.           if (do_amend_ticker_handleLiveChatAction) {
  6066.  
  6067.  
  6068.             if (fnIntegrity(cProto.handleLiveChatActions) === '1.23.12') {
  6069.  
  6070.               console.log(`handleLiveChatActions`, 'modified');
  6071.  
  6072.               cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  6073.  
  6074.               cProto.handleLiveChatActions = function (a) {
  6075.                 /**
  6076.                  *
  6077.                     f.handleLiveChatActions = function(a) {
  6078.                         a.length && (a.forEach(this.handleLiveChatAction, this),
  6079.                         this.updateHighlightedItem(),
  6080.                         this.shouldAnimateIn = !0)
  6081.                     }
  6082.                  *
  6083.                  */
  6084.                 const len = a.length;
  6085.                 if (len) {
  6086.                   const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  6087.  
  6088.                   if (FIX_BATCH_TICKER_ORDER && len >= 2) {
  6089.  
  6090.                     // Primarily for the initial batch, this is due to replayBuffer._back.
  6091.                     const entries = [];
  6092.                     const entriesI = [];
  6093.                     for (let i = 0; i < len; i++) {
  6094.                       const item = ((a[i] || 0).addLiveChatTickerItemAction || 0).item || 0;
  6095.                       const timestampUsec = item ? parseInt(getTimestampUsec(item[firstObjectKey(item)]), 10) : 0;
  6096.                       if (timestampUsec > 0) {
  6097.                         entriesI.push(i);
  6098.                         binaryInsert(entries, { e: a[i], timestampUsec }, (a, b) => {
  6099.                           const diff = a.timestampUsec - b.timestampUsec;
  6100.                           return diff > 0.1 ? 1 : diff < -0.1 ? -1 : 0;
  6101.                         });
  6102.                       }
  6103.                     }
  6104.                     const mLen = entries.length;
  6105.                     if (mLen >= 2) {
  6106.                       for (let j = 0; j < mLen; j++) {
  6107.                         a[entriesI[j]] = entries[j].e;
  6108.                       }
  6109.                     }
  6110.                     entries.length = 0;
  6111.                     entriesI.length = 0;
  6112.                   }
  6113.                   for (const action of a) {
  6114.                     action.__batchId45__ = batchToken;
  6115.                     this.handleLiveChatAction(action);
  6116.                   }
  6117.                 }
  6118.               }
  6119.  
  6120.  
  6121.             }
  6122.  
  6123.  
  6124.             console.log(`handleLiveChatAction`, 'modified');
  6125.  
  6126.             const cacheChatActions = new LimitedSizeSet(16);
  6127.  
  6128.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  6129.  
  6130.             cProto.handleLiveChatAction = function (a) {
  6131.  
  6132.               const key = firstObjectKey(a);
  6133.               if (!key) return;
  6134.  
  6135.               const val = a[key];
  6136.               let itemKey = '';
  6137.               let itemId = '';
  6138.               const valItem = val ? val.item : null;
  6139.               if (valItem) {
  6140.                 itemKey = firstObjectKey(valItem);
  6141.                 if (itemKey) {
  6142.                   const itemVal = valItem[itemKey];
  6143.                   itemId = itemVal ? itemVal.id : '';
  6144.                   if (itemId) {
  6145.                     const cacheKey = `${key}.${itemKey}::${itemId}`;
  6146.                     if (key === 'addChatItemAction' && itemId) return; // no need
  6147.                     if (cacheChatActions.has(cacheKey)) {
  6148.                       console.log('handleLiveChatAction Repeated Item', cacheKey);
  6149.                       return;
  6150.                     } else {
  6151.                       cacheChatActions.add(cacheKey);
  6152.                     }
  6153.                   }
  6154.                 }
  6155.               }
  6156.               return this.handleLiveChatAction45(a);
  6157.             };
  6158.  
  6159.             console.log("AMEND_TICKER_handleLiveChatAction - OK (v2)");
  6160.  
  6161.           } else if (0 && do_amend_ticker_handleLiveChatAction
  6162.             && '|1.63.48|1.64.48|'.includes(`|${fnIntegrity(cProto.handleLiveChatAction)}|`)
  6163.             && fnIntegrity(cProto.handleLiveChatActions) === '1.23.12'
  6164.           ) {
  6165.  
  6166.             cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  6167.  
  6168.             cProto.handleLiveChatActions = function (a) {
  6169.               /**
  6170.                *
  6171.                   f.handleLiveChatActions = function(a) {
  6172.                       a.length && (a.forEach(this.handleLiveChatAction, this),
  6173.                       this.updateHighlightedItem(),
  6174.                       this.shouldAnimateIn = !0)
  6175.                   }
  6176.                *
  6177.                */
  6178.  
  6179.               if (a.length) {
  6180.                 const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  6181.                 const len = a.length;
  6182.                 if (FIX_BATCH_TICKER_ORDER && len >= 2) {
  6183.                   // Primarily for the initial batch, this is due to replayBuffer._back.
  6184.                   const entries = [];
  6185.                   const entriesI = [];
  6186.                   for (let i = 0; i < len; i++) {
  6187.                     const item = ((a[i] || 0).addLiveChatTickerItemAction || 0).item || 0;
  6188.                     if (item) {
  6189.                       const itemRendererKey = firstObjectKey(item);
  6190.                       const itemRenderer = item[itemRendererKey];
  6191.                       if (itemRenderer) {
  6192.                         let timestampUsec = getTimestampUsec(itemRenderer);
  6193.                         if (timestampUsec !== null) {
  6194.                           timestampUsec = parseInt(timestampUsec, 10);
  6195.                           if (timestampUsec > 0) {
  6196.                             entriesI.push(i);
  6197.                             entries.push({ e: a[i], timestampUsec })
  6198.                           }
  6199.                         }
  6200.                       }
  6201.                     }
  6202.                   }
  6203.                   const mLen = entries.length;
  6204.                   if (mLen >= 2) {
  6205.                     entries.sort((a, b) => {
  6206.                       const diff = a.timestampUsec - b.timestampUsec;
  6207.                       return diff > 0.1 ? 1 : diff < -0.1 ? -1 : 0;
  6208.                     });
  6209.                     for (let j = 0; j < mLen; j++) {
  6210.                       const i = entriesI[j];
  6211.                       a[i] = entries[j].e;
  6212.                     }
  6213.                   }
  6214.                   entries.length = 0;
  6215.                   entriesI.length = 0;
  6216.                 }
  6217.                 for (const action of a) {
  6218.                   action.__batchId45__ = batchToken;
  6219.                   this.handleLiveChatAction(action);
  6220.                 }
  6221.               }
  6222.             }
  6223.  
  6224.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  6225.  
  6226.             cProto._nszlv_ = 0;
  6227.             cProto._stackedLCAs_ = null;
  6228.             cProto._lastAddItem_ = null;
  6229.             cProto._lastAddItemInStack_ = false;
  6230.             cProto.handleLiveChatAction = function (a) {
  6231.  
  6232.               /**
  6233.                *
  6234.                *
  6235.                 f.handleLiveChatAction = function(a) {
  6236.                     var b = C(a, xO)
  6237.                       , c = C(a, yO)
  6238.                       , d = C(a, o1a)
  6239.                       , e = C(a, p1a);
  6240.                     a = C(a, A1a);
  6241.                     b ? this.unshift("items", b.item) : c ? this.handleMarkChatItemAsDeletedAction(c) : d ? this.removeTickerItemById(d.targetItemId) : e ? this.handleMarkChatItemsByAuthorAsDeletedAction(e) : a && this.handleRemoveChatItemByAuthorAction(a)
  6242.                 }
  6243.                *
  6244.                */
  6245.  
  6246.               // return this.handleLiveChatAction45(a)
  6247.               const { addChatItemAction, addLiveChatTickerItemAction, markChatItemAsDeletedAction,
  6248.                 removeChatItemAction, markChatItemsByAuthorAsDeletedAction, removeChatItemByAuthorAction, __batchId45__ } = a
  6249.  
  6250.               if (addChatItemAction) return;
  6251.               const d = Date.now();
  6252.  
  6253.               if (this._stackedLCAs_ === null) this._stackedLCAs_ = [];
  6254.               const stackArr = this._stackedLCAs_;
  6255.               let newStackEntry = null;
  6256.               if (addLiveChatTickerItemAction) {
  6257.                 let isDuplicated = false;
  6258.  
  6259.                 const newItem = addLiveChatTickerItemAction.item;
  6260.                 const tickerType = firstObjectKey(newItem);
  6261.                 if (!tickerType) return;
  6262.                 const tickerItem = newItem[tickerType];
  6263.                 const tickerId = tickerItem.id;
  6264.                 if (!tickerId) return;
  6265.  
  6266.                 if (this._lastAddItem_ && this._lastAddItem_.id === tickerId) {
  6267.                   let prevTickerItem = null;
  6268.                   if (this._lastAddItemInStack_) {
  6269.                     const entry = stackArr[stackArr.length - 1]; // only consider the last entry
  6270.                     if (entry && entry.action === 'addItem') {
  6271.                       prevTickerItem = entry.data; // only consider the first item;
  6272.                     }
  6273.                   } else {
  6274.                     prevTickerItem = this.items[0]; // only consider the first item;
  6275.                   }
  6276.                   if (prevTickerItem && prevTickerItem[tickerType]) {
  6277.                     if (prevTickerItem[tickerType].id === tickerId) {
  6278.                       isDuplicated = true;
  6279.                     }
  6280.                   }
  6281.                 }
  6282.                 if (!isDuplicated) {
  6283.                   this._lastAddItem_ = tickerItem;
  6284.                   this._lastAddItemInStack_ = true;
  6285.                   // console.log('newItem', newItem)
  6286.  
  6287.                   const item = newItem;
  6288.                   const key = firstObjectKey(item);
  6289.                   if (key) {
  6290.                     const itemRenderer = item[key] || 0;
  6291.                     if (itemRenderer.fullDurationSec > 0) {
  6292.                       itemRenderer.__actionAt__ = d;
  6293.                     }
  6294.                   }
  6295.  
  6296.                   newStackEntry = { action: 'addItem', data: newItem };
  6297.  
  6298.                 } else {
  6299.                   console.log('handleLiveChatAction Repeated Item', tickerItem.id, tickerItem); // happen in both live and playback. Reason Unknown.
  6300.                   return;
  6301.                 }
  6302.  
  6303.               } else {
  6304.                 markChatItemAsDeletedAction && (newStackEntry = { action: 'mcItemD', data: markChatItemAsDeletedAction });
  6305.                 removeChatItemAction && (newStackEntry = { action: 'removeItemById', data: removeChatItemAction.targetId });
  6306.                 markChatItemsByAuthorAsDeletedAction && (newStackEntry = { action: 'mcItemAD', data: markChatItemsByAuthorAsDeletedAction });
  6307.                 removeChatItemByAuthorAction && (newStackEntry = { action: 'removeItemA', data: removeChatItemByAuthorAction })
  6308.               }
  6309.  
  6310.  
  6311.               if (!newStackEntry) return;
  6312.               stackArr.push(newStackEntry);
  6313.  
  6314.  
  6315.               this._nszlv_++;
  6316.               if (this._nszlv_ > 1e9) this._nszlv_ = 9;
  6317.               const tid = this._nszlv_;
  6318.  
  6319.               newStackEntry.__batchId45__ = __batchId45__ || '';
  6320.               newStackEntry.dateTime = Date.now();
  6321.  
  6322.  
  6323.               foregroundPromiseFn().then(() => {
  6324.  
  6325.                 if (tid !== this._nszlv_) return;
  6326.                 const dateNow = Date.now(); // time difference to shift animation start time shall be considered. (pending)
  6327.                 const stackArr = this._stackedLCAs_.slice(0);
  6328.                 this._stackedLCAs_.length = 0;
  6329.                 this._lastAddItemInStack_ = false;
  6330.                 let lastDateTime = 0;
  6331.                 let prevBatchId = '';
  6332.                 const addItems = [];
  6333.                 // const previousShouldAnimateIn = this.shouldAnimateIn;
  6334.  
  6335.                 const addItemsFx = () => {
  6336.  
  6337.                   if (addItems.length >= 1) {
  6338.                     const eArr = addItems.slice(0);
  6339.                     addItems.length = 0;
  6340.                     if (ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME) {
  6341.  
  6342.                       const arr = []; // size of arr <= size of eArr
  6343.                       const d = Date.now();
  6344.                       for (const item of eArr) {
  6345.                         const key = firstObjectKey(item);
  6346.                         if (key) {
  6347.  
  6348.  
  6349.                           const itemRenderer = item[key] || 0;
  6350.                           const { durationSec, fullDurationSec, __actionAt__ } = itemRenderer;
  6351.                           if (__actionAt__ > 0 && durationSec > 0 && fullDurationSec > 0) {
  6352.  
  6353.  
  6354.                             const offset = d - __actionAt__;
  6355.                             if (offset > 0 && typeof durationSec === 'number' && typeof fullDurationSec === 'number' && fullDurationSec >= durationSec) {
  6356.                               const adjustedDurationSec = durationSec - Math.floor(offset / 1000);
  6357.                               if (adjustedDurationSec < durationSec) { // prevent NaN
  6358.                                 // console.log('adjustedDurationSec', adjustedDurationSec);
  6359.                                 if (adjustedDurationSec > 0) {
  6360.                                   // console.log('offset Sec', Math.floor(offset / 1000));
  6361.                                   itemRenderer.durationSec = adjustedDurationSec;
  6362.                                 } else {
  6363.                                   // if adjustedDurationSec equal 0 or invalid
  6364.                                   continue; // skip adding
  6365.                                 }
  6366.                               }
  6367.  
  6368.                             }
  6369.  
  6370.                           }
  6371.  
  6372.                           if (fullDurationSec > 0 && durationSec < 1) continue; // fallback check
  6373.  
  6374.  
  6375.  
  6376.                         }
  6377.                         arr.push(item)
  6378.                         // arr.unshift(item);
  6379.                       }
  6380.  
  6381.  
