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YouTube 超快聊天

YouTube直播聊天的终极性能提升

目前为 2023-09-05 提交的版本。查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.58.2
  4. // @license             MIT
  5. // @name:ja             YouTube スーパーファーストチャット
  6. // @name:zh-TW          YouTube 超快聊天
  7. // @name:zh-CN          YouTube 超快聊天
  8. // @icon                https://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 = 0;         // 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.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  165.   /*
  166.  
  167.     ### Time Approach
  168.  
  169.     // all below values can make the time interval > 250ms
  170.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  171.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  172.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  173.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  174.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  175.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  176.  
  177.     ### Pixel Check
  178.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  179.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  180.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  181.  
  182.     ### Example - totalDuration = 280000
  183.     totalDuration 280000
  184.     stepInterval 0.5
  185.     numOfSteps = Math.round(100 / stepInterval) = 200
  186.     time interval = 280000 / 200 = 1400ms <acceptable>
  187.  
  188.     ### Example - totalDuration = 18000
  189.     totalDuration 18000
  190.     stepInterval 5
  191.     numOfSteps = Math.round(100 / stepInterval) = 20
  192.     time interval = 18000 / 20 = 900ms <acceptable>
  193.  
  194.     ### Example - totalDuration = 5000
  195.     totalDuration 5000
  196.     stepInterval 5
  197.     numOfSteps = Math.round(100 / stepInterval) = 20
  198.     time interval = 5000 / 20 = 250ms <threshold value>
  199.  
  200.     ### Example - totalDuration = 3600
  201.     totalDuration 3600
  202.     stepInterval 5
  203.     numOfSteps = Math.round(100 / stepInterval) = 20
  204.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  205.  
  206.   */
  207.  
  208.   // =======================================================================================================
  209.  
  210.   // AUTOMAICALLY DETERMINED
  211.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  212.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  213.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  214.   let runTickerClassName = 'run-ticker';
  215.  
  216.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  217.   /*
  218.     WebP: data:image/webp;base64,UklGRjAB
  219.     PNG: data:image/png;base64,iVBORw0KGg==
  220.     JPEG: data:image/jpeg;base64,/9j/4AA=
  221.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  222.     BMP: data:image/bmp;base64,Qk1oAAAA
  223.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  224.  
  225.     WebP: data:image/webp;base64,AAAAAAA=
  226.     PNG:  data:image/png;base64,AAAAAAA=
  227.     JPEG: data:image/jpeg;base64,AAAAAAA=
  228.     GIF:  data:image/gif;base64,AAAAAAA=
  229.     BMP:  data:image/bmp;base64,AAAAAAA=
  230.  
  231.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  232.  
  233.  
  234.   */
  235.  
  236.   // image sizing code
  237.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  238.  
  239.  
  240.   //   function KC(a, b, c, d) {
  241.   //     d = void 0 === d ? "width" : d;
  242.   //     if (!a || !a.length)
  243.   //         return null;
  244.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  245.   //         var e = window.devicePixelRatio;
  246.   //         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"));
  247.   //         HC = e
  248.   //     } else
  249.   //         HC || (HC = window.devicePixelRatio);
  250.   //     e = HC;
  251.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  252.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  253.   //         return a[0].url || null;
  254.   //     e = a.length;
  255.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  256.   //         return a[e - 1].url || null;
  257.   //     if (c)
  258.   //         for (var h = 0; h < e; h++)
  259.   //             if (0 <= a[h].url.indexOf(c))
  260.   //                 return a[h].url || null;
  261.   //     for (c = 0; c < e; c++)
  262.   //         if (a[c][d] >= b)
  263.   //             return a[c].url || null;
  264.   //     for (b = e - 1; 0 < b; b--)
  265.   //         if (a[b][d])
  266.   //             return a[b].url || null;
  267.   //     return a[0].url || null
  268.   // }
  269.  
  270.   const { IntersectionObserver } = __CONTEXT__;
  271.  
  272.   /** @type {globalThis.PromiseConstructor} */
  273.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  274.  
  275.   // let jsonParseFix = null;
  276.  
  277.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  278.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  279.  
  280.   // necessity of cssText3_smooth_transform_position to be checked.
  281.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  282.  
  283.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  284.         position: static !important;
  285.     }
  286.  
  287.   `: '';
  288.  
  289.   // fallback if dummy style fn fails
  290.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  291.  
  292.     /* optional */
  293.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  294.         height: auto !important;
  295.         min-height: unset !important;
  296.     }
  297.  
  298.     #items.style-scope.yt-live-chat-item-list-renderer {
  299.         transform: translateY(0px) !important;
  300.     }
  301.  
  302.     /* optional */
  303.  
  304.   `: '';
  305.  
  306.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  307.  
  308.     /* ------------------------------------------------------------------------------------------------------------- */
  309.  
  310.     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 {
  311.         contain: layout style;
  312.     }
  313.  
  314.     #items.style-scope.yt-live-chat-item-list-renderer {
  315.         contain: layout paint style;
  316.     }
  317.  
