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YouTube 超快聊天

YouTube直播聊天的终极性能提升

目前为 2023-09-08 提交的版本。查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.60.1
  4. // @license             MIT
  5. // @name:ja             YouTube スーパーファーストチャット
  6. // @name:zh-TW          YouTube 超快聊天
  7. // @name:zh-CN          YouTube 超快聊天
  8. // @icon                https://github.com/cyfung1031/userscript-supports/raw/main/icons/super-fast-chat.png
  9. // @namespace           UserScript
  10. // @match               https://www.youtube.com/live_chat*
  11. // @match               https://www.youtube.com/live_chat_replay*
  12. // @author              CY Fung
  13. // @run-at              document-start
  14. // @grant               none
  15. // @unwrap
  16. // @allFrames           true
  17. // @inject-into         page
  18. //
  19. // @compatible          firefox Violentmonkey
  20. // @compatible          firefox Tampermonkey
  21. // @compatible          firefox FireMonkey
  22. // @compatible          chrome Violentmonkey
  23. // @compatible          chrome Tampermonkey
  24. // @compatible          opera Violentmonkey
  25. // @compatible          opera Tampermonkey
  26. // @compatible          safari Stay
  27. // @compatible          edge Violentmonkey
  28. // @compatible          edge Tampermonkey
  29. // @compatible          brave Violentmonkey
  30. // @compatible          brave Tampermonkey
  31. //
  32. // @description         Ultimate Performance Boost for YouTube Live Chats
  33. // @description:ja      YouTubeのライブチャットの究極のパフォーマンスブースト
  34. // @description:zh-TW   YouTube直播聊天的終極性能提升
  35. // @description:zh-CN   YouTube直播聊天的终极性能提升
  36. //
  37. // ==/UserScript==
  38.  
  39. ((__CONTEXT__) => {
  40.   'use strict';
  41.  
  42.   const ENABLE_REDUCED_MAXITEMS_FOR_FLUSH = true;         // TRUE to enable trimming down to MAX_ITEMS_FOR_FULL_FLUSH (25) messages when there are too many unrendered messages
  43.   const MAX_ITEMS_FOR_TOTAL_DISPLAY = 90;                 // By default, 250 latest messages will be displayed, but displaying MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages is already sufficient.
  44.   const MAX_ITEMS_FOR_FULL_FLUSH = 25;                    // If there are too many new (stacked) messages not yet rendered, clean all and flush MAX_ITEMS_FOR_FULL_FLUSH (25) latest messages then incrementally added back to MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages
  45.  
  46.   const ENABLE_NO_SMOOTH_TRANSFORM = true;                // Depends on whether you want the animation effect for new chat messages
  47.   const USE_OPTIMIZED_ON_SCROLL_ITEMS = true;             // TRUE for the majority
  48.   const USE_WILL_CHANGE_CONTROLLER = false;               // FALSE for the majority
  49.   const ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED = true;  // In Chrome, the rendering of new chat messages could be too fast for no smooth transform. 80ms delay of displaying new messages should be sufficient for element rendering.
  50.   const ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  51.  
  52.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  53.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  54.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  55.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  56.  
  57.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  58.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  59.  
  60.   // Replace requestAnimationFrame timers with custom implementation
  61.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  62.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  63.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  64.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  65.  
  66.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  67.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  68.  
  69.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  70.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  71.  
  72.   // Data Manipulation for Participants (Participant List)
  73.   // << if DO_PARTICIPANT_LIST_HACKS >>
  74.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  75.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  76.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  77.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  78.   // << end >>
  79.  
  80.   // show more button
  81.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  82.  
  83.   // faster stampDomArray_ for participants list creation
  84.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  85.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  86.  
  87.   // reuse yt components
  88.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  89.  
  90.   // images <Group#I01>
  91.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  92.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  93.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  94.  
  95.   const DO_LINK_PREFETCH = true;                      // DO NOT CHANGE
  96.   // << if DO_LINK_PREFETCH >>
  97.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  98.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  99.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  100.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  101.   // << end >>
  102.  
  103.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  104.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  105.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  106.  
  107.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  108.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  109.  
  110.   const ATTEMPT_ANIMATED_TICKER_BACKGROUND = 'steps'   // false OR '' for disabled, 'linear', 'steps' for easing-function
  111.   // << if ATTEMPT_ANIMATED_TICKER_BACKGROUND >>
  112.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  113.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  114.   // [limiting 500 max steps] is recommended for "confortable visual change"
  115.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  116.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  117.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  118.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  119.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  120.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  121.   // << end >>
  122.  
  123.   const FIX_TOOLTIP_DISPLAY = true;
  124.   const USE_VANILLA_DEREF = true;
  125.   const FIX_DROPDOWN_DERAF = true;                        // DONT CHANGE
  126.  
  127.  
  128.   const CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true;        // cache the menu data and used for the next reopen
  129.   const ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU = true; // pause auto scroll faster when the context menu is about to show
  130.   const ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU = true;        // avoid multiple requests on the same time
  131.  
  132.   const BOOST_MENU_OPENCHANGED_RENDERING = true;
  133.   const FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK = true;  // click again = close
  134.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true; // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  135.   // const FIX_MENU_CAPTURE_SCROLL = true;
  136.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;        // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  137.  
  138.   const RAF_FIX_keepScrollClamped = true;
  139.   const RAF_FIX_scrollIncrementally = 2;            // 0: no action; 1: basic fix; 2: also fix scroll position
  140.  
  141.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  142.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  143.  
  144.   const CHECK_JSONPRUNE = true;                        // This is a bug in Brave
  145.   // << end >>
  146.  
  147.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  148.  
  149.   const CHANGE_DATA_FLUSH_ASYNC = false;
  150.   // CHANGE_DATA_FLUSH_ASYNC is disabled due to bug report: https://greasyfork.org/scripts/469878-youtube-super-fast-chat/discussions/199479
  151.   // to be further investigated
  152.  
  153.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  154.  
  155.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  156.   // 0 = default Yt animation background [= no fix]; 
  157.   // 1 = disable default animation background [= keep special animation]; 
  158.   // 2 = disable all animation backgrounds [= no animation backbround]
  159.  
  160.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  161.  
  162.   const MAX_TOOLTIP_NO_WRAP_WIDTH = '72vw'; // '' for disable; accept values like '60px', '25vw'
  163.  
  164.   const AMEND_TICKER_handleLiveChatAction = true; // to fix ticker duplication and unresponsively fast ticker generation
  165.  
  166.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  167.   /*
  168.  
  169.     ### Time Approach
  170.  
  171.     // all below values can make the time interval > 250ms
  172.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  173.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  174.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  175.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  176.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  177.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  178.  
  179.     ### Pixel Check
  180.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  181.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  182.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  183.  
  184.     ### Example - totalDuration = 280000
  185.     totalDuration 280000
  186.     stepInterval 0.5
  187.     numOfSteps = Math.round(100 / stepInterval) = 200
  188.     time interval = 280000 / 200 = 1400ms <acceptable>
  189.  
  190.     ### Example - totalDuration = 18000
  191.     totalDuration 18000
  192.     stepInterval 5
  193.     numOfSteps = Math.round(100 / stepInterval) = 20
  194.     time interval = 18000 / 20 = 900ms <acceptable>
  195.  
  196.     ### Example - totalDuration = 5000
  197.     totalDuration 5000
  198.     stepInterval 5
  199.     numOfSteps = Math.round(100 / stepInterval) = 20
  200.     time interval = 5000 / 20 = 250ms <threshold value>
  201.  
  202.     ### Example - totalDuration = 3600
  203.     totalDuration 3600
  204.     stepInterval 5
  205.     numOfSteps = Math.round(100 / stepInterval) = 20
  206.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  207.  
  208.   */
  209.  
  210.   // =======================================================================================================
  211.  
  212.   // AUTOMAICALLY DETERMINED
  213.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  214.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  215.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  216.   let runTickerClassName = 'run-ticker';
  217.  
  218.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  219.   /*
  220.     WebP: data:image/webp;base64,UklGRjAB
  221.     PNG: data:image/png;base64,iVBORw0KGg==
  222.     JPEG: data:image/jpeg;base64,/9j/4AA=
  223.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  224.     BMP: data:image/bmp;base64,Qk1oAAAA
  225.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  226.  
  227.     WebP: data:image/webp;base64,AAAAAAA=
  228.     PNG:  data:image/png;base64,AAAAAAA=
  229.     JPEG: data:image/jpeg;base64,AAAAAAA=
  230.     GIF:  data:image/gif;base64,AAAAAAA=
  231.     BMP:  data:image/bmp;base64,AAAAAAA=
  232.  
  233.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  234.  
  235.  
  236.   */
  237.  
  238.   // image sizing code
  239.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  240.  
  241.  
  242.   //   function KC(a, b, c, d) {
  243.   //     d = void 0 === d ? "width" : d;
  244.   //     if (!a || !a.length)
  245.   //         return null;
  246.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  247.   //         var e = window.devicePixelRatio;
  248.   //         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"));
  249.   //         HC = e
  250.   //     } else
  251.   //         HC || (HC = window.devicePixelRatio);
  252.   //     e = HC;
  253.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  254.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  255.   //         return a[0].url || null;
  256.   //     e = a.length;
  257.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  258.   //         return a[e - 1].url || null;
  259.   //     if (c)
  260.   //         for (var h = 0; h < e; h++)
  261.   //             if (0 <= a[h].url.indexOf(c))
  262.   //                 return a[h].url || null;
  263.   //     for (c = 0; c < e; c++)
  264.   //         if (a[c][d] >= b)
  265.   //             return a[c].url || null;
  266.   //     for (b = e - 1; 0 < b; b--)
  267.   //         if (a[b][d])
  268.   //             return a[b].url || null;
  269.   //     return a[0].url || null
  270.   // }
  271.  
  272.   const { IntersectionObserver } = __CONTEXT__;
  273.  
  274.   /** @type {globalThis.PromiseConstructor} */
  275.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  276.  
  277.   // let jsonParseFix = null;
  278.  
  279.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  280.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  281.  
  282.   // necessity of cssText3_smooth_transform_position to be checked.
  283.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  284.  
  285.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  286.         position: static !important;
  287.     }
  288.  
  289.   `: '';
  290.  
  291.   // fallback if dummy style fn fails
  292.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  293.  
  294.     /* optional */
  295.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  296.         height: auto !important;
  297.         min-height: unset !important;
  298.     }
  299.  
  300.     #items.style-scope.yt-live-chat-item-list-renderer {
  301.         transform: translateY(0px) !important;
  302.     }
  303.  
  304.     /* optional */
  305.  
  306.   `: '';
  307.  
  308.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  309.  
  310.     /* ------------------------------------------------------------------------------------------------------------- */
  311.  
  312.     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 {
  313.         contain: layout style;
  314.     }
  315.  
  316.     #items.style-scope.yt-live-chat-item-list-renderer {
  317.         contain: layout paint style;
  318.     }
  319.  
  320.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  321.         contain: style;
  322.     }
  323.  
  324.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  325.         contain: size style;
  326.     }
  327.  
  328.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  329.         contain: size layout paint style;
  330.     }
  331.  
  332.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  333.         contain: layout paint style;
  334.     }
  335.  
  336.     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 {
  337.         contain: layout style;
  338.     }
  339.  
  340.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  341.         contain: layout paint style;
  342.     }
  343.  
  344.     /* ------------------------------------------------------------------------------------------------------------- */
  345.  
  346.   ` : '';
  347.  
  348.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  349.  
  350.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  351.         top: 4px;
  352.         transition-property: top;
  353.         bottom: unset;
  354.     }
  355.  
  356.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  357.         top: -42px;
  358.     }
  359.  
  360.   `: '';
  361.  
  362.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  363.  
  364.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  365.         contain: layout style;
  366.     }
  367.  
  368.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  369.         overflow: visible;
  370.     }
  371.  
  372.   `: '';
  373.  
  374.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  375.  
  376.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  377.         --yt-live-chat-action-panel-top-border: none;
  378.     }
  379.  
  380.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  381.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  382.     }
  383.  
  384.     html #panel-pages.yt-live-chat-renderer {
  385.         border-top: 0;
  386.         border-bottom: 0;
  387.     }
  388.  
  389.   `: '';
  390.  
  391.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  392.  
  393.     img,
  394.     yt-img-shadow[height][width],
  395.     yt-img-shadow {
  396.         content-visibility: visible !important;
  397.     }
  398.  
  399.   `  : '';
  400.  
  401.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  402.  
  403.     /* remove YouTube constant will-change */
  404.     /* constant value will slow down the performance; default auto */
  405.  
  406.     /* www-player.css */
  407.     html .ytp-contextmenu,
  408.     html .ytp-settings-menu {
  409.         will-change: unset;
  410.     }
  411.  
  412.     /* frequently matched elements */
  413.     html .fill.yt-interaction,
  414.     html .stroke.yt-interaction,
  415.     html .yt-spec-touch-feedback-shape__fill,
  416.     html .yt-spec-touch-feedback-shape__stroke {
  417.         will-change: unset;
  418.     }
  419.  
  420.     /* live_chat_polymer.js */
  421.     /*
  422.     html .toggle-button.tp-yt-paper-toggle-button,
  423.     html #primaryProgress.tp-yt-paper-progress,
  424.     html #secondaryProgress.tp-yt-paper-progress,
  425.     html #onRadio.tp-yt-paper-radio-button,
  426.     html .fill.yt-interaction,
  427.     html .stroke.yt-interaction,
  428.     html .yt-spec-touch-feedback-shape__fill,
  429.     html .yt-spec-touch-feedback-shape__stroke {
  430.         will-change: unset;
  431.     }
  432.     */
  433.  
  434.     /* desktop_polymer_enable_wil_icons.js */
  435.     /* html .fill.yt-interaction,
  436.     html .stroke.yt-interaction, */
  437.     html tp-yt-app-header::before,
  438.     html tp-yt-iron-list,
  439.     html #items.tp-yt-iron-list > *,
  440.     html #onRadio.tp-yt-paper-radio-button,
  441.     html .toggle-button.tp-yt-paper-toggle-button,
  442.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  443.     html #items.ytd-post-multi-image-renderer,
  444.     html #items.ytd-horizontal-card-list-renderer,
  445.     html #items.yt-horizontal-list-renderer,
  446.     html #left-arrow.yt-horizontal-list-renderer,
  447.     html #right-arrow.yt-horizontal-list-renderer,
  448.     html #items.ytd-video-description-infocards-section-renderer,
  449.     html #items.ytd-video-description-music-section-renderer,
  450.     html #chips.ytd-feed-filter-chip-bar-renderer,
  451.     html #chips.yt-chip-cloud-renderer,
  452.     html #items.ytd-merch-shelf-renderer,
  453.     html #items.ytd-product-details-image-carousel-renderer,
  454.     html ytd-video-preview,
  455.     html #player-container.ytd-video-preview,
  456.     html #primaryProgress.tp-yt-paper-progress,
  457.     html #secondaryProgress.tp-yt-paper-progress,
  458.     html ytd-miniplayer[enabled] /* ,
  459.     html .yt-spec-touch-feedback-shape__fill,
  460.     html .yt-spec-touch-feedback-shape__stroke */ {
  461.         will-change: unset;
  462.     }
  463.  
  464.     /* other */
  465.     .ytp-videowall-still-info-content[class],
  466.     .ytp-suggestion-image[class] {
  467.         will-change: unset !important;
  468.     }
  469.  
  470.   ` : '';
  471.  
  472.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  473.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  474.  
  475.     elzm-fonts {
  476.         visibility: collapse;
  477.         position: fixed;
  478.         top: -10px;
  479.         left: -10px;
  480.         font-size: 10pt;
  481.         line-height: 100%;
  482.         width: 100px;
  483.         height: 100px;
  484.         transform: scale(0.1);
  485.         transform: scale(0.01);
  486.         transform: scale(0.001);
  487.         transform-origin: 0 0;
  488.         contain: strict;
  489.         display: block;
  490.  
  491.         pointer-events: none !important;
  492.         user-select: none !important;
  493.     }
  494.  
  495.     elzm-fonts[id]#elzm-fonts-yk75g {
  496.         user-select: none !important;
  497.         pointer-events: none !important;
  498.     }
  499.  
  500.     elzm-font {
  501.         visibility: collapse;
  502.         position: absolute;
  503.         line-height: 100%;
  504.         width: 100px;
  505.         height: 100px;
  506.         contain: strict;
  507.         display: block;
  508.  
  509.         user-select: none !important;
  510.         pointer-events: none !important;
  511.     }
  512.  
  513.     elzm-font::before {
  514.         visibility: collapse;
  515.         position: absolute;
  516.         line-height: 100%;
  517.         width: 100px;
  518.         height: 100px;
  519.         contain: strict;
  520.         display: block;
  521.  
  522.         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';
  523.  
  524.         user-select: none !important;
  525.         pointer-events: none !important;
  526.     }
  527.  
  528.   `: '';
  529.  
  530.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  531.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  532.         -webkit-backdrop-filter: none;
  533.         backdrop-filter: none;
  534.     }
  535.   `: '';
  536.  
  537.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  538.  
  539.     @keyframes blinker-miuzp {
  540.         0%, 60%, 100% {
  541.             opacity: 1;
  542.         }
  543.         30% {
  544.             opacity: 0.6;
  545.         }
  546.     }
  547.  
  548.     yt-icon-button#show-more.has-new-messages-miuzp {
  549.         animation: blinker-miuzp 1.74s linear infinite;
  550.     }
  551.  
  552.   `: '';
  553.  
  554.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  555.  
  556.     yt-live-chat-paid-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  557.       pointer-events: none !important;
  558.     }
  559.  
  560.     yt-live-chat-membership-item-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  561.       pointer-events: none !important;
  562.     }
  563.  
  564.     yt-live-chat-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  565.       pointer-events: none !important;
  566.     }
  567.  
  568.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  569.       pointer-events: none !important;
  570.     }
  571.  
  572.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  573.       pointer-events: none !important;
  574.     }
  575.  
  576.   `: '';
  577.  
  578.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  579.  
  580.  
  581.     tp-yt-paper-tooltip[role="tooltip"] {
  582.       box-sizing: content-box !important;
  583.       margin: 0px !important;
  584.       padding: 0px !important;
  585.       contain: none !important;
  586.     }
  587.  
  588.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  589.       box-sizing: content-box !important;
  590.       display: inline-block;
  591.       contain: none !important;
  592.     }
  593.  
  594.  
  595.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  596.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  597.       width: max-content;
  598.       text-overflow: ellipsis;
  599.       overflow: hidden;
  600.       white-space: nowrap;
  601.     }
  602.  
  603.  
  604.   `: '';
  605.  
  606.  
  607.   const cssText13_no_text_select_when_menu_visible = `
  608.     [menu-visible] {
  609.       --sfc47-text-select: none;
  610.     }
  611.     [menu-visible] #header[id][class],
  612.     [menu-visible] #content[id][class],
  613.     [menu-visible] #header[id][class] *,
  614.     [menu-visible] #content[id][class] * {
  615.       user-select: var(--sfc47-text-select) !important;
  616.     }
  617.     [menu-visible] #menu {
  618.       --sfc47-text-select: inherit;
  619.     }
  620.   `
  621.  
  622.  
  623.   const addCss = () => `
  624.  
  625.     @property --ticker-rtime {
  626.       syntax: "<percentage>";
  627.       inherits: false;
  628.       initial-value: 0%;
  629.     }
  630.  
  631.     /*
  632.     .run-ticker {
  633.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  634.     }
  635.  
  636.     .run-ticker-test {
  637.       background: #00000001;
  638.     }
  639.  
  640.     .run-ticker-forced,
  641.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  642.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  643.     {
  644.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  645.     }
  646.     */
  647.  
  648.     .run-ticker {
  649.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  650.     }
  651.  
  652.     .run-ticker,
  653.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  654.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  655.     {
  656.       background: var(--ticker-bg) !important;
  657.     }
  658.  
  659.     yt-live-chat-ticker-dummy777-item-renderer {
  660.       background: #00000001;
  661.     }
  662.  
  663.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  664.       position: fixed !important;
  665.       top: -1000px !important;
  666.       left: -1000px !important;
  667.       font-size: 1px !important;
  668.       color: transparent !important;
  669.       pointer-events: none !important;
  670.       z-index: -1 !important;
  671.       contain: strict !important;
  672.       box-sizing: border-box !important;
  673.       pointer-events: none !important;
  674.       user-select: none !important;
  675.       max-width: 1px !important;
  676.       max-height: 1px !important;
  677.       overflow: hidden !important;
  678.       visibility: collapse !important;
  679.       display: none !important;
  680.     }
  681.  
  682.     yt-live-chat-ticker-dummy777-item-renderer #container {
  683.       background: inherit;
  684.     }
  685.  
  686.  
  687.     ${cssText8_fonts_pre_render}
  688.  
  689.     ${cssText9_no_backdrop_filter_when_menu_shown}
  690.  
  691.     @supports (contain: layout paint style) {
  692.  
  693.       ${cssText5}
  694.  
  695.     }
  696.  
  697.     @supports (color: var(--general)) {
  698.  
  699.       html {
  700.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  701.       }
  702.  
  703.       ${cssText3_smooth_transform_position}
  704.  
  705.       ${cssText7c_will_change_unset}
  706.  
  707.       ${cssText7b_content_visibility_unset}
  708.  
  709.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  710.           overflow-y: scroll;
  711.           padding-right: 0;
  712.       }
  713.  
  714.       ${cssText4_smooth_transform_forced_props}
  715.  
  716.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  717.           pointer-events: none !important;
  718.       }
  719.  
  720.       #continuations, #continuations * {
  721.           contain: strict;
  722.           position: fixed;
  723.           top: 2px;
  724.           height: 1px;
  725.           width: 2px;
  726.           height: 1px;
  727.           visibility: collapse;
  728.       }
  729.  
  730.       ${cssText6b_show_more_button}
  731.  
  732.       ${cssText6d_input_panel_border}
  733.  
  734.       ${cssText6c_input_panel_overflow}
  735.  
  736.     }
  737.  
  738.  
  739.     @supports (overflow-anchor: auto) {
  740.  
  741.       .no-anchor * {
  742.           overflow-anchor: none;
  743.       }
  744.       .no-anchor > item-anchor {
  745.           overflow-anchor: auto;
  746.       }
  747.  
  748.       item-anchor {
  749.  
  750.           height:1px;
  751.           width: 100%;
  752.           transform: scaleY(0.00001);
  753.           transform-origin:0 0;
  754.           contain: strict;
  755.           opacity:0;
  756.           display:flex;
  757.           position:relative;
  758.           flex-shrink:0;
  759.           flex-grow:0;
  760.           margin-bottom:0;
  761.           overflow:hidden;
  762.           box-sizing:border-box;
  763.           visibility: visible;
  764.           content-visibility: visible;
  765.           contain-intrinsic-size: auto 1px;
  766.           pointer-events:none !important;
  767.  
  768.       }
  769.  
  770.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  771.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  772.       }
  773.  
  774.       html item-anchor {
  775.  
  776.           height: 1px;
  777.           width: 1px;
  778.           top: auto;
  779.           left: auto;
  780.           right: auto;
  781.           bottom: auto;
  782.           transform: translateY(-1px);
  783.           position: absolute;
  784.           z-index: -1;
  785.  
  786.       }
  787.  
  788.     }
  789.  
  790.     @supports (color: var(--pre-rendering)) {
  791.  
  792.       @keyframes dontRenderAnimation {
  793.           0% {
  794.               background-position-x: 3px;
  795.           }
  796.           100% {
  797.               background-position-x: 4px;
  798.           }
  799.       }
  800.  
  801.       .dont-render[class] {
  802.           /* visibility: collapse !important; */
  803.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  804.  
  805.           transform: scale(0.01) !important;
  806.           transform: scale(0.00001) !important;
  807.           transform: scale(0.0000001) !important;
  808.           transform-origin: 0 0 !important;
  809.           z-index: -1 !important;
  810.           contain: strict !important;
  811.           box-sizing: border-box !important;
  812.  
  813.           height: 1px !important;
  814.           height: 0.1px !important;
  815.           height: 0.01px !important;
  816.           height: 0.0001px !important;
  817.           height: 0.000001px !important;
  818.  
  819.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  820.  
  821.           pointer-events: none !important;
  822.           user-select: none !important;
  823.  
  824.       }
  825.  
  826.       #sk35z {
  827.         display: block !important;
  828.  
  829.         visibility: collapse !important;
  830.  
  831.         transform: scale(0.01) !important;
  832.         transform: scale(0.00001) !important;
  833.         transform: scale(0.0000001) !important;
  834.         transform-origin: 0 0 !important;
  835.         z-index: -1 !important;
  836.         contain: strict !important;
  837.         box-sizing: border-box !important;
  838.  
  839.         height: 1px !important;
  840.         height: 0.1px !important;
  841.         height: 0.01px !important;
  842.         height: 0.0001px !important;
  843.         height: 0.000001px !important;
  844.  
  845.         position: absolute !important;
  846.         top: -1000px !important;
  847.         left: -1000px !important;
  848.  
  849.       }
  850.  
  851.     }
  852.  
  853.     [rNgzQ] {
  854.       opacity: 0 !important;
  855.       pointer-events: none !important;
  856.     }
  857.  
  858.  
  859.     ${cssText10_show_more_blinker}
  860.  
  861.     ${cssText11_entire_message_clickable}
  862.  
  863.     ${cssText12_nowrap_tooltip}
  864.  
  865.     ${cssText13_no_text_select_when_menu_visible}
  866.  
  867.   `;
  868.  
  869.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  870.  
  871.   // Create a unique key for the script and check if it is already running
  872.   const hkey_script = 'mchbwnoasqph';
  873.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  874.   win[hkey_script] = true;
  875.  
  876.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  877.  
  878.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  879.     if (te4 < 3) {
  880.       setTimeout(() => { });
  881.       setTimeout(() => { });
  882.     }
  883.  
  884.   }
  885.  
  886.   const firstKey = (obj) => {
  887.     for (const key in obj) {
  888.       if (obj.hasOwnProperty(key)) return key;
  889.     }
  890.     return null;
  891.   }
  892.  
  893.   function deepCopy(obj, skipKeys) {
  894.     skipKeys = skipKeys || [];
  895.     if (!obj || typeof obj !== 'object') return obj;
  896.     if (Array.isArray(obj)) {
  897.       return obj.map(item => deepCopy(item, skipKeys));
  898.     }
  899.     const copy = {};
  900.     for (let key in obj) {
  901.       if (!skipKeys.includes(key)) {
  902.         copy[key] = deepCopy(obj[key], skipKeys);
  903.       }
  904.     }
  905.     return copy;
  906.   }
  907.  
  908.   class Mutex {
  909.  
  910.     constructor() {
  911.       this.p = Promise.resolve()
  912.     }
  913.  
  914.     /**
  915.      *  @param {(lockResolve: () => void)} f
  916.      */
  917.     lockWith(f) {
  918.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  919.     }
  920.  
  921.   }
  922.  
  923.   const PromiseExternal = ((resolve_, reject_) => {
  924.     const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  925.     return class PromiseExternal extends Promise {
  926.       constructor(cb = h) {
  927.         super(cb);
  928.         if (cb === h) {
  929.           /** @type {(value: any) => void} */
  930.           this.resolve = resolve_;
  931.           /** @type {(reason?: any) => void} */
  932.           this.reject = reject_;
  933.         }
  934.       }
  935.     };
  936.   })();
  937.  
  938.   /** @type {typeof PromiseExternal.prototype | null} */
  939.   let relayPromise = null;
  940.  
  941.  
  942.   /** @type {typeof PromiseExternal.prototype | null} */
  943.   let onPlayStateChangePromise = null;
  944.  
  945.  
  946.  
  947.   let playEventsStack = Promise.resolve();
  948.  
  949.   function dr(s) {
  950.     // reserved for future use
  951.     return s;
  952.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  953.   }
  954.  
  955.   const getProto = (element) => {
  956.     if (element) {
  957.       const cnt = element.inst || element;
  958.       return cnt.constructor.prototype || null;
  959.     }
  960.     return null;
  961.   }
  962.  
  963.   const assertor = (f) => f() || console.assert(false, f + "");
  964.  
  965.   const fnIntegrity = (f, d) => {
  966.     if (!f || typeof f !== 'function') {
  967.       console.warn('f is not a function', f);
  968.       return;
  969.     }
  970.     let p = f + "", s = 0, j = -1, w = 0;
  971.     for (let i = 0, l = p.length; i < l; i++) {
  972.       const t = p[i];
  973.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  974.         if (j < i - 1) w++;
  975.         j = i;
  976.       } else {
  977.         s++;
  978.       }
  979.     }
  980.     let itz = `${f.length}.${s}.${w}`;
  981.     if (!d) {
  982.       return itz;
  983.     } else {
  984.       return itz === d;
  985.     }
  986.   }
  987.  
  988.  
  989.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  990.  