  6382.                       // console.log(arr.slice(0))
  6383.                       this.unshift("items", ...arr);
  6384.                     } else {
  6385.                       this.unshift("items", ...eArr);
  6386.                     }
  6387.                   }
  6388.                 }
  6389.  
  6390.                 for (const entry of stackArr) {
  6391.  
  6392.                   const { action, data, dateTime, __batchId45__ } = entry;
  6393.  
  6394.                   const finishLastAction = (
  6395.                     (prevBatchId !== __batchId45__ && prevBatchId)
  6396.                     || (dateNow - lastDateTime >= 1000 && dateNow - dateTime < 1000)
  6397.                   );
  6398.  
  6399.                   const addPrevItems = addItems.length >= 1 && (finishLastAction || action !== 'addItem');
  6400.                   lastDateTime = dateTime;
  6401.                   prevBatchId = __batchId45__;
  6402.  
  6403.                   if (addPrevItems) {
  6404.                     addItemsFx();
  6405.                   }
  6406.  
  6407.                   if (action === 'addItem') addItems.unshift(data);
  6408.                   else if (action === 'mcItemD') this.handleMarkChatItemAsDeletedAction(data);
  6409.                   else if (action === 'removeItemById') this.removeTickerItemById(data);
  6410.                   else if (action === 'mcItemAD') this.handleMarkChatItemsByAuthorAsDeletedAction(data);
  6411.                   else if (action === 'removeItemA') this.handleRemoveChatItemByAuthorAction(data);
  6412.  
  6413.                 }
  6414.  
  6415.                 addItemsFx();
  6416.               })
  6417.  
  6418.             }
  6419.  
  6420.             console.log("AMEND_TICKER_handleLiveChatAction - OK (v1)");
  6421.           } else {
  6422.             console.log("AMEND_TICKER_handleLiveChatAction - NG");
  6423.           }
  6424.  
  6425.  
  6426.  
  6427.           const do_amend_ticker_handleLiveChatAction_v3 = AMEND_TICKER_handleLiveChatAction_v3 && !AMEND_TICKER_handleLiveChatAction
  6428.             && typeof cProto.handleLiveChatAction === 'function' && !cProto.handleLiveChatAction45 && cProto.handleLiveChatAction.length === 1
  6429.             && typeof cProto.handleLiveChatActions === 'function' && !cProto.handleLiveChatActions45 && cProto.handleLiveChatActions.length === 1
  6430.             && typeof cProto.unshift === 'function' && cProto.unshift.length === 1
  6431.             && typeof cProto.handleMarkChatItemAsDeletedAction === 'function' && cProto.handleMarkChatItemAsDeletedAction.length === 1
  6432.             && typeof cProto.removeTickerItemById === 'function' && cProto.removeTickerItemById.length === 1
  6433.             && typeof cProto.handleMarkChatItemsByAuthorAsDeletedAction === 'function' && cProto.handleMarkChatItemsByAuthorAsDeletedAction.length === 1
  6434.             && typeof cProto.handleRemoveChatItemByAuthorAction === 'function' && cProto.handleRemoveChatItemByAuthorAction.length === 1
  6435.             ;
  6436.  
  6437.           if (do_amend_ticker_handleLiveChatAction_v3) {
  6438.  
  6439.             /*
  6440.                 f.handleLiveChatActions = function(a) {
  6441.                     a.length && (a.forEach(this.handleLiveChatAction, this),
  6442.                     this.updateHighlightedItem(),
  6443.                     this.shouldAnimateIn = !0)
  6444.                 }
  6445.                 */
  6446.  
  6447.             /*
  6448.  
  6449.                 f.handleLiveChatAction = function(a) {
  6450.                 var b = y(a, PM)
  6451.                   , c = y(a, QM)
  6452.                   , d = y(a, OM)
  6453.                   , e = y(a, Yab);
  6454.                 a = y(a, ibb);
  6455.                 b && this.enableCreatorGoalRevamp ? this.unshift("tickerItems", b.item) : b ? this.unshift("items", b.item) : c ? this.handleMarkChatItemAsDeletedAction(c) : d ? this.removeTickerItemById(d.targetItemId) : e ? this.handleMarkChatItemsByAuthorAsDeletedAction(e) : a && this.handleRemoveChatItemByAuthorAction(a)
  6456.             }
  6457.             */
  6458.  
  6459.             const arr00 = new Array(1);
  6460.             arr00.forEach = () => { };
  6461.             arr00.push = (...args) => { return 1 + args.length };
  6462.             arr00.pop = () => { };
  6463.             arr00.shift = () => { };
  6464.             arr00.unshift = () => { };
  6465.             arr00.splice = () => [];
  6466.             cProto.handleLiveChatActionsArr0 = arr00;
  6467.  
  6468.             cProto.handleLiveChatActions58 = cProto.handleLiveChatActions;
  6469.             cProto.xGqq4mo = null;
  6470.             cProto.xGqq4Flg = 0;
  6471.             cProto.xGqq4moPreparePromise = null;
  6472.             cProto.xGqq4f = function () {
  6473.               if (this.xGqq4Flg === 2) {
  6474.                 this.xGqq4Flg = 0;
  6475.                 tickerPE(async () => { // avoid confliction with ticker generation
  6476.                   await this.xGqq4moPreparePromise; // just in case
  6477.                   const s = this.handleLiveChatActionsArr0;
  6478.                   try {
  6479.                     this.handleLiveChatActions58(s);
  6480.                   } catch (e) {
  6481.                     console.warn(e);
  6482.                   }
  6483.                   // console.log('xGqq4f done')
  6484.                 });
  6485.  
  6486.               }
  6487.             }
  6488.             const liveActionQM = new WeakSet();
  6489.             let liveActionsLastTickerAction = null;
  6490.             const lastTickerActionM = new WeakSet();
  6491.             cProto.handleLiveChatActions = function (a) {
  6492.               // let promise = null;
  6493.               if (a && a.length) {
  6494.                 /** @type {MutationObserver | null} */
  6495.                 let mo = this.xGqq4mo;
  6496.                 // console.log('xGqq4f aaaa')
  6497.                 const hostElement = this.hostElement;
  6498.                 if (hostElement instanceof HTMLElement) {
  6499.                   if (mo === null || (mo instanceof MutationObserver && this.xGqq4p !== hostElement.xGqq4q)) {
  6500.                     if (mo instanceof MutationObserver) {
  6501.                       mo.disconnect();
  6502.                       mo.takeRecords();
  6503.                     }
  6504.                     this.xGqq4mo = mo = new MutationObserver(() => {
  6505.                       this.xGqq4f();
  6506.                     })
  6507.                     const moid = `dm-${Date.now()}-${Math.floor(Math.random() * 314159265359 + 314159265359).toString(36)}`;;
  6508.                     this.xGqq4p = moid;
  6509.                     hostElement.xGqq4q = moid;
  6510.                     mo.observe(hostElement, { subtree: true, childList: true });
  6511.                   }
  6512.                 }
  6513.                 for (const u of a) {
  6514.                   u && liveActionQM.add(u)
  6515.                 }
  6516.  
  6517.                 /** @type {Promise} */
  6518.                 const pastPromise = this.xGqq4moPreparePromise || null;
  6519.                 this.xGqq4moPreparePromise = (async () => {
  6520.                   try {
  6521.                     await pastPromise; // just in case
  6522.                     liveActionsLastTickerAction = null;
  6523.                     a.forEach(this.handleLiveChatAction, this);
  6524.                     if (liveActionsLastTickerAction) lastTickerActionM.add(liveActionsLastTickerAction)
  6525.                   } catch (e) { console.warn(e); } // Promise catch can make the promise always resolved
  6526.                   // now tickerPE can execute
  6527.                 })();
  6528.  
  6529.  
  6530.                 // console.log('xGqq4f bbbb')
  6531.                 // promise = this.handleLiveChatAction_LastPromise;
  6532.                 // const f = () => {
  6533.                 //   const s = this.handleLiveChatActionsArr0;
  6534.                 //   try {
  6535.                 //     return this.handleLiveChatActions58(s);
  6536.                 //   } catch (e) {
  6537.                 //     console.warn(e);
  6538.                 //   }
  6539.                 // }
  6540.                 // if (!promise) {
  6541.                 //   f();
  6542.                 // } else {
  6543.                 //   promise.then(f);
  6544.                 // }
  6545.               } else {
  6546.                 return this.handleLiveChatActions58(a);
  6547.               }
  6548.             }
  6549.  
  6550.             // 12:17:05.748 PM
  6551.             // 12:17:05.785 v {name: 'addLiveChatTickerItemAction'}
  6552.             // 12:17:08.059 QM
  6553.             // 12:17:08.068 v {name: 'markChatItemAsDeletedAction'}
  6554.             // 12:17:09.123 OM
  6555.             // 12:17:09.133 v {name: 'removeChatItemAction'}
  6556.             // 12:17:11.566 Yab
  6557.             // 12:17:11.574 v {name: 'markChatItemsByAuthorAsDeletedAction'}
  6558.             // 12:17:14.272 ibb
  6559.             // 12:17:14.282 v {name: 'removeChatItemByAuthorAction'}
  6560.  
  6561.             const keyFilter = (a, keySet) => {
  6562.               if (typeof (a || 0) === 'object') {
  6563.                 for (const k of Object.keys(a)) {
  6564.                   if (keySet.has(k)) {
  6565.                     return k;
  6566.                   }
  6567.                 }
  6568.               }
  6569.               return null;
  6570.             }
  6571.  
  6572.             cProto.lcuJB = function () {
  6573.               this.ddnB8 = 1;
  6574.               let res = new Set();
  6575.               const pxy = new Proxy({}, {
  6576.                 get(target, prop) {
  6577.                   res.add(prop);
  6578.                 },
  6579.                 set(target, prop, value) {
  6580.                   return true;
  6581.                 }
  6582.               });
  6583.               this.handleLiveChatAction(pxy);
  6584.               this.ddnB8 = 0;
  6585.               return res.size > 0 ? res : null;
  6586.             }
  6587.  
  6588.             cProto.ddnB8 = 0;
  6589.             cProto.handleLiveChatAction58 = cProto.handleLiveChatAction;
  6590.             cProto.liveChatActionFilterKeys = null;
  6591.             cProto.handleLiveChatAction = function (a) {
  6592.               if (this.ddnB8) return this.handleLiveChatAction58(a);
  6593.               const inQM = a && liveActionQM.delete(a); // true if added from handleLiveChatActions
  6594.               let keySet = this.liveChatActionFilterKeys;
  6595.               if (keySet === null) {
  6596.                 const keys = this.lcuJB();
  6597.                 this.liveChatActionFilterKeys = keySet = (keys || false);
  6598.               }
  6599.               if (!keySet) {
  6600.                 if (!unexpectedErr) {
  6601.                   console.error(unexpectedErr = "************************ [YouTube Super Fast Chat] TickerRenderer:handleLiveChatAction keySet not found; ERR 0xF3D0 ************************");
  6602.                 }
  6603.                 return this.handleLiveChatAction58(a);
  6604.               }
  6605.               const key = keyFilter(a, keySet);
  6606.               if (!key) {
  6607.                 return this.handleLiveChatAction58(a); // just by default
  6608.               }
  6609.  
  6610.               if (inQM) {
  6611.                 liveActionsLastTickerAction = a;
  6612.               }
  6613.               this.handleLiveChatAction_LastPromise = tickerPE(async () => {
  6614.                 await this.xGqq4moPreparePromise; // avoid tickerPE is called before actions under looping in handleLiveChatActions
  6615.                 const inLQM = lastTickerActionM.delete(a); // multiple candidates
  6616.                 if (inLQM) this.xGqq4Flg = 2; // 2 to 2 in case two batches are added "in the same time"
  6617.                 this.handleLiveChatAction58(a);
  6618.                 // if (inLQM) await timelineResolve(); // timing split by marco event to make tickers generation in different 16ms frame
  6619.                 // else await Promise.resolve();
  6620.                 // await Promise.resolve();
  6621.                 await timelineResolve(); // timing split by marco event to make tickers generation in different 16ms frame
  6622.               });
  6623.             }
  6624.  
  6625.           }
  6626.  
  6627.           if (RAF_FIX_keepScrollClamped) {
  6628.  
  6629.             // to be improved
  6630.  
  6631.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  6632.  
  6633.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  6634.               cProto.keepScrollClamped = function () {
  6635.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  6636.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  6637.                 this.maybeClampScroll()
  6638.               }
  6639.  
  6640.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  6641.             } else {
  6642.  
  6643.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  6644.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  6645.             }
  6646.  
  6647.           }
  6648.  
  6649.  
  6650.           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) {
  6651.             // to be replaced by animator
  6652.  
  6653.             cProto.startScrolling = function (a) {
  6654.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  6655.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  6656.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  6657.               this.scrollRatePixelsPerSecond = a;
  6658.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  6659.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  6660.             };
  6661.  
  6662.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  6663.  
  6664.             // 2024.03.26
  6665.             // https://www.youtube.com/s/desktop/436f2749/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  6666.             /*
  6667.  
  6668.                 f.scrollIncrementally = function(a) {
  6669.                     var b = a - (this.lastFrameTimestamp || 0);
  6670.                     Q(this.hostElement).querySelector(this.tickerBarQuery).scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  6671.                     this.maybeClampScroll();
  6672.                     this.updateArrows();
  6673.                     this.lastFrameTimestamp = a;
  6674.                     0 < Q(this.hostElement).querySelector(this.tickerBarQuery).scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = window.requestAnimationFrame(this.scrollIncrementally.bind(this)) : this.stopScrolling()
  6675.                 }
  6676.             */
  6677.  
  6678.             cProto.__getTickerBarQuery__ = function () {
  6679.               const tickerBarQuery = this.tickerBarQuery === '#items' ? this.$.items : this.hostElement.querySelector(this.tickerBarQuery);
  6680.               return tickerBarQuery;
  6681.             }
  6682.  