  318.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  319.         contain: style;
  320.     }
  321.  
  322.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  323.         contain: size style;
  324.     }
  325.  
  326.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  327.         contain: size layout paint style;
  328.     }
  329.  
  330.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  331.         contain: layout paint style;
  332.     }
  333.  
  334.     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 {
  335.         contain: layout style;
  336.     }
  337.  
  338.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  339.         contain: layout paint style;
  340.     }
  341.  
  342.     /* ------------------------------------------------------------------------------------------------------------- */
  343.  
  344.   ` : '';
  345.  
  346.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  347.  
  348.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  349.         top: 4px;
  350.         transition-property: top;
  351.         bottom: unset;
  352.     }
  353.  
  354.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  355.         top: -42px;
  356.     }
  357.  
  358.   `: '';
  359.  
  360.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  361.  
  362.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  363.         contain: layout style;
  364.     }
  365.  
  366.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  367.         overflow: visible;
  368.     }
  369.  
  370.   `: '';
  371.  
  372.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  373.  
  374.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  375.         --yt-live-chat-action-panel-top-border: none;
  376.     }
  377.  
  378.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  379.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  380.     }
  381.  
  382.     html #panel-pages.yt-live-chat-renderer {
  383.         border-top: 0;
  384.         border-bottom: 0;
  385.     }
  386.  
  387.   `: '';
  388.  
  389.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  390.  
  391.     img,
  392.     yt-img-shadow[height][width],
  393.     yt-img-shadow {
  394.         content-visibility: visible !important;
  395.     }
  396.  
  397.   `  : '';
  398.  
  399.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  400.  
  401.     /* remove YouTube constant will-change */
  402.     /* constant value will slow down the performance; default auto */
  403.  
  404.     /* www-player.css */
  405.     html .ytp-contextmenu,
  406.     html .ytp-settings-menu {
  407.         will-change: unset;
  408.     }
  409.  
  410.     /* frequently matched elements */
  411.     html .fill.yt-interaction,
  412.     html .stroke.yt-interaction,
  413.     html .yt-spec-touch-feedback-shape__fill,
  414.     html .yt-spec-touch-feedback-shape__stroke {
  415.         will-change: unset;
  416.     }
  417.  
  418.     /* live_chat_polymer.js */
  419.     /*
  420.     html .toggle-button.tp-yt-paper-toggle-button,
  421.     html #primaryProgress.tp-yt-paper-progress,
  422.     html #secondaryProgress.tp-yt-paper-progress,
  423.     html #onRadio.tp-yt-paper-radio-button,
  424.     html .fill.yt-interaction,
  425.     html .stroke.yt-interaction,
  426.     html .yt-spec-touch-feedback-shape__fill,
  427.     html .yt-spec-touch-feedback-shape__stroke {
  428.         will-change: unset;
  429.     }
  430.     */
  431.  
  432.     /* desktop_polymer_enable_wil_icons.js */
  433.     /* html .fill.yt-interaction,
  434.     html .stroke.yt-interaction, */
  435.     html tp-yt-app-header::before,
  436.     html tp-yt-iron-list,
  437.     html #items.tp-yt-iron-list > *,
  438.     html #onRadio.tp-yt-paper-radio-button,
  439.     html .toggle-button.tp-yt-paper-toggle-button,
  440.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  441.     html #items.ytd-post-multi-image-renderer,
  442.     html #items.ytd-horizontal-card-list-renderer,
  443.     html #items.yt-horizontal-list-renderer,
  444.     html #left-arrow.yt-horizontal-list-renderer,
  445.     html #right-arrow.yt-horizontal-list-renderer,
  446.     html #items.ytd-video-description-infocards-section-renderer,
  447.     html #items.ytd-video-description-music-section-renderer,
  448.     html #chips.ytd-feed-filter-chip-bar-renderer,
  449.     html #chips.yt-chip-cloud-renderer,
  450.     html #items.ytd-merch-shelf-renderer,
  451.     html #items.ytd-product-details-image-carousel-renderer,
  452.     html ytd-video-preview,
  453.     html #player-container.ytd-video-preview,
  454.     html #primaryProgress.tp-yt-paper-progress,
  455.     html #secondaryProgress.tp-yt-paper-progress,
  456.     html ytd-miniplayer[enabled] /* ,
  457.     html .yt-spec-touch-feedback-shape__fill,
  458.     html .yt-spec-touch-feedback-shape__stroke */ {
  459.         will-change: unset;
  460.     }
  461.  
  462.     /* other */
  463.     .ytp-videowall-still-info-content[class],
  464.     .ytp-suggestion-image[class] {
  465.         will-change: unset !important;
  466.     }
  467.  
  468.   ` : '';
  469.  
  470.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  471.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  472.  
  473.     elzm-fonts {
  474.         visibility: collapse;
  475.         position: fixed;
  476.         top: -10px;
  477.         left: -10px;
  478.         font-size: 10pt;
  479.         line-height: 100%;
  480.         width: 100px;
  481.         height: 100px;
  482.         transform: scale(0.1);
  483.         transform: scale(0.01);
  484.         transform: scale(0.001);
  485.         transform-origin: 0 0;
  486.         contain: strict;
  487.         display: block;
  488.  