  991.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  992.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  993.   if (!isContainSupport) {
  994.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  995.   } else {
  996.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  997.   }
  998.  
  999.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  1000.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  1001.   if (!isOverflowAnchorSupport) {
  1002.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  1003.   } else {
  1004.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  1005.   }
  1006.  
  1007.   const NOT_FIREFOX = !CSS.supports('-moz-appearance', 'none'); // 1. Firefox does not have the flicking issue; 2. Firefox's OVERFLOW_ANCHOR is less effective than Chromium's.
  1008.  
  1009.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  1010.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  1011.  
  1012.   let hasTimerModified = null;
  1013.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  1014.  
  1015.   const fxOperator = (proto, propertyName) => {
  1016.     let propertyDescriptorGetter = null;
  1017.     try {
  1018.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  1019.     } catch (e) { }
  1020.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  1021.       try {
  1022.  
  1023.         return propertyDescriptorGetter.call(dr(e));
  1024.       } catch (e) { }
  1025.       return e[propertyName];
  1026.     } : (e) => e[propertyName];
  1027.   };
  1028.  
  1029.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  1030.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  1031.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  1032.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  1033.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  1034.  
  1035.   const groupCollapsed = (text1, text2) => {
  1036.  
  1037.     console.groupCollapsed(`%c${text1}%c${text2}`,
  1038.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1039.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1040.     );
  1041.   }
  1042.  
  1043.  
  1044.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  1045.   const onRegistryReady = (callback) => {
  1046.     if (typeof customElements === 'undefined') {
  1047.       if (!('__CE_registry' in document)) {
  1048.         // https://github.com/webcomponents/polyfills/
  1049.         Object.defineProperty(document, '__CE_registry', {
  1050.           get() {
  1051.             // return undefined
  1052.           },
  1053.           set(nv) {
  1054.             if (typeof nv == 'object') {
  1055.               delete this.__CE_registry;
  1056.               this.__CE_registry = nv;
  1057.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  1058.             }
  1059.             return true;
  1060.           },
  1061.           enumerable: false,
  1062.           configurable: true
  1063.         })
  1064.       }
  1065.       let eventHandler = (evt) => {
  1066.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1067.         const f = callback;
  1068.         callback = null;
  1069.         eventHandler = null;
  1070.         f();
  1071.       };
  1072.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1073.     } else {
  1074.       callback();
  1075.     }
  1076.   };
  1077.  
  1078.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1079.  
  1080.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1081.  
  1082.     return new Promise(resolve => {
  1083.  
  1084.       let ro = new ResizeObserver(entries => {
  1085.         if (entries && entries.length >= 1) {
  1086.           resolve();
  1087.           ro.disconnect();
  1088.           ro = null;
  1089.         }
  1090.       });
  1091.       ro.observe(sizingTarget);
  1092.  
  1093.  
  1094.  
  1095.     });
  1096.  
  1097.   } : (sizingTarget) => {
  1098.  
  1099.  
  1100.     return new Promise(resolve => {
  1101.  
  1102.       let io = new IntersectionObserver(entries => {
  1103.         if (entries && entries.length >= 1) {
  1104.           resolve();
  1105.           io.disconnect();
  1106.           io = null;
  1107.         }
  1108.       });
  1109.       io.observe(sizingTarget);
  1110.  
  1111.  
  1112.  
  1113.     });
  1114.  
  1115.   };
  1116.  
  1117.   /* globals WeakRef:false */
  1118.  
  1119.   /** @type {(o: Object | null) => WeakRef | null} */
  1120.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1121.  
  1122.   /** @type {(wr: Object | null) => Object | null} */
  1123.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1124.  
  1125.   const { addCssManaged } = (() => {
  1126.  
  1127.     const addFontPreRendering = () => {
  1128.  
  1129.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1130.  
  1131.       let efsContainer = document.createElement('elzm-fonts');
  1132.       efsContainer.id = 'elzm-fonts-yk75g'
  1133.  
  1134.       const arr = [];
  1135.       let p = document.createElement('elzm-font');
  1136.       arr.push(p);
  1137.  
  1138.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1139.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1140.  
  1141.           p = document.createElement('elzm-font');
  1142.           p.style.fontWeight = size;
  1143.           arr.push(p);
  1144.         }
  1145.       }
  1146.  
  1147.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1148.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1149.  
  1150.           p = document.createElement('elzm-font');
  1151.           p.style.fontFamily = 'Roboto';
  1152.           p.style.fontWeight = size;
  1153.           arr.push(p);
  1154.         }
  1155.       }
  1156.  
  1157.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1158.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1159.  
  1160.           p = document.createElement('elzm-font');
  1161.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1162.           p.style.fontWeight = size;
  1163.           arr.push(p);
  1164.         }
  1165.       }
  1166.  
  1167.  
  1168.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1169.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1170.  
  1171.           p = document.createElement('elzm-font');
  1172.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1173.           p.style.fontWeight = size;
  1174.           arr.push(p);
  1175.         }
  1176.       }
  1177.  
  1178.  
  1179.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1180.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1181.  
  1182.           p = document.createElement('elzm-font');
  1183.           p.style.fontFamily = 'sans-serif';
  1184.           p.style.fontWeight = size;
  1185.           arr.push(p);
  1186.         }
  1187.       }
  1188.  
  1189.       console.log('number of elzm-font elements', arr.length);
  1190.  
  1191.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1192.  
  1193.       (document.body || document.documentElement).appendChild(efsContainer);
  1194.  
  1195.  
  1196.       console.log('elzm-font elements have been added to the page for rendering.');
  1197.  
  1198.       console.groupEnd();
  1199.  
  1200.     }
  1201.  
  1202.     let isCssAdded = false;
  1203.  
  1204.     function addCssElement() {
  1205.       let s = document.createElement('style');
  1206.       s.id = 'ewRvC';
  1207.       return s;
  1208.     }
  1209.  
  1210.     const addCssManaged = () => {
  1211.       if (!isCssAdded && document.documentElement && document.head) {
  1212.         isCssAdded = true;
  1213.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1214.         if (ENABLE_FONT_PRE_RENDERING) {
  1215.           Promise.resolve().then(addFontPreRendering)
  1216.         }
  1217.       }
  1218.     }
  1219.  
  1220.     return { addCssManaged };
  1221.   })();
  1222.  
  1223.  
  1224.   const { setupStyle } = (() => {
  1225.  
  1226.     const sp7 = Symbol();
  1227.  
  1228.     const proxyHelperFn = (dummy) => ({
  1229.  
  1230.       get(target, prop) {
  1231.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1232.       },
  1233.       set(target, prop, value) {
  1234.         if (!(prop in dummy)) {
  1235.           target[prop] = value;
  1236.         }
  1237.         return true;
  1238.       },
  1239.       has(target, prop) {
  1240.         return (prop in target);
  1241.       },
  1242.       deleteProperty(target, prop) {
  1243.         return true;
  1244.       },
  1245.       ownKeys(target) {
  1246.         return Object.keys(target);
  1247.       },
  1248.       defineProperty(target, key, descriptor) {
  1249.         return Object.defineProperty(target, key, descriptor);
  1250.       },
  1251.       getOwnPropertyDescriptor(target, key) {
  1252.         return Object.getOwnPropertyDescriptor(target, key);
  1253.       },
  1254.  
  1255.     });
  1256.  
  1257.     const setupStyle = (m1, m2) => {
  1258.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1259.  
  1260.       const dummy1v = {
  1261.         transform: '',
  1262.         height: '',
  1263.         minHeight: '',
  1264.         paddingBottom: '',
  1265.         paddingTop: ''
  1266.       };
  1267.  
  1268.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1269.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1270.         dummy1v[k] = dummyStyleFn(k);
  1271.       }
  1272.  
  1273.       const dummy1p = proxyHelperFn(dummy1v);
  1274.       const sp1v = new Proxy(m1.style, dummy1p);
  1275.       const sp2v = new Proxy(m2.style, dummy1p);
  1276.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1277.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1278.       m1.removeAttribute("style");
  1279.       m2.removeAttribute("style");
  1280.  
  1281.     }
  1282.  
  1283.     return { setupStyle };
  1284.  
  1285.   })();
  1286.  
  1287.  
  1288.  
  1289.   function setThumbnails(config) {
  1290.  
  1291.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1292.  
  1293.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1294.  
  1295.  
  1296.       if (thumbnails && thumbnails.length > 0) {
  1297.         if (flag0 > 0 && thumbnails.length > 1) {
  1298.           let pSize = 0;
  1299.           let newThumbnails = [];
  1300.           for (const thumbnail of thumbnails) {
  1301.             if (!thumbnail || !thumbnail.url) continue;
  1302.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1303.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1304.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1305.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1306.               newThumbnails.push(thumbnail);
  1307.               if (imageLinks) imageLinks.add(thumbnail.url);
  1308.             }
  1309.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1310.               pSize = thumbnail.width;
  1311.             }
  1312.           }
  1313.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1314.             baseObject.thumbnails = newThumbnails;
  1315.           } else {
  1316.             newThumbnails.length = 0;
  1317.           }
  1318.           newThumbnails = null;
  1319.         } else {
  1320.           for (const thumbnail of thumbnails) {
  1321.             if (thumbnail && thumbnail.url) {
  1322.               if (imageLinks) imageLinks.add(thumbnail.url);
  1323.             }
  1324.           }
  1325.         }
  1326.       }
  1327.  
  1328.     }
  1329.   }
  1330.  
  1331.   function fixLiveChatItem(item, imageLinks) {
  1332.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1333.     if (liveChatTextMessageRenderer) {
  1334.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1335.       if (messageRuns && messageRuns.length > 0) {
  1336.         for (const run of messageRuns) {
  1337.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1338.           setThumbnails({
  1339.             baseObject: emojiImage,
  1340.             thumbnails: emojiImage.thumbnails,
  1341.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1342.             imageLinks
  1343.           });
  1344.         }
  1345.       }
  1346.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1347.       setThumbnails({
  1348.         baseObject: authorPhoto,
  1349.         thumbnails: authorPhoto.thumbnails,
  1350.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1351.         imageLinks
  1352.       });
  1353.     }
  1354.   }
  1355.  
  1356.  
  1357.   const flagsFnOnInterval = (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) ? (() => {
  1358.  
  1359.     const flags = () => {
  1360.       try {
  1361.         return ytcfg.data_.EXPERIMENT_FLAGS;
  1362.       } catch (e) { }
  1363.       return null;
  1364.     };
  1365.  
  1366.     const flagsForced = () => {
  1367.       try {
  1368.         return ytcfg.data_.EXPERIMENTS_FORCED_FLAGS;
  1369.       } catch (e) { }
  1370.       return null;
  1371.     };
  1372.  
  1373.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1374.  
  1375.       if (!EXPERIMENT_FLAGS) return;
  1376.  
  1377.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1378.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1379.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1380.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1381.         }
  1382.       }
  1383.  
  1384.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1385.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1386.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1387.       }
  1388.  
  1389.     };
  1390.  
  1391.     const uf = (EXPERIMENT_FLAGS) => {
  1392.       if (EXPERIMENT_FLAGS === undefined) EXPERIMENT_FLAGS = flags();
  1393.       if (EXPERIMENT_FLAGS) {
  1394.         flagsFn(EXPERIMENT_FLAGS);
  1395.         flagsFn(flagsForced());
  1396.       }
  1397.     }
  1398.  
  1399.     uf();
  1400.  
  1401.     const flagsFnOnInterval = (setInterval, clearInterval) => {
  1402.  
  1403.       uf();
  1404.       let cidFlags = 0;
  1405.       let kd = 0;
  1406.       new Promise(flagResolve => {
  1407.  
  1408.         const flagTimer = () => {
  1409.           const EXPERIMENT_FLAGS = flags();
  1410.           if (!EXPERIMENT_FLAGS) return;
  1411.           uf(EXPERIMENT_FLAGS);
  1412.           if (kd > 0) return;
  1413.           kd = 1;
  1414.           const delay1000 = new Promise(resolve => setTimeout(resolve, 1000));
  1415.           const moDeferred = new Promise(resolve => {
  1416.             let mo = new MutationObserver(() => {
  1417.               if (mo) {
  1418.                 mo.disconnect();
  1419.                 mo.takeRecords();
  1420.                 mo = null;
  1421.                 resolve();
  1422.               }
  1423.             });
  1424.             mo.observe(document, { subtree: true, childList: true });
  1425.           });
  1426.           Promise.race([delay1000, moDeferred]).then(flagResolve);
  1427.         };
  1428.  
  1429.         uf();
  1430.         cidFlags = setInterval(flagTimer, 1);
  1431.       }).then(() => {
  1432.         if (cidFlags > 0) clearInterval(cidFlags);
  1433.         cidFlags = 0;
  1434.         uf();
  1435.       });
  1436.  
  1437.     }
  1438.  
  1439.     return flagsFnOnInterval;
  1440.  
  1441.   })() : null;
  1442.  
  1443.   let kptPF = null;
  1444.   const emojiPrefetched = new Set();
  1445.   const authorPhotoPrefetched = new Set();
  1446.  
  1447.   function linker(link, rel, href, _as) {
  1448.     return new Promise(resolve => {
  1449.       if (!link) link = document.createElement('link');
  1450.       link.rel = rel;
  1451.       if (_as) link.setAttribute('as', _as);
  1452.       link.onload = function () {
  1453.         resolve({
  1454.           link: this,
  1455.           success: true
  1456.         })
  1457.         this.remove();
  1458.       };
  1459.       link.onerror = function () {
  1460.         resolve({
  1461.           link: this,
  1462.           success: false
  1463.         });
  1464.         this.remove();
  1465.       };
  1466.       link.href = href;
  1467.       document.head.appendChild(link);
  1468.       link = null;
  1469.     });
  1470.   }
  1471.  
  1472.  
  1473.  
  1474.   const cleanContext = async (win) => {
  1475.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1476.     try {
  1477.       let mx = 16; // MAX TRIAL
  1478.       const frameId = 'vanillajs-iframe-v1';
  1479.       /** @type {HTMLIFrameElement | null} */
  1480.       let frame = document.getElementById(frameId);
  1481.       let removeIframeFn = null;
  1482.       if (!frame) {
  1483.         frame = document.createElement('iframe');
  1484.         frame.id = 'vanillajs-iframe-v1';
  1485.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1486.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1487.         n.appendChild(frame);
  1488.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1489.         const root = document.documentElement;
  1490.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1491.         removeIframeFn = (setTimeout) => {
  1492.           const removeIframeOnDocumentReady = (e) => {
  1493.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1494.             win = null;
  1495.             setTimeout(() => {
  1496.               n.remove();
  1497.               n = null;
  1498.             }, 200);
  1499.           }
  1500.           if (document.readyState !== 'loading') {
  1501.             removeIframeOnDocumentReady();
  1502.           } else {
  1503.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1504.           }
  1505.         }
  1506.       }
  1507.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1508.       const fc = frame.contentWindow;
  1509.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1510.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1511.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1512.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1513.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1514.  
  1515.       /** @type {HTMLElement} */
  1516.       const HTMLElementProto = fc.HTMLElement.prototype;
  1517.       /** @type {EventTarget} */
  1518.       const EventTargetProto = fc.EventTarget.prototype;
  1519.       // jsonParseFix = {
  1520.       //   _JSON: fc.JSON, _parse: fc.JSON.parse
  1521.       // }
  1522.       return {
  1523.         ...res,
  1524.         animate: HTMLElementProto.animate,
  1525.         addEventListener: EventTargetProto.addEventListener,
  1526.         removeEventListener: EventTargetProto.removeEventListener
  1527.       };
  1528.     } catch (e) {
  1529.       console.warn(e);
  1530.       return null;
  1531.     }
  1532.   };
  1533.  
  1534.   cleanContext(win).then(__CONTEXT__ => {
  1535.     if (!__CONTEXT__) return null;
  1536.  
  1537.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1538.  
  1539.  
  1540.     let foregroundPromise = null;
  1541.     const foregroundPromiseFn = () => (foregroundPromise = (foregroundPromise || new Promise(resolve => {
  1542.       requestAnimationFrame(() => {
  1543.         foregroundPromise = null;
  1544.         resolve();
  1545.       });
  1546.     })));
  1547.  
  1548.     let playerState = null;
  1549.     let _playerState = null;
  1550.     let lastPlayerProgress = null;
  1551.     let relayCount = 0;
  1552.     let playerEventsByIframeRelay = false;
  1553.     let isPlayProgressTriggered = false;
  1554.     let waitForInitialDataCompletion = 0;
  1555.  
  1556.  
  1557.  
  1558.     let aeConstructor = null;
  1559.  
  1560.     // << __openedChanged82 >>
  1561.     let currentMenuPivotWR = null;
  1562.  
  1563.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1564.     const beforeParticipantsMap = new WeakMap();
  1565.     // << end >>
  1566.  
  1567.  
  1568.  
  1569.     // << if onRegistryReadyForDOMOperations >>
  1570.  
  1571.     let dt0 = Date.now() - 2000;
  1572.     const dateNow = () => Date.now() - dt0;
  1573.     // let lastScroll = 0;
  1574.     // let lastLShow = 0;
  1575.     let lastWheel = 0;
  1576.     let lastMouseDown = 0;
  1577.     let lastMouseUp = 0;
  1578.     let currentMouseDown = false;
  1579.     let lastTouchDown = 0;
  1580.     let lastTouchUp = 0;
  1581.     let currentTouchDown = false;
  1582.     let lastUserInteraction = 0;
  1583.  
  1584.     let scrollChatFn = null;
  1585.  
  1586.     let skipDontRender = true; // true first; false by flushActiveItems_
  1587.     let allowDontRender = null;
  1588.  
  1589.     // ---- #items mutation ----
  1590.     let sk35zResolveFn = null;
  1591.     let firstList = true;
  1592.  
  1593.     // << end >>
  1594.  
  1595.     class RAFHub {
  1596.       constructor() {
  1597.         /** @type {number} */
  1598.         this.startAt = 8170;
  1599.         /** @type {number} */
  1600.         this.counter = 0;
  1601.         /** @type {number} */
  1602.         this.rid = 0;
  1603.         /** @type {Map<number, FrameRequestCallback>} */
  1604.         this.funcs = new Map();
  1605.         const funcs = this.funcs;
  1606.         /** @type {FrameRequestCallback} */
  1607.         this.bCallback = this.mCallback.bind(this);
  1608.         this.pClear = () => funcs.clear();
  1609.         this.keepRAF = false;
  1610.       }
  1611.       /** @param {DOMHighResTimeStamp} highResTime */
  1612.       mCallback(highResTime) {
  1613.         this.rid = 0;
  1614.         Promise.resolve().then(this.pClear);
  1615.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1616.       }
  1617.       /** @param {FrameRequestCallback} f */
  1618.       request(f) {
  1619.         if (this.counter > 1e9) this.counter = 9;
  1620.         let cid = this.startAt + (++this.counter);
  1621.         this.funcs.set(cid, f);
  1622.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1623.         return cid;
  1624.       }
  1625.       /** @param {number} cid */
  1626.       cancel(cid) {
  1627.         cid = +cid;
  1628.         if (cid > 0) {
  1629.           if (cid <= this.startAt) {
  1630.             return cancelAnimationFrame(cid);
  1631.           }
  1632.           if (this.rid > 0) {
  1633.             this.funcs.delete(cid);
  1634.             if (this.funcs.size === 0 && !this.keepRAF) {
  1635.               cancelAnimationFrame(this.rid);
  1636.               this.rid = 0;
  1637.             }
  1638.           }
  1639.         }
  1640.       }
  1641.     }
  1642.  
  1643.     function basePrefetching() {
  1644.  
  1645.       new Promise(resolve => {
  1646.  
  1647.         if (document.readyState !== 'loading') {
  1648.           resolve();
  1649.         } else {
  1650.           win.addEventListener("DOMContentLoaded", resolve, false);
  1651.         }
  1652.  
  1653.       }).then(() => {
  1654.         const hostL1 = [
  1655.           'https://www.youtube.com', 'https://googlevideo.com',
  1656.           'https://googleapis.com', 'https://accounts.youtube.com',
  1657.           'https://www.gstatic.com', 'https://ggpht.com',
  1658.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1659.         ];
  1660.  
  1661.         const hostL2 = [
  1662.           'https://youtube.com',
  1663.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1664.         ];
  1665.  
  1666.         let link = null;
  1667.  
  1668.         function kn() {
  1669.  
  1670.           link = document.createElement('link');
  1671.           if (link.relList && link.relList.supports) {
  1672.             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)
  1673.           } else {
  1674.             kptPF = 0;
  1675.           }
  1676.  
  1677.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1678.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1679.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1680.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1681.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1682.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1683.           console.groupEnd();
  1684.  
  1685.         }
  1686.  
  1687.         for (const h of hostL1) {
  1688.  
  1689.           if (kptPF === null) kn();
  1690.           if (ENABLE_BASE_PREFETCHING) {
  1691.             // if (kptPF & 1) {
  1692.             //   linker(link, 'dns-prefetch', h);
  1693.             //   link = null;
  1694.             // }
  1695.             if (kptPF & 2) {
  1696.               linker(link, 'preconnect', h);
  1697.               link = null;
  1698.             }
  1699.           }
  1700.         }
  1701.  
  1702.         for (const h of hostL2) {
  1703.           if (kptPF === null) kn();
  1704.           if (ENABLE_BASE_PREFETCHING) {
  1705.             if (kptPF & 1) {
  1706.               linker(link, 'dns-prefetch', h);
  1707.               link = null;
  1708.             }
  1709.           }
  1710.         }
  1711.  
  1712.       })
  1713.  
  1714.  
  1715.     }
  1716.  
  1717.     if (flagsFnOnInterval) flagsFnOnInterval(setInterval, clearInterval);
  1718.  
  1719.     if (DO_LINK_PREFETCH) basePrefetching();
  1720.  
  1721.     const { notifyPath7081 } = (() => {
  1722.       // DO_PARTICIPANT_LIST_HACKS
  1723.  
  1724.       const mutexParticipants = new Mutex();
  1725.  
  1726.       let uvid = 0;
  1727.       let r95dm = 0;
  1728.       let c95dm = -1;
  1729.  
  1730.       const foundMap = (base, content) => {
  1731.         /*
  1732.           let lastSearch = 0;
  1733.           let founds = base.map(baseEntry => {
  1734.             let search = content.indexOf(baseEntry, lastSearch);
  1735.             if (search < 0) return false;
  1736.             lastSearch = search + 1;
  1737.             return true;
  1738.           });
  1739.           return founds;
  1740.         */
  1741.         const contentSet = new Set(content);
  1742.         return base.map(baseEntry => contentSet.has(baseEntry));
  1743.  
  1744.       }
  1745.  
  1746.  
  1747.  
  1748.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1749.  
  1750.         const handler1 = {
  1751.           get(target, prop, receiver) {
  1752.             if (prop === 'object') {
  1753.               return participants; // avoid memory leakage
  1754.             }
  1755.             if (prop === 'type') {
  1756.               return 'splice';
  1757.             }
  1758.             return target[prop];
  1759.           }
  1760.         };
  1761.         const releaser = () => {
  1762.           participants = null;
  1763.         }
  1764.  
  1765.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1766.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1767.  
  1768.         let indexSplices = [];
  1769.         let contentUpdates = [];
  1770.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1771.           if (beforeParticipants[i] === participants[j]) {
  1772.             i++; j++;
  1773.           } else if (idsBefore[i] === idsAfter[j]) {
  1774.             // content changed
  1775.             contentUpdates.push({ indexI: i, indexJ: j })
  1776.             i++; j++;
  1777.           } else {
  1778.             let addedCount = 0;
  1779.             for (let q = j; q < foundsForAfter.length; q++) {
  1780.               if (foundsForAfter[q] === false) addedCount++;
  1781.               else break;
  1782.             }
  1783.             let removedCount = 0;
  1784.             for (let q = i; q < foundsForBefore.length; q++) {
  1785.               if (foundsForBefore[q] === false) removedCount++;
  1786.               else break;
  1787.             }
  1788.             if (!addedCount && !removedCount) {
  1789.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1790.             }
  1791.             indexSplices.push(new Proxy({
  1792.               index: j,
  1793.               addedCount: addedCount,
  1794.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1795.             }, handler1));
  1796.             i += removedCount;
  1797.             j += addedCount;
  1798.           }
  1799.         }
  1800.         foundsForBefore = null;
  1801.         foundsForAfter = null;
  1802.         idsBefore = null;
  1803.         idsAfter = null;
  1804.         beforeParticipants = null;
  1805.         return { indexSplices, contentUpdates, releaser };
  1806.  
  1807.       }
  1808.  
  1809.       /*
  1810.  
  1811.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1812.  
  1813.       VM63631:1 Error
  1814.       at customElements.get.notifyPath (<anonymous>:1:122)
  1815.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1816.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1817.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1818.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1819.       at ju (live_chat_polymer.js:1674:217)
  1820.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1821.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1822.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1823.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1824.  
  1825.       */
  1826.  
  1827.       function convertToIds(participants) {
  1828.         return participants.map(participant => {
  1829.           if (!participant || typeof participant !== 'object') {
  1830.             console.warn('Error(0xFA41): convertToIds', participant);
  1831.             return participant; // just in case
  1832.           }
  1833.           let keys = Object.keys(participant);
  1834.           // liveChatTextMessageRenderer
  1835.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1836.           // liveChatPaidMessageRenderer
  1837.           /*
  1838.  
  1839.             'yt-live-chat-participant-renderer' utilizes the following:
  1840.             authorName.simpleText: string
  1841.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1842.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1843.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1844.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1845.  
  1846.           */
  1847.           if (keys.length !== 1) {
  1848.             console.warn('Error(0xFA42): convertToIds', participant);
  1849.             return participant; // just in case
  1850.           }
  1851.           let key = keys[0];
  1852.           let renderer = (participant[key] || 0);
  1853.           let authorName = (renderer.authorName || 0);
  1854.           let text = `${authorName.simpleText || authorName.text}`
  1855.           let res = participant; // fallback if it is not a vaild entry
  1856.           if (typeof text !== 'string') {
  1857.             console.warn('Error(0xFA53): convertToIds', participant);
  1858.           } else {
  1859.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1860.             if (text.length > 1) res = text;
  1861.           }
  1862.           return res;
  1863.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1864.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1865.         });
  1866.       }
  1867.  
  1868.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1869.         // just update when content is changed.
  1870.         if (p1.authorName !== p2.authorName) return true;
  1871.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1872.         if (p1.authorBadges !== p2.authorBadges) return true;
  1873.         return false;
  1874.       } : (p1, p2) => {
  1875.         // keep integrity all the time.
  1876.         return p1 !== p2; // always true
  1877.       }
  1878.  
  1879.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1880.  
  1881.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1882.           if (path !== "participantsManager.participants") {
  1883.             return this.__notifyPath5036__.apply(this, arguments);
  1884.           }
  1885.           if (c95dm === r95dm) return;
  1886.         } else {
  1887.           const stack = new Error().stack;
  1888.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1889.             return this.__notifyPath5036__.apply(this, arguments);
  1890.           }
  1891.         }
  1892.  
  1893.         if (uvid > 1e8) uvid = uvid % 100;
  1894.         let tid = ++uvid;
  1895.  
  1896.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  1897.         mutexParticipants.lockWith(lockResolve => {
  1898.  
  1899.           const participants00 = cnt.participantsManager.participants;
  1900.  
  1901.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1902.             lockResolve();
  1903.             return;
  1904.           }
  1905.  
  1906.           let doUpdate = false;
  1907.  
  1908.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1909.  
  1910.             if (!participants00.r94dm) {
  1911.               participants00.r94dm = 1;
  1912.               if (++r95dm > 1e9) r95dm = 9;
  1913.               participants00.push = function () {
  1914.                 if (++r95dm > 1e9) r95dm = 9;
  1915.                 return Array.prototype.push.apply(this, arguments);
  1916.               }
  1917.               participants00.pop = function () {
  1918.                 if (++r95dm > 1e9) r95dm = 9;
  1919.                 return Array.prototype.pop.apply(this, arguments);
  1920.               }
  1921.               participants00.shift = function () {
  1922.                 if (++r95dm > 1e9) r95dm = 9;
  1923.                 return Array.prototype.shift.apply(this, arguments);
  1924.               }
  1925.               participants00.unshift = function () {
  1926.                 if (++r95dm > 1e9) r95dm = 9;
  1927.                 return Array.prototype.unshift.apply(this, arguments);
  1928.               }
  1929.               participants00.splice = function () {
  1930.                 if (++r95dm > 1e9) r95dm = 9;
  1931.                 return Array.prototype.splice.apply(this, arguments);
  1932.               }
  1933.               participants00.sort = function () {
  1934.                 if (++r95dm > 1e9) r95dm = 9;
  1935.                 return Array.prototype.sort.apply(this, arguments);
  1936.               }
  1937.               participants00.reverse = function () {
  1938.                 if (++r95dm > 1e9) r95dm = 9;
  1939.                 return Array.prototype.reverse.apply(this, arguments);
  1940.               }
  1941.             }
  1942.  