  6683.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  6684.               const b = a - (this.lastFrameTimestamp || 0);
  6685.               const rate = this.scrollRatePixelsPerSecond
  6686.               const q = b / 1E3 * (rate || 0);
  6687.  
  6688.               const tickerBarQuery = this.__getTickerBarQuery__();
  6689.               const sl = tickerBarQuery.scrollLeft;
  6690.               // console.log(rate, sl, q)
  6691.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  6692.  
  6693.               } else if (q > -1e-5 && q < 1e-5) {
  6694.  
  6695.               } else {
  6696.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  6697.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  6698.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  6699.                 if (cond1 || cond2 || cond3) {
  6700.                   tickerBarQuery.scrollLeft += q;
  6701.                   this.maybeClampScroll();
  6702.                   this.updateArrows();
  6703.                 }
  6704.               }
  6705.  
  6706.               this.lastFrameTimestamp = a;
  6707.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  6708.               0 < tickerBarQuery.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  6709.             } : function (a) {
  6710.               const b = a - (this.lastFrameTimestamp || 0);
  6711.               const tickerBarQuery = this.__getTickerBarQuery__();
  6712.               tickerBarQuery.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  6713.               this.maybeClampScroll();
  6714.               this.updateArrows();
  6715.               this.lastFrameTimestamp = a;
  6716.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  6717.               0 < tickerBarQuery.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  6718.             };
  6719.  
  6720.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  6721.           } else {
  6722.             assertor(() => fnIntegrity(cProto.startScrolling, '1.43.31'));
  6723.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  6724.             console.log('cProto.startScrolling', cProto.startScrolling);
  6725.             console.log('cProto.scrollIncrementally', cProto.scrollIncrementally);
  6726.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  6727.           }
  6728.  
  6729.  
  6730.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  6731.  
  6732.             cProto.attached37 = cProto.attached;
  6733.             cProto.detached37 = cProto.detached;
  6734.  
  6735.             let naohzId = 0;
  6736.             cProto.__naohzId__ = 0;
  6737.             cProto.attached = function () {
  6738.               Promise.resolve().then(() => {
  6739.  
  6740.                 const hostElement = this.hostElement || this;
  6741.                 if (!(hostElement instanceof HTMLElement)) return;
  6742.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  6743.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  6744.                 // or #chat-messages
  6745.                 if (!ironPage) return;
  6746.  
  6747.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  6748.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  6749.                 this.__naohzId__ = ++naohzId;
  6750.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  6751.  
  6752.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  6753.  
  6754.               });
  6755.               return this.attached37.apply(this, arguments);
  6756.             };
  6757.             cProto.detached = function () {
  6758.               Promise.resolve().then(() => {
  6759.  
  6760.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  6761.                 if (!ironPage) return;
  6762.  
  6763.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  6764.  
  6765.               });
  6766.               return this.detached37.apply(this, arguments);
  6767.             };
  6768.  
  6769.             const clickFade = (u) => {
  6770.               u.click();
  6771.             };
  6772.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  6773.  
  6774.               const target = (evt || 0).target || 0;
  6775.               if (!target) return;
  6776.  
  6777.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  6778.                 const is = p.is;
  6779.                 if (typeof is === 'string' && is) {
  6780.  
  6781.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  6782.                     return;
  6783.                   }
  6784.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  6785.                     const fade = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  6786.                     if (fade) {
  6787.                       Promise.resolve(fade).then(clickFade);
  6788.                       evt && evt.stopPropagation();
  6789.                     }
  6790.                     return;
  6791.                   }
  6792.                   if (is !== 'yt-live-chat-ticker-renderer') {
  6793.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  6794.                     if (!is.endsWith('-renderer')) return;
  6795.                   }
  6796.  
  6797.                 } else {
  6798.                   if ((p.nodeName || '').includes('BUTTON')) return;
  6799.                 }
  6800.  
  6801.               }
  6802.             };
  6803.  
  6804.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  6805.  
  6806.           } else {
  6807.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  6808.           }
  6809.  
  6810.  
  6811.         })();
  6812.  
  6813.         console.log("[End]");
  6814.  
  6815.         console.groupEnd();
  6816.  
  6817.       }).catch(console.warn);
  6818.  
  6819.  
  6820.  
  6821.       if (ENABLE_RAF_HACK_INPUT_RENDERER || DELAY_FOCUSEDCHANGED) {
  6822.  
  6823.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  6824.  
  6825.           mightFirstCheckOnYtInit();
  6826.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  6827.           console.log("[Begin]");
  6828.           (() => {
  6829.  
  6830.  
  6831.  
  6832.             const tag = "yt-live-chat-message-input-renderer"
  6833.             const dummy = document.createElement(tag);
  6834.  
  6835.             const cProto = getProto(dummy);
  6836.             if (!cProto || !cProto.attached) {
  6837.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6838.               return;
  6839.             }
  6840.  
  6841.  
  6842.             if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  6843.  
  6844.               let doHack = false;
  6845.               if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  6846.  
  6847.                 // not cancellable
  6848.  
  6849.  
  6850.                 doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  6851.  
  6852.               }
  6853.  
  6854.               if (doHack) {
  6855.  
  6856.                 cProto.handleTimeout = function (a) {
  6857.                   console.log('cProto.handleTimeout', tag)
  6858.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  6859.                   this.timeoutDurationMs = this.timeoutMs = a;
  6860.                   this.countdownRatio = 1;
  6861.                   0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  6862.                 };
  6863.                 cProto.updateTimeout = function (a) {
  6864.                   console.log('cProto.updateTimeout', tag)
  6865.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  6866.                   this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  6867.                     this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  6868.                   this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  6869.                     rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  6870.                 };
  6871.  
  6872.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  6873.               } else {
  6874.  
  6875.                 console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  6876.                 console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  6877.  
  6878.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  6879.               }
  6880.  
  6881.  
  6882.             }
  6883.  
  6884.             if (DELAY_FOCUSEDCHANGED && typeof cProto.onFocusedChanged === 'function' && cProto.onFocusedChanged.length === 1 && !cProto.onFocusedChanged372) {
  6885.               cProto.onFocusedChanged372 = cProto.onFocusedChanged;
  6886.               cProto.onFocusedChanged = function (a) {
  6887.                 Promise.resolve().then(() => {
  6888.                   if (this.isAttached === true) this.onFocusedChanged372(a);
  6889.                 }).catch(console.warn);
  6890.               }
  6891.             }
  6892.  
  6893.           })();
  6894.  
  6895.           console.log("[End]");
  6896.  
  6897.           console.groupEnd();
  6898.  
  6899.  
  6900.         })
  6901.  
  6902.       }
  6903.  
  6904.  
  6905.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  6906.  
  6907.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  6908.  
  6909.           mightFirstCheckOnYtInit();
  6910.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  6911.           console.log("[Begin]");
  6912.           (() => {
  6913.  
  6914.             const tag = "yt-emoji-picker-renderer"
  6915.             const dummy = document.createElement(tag);
  6916.  
  6917.             const cProto = getProto(dummy);
  6918.             if (!cProto || !cProto.attached) {
  6919.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6920.               return;
  6921.             }
  6922.  
  6923.             let doHack = false;
  6924.             if (typeof cProto.animateScroll_ === 'function') {
  6925.  
  6926.               // not cancellable
  6927.               console.log('animateScroll_', typeof cProto.animateScroll_)
  6928.  
  6929.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  6930.  
  6931.             }
  6932.  
  6933.             if (doHack) {
  6934.  
  6935.               const querySelector = HTMLElement.prototype.querySelector;
  6936.               const U = (element) => ({
  6937.                 querySelector: (selector) => querySelector.call(element, selector)
  6938.               });
  6939.  
  6940.               cProto.animateScroll_ = function (a) {
  6941.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  6942.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  6943.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  6944.                 a -= this.lastAnimationTime_;
  6945.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  6946.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  6947.                     this.animationEnd_ = this.animationStart_ = null,
  6948.                     this.lastAnimationTime_ = 0);
  6949.                 this.updateButtons_()
  6950.               }
  6951.  
  6952.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  6953.             } else {
  6954.  
  6955.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  6956.             }
  6957.  
  6958.           })();
  6959.  
  6960.           console.log("[End]");
  6961.  
  6962.           console.groupEnd();
  6963.         });
  6964.       }
  6965.  
  6966.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  6967.  
  6968.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  6969.  
  6970.           mightFirstCheckOnYtInit();
  6971.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  6972.           console.log("[Begin]");
  6973.           (() => {
  6974.  
  6975.             const tag = "yt-live-chat-docked-message"
  6976.             const dummy = document.createElement(tag);
  6977.  
  6978.             const cProto = getProto(dummy);
  6979.             if (!cProto || !cProto.attached) {
  6980.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6981.               return;
  6982.             }
  6983.  
  6984.             let doHack = false;
  6985.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  6986.  
  6987.               // cancelable - this.intersectRAF <detached>
  6988.               // yt-live-chat-docked-message
  6989.               // boundCheckIntersections <-> checkIntersections
  6990.               // onDockableMessagesChanged
  6991.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  6992.  
  6993.               console.log('detached', typeof cProto.detached)
  6994.               console.log('checkIntersections', typeof cProto.checkIntersections)
  6995.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  6996.  
  6997.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  6998.  
  6999.             }
  7000.  
  7001.             if (doHack) {
  7002.  
  7003.               cProto.checkIntersections = function () {
  7004.                 // console.log('cProto.checkIntersections', tag)
  7005.                 if (this.dockableMessages.length) {
  7006.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  7007.                   let a = this.dockableMessages[0]
  7008.                     , b = this.hostElement.getBoundingClientRect();
  7009.                   a = a.getBoundingClientRect();
  7010.                   let c = a.top - b.top
  7011.                     , d = 8 >= c;
  7012.                   c = 8 >= c - this.hostElement.clientHeight;
  7013.                   if (d) {
  7014.                     let e;
  7015.                     for (; d;) {
  7016.                       e = this.dockableMessages.shift();
  7017.                       d = this.dockableMessages[0];
  7018.                       if (!d)
  7019.                         break;
  7020.                       d = d.getBoundingClientRect();
  7021.                       c = d.top - b.top;
  7022.                       let f = 8 >= c;
  7023.                       if (8 >= c - a.height)
  7024.                         if (f)
  7025.                           a = d;
  7026.                         else
  7027.                           return;
  7028.                       d = f
  7029.                     }
  7030.                     this.dock(e)
  7031.                   } else
  7032.                     c && this.dockedItem && this.clear()
  7033.                 } else
  7034.                   this.intersectRAF = 0
  7035.               }
  7036.  
  7037.               cProto.onDockableMessagesChanged = function () {
  7038.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  7039.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  7040.               }
  7041.  
  7042.               cProto.detached = function () {
  7043.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  7044.               }
  7045.  
  7046.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  7047.             } else {
  7048.  
  7049.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  7050.             }
  7051.  
  7052.           })();
  7053.  
  7054.           console.log("[End]");
  7055.  
  7056.           console.groupEnd();
  7057.  
  7058.         }).catch(console.warn);
  7059.  
  7060.       }
  7061.  
  7062.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  7063.  
  7064.         customElements.whenDefined("yt-img-shadow").then(() => {
  7065.  
  7066.           mightFirstCheckOnYtInit();
  7067.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  7068.           console.log("[Begin]");
  7069.           (() => {
  7070.  
  7071.             const tag = "yt-img-shadow"
  7072.             const dummy = document.createElement(tag);
  7073.  
  7074.             const cProto = getProto(dummy);
  7075.             if (!cProto || !cProto.attached) {
  7076.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7077.               return;
  7078.             }
  7079.  
  7080.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  7081.  
  7082.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  7083.               cProto.thumbnailChanged_ = function (a) {
  7084.  
  7085.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  7086.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  7087.  
  7088.                 return this.thumbnailChanged66_.apply(this, arguments)
  7089.  
  7090.               }
  7091.               console.log("cProto.thumbnailChanged_ - OK");
  7092.  
  7093.             } else {
  7094.               console.log("cProto.thumbnailChanged_ - NG");
  7095.  
  7096.             }
  7097.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  7098.  
  7099.               cProto.setSrc66_ = cProto.setSrc_;
  7100.               cProto.setSrc_ = function (a) {
  7101.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  7102.                 return this.setSrc66_.apply(this, arguments)
  7103.               }
  7104.  
  7105.               console.log("cProto.setSrc_ - OK");
  7106.             } else {
  7107.  
  7108.               console.log("cProto.setSrc_ - NG");
  7109.             }
  7110.  
  7111.           })();
  7112.  
  7113.           console.log("[End]");
  7114.  
  7115.           console.groupEnd();
  7116.  
  7117.         }).catch(console.warn);
  7118.  
  7119.       }
  7120.  
  7121.       if (FIX_THUMBNAIL_DATACHANGED) {
  7122.  
  7123.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  7124.  
  7125.           mightFirstCheckOnYtInit();
  7126.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  7127.           console.log("[Begin]");
  7128.           (() => {
  7129.  
  7130.             const tag = "yt-live-chat-author-badge-renderer"
  7131.             const dummy = document.createElement(tag);
  7132.  
  7133.             const cProto = getProto(dummy);
  7134.             if (!cProto || !cProto.attached) {
  7135.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7136.               return;
  7137.             }
  7138.  
  7139.  
  7140.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && '|1.163.100|1.162.100|1.160.97|1.159.97|'.includes(`|${fnIntegrity(cProto.dataChanged)}|`)) {
  7141.  
  7142.  
  7143.  
  7144.               cProto.dataChanged86 = cProto.dataChanged;
  7145.               cProto.dataChanged = function (a) {
  7146.  
  7147.                 /*
  7148.  
  7149.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  7150.                       b.removeChild(b.firstChild);
  7151.                   if (a)
  7152.                       if (a.icon) {
  7153.                           var c = document.createElement("yt-icon");
  7154.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  7155.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  7156.                           b.appendChild(c)
  7157.                       } else if (a.customThumbnail) {
  7158.                           c = document.createElement("img");
  7159.                           var d;
  7160.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  7161.                           b.appendChild(c),
  7162.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  7163.                       }
  7164.  