  489.         pointer-events: none !important;
  490.         user-select: none !important;
  491.     }
  492.  
  493.     elzm-fonts[id]#elzm-fonts-yk75g {
  494.         user-select: none !important;
  495.         pointer-events: none !important;
  496.     }
  497.  
  498.     elzm-font {
  499.         visibility: collapse;
  500.         position: absolute;
  501.         line-height: 100%;
  502.         width: 100px;
  503.         height: 100px;
  504.         contain: strict;
  505.         display: block;
  506.  
  507.         user-select: none !important;
  508.         pointer-events: none !important;
  509.     }
  510.  
  511.     elzm-font::before {
  512.         visibility: collapse;
  513.         position: absolute;
  514.         line-height: 100%;
  515.         width: 100px;
  516.         height: 100px;
  517.         contain: strict;
  518.         display: block;
  519.  
  520.         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';
  521.  
  522.         user-select: none !important;
  523.         pointer-events: none !important;
  524.     }
  525.  
  526.   `: '';
  527.  
  528.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  529.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  530.         -webkit-backdrop-filter: none;
  531.         backdrop-filter: none;
  532.     }
  533.   `: '';
  534.  
  535.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  536.  
  537.     @keyframes blinker-miuzp {
  538.         0%, 60%, 100% {
  539.             opacity: 1;
  540.         }
  541.         30% {
  542.             opacity: 0.6;
  543.         }
  544.     }
  545.  
  546.     yt-icon-button#show-more.has-new-messages-miuzp {
  547.         animation: blinker-miuzp 1.74s linear infinite;
  548.     }
  549.  
  550.   `: '';
  551.  
  552.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  553.  
  554.     yt-live-chat-paid-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  555.       pointer-events: none !important;
  556.     }
  557.  
  558.     yt-live-chat-membership-item-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  559.       pointer-events: none !important;
  560.     }
  561.  
  562.     yt-live-chat-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  563.       pointer-events: none !important;
  564.     }
  565.  
  566.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  567.       pointer-events: none !important;
  568.     }
  569.  
  570.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  571.       pointer-events: none !important;
  572.     }
  573.  
  574.   `: '';
  575.  
  576.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  577.  
  578.  
  579.     tp-yt-paper-tooltip[role="tooltip"] {
  580.       box-sizing: content-box !important;
  581.       margin: 0px !important;
  582.       padding: 0px !important;
  583.       contain: none !important;
  584.     }
  585.  
  586.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  587.       box-sizing: content-box !important;
  588.       display: inline-block;
  589.       contain: none !important;
  590.     }
  591.  
  592.  
  593.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  594.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  595.       width: max-content;
  596.       text-overflow: ellipsis;
  597.       overflow: hidden;
  598.       white-space: nowrap;
  599.     }
  600.  
  601.  
  602.   `: '';
  603.  
  604.  
  605.   const cssText13_no_text_select_when_menu_visible = `
  606.     [menu-visible] {
  607.       --sfc47-text-select: none;
  608.     }
  609.     [menu-visible] #header[id][class],
  610.     [menu-visible] #content[id][class],
  611.     [menu-visible] #header[id][class] *,
  612.     [menu-visible] #content[id][class] * {
  613.       user-select: var(--sfc47-text-select) !important;
  614.     }
  615.     [menu-visible] #menu {
  616.       --sfc47-text-select: inherit;
  617.     }
  618.   `
  619.  
  620.  
  621.   const addCss = () => `
  622.  
  623.     @property --ticker-rtime {
  624.       syntax: "<percentage>";
  625.       inherits: false;
  626.       initial-value: 0%;
  627.     }
  628.  
  629.     /*
  630.     .run-ticker {
  631.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  632.     }
  633.  
  634.     .run-ticker-test {
  635.       background: #00000001;
  636.     }
  637.  
  638.     .run-ticker-forced,
  639.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  640.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  641.     {
  642.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  643.     }
  644.     */
  645.  
  646.     .run-ticker {
  647.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  648.     }
  649.  
  650.     .run-ticker,
  651.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  652.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  653.     {
  654.       background: var(--ticker-bg) !important;
  655.     }
  656.  
  657.     yt-live-chat-ticker-dummy777-item-renderer {
  658.       background: #00000001;
  659.     }
  660.  
  661.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  662.       position: fixed !important;
  663.       top: -1000px !important;
  664.       left: -1000px !important;
  665.       font-size: 1px !important;
  666.       color: transparent !important;
  667.       pointer-events: none !important;
  668.       z-index: -1 !important;
  669.       contain: strict !important;
  670.       box-sizing: border-box !important;
  671.       pointer-events: none !important;
  672.       user-select: none !important;
  673.       max-width: 1px !important;
  674.       max-height: 1px !important;
  675.       overflow: hidden !important;
  676.       visibility: collapse !important;
  677.       display: none !important;
  678.     }
  679.  