  1943.             if (c95dm !== r95dm) {
  1944.               c95dm = r95dm;
  1945.               doUpdate = true;
  1946.             }
  1947.  
  1948.           } else {
  1949.             doUpdate = true;
  1950.           }
  1951.  
  1952.           if (!doUpdate) {
  1953.             lockResolve();
  1954.             return;
  1955.           }
  1956.  
  1957.           const participants = participants00.slice(0);
  1958.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  1959.           beforeParticipantsMap.set(cnt, participants);
  1960.  
  1961.           const resPromise = (async () => {
  1962.  
  1963.             if (beforeParticipants.length === 0) {
  1964.               // not error
  1965.               return 0;
  1966.             }
  1967.  
  1968.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  1969.  
  1970.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  1971.             if (beforeParticipants.length !== countOfElements) {
  1972.               // there is somewrong for the cache. - sometimes happen
  1973.               return 0;
  1974.             }
  1975.  
  1976.             const idsBefore = convertToIds(beforeParticipants);
  1977.             const idsAfter = convertToIds(participants);
  1978.  
  1979.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  1980.  
  1981.             let res = 1; // default 1 for no update
  1982.  
  1983.             if (indexSplices.length >= 1) {
  1984.  
  1985.  
  1986.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  1987.               // let p1 = indexSplices[0].removed;
  1988.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  1989.  
  1990.               /* folllow
  1991.                   a.notifyPath(c + ".splices", d);
  1992.                   a.notifyPath(c + ".length", b.length);
  1993.               */
  1994.               // stampDomArraySplices_
  1995.  
  1996.  
  1997.               await new Promise(resolve => {
  1998.                 cnt.resolveForDOMRendering781 = resolve;
  1999.  
  2000.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  2001.                   indexSplices
  2002.                 });
  2003.                 indexSplices = null;
  2004.                 releaser();
  2005.                 releaser = null;
  2006.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  2007.                   participants.length
  2008.                 );
  2009.  
  2010.               });
  2011.  
  2012.               await Promise.resolve(0); // play safe for the change of 'length'
  2013.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  2014.  
  2015.               let wrongSize = participants.length !== countOfElements
  2016.               if (wrongSize) {
  2017.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  2018.                 return 0;
  2019.               }
  2020.  
  2021.               res = 2 | 4;
  2022.  
  2023.             } else {
  2024.  
  2025.               indexSplices = null;
  2026.               releaser();
  2027.               releaser = null;
  2028.  
  2029.               if (participants.length !== countOfElements) {
  2030.                 // other unhandled cases
  2031.                 return 0;
  2032.               }
  2033.  
  2034.             }
  2035.  
  2036.             // participants.length === countOfElements before contentUpdates
  2037.             if (contentUpdates.length >= 1) {
  2038.               for (const contentUpdate of contentUpdates) {
  2039.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  2040.                 if (isChanged) {
  2041.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  2042.                   res |= 4 | 8;
  2043.                 }
  2044.               }
  2045.             }
  2046.             contentUpdates = null;
  2047.  
  2048.             return res;
  2049.  
  2050.  
  2051.           })();
  2052.  
  2053.  
  2054.           resPromise.then(resValue => {
  2055.  
  2056.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  2057.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  2058.             if (resValue === 0) {
  2059.               new Promise(resolve => {
  2060.                 cnt.resolveForDOMRendering781 = resolve;
  2061.                 isLogRequired && console.log("Full Refresh begins");
  2062.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  2063.               }).then(() => {
  2064.                 isLogRequired && console.log("Full Refresh ends");
  2065.                 console.groupEnd();
  2066.               }).then(lockResolve);
  2067.               return;
  2068.             }
  2069.  
  2070.             const delayLockResolve = (resValue & 4) === 4;
  2071.  
  2072.             if (delayLockResolve) {
  2073.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  2074.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  2075.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  2076.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  2077.               isLogRequired && console.groupEnd();
  2078.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2079.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2080.               requestAnimationFrame(lockResolve);
  2081.             } else {
  2082.               lockResolve();
  2083.             }
  2084.  
  2085.           });
  2086.  
  2087.         });
  2088.  
  2089.       }
  2090.  
  2091.       return { notifyPath7081 };
  2092.  
  2093.     })();
  2094.  
  2095.     const whenDefinedMultiple = async (tags) => {
  2096.  
  2097.       const sTags = [...new Set(tags)];
  2098.       const len = sTags.length;
  2099.  
  2100.       const pTags = new Array(len);
  2101.       for (let i = 0; i < len; i++) {
  2102.         pTags[i] = customElements.whenDefined(sTags[i]);
  2103.       }
  2104.  
  2105.       await Promise.all(pTags);
  2106.       pTags.length = 0;
  2107.  
  2108.       return sTags;
  2109.  
  2110.     }
  2111.  
  2112.     const onRegistryReadyForDataManipulation = () => {
  2113.  
  2114.       function dummy5035(a, b, c) { }
  2115.       function dummy411(a, b, c) { }
  2116.  
  2117.  
  2118.  
  2119.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2120.  
  2121.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2122.  
  2123.         const tag = "yt-live-chat-participant-list-renderer";
  2124.         const cProto = getProto(document.createElement(tag));
  2125.         if (!cProto || typeof cProto.attached !== 'function') {
  2126.           // for _registered, proto.attached shall exist when the element is defined.
  2127.           // for controller extraction, attached shall exist when instance creates.
  2128.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2129.           return;
  2130.         }
  2131.  
  2132.  
  2133.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2134.  
  2135.         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'];
  2136.         const fgs = {};
  2137.         for (const key of fgsArr) fgs[key] = undefined;
  2138.  
  2139.         try {
  2140.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2141.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2142.         } catch (e) { }
  2143.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2144.  
  2145.         const canDoReplacement = (() => {
  2146.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2147.             console.warn('YouTube Live Chat Tamer is running.');
  2148.             return;
  2149.           }
  2150.  
  2151.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2152.             console.warn('YouTube Live Chat Tamer is running.');
  2153.             return;
  2154.           }
  2155.  
  2156.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2157.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2158.  
  2159.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2160.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2161.             return;
  2162.           }
  2163.  
  2164.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2165.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2166.             return;
  2167.           }
  2168.  
  2169.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2170.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2171.             return;
  2172.           }
  2173.           return true;
  2174.         })();
  2175.  
  2176.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2177.  
  2178.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2179.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2180.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2181.           const s = fiRSCB.split('.');
  2182.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2183.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2184.           } else {
  2185.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2186.           }
  2187.         } else {
  2188.           console.log("flushRenderStamperComponentBindings_ - not found");
  2189.         }
  2190.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2191.  
  2192.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2193.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2194.           cProto.flushRenderStamperComponentBindings_ = function () {
  2195.             // console.log('flushRenderStamperComponentBindings_')
  2196.             this.flushRenderStamperComponentBindings66_();
  2197.             if (this.resolveForDOMRendering781) {
  2198.               this.resolveForDOMRendering781();
  2199.               this.resolveForDOMRendering781 = null;
  2200.             }
  2201.           };
  2202.         }
  2203.  
  2204.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2205.           const container = ((this || 0).$ || 0).participants;
  2206.           if (!container) return 0;
  2207.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2208.         }
  2209.  
  2210.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2211.  
  2212.         cProto.__attached412__ = cProto.attached;
  2213.         const fpPList = function (hostElement) {
  2214.           const cnt = hostElement.inst || hostElement;
  2215.           if (beforeParticipantsMap.has(cnt)) return;
  2216.           hostElement.classList.add('n9fJ3');
  2217.  
  2218.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2219.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2220.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2221.             return;
  2222.           }
  2223.  
  2224.           groupCollapsed("Participant List attached", "");
  2225.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2226.           //   console.log(123, 'appendChild');
  2227.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2228.           // }
  2229.  
  2230.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2231.           //   console.log(123, 'insertBefore');
  2232.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2233.           // }
  2234.  
  2235.           cnt.__notifyPath5036__ = cnt.notifyPath
  2236.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2237.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2238.           console.log(`initial number of participants: ${participants.length}`);
  2239.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2240.           beforeParticipantsMap.set(cnt, newParticipants);
  2241.           cnt.notifyPath = notifyPath7081;
  2242.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2243.           console.groupEnd();
  2244.         }
  2245.         cProto.attached = function () {
  2246.           fpPList(this.hostElement || this);
  2247.           this.__attached412__.apply(this, arguments);
  2248.         };
  2249.  
  2250.  
  2251.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2252.  
  2253.           /** @type {boolean | (()=>boolean)} */
  2254.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2255.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2256.  
  2257.             let lastMessageDate = 0;
  2258.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2259.  
  2260.             cProto.stampDomArray_ = function (...args) {
  2261.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2262.                 if (typeof toUseMaintainStableList === 'function') {
  2263.                   toUseMaintainStableList = toUseMaintainStableList();
  2264.                 }
  2265.                 args[5] = toUseMaintainStableList;
  2266.                 let currentDate = Date.now();
  2267.                 if (currentDate - lastMessageDate > 440) {
  2268.                   lastMessageDate = currentDate;
  2269.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2270.                 }
  2271.               }
  2272.               return this.stampDomArray66_.apply(this, args);
  2273.             }
  2274.  
  2275.             cProto.stampDomArray_.nIegT = 1;
  2276.  
  2277.           }
  2278.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2279.         } else {
  2280.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2281.         }
  2282.  
  2283.         console.groupEnd();
  2284.  
  2285.         if (onPageElements.length >= 1) {
  2286.           for (const s of onPageElements) {
  2287.             if ((s.inst || s).isAttached === true) {
  2288.               fpPList(s);
  2289.             }
  2290.           }
  2291.         }
  2292.  
  2293.       }).catch(console.warn);
  2294.  
  2295.     };
  2296.  
  2297.     if (DO_PARTICIPANT_LIST_HACKS) {
  2298.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2299.     }
  2300.  
  2301.  
  2302.  
  2303.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2304.  
  2305.  
  2306.  
  2307.  
  2308.     const bnForDelayChatOccurrence = () => {
  2309.  
  2310.       document.addEventListener('animationstart', (evt) => {
  2311.  
  2312.         if (evt.animationName === 'dontRenderAnimation') {
  2313.           evt.target.classList.remove('dont-render');
  2314.           if (scrollChatFn) scrollChatFn();
  2315.         }
  2316.  
  2317.       }, true);
  2318.  
  2319.       const f = (elm) => {
  2320.         if (elm && elm.nodeType === 1) {
  2321.           if (!skipDontRender && allowDontRender === true) {
  2322.             // innerTextFixFn();
  2323.             elm.classList.add('dont-render');
  2324.           }
  2325.         }
  2326.       }
  2327.  
  2328.       Node.prototype.__appendChild931__ = function (a) {
  2329.         a = dr(a);
  2330.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2331.           if (a && a.nodeType === 1) f(a);
  2332.           else if (a instanceof DocumentFragment) {
  2333.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2334.               f(n);
  2335.             }
  2336.           }
  2337.         }
  2338.       }
  2339.  
  2340.       Node.prototype.__appendChild932__ = function () {
  2341.         this.__appendChild931__.apply(this, arguments);
  2342.         return Node.prototype.appendChild.apply(this, arguments);
  2343.       }
  2344.  
  2345.  
  2346.     };
  2347.  
  2348.     const watchUserCSS = () => {
  2349.  
  2350.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2351.  
  2352.       const getElemFromWR = (nr) => {
  2353.         const n = kRef(nr);
  2354.         if (n && n.isConnected) return n;
  2355.         return null;
  2356.       }
  2357.  
  2358.       const clearContentVisibilitySizing = () => {
  2359.         Promise.resolve().then(() => {
  2360.  
  2361.           const e = document.querySelector('#show-more[disabled]');
  2362.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2363.  
  2364.           let lastVisibleItemWR = null;
  2365.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2366.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2367.             elm.setAttribute('wSr93', '');
  2368.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2369.           }
  2370.           requestAnimationFrame(() => {
  2371.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2372.             if (btnShowMore) btnShowMore.click();
  2373.             else {
  2374.               // would not work if switch it frequently
  2375.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2376.               if (lastVisibleItem) {
  2377.  
  2378.                 Promise.resolve()
  2379.                   .then(() => lastVisibleItem.scrollIntoView())
  2380.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2381.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2382.                   .catch(e => { }) // break the chain when method not callable
  2383.  
  2384.               }
  2385.             }
  2386.           });
  2387.  
  2388.         });
  2389.  
  2390.       }
  2391.  
  2392.       const mutObserver = new MutationObserver((mutations) => {
  2393.         for (const mutation of mutations) {
  2394.           if ((mutation.addedNodes || 0).length >= 1) {
  2395.             for (const addedNode of mutation.addedNodes) {
  2396.               if (addedNode.nodeName === 'STYLE') {
  2397.                 clearContentVisibilitySizing();
  2398.                 return;
  2399.               }
  2400.             }
  2401.           }
  2402.           if ((mutation.removedNodes || 0).length >= 1) {
  2403.             for (const removedNode of mutation.removedNodes) {
  2404.               if (removedNode.nodeName === 'STYLE') {
  2405.                 clearContentVisibilitySizing();
  2406.                 return;
  2407.               }
  2408.             }
  2409.           }
  2410.         }
  2411.       });
  2412.  
  2413.       mutObserver.observe(document.documentElement, {
  2414.         childList: true,
  2415.         subtree: false
  2416.       });
  2417.       mutObserver.observe(document.head, {
  2418.         childList: true,
  2419.         subtree: false
  2420.       });
  2421.       mutObserver.observe(document.body, {
  2422.         childList: true,
  2423.         subtree: false
  2424.       });
  2425.  
  2426.     }
  2427.  
  2428.  
  2429.     class WillChangeController {
  2430.       constructor(itemScroller, willChangeValue) {
  2431.         this.element = itemScroller;
  2432.         this.counter = 0;
  2433.         this.active = false;
  2434.         this.willChangeValue = willChangeValue;
  2435.       }
  2436.  
  2437.       beforeOper() {
  2438.         if (!this.active) {
  2439.           this.active = true;
  2440.           this.element.style.willChange = this.willChangeValue;
  2441.         }
  2442.         this.counter++;
  2443.       }
  2444.  
  2445.       afterOper() {
  2446.         const c = this.counter;
  2447.         requestAnimationFrame(() => {
  2448.           if (c === this.counter) {
  2449.             this.active = false;
  2450.             this.element.style.willChange = '';
  2451.           }
  2452.         });
  2453.       }
  2454.  
  2455.       release() {
  2456.         const element = this.element;
  2457.         this.element = null;
  2458.         this.counter = 1e16;
  2459.         this.active = false;
  2460.         try {
  2461.           element.style.willChange = '';
  2462.         } catch (e) { }
  2463.       }
  2464.  
  2465.     }
  2466.  
  2467.  
  2468.     const skzData = (skz) => skz.data = {
  2469.       "message": {
  2470.         "runs": [
  2471.           {
  2472.             "text": "em2o"
  2473.           },
  2474.           {
  2475.             "emoji": {
  2476.               "emojiId": "cm35z",
  2477.               "shortcuts": [
  2478.                 ":_s:",
  2479.                 ":s:"
  2480.               ],
  2481.               "searchTerms": [
  2482.                 "_s",
  2483.                 "s"
  2484.               ],
  2485.               "image": {
  2486.                 "thumbnails": [
  2487.                   {
  2488.                     "url": dummyImgURL,
  2489.                     "width": 48,
  2490.                     "height": 48
  2491.                   }
  2492.                 ],
  2493.                 "accessibility": {
  2494.                   "accessibilityData": {
  2495.                     "label": "s"
  2496.                   }
  2497.                 }
  2498.               },
  2499.               "isCustomEmoji": true
  2500.             }
  2501.           },
  2502.           {
  2503.             "text": "ji"
  2504.           }
  2505.         ]
  2506.       },
  2507.       "authorName": {
  2508.         "simpleText": "N"
  2509.       },
  2510.       "authorPhoto": {
  2511.         "thumbnails": [
  2512.           {
  2513.             "url": dummyImgURL,
  2514.             "width": 64,
  2515.             "height": 64
  2516.           }
  2517.         ]
  2518.       },
  2519.       "contextMenuEndpoint": {
  2520.         "commandMetadata": {
  2521.           "webCommandMetadata": {
  2522.             "ignoreNavigation": true
  2523.           }
  2524.         },
  2525.         "liveChatItemContextMenuEndpoint": {
  2526.           "params": "123=="
  2527.         }
  2528.       },
  2529.       "id": "sk35z",
  2530.       "timestampUsec": "1232302352350000",
  2531.       "authorBadges": [
  2532.         {
  2533.           "liveChatAuthorBadgeRenderer": {
  2534.             "customThumbnail": {
  2535.               "thumbnails": [
  2536.                 {
  2537.                   "url": dummyImgURL,
  2538.                   "width": 16,
  2539.                   "height": 16
  2540.                 },
  2541.                 {
  2542.                   "url": dummyImgURL,
  2543.                   "width": 32,
  2544.                   "height": 32
  2545.                 }
  2546.               ]
  2547.             },
  2548.             "tooltip": "T",
  2549.             "accessibility": {
  2550.               "accessibilityData": {
  2551.                 "label": "E"
  2552.               }
  2553.             }
  2554.           }
  2555.         }
  2556.       ],
  2557.       "authorExternalChannelId": "A",
  2558.       "contextMenuAccessibility": {
  2559.         "accessibilityData": {
  2560.           "label": "E"
  2561.         }
  2562.       },
  2563.       "timestampText": {
  2564.         "simpleText": "0:43"
  2565.       }
  2566.     };
  2567.  
  2568.  
  2569.  
  2570.     const { lcRendererElm, visObserver } = (() => {
  2571.  
  2572.  
  2573.  
  2574.       let lcRendererWR = null;
  2575.  
  2576.       const lcRendererElm = () => {
  2577.         let lcRenderer = kRef(lcRendererWR);
  2578.         if (!lcRenderer || !lcRenderer.isConnected) {
  2579.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2580.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2581.         }
  2582.         return lcRenderer;
  2583.       };
  2584.  
  2585.  
  2586.       let hasFirstShowMore = false;
  2587.  
  2588.       const visObserverFn = (entry) => {
  2589.  
  2590.         const target = entry.target;
  2591.         if (!target) return;
  2592.         // if(target.classList.contains('dont-render')) return;
  2593.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2594.         // const h = entry.boundingClientRect.height;
  2595.         /*
  2596.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2597.             // e.g. under fullscreen. the element created but not rendered.
  2598.             target.setAttribute('wSr93', '');
  2599.             return;
  2600.         }
  2601.         */
  2602.         if (isVisible) {
  2603.           // target.style.setProperty('--wsr94', h + 'px');
  2604.           target.setAttribute('wSr93', 'visible');
  2605.           if (nNextElem(target) === null) {
  2606.  
  2607.             // firstVisibleItemDetected = true;
  2608.             /*
  2609.               if (dateNow() - lastScroll < 80) {
  2610.                   lastLShow = 0;
  2611.                   lastScroll = 0;
  2612.                   Promise.resolve().then(clickShowMore);
  2613.               } else {
  2614.                   lastLShow = dateNow();
  2615.               }
  2616.               */
  2617.             // lastLShow = dateNow();
  2618.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2619.             // implement inside visObserver to ensure there is sufficient delay
  2620.             hasFirstShowMore = true;
  2621.             requestAnimationFrame(() => {
  2622.               // foreground page
  2623.               // page visibly ready -> load the latest comments at initial loading
  2624.               const lcRenderer = lcRendererElm();
  2625.               if (lcRenderer) {
  2626.                 (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2627.               }
  2628.             });
  2629.           }
  2630.         }
  2631.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2632.  
  2633.           // target.style.setProperty('--wsr94', h + 'px');
  2634.           target.setAttribute('wSr93', 'hidden');
  2635.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2636.  
  2637.       }
  2638.  
  2639.  
  2640.  
  2641.       const visObserver = new IntersectionObserver((entries) => {
  2642.  
  2643.         for (const entry of entries) {
  2644.  
  2645.           Promise.resolve(entry).then(visObserverFn);
  2646.  
  2647.         }
  2648.  
  2649.       }, {
  2650.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2651.         rootMargin: "0px",
  2652.         threshold: [0.05, 0.95],
  2653.       });
  2654.  
  2655.  
  2656.       return { lcRendererElm, visObserver }
  2657.  
  2658.  
  2659.     })();
  2660.  
  2661.     const { setupMutObserver } = (() => {
  2662.  
  2663.       const mutFn = (items) => {
  2664.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2665.           if (node.hasAttribute('wSr93')) break;
  2666.           node.setAttribute('wSr93', '');
  2667.           visObserver.observe(node);
  2668.         }
  2669.       }
  2670.  
  2671.       const mutObserver = new MutationObserver((mutations) => {
  2672.         const items = (mutations[0] || 0).target;
  2673.         if (!items) return;
  2674.         if (sk35zResolveFn) {
  2675.           sk35zResolveFn();
  2676.           sk35zResolveFn = null;
  2677.         }
  2678.         mutFn(items);
  2679.       });
  2680.  
  2681.       const setupMutObserver = (m2) => {
  2682.         scrollChatFn = null;
  2683.         mutObserver.disconnect();
  2684.         mutObserver.takeRecords();
  2685.         if (m2) {
  2686.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2687.           if (typeof m2.__appendChild932__ === 'function') {
  2688.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2689.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2690.           }
  2691.           mutObserver.observe(m2, {
  2692.             childList: true,
  2693.             subtree: false
  2694.           });
  2695.           mutFn(m2);
  2696.  
  2697.           const isFirstList = firstList;
  2698.           firstList = false;
  2699.  
  2700.           if (ENABLE_OVERFLOW_ANCHOR) {
  2701.  
  2702.             let items = m2;
  2703.             let addedAnchor = false;
  2704.             if (items) {
  2705.               if (items.nextElementSibling === null) {
  2706.                 items.classList.add('no-anchor');
  2707.                 addedAnchor = true;
  2708.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2709.               }
  2710.             }
  2711.  
  2712.  
  2713.  
  2714.             if (addedAnchor) {
  2715.               nodeParent(m2).classList.add('no-anchor'); // required
  2716.             }
  2717.  
  2718.           }
  2719.  
  2720.           // let div = document.createElement('div');
  2721.           // div.id = 'qwcc';
  2722.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2723.           // bufferRegion =div;
  2724.  
  2725.           // buffObserver.takeRecords();
  2726.           // buffObserver.disconnect();
  2727.           // buffObserver.observe(div,  {
  2728.           //     childList: true,
  2729.           //     subtree: false
  2730.           // })
  2731.  
  2732.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2733.  
  2734.             promiseForCustomYtElementsReady.then(() => {
  2735.  
  2736.               customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2737.  
  2738.  
  2739.  
  2740.  
  2741.                 setTimeout(() => {
  2742.  
  2743.                   /** @type {HTMLTemplateElement} */
  2744.                   let skz = document.createElement('yt-live-chat-text-message-renderer');
  2745.  
  2746.                   let cz1 = null;
  2747.  
  2748.                   if (skz && 'data' in skz && 'attached' in skz) {
  2749.  
  2750.                     const deferredZy1 = new Promise(resolve => {
  2751.  
  2752.                       skz.attached = function () {
  2753.                         cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2754.                         resolve(skz.textContent);
  2755.                       }
  2756.                       skz.detached = function () {
  2757.  
  2758.                       }
  2759.  
  2760.                     });
  2761.                     skz.id = 'sk35z';
  2762.                     skzData(skz);
  2763.  
  2764.  
  2765.                     sk35zResolveFn = null;
  2766.                     const deferredMutation = new Promise(resolve => {
  2767.                       sk35zResolveFn = resolve;
  2768.                       HTMLElement.prototype.appendChild.call(m2, skz);
  2769.                     });
  2770.  
  2771.                     Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2772.                       const [zy1, _] = res;
  2773.                       function fn() {
  2774.                         const zy2 = skz.textContent;
  2775.                         const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2776.                         if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2777.                           allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2778.                         }
  2779.                         if (allowDontRender === false) {
  2780.  
  2781.                           console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2782.                             "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2783.                             "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2784.                           );
  2785.  
  2786.                           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');
  2787.  
  2788.                           console.groupEnd();
  2789.                         } else if (allowDontRender === true) {
  2790.                           return true;
  2791.                         }
  2792.                       }
  2793.                       await new Promise(r => setTimeout(r, 1));
  2794.                       if (fn()) {
  2795.                         await new Promise(r => requestAnimationFrame(r));
  2796.                         if (fn()) {
  2797.                           skz.remove();
  2798.                           skz.textContent = '';
  2799.                           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2800.                         }
  2801.                       }
  2802.                     });
  2803.  
  2804.                   }
  2805.  
  2806.                 }, 1);
  2807.  
  2808.               }).catch(console.warn);
  2809.  
  2810.             })
  2811.  
  2812.           }
  2813.  
  2814.  
  2815.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2816.  
  2817.             (() => {
  2818.  
  2819.               const tag = 'yt-iframed-player-events-relay'
  2820.               const dummy = document.createElement(tag);
  2821.  
  2822.               const cProto = getProto(dummy);
  2823.               if (!cProto || !cProto.handlePostMessage_) {
  2824.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2825.                 return;
  2826.               }
  2827.  
  2828.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2829.  
  2830.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2831.  
  2832.                 cProto.handlePostMessage67_ = function (a) {
  2833.  
  2834.                   const da = a.data;
  2835.  
  2836.  
  2837.  
  2838.                   playEventsStack = playEventsStack.then(() => {
  2839.  
  2840.  
  2841.  
  2842.                     if ('yt-player-state-change' in da) {
  2843.  
  2844.                       const qc = da['yt-player-state-change'];
  2845.  
  2846.  
  2847.                       let isQcChanged = false;
  2848.  
  2849.                       if (qc === 2) { isQcChanged = qc !== _playerState; _playerState = 2; relayCount = 0; } // paused
  2850.                       else if (qc === 3) { isQcChanged = qc !== _playerState; _playerState = 3; } // playing
  2851.                       else if (qc === 1) { isQcChanged = qc !== _playerState; _playerState = 1; } // playing
  2852.  
  2853.  
  2854.                       if ((isQcChanged) && playerState !== _playerState) {
  2855.                         playerEventsByIframeRelay = true;
  2856.                         onPlayStateChangePromise = new Promise((resolve) => {
  2857.                           let k = _playerState;
  2858.                           foregroundPromiseFn().then(() => {
  2859.                             if (k === _playerState && playerState !== _playerState) playerState = _playerState;
  2860.                             onPlayStateChangePromise = null;
  2861.                             resolve();
  2862.                           })
  2863.                         }).catch(console.warn);
  2864.  
  2865.                       }
  2866.  
  2867.                     } else if ('yt-player-video-progress' in da) {
  2868.                       const vp = da['yt-player-video-progress'];
  2869.  
  2870.  
  2871.                       relayCount++;
  2872.                       lastPlayerProgress = vp > 0 ? vp : 0;
  2873.  
  2874.  
  2875.                       if (relayPromise && vp > 0 && relayCount >= 2) {
  2876.                         if (onPlayStateChangePromise) {
  2877.                           onPlayStateChangePromise.then(() => {
  2878.                             relayPromise && relayPromise.resolve();
  2879.                             relayPromise = null;
  2880.                           })
  2881.                         } else {
  2882.                           relayPromise.resolve();
  2883.                           relayPromise = null;
  2884.                         }
  2885.                       }
  2886.  
  2887.  
  2888.  
  2889.                     }
  2890.  
  2891.  
  2892.  
  2893.  
  2894.  
  2895.  
  2896.                     return this.handlePostMessage66_(a);
  2897.  
  2898.  
  2899.  
  2900.                   }).catch(console.warn);
  2901.  
  2902.                 }
  2903.  
  2904.  
  2905.                 cProto.handlePostMessage_ = function (a) {
  2906.  
  2907.  
  2908.                   const da = (a || 0).data || 0;
  2909.  
  2910.                   if (typeof da !== 'object') return;
  2911.  
  2912.                   if (waitForInitialDataCompletion === 1) return;
  2913.  
  2914.                   if (!isPlayProgressTriggered) {
  2915.                     isPlayProgressTriggered = true;
  2916.  
  2917.                     if ('yt-player-video-progress' in da) {
  2918.                       waitForInitialDataCompletion = 1;
  2919.  
  2920.                       const wrapWith = (data) => {
  2921.                         const { origin } = a;
  2922.                         return {
  2923.                           origin,
  2924.                           data
  2925.                         };
  2926.                       }
  2927.  
  2928.                       this.handlePostMessage67_(wrapWith({
  2929.                         "yt-iframed-parent-ready": true
  2930.                       }));
  2931.  
  2932.  
  2933.  