  7165.                 */
  7166.  
  7167.  
  7168.                 /* 2024.04.20 */
  7169.                 /*
  7170.                   for (var b = Tx(N(this.hostElement).querySelector("#image")); b.firstChild; )
  7171.                       b.removeChild(b.firstChild);
  7172.                   if (a)
  7173.                       if (a.icon) {
  7174.                           var c = document.createElement("yt-icon");
  7175.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.polymerController.icon = "yt-sys-icons:shield-filled",
  7176.                           c.polymerController.defaultToFilled = !0) : c.polymerController.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  7177.                           b.appendChild(c)
  7178.                       } else if (a.customThumbnail) {
  7179.                           c = document.createElement("img");
  7180.                           var d;
  7181.                           (d = (d = WD(a.customThumbnail.thumbnails, 16)) ? Sb(ec(d)) : null) ? (c.src = d,
  7182.                           b.appendChild(c),
  7183.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : nr(new mn("Could not compute URL for thumbnail",a.customThumbnail))
  7184.                       }
  7185.                 */
  7186.  
  7187.                 const image = ((this || 0).$ || 0).image
  7188.                 if (image && a && image.firstElementChild) {
  7189.                   const exisiting = image.firstElementChild;
  7190.                   if (exisiting === image.lastElementChild) {
  7191.  
  7192.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  7193.  
  7194.                       const c = exisiting;
  7195.                       const t = insp(c);
  7196.                       const w = ('icon' in t || 'defaultToFilled' in t) ? t : c;
  7197.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  7198.                         if (w.icon !== "yt-sys-icons:shield-filled") w.icon = "yt-sys-icons:shield-filled";
  7199.                         if (w.defaultToFilled !== true) w.defaultToFilled = true;
  7200.                       } else {
  7201.                         const p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  7202.                         if (w.icon !== p) w.icon = p;
  7203.                         if (w.defaultToFilled !== false) w.defaultToFilled = false;
  7204.                       }
  7205.                       return;
  7206.  
  7207.  
  7208.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  7209.  
  7210.                       const c = exisiting;
  7211.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  7212.  
  7213.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  7214.                         return;
  7215.                       }
  7216.                       /*
  7217.  
  7218.                         var d;
  7219.                         (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  7220.  
  7221.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  7222.                         */
  7223.                     }
  7224.  
  7225.                   }
  7226.                 }
  7227.                 return this.dataChanged86.apply(this, arguments)
  7228.  
  7229.               }
  7230.               console.log("cProto.dataChanged - OK");
  7231.  
  7232.             } else {
  7233.               assertor(() => fnIntegrity(cProto.dataChanged, '1.162.100'));
  7234.               console.log("cProto.dataChanged - NG");
  7235.  
  7236.             }
  7237.  
  7238.           })();
  7239.  
  7240.           console.log("[End]");
  7241.  
  7242.           console.groupEnd();
  7243.  
  7244.         }).catch(console.warn);
  7245.  
  7246.  
  7247.       }
  7248.  
  7249.  
  7250.       if (FIX_TOOLTIP_DISPLAY) {
  7251.  
  7252.         // ----------------------------------------------------------------------------------------------------
  7253.  
  7254.         const checkPDGet = (pd) => {
  7255.           return pd && pd.get && !pd.set && pd.enumerable && pd.configurable;
  7256.         }
  7257.  
  7258.         const tooltipUIWM = new WeakMap();
  7259.         const tooltipInitProps = {};
  7260.         const createTooltipIfRequired_ = function () {
  7261.           let r;
  7262.           if (tooltipUIWM.get(this) === void 0) {
  7263.             const w = document.createElement;
  7264.             let EU = null;
  7265.             tooltipUIWM.set(this, null);
  7266.             document.createElement = function () {
  7267.               let r = w.apply(this, arguments);
  7268.               EU = r;
  7269.               return r;
  7270.             };
  7271.             r = this.createTooltipIfRequired14_();
  7272.             document.createElement = w;
  7273.             if (EU instanceof HTMLElement && EU.is) {
  7274.               tooltipUIWM.set(this, EU);
  7275.               EU.setAttribute('__nogc__', ''); // avoid gc process script
  7276.  
  7277.               if (typeof EU.offset === 'number') tooltipInitProps['offset'] = EU.offset;
  7278.               if (typeof EU.fitToVisibleBounds === 'boolean') tooltipInitProps['fitToVisibleBounds'] = EU.fitToVisibleBounds;
  7279.               if (typeof EU.position === 'string') tooltipInitProps['position'] = EU.position;
  7280.               if (typeof EU.for === 'string') tooltipInitProps['for'] = EU.for;
  7281.  
  7282.               // this.__mcT__ = EU.outerHTML;
  7283.               // EU.__dataX = JSON.stringify(EU.__data);
  7284.               // EU.__dataY = Object.entries(EU);
  7285.  
  7286.               // <<< FOR DEBUG >>>
  7287.               // let kx;
  7288.               // Object.defineProperty(EU, '_target', {
  7289.               //   get(){
  7290.               //     return kx;
  7291.               //   },
  7292.               //   set(nv){
  7293.               //     kx= nv;
  7294.               //     debugger;
  7295.               //     return true;
  7296.               //   }
  7297.               // });
  7298.               // <<< FOR DEBUG >>>
  7299.  
  7300.               if (typeof Polymer !== 'undefined' && Polymer.__fixedGetOwnerRoot__ && Polymer.__fixedQuerySelector__) {
  7301.  
  7302.               } else {
  7303.                 let eProto = null;
  7304.                 const euCnt = insp(EU);
  7305.                 if (checkPDGet(Object.getOwnPropertyDescriptor(euCnt.constructor.prototype || {}, 'target'))) {
  7306.  
  7307.                   eProto = euCnt.constructor.prototype;
  7308.                 } else if (checkPDGet(Object.getOwnPropertyDescriptor(EU.constructor.prototype || {}, 'target'))) {
  7309.  
  7310.                   eProto = EU.constructor.prototype;
  7311.                 }
  7312.                 if (eProto) {
  7313.                   delete eProto.target;
  7314.                   /*
  7315.     
  7316.                       get target() {
  7317.                           var a = Pv(this).parentNode, b = Pv(this).getOwnerRoot(), c;
  7318.                           this.for ? c = Pv(b).querySelector("#" + this.for) : c = a.nodeType == Node.DOCUMENT_FRAGMENT_NODE ? b.host : a;
  7319.                           return c
  7320.                       },
  7321.                   */
  7322.                   Object.defineProperty(eProto, 'target', {
  7323.                     get() {
  7324.                       let a = this.parentNode, b = this.getRootNode();
  7325.                       return (this.for ? b.querySelector("#" + this.for) : a)
  7326.                     }
  7327.                   })
  7328.                 }
  7329.               }
  7330.               // setInterval(()=>EU.updatePosition(), 100)
  7331.  
  7332.             } else {
  7333.               tooltipUIWM.set(this, null);
  7334.             }
  7335.           } else {
  7336.             r = this.createTooltipIfRequired14_();
  7337.           }
  7338.  
  7339.           const EU = tooltipUIWM.get(this);
  7340.           if (EU) {
  7341.             EU.remove();
  7342.             if (typeof tooltipInitProps.offset === 'number') EU['offset'] = tooltipInitProps.offset;
  7343.             if (typeof tooltipInitProps.fitToVisibleBounds === 'boolean') EU['fitToVisibleBounds'] = tooltipInitProps.fitToVisibleBounds;
  7344.             try {
  7345.               if (typeof tooltipInitProps.position === 'string') EU['position'] = tooltipInitProps.position;
  7346.               if (typeof tooltipInitProps.for === 'string') EU['for'] = tooltipInitProps.for; else delete EU.for;
  7347.             } catch (e) { }
  7348.           }
  7349.           return r;
  7350.         };
  7351.  
  7352.  
  7353.         // added in 2024.05.02
  7354.         getLCRDummy().then(async (lcrDummy) => {
  7355.  
  7356.           // console.log(8171, 99);
  7357.           const tag = "yt-live-chat-renderer"
  7358.           const dummy = lcrDummy;
  7359.  
  7360.           const cProto = getProto(dummy);
  7361.           if (!cProto || !cProto.attached) {
  7362.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7363.             return;
  7364.           }
  7365.  
  7366.           /*
  7367.           <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;
  7368.           */
  7369.  
  7370.           if (cProto && typeof cProto.createTooltipIfRequired_ === 'function' && cProto.createTooltipIfRequired_.length === 0 && !cProto.createTooltipIfRequired14_) {
  7371.             cProto.createTooltipIfRequired14_ = cProto.createTooltipIfRequired_;
  7372.             cProto.createTooltipIfRequired_ = createTooltipIfRequired_;
  7373.           }
  7374.  
  7375.         });
  7376.  
  7377.         // ----------------------------------------------------------------------------------------------------
  7378.  
  7379.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  7380.  
  7381.           mightFirstCheckOnYtInit();
  7382.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  7383.           console.log("[Begin]");
  7384.           (() => {
  7385.  
  7386.             const tag = "tp-yt-paper-tooltip"
  7387.             const dummy = document.createElement(tag);
  7388.  
  7389.             const cProto = getProto(dummy);
  7390.             if (!cProto || !cProto.attached) {
  7391.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7392.               return;
  7393.             }
  7394.  
  7395.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  7396.  
  7397.               cProto._readyClients43 = cProto._readyClients;
  7398.               cProto._readyClients = function () {
  7399.                 // console.log(1238)
  7400.  
  7401.                 let r = cProto._readyClients43.apply(this, arguments);
  7402.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  7403.                 return r;
  7404.               }
  7405.  
  7406.               console.log("_readyClients - OK");
  7407.  
  7408.             } else {
  7409.               console.log("_readyClients - NG");
  7410.  
  7411.             }
  7412.  
  7413.             if (typeof cProto.show === 'function' && !cProto.show17) {
  7414.               cProto.show17 = cProto.show;
  7415.               cProto.show = function () {
  7416.  
  7417.                 let r = this.show17.apply(this, arguments);
  7418.                 this._showing === true && Promise.resolve().then(() => {
  7419.                   const tooltip = (this.$ || 0).tooltip;
  7420.  
  7421.                   if (tooltip && tooltip.firstElementChild === null) {
  7422.                     let text = tooltip.textContent;
  7423.                     if (typeof text === 'string' && text.length >= 2) {
  7424.                       tooltip.textContent = text.trim();
  7425.                     }
  7426.                   }
  7427.                 }).catch(console.warn)
  7428.                 return r;
  7429.               }
  7430.  
  7431.               console.log("trim tooltip content - OK");
  7432.  
  7433.             } else {
  7434.               console.log("trim tooltip content - NG");
  7435.  
  7436.             }
  7437.  
  7438.  
  7439.           })();
  7440.  
  7441.           console.log("[End]");
  7442.  
  7443.           console.groupEnd();
  7444.  
  7445.         }).catch(console.warn);
  7446.  
  7447.       }
  7448.  
  7449.  
  7450.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  7451.  
  7452.         const hookDocumentMouseDownSetupFn = () => {
  7453.  
  7454.           let muzTimestamp = 0;
  7455.           let nszDropdown = null;
  7456.  
  7457.           const handlerObject = {
  7458.  
  7459.             muHandler282: function (evt) {
  7460.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  7461.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  7462.               const dropdown = nszDropdown;
  7463.               muzTimestamp = 0;
  7464.               nszDropdown = null;
  7465.  
  7466.               const kurMPCe = kRef(currentMenuPivotWR) || 0;
  7467.               const hostElement = kurMPCe.hostElement || kurMPCe; // should be always hostElement === kurMPCe ?
  7468.               if (!hostElement.hasAttribute('menu-visible')) return;
  7469.  
  7470.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  7471.               if (chatBanner) return;
  7472.  
  7473.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  7474.                 muzTimestamp = Date.now();
  7475.                 evt.stopImmediatePropagation();
  7476.                 evt.stopPropagation();
  7477.                 Promise.resolve(dropdown).then((dropdown) => {
  7478.                   dropdown.cancel();
  7479.                 });
  7480.               }
  7481.  
  7482.             },
  7483.  
  7484.             mlHandler282: function (evt) {
  7485.               muzTimestamp = 0;
  7486.               nszDropdown = null;
  7487.             },
  7488.  
  7489.             ckHandler282: function (evt) {
  7490.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  7491.               if (Date.now() - muzTimestamp < 40) {
  7492.                 muzTimestamp = Date.now();
  7493.                 evt.stopImmediatePropagation();
  7494.                 evt.stopPropagation();
  7495.               }
  7496.             },
  7497.  
  7498.             tapHandler282: function (evt) {
  7499.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  7500.               if (Date.now() - muzTimestamp < 40) {
  7501.                 muzTimestamp = Date.now();
  7502.                 evt.stopImmediatePropagation();
  7503.                 evt.stopPropagation();
  7504.               }
  7505.             },
  7506.  
  7507.             handleEvent(evt) {
  7508.               if (evt) {
  7509.                 const kurMPCe = kRef(currentMenuPivotWR) || 0;
  7510.                 const kurMPCc = insp(kurMPCe);
  7511.                 const hostElement = kurMPCc.hostElement || kurMPCc;
  7512.                 if (!kurMPCc || kurMPCc.isAttached !== true || hostElement.isConnected !== true) return;
  7513.                 switch (evt.type) {
  7514.                   case 'mouseup':
  7515.                     return this.muHandler282(evt);
  7516.                   case 'mouseleave':
  7517.                     return this.mlHandler282(evt);
  7518.                   case 'tap':
  7519.                     return this.tapHandler282(evt);
  7520.                   case 'click':
  7521.                     return this.ckHandler282(evt);
  7522.                 }
  7523.               }
  7524.             }
  7525.  
  7526.           }
  7527.  
  7528.           document.addEventListener('mousedown', function (evt) {
  7529.  
  7530.             if (!evt || !evt.isTrusted || !evt.target) return;
  7531.  
  7532.             muzTimestamp = 0;
  7533.             nszDropdown = null;
  7534.  