  680.     yt-live-chat-ticker-dummy777-item-renderer #container {
  681.       background: inherit;
  682.     }
  683.  
  684.  
  685.     ${cssText8_fonts_pre_render}
  686.  
  687.     ${cssText9_no_backdrop_filter_when_menu_shown}
  688.  
  689.     @supports (contain: layout paint style) {
  690.  
  691.       ${cssText5}
  692.  
  693.     }
  694.  
  695.     @supports (color: var(--general)) {
  696.  
  697.       html {
  698.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  699.       }
  700.  
  701.       ${cssText3_smooth_transform_position}
  702.  
  703.       ${cssText7c_will_change_unset}
  704.  
  705.       ${cssText7b_content_visibility_unset}
  706.  
  707.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  708.           overflow-y: scroll;
  709.           padding-right: 0;
  710.       }
  711.  
  712.       ${cssText4_smooth_transform_forced_props}
  713.  
  714.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  715.           pointer-events: none !important;
  716.       }
  717.  
  718.       #continuations, #continuations * {
  719.           contain: strict;
  720.           position: fixed;
  721.           top: 2px;
  722.           height: 1px;
  723.           width: 2px;
  724.           height: 1px;
  725.           visibility: collapse;
  726.       }
  727.  
  728.       ${cssText6b_show_more_button}
  729.  
  730.       ${cssText6d_input_panel_border}
  731.  
  732.       ${cssText6c_input_panel_overflow}
  733.  
  734.     }
  735.  
  736.  
  737.     @supports (overflow-anchor: auto) {
  738.  
  739.       .no-anchor * {
  740.           overflow-anchor: none;
  741.       }
  742.       .no-anchor > item-anchor {
  743.           overflow-anchor: auto;
  744.       }
  745.  
  746.       item-anchor {
  747.  
  748.           height:1px;
  749.           width: 100%;
  750.           transform: scaleY(0.00001);
  751.           transform-origin:0 0;
  752.           contain: strict;
  753.           opacity:0;
  754.           display:flex;
  755.           position:relative;
  756.           flex-shrink:0;
  757.           flex-grow:0;
  758.           margin-bottom:0;
  759.           overflow:hidden;
  760.           box-sizing:border-box;
  761.           visibility: visible;
  762.           content-visibility: visible;
  763.           contain-intrinsic-size: auto 1px;
  764.           pointer-events:none !important;
  765.  
  766.       }
  767.  
  768.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  769.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  770.       }
  771.  
  772.       html item-anchor {
  773.  
  774.           height: 1px;
  775.           width: 1px;
  776.           top: auto;
  777.           left: auto;
  778.           right: auto;
  779.           bottom: auto;
  780.           transform: translateY(-1px);
  781.           position: absolute;
  782.           z-index: -1;
  783.  
  784.       }
  785.  
  786.     }
  787.  
  788.     @supports (color: var(--pre-rendering)) {
  789.  
  790.       @keyframes dontRenderAnimation {
  791.           0% {
  792.               background-position-x: 3px;
  793.           }
  794.           100% {
  795.               background-position-x: 4px;
  796.           }
  797.       }
  798.  
  799.       .dont-render[class] {
  800.           /* visibility: collapse !important; */
  801.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  802.  
  803.           transform: scale(0.01) !important;
  804.           transform: scale(0.00001) !important;
  805.           transform: scale(0.0000001) !important;
  806.           transform-origin: 0 0 !important;
  807.           z-index: -1 !important;
  808.           contain: strict !important;
  809.           box-sizing: border-box !important;
  810.  
  811.           height: 1px !important;
  812.           height: 0.1px !important;
  813.           height: 0.01px !important;
  814.           height: 0.0001px !important;
  815.           height: 0.000001px !important;
  816.  
  817.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  818.  
  819.           pointer-events: none !important;
  820.           user-select: none !important;
  821.  
  822.       }
  823.  
  824.       #sk35z {
  825.         display: block !important;
  826.  
  827.         visibility: collapse !important;
  828.  
  829.         transform: scale(0.01) !important;
  830.         transform: scale(0.00001) !important;
  831.         transform: scale(0.0000001) !important;
  832.         transform-origin: 0 0 !important;
  833.         z-index: -1 !important;
  834.         contain: strict !important;
  835.         box-sizing: border-box !important;
  836.  
  837.         height: 1px !important;
  838.         height: 0.1px !important;
  839.         height: 0.01px !important;
  840.         height: 0.0001px !important;
  841.         height: 0.000001px !important;
  842.  
  843.         position: absolute !important;
  844.         top: -1000px !important;
  845.         left: -1000px !important;
  846.  
  847.       }
  848.  
  849.     }
  850.  
  851.     [rNgzQ] {
  852.       opacity: 0 !important;
  853.       pointer-events: none !important;
  854.     }
  855.  
  856.  
  857.     ${cssText10_show_more_blinker}
  858.  
  859.     ${cssText11_entire_message_clickable}
  860.  
  861.     ${cssText12_nowrap_tooltip}
  862.  
  863.     ${cssText13_no_text_select_when_menu_visible}
  864.  