  2934.                       playEventsStack = playEventsStack.then(() => {
  2935.  
  2936.  
  2937.  
  2938.                         const lcr = document.querySelector('yt-live-chat-renderer');
  2939.                         const psc = document.querySelector("yt-player-seek-continuation");
  2940.                         if (lcr && psc && lcr.replayBuffer_) {
  2941.  
  2942.  
  2943.                           const rbProgress = lcr.replayBuffer_.lastVideoOffsetTimeMsec;
  2944.                           const daProgress = da['yt-player-video-progress'] * 1000
  2945.                           // document.querySelector('yt-live-chat-renderer').playerProgressChanged_(1e-5);
  2946.  
  2947.  
  2948.                           const front_ = (lcr.replayBuffer_.replayQueue || 0).front_;
  2949.                           const back_ = (lcr.replayBuffer_.replayQueue || 0).back_;
  2950.  
  2951.  
  2952.                           // console.log(deepCopy( front_))
  2953.                           // console.log(deepCopy( back_))
  2954.                           // console.log(rbProgress, daProgress, )
  2955.                           if (front_ && back_ && rbProgress > daProgress && back_.length > 2 && back_.some(e => e && +e.videoOffsetTimeMsec > daProgress) && back_.some(e => e && +e.videoOffsetTimeMsec < daProgress)) {
  2956.                             // no action
  2957.                             // console.log('ss1')
  2958.                           } else if (rbProgress < daProgress + 3400 && rbProgress > daProgress - 1200) {
  2959.                             //  daProgress - 1200 < rbProgress < daProgress + 3400
  2960.                             // console.log('ss2')
  2961.                           } else {
  2962.  
  2963.                             // console.log('ss3')
  2964.                             // lcr.replayBuffer_.replayQueue.back_.length= 0;
  2965.                             // lcr.replayBuffer_.replayQueue.front_.length= 0;
  2966.  
  2967.                             // lcr
  2968.                             lcr.previousProgressSec = 1E-5;
  2969.                             // lcr._setIsSeeking(!0),
  2970.                             lcr.replayBuffer_.clear()
  2971.                             psc.fireSeekContinuation_(da['yt-player-video-progress']);
  2972.                           }
  2973.  
  2974.                         }
  2975.  
  2976.  
  2977.                         waitForInitialDataCompletion = 2;
  2978.  
  2979.                         this.handlePostMessage_(a);
  2980.  
  2981.  
  2982.                       }).catch(console.warn);
  2983.  
  2984.  
  2985.  
  2986.                       return;
  2987.  
  2988.                     }
  2989.  
  2990.                   }
  2991.  
  2992.  
  2993.  
  2994.                   this.handlePostMessage67_(a);
  2995.  
  2996.  
  2997.  
  2998.                 }
  2999.  
  3000.               }
  3001.  
  3002.  
  3003.             })();
  3004.  
  3005.           }
  3006.  
  3007.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  3008.             setTimeout(() => {
  3009.               if (!hasTimerModified) return;
  3010.               const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  3011.               if (!tickerRenderer) return;
  3012.  
  3013.               const items = (tickerRenderer.$ || 0).items || 0;
  3014.               if (!items) return;
  3015.               const template = document.createElement('template');
  3016.               template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  3017.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  3018.                 dimmed="" [dummy777]>
  3019.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  3020.                   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));">
  3021.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  3022.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  3023.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  3024.                       style="background-color: transparent;" loaded=""><img id="img"
  3025.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  3026.                         src="${dummyImgURL}"></yt-img-shadow777>
  3027.  
  3028.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  3029.                   </div>
  3030.                 </div>
  3031.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  3032.               const dummy777 = template.content.firstElementChild;
  3033.               items.appendChild(dummy777);
  3034.               Promise.resolve(dummy777).then((dummy777) => {
  3035.                 let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  3036.                 if (container.isConnected === true) {
  3037.  
  3038.                   const evaluated = `${getComputedStyle(container).background}`;
  3039.  
  3040.                   container = null;
  3041.                   dummy777.remove();
  3042.                   dummy777.textContent = '';
  3043.                   dummy777 = null;
  3044.  
  3045.                   if (evaluated.indexOf('0.') < 4) {
  3046.  
  3047.                     // not fulfilling
  3048.                     // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3049.  
  3050.                     console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3051.                       "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3052.                       "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3053.                     );
  3054.                     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');
  3055.                     console.groupEnd();
  3056.  
  3057.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  3058.  
  3059.                   } else {
  3060.  
  3061.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3062.                   }
  3063.                 }
  3064.               });
  3065.  
  3066.             }, 800);
  3067.           }
  3068.  
  3069.         }
  3070.       }
  3071.  
  3072.       return { setupMutObserver };
  3073.  
  3074.  
  3075.  
  3076.     })();
  3077.  
  3078.     const setupEvents = () => {
  3079.  
  3080.  
  3081.       let scrollCount = 0;
  3082.  
  3083.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  3084.  
  3085.  
  3086.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  3087.  
  3088.         const lcRenderer = lcRendererElm();
  3089.         if (lcRenderer) {
  3090.           const cnt = (lcRenderer.inst || lcRenderer);
  3091.           if (!cnt.hasUserJustInteracted11_) return;
  3092.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  3093.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  3094.           }
  3095.         }
  3096.  
  3097.       }
  3098.  
  3099.       document.addEventListener('scroll', (evt) => {
  3100.         if (!evt || !evt.isTrusted) return;
  3101.         // lastScroll = dateNow();
  3102.         if (++scrollCount > 1e9) scrollCount = 9;
  3103.       }, passiveCapture); // support contain => support passive
  3104.  
  3105.       let lastScrollCount = -1;
  3106.       document.addEventListener('wheel', (evt) => {
  3107.         if (!evt || !evt.isTrusted) return;
  3108.         if (lastScrollCount === scrollCount) return;
  3109.         lastScrollCount = scrollCount;
  3110.         lastWheel = dateNow();
  3111.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3112.       }, passiveCapture); // support contain => support passive
  3113.  
  3114.       document.addEventListener('mousedown', (evt) => {
  3115.         if (!evt || !evt.isTrusted) return;
  3116.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3117.         lastMouseDown = dateNow();
  3118.         currentMouseDown = true;
  3119.         lastUserInteraction = lastMouseDown;
  3120.       }, passiveCapture);
  3121.  
  3122.       document.addEventListener('pointerdown', (evt) => {
  3123.         if (!evt || !evt.isTrusted) return;
  3124.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3125.         lastMouseDown = dateNow();
  3126.         currentMouseDown = true;
  3127.         lastUserInteraction = lastMouseDown;
  3128.       }, passiveCapture);
  3129.  
  3130.       document.addEventListener('click', (evt) => {
  3131.         if (!evt || !evt.isTrusted) return;
  3132.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3133.         lastMouseDown = lastMouseUp = dateNow();
  3134.         currentMouseDown = false;
  3135.         lastUserInteraction = lastMouseDown;
  3136.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3137.       }, passiveCapture);
  3138.  
  3139.       document.addEventListener('tap', (evt) => {
  3140.         if (!evt || !evt.isTrusted) return;
  3141.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3142.         lastMouseDown = lastMouseUp = dateNow();
  3143.         currentMouseDown = false;
  3144.         lastUserInteraction = lastMouseDown;
  3145.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3146.       }, passiveCapture);
  3147.  
  3148.  
  3149.       document.addEventListener('mouseup', (evt) => {
  3150.         if (!evt || !evt.isTrusted) return;
  3151.         if (currentMouseDown) {
  3152.           lastMouseUp = dateNow();
  3153.           currentMouseDown = false;
  3154.           lastUserInteraction = lastMouseUp;
  3155.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3156.         }
  3157.       }, passiveCapture);
  3158.  
  3159.  
  3160.       document.addEventListener('pointerup', (evt) => {
  3161.         if (!evt || !evt.isTrusted) return;
  3162.         if (currentMouseDown) {
  3163.           lastMouseUp = dateNow();
  3164.           currentMouseDown = false;
  3165.           lastUserInteraction = lastMouseUp;
  3166.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3167.         }
  3168.       }, passiveCapture);
  3169.  
  3170.       document.addEventListener('touchstart', (evt) => {
  3171.         if (!evt || !evt.isTrusted) return;
  3172.         lastTouchDown = dateNow();
  3173.         currentTouchDown = true;
  3174.         lastUserInteraction = lastTouchDown;
  3175.       }, passiveCapture);
  3176.  
  3177.       document.addEventListener('touchmove', (evt) => {
  3178.         if (!evt || !evt.isTrusted) return;
  3179.         lastTouchDown = dateNow();
  3180.         currentTouchDown = true;
  3181.         lastUserInteraction = lastTouchDown;
  3182.       }, passiveCapture);
  3183.  
  3184.       document.addEventListener('touchend', (evt) => {
  3185.         if (!evt || !evt.isTrusted) return;
  3186.         if (currentTouchDown) {
  3187.           lastTouchUp = dateNow();
  3188.           currentTouchDown = false;
  3189.           lastUserInteraction = lastTouchUp;
  3190.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3191.         }
  3192.       }, passiveCapture);
  3193.  
  3194.       document.addEventListener('touchcancel', (evt) => {
  3195.         if (!evt || !evt.isTrusted) return;
  3196.         if (currentTouchDown) {
  3197.           lastTouchUp = dateNow();
  3198.           currentTouchDown = false;
  3199.           lastUserInteraction = lastTouchUp;
  3200.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3201.         }
  3202.       }, passiveCapture);
  3203.  
  3204.  
  3205.     }
  3206.  
  3207.  
  3208.     const onRegistryReadyForDOMOperations = () => {
  3209.  
  3210.       let firstCheckedOnYtInit = false;
  3211.  
  3212.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  3213.  
  3214.       const mightFirstCheckOnYtInit = () => {
  3215.         if (firstCheckedOnYtInit) return;
  3216.         firstCheckedOnYtInit = true;
  3217.  
  3218.         if (!document.body || !document.head) return;
  3219.         if (!assertorURL()) return;
  3220.  
  3221.         addCssManaged();
  3222.  
  3223.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  3224.         if (efsContainer && efsContainer.parentNode !== document.body) {
  3225.           document.body.appendChild(efsContainer);
  3226.         }
  3227.  
  3228.       };
  3229.  
  3230.       if (!assertorURL()) return;
  3231.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3232.  
  3233.       if (document.documentElement && document.head) {
  3234.         addCssManaged();
  3235.       }
  3236.       // console.log(document.body===null)
  3237.  
  3238.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3239.  
  3240.         const tag = "yt-live-chat-item-list-renderer"
  3241.         const dummy = document.createElement(tag);
  3242.  
  3243.         const cProto = getProto(dummy);
  3244.         if (!cProto || !cProto.attached) {
  3245.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3246.           return;
  3247.         }
  3248.  
  3249.         mightFirstCheckOnYtInit();
  3250.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3251.         console.log("[Begin]");
  3252.  
  3253.         const mclp = cProto;
  3254.         try {
  3255.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3256.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3257.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3258.           assertor(() => typeof mclp.setAtBottom === 'function');
  3259.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3260.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3261.         } catch (e) { }
  3262.  
  3263.  
  3264.         try {
  3265.           assertor(() => typeof mclp.attached === 'function');
  3266.           assertor(() => typeof mclp.detached === 'function');
  3267.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3268.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3269.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3270.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3271.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3272.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3273.         } catch (e) { }
  3274.  
  3275.         mclp.__intermediate_delay__ = null;
  3276.  
  3277.         let mzk = 0;
  3278.         let myk = 0;
  3279.         let mlf = 0;
  3280.         let myw = 0;
  3281.         let mzt = 0;
  3282.         let zarr = null;
  3283.         let mlg = 0;
  3284.  
  3285.         if ((mclp.clearList || 0).length === 0) {
  3286.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3287.           mclp.clearList66 = mclp.clearList;
  3288.           mclp.clearList = function () {
  3289.             mzk++;
  3290.             myk++;
  3291.             mlf++;
  3292.             myw++;
  3293.             mzt++;
  3294.             mlg++;
  3295.             zarr = null;
  3296.             this.__intermediate_delay__ = null;
  3297.             this.clearList66();
  3298.           };
  3299.           console.log("clearList", "OK");
  3300.         } else {
  3301.           console.log("clearList", "NG");
  3302.         }
  3303.  
  3304.  
  3305.         let onListRendererAttachedDone = false;
  3306.  
  3307.         function setList(itemOffset, items) {
  3308.  
  3309.           const isFirstTime = onListRendererAttachedDone === false;
  3310.  
  3311.           if (isFirstTime) {
  3312.             onListRendererAttachedDone = true;
  3313.             Promise.resolve().then(watchUserCSS);
  3314.             addCssManaged();
  3315.             setupEvents();
  3316.           }
  3317.  
  3318.           setupStyle(itemOffset, items);
  3319.  
  3320.           setupMutObserver(items);
  3321.         }
  3322.  
  3323.         mclp.attached419 = async function () {
  3324.  
  3325.           if (!this.isAttached) return;
  3326.  
  3327.           let maxTrial = 16;
  3328.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3329.             if (--maxTrial < 0 || !this.isAttached) return;
  3330.             await new Promise(requestAnimationFrame);
  3331.           }
  3332.  
  3333.           if (this.isAttached !== true) return;
  3334.  
  3335.           if (!this.$) {
  3336.             console.warn("!this.$");
  3337.             return;
  3338.           }
  3339.           if (!this.$) return;
  3340.           /** @type {HTMLElement | null} */
  3341.           const itemScroller = this.$['item-scroller'];
  3342.           /** @type {HTMLElement | null} */
  3343.           const itemOffset = this.$['item-offset'];
  3344.           /** @type {HTMLElement | null} */
  3345.           const items = this.$['items'];
  3346.  
  3347.           if (!itemScroller || !itemOffset || !items) {
  3348.             console.warn("items.parentNode !== itemOffset");
  3349.             return;
  3350.           }
  3351.  
  3352.           if (nodeParent(items) !== itemOffset) {
  3353.  
  3354.             console.warn("items.parentNode !== itemOffset");
  3355.             return;
  3356.           }
  3357.  
  3358.  
  3359.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3360.  
  3361.             console.warn("id incorrect");
  3362.             return;
  3363.           }
  3364.  
  3365.           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')
  3366.  
  3367.           if (!isTargetItems) {
  3368.             console.warn("!isTargetItems");
  3369.             return;
  3370.           }
  3371.  
  3372.           setList(itemOffset, items);
  3373.  
  3374.         }
  3375.  
  3376.         mclp.attached331 = mclp.attached;
  3377.         mclp.attached = function () {
  3378.           this.attached419 && this.attached419();
  3379.           return this.attached331();
  3380.         }
  3381.  
  3382.         mclp.detached331 = mclp.detached;
  3383.  
  3384.         mclp.detached = function () {
  3385.           setupMutObserver();
  3386.           return this.detached331();
  3387.         }
  3388.  
  3389.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3390.         for (const t29 of t29s) {
  3391.           if ((t29.inst || t29).isAttached === true) {
  3392.             t29.attached419();
  3393.           }
  3394.         }
  3395.  
  3396.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3397.  
  3398.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3399.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3400.  
  3401.           /** @type {Map<number, any>} */
  3402.           const aMap = new Map();
  3403.           let count = 6150;
  3404.           mclp.async66 = mclp.async;
  3405.           mclp.async = function (e, f) {
  3406.             // ensure the previous operation is done
  3407.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3408.             const hasF = arguments.length === 2;
  3409.             const stack = new Error().stack;
  3410.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3411.             if (count > 1e9) count = 6159;
  3412.             const resId = ++count;
  3413.             aMap.set(resId, e);
  3414.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3415.               const rp = aMap.get(resId);
  3416.               if (typeof rp !== 'function') {
  3417.                 return;
  3418.               }
  3419.               let cancelCall = false;
  3420.               if (isFlushAsync) {
  3421.                 if (rk < 0) {
  3422.                   cancelCall = true;
  3423.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3424.                   cancelCall = true;
  3425.                 }
  3426.               }
  3427.               if (cancelCall) {
  3428.                 aMap.delete(resId);
  3429.               } else {
  3430.                 const asyncEn = function () {
  3431.                   aMap.delete(resId);
  3432.                   return rp.apply(this, arguments);
  3433.                 };
  3434.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3435.               }
  3436.             });
  3437.  
  3438.             return resId;
  3439.           }
  3440.  
  3441.           mclp.cancelAsync66 = mclp.cancelAsync;
  3442.           mclp.cancelAsync = function (resId) {
  3443.             if (resId <= 6150) {
  3444.               this.cancelAsync66(resId);
  3445.             } else if (aMap.has(resId)) {
  3446.               const rp = aMap.get(resId);
  3447.               aMap.delete(resId);
  3448.               if (typeof rp !== 'function') {
  3449.                 this.cancelAsync66(rp);
  3450.               }
  3451.             }
  3452.           }
  3453.  
  3454.           console.log("async", "OK");
  3455.         } else {
  3456.           console.log("async", "NG");
  3457.         }
  3458.  
  3459.  
  3460.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3461.  
  3462.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3463.           mclp.showNewItems66_ = mclp.showNewItems_;
  3464.  
  3465.           mclp.showNewItems77_ = async function () {
  3466.             if (myk > 1e9) myk = 9;
  3467.             let tid = ++myk;
  3468.  
  3469.             await new Promise(requestAnimationFrame);
  3470.  
  3471.             if (tid !== myk) {
  3472.               return;
  3473.             }
  3474.  
  3475.             const cnt = this;
  3476.  
  3477.             await Promise.resolve();
  3478.             cnt.showNewItems66_();
  3479.  
  3480.             await Promise.resolve();
  3481.  
  3482.           }
  3483.  
  3484.           mclp.showNewItems_ = function () {
  3485.  
  3486.             const cnt = this;
  3487.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3488.               cnt.showNewItems77_().then(() => {
  3489.                 resolve();
  3490.               });
  3491.             });
  3492.           }
  3493.  
  3494.           console.log("showNewItems_", "OK");
  3495.         } else {
  3496.           console.log("showNewItems_", "NG");
  3497.         }
  3498.  
  3499.  
  3500.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3501.  
  3502.           assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3503.  
  3504.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3505.  
  3506.           let contensWillChangeController = null;
  3507.  
  3508.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3509.  
  3510.           mclp.flushActiveItems78_ = async function (tid) {
  3511.             try {
  3512.               if (tid !== mlf) return;
  3513.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3514.               let logger = false;
  3515.               const cnt = this;
  3516.               let immd = cnt.__intermediate_delay__;
  3517.               await new Promise(requestAnimationFrame);
  3518.  
  3519.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3520.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3521.  
  3522.               mlf++;
  3523.               if (mlg > 1e9) mlg = 9;
  3524.               ++mlg;
  3525.  
  3526.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3527.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3528.               let changeMaxItemsToDisplay = false;
  3529.               const activeItemsLen = this.activeItems_.length;
  3530.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3531.                 logger = true;
  3532.  
  3533.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3534.  
  3535.                 logger && console.log('[Begin]')
  3536.  
  3537.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3538.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3539.                   console.log('reduce maxitems');
  3540.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3541.                     // as all the rendered chats are already "outdated"
  3542.                     // all old chats shall remove and reduced number of few chats will be rendered
  3543.                     // then restore to the original number
  3544.                     changeMaxItemsToDisplay = true;
  3545.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3546.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3547.                   }
  3548.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3549.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3550.  
  3551.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3552.                 } else {
  3553.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3554.  
  3555.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3556.                 }
  3557.               }
  3558.               // it is found that it will render all stacked chats after switching back from background
  3559.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3560.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3561.  
  3562.  
  3563.               const items = (cnt.$ || 0).items;
  3564.  
  3565.               if (USE_WILL_CHANGE_CONTROLLER) {
  3566.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3567.                   contensWillChangeController.release();
  3568.                   contensWillChangeController = null;
  3569.                 }
  3570.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3571.               }
  3572.               const wcController = contensWillChangeController;
  3573.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3574.               wcController && wcController.beforeOper();
  3575.               await Promise.resolve();
  3576.               const acItems = cnt.activeItems_;
  3577.               const len1 = acItems.length;
  3578.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3579.               let waitFor = [];
  3580.  
  3581.  
  3582.               /** @type {Set<string>} */
  3583.               const imageLinks = new Set();
  3584.  
  3585.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3586.                 for (const item of acItems) {
  3587.                   fixLiveChatItem(item, imageLinks);
  3588.                 }
  3589.               }
  3590.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3591.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3592.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3593.  
  3594.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3595.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3596.                 // preload performs the high priority fetching.
  3597.                 // prefetch delays the chat display if the video resoruce is demanding.
  3598.  
  3599.                 if (rel) {
  3600.  
  3601.                   imageLinks.forEach(imageLink => {
  3602.                     let d = false;
  3603.                     const isEmoji = imageLink.includes('/emoji/');
  3604.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3605.                     if (!pretechedSet.has(imageLink)) {
  3606.                       pretechedSet.add(imageLink);
  3607.                       d = true;
  3608.                     }
  3609.                     if (d) {
  3610.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3611.  
  3612.                     }
  3613.                   })
  3614.  
  3615.                 }
  3616.  
  3617.               }
  3618.  
  3619.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3620.               // console.log('ss1', Date.now())
  3621.               if (waitFor.length > 0) {
  3622.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3623.               }
  3624.               waitFor.length = 0;
  3625.               waitFor = null;
  3626.               // console.log('ss2', Date.now())
  3627.               cnt.flushActiveItems66_();
  3628.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3629.               const len2 = cnt.activeItems_.length;
  3630.               const bAsync = len1 !== len2;
  3631.               await Promise.resolve();
  3632.               if (wcController) {
  3633.                 if (bAsync) {
  3634.                   cnt.async(() => {
  3635.                     wcController.afterOper();
  3636.                   });
  3637.                 } else {
  3638.                   wcController.afterOper();
  3639.                 }
  3640.               }
  3641.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3642.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3643.  
  3644.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3645.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3646.               } else if (changeMaxItemsToDisplay) {
  3647.  
  3648.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3649.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  3650.                   reducedMaxItemsToDisplay,
  3651.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  3652.                 });
  3653.               }
  3654.               logger && console.log('[End]')
  3655.  
  3656.               logger && console.groupEnd();
  3657.  
  3658.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3659.  
  3660.  
  3661.                 const ff = () => {
  3662.  
  3663.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3664.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3665.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3666.                     cnt.scrollToBottom_();
  3667.  
  3668.                     Promise.resolve().then(() => {
  3669.  
  3670.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3671.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3672.                     });
  3673.  
  3674.  
  3675.                   }
  3676.                 }
  3677.  
  3678.                 ff();
  3679.  
  3680.  
  3681.                 Promise.resolve().then(ff);
  3682.  
  3683.                 // requestAnimationFrame(ff);
  3684.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  3685.  
  3686.                 const knt = cnt;
  3687.                 if (!scrollChatFn) {
  3688.                   const cnt = knt;
  3689.                   const f = () => {
  3690.                     const itemScroller = cnt.itemScroller;
  3691.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  3692.                     if (!cnt.atBottom) {
  3693.                       cnt.scrollToBottom_();
  3694.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  3695.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  3696.                     }
  3697.                   };
  3698.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  3699.                 }
  3700.  
  3701.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  3702.               }
  3703.  
  3704.               return 1;
  3705.  
  3706.  
  3707.             } catch (e) {
  3708.               console.warn(e);
  3709.             }
  3710.           }
  3711.  
  3712.           mclp.flushActiveItems77_ = function () {
  3713.  
  3714.             return new Promise(resResolve => {
  3715.               try {
  3716.                 const cnt = this;
  3717.                 if (mlf > 1e9) mlf = 9;
  3718.                 let tid = ++mlf;
  3719.                 const hostElement = cnt.hostElement || cnt;
  3720.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  3721.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  3722.  
  3723.                 // 4 times to maxItems to avoid frequent trimming.
  3724.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  3725.  
  3726.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3727.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  3728.                 if (cnt.canScrollToBottom_()) {
  3729.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  3730.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  3731.                     .then((asyncResult) => {
  3732.                       resResolve(asyncResult); // either undefined or 1
  3733.                       resResolve = null;
  3734.                     }).catch((e) => {
  3735.                       console.warn(e);
  3736.                       if (resResolve) resResolve();
  3737.                     });
  3738.                 } else {
  3739.                   resResolve(2);
  3740.                   resResolve = null;
  3741.                 }
  3742.               } catch (e) {
  3743.                 console.warn(e);
  3744.                 if (resResolve) resResolve();
  3745.               }
  3746.  
  3747.  
  3748.             });
  3749.  
  3750.           }
  3751.  
  3752.           mclp.flushActiveItems_ = function () {
  3753.             const cnt = this;
  3754.  
  3755.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  3756.  
  3757.             if (cnt.activeItems_.length === 0) {
  3758.               cnt.__intermediate_delay__ = null;
  3759.               return;
  3760.             }
  3761.  
  3762.             const cntData = ((cnt || 0).data || 0);
  3763.             if (cntData.maxItemsToDisplay944 === undefined) {
  3764.               cntData.maxItemsToDisplay944 = null;
  3765.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  3766.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  3767.             }
  3768.  
  3769.             // ignore previous __intermediate_delay__ and create a new one
  3770.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3771.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  3772.                 if (rt === 1) {
  3773.                   resolve(1); // success, scroll to bottom
  3774.                   if (hasMoreMessageState === 1) {
  3775.                     hasMoreMessageState = 0;
  3776.                     const showMore = (cnt.$ || 0)['show-more'];
  3777.                     if (showMore) {
  3778.                       showMore.classList.remove('has-new-messages-miuzp');
  3779.                     }
  3780.                   }
  3781.                 }
  3782.                 else if (rt === 2) {
  3783.                   resolve(2); // success, trim
  3784.                   if (hasMoreMessageState === 0) {
  3785.                     hasMoreMessageState = 1;
  3786.                     const showMore = cnt.$['show-more'];
  3787.                     if (showMore) {
  3788.                       showMore.classList.add('has-new-messages-miuzp');
  3789.                     }
  3790.                   }
  3791.                 }
  3792.                 else resolve(-1); // skip
  3793.               }).catch(e => {
  3794.                 console.warn(e);
  3795.               });
  3796.             });
  3797.  
  3798.           }
  3799.           console.log("flushActiveItems_", "OK");
  3800.         } else {
  3801.           console.log("flushActiveItems_", "NG");
  3802.         }
  3803.  
  3804.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  3805.           try {
  3806.             if (mlg > 1e9) mlg = 9;
  3807.             const tid = ++mlg;
  3808.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  3809.             const runCond = () => this.canScrollToBottom_();
  3810.             if (!keepTrialCond()) return;
  3811.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  3812.             await new Promise(r => setTimeout(r, 80));
  3813.             if (!keepTrialCond()) return;
  3814.             if (runCond()) return this.flushActiveItems_() | 1;
  3815.             await new Promise(requestAnimationFrame);
  3816.             if (runCond()) return this.flushActiveItems_() | 1;
  3817.           } catch (e) {
  3818.             console.warn(e);
  3819.           }
  3820.         }
  3821.  
  3822.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  3823.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  3824.           assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  3825.  
  3826.           const querySelector = HTMLElement.prototype.querySelector;
  3827.           const U = (element) => ({
  3828.             querySelector: (selector) => querySelector.call(element, selector)
  3829.           });
  3830.  
  3831.           let qid = 0;
  3832.           mclp.atBottomChanged_ = function (a) {
  3833.             let tid = ++qid;
  3834.             let b = this;
  3835.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  3836.               if (tid !== qid) return;
  3837.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  3838.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  3839.               this.hideShowMoreAsync_ = null,
  3840.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  3841.           }
  3842.  
  3843.           console.log("atBottomChanged_", "OK");
  3844.         } else {
  3845.           console.log("atBottomChanged_", "NG");
  3846.         }
  3847.  
  3848.         if ((mclp.onScrollItems_ || 0).length === 1) {
  3849.  
  3850.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  3851.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  3852.           mclp.onScrollItems77_ = async function (evt) {
  3853.             if (myw > 1e9) myw = 9;
  3854.             let tid = ++myw;
  3855.  
  3856.             await new Promise(requestAnimationFrame);
  3857.  
  3858.             if (tid !== myw) {
  3859.               return;
  3860.             }
  3861.  
  3862.             const cnt = this;
  3863.  
  3864.             await Promise.resolve();
  3865.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  3866.               await Promise.resolve().then(() => {
  3867.                 this.ytRendererBehavior.onScroll(evt);
  3868.               }).then(() => {
  3869.                 if (this.canScrollToBottom_()) {
  3870.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  3871.                   if (hasUserJustInteracted) {
  3872.                     // only when there is an user action
  3873.                     this.setAtBottom();
  3874.                     return 1;
  3875.                   }
  3876.                 } else {
  3877.                   // no message inserting
  3878.                   this.setAtBottom();
  3879.                   return 1;
  3880.                 }
  3881.               }).then((r) => {
  3882.  