  7535.             /** @type {HTMLElement | null} */
  7536.             const kurMP = kRef(currentMenuPivotWR);
  7537.             if (!kurMP) return;
  7538.             const kurMPCe = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0; // element
  7539.  
  7540.             if (!kurMPCe || !kurMPCe.hasAttribute('whole-message-clickable')) return;
  7541.  
  7542.             const kurMPCc = insp(kurMPCe); // controller
  7543.  
  7544.             if (!kurMPCc.isClickableChatRow111 || !kurMPCc.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPCe, evt.target)) return;
  7545.  
  7546.             const chatBanner = HTMLElement.prototype.closest.call(kurMPCe, 'yt-live-chat-banner-renderer') || 0;
  7547.             if (chatBanner) return;
  7548.  
  7549.             let targetDropDown = null;
  7550.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  7551.               if (dropdown && dropdown.positionTarget === kurMP) {
  7552.                 targetDropDown = dropdown;
  7553.               }
  7554.             }
  7555.  
  7556.             if (!targetDropDown) return;
  7557.  
  7558.             if ((nszDropdown = targetDropDown)) {
  7559.               muzTimestamp = Date.now();
  7560.               evt.stopImmediatePropagation();
  7561.               evt.stopPropagation();
  7562.               currentMenuPivotWR = mWeakRef(kurMPCe);
  7563.  
  7564.               const listenOpts = { capture: true, passive: false, once: true };
  7565.  
  7566.               // remove unexcecuted eventHandler
  7567.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  7568.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  7569.               document.removeEventListener('tap', handlerObject, listenOpts);
  7570.               document.removeEventListener('click', handlerObject, listenOpts);
  7571.  
  7572.               // inject one time eventHandler to by pass events
  7573.               document.addEventListener('mouseup', handlerObject, listenOpts);
  7574.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  7575.               document.addEventListener('tap', handlerObject, listenOpts);
  7576.               document.addEventListener('click', handlerObject, listenOpts);
  7577.  
  7578.             }
  7579.  
  7580.           }, true);
  7581.  
  7582.         }
  7583.  
  7584.  
  7585.         // yt-live-chat-paid-message-renderer ??
  7586.  
  7587.         /*
  7588.  
  7589.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  7590.  
  7591.  
  7592.         "yt-live-chat-ticker-paid-message-item-renderer"
  7593.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  7594.         "yt-live-chat-paid-message-renderer"
  7595.         "yt-live-chat-text-message-renderer"
  7596.         "yt-live-chat-paid-sticker-renderer"
  7597.  
  7598.         */
  7599.  
  7600.  
  7601.         whenDefinedMultiple([
  7602.  
  7603.           "yt-live-chat-paid-message-renderer",
  7604.           "yt-live-chat-membership-item-renderer",
  7605.           "yt-live-chat-paid-sticker-renderer",
  7606.           "yt-live-chat-text-message-renderer",
  7607.           "yt-live-chat-auto-mod-message-renderer",
  7608.  
  7609.           /*
  7610.           "yt-live-chat-ticker-paid-message-item-renderer",
  7611.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  7612.           "yt-live-chat-paid-message-renderer",
  7613.           "yt-live-chat-text-message-renderer",
  7614.           "yt-live-chat-paid-sticker-renderer",
  7615.  
  7616.           "yt-live-chat-ticker-sponsor-item-renderer",
  7617.           "yt-live-chat-banner-header-renderer",
  7618.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  7619.           "ytd-sponsorships-live-chat-header-renderer",
  7620.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  7621.  
  7622.  
  7623.  
  7624.  
  7625.           "yt-live-chat-auto-mod-message-renderer",
  7626.           "yt-live-chat-text-message-renderer",
  7627.           "yt-live-chat-paid-message-renderer",
  7628.  
  7629.           "yt-live-chat-legacy-paid-message-renderer",
  7630.           "yt-live-chat-membership-item-renderer",
  7631.           "yt-live-chat-paid-sticker-renderer",
  7632.           "yt-live-chat-donation-announcement-renderer",
  7633.           "yt-live-chat-moderation-message-renderer",
  7634.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  7635.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  7636.           "yt-live-chat-viewer-engagement-message-renderer",
  7637.  
  7638.           */
  7639.  
  7640.  
  7641.         ]).then(sTags => {
  7642.  
  7643.  
  7644.           mightFirstCheckOnYtInit();
  7645.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  7646.           console.log("[Begin]");
  7647.           let doMouseHook = false;
  7648.  
  7649.           const dProto = {
  7650.             isClickableChatRow111: function () {
  7651.               return (
  7652.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  7653.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  7654.               ); // follow .onItemTap(a)
  7655.             }
  7656.           };
  7657.  
  7658.           for (const sTag of sTags) { // ##tag##
  7659.  
  7660.  
  7661.             (() => {
  7662.  
  7663.               const tag = sTag;
  7664.               const dummy = document.createElement(tag);
  7665.  
  7666.               const cProto = getProto(dummy);
  7667.               if (!cProto || !cProto.attached) {
  7668.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  7669.                 return;
  7670.               }
  7671.  
  7672.               const dCnt = insp(dummy);
  7673.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  7674.  
  7675.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  7676.  
  7677.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  7678.  
  7679.                 if (toHookDocumentMouseDown) {
  7680.                   doMouseHook = true;
  7681.                 }
  7682.  
  7683.                 console.log("shouldSupportWholeItemClick Y", tag);
  7684.  
  7685.               } else {
  7686.  
  7687.                 console.log("shouldSupportWholeItemClick N", tag);
  7688.               }
  7689.  
  7690.  
  7691.             })();
  7692.  
  7693.           }
  7694.  
  7695.  
  7696.           if (doMouseHook) {
  7697.  
  7698.             hookDocumentMouseDownSetupFn();
  7699.  
  7700.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  7701.           }
  7702.  
  7703.           console.log("[End]");
  7704.  
  7705.           console.groupEnd();
  7706.  
  7707.  
  7708.         }).catch(console.warn);
  7709.  
  7710.  
  7711.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  7712.  
  7713.  
  7714.       }
  7715.  
  7716.       if (NO_ITEM_TAP_FOR_NON_STATIONARY_TAP) {
  7717.         let targetElementCntWR = null;
  7718.         let _e0 = null;
  7719.         document.addEventListener('mousedown', (e) => {
  7720.           if (!e || !e.isTrusted) return;
  7721.           let element = e.target;
  7722.           for (; element instanceof HTMLElement; element = element.parentNode) {
  7723.             if (element.is) break;
  7724.           }
  7725.           if (!element || !element.is) return;
  7726.           const cnt = insp(element);
  7727.           if (typeof cnt.onItemTap === 'function') {
  7728.             cnt._onItemTap_isNonStationary = 0;
  7729.             const cProto = getProto(element);
  7730.             if (!cProto.onItemTap366 && typeof cProto.onItemTap === 'function' && cProto.onItemTap.length === 1) {
  7731.               cProto.onItemTap366 = cProto.onItemTap;
  7732.               cProto.onItemTap = function (a) {
  7733.                 const t = this._onItemTap_isNonStationary;
  7734.                 this._onItemTap_isNonStationary = 0;
  7735.                 if (t > Date.now()) return;
  7736.                 return this.onItemTap366.apply(this, arguments)
  7737.               }
  7738.             }
  7739.             _e0 = e;
  7740.             targetElementCntWR = mWeakRef(cnt);
  7741.           } else {
  7742.             _e0 = null;
  7743.             targetElementCntWR = null;
  7744.           }
  7745.         }, { capture: true, passive: true });
  7746.  
  7747.         document.addEventListener('mouseup', (e) => {
  7748.           if (!e || !e.isTrusted) return;
  7749.           const e0 = _e0;
  7750.           _e0 = null;
  7751.           if (!e0) return;
  7752.           const cnt = kRef(targetElementCntWR);
  7753.           targetElementCntWR = null;
  7754.           if (!cnt) return;
  7755.           if (e.timeStamp - e0.timeStamp > TAP_ACTION_DURATION) {
  7756.             cnt._onItemTap_isNonStationary = Date.now() + 40;
  7757.           } else if ((window.getSelection() + "").trim().replace(/[\u2000-\u200a\u202f\u2800\u200B\u200C\u200D\uFEFF]+/g, '').length >= 1) {
  7758.             cnt._onItemTap_isNonStationary = Date.now() + 40;
  7759.           } else {
  7760.             const dx = e.clientX - e0.clientX;
  7761.             const dy = e.clientY - e0.clientY;
  7762.             const dd = Math.sqrt(dx * dx + dy * dy);
  7763.             const ddmm = px2mm(dd);
  7764.             if (ddmm > 1.0) {
  7765.               cnt._onItemTap_isNonStationary = Date.now() + 40;
  7766.             } else {
  7767.               cnt._onItemTap_isNonStationary = 0;
  7768.             }
  7769.           }
  7770.         }, { capture: true, passive: true });
  7771.  
  7772.       }
  7773.  
  7774.  
  7775.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  7776.  
  7777.         let rr = null;
  7778.         const p1 = new Promise(resolve => {
  7779.           rr = resolve;
  7780.         });
  7781.  
  7782.         const p1unlock = () => {
  7783.           const f = rr;
  7784.           if (f) {
  7785.             rr = null;
  7786.             f();
  7787.           }
  7788.         }
  7789.  
  7790.         return {
  7791.           p1,
  7792.           p1unlock,
  7793.           assignLock: (targetCnt, timeout) => {
  7794.             targetCnt.__showContextMenu_assign_lock__(p1);
  7795.             if (timeout) setTimeout(p1unlock, timeout);
  7796.           }
  7797.         }
  7798.  
  7799.       }
  7800.  
  7801.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  7802.  
  7803.         document.addEventListener('mousedown', function (evt) {
  7804.  
  7805.           const maxloopDOMTreeElements = 4;
  7806.           const maxloopYtCompontents = 4;
  7807.           let j1 = 0;
  7808.           let j2 = 0;
  7809.           let target = (evt || 0).target || 0;
  7810.           if (!target) return;
  7811.  
  7812.  
  7813.           while (target instanceof HTMLElement) {
  7814.             if (++j1 > maxloopDOMTreeElements) break;
  7815.             if (typeof (target.is || insp(target).is || null) === 'string') break;
  7816.             target = nodeParent(target);
  7817.           }
  7818.           const components = [];
  7819.           while (target instanceof HTMLElement) {
  7820.             if (++j2 > maxloopYtCompontents) break;
  7821.             const cnt = insp(target);
  7822.             if (typeof (target.is || cnt.is || null) === 'string') {
  7823.               components.push(target);
  7824.             }
  7825.             if (typeof cnt.showContextMenu === 'function') break;
  7826.             target = target.parentComponent || cnt.parentComponent || null;
  7827.           }
  7828.           if (!(target instanceof HTMLElement)) return;
  7829.           const targetCnt = insp(target);
  7830.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  7831.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  7832.             return;
  7833.           }
  7834.  
  7835.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  7836.           if (!endpoint) return;
  7837.           if (targetCnt.opened || !targetCnt.isAttached) return;
  7838.  
  7839.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  7840.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  7841.           }
  7842.  
  7843.           const targetDollar = indr(target);
  7844.  
  7845.           let doPreRequest = false;
  7846.           if (components.length >= 2 && components[0].id === 'menu-button' && (targetDollar || 0)['menu-button'] === components[0]) {
  7847.             doPreRequest = true;
  7848.           } else if (components.length === 1 && components[0] === target) {
  7849.             doPreRequest = true;
  7850.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (targetDollar || 0)['author-photo'] === components[0]) {
  7851.             doPreRequest = true;
  7852.           }
  7853.           if (doPreRequest === false) {
  7854.             console.log('doPreRequest = fasle on showContextMenu', components);
  7855.             return;
  7856.           }
  7857.  
  7858.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  7859.  
  7860.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  7861.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  7862.             return;
  7863.           }
  7864.  
  7865.  
  7866.           const onSuccess = (a) => {
  7867.             /*
  7868.  
  7869.               dQ() && (a = a.response);
  7870.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  7871.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  7872.  
  7873.             */
  7874.  
  7875.             a = a.response || a;
  7876.  
  7877.             if (!a) {
  7878.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  7879.               return;
  7880.             }
  7881.  
  7882.             let z = null;
  7883.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  7884.  
  7885.             if (z) {
  7886.               a = z;
  7887.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  7888.             }
  7889.  
  7890.           };
  7891.           const onFailure = (a) => {
  7892.  
  7893.             /*
  7894.  
  7895.               if (a instanceof Error || a instanceof Object || a instanceof String)
  7896.                   var b = a;
  7897.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  7898.  
  7899.             */
  7900.  
  7901.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  7902.             // console.log('onFailure', a)
  7903.  
  7904.           };
  7905.  
  7906.           if (doPreRequest) {
  7907.  
  7908.             let propertyCounter = 0;
  7909.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  7910.             const p1Timeout = 800;
  7911.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  7912.  
  7913.             try {
  7914.  
  7915.               const onSuccessHelperFn = function () {
  7916.                 pm1.p1unlock();
  7917.                 if (propertyCounter !== 5) {
  7918.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  7919.                   return;
  7920.                 }
  7921.                 if (this[proxyKey] !== targetCnt) {
  7922.                   console.log('Error in prerequest for showContextMenu.this');
  7923.                   return;
  7924.                 }
  7925.                 onSuccess(...arguments);
  7926.               };
  7927.               const onFailureHelperFn = function () {
  7928.                 pm1.p1unlock();
  7929.                 if (propertyCounter !== 5) {
  7930.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  7931.                   return;
  7932.                 }
  7933.                 if (this[proxyKey] !== targetCnt) {
  7934.                   console.log('Error in prerequest for showContextMenu.this');
  7935.                   return;
  7936.                 }
  7937.                 onFailure(...arguments);
  7938.  