  865.   `;
  866.  
  867.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  868.  
  869.   // Create a unique key for the script and check if it is already running
  870.   const hkey_script = 'mchbwnoasqph';
  871.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  872.   win[hkey_script] = true;
  873.  
  874.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  875.  
  876.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  877.     if (te4 < 3) {
  878.       setTimeout(() => { });
  879.       setTimeout(() => { });
  880.     }
  881.  
  882.   }
  883.  
  884.  
  885.   function deepCopy(obj, skipKeys) {
  886.     skipKeys = skipKeys || [];
  887.     if (!obj || typeof obj !== 'object') return obj;
  888.     if (Array.isArray(obj)) {
  889.       return obj.map(item => deepCopy(item, skipKeys));
  890.     }
  891.     const copy = {};
  892.     for (let key in obj) {
  893.       if (!skipKeys.includes(key)) {
  894.         copy[key] = deepCopy(obj[key], skipKeys);
  895.       }
  896.     }
  897.     return copy;
  898.   }
  899.  
  900.   class Mutex {
  901.  
  902.     constructor() {
  903.       this.p = Promise.resolve()
  904.     }
  905.  
  906.     /**
  907.      *  @param {(lockResolve: () => void)} f
  908.      */
  909.     lockWith(f) {
  910.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  911.     }
  912.  
  913.   }
  914.  
  915.   const PromiseExternal = ((resolve_, reject_) => {
  916.     const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  917.     return class PromiseExternal extends Promise {
  918.       constructor(cb = h) {
  919.         super(cb);
  920.         if (cb === h) {
  921.           /** @type {(value: any) => void} */
  922.           this.resolve = resolve_;
  923.           /** @type {(reason?: any) => void} */
  924.           this.reject = reject_;
  925.         }
  926.       }
  927.     };
  928.   })();
  929.  
  930.   /** @type {typeof PromiseExternal.prototype | null} */
  931.   let relayPromise = null;
  932.  
  933.  
  934.   /** @type {typeof PromiseExternal.prototype | null} */
  935.   let onPlayStateChangePromise = null;
  936.  
  937.  
  938.  
  939.   let playEventsStack = Promise.resolve();
  940.  
  941.   function dr(s) {
  942.     // reserved for future use
  943.     return s;
  944.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  945.   }
  946.  
  947.   const getProto = (element) => {
  948.     if (element) {
  949.       const cnt = element.inst || element;
  950.       return cnt.constructor.prototype || null;
  951.     }
  952.     return null;
  953.   }
  954.  
  955.   const assertor = (f) => f() || console.assert(false, f + "");
  956.  
  957.   const fnIntegrity = (f, d) => {
  958.     if (!f || typeof f !== 'function') {
  959.       console.warn('f is not a function', f);
  960.       return;
  961.     }
  962.     let p = f + "", s = 0, j = -1, w = 0;
  963.     for (let i = 0, l = p.length; i < l; i++) {
  964.       const t = p[i];
  965.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  966.         if (j < i - 1) w++;
  967.         j = i;
  968.       } else {
  969.         s++;
  970.       }
  971.     }
  972.     let itz = `${f.length}.${s}.${w}`;
  973.     if (!d) {
  974.       return itz;
  975.     } else {
  976.       return itz === d;
  977.     }
  978.   }
  979.  
  980.  
  981.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  982.  
  983.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  984.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  985.   if (!isContainSupport) {
  986.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  987.   } else {
  988.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  989.   }
  990.  
  991.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  992.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  993.   if (!isOverflowAnchorSupport) {
  994.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  995.   } else {
  996.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  997.   }
  998.  
  999.   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.
  1000.  
  1001.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  1002.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  1003.  
  1004.   let hasTimerModified = null;
  1005.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  1006.  
  1007.   const fxOperator = (proto, propertyName) => {
  1008.     let propertyDescriptorGetter = null;
  1009.     try {
  1010.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  1011.     } catch (e) { }
  1012.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  1013.       try {
  1014.  
  1015.         return propertyDescriptorGetter.call(dr(e));
  1016.       } catch (e) { }
  1017.       return e[propertyName];
  1018.     } : (e) => e[propertyName];
  1019.   };
  1020.  
  1021.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  1022.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  1023.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  1024.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  1025.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  1026.  
  1027.   const groupCollapsed = (text1, text2) => {
  1028.  
  1029.     console.groupCollapsed(`%c${text1}%c${text2}`,
  1030.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1031.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1032.     );
  1033.   }
  1034.  
  1035.  
  1036.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  1037.   const onRegistryReady = (callback) => {
  1038.     if (typeof customElements === 'undefined') {
  1039.       if (!('__CE_registry' in document)) {
  1040.         // https://github.com/webcomponents/polyfills/
  1041.         Object.defineProperty(document, '__CE_registry', {
  1042.           get() {
  1043.             // return undefined
  1044.           },
  1045.           set(nv) {
  1046.             if (typeof nv == 'object') {
  1047.               delete this.__CE_registry;
  1048.               this.__CE_registry = nv;
  1049.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  1050.             }
  1051.             return true;
  1052.           },
  1053.           enumerable: false,
  1054.           configurable: true
  1055.         })
  1056.       }
  1057.       let eventHandler = (evt) => {
  1058.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1059.         const f = callback;
  1060.         callback = null;
  1061.         eventHandler = null;
  1062.         f();
  1063.       };
  1064.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1065.     } else {
  1066.       callback();
  1067.     }
  1068.   };
  1069.  