  3883.                 if (this.activeItems_.length) {
  3884.  
  3885.                   if (this.canScrollToBottom_()) {
  3886.                     this.flushActiveItems_();
  3887.                     return 1 && r;
  3888.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  3889.                     // delayed due to user action
  3890.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  3891.                     return 0;
  3892.                   }
  3893.                 }
  3894.               }).then((r) => {
  3895.                 if (r) {
  3896.                   // ensure setAtBottom is correctly set
  3897.                   this.setAtBottom();
  3898.                 }
  3899.               });
  3900.             } else {
  3901.               cnt.onScrollItems66_(evt);
  3902.             }
  3903.  
  3904.             await Promise.resolve();
  3905.  
  3906.           }
  3907.  
  3908.           mclp.onScrollItems_ = function (evt) {
  3909.  
  3910.             const cnt = this;
  3911.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3912.               cnt.onScrollItems77_(evt).then(() => {
  3913.                 resolve();
  3914.               });
  3915.             });
  3916.           }
  3917.           console.log("onScrollItems_", "OK");
  3918.         } else {
  3919.           console.log("onScrollItems_", "NG");
  3920.         }
  3921.  
  3922.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  3923.  
  3924.           assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  3925.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  3926.  
  3927.           mclp.handleLiveChatActions77_ = async function (arr) {
  3928.             if (typeof (arr || 0).length !== 'number') {
  3929.               this.handleLiveChatActions66_(arr);
  3930.               return;
  3931.             }
  3932.             if (mzt > 1e9) mzt = 9;
  3933.             let tid = ++mzt;
  3934.  
  3935.             if (zarr === null) zarr = arr;
  3936.             else Array.prototype.push.apply(zarr, arr);
  3937.             arr = null;
  3938.  
  3939.             await new Promise(requestAnimationFrame);
  3940.  
  3941.             if (tid !== mzt || zarr === null) {
  3942.               return;
  3943.             }
  3944.  
  3945.             const carr = zarr;
  3946.             zarr = null;
  3947.  
  3948.             await Promise.resolve();
  3949.             this.handleLiveChatActions66_(carr);
  3950.             await Promise.resolve();
  3951.  
  3952.           }
  3953.  
  3954.           mclp.handleLiveChatActions_ = function (arr) {
  3955.  
  3956.             const cnt = this;
  3957.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3958.               cnt.handleLiveChatActions77_(arr).then(() => {
  3959.                 resolve();
  3960.               });
  3961.             });
  3962.           }
  3963.           console.log("handleLiveChatActions_", "OK");
  3964.         } else {
  3965.           console.log("handleLiveChatActions_", "NG");
  3966.         }
  3967.  
  3968.         mclp.hasUserJustInteracted11_ = () => {
  3969.           const t = dateNow();
  3970.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  3971.         }
  3972.  
  3973.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  3974.  
  3975.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  3976.  
  3977.           mclp.canScrollToBottom_ = function () {
  3978.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  3979.           }
  3980.  
  3981.           console.log("canScrollToBottom_", "OK");
  3982.         } else {
  3983.           console.log("canScrollToBottom_", "NG");
  3984.         }
  3985.  
  3986.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  3987.  
  3988.           mclp.isSmoothScrollEnabled_ = function () {
  3989.             return false;
  3990.           }
  3991.  
  3992.           mclp.maybeResizeScrollContainer_ = function () {
  3993.             //
  3994.           }
  3995.  
  3996.           mclp.refreshOffsetContainerHeight_ = function () {
  3997.             //
  3998.           }
  3999.  
  4000.           mclp.smoothScroll_ = function () {
  4001.             //
  4002.           }
  4003.  
  4004.           mclp.resetSmoothScroll_ = function () {
  4005.             //
  4006.           }
  4007.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  4008.         } else {
  4009.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  4010.         }
  4011.  
  4012.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4013.  
  4014.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  4015.           mclp.handleAddChatItemAction_ = function (a) {
  4016.             try {
  4017.               if (a && typeof a === 'object' && !('length' in a)) {
  4018.                 fixLiveChatItem(a.item, null);
  4019.                 console.assert(arguments[0] === a);
  4020.               }
  4021.             } catch (e) { console.warn(e) }
  4022.             return this.handleAddChatItemAction66_.apply(this, arguments);
  4023.           }
  4024.  
  4025.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4026.         } else {
  4027.  
  4028.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4029.         }
  4030.  
  4031.  
  4032.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4033.  
  4034.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  4035.           mclp.handleReplaceChatItemAction_ = function (a) {
  4036.             try {
  4037.               if (a && typeof a === 'object' && !('length' in a)) {
  4038.                 fixLiveChatItem(a.replacementItem, null);
  4039.                 console.assert(arguments[0] === a);
  4040.               }
  4041.             } catch (e) { console.warn(e) }
  4042.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  4043.           }
  4044.  
  4045.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4046.         } else {
  4047.  
  4048.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4049.         }
  4050.  
  4051.         console.log("[End]");
  4052.         console.groupEnd();
  4053.  
  4054.       }).catch(console.warn);
  4055.  
  4056.  
  4057.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  4058.  
  4059.         let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  4060.  
  4061.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  4062.  
  4063.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  4064.           let v = `${attrValue}`;
  4065.           // conside a ticker is 101px width
  4066.           // 1% = 1.01px
  4067.           // 0.2% = 0.202px
  4068.  
  4069.  
  4070.           const ratio1 = (yd.ratio * 100);
  4071.           if (ratio1 > -1) { // avoid NaN
  4072.  
  4073.             // countdownDurationMs
  4074.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  4075.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  4076.             // 150000 - 1%    <1% = 1.5s>
  4077.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  4078.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  4079.  
  4080.             // 99px * 5% = 4.95px
  4081.  
  4082.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  4083.  
  4084.  
  4085.             // 1% Duration
  4086.  
  4087.             let ratio2 = ratio1;
  4088.  
  4089.             const ydd = yd.data;
  4090.             if (ydd) {
  4091.  
  4092.               const d1 = ydd.durationSec;
  4093.               const d2 = ydd.fullDurationSec;
  4094.  
  4095.               // @ step timing [min. 0.2%]
  4096.               let numOfSteps = 500;
  4097.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  4098.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  4099.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  4100.                 else if (d2 > 100) numOfSteps = 100; // 1%
  4101.                 else if (d2 > 50) numOfSteps = 50; // 2%
  4102.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  4103.                 else numOfSteps = 20;
  4104.               }
  4105.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4106.               if (numOfSteps < 5) numOfSteps = 5;
  4107.  
  4108.               const rd = numOfSteps / 100.0;
  4109.  
  4110.               ratio2 = Math.round(ratio2 * rd) / rd;
  4111.  
  4112.               // ratio2 = Math.round(ratio2 * 5) / 5;
  4113.               ratio2 = ratio2.toFixed(1);
  4114.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  4115.  
  4116.               if (yd.__style_last__ === v) return;
  4117.               yd.__style_last__ = v;
  4118.               // do not consider any delay here.
  4119.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  4120.  
  4121.             }
  4122.           }
  4123.  
  4124.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  4125.  
  4126.  
  4127.         } else {
  4128.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  4129.         }
  4130.  
  4131.       };
  4132.  
  4133.  
  4134.       const fpTicker = (renderer) => {
  4135.         const cnt = renderer.inst || renderer;
  4136.         assertor(() => typeof (cnt || 0).is === 'string');
  4137.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  4138.         const container = (cnt.$ || 0).container;
  4139.         if (container) {
  4140.           assertor(() => (container || 0).nodeType === 1);
  4141.           assertor(() => typeof container.setAttribute === 'function');
  4142.           container.setAttribute = tickerContainerSetAttribute;
  4143.         } else {
  4144.           console.warn(`"container" does not exist in ${cnt.is}`);
  4145.         }
  4146.       };
  4147.  
  4148.  
  4149.       const tags = [
  4150.         "yt-live-chat-ticker-paid-message-item-renderer",
  4151.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  4152.         "yt-live-chat-ticker-renderer",
  4153.         "yt-live-chat-ticker-sponsor-item-renderer"
  4154.       ];
  4155.  
  4156.  
  4157.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  4158.  
  4159.         mightFirstCheckOnYtInit();
  4160.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  4161.         console.log("[Begin]");
  4162.  
  4163.         let dummyValueForStyleReturn = null;
  4164.  
  4165.         const genDummyValueForStyleReturn = () => {
  4166.           let s = `--nx:82;`
  4167.           let ro = {
  4168.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4169.             "implementsGoogStringTypedString": true
  4170.           };
  4171.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4172.           return ro;
  4173.         }
  4174.  
  4175.         const isCSSPropertySupported = () => {
  4176.  
  4177.           // @property --ticker-rtime
  4178.  
  4179.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return;
  4180.           const documentElement = document.documentElement;
  4181.           if (!documentElement) {
  4182.             console.warn('document.documentElement is not found');
  4183.             return false;
  4184.           }
  4185.           if (`${getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  4186.             return false;
  4187.           }
  4188.           return true;
  4189.  
  4190.         };
  4191.  
  4192.  
  4193.         let windowShownAt = -1;
  4194.         const setupEventForWindowShownAt = () => {
  4195.           window.addEventListener('visibilitychange', () => {
  4196.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  4197.             else windowShownAt = 0;
  4198.           }, false);
  4199.         }
  4200.  
  4201.         const dProto = {
  4202.  
  4203.           attachedForTickerInit: function () {
  4204.  
  4205.             fpTicker(this.hostElement || this);
  4206.             return this.attached77();
  4207.  
  4208.           },
  4209.  
  4210.  
  4211.           // doAnimator
  4212.  
  4213.           _makeAnimator: function () {
  4214.             if (this._r782) return;
  4215.             // if (!this.isAttached) return;
  4216.             if (!this._runnerAE) {
  4217.               /** @type {HTMLElement | null} */
  4218.               const aElement = (this.$ || 0).container;
  4219.               if (!aElement) return console.warn("this.$.container is undefined");
  4220.               const da = this.data;
  4221.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  4222.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  4223.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  4224.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  4225.  
  4226.               // if (!this.__tickerBackgroundInitialChecked__) {
  4227.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  4228.               //   console.log('__tickerBackgroundInitialChecked__')
  4229.               //   this._checkTickerBackgroundChanged();
  4230.               // }
  4231.  
  4232.               aElement.style.setProperty('--ticker-c1', c1);
  4233.               aElement.style.setProperty('--ticker-c2', c2);
  4234.               aElement.classList.add(runTickerClassName);
  4235.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4236.               // this._aeStartV = this.countdownMs;
  4237.               // this._aeStartT = this.countdownDurationMs;
  4238.               if (!(p >= 0 && p <= 100)) {
  4239.                 console.warn('incorrect time ratio', p);
  4240.               } else {
  4241.                 /*
  4242.                 const u0 = p.toFixed(4) + '%';
  4243.                 this._runnerAE = animate.call(aElement,
  4244.                   [
  4245.                     { '--ticker-rtime': u0 },
  4246.                     { '--ticker-rtime': '0%' }
  4247.                   ]
  4248.                   ,
  4249.                   {
  4250.                     fill: "forwards",
  4251.                     duration: this.countdownMs,
  4252.                     easing: "linear"
  4253.                   }
  4254.                 );
  4255.                 */
  4256.  
  4257.                 let timingFn = 'linear';
  4258.  
  4259.                 const totalDuration = this.countdownDurationMs;
  4260.  
  4261.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4262.  
  4263.                   // @ step timing [min. 0.2%]
  4264.                   let stepInterval = 0.2; // unit: %
  4265.                   if (totalDuration > 400000) stepInterval = 0.2;
  4266.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4267.                   else if (totalDuration > 100000) stepInterval = 1;
  4268.                   else if (totalDuration > 50000) stepInterval = 2;
  4269.                   else if (totalDuration > 25000) stepInterval = 5;
  4270.                   else stepInterval = 5;
  4271.  
  4272.                   let numOfSteps = Math.round(100 / stepInterval);
  4273.  
  4274.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4275.                   if (numOfSteps < 5) numOfSteps = 5;
  4276.  
  4277.                   timingFn = `steps(${numOfSteps}, end)`;
  4278.  
  4279.                 }
  4280.  
  4281.  
  4282.                 /** @type {Animation} */
  4283.                 const ae = animate.call(aElement,
  4284.                   [
  4285.                     { '--ticker-rtime': '100%' },
  4286.                     { '--ticker-rtime': '0%' }
  4287.                   ]
  4288.                   ,
  4289.                   {
  4290.                     fill: "forwards",
  4291.                     duration: totalDuration,
  4292.                     easing: timingFn
  4293.                   }
  4294.                 );
  4295.  
  4296.                 this._runnerAE = ae;
  4297.  
  4298.                 ae.onfinish = (event) => {
  4299.                   this.onfinish = null;
  4300.                   if (this._runnerAE !== ae) return;
  4301.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4302.                     this._aeFinished(event);
  4303.                   }
  4304.                 }
  4305.  
  4306.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4307.  
  4308.                 if (bq >= 0 && bq <= totalDuration) {
  4309.  
  4310.                   if (bq > totalDuration - 1) {
  4311.                     ae.currentTime = bq;
  4312.                     // setTimeout(() => {
  4313.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4314.                     // }, 1);
  4315.                   } else {
  4316.                     ae.currentTime = bq;
  4317.                   }
  4318.                 } else {
  4319.                   console.warn('Error on setting _runnerAE.currentTime!');
  4320.                 }
  4321.  
  4322.  
  4323.                 aeConstructor = ae.constructor; // constructor is from iframe
  4324.                 return ae;
  4325.               }
  4326.             } else {
  4327.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4328.               // assume just time update
  4329.               const ae = this._runnerAE;
  4330.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4331.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4332.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4333.               if (!(p >= 0 && p <= 100)) {
  4334.                 console.warn('incorrect time ratio', p);
  4335.               } else {
  4336.                 // let u0 = p.toFixed(4) + '%'
  4337.                 /*
  4338.                 ae.effect.setKeyframes([
  4339.                   { '--ticker-rtime': u0 },
  4340.                   { '--ticker-rtime': '0%' }
  4341.                 ]);
  4342.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4343.                 */
  4344.                 // ae.currentTime = 0;
  4345.  
  4346.  
  4347.  
  4348.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4349.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4350.  
  4351.                   this._runnerAE.currentTime = bq
  4352.                 } else {
  4353.                   console.warn('Error on setting _runnerAE.currentTime!');
  4354.                 }
  4355.  
  4356.  
  4357.                 ae.play();
  4358.                 return ae;
  4359.               }
  4360.             }
  4361.           },
  4362.  
  4363.           _aeFinished: function (event) {
  4364.  
  4365.             if (this._r782) return;
  4366.  
  4367.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4368.               this._throwOut();
  4369.               return;
  4370.             }
  4371.  
  4372.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4373.  
  4374.             let lc = window.performance.now();
  4375.             this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4376.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4377.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4378.             if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4379.  
  4380.             this.countdownMs = 0;
  4381.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  4382.  
  4383.             if (this.isAttached) {
  4384.               let fastRemoved = false;
  4385.               if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4386.                 // no animation if the video page is switched from background to foreground
  4387.                 // this.hostElement.style.display = 'none';
  4388.                 const id = (this.data || 0).id || 0;
  4389.                 if (!id) this.data = { id: 1 }
  4390.                 try {
  4391.                   this.requestRemoval();
  4392.                   fastRemoved = true;
  4393.                 } catch (e) {
  4394.  
  4395.                 }
  4396.               }
  4397.  
  4398.               if (!fastRemoved) {
  4399.                 "auto" === this.hostElement.style.width && this.setContainerWidth();
  4400.                 this.slideDown();
  4401.               }
  4402.             }
  4403.  
  4404.  
  4405.  
  4406.           },
  4407.  
  4408.  
  4409.           /** @type {()} */
  4410.           _throwOut: function () {
  4411.             this._r782 = 1;
  4412.             Promise.resolve().then(() => {
  4413.               if (typeof this.requestRemoval === 'function') {
  4414.                 const id = (this.data || 0).id;
  4415.                 if (!id) this.data = { id: 1 };
  4416.                 try {
  4417.                   this.requestRemoval();
  4418.                 } catch (e) { }
  4419.               }
  4420.               this.detached();
  4421.               this.data = null;
  4422.               this.countdownMs = 0;
  4423.               this.lastCountdownTimeMs = null;
  4424.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  4425.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  4426.               if (this.__dataReady === true) this.__dataReady = false;
  4427.               const hm = this.hostElement || this;
  4428.               if (hm.parentNode) hm.remove();
  4429.               if (hm.firstChild) hm.textContent = '';
  4430.             }).catch(e => {
  4431.               console.warn(e);
  4432.             });
  4433.           },
  4434.  
  4435.  
  4436.           // doTimerFnModification
  4437.  
  4438.  
  4439.           /** @type {(a, b)} */
  4440.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4441.             try {
  4442.               // a.durationSec [s] => countdownMs [ms]
  4443.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4444.               // lastCountdownTimeMs => raf ongoing
  4445.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4446.  
  4447.               if (this._r782) return;
  4448.  
  4449.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4450.                 this._throwOut();
  4451.                 return;
  4452.               }
  4453.  
  4454.               // TimerFnModA
  4455.  
  4456.               b = void 0 === b ? 0 : b;
  4457.               if (void 0 !== a) {
  4458.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4459.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4460.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4461.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  4462.                   this.rafId = 1
  4463.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4464.                   this.detlaSincePausedSecs = 0;
  4465.                   const ae = this._makeAnimator();
  4466.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4467.  
  4468.  
  4469.                   if (isPlayProgressTriggered && this.isAnimationPaused !== true && this.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__) {
  4470.  
  4471.  
  4472.  
  4473.  
  4474.                     this.playerProgressSec = lastPlayerProgress > 0 ? lastPlayerProgress : 0; // save the progress first
  4475.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4476.                     this.detlaSincePausedSecs = 0;
  4477.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4478.  
  4479.                     relayPromise = relayPromise || new PromiseExternal();
  4480.  
  4481.                     relayPromise.then(() => {
  4482.                       if (this.isAttached === true && this.countdownDurationMs > 0 && this.isAnimationPaused === true && this.isReplayPaused !== true) {
  4483.                         this.isAnimationPaused = false;
  4484.                       }
  4485.                     });
  4486.  
  4487.  
  4488.                   }
  4489.  
  4490.  
  4491.  
  4492.                 }
  4493.               }
  4494.  
  4495.             } catch (e) {
  4496.               console.warn(e);
  4497.             }
  4498.  
  4499.           },
  4500.  
  4501.  
  4502.  
  4503.           /** @type {(a, b)} */
  4504.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4505.             try {
  4506.               // a.durationSec [s] => countdownMs [ms]
  4507.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4508.               // lastCountdownTimeMs => raf ongoing
  4509.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4510.  
  4511.               if (this._r782) return;
  4512.  
  4513.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4514.                 this._throwOut();
  4515.                 return;
  4516.               }
  4517.  
  4518.               // TimerFnModT
  4519.  
  4520.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4521.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4522.               b = void 0 === b ? 0 : b;
  4523.               void 0 !== a && (this.countdownMs = 1E3 * a,
  4524.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4525.                 this.ratio = 1,
  4526.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  4527.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4528.  
  4529.             } catch (e) {
  4530.               console.warn(e);
  4531.             }
  4532.  
  4533.           },
  4534.  
  4535.  
  4536.           /** @type {(a,)} */
  4537.           updateTimeoutForTimerFnModA: function (a) {
  4538.  
  4539.             try {
  4540.  
  4541.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4542.  
  4543.               if (this._r782) return;
  4544.  
  4545.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4546.                 this._throwOut();
  4547.                 return;
  4548.               }
  4549.  
  4550.               // TimerFnModA
  4551.  
  4552.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4553.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4554.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4555.               }
  4556.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4557.               if (this.isAttached && this.countdownMs) {
  4558.                 this.lastCountdownTimeMs = a
  4559.                 const ae = this._makeAnimator(); // request raf
  4560.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4561.               } else {
  4562.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4563.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4564.                     this.slideDown()));
  4565.               }
  4566.  
  4567.             } catch (e) {
  4568.               console.warn(e);
  4569.             }
  4570.  
  4571.  
  4572.           },
  4573.  
  4574.           /** @type {(a,)} */
  4575.           updateTimeoutForTimerFnModT: function (a) {
  4576.  
  4577.             try {
  4578.  
  4579.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4580.  
  4581.               if (this._r782) return;
  4582.  
  4583.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4584.                 this._throwOut();
  4585.                 return;
  4586.               }
  4587.  
  4588.               // TimerFnModT
  4589.  
  4590.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4591.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4592.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4593.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4594.               }
  4595.               this.ratio = this.countdownMs / this.countdownDurationMs;
  4596.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4597.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4598.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4599.                     this.slideDown()))
  4600.  
  4601.  
  4602.             } catch (e) {
  4603.               console.warn(e);
  4604.             }
  4605.           },
  4606.  
  4607.           /** @type {(a,b)} */
  4608.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  4609.  
  4610.             if (this._r782) return;
  4611.  
  4612.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4613.               this._throwOut();
  4614.               return;
  4615.             }
  4616.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4617.             this._forceNoDetlaSincePausedSecs783 = 0;
  4618.  
  4619.             Promise.resolve().then(() => {
  4620.  
  4621.               if (a) {
  4622.  
  4623.                 if (this._runnerAE && this._runnerAE.playState === 'running') {
  4624.  
  4625.                   this._runnerAE.pause()
  4626.                   let lc = window.performance.now();
  4627.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4628.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4629.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4630.                 }
  4631.  
  4632.               } else if (!a && b) {
  4633.  
  4634.  
  4635.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4636.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4637.                 this.detlaSincePausedSecs = 0;
  4638.                 this.updateTimeout(a);
  4639.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  4640.  
  4641.               }
  4642.  
  4643.  
  4644.             }).catch(e => {
  4645.               console.log(e);
  4646.             });
  4647.  
  4648.  
  4649.  
  4650.           },
  4651.  
  4652.  
  4653.           /** @type {(a,b)} */
  4654.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  4655.  
  4656.             if (this._r782) return;
  4657.  
  4658.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4659.               this._throwOut();
  4660.               return;
  4661.             }
  4662.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4663.             this._forceNoDetlaSincePausedSecs783 = 0;
  4664.  
  4665.             Promise.resolve().then(() => {
  4666.  
  4667.               // TimerFnModT
  4668.  
  4669.               // ez++;
  4670.               // if(ez> 1e9) ez=9;
  4671.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4672.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4673.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4674.                   this.detlaSincePausedSecs = 0),
  4675.                 this.boundUpdateTimeout37_(a),
  4676.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  4677.  
  4678.  
  4679.             }).catch(e => {
  4680.               console.log(e);
  4681.             });
  4682.  
  4683.  
  4684.  
  4685.           },
  4686.  
  4687.  
  4688.           /** @type {(a,b)} */
  4689.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  4690.  
  4691.             if (this._r782) return;
  4692.  
  4693.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4694.               this._throwOut();
  4695.               return;
  4696.             }
  4697.  
  4698.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  4699.  
  4700.           },
  4701.  
  4702.  
  4703.  
  4704.           /** @type {()} */
  4705.           handlePauseReplayForPlaybackProgressState: function () {
  4706.             if (!playerEventsByIframeRelay) return this.handlePauseReplay66.apply(this, arguments);
  4707.  
  4708.             if (onPlayStateChangePromise) {
  4709.  
  4710.               if (this.rtu > 1e9) this.rtu = this.rtu % 1e4;
  4711.               const tid = ++this.rtu;
  4712.  
  4713.               onPlayStateChangePromise.then(() => {
  4714.                 if (tid === this.rtu && !onPlayStateChangePromise) this.handlePauseReplay.apply(this, arguments);
  4715.               });
  4716.  
  4717.               return;
  4718.             }
  4719.  
  4720.             if (playerState !== 2) return;
  4721.             if (this.isAttached) {
  4722.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  4723.               const tid = ++this.rtk;
  4724.               const tc = relayCount;
  4725.               foregroundPromiseFn().then(() => {
  4726.                 if (tid === this.rtk && tc === relayCount && playerState === 2 && _playerState === playerState) {
  4727.                   this.handlePauseReplay66();
  4728.                 }
  4729.  
  4730.               })
  4731.             }
  4732.           },
  4733.  
  4734.           /** @type {()} */
  4735.           handleResumeReplayForPlaybackProgressState: function () {
  4736.             if (!playerEventsByIframeRelay) return this.handleResumeReplay66.apply(this, arguments);
  4737.  
  4738.  
  4739.             if (onPlayStateChangePromise) {
  4740.  
  4741.               if (this.rtv > 1e9) this.rtv = this.rtv % 1e4;
  4742.               const tid = ++this.rtv;
  4743.  
  4744.               onPlayStateChangePromise.then(() => {
  4745.                 if (tid === this.rtv && !onPlayStateChangePromise) this.handleResumeReplay.apply(this, arguments);
  4746.               });
  4747.  
  4748.               return;
  4749.             }
  4750.  
  4751.  
  4752.             if (playerState !== 1) return;
  4753.             if (this.isAttached) {
  4754.               const tc = relayCount;
  4755.  
  4756.               relayPromise = relayPromise || new PromiseExternal();
  4757.               relayPromise.then(() => {
  4758.                 if (relayCount > tc && playerState === 1 && _playerState === playerState) {
  4759.                   this.handleResumeReplay66();
  4760.                 }
  4761.               });
  4762.             }
  4763.           },
  4764.  
  4765.           /** @type {(a,)} */
  4766.           handleReplayProgressForPlaybackProgressState: function (a) {
  4767.             if (this.isAttached) {
  4768.               const tid = ++this.rtk;
  4769.               foregroundPromiseFn().then(() => {
  4770.                 if (tid === this.rtk) {
  4771.                   this.handleReplayProgress66(a);
  4772.                 }
  4773.               })
  4774.             }
  4775.           }
  4776.  
  4777.  
  4778.         }
  4779.  
  4780.  
  4781.         for (const tag of tags) { // ##tag##
  4782.           const dummy = document.createElement(tag);
  4783.  
  4784.           const cProto = getProto(dummy);
  4785.           if (!cProto || !cProto.attached) {
  4786.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4787.             continue;
  4788.           }
  4789.  
  4790.           cProto.attached77 = cProto.attached;
  4791.  
  4792.           cProto.attached = dProto.attachedForTickerInit;
  4793.  
  4794.           let rafHackState = 0;
  4795.  
  4796.           let isTimingFunctionHackable = false;
  4797.  
  4798.           let urt = 0;
  4799.  
  4800.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  4801.  
  4802.             // console.log('startCountdown', typeof cProto.startCountdown)
  4803.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  4804.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  4805.  
  4806.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  4807.  
  4808.           } else {
  4809.             console.log(`Skip Timing Function Modification for ${tag}`);
  4810.             continue;
  4811.           }
  4812.  
  4813.  
  4814.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  4815.  
  4816.             // cancelable - this.rafId < isAnimationPausedChanged >
  4817.             rafHackState = 1;
  4818.  
  4819.             if (isTimingFunctionHackable) {
  4820.               rafHackState = 2;
  4821.  
  4822.             } else {
  4823.               rafHackState = 4;
  4824.             }
  4825.  
  4826.           }
  4827.  
  4828.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  4829.  
  4830.           const doRAFHack = rafHackState === 2;
  4831.  
  4832.           cProto._throwOut = dProto._throwOut;
  4833.  
  4834.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  4835.  
  4836.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  4837.  
  4838.  
  4839.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  4840.  
  4841.  
  4842.  
  4843.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  4844.               urt++;
  4845.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  4846.             } else {
  4847.               console.log('Error for setting cProto.handlePauseReplay', tag)
  4848.             }
  4849.  
  4850.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  4851.               urt++;
  4852.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  4853.             } else {
  4854.               console.log('Error for setting cProto.handleResumeReplay', tag)
  4855.             }
  4856.  
  4857.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  4858.               urt++;
  4859.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  4860.             } else {
  4861.               console.log('Error for setting cProto.handleReplayProgress', tag)
  4862.             }
  4863.  
  4864.  
  4865.  
  4866.           }
  4867.  
  4868.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  4869.           cProto.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__ = ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED;
  4870.  
  4871.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  4872.  
  4873.             cProto.rtk = 0;
  4874.             cProto.rtu = 0;
  4875.             cProto.rtv = 0;
  4876.  
  4877.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  4878.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  4879.  
  4880.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  4881.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  4882.  
  4883.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  4884.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  4885.  
  4886.           }
  4887.  
  4888.           const doTimerFnModification = (doRAFHack || doAnimator);
  4889.  
  4890.           if (doAnimator && windowShownAt < 0) {
  4891.             windowShownAt = 0;
  4892.             setupEventForWindowShownAt();
  4893.           }
  4894.  
  4895.           if (doTimerFnModification) {
  4896.  