  7939.               }
  7940.               const fakeTargetCnt = new Proxy({
  7941.                 __showContextMenu_forceNativeRequest__: 1,
  7942.                 __showContextMenu_sync_mode_request__: 1,
  7943.                 get handleGetContextMenuResponse_() {
  7944.                   propertyCounter += 2;
  7945.                   return onSuccessHelperFn;
  7946.                 },
  7947.                 get handleGetContextMenuError() {
  7948.                   propertyCounter += 3;
  7949.                   return onFailureHelperFn;
  7950.                 }
  7951.               }, {
  7952.                 get(_, key, receiver) {
  7953.                   if (key in _) return _[key];
  7954.                   if (key === proxyKey) return targetCnt;
  7955.  
  7956.                   let giveNative = false;
  7957.                   if (key in targetCnt) {
  7958.                     if (key === 'data') giveNative = true;
  7959.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  7960.                   }
  7961.                   if (giveNative) return targetCnt[key];
  7962.                 }
  7963.               });
  7964.  
  7965.               const fakeEvent = (() => {
  7966.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  7967.                 const nf = function () { }
  7968.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  7969.  
  7970.                 return {
  7971.                   type: 'tap',
  7972.                   eventPhase: 0,
  7973.                   isTrusted: false,
  7974.                   __composed: true,
  7975.                   bubbles, cancelable, cancelBubble, timeStamp,
  7976.                   target, srcElement, defaultPrevented, currentTarget, composed,
  7977.                   stopPropagation, stopImmediatePropagation, preventDefault
  7978.                 };
  7979.               })(evt);
  7980.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  7981.  
  7982.  
  7983.             } catch (e) {
  7984.               console.warn(e);
  7985.               propertyCounter = 7;
  7986.  
  7987.             }
  7988.             if (propertyCounter !== 5) {
  7989.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  7990.               return;
  7991.             }
  7992.  
  7993.             pm1.assignLock(targetCnt, p1Timeout);
  7994.  
  7995.           }
  7996.  
  7997.  
  7998.  
  7999.  
  8000.  
  8001.  
  8002.         }, true);
  8003.  
  8004.  
  8005.       }
  8006.  
  8007.  
  8008.  
  8009.       /*
  8010.  
  8011.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  8012.  
  8013.       */
  8014.  
  8015.       whenDefinedMultiple([
  8016.         "yt-live-chat-ticker-sponsor-item-renderer",
  8017.         "yt-live-chat-banner-header-renderer",
  8018.         "yt-live-chat-text-message-renderer",
  8019.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  8020.         "ytd-sponsorships-live-chat-header-renderer",
  8021.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  8022.  
  8023.         "yt-live-chat-paid-sticker-renderer",
  8024.         "yt-live-chat-viewer-engagement-message-renderer",
  8025.         "yt-live-chat-paid-message-renderer"
  8026.  
  8027.  
  8028.  
  8029.  
  8030.       ]).then(sTags => {
  8031.  
  8032.         mightFirstCheckOnYtInit();
  8033.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  8034.         console.log("[Begin]");
  8035.  
  8036.  
  8037.         const __showContextMenu_mutex__ = new Mutex();
  8038.         let __showContextMenu_mutex_unlock__ = null;
  8039.         let lastShowMenuTarget = null;
  8040.  
  8041.  
  8042.  
  8043.  
  8044.         const wm37 = new WeakMap();
  8045.  
  8046.         const dProto = {
  8047.  
  8048.  
  8049.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  8050.  
  8051.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  8052.             if (a) {
  8053.               if (doDeepCopy) a = deepCopy(a);
  8054.               wm37.set(endpoint, a);
  8055.             } else {
  8056.               wm37.remove(endpoint);
  8057.             }
  8058.           },
  8059.           __getCachedEndpointData__: function (endpoint) {
  8060.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  8061.             if (endpoint) return wm37.get(endpoint);
  8062.             return null;
  8063.           },
  8064.           /** @type {(resolvedEndpoint: any) => void 0} */
  8065.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  8066.  
  8067.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  8068.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  8069.             Promise.resolve(resolvedEndpoint).then(() => {
  8070.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  8071.               this.showContextMenu_(resolvedEndpoint);
  8072.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  8073.             });
  8074.  
  8075.  
  8076.           },
  8077.  
  8078.  
  8079.  
  8080.           showContextMenuForCacheReopen: function (a) {
  8081.             if (!this.__showContextMenu_forceNativeRequest__) {
  8082.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  8083.               if (endpoint) {
  8084.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  8085.                 if (resolvedEndpoint) {
  8086.                   this.__showCachedContextMenu__(resolvedEndpoint);
  8087.                   a && a.stopPropagation()
  8088.                   return;
  8089.                 }
  8090.               }
  8091.             }
  8092.             return this.showContextMenu37(a);
  8093.           },
  8094.  
  8095.           showContextMenuForCacheReopen_: function (a) {
  8096.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  8097.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  8098.               if (endpoint) {
  8099.                 const f = this.__cacheResolvedEndpointData__;
  8100.                 if (typeof f === 'function') f(endpoint, a, true);
  8101.               }
  8102.             }
  8103.             return this.showContextMenu37_(a);
  8104.           },
  8105.  
  8106.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  8107.  
  8108.           showContextMenuWithDisableScroll: function (a) {
  8109.  
  8110.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  8111.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  8112.  
  8113.               const parentComponent = this.parentComponent;
  8114.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  8115.                 parentComponent.contextMenuOpen = true; // computeAllowScroll_(contextMenuOpen, moderationModeEnabled): allowScroll = !(contextMenuOpen || moderationModeEnabled)
  8116.               }
  8117.             }
  8118.  
  8119.             return this.showContextMenu48.apply(this, arguments);
  8120.  
  8121.           },
  8122.  
  8123.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  8124.  
  8125.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  8126.             return __showContextMenu_mutex_unlock__ === null;
  8127.           },
  8128.  
  8129.           __showContextMenu_assign_lock__: function (p) {
  8130.  
  8131.             const mutex = __showContextMenu_mutex__;
  8132.  
  8133.             mutex.lockWith(unlock => {
  8134.               p.then(unlock);
  8135.             });
  8136.  
  8137.           },
  8138.  
  8139.           showContextMenuWithMutex: function (a) {
  8140.             lastShowMenuTarget = this;
  8141.  
  8142.             if (this.__showContextMenu_sync_mode_request__) {
  8143.  
  8144.               return this.showContextMenu47(a);
  8145.             } else {
  8146.  
  8147.               const mutex = __showContextMenu_mutex__;
  8148.  
  8149.               mutex.lockWith(unlock => {
  8150.                 if (lastShowMenuTarget !== this) {
  8151.                   unlock();
  8152.                   return;
  8153.                 }
  8154.  
  8155.                 setTimeout(unlock, 800); // in case network failure
  8156.                 __showContextMenu_mutex_unlock__ = unlock;
  8157.                 try {
  8158.                   this.showContextMenu47(a);
  8159.                 } catch (e) {
  8160.                   console.warn(e);
  8161.                   unlock(); // in case function script error
  8162.                 }
  8163.  
  8164.               });
  8165.  
  8166.             }
  8167.  
  8168.  
  8169.           },
  8170.  
  8171.           showContextMenuWithMutex_: function (a) {
  8172.  
  8173.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  8174.               __showContextMenu_mutex_unlock__();
  8175.               __showContextMenu_mutex_unlock__ = null;
  8176.             }
  8177.             return this.showContextMenu47_(a);
  8178.  
  8179.           }
  8180.  
  8181.         }
  8182.  
  8183.         for (const tag of sTags) { // ##tag##
  8184.  
  8185.           (() => {
  8186.  
  8187.             const dummy = document.createElement(tag);
  8188.  
  8189.             const cProto = getProto(dummy);
  8190.             if (!cProto || !cProto.attached) {
  8191.               console.warn(`proto.attached for ${tag} is unavailable.`);
  8192.               return;
  8193.             }
  8194.  
  8195.             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) {
  8196.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  8197.               cProto.showContextMenu37 = cProto.showContextMenu;
  8198.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  8199.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  8200.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  8201.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  8202.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  8203.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  8204.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  8205.             } else {
  8206.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  8207.             }
  8208.  
  8209.             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) {
  8210.               cProto.showContextMenu48 = cProto.showContextMenu;
  8211.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  8212.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  8213.             } else {
  8214.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  8215.             }
  8216.  
  8217.             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) {
  8218.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  8219.               cProto.showContextMenu47 = cProto.showContextMenu;
  8220.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  8221.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  8222.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  8223.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  8224.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  8225.             } else {
  8226.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  8227.             }
  8228.  
  8229.           })();
  8230.  
  8231.         }
  8232.  
  8233.         console.log("[End]");
  8234.  
  8235.         console.groupEnd();
  8236.  
  8237.       }).catch(console.warn);
  8238.  
  8239.  
  8240.  
  8241.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  8242.  
  8243.         mightFirstCheckOnYtInit();
  8244.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  8245.         console.log("[Begin]");
  8246.         (() => {
  8247.  
  8248.           const tag = "tp-yt-iron-dropdown";
  8249.           const dummy = document.createElement(tag);
  8250.  
  8251.           const cProto = getProto(dummy);
  8252.           if (!cProto || !cProto.attached) {
  8253.             console.warn(`proto.attached for ${tag} is unavailable.`);
  8254.             return;
  8255.           }
  8256.  
  8257.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  8258.             cProto.__deraf_hn__ = function (sId, fn) {
  8259.               const rhKey = `_rafHandler_${sId}`;
  8260.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  8261.               if (m.has(fn)) return m.get(fn);
  8262.               const resFn = () => {
  8263.                 this.__rafs[sId] = null;
  8264.                 fn.call(this)
  8265.               };
  8266.               m.set(fn, resFn);
  8267.               m.set(resFn, resFn);
  8268.               return resFn;
  8269.             };
  8270.             cProto.__deraf34 = cProto.__deraf;
  8271.             cProto.__deraf = function (a, b) { // sId, fn
  8272.               let c = this.__rafs;
  8273.               null !== c[a] && cancelAnimationFrame(c[a]);
  8274.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  8275.             };
  8276.             console.log("USE_VANILLA_DEREF - OK");
  8277.           } else {
  8278.             console.log("USE_VANILLA_DEREF - NG");
  8279.           }
  8280.  
  8281.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  8282.             cProto.__deraf66 = cProto.__deraf;
  8283.             cProto.__deraf = function (sId, fn) {
  8284.               if (this.__byPassRAF__) {
  8285.                 Promise.resolve().then(() => {
  8286.                   fn.call(this);
  8287.                 });
  8288.               }
  8289.               let r = this.__deraf66.apply(this, arguments);
  8290.               return r;
  8291.             }
  8292.             console.log("FIX_DROPDOWN_DERAF - OK");
  8293.           } else {
  8294.             console.log("FIX_DROPDOWN_DERAF - NG");
  8295.           }
  8296.  
  8297.  
  8298.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  8299.  
  8300.             let lastClose = null;
  8301.             let lastOpen = null;
  8302.             let cid = 0;
  8303.  
  8304.             cProto.__mtChanged__ = function (b) {
  8305.  
  8306.               Promise.resolve().then(() => {
  8307.                 this._applyFocus();
  8308.               }).then(() => {
  8309.                 b ? this._renderOpened() : this._renderClosed();
  8310.               }).catch(console.warn);
  8311.  
  8312.             };
  8313.  
  8314.             const __moChanged__ = () => {
  8315.               if (!cid) return;
  8316.               // console.log(553, !!lastOpen, !!lastClose);
  8317.               cid = 0;
  8318.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  8319.                 lastOpen.__mtChanged__(1)
  8320.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  8321.                 lastClose.__mtChanged__(0);
  8322.               }
  8323.               lastOpen = null;
  8324.               lastClose = null;
  8325.             };
  8326.  
  8327.  
  8328.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  8329.               cProto._openedChanged66 = cProto._openedChanged;
  8330.               cProto._openedChanged = function () {
  8331.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  8332.                 this.__byPassRAF__ = true;
  8333.                 let r = this._openedChanged66.apply(this, arguments);
  8334.                 this.__byPassRAF__ = false;
  8335.                 return r;
  8336.               }
  8337.             }
  8338.  
  8339.             const pSetGet = (key, pdThis, pdBase) => {
  8340.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  8341.               return {
  8342.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  8343.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  8344.               };
  8345.             };
  8346.  
  8347.             cProto.__modifiedMenuPropsFn__ = function () {
  8348.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  8349.               const pdBase = Object.getOwnPropertyDescriptors(this)
  8350.  
  8351.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  8352.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  8353.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  8354.  
  8355.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  8356.                 console.warn('there is setter/getter for autoFitOnAttach');
  8357.                 return;
  8358.               }
  8359.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  8360.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  8361.                 return;
  8362.               }
  8363.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  8364.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  8365.                 return;
  8366.               }
  8367.  
  8368.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  8369.  
  8370.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  8371.  
  8372.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  8373.  
  8374.               Object.defineProperties(this, {
  8375.                 autoFitOnAttach: {
  8376.                   get() {
  8377.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  8378.                     return autoFitOnAttach;
  8379.                   },
  8380.                   set(nv) {
  8381.                     autoFitOnAttach = nv;
  8382.                     return true;
  8383.                   },
  8384.                   enumerable: true,
  8385.                   configurable: true
  8386.                 }, expandSizingTargetForScrollbars: {
  8387.                   get() {
  8388.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  8389.                     return expandSizingTargetForScrollbars;
  8390.                   },
  8391.                   set(nv) {
  8392.                     expandSizingTargetForScrollbars = nv;
  8393.                     return true;
  8394.                   },
  8395.                   enumerable: true,
  8396.                   configurable: true
  8397.                 }, allowOutsideScroll: {
  8398.                   get() {
  8399.                     if (this._modifiedMenuPropOn062__) return true;
  8400.                     return allowOutsideScroll;
  8401.                   },
  8402.                   set(nv) {
  8403.                     allowOutsideScroll = nv;
  8404.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  8405.                     return true;
  8406.                   },
  8407.                   enumerable: true,
  8408.                   configurable: true
  8409.                 }
  8410.               })
  8411.             };
  8412.  