  1070.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1071.  
  1072.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1073.  
  1074.     return new Promise(resolve => {
  1075.  
  1076.       let ro = new ResizeObserver(entries => {
  1077.         if (entries && entries.length >= 1) {
  1078.           resolve();
  1079.           ro.disconnect();
  1080.           ro = null;
  1081.         }
  1082.       });
  1083.       ro.observe(sizingTarget);
  1084.  
  1085.  
  1086.  
  1087.     });
  1088.  
  1089.   } : (sizingTarget) => {
  1090.  
  1091.  
  1092.     return new Promise(resolve => {
  1093.  
  1094.       let io = new IntersectionObserver(entries => {
  1095.         if (entries && entries.length >= 1) {
  1096.           resolve();
  1097.           io.disconnect();
  1098.           io = null;
  1099.         }
  1100.       });
  1101.       io.observe(sizingTarget);
  1102.  
  1103.  
  1104.  
  1105.     });
  1106.  
  1107.   };
  1108.  
  1109.   /* globals WeakRef:false */
  1110.  
  1111.   /** @type {(o: Object | null) => WeakRef | null} */
  1112.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1113.  
  1114.   /** @type {(wr: Object | null) => Object | null} */
  1115.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1116.  
  1117.   const { addCssManaged } = (() => {
  1118.  
  1119.     const addFontPreRendering = () => {
  1120.  
  1121.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1122.  
  1123.       let efsContainer = document.createElement('elzm-fonts');
  1124.       efsContainer.id = 'elzm-fonts-yk75g'
  1125.  
  1126.       const arr = [];
  1127.       let p = document.createElement('elzm-font');
  1128.       arr.push(p);
  1129.  
  1130.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1131.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1132.  
  1133.           p = document.createElement('elzm-font');
  1134.           p.style.fontWeight = size;
  1135.           arr.push(p);
  1136.         }
  1137.       }
  1138.  
  1139.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1140.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1141.  
  1142.           p = document.createElement('elzm-font');
  1143.           p.style.fontFamily = 'Roboto';
  1144.           p.style.fontWeight = size;
  1145.           arr.push(p);
  1146.         }
  1147.       }
  1148.  
  1149.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1150.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1151.  
  1152.           p = document.createElement('elzm-font');
  1153.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1154.           p.style.fontWeight = size;
  1155.           arr.push(p);
  1156.         }
  1157.       }
  1158.  
  1159.  
  1160.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1161.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1162.  
  1163.           p = document.createElement('elzm-font');
  1164.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1165.           p.style.fontWeight = size;
  1166.           arr.push(p);
  1167.         }
  1168.       }
  1169.  
  1170.  
  1171.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1172.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1173.  
  1174.           p = document.createElement('elzm-font');
  1175.           p.style.fontFamily = 'sans-serif';
  1176.           p.style.fontWeight = size;
  1177.           arr.push(p);
  1178.         }
  1179.       }
  1180.  
  1181.       console.log('number of elzm-font elements', arr.length);
  1182.  
  1183.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1184.  
  1185.       (document.body || document.documentElement).appendChild(efsContainer);
  1186.  
  1187.  
  1188.       console.log('elzm-font elements have been added to the page for rendering.');
  1189.  
  1190.       console.groupEnd();
  1191.  
  1192.     }
  1193.  
  1194.     let isCssAdded = false;
  1195.  
  1196.     function addCssElement() {
  1197.       let s = document.createElement('style');
  1198.       s.id = 'ewRvC';
  1199.       return s;
  1200.     }
  1201.  
  1202.     const addCssManaged = () => {
  1203.       if (!isCssAdded && document.documentElement && document.head) {
  1204.         isCssAdded = true;
  1205.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1206.         if (ENABLE_FONT_PRE_RENDERING) {
  1207.           Promise.resolve().then(addFontPreRendering)
  1208.         }
  1209.       }
  1210.     }
  1211.  
  1212.     return { addCssManaged };
  1213.   })();
  1214.  
  1215.  
  1216.   const { setupStyle } = (() => {
  1217.  
  1218.     const sp7 = Symbol();
  1219.  
  1220.     const proxyHelperFn = (dummy) => ({
  1221.  
  1222.       get(target, prop) {
  1223.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1224.       },
  1225.       set(target, prop, value) {
  1226.         if (!(prop in dummy)) {
  1227.           target[prop] = value;
  1228.         }
  1229.         return true;
  1230.       },
  1231.       has(target, prop) {
  1232.         return (prop in target);
  1233.       },
  1234.       deleteProperty(target, prop) {
  1235.         return true;
  1236.       },
  1237.       ownKeys(target) {
  1238.         return Object.keys(target);
  1239.       },
  1240.       defineProperty(target, key, descriptor) {
  1241.         return Object.defineProperty(target, key, descriptor);
  1242.       },
  1243.       getOwnPropertyDescriptor(target, key) {
  1244.         return Object.getOwnPropertyDescriptor(target, key);
  1245.       },
  1246.  