  4897.             cProto.startCountdown = (
  4898.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  4899.             );
  4900.  
  4901.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4902.             cProto.updateTimeout = (
  4903.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  4904.             );
  4905.  
  4906.  
  4907.             // let ez = 0;
  4908.             cProto.isAnimationPausedChanged = (
  4909.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  4910.             );
  4911.  
  4912.           }
  4913.  
  4914.           if (doAnimator) {
  4915.  
  4916.             assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  4917.  
  4918.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  4919.  
  4920.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  4921.  
  4922.           }
  4923.  
  4924.           if (doTimerFnModification === true) hasTimerModified = true;
  4925.  
  4926.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  4927.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  4928.           }
  4929.  
  4930.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  4931.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  4932.           }
  4933.  
  4934.         }
  4935.  
  4936.         const selector = tags.join(', ');
  4937.         const elements = document.querySelectorAll(selector);
  4938.         if (elements.length >= 1) {
  4939.           for (const elm of elements) {
  4940.             if ((elm || elm.inst).isAttached === true) {
  4941.               fpTicker(elm);
  4942.             }
  4943.           }
  4944.         }
  4945.  
  4946.         console.log("[End]");
  4947.         console.groupEnd();
  4948.  
  4949.  
  4950.       }).catch(console.warn);
  4951.  
  4952.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  4953.  
  4954.         mightFirstCheckOnYtInit();
  4955.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  4956.         console.log("[Begin]");
  4957.         (() => {
  4958.  
  4959.           /* pending!!
  4960.  
  4961.           handleLiveChatAction
  4962.  
  4963.           removeTickerItemById
  4964.  
  4965.           _itemsChanged
  4966.           itemsChanged
  4967.  
  4968.           handleMarkChatItemAsDeletedAction
  4969.           handleMarkChatItemsByAuthorAsDeletedAction
  4970.           handleRemoveChatItemByAuthorAction
  4971.  
  4972.  
  4973.           */
  4974.  
  4975.           const tag = "yt-live-chat-ticker-renderer"
  4976.           const dummy = document.createElement(tag);
  4977.  
  4978.           const cProto = getProto(dummy);
  4979.           if (!cProto || !cProto.attached) {
  4980.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4981.             return;
  4982.           }
  4983.  
  4984.           if (AMEND_TICKER_handleLiveChatAction
  4985.             && typeof cProto.handleLiveChatAction === 'function' && !cProto.handleLiveChatAction45 && fnIntegrity(cProto.handleLiveChatAction) === '1.63.48'
  4986.             && typeof cProto.handleLiveChatActions === 'function' && !cProto.handleLiveChatActions45 && fnIntegrity(cProto.handleLiveChatActions) === '1.23.12'
  4987.             && typeof cProto.unshift === 'function' && cProto.unshift.length === 1
  4988.             && typeof cProto.handleMarkChatItemAsDeletedAction === 'function' && cProto.handleMarkChatItemAsDeletedAction.length === 1
  4989.             && typeof cProto.removeTickerItemById === 'function' && cProto.removeTickerItemById.length === 1
  4990.             && typeof cProto.handleMarkChatItemsByAuthorAsDeletedAction === 'function' && cProto.handleMarkChatItemsByAuthorAsDeletedAction.length === 1
  4991.             && typeof cProto.handleRemoveChatItemByAuthorAction === 'function' && cProto.handleRemoveChatItemByAuthorAction.length === 1
  4992.           ) {
  4993.  
  4994.             cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  4995.  
  4996.             cProto.handleLiveChatActions = function (a) {
  4997.               /**
  4998.                * 
  4999.                   f.handleLiveChatActions = function(a) {
  5000.                       a.length && (a.forEach(this.handleLiveChatAction, this),
  5001.                       this.updateHighlightedItem(),
  5002.                       this.shouldAnimateIn = !0)
  5003.                   }
  5004.                * 
  5005.                */
  5006.  
  5007.               if (a.length) {
  5008.                 const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  5009.                 for (const action of a) {
  5010.                   action.__batchId45__ = batchToken;
  5011.                   this.handleLiveChatAction(action);
  5012.                 }
  5013.               }
  5014.             }
  5015.  
  5016.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  5017.  
  5018.  
  5019.  
  5020.             cProto._nszlv_ = 0;
  5021.             cProto._stackedLCAs_ = null;
  5022.             cProto._lastAddItem_ = null;
  5023.             cProto._lastAddItemInStack_ = false;
  5024.             cProto.handleLiveChatAction = function (a) {
  5025.  
  5026.               /**
  5027.                * 
  5028.                * 
  5029.                 f.handleLiveChatAction = function(a) {
  5030.                     var b = C(a, xO)
  5031.                       , c = C(a, yO)
  5032.                       , d = C(a, o1a)
  5033.                       , e = C(a, p1a);
  5034.                     a = C(a, A1a);
  5035.                     b ? this.unshift("items", b.item) : c ? this.handleMarkChatItemAsDeletedAction(c) : d ? this.removeTickerItemById(d.targetItemId) : e ? this.handleMarkChatItemsByAuthorAsDeletedAction(e) : a && this.handleRemoveChatItemByAuthorAction(a)
  5036.                 }
  5037.                * 
  5038.                */
  5039.  
  5040.               // return this.handleLiveChatAction45(a)
  5041.               const { addChatItemAction, addLiveChatTickerItemAction, markChatItemAsDeletedAction,
  5042.                 removeChatItemAction, markChatItemsByAuthorAsDeletedAction, removeChatItemByAuthorAction, __batchId45__ } = a
  5043.  
  5044.               if (addChatItemAction) return;
  5045.  
  5046.               // console.log(Object.keys(a));
  5047.  
  5048.               if (this._stackedLCAs_ === null) this._stackedLCAs_ = [];
  5049.               const stackArr = this._stackedLCAs_;
  5050.               let newStackEntry = null;
  5051.               if (addLiveChatTickerItemAction) {
  5052.                 let isDuplicated = false;
  5053.  
  5054.                 const newItem = addLiveChatTickerItemAction.item;
  5055.                 const tickerType = firstKey(newItem);
  5056.                 if (!tickerType) return;
  5057.                 const tickerItem = newItem[tickerType];
  5058.                 const tickerId = tickerItem.id;
  5059.                 if (!tickerId) return;
  5060.  
  5061.                 if (this._lastAddItem_ && this._lastAddItem_.id === tickerId) {
  5062.                   let prevTickerItem = null;
  5063.                   if (this._lastAddItemInStack_) {
  5064.                     const entry = stackArr[stackArr.length - 1]; // only consider the last entry
  5065.                     if (entry && entry.action === 'addItem') {
  5066.                       prevTickerItem = entry.data; // only consider the first item;
  5067.                     }
  5068.                   } else {
  5069.                     prevTickerItem = this.items[0]; // only consider the first item;
  5070.                   }
  5071.                   if (prevTickerItem && prevTickerItem[tickerType]) {
  5072.                     if (prevTickerItem[tickerType].id === tickerId) {
  5073.                       isDuplicated = true;
  5074.                     }
  5075.                   }
  5076.                 }
  5077.                 if (!isDuplicated) {
  5078.                   this._lastAddItem_ = tickerItem;
  5079.                   this._lastAddItemInStack_ = true;
  5080.  
  5081.                   newStackEntry = { action: 'addItem', data: newItem };
  5082.  
  5083.                 } else {
  5084.                   console.log('handleLiveChatAction Repeated Item', tickerItem.id, tickerItem); // happen in both live and playback. Reason Unknown.
  5085.                   return;
  5086.                 }
  5087.  
  5088.               } else {
  5089.                 markChatItemAsDeletedAction && (newStackEntry = { action: 'mcItemD', data: markChatItemAsDeletedAction });
  5090.                 removeChatItemAction && (newStackEntry = { action: 'removeItemById', data: removeChatItemAction.targetId });
  5091.                 markChatItemsByAuthorAsDeletedAction && (newStackEntry = { action: 'mcItemAD', data: markChatItemsByAuthorAsDeletedAction });
  5092.                 removeChatItemByAuthorAction && (newStackEntry = { action: 'removeItemA', data: removeChatItemByAuthorAction })
  5093.               }
  5094.  
  5095.  
  5096.               if (!newStackEntry) return;
  5097.               stackArr.push(newStackEntry);
  5098.  
  5099.  
  5100.               this._nszlv_++;
  5101.               if (this._nszlv_ > 1e9) this._nszlv_ = 9;
  5102.               const tid = this._nszlv_;
  5103.  
  5104.               newStackEntry.__batchId45__ = __batchId45__ || '';
  5105.               newStackEntry.dateTime = Date.now();
  5106.  
  5107.               foregroundPromiseFn().then(() => {
  5108.                 if (tid !== this._nszlv_) return;
  5109.                 const dateNow = Date.now(); // time difference to shift animation start time shall be considered. (pending)
  5110.                 const stackArr = this._stackedLCAs_.slice(0);
  5111.                 this._stackedLCAs_.length = 0;
  5112.                 this._lastAddItemInStack_ = false;
  5113.                 let lastDateTime = 0;
  5114.                 let prevBatchId = '';
  5115.                 const addItems = [];
  5116.                 const previousShouldAnimateIn = this.shouldAnimateIn;
  5117.                 for (const entry of stackArr) {
  5118.                   const { action, data, dateTime, __batchId45__ } = entry;
  5119.  
  5120.                   const finishLastAction = (
  5121.                     (prevBatchId !== __batchId45__ && prevBatchId)
  5122.                     || (dateNow - lastDateTime >= 1000 && dateNow - dateTime < 1000)
  5123.                   );
  5124.  
  5125.                   const addPrevItems = addItems.length >= 1 && (finishLastAction || action !== 'addItem');
  5126.                   lastDateTime = dateTime;
  5127.                   prevBatchId = __batchId45__;
  5128.  
  5129.                   if (dateNow - dateTime >= 1000 && this.shouldAnimateIn) this.shouldAnimateIn = false;
  5130.  
  5131.                   if (addPrevItems) {
  5132.                     let e = addItems.slice(0);
  5133.                     addItems.length = 0;
  5134.                     this.unshift("items", ...e);
  5135.                   }
  5136.                   if (finishLastAction) {
  5137.                     this.updateHighlightedItem();
  5138.                     if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5139.                   }
  5140.  
  5141.                   if (action === 'addItem') addItems.unshift(data);
  5142.                   else if (action === 'mcItemD') this.handleMarkChatItemAsDeletedAction(data);
  5143.                   else if (action === 'removeItemById') this.removeTickerItemById(data);
  5144.                   else if (action === 'mcItemAD') this.handleMarkChatItemsByAuthorAsDeletedAction(data);
  5145.                   else if (action === 'removeItemA') this.handleRemoveChatItemByAuthorAction(data);
  5146.  
  5147.                 }
  5148.                 if (previousShouldAnimateIn && !this.shouldAnimateIn) this.shouldAnimateIn = true;
  5149.                 if (addItems.length >= 1) {
  5150.                   let e = addItems.slice(0);
  5151.                   addItems.length = 0;
  5152.                   this.unshift("items", ...e);
  5153.                 }
  5154.                 if (prevBatchId || dateNow - lastDateTime >= 1000) {
  5155.                   this.updateHighlightedItem();
  5156.                   if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5157.                 }
  5158.               })
  5159.  
  5160.             }
  5161.  
  5162.             console.log("AMEND_TICKER_handleLiveChatAction - OK");
  5163.           } else {
  5164.             console.log("AMEND_TICKER_handleLiveChatAction - NG");
  5165.           }
  5166.  
  5167.           if (RAF_FIX_keepScrollClamped) {
  5168.  
  5169.             // to be improved
  5170.  
  5171.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  5172.  
  5173.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  5174.               cProto.keepScrollClamped = function () {
  5175.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  5176.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  5177.                 this.maybeClampScroll()
  5178.               }
  5179.  
  5180.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  5181.             } else {
  5182.  
  5183.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  5184.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  5185.             }
  5186.  
  5187.           }
  5188.  
  5189.  
  5190.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.44.32' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  5191.             // to be replaced by animator
  5192.  
  5193.             cProto.startScrolling = function (a) {
  5194.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  5195.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  5196.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  5197.               this.scrollRatePixelsPerSecond = a;
  5198.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5199.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  5200.             };
  5201.  
  5202.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  5203.  
  5204.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  5205.               const b = a - (this.lastFrameTimestamp || 0);
  5206.               const rate = this.scrollRatePixelsPerSecond
  5207.               const q = b / 1E3 * (rate || 0);
  5208.  
  5209.               const sl = this.$.items.scrollLeft;
  5210.               // console.log(rate, sl, q)
  5211.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  5212.  
  5213.               } else if (q > -1e-5 && q < 1e-5) {
  5214.  
  5215.               } else {
  5216.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  5217.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  5218.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  5219.                 if (cond1 || cond2 || cond3) {
  5220.                   this.$.items.scrollLeft += q;
  5221.                   this.maybeClampScroll();
  5222.                   this.updateArrows();
  5223.                 }
  5224.               }
  5225.  
  5226.               this.lastFrameTimestamp = a;
  5227.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5228.               0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5229.             } : function (a) {
  5230.               const b = a - (this.lastFrameTimestamp || 0);
  5231.               this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  5232.               this.maybeClampScroll();
  5233.               this.updateArrows();
  5234.               this.lastFrameTimestamp = a;
  5235.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5236.               0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5237.             };
  5238.  
  5239.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  5240.           } else {
  5241.             assertor(() => fnIntegrity(cProto.startScrolling, '1.44.32'));
  5242.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  5243.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  5244.           }
  5245.  
  5246.  
  5247.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  5248.  
  5249.             cProto.attached37 = cProto.attached;
  5250.             cProto.detached37 = cProto.detached;
  5251.  
  5252.             let naohzId = 0;
  5253.             cProto.__naohzId__ = 0;
  5254.             cProto.attached = function () {
  5255.               Promise.resolve().then(() => {
  5256.  
  5257.                 const hostElement = this.hostElement || this;
  5258.                 if (!(hostElement instanceof HTMLElement)) return;
  5259.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  5260.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  5261.                 // or #chat-messages
  5262.                 if (!ironPage) return;
  5263.  
  5264.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5265.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  5266.                 this.__naohzId__ = ++naohzId;
  5267.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  5268.  
  5269.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5270.  
  5271.               });
  5272.               return this.attached37.apply(this, arguments);
  5273.             };
  5274.             cProto.detached = function () {
  5275.               Promise.resolve().then(() => {
  5276.  
  5277.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  5278.                 if (!ironPage) return;
  5279.  
  5280.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5281.  
  5282.               });
  5283.               return this.detached37.apply(this, arguments);
  5284.             };
  5285.  
  5286.             const clickFade = (u) => {
  5287.               u.click();
  5288.             };
  5289.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  5290.  
  5291.               const target = (evt || 0).target || 0;
  5292.               if (!target) return;
  5293.  
  5294.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  5295.                 const is = p.is;
  5296.                 if (typeof is === 'string' && is) {
  5297.  
  5298.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  5299.                     return;
  5300.                   }
  5301.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  5302.                     const fade = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  5303.                     if (fade) {
  5304.                       Promise.resolve(fade).then(clickFade);
  5305.                       evt && evt.stopPropagation();
  5306.                     }
  5307.                     return;
  5308.                   }
  5309.                   if (is !== 'yt-live-chat-ticker-renderer') {
  5310.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  5311.                     if (!is.endsWith('-renderer')) return;
  5312.                   }
  5313.  
  5314.                 } else {
  5315.                   if ((p.nodeName || '').includes('BUTTON')) return;
  5316.                 }
  5317.  
  5318.               }
  5319.             };
  5320.  
  5321.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  5322.  
  5323.           } else {
  5324.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  5325.           }
  5326.  
  5327.  
  5328.         })();
  5329.  
  5330.         console.log("[End]");
  5331.  
  5332.         console.groupEnd();
  5333.  
  5334.       }).catch(console.warn);
  5335.  
  5336.  
  5337.       if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  5338.  
  5339.  
  5340.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  5341.  
  5342.           mightFirstCheckOnYtInit();
  5343.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  5344.           console.log("[Begin]");
  5345.           (() => {
  5346.  
  5347.             const tag = "yt-live-chat-message-input-renderer"
  5348.             const dummy = document.createElement(tag);
  5349.  
  5350.             const cProto = getProto(dummy);
  5351.             if (!cProto || !cProto.attached) {
  5352.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5353.               return;
  5354.             }
  5355.  
  5356.             let doHack = false;
  5357.             if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  5358.  
  5359.               // not cancellable
  5360.  
  5361.  
  5362.               doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  5363.  
  5364.             }
  5365.  
  5366.             if (doHack) {
  5367.  
  5368.               cProto.handleTimeout = function (a) {
  5369.                 console.log('cProto.handleTimeout', tag)
  5370.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5371.                 this.timeoutDurationMs = this.timeoutMs = a;
  5372.                 this.countdownRatio = 1;
  5373.                 0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  5374.               };
  5375.               cProto.updateTimeout = function (a) {
  5376.                 console.log('cProto.updateTimeout', tag)
  5377.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5378.                 this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  5379.                   this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  5380.                 this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  5381.                   rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  5382.               };
  5383.  
  5384.               console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  5385.             } else {
  5386.  
  5387.               console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  5388.               console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  5389.  
  5390.               console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  5391.             }
  5392.  
  5393.           })();
  5394.  
  5395.           console.log("[End]");
  5396.  
  5397.           console.groupEnd();
  5398.  
  5399.  
  5400.         })
  5401.  
  5402.  
  5403.       }
  5404.  
  5405.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  5406.  
  5407.  
  5408.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  5409.  
  5410.           mightFirstCheckOnYtInit();
  5411.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  5412.           console.log("[Begin]");
  5413.           (() => {
  5414.  
  5415.             const tag = "yt-emoji-picker-renderer"
  5416.             const dummy = document.createElement(tag);
  5417.  
  5418.             const cProto = getProto(dummy);
  5419.             if (!cProto || !cProto.attached) {
  5420.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5421.               return;
  5422.             }
  5423.  
  5424.             let doHack = false;
  5425.             if (typeof cProto.animateScroll_ === 'function') {
  5426.  
  5427.               // not cancellable
  5428.               console.log('animateScroll_', typeof cProto.animateScroll_)
  5429.  
  5430.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  5431.  
  5432.             }
  5433.  
  5434.             if (doHack) {
  5435.  
  5436.               const querySelector = HTMLElement.prototype.querySelector;
  5437.               const U = (element) => ({
  5438.                 querySelector: (selector) => querySelector.call(element, selector)
  5439.               });
  5440.  
  5441.               cProto.animateScroll_ = function (a) {
  5442.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  5443.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  5444.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  5445.                 a -= this.lastAnimationTime_;
  5446.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  5447.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  5448.                     this.animationEnd_ = this.animationStart_ = null,
  5449.                     this.lastAnimationTime_ = 0);
  5450.                 this.updateButtons_()
  5451.               }
  5452.  
  5453.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  5454.             } else {
  5455.  
  5456.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  5457.             }
  5458.  
  5459.           })();
  5460.  
  5461.           console.log("[End]");
  5462.  
  5463.           console.groupEnd();
  5464.         });
  5465.       }
  5466.  
  5467.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  5468.  
  5469.  
  5470.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  5471.  
  5472.           mightFirstCheckOnYtInit();
  5473.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  5474.           console.log("[Begin]");
  5475.           (() => {
  5476.  
  5477.             const tag = "yt-live-chat-docked-message"
  5478.             const dummy = document.createElement(tag);
  5479.  
  5480.             const cProto = getProto(dummy);
  5481.             if (!cProto || !cProto.attached) {
  5482.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5483.               return;
  5484.             }
  5485.  
  5486.             let doHack = false;
  5487.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  5488.  
  5489.               // cancelable - this.intersectRAF <detached>
  5490.               // yt-live-chat-docked-message
  5491.               // boundCheckIntersections <-> checkIntersections
  5492.               // onDockableMessagesChanged
  5493.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  5494.  
  5495.               console.log('detached', typeof cProto.detached)
  5496.               console.log('checkIntersections', typeof cProto.checkIntersections)
  5497.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  5498.  
  5499.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  5500.  
  5501.             }
  5502.  
  5503.             if (doHack) {
  5504.  
  5505.               cProto.checkIntersections = function () {
  5506.                 // console.log('cProto.checkIntersections', tag)
  5507.                 if (this.dockableMessages.length) {
  5508.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  5509.                   let a = this.dockableMessages[0]
  5510.                     , b = this.hostElement.getBoundingClientRect();
  5511.                   a = a.getBoundingClientRect();
  5512.                   let c = a.top - b.top
  5513.                     , d = 8 >= c;
  5514.                   c = 8 >= c - this.hostElement.clientHeight;
  5515.                   if (d) {
  5516.                     let e;
  5517.                     for (; d;) {
  5518.                       e = this.dockableMessages.shift();
  5519.                       d = this.dockableMessages[0];
  5520.                       if (!d)
  5521.                         break;
  5522.                       d = d.getBoundingClientRect();
  5523.                       c = d.top - b.top;
  5524.                       let f = 8 >= c;
  5525.                       if (8 >= c - a.height)
  5526.                         if (f)
  5527.                           a = d;
  5528.                         else
  5529.                           return;
  5530.                       d = f
  5531.                     }
  5532.                     this.dock(e)
  5533.                   } else
  5534.                     c && this.dockedItem && this.clear()
  5535.                 } else
  5536.                   this.intersectRAF = 0
  5537.               }
  5538.  
  5539.               cProto.onDockableMessagesChanged = function () {
  5540.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  5541.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  5542.               }
  5543.  
  5544.               cProto.detached = function () {
  5545.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  5546.               }
  5547.  
  5548.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  5549.             } else {
  5550.  
  5551.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  5552.             }
  5553.  
  5554.           })();
  5555.  
  5556.           console.log("[End]");
  5557.  
  5558.           console.groupEnd();
  5559.  
  5560.         }).catch(console.warn);
  5561.  
  5562.       }
  5563.  
  5564.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  5565.  
  5566.  
  5567.         customElements.whenDefined("yt-img-shadow").then(() => {
  5568.  
  5569.           mightFirstCheckOnYtInit();
  5570.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  5571.           console.log("[Begin]");
  5572.           (() => {
  5573.  
  5574.             const tag = "yt-img-shadow"
  5575.             const dummy = document.createElement(tag);
  5576.  
  5577.             const cProto = getProto(dummy);
  5578.             if (!cProto || !cProto.attached) {
  5579.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5580.               return;
  5581.             }
  5582.  
  5583.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  5584.  
  5585.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  5586.               cProto.thumbnailChanged_ = function (a) {
  5587.  
  5588.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  5589.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  5590.  
  5591.                 return this.thumbnailChanged66_.apply(this, arguments)
  5592.  
  5593.               }
  5594.               console.log("cProto.thumbnailChanged_ - OK");
  5595.  
  5596.             } else {
  5597.               console.log("cProto.thumbnailChanged_ - NG");
  5598.  
  5599.             }
  5600.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  5601.  
  5602.               cProto.setSrc66_ = cProto.setSrc_;
  5603.               cProto.setSrc_ = function (a) {
  5604.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  5605.                 return this.setSrc66_.apply(this, arguments)
  5606.               }
  5607.  
  5608.               console.log("cProto.setSrc_ - OK");
  5609.             } else {
  5610.  
  5611.               console.log("cProto.setSrc_ - NG");
  5612.             }
  5613.  
  5614.           })();
  5615.  
  5616.           console.log("[End]");
  5617.  
  5618.           console.groupEnd();
  5619.  
  5620.         }).catch(console.warn);
  5621.  
  5622.       }
  5623.  
  5624.       if (FIX_THUMBNAIL_DATACHANGED) {
  5625.  
  5626.  
  5627.  
  5628.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  5629.  
  5630.           mightFirstCheckOnYtInit();
  5631.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  5632.           console.log("[Begin]");
  5633.           (() => {
  5634.  
  5635.             const tag = "yt-live-chat-author-badge-renderer"
  5636.             const dummy = document.createElement(tag);
  5637.  
  5638.             const cProto = getProto(dummy);
  5639.             if (!cProto || !cProto.attached) {
  5640.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5641.               return;
  5642.             }
  5643.  
  5644.  
  5645.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  5646.  
  5647.  
  5648.  
  5649.               cProto.dataChanged86 = cProto.dataChanged;
  5650.               cProto.dataChanged = function (a) {
  5651.  
  5652.                 /*
  5653.  
  5654.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  5655.                       b.removeChild(b.firstChild);
  5656.                   if (a)
  5657.                       if (a.icon) {
  5658.                           var c = document.createElement("yt-icon");
  5659.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  5660.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  5661.                           b.appendChild(c)
  5662.                       } else if (a.customThumbnail) {
  5663.                           c = document.createElement("img");
  5664.                           var d;
  5665.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5666.                           b.appendChild(c),
  5667.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  5668.                       }
  5669.  
  5670.                 */
  5671.  
  5672.                 const image = ((this || 0).$ || 0).image
  5673.                 if (image && a && image.firstElementChild) {
  5674.                   let exisiting = image.firstElementChild;
  5675.                   if (exisiting === image.lastElementChild) {
  5676.  
  5677.  
  5678.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  5679.  
  5680.                       let c = exisiting;
  5681.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  5682.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  5683.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  5684.                       } else {
  5685.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  5686.                         if (c.icon !== p) c.icon = p;
  5687.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  5688.                       }
  5689.                       return;
  5690.  
  5691.  
  5692.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  5693.  
  5694.                       let c = exisiting;
  5695.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  5696.  
  5697.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  5698.                         return;
  5699.                       }
  5700.                       /*
  5701.  
  5702.                       var d;
  5703.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5704.  
  5705.  
  5706.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  5707.                         */
  5708.                     }
  5709.  
  5710.  
  5711.                   }
  5712.                 }
  5713.                 return this.dataChanged86.apply(this, arguments)
  5714.  
  5715.               }
  5716.               console.log("cProto.dataChanged - OK");
  5717.  
  5718.             } else {
  5719.               assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  5720.               console.log("cProto.dataChanged - NG");
  5721.  
  5722.             }
  5723.  
  5724.           })();
  5725.  
  5726.           console.log("[End]");
  5727.  
  5728.           console.groupEnd();
  5729.  
  5730.         }).catch(console.warn);
  5731.  
  5732.  
  5733.       }
  5734.  
  5735.  
  5736.       if (FIX_TOOLTIP_DISPLAY) {
  5737.  
  5738.  
  5739.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  5740.  
  5741.           mightFirstCheckOnYtInit();
  5742.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  5743.           console.log("[Begin]");
  5744.           (() => {
  5745.  
  5746.             const tag = "tp-yt-paper-tooltip"
  5747.             const dummy = document.createElement(tag);
  5748.  
  5749.             const cProto = getProto(dummy);
  5750.             if (!cProto || !cProto.attached) {
  5751.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5752.               return;
  5753.             }
  5754.  
  5755.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  5756.  
  5757.               cProto._readyClients43 = cProto._readyClients;
  5758.               cProto._readyClients = function () {
  5759.                 let r = cProto._readyClients43.apply(this, arguments);
  5760.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  5761.                 return r;
  5762.               }
  5763.  
  5764.               console.log("_readyClients - OK");
  5765.  
  5766.             } else {
  5767.               console.log("_readyClients - NG");
  5768.  
  5769.             }
  5770.  
  5771.             if (typeof cProto.show === 'function' && !cProto.show17) {
  5772.               cProto.show17 = cProto.show;
  5773.               cProto.show = function () {
  5774.  
  5775.                 let r = this.show17.apply(this, arguments);
  5776.                 this._showing === true && Promise.resolve().then(() => {
  5777.                   const tooltip = (this.$ || 0).tooltip;
  5778.  
  5779.                   if (tooltip && tooltip.firstElementChild === null) {
  5780.                     let text = tooltip.textContent;
  5781.                     if (typeof text === 'string' && text.length >= 2) {
  5782.                       tooltip.textContent = text.trim();
  5783.                     }
  5784.                   }
  5785.                 }).catch(console.warn)
  5786.                 return r;
  5787.               }
  5788.  
  5789.               console.log("trim tooltip content - OK");
  5790.  
  5791.             } else {
  5792.               console.log("trim tooltip content - NG");
  5793.  
  5794.             }
  5795.  
  5796.             /*
  5797.             cProto.updatePosition61 = cProto.updatePosition;
  5798.  
  5799.  
  5800.             cProto.updatePosition = function () {
  5801.  
  5802.  