  8413.             /*
  8414.                // ***** position() to be changed. *****
  8415.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  8416.  
  8417.                   overflow: visible !important;
  8418.                   min-width: max-content !important;
  8419.                   max-width: max-content !important;
  8420.                   max-height: max-content !important;
  8421.                   min-height: max-content !important;
  8422.                   white-space: nowrap;
  8423.               }
  8424.  
  8425.             */
  8426.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  8427.  
  8428.               let m34 = 0;
  8429.               cProto.__refitByPosition__ = function () {
  8430.                 m34++;
  8431.                 if (m34 <= 0) m34 = 0;
  8432.                 if (m34 !== 1) return;
  8433.                 const hostElement = this.hostElement || this;
  8434.                 if (document.visibilityState === 'visible') {
  8435.                   const sizingTarget = this.sizingTarget;
  8436.                   if (!sizingTarget) {
  8437.                     m34 = 0;
  8438.                     return;
  8439.                   }
  8440.                   hostElement.setAttribute('rNgzQ', '');
  8441.                   sizingTarget.setAttribute('rNgzQ', '');
  8442.  
  8443.                   const gn = () => {
  8444.                     hostElement.removeAttribute('rNgzQ');
  8445.                     sizingTarget.removeAttribute('rNgzQ');
  8446.                   }
  8447.  
  8448.                   const an = async () => {
  8449.                     while (m34 >= 1) {
  8450.                       await renderReadyPn(sizingTarget);
  8451.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  8452.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  8453.                       }
  8454.                       m34--;
  8455.                     }
  8456.                     m34 = 0;
  8457.                     Promise.resolve().then(gn);
  8458.                   }
  8459.                   setTimeout(an, 4); // wait those resizing function calls
  8460.  
  8461.  
  8462.                 } else {
  8463.                   m34 = 0;
  8464.                 }
  8465.               }
  8466.               cProto.position34 = cProto.position
  8467.               cProto.position = function () {
  8468.                 if (this._positionInitialize_) {
  8469.                   this._positionInitialize_ = 0;
  8470.                   this.__refitByPosition__();
  8471.                 }
  8472.                 let r = cProto.position34.apply(this, arguments);
  8473.                 return r;
  8474.               }
  8475.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  8476.  
  8477.             } else {
  8478.  
  8479.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  8480.  
  8481.             }
  8482.  
  8483.  
  8484.  
  8485.             cProto.__openedChanged = function () {
  8486.               this._positionInitialize_ = 1;
  8487.               // this.removeAttribute('horizontal-align')
  8488.               // this.removeAttribute('vertical-align')
  8489.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  8490.                 this.__menuTypeCheck__ = true;
  8491.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  8492.                   this._modifiedMenuPropOn062__ = false;
  8493.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  8494.                   // this.autoFitOnAttach = true;
  8495.                   // this.expandSizingTargetForScrollbars = true;
  8496.                   // this.allowOutsideScroll = true;
  8497.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  8498.                   this.__modifiedMenuPropsFn__();
  8499.                   // this.constrain= function(){}
  8500.                   // this.position= function(){}
  8501.  
  8502.                   // this.autoFitOnAttach = true;
  8503.                   // this.expandSizingTargetForScrollbars = true;
  8504.                   // this.allowOutsideScroll = true;
  8505.                 }
  8506.               }
  8507.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  8508.                 let newValue = null;
  8509.                 const positionTarget = this.positionTarget;
  8510.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  8511.                   if (this._modifiedMenuPropOn062__ === false) {
  8512.                     newValue = true;
  8513.                   }
  8514.                 } else if (this._modifiedMenuPropOn062__ === true) {
  8515.                   newValue = false;
  8516.                 }
  8517.                 if (newValue !== null) {
  8518.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  8519.                   this._modifiedMenuPropOn062__ = newValue;
  8520.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  8521.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  8522.                 }
  8523.               }
  8524.  
  8525.               if (this.opened) {
  8526.  
  8527.                 Promise.resolve().then(() => {
  8528.  
  8529.                   this._prepareRenderOpened();
  8530.                 }).then(() => {
  8531.                   this._manager.addOverlay(this);
  8532.                   if (this._manager._overlays.length === 1) {
  8533.                     lastOpen = this;
  8534.                     lastClose = null;
  8535.                   } else {
  8536.                     return 1;
  8537.                   }
  8538.                   // if (cid) {
  8539.                   //   clearTimeout(cid);
  8540.                   //   cid = -1;
  8541.                   //   this.__moChanged__();
  8542.                   //   cid = 0;
  8543.                   // } else {
  8544.                   //   cid = -1;
  8545.                   //   this.__moChanged__();
  8546.                   //   cid = 0;
  8547.                   // }
  8548.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  8549.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  8550.                   // cid = cid || setTimeout(__moChanged__, delay1);
  8551.                   cid = cid || requestAnimationFrame(__moChanged__);
  8552.                 }).then((r) => {
  8553.  
  8554.                   if (r) this.__mtChanged__(1);
  8555.                 }).catch(console.warn);
  8556.  
  8557.               } else {
  8558.                 Promise.resolve().then(() => {
  8559.                   this._manager.removeOverlay(this);
  8560.                   if (this._manager._overlays.length === 0) {
  8561.                     lastClose = this;
  8562.                     lastOpen = null;
  8563.                   } else {
  8564.                     return 1;
  8565.                   }
  8566.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  8567.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  8568.                   // cid = cid || setTimeout(__moChanged__, delay1);
  8569.                   cid = cid || requestAnimationFrame(__moChanged__);
  8570.                 }).then((r) => {
  8571.                   if (r) this.__mtChanged__(0);
  8572.                 }).catch(console.warn);
  8573.  
  8574.               }
  8575.  
  8576.             }
  8577.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  8578.  
  8579.           } else {
  8580.  
  8581.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  8582.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  8583.  
  8584.           }
  8585.  
  8586.  
  8587.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  8588.  
  8589.             cProto.__openedChanged82 = cProto.__openedChanged;
  8590.  
  8591.  
  8592.             cProto.__openedChanged = function () {
  8593.               const positionTarget = this.positionTarget;
  8594.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  8595.               return this.__openedChanged82.apply(this, arguments);
  8596.             }
  8597.           }
  8598.  
  8599.  
  8600.         })();
  8601.  
  8602.         console.log("[End]");
  8603.  
  8604.         console.groupEnd();
  8605.  
  8606.       }).catch(console.warn);
  8607.  
  8608.  
  8609.  
  8610.       FIX_ToggleRenderPolymerControllerExtractionBug && customElements.whenDefined('yt-live-chat-toggle-renderer').then(() => {
  8611.  
  8612.         mightFirstCheckOnYtInit();
  8613.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-toggle-renderer hacks");
  8614.         console.log("[Begin]");
  8615.         (() => {
  8616.  
  8617.           const tag = "yt-live-chat-toggle-renderer";
  8618.           const dummy = document.createElement(tag);
  8619.  
  8620.           const cProto = getProto(dummy);
  8621.           if (!cProto || !cProto.attached) {
  8622.             console.warn(`proto.attached for ${tag} is unavailable.`);
  8623.             return;
  8624.           }
  8625.  
  8626.         })();
  8627.  
  8628.         console.log("[End]");
  8629.         console.groupEnd();
  8630.  
  8631.       });
  8632.  
  8633.  
  8634.  
  8635.  
  8636.       /*
  8637.  
  8638.  
  8639.  
  8640.  
  8641.  
  8642.           var FU = function() {
  8643.               var a = this;
  8644.               this.nextHandle_ = 1;
  8645.               this.clients_ = {};
  8646.               this.JSC$10323_callbacks_ = {};
  8647.               this.unsubscribeAsyncHandles_ = {};
  8648.               this.subscribe = vl(function(b, c, d) {
  8649.                   var e = Geb(b);
  8650.                   if (e in a.clients_)
  8651.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  8652.                   else {
  8653.                       a: {
  8654.                           var h = Geb(b), l;
  8655.                           for (l in a.unsubscribeAsyncHandles_) {
  8656.                               var m = a.clients_[l];
  8657.                               if (m instanceof KO) {
  8658.                                   delete a.clients_[l];
  8659.                                   delete a.JSC$10323_callbacks_[l];
  8660.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  8661.                                   delete a.unsubscribeAsyncHandles_[l];
  8662.                                   i6a(m);
  8663.                                   m.objectId_ = new FQa(h);
  8664.                                   m.register();
  8665.                                   d = m;
  8666.                                   break a
  8667.                               }
  8668.                           }
  8669.                           d.objectSource = b.invalidationId.objectSource;
  8670.                           d.objectId = h;
  8671.                           if (b = b.webAuthConfigurationData)
  8672.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  8673.                               b.pageId && (d.pageId = b.pageId);
  8674.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  8675.                           d.register()
  8676.                       }
  8677.                       a.clients_[e] = d;
  8678.                       a.JSC$10323_callbacks_[e] = {}
  8679.                   }
  8680.                   d = a.nextHandle_++;
  8681.                   a.JSC$10323_callbacks_[e][d] = c;
  8682.                   return d
  8683.               })
  8684.           };
  8685.           FU.prototype.unsubscribe = function(a, b) {
  8686.               var c = Geb(a);
  8687.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  8688.               !this.JSC$10323_callbacks_[c].length)) {
  8689.                   var d = this.clients_[c];
  8690.                   b = Jq.run(function() {
  8691.                       ei(d);
  8692.                       delete this.clients_[c];
  8693.                       delete this.unsubscribeAsyncHandles_[c]
  8694.                   }
  8695.                   .bind(this));
  8696.                   this.unsubscribeAsyncHandles_[c] = b
  8697.               }
  8698.           }
  8699.           ;
  8700.  
  8701.  
  8702.       */
  8703.  
  8704.  
  8705.       const onManagerFound = (dummyManager) => {
  8706.         if (!dummyManager || typeof dummyManager !== 'object') return;
  8707.  
  8708.         const mgrProto = dummyManager.constructor.prototype;
  8709.  
  8710.         let keyCallbackStore = '';
  8711.         for (const [key, v] of Object.entries(dummyManager)) {
  8712.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  8713.         }
  8714.  
  8715.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  8716.  
  8717.         if (mgrProto.unsubscribe16) return;
  8718.  
  8719.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  8720.  
  8721.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  8722.         console.log("[Begin]");
  8723.  
  8724.         const isEmptyObject = ((obj) => (firstKey(obj) === null));
  8725.  
  8726.         const idMapper = new Map();
  8727.  
  8728.         const convertId = function (objectId) {
  8729.           if (!objectId || typeof objectId !== 'string') return null;
  8730.  
  8731.           let result = idMapper.get(objectId)
  8732.           if (result) return result;
  8733.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  8734.           idMapper.set(objectId, result)
  8735.           return result;
  8736.         }
  8737.  
  8738.  
  8739.         const rafHandleHolder = [];
  8740.  
  8741.         let pzw = 0;
  8742.         let lza = 0;
  8743.         const rafHandlerFn = () => {
  8744.           pzw = 0;
  8745.           if (rafHandleHolder.length === 1) {
  8746.             const f = rafHandleHolder[0];
  8747.             rafHandleHolder.length = 0;
  8748.             f();
  8749.           } else if (rafHandleHolder.length > 1) {
  8750.             const arr = rafHandleHolder.slice(0);
  8751.             rafHandleHolder.length = 0;
  8752.             for (const fn of arr) fn();
  8753.           }
  8754.         };
  8755.  
  8756.  
  8757.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  8758.  
  8759.           const checkIntegrityForSubscribe = (mgr) => {
  8760.             if (mgr
  8761.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  8762.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  8763.  
  8764.               const ns = new Set(Object.keys(mgr));
  8765.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  8766.  
  8767.               if (ns.size >= 6 && ms.size >= 4) {
  8768.                 // including 'subscribe18'
  8769.                 // 'unsubscribe16', 'subscribe19'
  8770.  
  8771.                 let r = 0;
  8772.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  8773.                   r += ns.has(k) ? 1 : 0;
  8774.                 }
  8775.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  8776.                   r += ms.has(k) ? 1 : 0;
  8777.                 }
  8778.                 if (r === 10) {
  8779.                   const isObject = (c) => (c || 0).constructor === Object;
  8780.  
  8781.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  8782.  
  8783.                     return true;
  8784.                   }
  8785.  
  8786.  
  8787.                 }
  8788.  
  8789.               }
  8790.  
  8791.  
  8792.             }
  8793.             return false;
  8794.           }
  8795.  
  8796.           mgrProto.subscribe19 = function (o, f, opts) {
  8797.  
  8798.             const ct_clients_ = this.clients_ || 0;
  8799.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  8800.  
  8801.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  8802.  
  8803.             let objectId = ((o || 0).invalidationId || 0).objectId;
  8804.             if (!objectId) return this.subscribe18.apply(this, arguments);
  8805.             objectId = convertId(objectId);
  8806.  
  8807.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  8808.  
  8809.             if (ct_clients_[objectId]) {
  8810.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  8811.             }
  8812.  
  8813.             return this.subscribe18.apply(this, arguments);
  8814.           }
  8815.  
  8816.           mgrProto.unsubscribe = function (o, d) {
  8817.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  8818.               this.subscribe18 = this.subscribe;
  8819.               this.subscribe = this.subscribe19;
  8820.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  8821.             }
  8822.             const ct_clients_ = this.clients_;
  8823.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  8824.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  8825.  
  8826.             let objectId = ((o || 0).invalidationId || 0).objectId;
  8827.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  8828.  
  8829.             objectId = convertId(objectId);
  8830.  
  8831.  
  8832.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  8833.  
  8834.             const callbacks = this[keyCallbackStore] || 0;
  8835.             const callbackObj = callbacks[objectId] || 0;
  8836.  
  8837.  