  1247.     });
  1248.  
  1249.     const setupStyle = (m1, m2) => {
  1250.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1251.  
  1252.       const dummy1v = {
  1253.         transform: '',
  1254.         height: '',
  1255.         minHeight: '',
  1256.         paddingBottom: '',
  1257.         paddingTop: ''
  1258.       };
  1259.  
  1260.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1261.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1262.         dummy1v[k] = dummyStyleFn(k);
  1263.       }
  1264.  
  1265.       const dummy1p = proxyHelperFn(dummy1v);
  1266.       const sp1v = new Proxy(m1.style, dummy1p);
  1267.       const sp2v = new Proxy(m2.style, dummy1p);
  1268.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1269.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1270.       m1.removeAttribute("style");
  1271.       m2.removeAttribute("style");
  1272.  
  1273.     }
  1274.  
  1275.     return { setupStyle };
  1276.  
  1277.   })();
  1278.  
  1279.  
  1280.  
  1281.   function setThumbnails(config) {
  1282.  
  1283.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1284.  
  1285.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1286.  
  1287.  
  1288.       if (thumbnails && thumbnails.length > 0) {
  1289.         if (flag0 > 0 && thumbnails.length > 1) {
  1290.           let pSize = 0;
  1291.           let newThumbnails = [];
  1292.           for (const thumbnail of thumbnails) {
  1293.             if (!thumbnail || !thumbnail.url) continue;
  1294.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1295.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1296.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1297.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1298.               newThumbnails.push(thumbnail);
  1299.               if (imageLinks) imageLinks.add(thumbnail.url);
  1300.             }
  1301.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1302.               pSize = thumbnail.width;
  1303.             }
  1304.           }
  1305.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1306.             baseObject.thumbnails = newThumbnails;
  1307.           } else {
  1308.             newThumbnails.length = 0;
  1309.           }
  1310.           newThumbnails = null;
  1311.         } else {
  1312.           for (const thumbnail of thumbnails) {
  1313.             if (thumbnail && thumbnail.url) {
  1314.               if (imageLinks) imageLinks.add(thumbnail.url);
  1315.             }
  1316.           }
  1317.         }
  1318.       }
  1319.  
  1320.     }
  1321.   }
  1322.  
  1323.   function fixLiveChatItem(item, imageLinks) {
  1324.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1325.     if (liveChatTextMessageRenderer) {
  1326.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1327.       if (messageRuns && messageRuns.length > 0) {
  1328.         for (const run of messageRuns) {
  1329.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1330.           setThumbnails({
  1331.             baseObject: emojiImage,
  1332.             thumbnails: emojiImage.thumbnails,
  1333.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1334.             imageLinks
  1335.           });
  1336.         }
  1337.       }
  1338.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1339.       setThumbnails({
  1340.         baseObject: authorPhoto,
  1341.         thumbnails: authorPhoto.thumbnails,
  1342.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1343.         imageLinks
  1344.       });
  1345.     }
  1346.   }
  1347.  
  1348.  
  1349.   const flagsFnOnInterval = (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) ? (() => {
  1350.  
  1351.     const flags = () => {
  1352.       try {
  1353.         return ytcfg.data_.EXPERIMENT_FLAGS;
  1354.       } catch (e) { }
  1355.       return null;
  1356.     };
  1357.  
  1358.     const flagsForced = () => {
  1359.       try {
  1360.         return ytcfg.data_.EXPERIMENTS_FORCED_FLAGS;
  1361.       } catch (e) { }
  1362.       return null;
  1363.     };
  1364.  
  1365.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1366.  
  1367.       if (!EXPERIMENT_FLAGS) return;
  1368.  
  1369.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1370.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1371.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1372.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1373.         }
  1374.       }
  1375.  
  1376.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1377.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1378.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1379.       }
  1380.  
  1381.     };
  1382.  
  1383.     const uf = (EXPERIMENT_FLAGS) => {
  1384.       if (EXPERIMENT_FLAGS === undefined) EXPERIMENT_FLAGS = flags();
  1385.       if (EXPERIMENT_FLAGS) {
  1386.         flagsFn(EXPERIMENT_FLAGS);
  1387.         flagsFn(flagsForced());
  1388.       }
  1389.     }
  1390.  
  1391.     uf();
  1392.  
  1393.     const flagsFnOnInterval = (setInterval, clearInterval) => {
  1394.  
  1395.       uf();
  1396.       let cidFlags = 0;
  1397.       let kd = 0;
  1398.       new Promise(flagResolve => {
  1399.  