  5803.               if (this._target && this.offsetParent) {
  5804.                 var a = this.offset;
  5805.                 14 != this.marginTop && 14 == this.offset && (a = this.marginTop);
  5806.                 var b = this.offsetParent.getBoundingClientRect()
  5807.                   , c = this._target.getBoundingClientRect()
  5808.                   , d = this.getBoundingClientRect()
  5809.                   , e = (c.width - d.width) / 2
  5810.                   , h = (c.height - d.height) / 2
  5811.                   , l = c.left - b.left
  5812.                   , m = c.top - b.top;
  5813.                 switch (this.position) {
  5814.                   case "top":
  5815.                     var p = l + e;
  5816.                     var q = m - d.height - a;
  5817.                     break;
  5818.                   case "bottom":
  5819.                     p = l + e;
  5820.                     q = m + c.height + a;
  5821.                     break;
  5822.                   case "left":
  5823.                     p = l - d.width - a;
  5824.                     q = m + h;
  5825.                     break;
  5826.                   case "right":
  5827.                     p = l + c.width + a,
  5828.                       q = m + h;
  5829.                 }
  5830.  
  5831.               if(this.ascee) {
  5832.                 this.fitToVisibleBounds = false;
  5833.               }
  5834.                 this.fitToVisibleBounds ? (b.left + p + d.width > window.innerWidth ? (this.style.right = "0px",
  5835.                   this.style.left = "auto") : (this.style.left = Math.max(0, p) + "px",
  5836.                     this.style.right = "auto"),
  5837.                   b.top + q + d.height > window.innerHeight ? (this.style.bottom = b.height + "px",
  5838.                     this.style.top = "auto") : (this.style.top = Math.max(-b.top, q) + "px",
  5839.                       this.style.bottom = "auto")) : (this.style.left = p + "px",
  5840.                         this.style.top = q + "px")
  5841.               }
  5842.             }
  5843.  
  5844.             cProto.updateStyles61 = cProto.updateStyles;
  5845.             cProto.updateStyles= function(){
  5846.               if(this.ascee) return;
  5847.               return this.updateStyles61.apply(this,arguments);
  5848.             }
  5849.             */
  5850.  
  5851.  
  5852.           })();
  5853.  
  5854.           console.log("[End]");
  5855.  
  5856.           console.groupEnd();
  5857.  
  5858.         }).catch(console.warn);
  5859.  
  5860.  
  5861.  
  5862.       }
  5863.  
  5864.  
  5865.  
  5866.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  5867.  
  5868.  
  5869.         const hookDocumentMouseDownSetupFn = () => {
  5870.  
  5871.  
  5872.  
  5873.           let muzTimestamp = 0;
  5874.           let nszDropdown = null;
  5875.  
  5876.  
  5877.  
  5878.           const handlerObject = {
  5879.  
  5880.             // mdHandler282 : function (evt) {
  5881.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5882.             //   if (!evt || !evt.isTrusted) return;
  5883.             //   muzTimestamp = 0;
  5884.             //   nszDropdown = null;
  5885.  
  5886.             //   const hostElement = this.hostElement || this;
  5887.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  5888.             //   if (!hostElement.contains(evt.target)) return;
  5889.             //   let targetDropDown = null;
  5890.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  5891.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  5892.             //       targetDropDown = dropdown;
  5893.             //     }
  5894.             //   }
  5895.             //   if ((nszDropdown = targetDropDown)) {
  5896.             //     muzTimestamp = Date.now();
  5897.             //     evt.stopImmediatePropagation();
  5898.             //     evt.stopPropagation();
  5899.             //   }
  5900.  
  5901.             // },
  5902.  
  5903.  
  5904.             muHandler282: function (evt) {
  5905.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5906.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5907.               const dropdown = nszDropdown;
  5908.               muzTimestamp = 0;
  5909.               nszDropdown = null;
  5910.  
  5911.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  5912.               const hostElement = kurMPC.hostElement || kurMPC;
  5913.               if (!hostElement.hasAttribute('menu-visible')) return;
  5914.  
  5915.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  5916.               if (chatBanner) return;
  5917.  
  5918.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  5919.  
  5920.                 /*
  5921.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5922.                 if(parentButton) return;
  5923.                 */
  5924.  
  5925.                 muzTimestamp = Date.now();
  5926.                 evt.stopImmediatePropagation();
  5927.                 evt.stopPropagation();
  5928.                 Promise.resolve(dropdown).then((dropdown) => {
  5929.                   dropdown.cancel();
  5930.                 });
  5931.                 // document.body.click();
  5932.               }
  5933.  
  5934.             },
  5935.  
  5936.             mlHandler282: function (evt) {
  5937.               muzTimestamp = 0;
  5938.               nszDropdown = null;
  5939.             },
  5940.  
  5941.             ckHandler282: function (evt) {
  5942.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5943.  
  5944.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5945.               if (Date.now() - muzTimestamp < 40) {
  5946.  
  5947.                 /*
  5948.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5949.                 if(parentButton) return;
  5950.                 */
  5951.  
  5952.                 muzTimestamp = Date.now();
  5953.                 evt.stopImmediatePropagation();
  5954.                 evt.stopPropagation();
  5955.               }
  5956.  
  5957.             },
  5958.  
  5959.             tapHandler282: function (evt) {
  5960.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5961.  
  5962.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5963.               if (Date.now() - muzTimestamp < 40) {
  5964.  
  5965.                 /*
  5966.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5967.                 if(parentButton) return;
  5968.                 */
  5969.  
  5970.                 muzTimestamp = Date.now();
  5971.                 evt.stopImmediatePropagation();
  5972.                 evt.stopPropagation();
  5973.               }
  5974.  
  5975.             },
  5976.  
  5977.  
  5978.             handleEvent(evt) {
  5979.  
  5980.  
  5981.               if (evt) {
  5982.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  5983.                 const cnt = kurMPC.inst || kurMPC;
  5984.                 const hostElement = cnt.hostElement || cnt;
  5985.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  5986.                 switch (evt.type) {
  5987.                   // case 'mousedown':
  5988.                   // return this.mdHandler282.call(kurMPC, evt);
  5989.                   case 'mouseup':
  5990.                     return this.muHandler282(evt);
  5991.                   case 'mouseleave':
  5992.                     return this.mlHandler282(evt);
  5993.                   case 'tap':
  5994.                     return this.tapHandler282(evt);
  5995.                   case 'click':
  5996.                     return this.ckHandler282(evt);
  5997.                 }
  5998.               }
  5999.  
  6000.             }
  6001.  
  6002.  
  6003.  
  6004.           }
  6005.  
  6006.           document.addEventListener('mousedown', function (evt) {
  6007.  
  6008.             if (!evt || !evt.isTrusted || !evt.target) return;
  6009.  
  6010.  
  6011.  
  6012.             muzTimestamp = 0;
  6013.             nszDropdown = null;
  6014.  
  6015.             /*
  6016.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6017.             if(parentButton){
  6018.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  6019.               if(kurMPC){
  6020.                 evt.preventDefault();
  6021.                 evt.stopImmediatePropagation();
  6022.                 evt.stopPropagation();
  6023.               }
  6024.               return;
  6025.             }
  6026.             */
  6027.  
  6028.             /** @type {HTMLElement | null} */
  6029.             const kurMP = kRef(currentMenuPivotWR);
  6030.             if (!kurMP) return;
  6031.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  6032.  
  6033.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  6034.  
  6035.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  6036.  
  6037.             const chatBanner = HTMLElement.prototype.closest.call(kurMPC, 'yt-live-chat-banner-renderer') || 0;
  6038.             if (chatBanner) return;
  6039.  
  6040.  
  6041.             let targetDropDown = null;
  6042.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  6043.               if (dropdown && dropdown.positionTarget === kurMP) {
  6044.                 targetDropDown = dropdown;
  6045.               }
  6046.             }
  6047.  
  6048.             if (!targetDropDown) return;
  6049.  
  6050.  
  6051.             /*
  6052.             if (parentButton) {
  6053.               evt.preventDefault();
  6054.               evt.stopImmediatePropagation();
  6055.               evt.stopPropagation();
  6056.               currentMenuPivotWR = mWeakRef(kurMPC);
  6057.               return;
  6058.             }
  6059.             */
  6060.  
  6061.             if ((nszDropdown = targetDropDown)) {
  6062.               muzTimestamp = Date.now();
  6063.               evt.stopImmediatePropagation();
  6064.               evt.stopPropagation();
  6065.               currentMenuPivotWR = mWeakRef(kurMPC);
  6066.  
  6067.               const listenOpts = { capture: true, passive: false, once: true };
  6068.  
  6069.               // remove unexcecuted eventHandler
  6070.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  6071.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  6072.               document.removeEventListener('tap', handlerObject, listenOpts);
  6073.               document.removeEventListener('click', handlerObject, listenOpts);
  6074.  
  6075.               // inject one time eventHandler to by pass events
  6076.               document.addEventListener('mouseup', handlerObject, listenOpts);
  6077.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  6078.               document.addEventListener('tap', handlerObject, listenOpts);
  6079.               document.addEventListener('click', handlerObject, listenOpts);
  6080.  
  6081.             }
  6082.  
  6083.           }, true);
  6084.  
  6085.         }
  6086.  
  6087.  
  6088.         // yt-live-chat-paid-message-renderer ??
  6089.  
  6090.         /*
  6091.  
  6092.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  6093.  
  6094.  
  6095.         "yt-live-chat-ticker-paid-message-item-renderer"
  6096.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  6097.         "yt-live-chat-paid-message-renderer"
  6098.         "yt-live-chat-text-message-renderer"
  6099.         "yt-live-chat-paid-sticker-renderer"
  6100.  
  6101.         */
  6102.  
  6103.  
  6104.         whenDefinedMultiple([
  6105.  
  6106.           "yt-live-chat-paid-message-renderer",
  6107.           "yt-live-chat-membership-item-renderer",
  6108.           "yt-live-chat-paid-sticker-renderer",
  6109.           "yt-live-chat-text-message-renderer",
  6110.           "yt-live-chat-auto-mod-message-renderer",
  6111.  
  6112.           /*
  6113.           "yt-live-chat-ticker-paid-message-item-renderer",
  6114.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  6115.           "yt-live-chat-paid-message-renderer",
  6116.           "yt-live-chat-text-message-renderer",
  6117.           "yt-live-chat-paid-sticker-renderer",
  6118.  
  6119.           "yt-live-chat-ticker-sponsor-item-renderer",
  6120.           "yt-live-chat-banner-header-renderer",
  6121.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6122.           "ytd-sponsorships-live-chat-header-renderer",
  6123.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6124.  
  6125.  
  6126.  
  6127.  
  6128.           "yt-live-chat-auto-mod-message-renderer",
  6129.           "yt-live-chat-text-message-renderer",
  6130.           "yt-live-chat-paid-message-renderer",
  6131.  
  6132.           "yt-live-chat-legacy-paid-message-renderer",
  6133.           "yt-live-chat-membership-item-renderer",
  6134.           "yt-live-chat-paid-sticker-renderer",
  6135.           "yt-live-chat-donation-announcement-renderer",
  6136.           "yt-live-chat-moderation-message-renderer",
  6137.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6138.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6139.           "yt-live-chat-viewer-engagement-message-renderer",
  6140.  
  6141.           */
  6142.  
  6143.  
  6144.         ]).then(sTags => {
  6145.  
  6146.  
  6147.           mightFirstCheckOnYtInit();
  6148.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  6149.           console.log("[Begin]");
  6150.           let doMouseHook = false;
  6151.  
  6152.           const dProto = {
  6153.             isClickableChatRow111: function () {
  6154.               return (
  6155.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  6156.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  6157.               ); // follow .onItemTap(a)
  6158.             }
  6159.           };
  6160.  
  6161.           for (const sTag of sTags) { // ##tag##
  6162.  
  6163.  
  6164.             (() => {
  6165.  
  6166.  
  6167.  
  6168.               const tag = sTag;
  6169.               const dummy = document.createElement(tag);
  6170.  
  6171.               const cProto = getProto(dummy);
  6172.               if (!cProto || !cProto.attached) {
  6173.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  6174.                 return;
  6175.               }
  6176.  
  6177.  
  6178.               const dCnt = dummy || dummy.inst || 0;
  6179.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  6180.  
  6181.  
  6182.  
  6183.  
  6184.  
  6185.  
  6186.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  6187.  
  6188.  
  6189.  
  6190.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  6191.  
  6192.                 if (toHookDocumentMouseDown) {
  6193.                   doMouseHook = true;
  6194.                 }
  6195.  
  6196.  
  6197.  
  6198.                 console.log("shouldSupportWholeItemClick Y", tag);
  6199.  
  6200.  
  6201.               } else {
  6202.  
  6203.                 console.log("shouldSupportWholeItemClick N", tag);
  6204.               }
  6205.  
  6206.  
  6207.  
  6208.             })();
  6209.  
  6210.           }
  6211.  
  6212.  
  6213.           if (doMouseHook) {
  6214.  
  6215.             hookDocumentMouseDownSetupFn();
  6216.  
  6217.  
  6218.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  6219.           }
  6220.  
  6221.           console.log("[End]");
  6222.  
  6223.           console.groupEnd();
  6224.  
  6225.  
  6226.         }).catch(console.warn);
  6227.  
  6228.  
  6229.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  6230.  
  6231.  
  6232.       }
  6233.  
  6234.  
  6235.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  6236.  
  6237.         let rr = null;
  6238.         const p1 = new Promise(resolve => {
  6239.           rr = resolve;
  6240.         });
  6241.  
  6242.         const p1unlock = () => {
  6243.           const f = rr;
  6244.           if (f) {
  6245.             rr = null;
  6246.             f();
  6247.           }
  6248.         }
  6249.  
  6250.         return {
  6251.           p1,
  6252.           p1unlock,
  6253.           assignLock: (targetCnt, timeout) => {
  6254.             targetCnt.__showContextMenu_assign_lock__(p1);
  6255.             if (timeout) setTimeout(p1unlock, timeout);
  6256.           }
  6257.         }
  6258.  
  6259.       }
  6260.  
  6261.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  6262.  
  6263.         document.addEventListener('mousedown', function (evt) {
  6264.  
  6265.           const maxloopDOMTreeElements = 4;
  6266.           const maxloopYtCompontents = 4;
  6267.           let j1 = 0;
  6268.           let j2 = 0;
  6269.           let target = (evt || 0).target || 0;
  6270.           if (!target) return;
  6271.  
  6272.  
  6273.           while (target instanceof HTMLElement) {
  6274.             if (++j1 > maxloopDOMTreeElements) break;
  6275.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') break;
  6276.             target = nodeParent(target);
  6277.           }
  6278.           const components = [];
  6279.           while (target instanceof HTMLElement) {
  6280.             if (++j2 > maxloopYtCompontents) break;
  6281.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') {
  6282.               components.push(target);
  6283.             }
  6284.             if (typeof (target.inst || target).showContextMenu === 'function') break;
  6285.             target = target.parentComponent || (target.inst || 0).parentComponent || null;
  6286.           }
  6287.           if (!(target instanceof HTMLElement)) return;
  6288.           const targetCnt = target.inst || target;
  6289.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  6290.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  6291.             return;
  6292.           }
  6293.  
  6294.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  6295.           if (!endpoint) return;
  6296.           if (targetCnt.opened || !targetCnt.isAttached) return;
  6297.  
  6298.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  6299.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  6300.           }
  6301.  
  6302.           let doPreRequest = false;
  6303.           if (components.length >= 2 && components[0].id === 'menu-button' && (target.$ || 0)['menu-button'] === components[0]) {
  6304.             doPreRequest = true;
  6305.           } else if (components.length === 1 && components[0] === target) {
  6306.             doPreRequest = true;
  6307.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (target.$ || 0)['author-photo'] === components[0]) {
  6308.             doPreRequest = true;
  6309.           }
  6310.           if (doPreRequest === false) {
  6311.             console.log('doPreRequest = fasle on showContextMenu', components);
  6312.             return;
  6313.           }
  6314.  
  6315.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  6316.  
  6317.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  6318.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  6319.             return;
  6320.           }
  6321.  
  6322.  
  6323.           const onSuccess = (a) => {
  6324.             /*
  6325.  
  6326.               dQ() && (a = a.response);
  6327.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6328.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  6329.  
  6330.             */
  6331.  
  6332.             a = a.response || a;
  6333.  
  6334.             if (!a) {
  6335.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  6336.               return;
  6337.             }
  6338.  
  6339.             let z = null;
  6340.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6341.  
  6342.             if (z) {
  6343.               a = z;
  6344.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  6345.             }
  6346.  
  6347.           };
  6348.           const onFailure = (a) => {
  6349.  
  6350.             /*
  6351.  
  6352.               if (a instanceof Error || a instanceof Object || a instanceof String)
  6353.                   var b = a;
  6354.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  6355.  
  6356.             */
  6357.  
  6358.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  6359.             // console.log('onFailure', a)
  6360.  
  6361.           };
  6362.  
  6363.           if (doPreRequest) {
  6364.  
  6365.             let propertyCounter = 0;
  6366.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  6367.             const p1Timeout = 800;
  6368.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  6369.  
  6370.             try {
  6371.  
  6372.               const onSuccessHelperFn = function () {
  6373.                 pm1.p1unlock();
  6374.                 if (propertyCounter !== 5) {
  6375.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  6376.                   return;
  6377.                 }
  6378.                 if (this[proxyKey] !== targetCnt) {
  6379.                   console.log('Error in prerequest for showContextMenu.this');
  6380.                   return;
  6381.                 }
  6382.                 onSuccess(...arguments);
  6383.               };
  6384.               const onFailureHelperFn = function () {
  6385.                 pm1.p1unlock();
  6386.                 if (propertyCounter !== 5) {
  6387.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  6388.                   return;
  6389.                 }
  6390.                 if (this[proxyKey] !== targetCnt) {
  6391.                   console.log('Error in prerequest for showContextMenu.this');
  6392.                   return;
  6393.                 }
  6394.                 onFailure(...arguments);
  6395.  
  6396.               }
  6397.               const fakeTargetCnt = new Proxy({
  6398.                 __showContextMenu_forceNativeRequest__: 1,
  6399.                 __showContextMenu_sync_mode_request__: 1,
  6400.                 get handleGetContextMenuResponse_() {
  6401.                   propertyCounter += 2;
  6402.                   return onSuccessHelperFn;
  6403.                 },
  6404.                 get handleGetContextMenuError() {
  6405.                   propertyCounter += 3;
  6406.                   return onFailureHelperFn;
  6407.                 }
  6408.               }, {
  6409.                 get(_, key, receiver) {
  6410.                   if (key in _) return _[key];
  6411.                   if (key === proxyKey) return targetCnt;
  6412.  
  6413.                   let giveNative = false;
  6414.                   if (key in targetCnt) {
  6415.                     if (key === 'data') giveNative = true;
  6416.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  6417.                   }
  6418.                   if (giveNative) return targetCnt[key];
  6419.                 }
  6420.               });
  6421.  
  6422.               const fakeEvent = (() => {
  6423.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  6424.                 const nf = function () { }
  6425.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  6426.  
  6427.                 return {
  6428.                   type: 'tap',
  6429.                   eventPhase: 0,
  6430.                   isTrusted: false,
  6431.                   __composed: true,
  6432.                   bubbles, cancelable, cancelBubble, timeStamp,
  6433.                   target, srcElement, defaultPrevented, currentTarget, composed,
  6434.                   stopPropagation, stopImmediatePropagation, preventDefault
  6435.                 };
  6436.               })(evt);
  6437.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  6438.  
  6439.  
  6440.             } catch (e) {
  6441.               console.warn(e);
  6442.               propertyCounter = 7;
  6443.  
  6444.             }
  6445.             if (propertyCounter !== 5) {
  6446.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  6447.               return;
  6448.             }
  6449.  
  6450.             pm1.assignLock(targetCnt, p1Timeout);
  6451.  
  6452.           }
  6453.  
  6454.  
  6455.  
  6456.  
  6457.  
  6458.  
  6459.         }, true);
  6460.  
  6461.  
  6462.       }
  6463.  
  6464.  
  6465.  
  6466.       /*
  6467.  
  6468.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  6469.  
  6470.       */
  6471.  
  6472.       whenDefinedMultiple([
  6473.         "yt-live-chat-ticker-sponsor-item-renderer",
  6474.         "yt-live-chat-banner-header-renderer",
  6475.         "yt-live-chat-text-message-renderer",
  6476.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6477.         "ytd-sponsorships-live-chat-header-renderer",
  6478.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6479.  
  6480.         "yt-live-chat-paid-sticker-renderer",
  6481.         "yt-live-chat-viewer-engagement-message-renderer",
  6482.         "yt-live-chat-paid-message-renderer"
  6483.  
  6484.  
  6485.  
  6486.  
  6487.       ]).then(sTags => {
  6488.  
  6489.         mightFirstCheckOnYtInit();
  6490.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  6491.         console.log("[Begin]");
  6492.  
  6493.  
  6494.         const __showContextMenu_mutex__ = new Mutex();
  6495.         let __showContextMenu_mutex_unlock__ = null;
  6496.         let lastShowMenuTarget = null;
  6497.  
  6498.  
  6499.  
  6500.  
  6501.         const wm37 = new WeakMap();
  6502.  
  6503.         const dProto = {
  6504.  
  6505.  
  6506.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  6507.  
  6508.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  6509.             if (a) {
  6510.               if (doDeepCopy) a = deepCopy(a);
  6511.               wm37.set(endpoint, a);
  6512.             } else {
  6513.               wm37.remove(endpoint);
  6514.             }
  6515.           },
  6516.           __getCachedEndpointData__: function (endpoint) {
  6517.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  6518.             if (endpoint) return wm37.get(endpoint);
  6519.             return null;
  6520.           },
  6521.           /** @type {(resolvedEndpoint: any) => void 0} */
  6522.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  6523.  
  6524.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  6525.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  6526.             Promise.resolve(resolvedEndpoint).then(() => {
  6527.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  6528.               this.showContextMenu_(resolvedEndpoint);
  6529.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  6530.             });
  6531.  
  6532.  
  6533.           },
  6534.  
  6535.  
  6536.  
  6537.           showContextMenuForCacheReopen: function (a) {
  6538.             if (!this.__showContextMenu_forceNativeRequest__) {
  6539.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6540.               if (endpoint) {
  6541.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  6542.                 if (resolvedEndpoint) {
  6543.                   this.__showCachedContextMenu__(resolvedEndpoint);
  6544.                   a && a.stopPropagation()
  6545.                   return;
  6546.                 }
  6547.               }
  6548.             }
  6549.             return this.showContextMenu37(a);
  6550.           },
  6551.  
  6552.           showContextMenuForCacheReopen_: function (a) {
  6553.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  6554.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6555.               if (endpoint) {
  6556.                 const f = this.__cacheResolvedEndpointData__;
  6557.                 if (typeof f === 'function') f(endpoint, a, true);
  6558.               }
  6559.             }
  6560.             return this.showContextMenu37_(a);
  6561.           },
  6562.  
  6563.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  6564.  
  6565.           showContextMenuWithDisableScroll: function (a) {
  6566.  
  6567.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6568.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  6569.  
  6570.               const parentComponent = this.parentComponent;
  6571.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  6572.                 parentComponent.allowScroll = false;
  6573.               }
  6574.             }
  6575.  
  6576.             return this.showContextMenu48.apply(this, arguments);
  6577.  
  6578.           },
  6579.  
  6580.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  6581.  
  6582.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  6583.             return __showContextMenu_mutex_unlock__ === null;
  6584.           },
  6585.  
  6586.           __showContextMenu_assign_lock__: function (p) {
  6587.  
  6588.             const mutex = __showContextMenu_mutex__;
  6589.  
  6590.             mutex.lockWith(unlock => {
  6591.               p.then(unlock);
  6592.             });
  6593.  
  6594.           },
  6595.  
  6596.           showContextMenuWithMutex: function (a) {
  6597.             lastShowMenuTarget = this;
  6598.  
  6599.             if (this.__showContextMenu_sync_mode_request__) {
  6600.  
  6601.               return this.showContextMenu47(a);
  6602.             } else {
  6603.  
  6604.               const mutex = __showContextMenu_mutex__;
  6605.  
  6606.               mutex.lockWith(unlock => {
  6607.                 if (lastShowMenuTarget !== this) {
  6608.                   unlock();
  6609.                   return;
  6610.                 }
  6611.  
  6612.                 setTimeout(unlock, 800); // in case network failure
  6613.                 __showContextMenu_mutex_unlock__ = unlock;
  6614.                 try {
  6615.                   this.showContextMenu47(a);
  6616.                 } catch (e) {
  6617.                   console.warn(e);
  6618.                   unlock(); // in case function script error
  6619.                 }
  6620.  
  6621.               });
  6622.  
  6623.             }
  6624.  
  6625.  
  6626.           },
  6627.  
  6628.           showContextMenuWithMutex_: function (a) {
  6629.  
  6630.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  6631.               __showContextMenu_mutex_unlock__();
  6632.               __showContextMenu_mutex_unlock__ = null;
  6633.             }
  6634.             return this.showContextMenu47_(a);
  6635.  
  6636.           }
  6637.  
  6638.         }
  6639.  
  6640.         for (const tag of sTags) { // ##tag##
  6641.  
  6642.  
  6643.  
  6644.           (() => {
  6645.  
  6646.             const dummy = document.createElement(tag);
  6647.  
  6648.             const cProto = getProto(dummy);
  6649.             if (!cProto || !cProto.attached) {
  6650.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6651.               return;
  6652.             }
  6653.  
  6654.  
  6655.  
  6656.  
  6657.             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) {
  6658.  
  6659.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  6660.               cProto.showContextMenu37 = cProto.showContextMenu;
  6661.  
  6662.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  6663.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  6664.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  6665.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  6666.  
  6667.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  6668.  
  6669.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  6670.  
  6671.  
  6672.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  6673.  
  6674.  
  6675.  
  6676.             } else {
  6677.  
  6678.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  6679.  
  6680.             }
  6681.  
  6682.  
  6683.  
  6684.             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) {
  6685.  
  6686.  
  6687.               cProto.showContextMenu48 = cProto.showContextMenu;
  6688.  
  6689.  
  6690.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  6691.  
  6692.  
  6693.  
  6694.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6695.  
  6696.  
  6697.  
  6698.             } else {
  6699.  
  6700.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  6701.  
  6702.             }
  6703.  
  6704.  
  6705.  
  6706.  
  6707.  
  6708.             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) {
  6709.  
  6710.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  6711.               cProto.showContextMenu47 = cProto.showContextMenu;
  6712.  
  6713.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  6714.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  6715.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  6716.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  6717.  
  6718.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6719.  
  6720.  
  6721.  
  6722.             } else {
  6723.  
  6724.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  6725.  
  6726.             }
  6727.  
  6728.  
  6729.  
  6730.  
  6731.           })();
  6732.  
  6733.         }
  6734.  
  6735.  
  6736.  
  6737.         console.log("[End]");
  6738.  
  6739.         console.groupEnd();
  6740.  
  6741.       }).catch(console.warn);
  6742.  
  6743.  
  6744.  
  6745.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  6746.  
  6747.         mightFirstCheckOnYtInit();
  6748.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  6749.         console.log("[Begin]");
  6750.         (() => {
  6751.  
  6752.           const tag = "tp-yt-iron-dropdown";
  6753.           const dummy = document.createElement(tag);
  6754.  
  6755.           const cProto = getProto(dummy);
  6756.           if (!cProto || !cProto.attached) {
  6757.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6758.             return;
  6759.           }
  6760.  
  6761.  
  6762.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  6763.             cProto.__deraf_hn__ = function (sId, fn) {
  6764.               const rhKey = `_rafHandler_${sId}`;
  6765.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  6766.               if (m.has(fn)) return m.get(fn);
  6767.               const resFn = () => {
  6768.                 this.__rafs[sId] = null;
  6769.                 fn.call(this)
  6770.               };
  6771.               m.set(fn, resFn);
  6772.               m.set(resFn, resFn);
  6773.               return resFn;
  6774.             };
  6775.             cProto.__deraf34 = cProto.__deraf;
  6776.             cProto.__deraf = function (a, b) { // sId, fn
  6777.               let c = this.__rafs;
  6778.               null !== c[a] && cancelAnimationFrame(c[a]);
  6779.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  6780.             };
  6781.             console.log("USE_VANILLA_DEREF - OK");
  6782.           } else {
  6783.             console.log("USE_VANILLA_DEREF - NG");
  6784.           }
  6785.  
  6786.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  6787.             cProto.__deraf66 = cProto.__deraf;
  6788.             cProto.__deraf = function (sId, fn) {
  6789.               if (this.__byPassRAF__) {
  6790.                 Promise.resolve().then(() => {
  6791.                   fn.call(this);
  6792.                 });
  6793.               }
  6794.               let r = this.__deraf66.apply(this, arguments);
  6795.               return r;
  6796.             }
  6797.             console.log("FIX_DROPDOWN_DERAF - OK");
  6798.           } else {
  6799.             console.log("FIX_DROPDOWN_DERAF - NG");
  6800.           }
  6801.  
  6802.  
  6803.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  6804.  
  6805.             let lastClose = null;
  6806.             let lastOpen = null;
  6807.             let cid = 0;
  6808.  
  6809.             cProto.__mtChanged__ = function (b) {
  6810.  