  8838.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  8839.               const w = ct_clients_[objectId];
  8840.               --lza;
  8841.               if (lza < -1e9) lza = -1;
  8842.               const qta = lza;
  8843.               rafHandleHolder.push(() => {
  8844.                 if (qta === ct_handles_[objectId]) {
  8845.                   const o = {
  8846.                     callbacks, callbackObj,
  8847.                     client: ct_clients_[objectId],
  8848.                     handle: ct_handles_[objectId]
  8849.                   };
  8850.                   let p = 0;
  8851.                   try {
  8852.                     if (ct_clients_[objectId] === w) {
  8853.                       w && "function" === typeof w.dispose && w.dispose();
  8854.                       delete ct_clients_[objectId];
  8855.                       delete ct_handles_[objectId];
  8856.                       p = 1;
  8857.                     } else {
  8858.                       // w && "function" === typeof w.dispose && w.dispose();
  8859.                       // delete ct_clients_[objectId];
  8860.                       // delete ct_handles_[objectId];
  8861.                       p = 2;
  8862.                     }
  8863.                   } catch (e) {
  8864.                     console.warn(e);
  8865.                   }
  8866.                   console.log(`unsubscribed: ${p}`, this, o);
  8867.                 }
  8868.               });
  8869.               ct_handles_[objectId] = qta;
  8870.               if (pzw === 0) {
  8871.                 pzw = requestAnimationFrame(rafHandlerFn);
  8872.               }
  8873.             }
  8874.           }
  8875.  
  8876.  
  8877.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  8878.  
  8879.         } else {
  8880.  
  8881.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  8882.         }
  8883.  
  8884.         console.log("[End]");
  8885.  
  8886.         console.groupEnd();
  8887.  
  8888.       }
  8889.  
  8890.  
  8891.  
  8892.       /*
  8893.  
  8894.  
  8895.               a.prototype.async = function(e, h) {
  8896.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  8897.               }
  8898.               ;
  8899.               a.prototype.cancelAsync = function(e) {
  8900.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  8901.               }
  8902.  
  8903.       */
  8904.  
  8905.  
  8906.       (FASTER_ICON_RENDERING && Promise.all(
  8907.         [
  8908.           customElements.whenDefined("yt-icon-shape"),
  8909.           customElements.whenDefined("yt-icon")
  8910.           //  document.createElement('icon-shape'),
  8911.         ]
  8912.       )).then(() => {
  8913.         let cq = 0;
  8914.         let dummys = [document.createElement('yt-icon-shape'), document.createElement('yt-icon')]
  8915.         for (const dummy of dummys) {
  8916.           let cProto = getProto(dummy);
  8917.           if (cProto && typeof cProto.shouldRenderIconShape === 'function' && !cProto.shouldRenderIconShape571 && cProto.shouldRenderIconShape.length === 1) {
  8918.             assertor(() => fnIntegrity(cProto.shouldRenderIconShape, '1.70.38'));
  8919.             cq++;
  8920.             cProto.shouldRenderIconShape571 = cProto.shouldRenderIconShape;
  8921.             cProto.shouldRenderIconShape = function (a) {
  8922.               if (this.isAnimatedIcon) return this.shouldRenderIconShape571(a);
  8923.               if (!this.iconType || !this.iconShapeData) return this.shouldRenderIconShape571(a);
  8924.               if (!this.iconName) return this.shouldRenderIconShape571(a);
  8925.               return false;
  8926.               // console.log(1051, this.iconType)
  8927.               // console.log(1052, this.iconShapeData)
  8928.               // console.log(1053, this.isAnimatedIcon)
  8929.             }
  8930.           }
  8931.           // if(cProto && cProto.switchTemplateAtRegistration){
  8932.           //   cProto.switchTemplateAtRegistration = false;
  8933.           // }
  8934.         }
  8935.         if (cq === 1) {
  8936.           console.log("modified shouldRenderIconShape - Y")
  8937.         } else {
  8938.           console.log("modified shouldRenderIconShape - N", cq)
  8939.         }
  8940.       });
  8941.  
  8942.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  8943.  
  8944.         let __dummyManager__ = null;
  8945.  
  8946.         mightFirstCheckOnYtInit();
  8947.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  8948.         console.log("[Begin]");
  8949.         (() => {
  8950.  
  8951.           const tag = "yt-invalidation-continuation"
  8952.           const dummy = document.createElement(tag);
  8953.  
  8954.           const cProto = getProto(dummy);
  8955.           if (!cProto || !cProto.attached) {
  8956.             console.warn(`proto.attached for ${tag} is unavailable.`);
  8957.             return;
  8958.           }
  8959.  
  8960.           const dummyManager = insp(dummy).manager_ || 0;
  8961.           __dummyManager__ = dummyManager;
  8962.  
  8963.           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) {
  8964.  
  8965.  
  8966.             const rafHub = new RAFHub();
  8967.  
  8968.             rafHub.keepRAF = true;
  8969.             cProto.async71 = cProto.async;
  8970.             cProto.cancelAsync71 = cProto.cancelAsync;
  8971.  
  8972.             // mostly for subscription timeoutMs 10000ms
  8973.             let mcw = 1; // 1, 3, 5, ...
  8974.             let arr = new Map();
  8975.  
  8976.             let __asyncInited__ = 0;
  8977.             let __timeoutStartId__ = null;
  8978.             const __asyncInit__ = () => {
  8979.  
  8980.               if (__asyncInited__) return;
  8981.               __asyncInited__ = 1;
  8982.  
  8983.               __timeoutStartId__ = setTimeout(() => { });
  8984.               mcw = __timeoutStartId__ * 2 + 1;
  8985.  
  8986.               setInterval(() => {
  8987.  
  8988.                 if (!arr.length) return;
  8989.  
  8990.                 const p = Date.now();
  8991.                 let deleteKeys = [];
  8992.                 arr.forEach((entry, key) => {
  8993.  
  8994.  
  8995.                   if (entry.cid === -1) {
  8996.                     entry.cid = -2;
  8997.                   } else if (entry.cid === -2) {
  8998.  
  8999.                     let offset = p - entry.add
  9000.                     if (offset < 0) offset = 0;
  9001.                     let delay2 = entry.delay - offset;
  9002.                     if (delay2 < 0) delay2 = 0;
  9003.                     entry.cid = setTimeout(entry.q(), delay2);
  9004.                     entry.q = null;
  9005.  
  9006.                   } else if (entry.add + entry.delay < p) {
  9007.                     deleteKeys.push(key);
  9008.  
  9009.                   }
  9010.  
  9011.                 })
  9012.  
  9013.                 for (const key of deleteKeys) arr.delete(key);
  9014.  
  9015.               }, 2000)
  9016.  
  9017.             }
  9018.  
  9019.  
  9020.             cProto.async = function (e, h) {
  9021.  
  9022.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  9023.  
  9024.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  9025.  
  9026.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  9027.  
  9028.  
  9029.               if (!this.__asyncInited__) {
  9030.                 this.__asyncInited__ = 1;
  9031.                 __asyncInit__();
  9032.               }
  9033.               mcw += 2; // 2K+3, 2K+4, ...
  9034.               if (mcw > 1e9) mcw = mcw % 1e4;
  9035.               const cid = mcw;
  9036.               const q = () => {
  9037.                 return () => {
  9038.                   console.log('async h > 8000');
  9039.                   e.call(this);
  9040.                 }
  9041.               }
  9042.               // setTimeout(q, delay)
  9043.               arr.set(cid, {
  9044.                 cid: -1, // -1 -> -2 -> cid
  9045.                 add: Date.now(),
  9046.                 q,
  9047.                 delay: h
  9048.               });
  9049.               // console.log('cid-async', cid)
  9050.               return cid;
  9051.  
  9052.             }
  9053.  
  9054.  
  9055.             cProto.cancelAsync = function (e) {
  9056.  
  9057.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  9058.  
  9059.               // console.log('cid-unasync', e)
  9060.  
  9061.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  9062.  
  9063.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  9064.  
  9065.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  9066.  
  9067.                 if (!arr.has(e)) return; // duplciated cancel
  9068.  
  9069.                 const entry = arr.get(e);
  9070.                 if (entry.cid < 0) {
  9071.                   entry.cid = 0;
  9072.                   arr.delete(e);
  9073.                 } else {
  9074.                   clearTimeout(entry.cid); // cid >= 1
  9075.                   entry.cid = 0;
  9076.                   arr.delete(e);
  9077.                 }
  9078.  
  9079.               } else {
  9080.  
  9081.                 return this.cancelAsync71(e);
  9082.  
  9083.               }
  9084.  
  9085.             }
  9086.  
  9087.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  9088.  
  9089.           } else {
  9090.             console.log("CHANGE_DATA_FLUSH_ASYNC - NOT REQUIRED");
  9091.  
  9092.           }
  9093.  
  9094.         })();
  9095.  
  9096.         console.log("[End]");
  9097.  
  9098.         console.groupEnd();
  9099.  
  9100.  
  9101.  
  9102.         onManagerFound(__dummyManager__);
  9103.  
  9104.       }).catch(console.warn);
  9105.  
  9106.  
  9107.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  9108.  
  9109.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  9110.  
  9111.           mightFirstCheckOnYtInit();
  9112.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  9113.           console.log("[Begin]");
  9114.           (() => {
  9115.  
  9116.             const tag = "yt-live-interactivity-component-background"
  9117.             const dummy = document.createElement(tag);
  9118.  
  9119.             const cProto = getProto(dummy);
  9120.             if (!cProto || !cProto.attached) {
  9121.               console.warn(`proto.attached for ${tag} is unavailable.`);
  9122.               return;
  9123.             }
  9124.  
  9125.             cProto.__toStopAfterRun__ = function (hostElement) {
  9126.               let mo = new MutationObserver(() => {
  9127.                 mo.disconnect();
  9128.                 mo.takeRecords();
  9129.                 mo = null;
  9130.                 this.lottieAnimation && this.lottieAnimation.stop(); // primary
  9131.                 foregroundPromiseFn().then(() => { // if the lottieAnimation is started with rAf triggering
  9132.                   this.lottieAnimation && this.lottieAnimation.stop(); // fallback
  9133.                 });
  9134.               });
  9135.               mo.observe(hostElement, { subtree: true, childList: true });
  9136.             }
  9137.  
  9138.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  9139.  
  9140.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  9141.               cProto.maybeLoadAnimationBackground = function () {
  9142.                 let toRun = true;
  9143.                 let stopAfterRun = false;
  9144.                 if (!this.__bypassDisableAnimationBackground__) {
  9145.                   let doFix = false;
  9146.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  9147.                     if (!this.lottieAnimation) {
  9148.                       doFix = true;
  9149.                     }
  9150.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  9151.                     doFix = true;
  9152.                   }
  9153.                   if (doFix) {
  9154.                     if (this.useAnimationBackground === true) {
  9155.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  9156.                     }
  9157.                     toRun = true;
  9158.                     stopAfterRun = true;
  9159.                   }
  9160.                 }
  9161.                 if (toRun) {
  9162.                   if (stopAfterRun && (this.hostElement instanceof HTMLElement)) {
  9163.                     this.__toStopAfterRun__(this.hostElement); // primary
  9164.                   }
  9165.                   const r = this.maybeLoadAnimationBackground77.apply(this, arguments);
  9166.                   if (stopAfterRun && this.lottieAnimation) {
  9167.                     this.lottieAnimation.stop(); // fallback if no mutation
  9168.                   }
  9169.                   return r;
  9170.                 }
  9171.               }
  9172.  
  9173.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  9174.  
  9175.             } else {
  9176.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  9177.  
  9178.             }
  9179.  
  9180.           })();
  9181.  
  9182.           console.log("[End]");
  9183.  
  9184.           console.groupEnd();
  9185.  
  9186.  
  9187.         }).catch(console.warn);
  9188.  
  9189.       }
  9190.  
  9191.  
  9192.       if (DELAY_FOCUSEDCHANGED) {
  9193.  
  9194.         customElements.whenDefined("yt-live-chat-text-input-field-renderer").then(() => {
  9195.  
  9196.  
  9197.           mightFirstCheckOnYtInit();
  9198.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-text-input-field-renderer hacks");
  9199.           console.log("[Begin]");
  9200.           (() => {
  9201.  
  9202.             const tag = "yt-live-chat-text-input-field-renderer"
  9203.             const dummy = document.createElement(tag);
  9204.  
  9205.             const cProto = getProto(dummy);
  9206.             if (!cProto || !cProto.attached) {
  9207.               console.warn(`proto.attached for ${tag} is unavailable.`);
  9208.               return;
  9209.             }
  9210.  
  9211.             if (DELAY_FOCUSEDCHANGED && typeof cProto.focusedChanged === 'function' && cProto.focusedChanged.length === 0 && !cProto.focusedChanged372) {
  9212.               cProto.focusedChanged372 = cProto.focusedChanged;
  9213.               cProto.focusedChanged = function () {
  9214.                 Promise.resolve().then(() => {
  9215.                   if (this.isAttached === true) this.focusedChanged372();
  9216.                 });
  9217.               }
  9218.             }
  9219.  
  9220.           })();
  9221.  
  9222.           console.log("[End]");
  9223.  
  9224.           console.groupEnd();
  9225.  
  9226.         });
  9227.  
  9228.       }
  9229.  
  9230.  
  9231.     }
  9232.  
  9233.  
  9234.  
  9235.  
  9236.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  9237.  
  9238.     const fixJsonParse = () => {
  9239.  
  9240.       let p1 = window.onerror;
  9241.  
  9242.       try {
  9243.         JSON.parse("{}");
  9244.       } catch (e) {
  9245.         console.warn(e);
  9246.       }
  9247.  
  9248.       let p2 = window.onerror;
  9249.  
  9250.       if (p1 !== p2) {
  9251.  
  9252.  
  9253.         console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | JS Engine Issue Found"}`,
  9254.           "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  9255.           "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  9256.         );
  9257.  
  9258.         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");
  9259.  
  9260.         console.groupEnd();
  9261.  
  9262.       }
  9263.  
  9264.     }
  9265.  
  9266.     if (CHECK_JSONPRUNE) {
  9267.       promiseForCustomYtElementsReady.then(fixJsonParse);
  9268.     }
  9269.  
  9270.   });
  9271.  
  9272.  
  9273.  
  9274. })({ IntersectionObserver });