  6811.               Promise.resolve().then(() => {
  6812.                 this._applyFocus();
  6813.               }).then(() => {
  6814.                 b ? this._renderOpened() : this._renderClosed();
  6815.               }).catch(console.warn);
  6816.  
  6817.             };
  6818.  
  6819.             const __moChanged__ = () => {
  6820.               if (!cid) return;
  6821.               // console.log(553, !!lastOpen, !!lastClose);
  6822.               cid = 0;
  6823.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  6824.                 lastOpen.__mtChanged__(1)
  6825.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  6826.                 lastClose.__mtChanged__(0);
  6827.               }
  6828.               lastOpen = null;
  6829.               lastClose = null;
  6830.             };
  6831.  
  6832.  
  6833.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  6834.               cProto._openedChanged66 = cProto._openedChanged;
  6835.               cProto._openedChanged = function () {
  6836.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  6837.                 this.__byPassRAF__ = true;
  6838.                 let r = this._openedChanged66.apply(this, arguments);
  6839.                 this.__byPassRAF__ = false;
  6840.                 return r;
  6841.               }
  6842.             }
  6843.  
  6844.             const pSetGet = (key, pdThis, pdBase) => {
  6845.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  6846.               return {
  6847.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  6848.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  6849.               };
  6850.             };
  6851.  
  6852.             cProto.__modifiedMenuPropsFn__ = function () {
  6853.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  6854.               const pdBase = Object.getOwnPropertyDescriptors(this)
  6855.  
  6856.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  6857.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  6858.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  6859.  
  6860.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  6861.                 console.warn('there is setter/getter for autoFitOnAttach');
  6862.                 return;
  6863.               }
  6864.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  6865.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  6866.                 return;
  6867.               }
  6868.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  6869.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  6870.                 return;
  6871.               }
  6872.  
  6873.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  6874.  
  6875.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  6876.  
  6877.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  6878.  
  6879.               Object.defineProperties(this, {
  6880.                 autoFitOnAttach: {
  6881.                   get() {
  6882.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6883.                     return autoFitOnAttach;
  6884.                   },
  6885.                   set(nv) {
  6886.                     autoFitOnAttach = nv;
  6887.                     return true;
  6888.                   },
  6889.                   enumerable: true,
  6890.                   configurable: true
  6891.                 }, expandSizingTargetForScrollbars: {
  6892.                   get() {
  6893.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6894.                     return expandSizingTargetForScrollbars;
  6895.                   },
  6896.                   set(nv) {
  6897.                     expandSizingTargetForScrollbars = nv;
  6898.                     return true;
  6899.                   },
  6900.                   enumerable: true,
  6901.                   configurable: true
  6902.                 }, allowOutsideScroll: {
  6903.                   get() {
  6904.                     if (this._modifiedMenuPropOn062__) return true;
  6905.                     return allowOutsideScroll;
  6906.                   },
  6907.                   set(nv) {
  6908.                     allowOutsideScroll = nv;
  6909.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  6910.                     return true;
  6911.                   },
  6912.                   enumerable: true,
  6913.                   configurable: true
  6914.                 }
  6915.               })
  6916.             };
  6917.  
  6918.             /*
  6919.                // ***** position() to be changed. *****
  6920.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  6921.  
  6922.                   overflow: visible !important;
  6923.                   min-width: max-content !important;
  6924.                   max-width: max-content !important;
  6925.                   max-height: max-content !important;
  6926.                   min-height: max-content !important;
  6927.                   white-space: nowrap;
  6928.               }
  6929.  
  6930.             */
  6931.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  6932.  
  6933.               let m34 = 0;
  6934.               cProto.__refitByPosition__ = function () {
  6935.                 m34++;
  6936.                 if (m34 <= 0) m34 = 0;
  6937.                 if (m34 !== 1) return;
  6938.                 const hostElement = this.hostElement || this;
  6939.                 if (document.visibilityState === 'visible') {
  6940.                   const sizingTarget = this.sizingTarget;
  6941.                   if (!sizingTarget) {
  6942.                     m34 = 0;
  6943.                     return;
  6944.                   }
  6945.  
  6946.                   /*
  6947.                   let useVisibilityCollapse = true;
  6948.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  6949.                     useVisibilityCollapse = false;
  6950.                   }
  6951.  
  6952.                   if (useVisibilityCollapse) {
  6953.                     hostElement.style.visibility = 'collapse';
  6954.                     sizingTarget.style.visibility = 'collapse';
  6955.                   } else {
  6956.                     hostElement.setAttribute('rNgzQ', '');
  6957.                     sizingTarget.setAttribute('rNgzQ', '');
  6958.                   }
  6959.                   */
  6960.                   hostElement.setAttribute('rNgzQ', '');
  6961.                   sizingTarget.setAttribute('rNgzQ', '');
  6962.  
  6963.                   const gn = () => {
  6964.                     /*
  6965.                     if (useVisibilityCollapse) {
  6966.                       hostElement.style.visibility = '';
  6967.                       sizingTarget.style.visibility = '';
  6968.                     } else {
  6969.                       hostElement.removeAttribute('rNgzQ');
  6970.                       sizingTarget.removeAttribute('rNgzQ');
  6971.                     }
  6972.                     */
  6973.                     hostElement.removeAttribute('rNgzQ');
  6974.                     sizingTarget.removeAttribute('rNgzQ');
  6975.                   }
  6976.  
  6977.                   const an = async () => {
  6978.                     while (m34 >= 1) {
  6979.                       await renderReadyPn(sizingTarget);
  6980.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  6981.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  6982.                       }
  6983.                       m34--;
  6984.                     }
  6985.                     m34 = 0;
  6986.                     Promise.resolve().then(gn);
  6987.                   }
  6988.                   setTimeout(an, 4); // wait those resizing function calls
  6989.  
  6990.  
  6991.                 } else {
  6992.                   m34 = 0;
  6993.                 }
  6994.               }
  6995.               cProto.position34 = cProto.position
  6996.               cProto.position = function () {
  6997.                 if (this._positionInitialize_) {
  6998.                   this._positionInitialize_ = 0;
  6999.                   this.__refitByPosition__();
  7000.                 }
  7001.                 let r = cProto.position34.apply(this, arguments);
  7002.                 return r;
  7003.               }
  7004.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  7005.  
  7006.             } else {
  7007.  
  7008.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  7009.  
  7010.             }
  7011.  
  7012.  
  7013.  
  7014.             cProto.__openedChanged = function () {
  7015.               this._positionInitialize_ = 1;
  7016.               // this.removeAttribute('horizontal-align')
  7017.               // this.removeAttribute('vertical-align')
  7018.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  7019.                 this.__menuTypeCheck__ = true;
  7020.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  7021.                   this._modifiedMenuPropOn062__ = false;
  7022.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7023.                   // this.autoFitOnAttach = true;
  7024.                   // this.expandSizingTargetForScrollbars = true;
  7025.                   // this.allowOutsideScroll = true;
  7026.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  7027.                   this.__modifiedMenuPropsFn__();
  7028.                   // this.constrain= function(){}
  7029.                   // this.position= function(){}
  7030.  
  7031.                   // this.autoFitOnAttach = true;
  7032.                   // this.expandSizingTargetForScrollbars = true;
  7033.                   // this.allowOutsideScroll = true;
  7034.                 }
  7035.               }
  7036.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  7037.                 let newValue = null;
  7038.                 const positionTarget = this.positionTarget;
  7039.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  7040.                   if (this._modifiedMenuPropOn062__ === false) {
  7041.                     newValue = true;
  7042.                   }
  7043.                 } else if (this._modifiedMenuPropOn062__ === true) {
  7044.                   newValue = false;
  7045.                 }
  7046.                 if (newValue !== null) {
  7047.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  7048.                   this._modifiedMenuPropOn062__ = newValue;
  7049.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  7050.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  7051.                 }
  7052.               }
  7053.  
  7054.               if (this.opened) {
  7055.  
  7056.                 Promise.resolve().then(() => {
  7057.  
  7058.                   this._prepareRenderOpened();
  7059.                 }).then(() => {
  7060.                   this._manager.addOverlay(this);
  7061.                   if (this._manager._overlays.length === 1) {
  7062.                     lastOpen = this;
  7063.                     lastClose = null;
  7064.                   } else {
  7065.                     return 1;
  7066.                   }
  7067.                   // if (cid) {
  7068.                   //   clearTimeout(cid);
  7069.                   //   cid = -1;
  7070.                   //   this.__moChanged__();
  7071.                   //   cid = 0;
  7072.                   // } else {
  7073.                   //   cid = -1;
  7074.                   //   this.__moChanged__();
  7075.                   //   cid = 0;
  7076.                   // }
  7077.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7078.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7079.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7080.                   cid = cid || requestAnimationFrame(__moChanged__);
  7081.                 }).then((r) => {
  7082.  
  7083.                   if (r) this.__mtChanged__(1);
  7084.                 }).catch(console.warn);
  7085.  
  7086.               } else {
  7087.                 Promise.resolve().then(() => {
  7088.                   this._manager.removeOverlay(this);
  7089.                   if (this._manager._overlays.length === 0) {
  7090.                     lastClose = this;
  7091.                     lastOpen = null;
  7092.                   } else {
  7093.                     return 1;
  7094.                   }
  7095.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7096.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7097.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7098.                   cid = cid || requestAnimationFrame(__moChanged__);
  7099.                 }).then((r) => {
  7100.                   if (r) this.__mtChanged__(0);
  7101.                 }).catch(console.warn);
  7102.  
  7103.               }
  7104.  
  7105.             }
  7106.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  7107.  
  7108.           } else {
  7109.  
  7110.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  7111.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  7112.  
  7113.           }
  7114.  
  7115.  
  7116.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  7117.  
  7118.             cProto.__openedChanged82 = cProto.__openedChanged;
  7119.  
  7120.  
  7121.             cProto.__openedChanged = function () {
  7122.  
  7123.               // currentMenuPivotWR = null;
  7124.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  7125.  
  7126.  
  7127.  
  7128.               // if (this.opened && this.positionTarget) {
  7129.  
  7130.               //   const positionTarget = this.positionTarget;
  7131.               //   console.log(1480, '__openedChanged.B', positionTarget)
  7132.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  7133.  
  7134.               // }
  7135.  
  7136.               const positionTarget = this.positionTarget;
  7137.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  7138.               return this.__openedChanged82.apply(this, arguments);
  7139.             }
  7140.           }
  7141.  
  7142.  
  7143.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  7144.  
  7145.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  7146.  
  7147.           //   cProto.__onCaptureScroll = function(a){
  7148.  
  7149.           //     const q = true;
  7150.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  7151.  
  7152.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  7153.           //       async function af() {
  7154.           //         this.__isAnimating && this._finishRenderOpened();
  7155.           //         if (!this.opened) return;
  7156.           //         this.__restoreScrollPosition();
  7157.           //         await new Promise(r => requestAnimationFrame(r));
  7158.           //         if (!this.opened) return;
  7159.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7160.           //         if (!this.opened) return;
  7161.           //         this.__restoreScrollPosition();
  7162.           //         await new Promise(r => requestAnimationFrame(r));
  7163.           //         if (!this.opened) return;
  7164.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7165.           //         if (!this.opened) return;
  7166.           //         this.opened && !this.__isAnimating && this.refit();
  7167.           //       }
  7168.           //       Promise.resolve().then(af);
  7169.  
  7170.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  7171.           //     }else{
  7172.  
  7173.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  7174.  
  7175.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  7176.           //     }
  7177.           //   }
  7178.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  7179.           // }else{
  7180.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  7181.  
  7182.           // }
  7183.  
  7184.  
  7185.         })();
  7186.  
  7187.         console.log("[End]");
  7188.  
  7189.         console.groupEnd();
  7190.  
  7191.       }).catch(console.warn);
  7192.  
  7193.  
  7194.  
  7195.  
  7196.  
  7197.  
  7198.  
  7199.  
  7200.       /*
  7201.  
  7202.  
  7203.  
  7204.  
  7205.  
  7206.           var FU = function() {
  7207.               var a = this;
  7208.               this.nextHandle_ = 1;
  7209.               this.clients_ = {};
  7210.               this.JSC$10323_callbacks_ = {};
  7211.               this.unsubscribeAsyncHandles_ = {};
  7212.               this.subscribe = vl(function(b, c, d) {
  7213.                   var e = Geb(b);
  7214.                   if (e in a.clients_)
  7215.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  7216.                   else {
  7217.                       a: {
  7218.                           var h = Geb(b), l;
  7219.                           for (l in a.unsubscribeAsyncHandles_) {
  7220.                               var m = a.clients_[l];
  7221.                               if (m instanceof KO) {
  7222.                                   delete a.clients_[l];
  7223.                                   delete a.JSC$10323_callbacks_[l];
  7224.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  7225.                                   delete a.unsubscribeAsyncHandles_[l];
  7226.                                   i6a(m);
  7227.                                   m.objectId_ = new FQa(h);
  7228.                                   m.register();
  7229.                                   d = m;
  7230.                                   break a
  7231.                               }
  7232.                           }
  7233.                           d.objectSource = b.invalidationId.objectSource;
  7234.                           d.objectId = h;
  7235.                           if (b = b.webAuthConfigurationData)
  7236.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  7237.                               b.pageId && (d.pageId = b.pageId);
  7238.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  7239.                           d.register()
  7240.                       }
  7241.                       a.clients_[e] = d;
  7242.                       a.JSC$10323_callbacks_[e] = {}
  7243.                   }
  7244.                   d = a.nextHandle_++;
  7245.                   a.JSC$10323_callbacks_[e][d] = c;
  7246.                   return d
  7247.               })
  7248.           };
  7249.           FU.prototype.unsubscribe = function(a, b) {
  7250.               var c = Geb(a);
  7251.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  7252.               !this.JSC$10323_callbacks_[c].length)) {
  7253.                   var d = this.clients_[c];
  7254.                   b = Jq.run(function() {
  7255.                       ei(d);
  7256.                       delete this.clients_[c];
  7257.                       delete this.unsubscribeAsyncHandles_[c]
  7258.                   }
  7259.                   .bind(this));
  7260.                   this.unsubscribeAsyncHandles_[c] = b
  7261.               }
  7262.           }
  7263.           ;
  7264.  
  7265.  
  7266.       */
  7267.  
  7268.  
  7269.  
  7270.  
  7271.       const onManagerFound = (dummyManager) => {
  7272.         if (!dummyManager || typeof dummyManager !== 'object') return;
  7273.  
  7274.         const mgrProto = dummyManager.constructor.prototype;
  7275.  
  7276.         let keyCallbackStore = '';
  7277.         for (const [key, v] of Object.entries(dummyManager)) {
  7278.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  7279.         }
  7280.  
  7281.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  7282.  
  7283.         if (mgrProto.unsubscribe16) return;
  7284.  
  7285.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  7286.  
  7287.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  7288.         console.log("[Begin]");
  7289.  
  7290.  
  7291.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  7292.         const isEmptyObject = ((obj) => (firstKey(obj) === null));
  7293.  
  7294.         const idMapper = new Map();
  7295.  
  7296.         const convertId = function (objectId) {
  7297.           if (!objectId || typeof objectId !== 'string') return null;
  7298.  
  7299.           let result = idMapper.get(objectId)
  7300.           if (result) return result;
  7301.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  7302.           idMapper.set(objectId, result)
  7303.           return result;
  7304.         }
  7305.  
  7306.  
  7307.         const rafHandleHolder = [];
  7308.  
  7309.         let pzw = 0;
  7310.         let lza = 0;
  7311.         const rafHandlerFn = () => {
  7312.           pzw = 0;
  7313.           if (rafHandleHolder.length === 1) {
  7314.             const f = rafHandleHolder[0];
  7315.             rafHandleHolder.length = 0;
  7316.             f();
  7317.           } else if (rafHandleHolder.length > 1) {
  7318.             const arr = rafHandleHolder.slice(0);
  7319.             rafHandleHolder.length = 0;
  7320.             for (const fn of arr) fn();
  7321.           }
  7322.         };
  7323.  
  7324.  
  7325.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  7326.  
  7327.           const checkIntegrityForSubscribe = (mgr) => {
  7328.             if (mgr
  7329.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  7330.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  7331.  
  7332.               const ns = new Set(Object.keys(mgr));
  7333.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  7334.  
  7335.               if (ns.size >= 6 && ms.size >= 4) {
  7336.                 // including 'subscribe18'
  7337.                 // 'unsubscribe16', 'subscribe19'
  7338.  
  7339.                 let r = 0;
  7340.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  7341.                   r += ns.has(k) ? 1 : 0;
  7342.                 }
  7343.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  7344.                   r += ms.has(k) ? 1 : 0;
  7345.                 }
  7346.                 if (r === 10) {
  7347.                   const isObject = (c) => (c || 0).constructor === Object;
  7348.  
  7349.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  7350.  
  7351.                     return true;
  7352.                   }
  7353.  
  7354.  
  7355.                 }
  7356.  
  7357.               }
  7358.  
  7359.  
  7360.             }
  7361.             return false;
  7362.           }
  7363.  
  7364.           mgrProto.subscribe19 = function (o, f, opts) {
  7365.  
  7366.             const ct_clients_ = this.clients_ || 0;
  7367.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  7368.  
  7369.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  7370.  
  7371.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7372.             if (!objectId) return this.subscribe18.apply(this, arguments);
  7373.             objectId = convertId(objectId);
  7374.  
  7375.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  7376.  
  7377.             if (ct_clients_[objectId]) {
  7378.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  7379.             }
  7380.  
  7381.             return this.subscribe18.apply(this, arguments);
  7382.           }
  7383.  
  7384.           mgrProto.unsubscribe = function (o, d) {
  7385.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  7386.               this.subscribe18 = this.subscribe;
  7387.               this.subscribe = this.subscribe19;
  7388.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  7389.             }
  7390.             const ct_clients_ = this.clients_;
  7391.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  7392.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  7393.  
  7394.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7395.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  7396.  
  7397.             objectId = convertId(objectId);
  7398.  
  7399.  
  7400.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  7401.  
  7402.             const callbacks = this[keyCallbackStore] || 0;
  7403.             const callbackObj = callbacks[objectId] || 0;
  7404.  
  7405.  
  7406.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  7407.               const w = ct_clients_[objectId];
  7408.               --lza;
  7409.               if (lza < -1e9) lza = -1;
  7410.               const qta = lza;
  7411.               rafHandleHolder.push(() => {
  7412.                 if (qta === ct_handles_[objectId]) {
  7413.                   const o = {
  7414.                     callbacks, callbackObj,
  7415.                     client: ct_clients_[objectId],
  7416.                     handle: ct_handles_[objectId]
  7417.                   };
  7418.                   let p = 0;
  7419.                   try {
  7420.                     if (ct_clients_[objectId] === w) {
  7421.                       w && "function" === typeof w.dispose && w.dispose();
  7422.                       delete ct_clients_[objectId];
  7423.                       delete ct_handles_[objectId];
  7424.                       p = 1;
  7425.                     } else {
  7426.                       // w && "function" === typeof w.dispose && w.dispose();
  7427.                       // delete ct_clients_[objectId];
  7428.                       // delete ct_handles_[objectId];
  7429.                       p = 2;
  7430.                     }
  7431.                   } catch (e) {
  7432.                     console.warn(e);
  7433.                   }
  7434.                   console.log(`unsubscribed: ${p}`, this, o);
  7435.                 }
  7436.               });
  7437.               ct_handles_[objectId] = qta;
  7438.               if (pzw === 0) {
  7439.                 pzw = requestAnimationFrame(rafHandlerFn);
  7440.               }
  7441.             }
  7442.           }
  7443.  
  7444.  
  7445.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  7446.  
  7447.         } else {
  7448.  
  7449.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  7450.         }
  7451.  
  7452.         console.log("[End]");
  7453.  
  7454.         console.groupEnd();
  7455.  
  7456.       }
  7457.  
  7458.  
  7459.  
  7460.       /*
  7461.  
  7462.  
  7463.               a.prototype.async = function(e, h) {
  7464.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  7465.               }
  7466.               ;
  7467.               a.prototype.cancelAsync = function(e) {
  7468.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  7469.               }
  7470.  
  7471.       */
  7472.  
  7473.  
  7474.  
  7475.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  7476.  
  7477.         let __dummyManager__ = null;
  7478.  
  7479.         mightFirstCheckOnYtInit();
  7480.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  7481.         console.log("[Begin]");
  7482.         (() => {
  7483.  
  7484.           const tag = "yt-invalidation-continuation"
  7485.           const dummy = document.createElement(tag);
  7486.  
  7487.           const cProto = getProto(dummy);
  7488.           if (!cProto || !cProto.attached) {
  7489.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7490.             return;
  7491.           }
  7492.  
  7493.           const dummyManager = (dummy.inst || dummy).manager_ || 0;
  7494.           __dummyManager__ = dummyManager;
  7495.  
  7496.           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) {
  7497.  
  7498.  
  7499.             const rafHub = new RAFHub();
  7500.  
  7501.             rafHub.keepRAF = true;
  7502.             cProto.async71 = cProto.async;
  7503.             cProto.cancelAsync71 = cProto.cancelAsync;
  7504.  
  7505.             // mostly for subscription timeoutMs 10000ms
  7506.             let mcw = 1; // 1, 3, 5, ...
  7507.             let arr = new Map();
  7508.  
  7509.             let __asyncInited__ = 0;
  7510.             let __timeoutStartId__ = null;
  7511.             const __asyncInit__ = () => {
  7512.  
  7513.               if (__asyncInited__) return;
  7514.               __asyncInited__ = 1;
  7515.  
  7516.               __timeoutStartId__ = setTimeout(() => { });
  7517.               mcw = __timeoutStartId__ * 2 + 1;
  7518.  
  7519.               setInterval(() => {
  7520.  
  7521.                 if (!arr.length) return;
  7522.  
  7523.                 const p = Date.now();
  7524.                 let deleteKeys = [];
  7525.                 arr.forEach((entry, key) => {
  7526.  
  7527.  
  7528.                   if (entry.cid === -1) {
  7529.                     entry.cid = -2;
  7530.                   } else if (entry.cid === -2) {
  7531.  
  7532.                     let offset = p - entry.add
  7533.                     if (offset < 0) offset = 0;
  7534.                     let delay2 = entry.delay - offset;
  7535.                     if (delay2 < 0) delay2 = 0;
  7536.                     entry.cid = setTimeout(entry.q(), delay2);
  7537.                     entry.q = null;
  7538.  
  7539.                   } else if (entry.add + entry.delay < p) {
  7540.                     deleteKeys.push(key);
  7541.  
  7542.                   }
  7543.  
  7544.                 })
  7545.  
  7546.                 for (const key of deleteKeys) arr.delete(key);
  7547.  
  7548.               }, 2000)
  7549.  
  7550.             }
  7551.  
  7552.  
  7553.  
  7554.  
  7555.             cProto.async = function (e, h) {
  7556.  
  7557.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  7558.  
  7559.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  7560.  
  7561.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  7562.  
  7563.  
  7564.               if (!this.__asyncInited__) {
  7565.                 this.__asyncInited__ = 1;
  7566.                 __asyncInit__();
  7567.               }
  7568.               mcw += 2; // 2K+3, 2K+4, ...
  7569.               if (mcw > 1e9) mcw = mcw % 1e4;
  7570.               const cid = mcw;
  7571.               const q = () => {
  7572.                 return () => {
  7573.                   console.log('async h > 8000');
  7574.                   e.call(this);
  7575.                 }
  7576.               }
  7577.               // setTimeout(q, delay)
  7578.               arr.set(cid, {
  7579.                 cid: -1, // -1 -> -2 -> cid
  7580.                 add: Date.now(),
  7581.                 q,
  7582.                 delay: h
  7583.               });
  7584.               // console.log('cid-async', cid)
  7585.               return cid;
  7586.  
  7587.             }
  7588.  
  7589.  
  7590.             cProto.cancelAsync = function (e) {
  7591.  
  7592.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  7593.  
  7594.               // console.log('cid-unasync', e)
  7595.  
  7596.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  7597.  
  7598.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  7599.  
  7600.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  7601.  
  7602.                 if (!arr.has(e)) return; // duplciated cancel
  7603.  
  7604.                 const entry = arr.get(e);
  7605.                 if (entry.cid < 0) {
  7606.                   entry.cid = 0;
  7607.                   arr.delete(e);
  7608.                 } else {
  7609.                   clearTimeout(entry.cid); // cid >= 1
  7610.                   entry.cid = 0;
  7611.                   arr.delete(e);
  7612.                 }
  7613.  
  7614.               } else {
  7615.  
  7616.                 return this.cancelAsync71(e);
  7617.  
  7618.               }
  7619.  
  7620.             }
  7621.  
  7622.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  7623.  
  7624.           } else {
  7625.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  7626.  
  7627.           }
  7628.  
  7629.         })();
  7630.  
  7631.         console.log("[End]");
  7632.  
  7633.         console.groupEnd();
  7634.  
  7635.  
  7636.  
  7637.         onManagerFound(__dummyManager__);
  7638.  
  7639.       }).catch(console.warn);
  7640.  
  7641.  
  7642.  
  7643.  
  7644.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  7645.  
  7646.  
  7647.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  7648.  
  7649.  
  7650.           mightFirstCheckOnYtInit();
  7651.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  7652.           console.log("[Begin]");
  7653.           (() => {
  7654.  
  7655.             const tag = "yt-live-interactivity-component-background"
  7656.             const dummy = document.createElement(tag);
  7657.  
  7658.             const cProto = getProto(dummy);
  7659.             if (!cProto || !cProto.attached) {
  7660.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7661.               return;
  7662.             }
  7663.  
  7664.  
  7665.             cProto.__toStopAfterRun__ = function (hostElement) {
  7666.               let mo = new MutationObserver(() => {
  7667.                 mo.disconnect();
  7668.                 mo.takeRecords();
  7669.                 mo = null;
  7670.                 this.lottieAnimation && this.lottieAnimation.stop(); // primary
  7671.                 foregroundPromiseFn().then(() => { // if the lottieAnimation is started with rAf triggering
  7672.                   this.lottieAnimation && this.lottieAnimation.stop(); // fallback
  7673.                 });
  7674.               });
  7675.               mo.observe(hostElement, { subtree: true, childList: true });
  7676.             }
  7677.  
  7678.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  7679.  
  7680.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  7681.               cProto.maybeLoadAnimationBackground = function () {
  7682.                 let toRun = true;
  7683.                 let stopAfterRun = false;
  7684.                 if (!this.__bypassDisableAnimationBackground__) {
  7685.                   let doFix = false;
  7686.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  7687.                     if (!this.lottieAnimation) {
  7688.                       doFix = true;
  7689.                     }
  7690.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  7691.                     doFix = true;
  7692.                   }
  7693.                   if (doFix) {
  7694.                     if (this.useAnimationBackground === true) {
  7695.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7696.                     }
  7697.                     toRun = true;
  7698.                     stopAfterRun = true;
  7699.                   }
  7700.                 }
  7701.                 if (toRun) {
  7702.                   if (stopAfterRun && (this.hostElement instanceof HTMLElement)) {
  7703.                     this.__toStopAfterRun__(this.hostElement); // primary
  7704.                   }
  7705.                   const r = this.maybeLoadAnimationBackground77.apply(this, arguments);
  7706.                   if (stopAfterRun && this.lottieAnimation) {
  7707.                     this.lottieAnimation.stop(); // fallback if no mutation
  7708.                   }
  7709.                   return r;
  7710.                 }
  7711.               }
  7712.  
  7713.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  7714.  
  7715.             } else {
  7716.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  7717.  
  7718.             }
  7719.  
  7720.           })();
  7721.  
  7722.           console.log("[End]");
  7723.  
  7724.           console.groupEnd();
  7725.  
  7726.  
  7727.         }).catch(console.warn);
  7728.  
  7729.       }
  7730.  
  7731.  
  7732.     }
  7733.  
  7734.  
  7735.  
  7736.  
  7737.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  7738.  
  7739.     const fixJsonParse = () => {
  7740.  
  7741.       let p1 = window.onerror;
  7742.  
  7743.       try {
  7744.         JSON.parse("{}");
  7745.       } catch (e) {
  7746.         console.warn(e);
  7747.       }
  7748.  
  7749.       let p2 = window.onerror;
  7750.  
  7751.       if (p1 !== p2) {
  7752.  
  7753.  
  7754.         console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | JS Engine Issue Found"}`,
  7755.           "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  7756.           "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  7757.         );
  7758.  
  7759.         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");
  7760.  
  7761.         console.groupEnd();
  7762.  
  7763.       }
  7764.  
  7765.     }
  7766.  
  7767.     if (CHECK_JSONPRUNE) {
  7768.       promiseForCustomYtElementsReady.then(fixJsonParse);
  7769.     }
  7770.  
  7771.   });
  7772.  
  7773.  
  7774.  
  7775. })({ IntersectionObserver });