  1400.         const flagTimer = () => {
  1401.           const EXPERIMENT_FLAGS = flags();
  1402.           if (!EXPERIMENT_FLAGS) return;
  1403.           uf(EXPERIMENT_FLAGS);
  1404.           if (kd > 0) return;
  1405.           kd = 1;
  1406.           const delay1000 = new Promise(resolve => setTimeout(resolve, 1000));
  1407.           const moDeferred = new Promise(resolve => {
  1408.             let mo = new MutationObserver(() => {
  1409.               if (mo) {
  1410.                 mo.disconnect();
  1411.                 mo.takeRecords();
  1412.                 mo = null;
  1413.                 resolve();
  1414.               }
  1415.             });
  1416.             mo.observe(document, { subtree: true, childList: true });
  1417.           });
  1418.           Promise.race([delay1000, moDeferred]).then(flagResolve);
  1419.         };
  1420.  
  1421.         uf();
  1422.         cidFlags = setInterval(flagTimer, 1);
  1423.       }).then(() => {
  1424.         if (cidFlags > 0) clearInterval(cidFlags);
  1425.         cidFlags = 0;
  1426.         uf();
  1427.       });
  1428.  
  1429.     }
  1430.  
  1431.     return flagsFnOnInterval;
  1432.  
  1433.   })() : null;
  1434.  
  1435.   let kptPF = null;
  1436.   const emojiPrefetched = new Set();
  1437.   const authorPhotoPrefetched = new Set();
  1438.  
  1439.   function linker(link, rel, href, _as) {
  1440.     return new Promise(resolve => {
  1441.       if (!link) link = document.createElement('link');
  1442.       link.rel = rel;
  1443.       if (_as) link.setAttribute('as', _as);
  1444.       link.onload = function () {
  1445.         resolve({
  1446.           link: this,
  1447.           success: true
  1448.         })
  1449.         this.remove();
  1450.       };
  1451.       link.onerror = function () {
  1452.         resolve({
  1453.           link: this,
  1454.           success: false
  1455.         });
  1456.         this.remove();
  1457.       };
  1458.       link.href = href;
  1459.       document.head.appendChild(link);
  1460.       link = null;
  1461.     });
  1462.   }
  1463.  
  1464.  
  1465.  
  1466.   const cleanContext = async (win) => {
  1467.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1468.     try {
  1469.       let mx = 16; // MAX TRIAL
  1470.       const frameId = 'vanillajs-iframe-v1';
  1471.       /** @type {HTMLIFrameElement | null} */
  1472.       let frame = document.getElementById(frameId);
  1473.       let removeIframeFn = null;
  1474.       if (!frame) {
  1475.         frame = document.createElement('iframe');
  1476.         frame.id = 'vanillajs-iframe-v1';
  1477.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1478.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1479.         n.appendChild(frame);
  1480.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1481.         const root = document.documentElement;
  1482.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1483.         removeIframeFn = (setTimeout) => {
  1484.           const removeIframeOnDocumentReady = (e) => {
  1485.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1486.             win = null;
  1487.             setTimeout(() => {
  1488.               n.remove();
  1489.               n = null;
  1490.             }, 200);
  1491.           }
  1492.           if (document.readyState !== 'loading') {
  1493.             removeIframeOnDocumentReady();
  1494.           } else {
  1495.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1496.           }
  1497.         }
  1498.       }
  1499.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1500.       const fc = frame.contentWindow;
  1501.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1502.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1503.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1504.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1505.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1506.  
  1507.       /** @type {HTMLElement} */
  1508.       const HTMLElementProto = fc.HTMLElement.prototype;
  1509.       /** @type {EventTarget} */
  1510.       const EventTargetProto = fc.EventTarget.prototype;
  1511.       // jsonParseFix = {
  1512.       //   _JSON: fc.JSON, _parse: fc.JSON.parse
  1513.       // }
  1514.       return {
  1515.         ...res,
  1516.         animate: HTMLElementProto.animate,
  1517.         addEventListener: EventTargetProto.addEventListener,
  1518.         removeEventListener: EventTargetProto.removeEventListener
  1519.       };
  1520.     } catch (e) {
  1521.       console.warn(e);
  1522.       return null;
  1523.     }
  1524.   };
  1525.  
  1526.   cleanContext(win).then(__CONTEXT__ => {
  1527.     if (!__CONTEXT__) return null;
  1528.  
  1529.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1530.  
  1531.  
  1532.     let rafPromiseForTickers = null;
  1533.     const getRafPromiseForTickers = () => (rafPromiseForTickers = (rafPromiseForTickers || new Promise(resolve => {
  1534.       requestAnimationFrame(() => {
  1535.         rafPromiseForTickers = null;
  1536.         resolve();
  1537.       });
  1538.     })));
  1539.  
  1540.     let playerState = null;
  1541.     let _playerState = null;
  1542.     let lastPlayerProgress = null;
  1543.     let relayCount = 0;
  1544.     let playerEventsByIframeRelay = false;
  1545.     let isPlayProgressTriggered = false;
  1546.     let waitForInitialDataCompletion = 0;
  1547.  
  1548.  
  1549.  
  1550.     let aeConstructor = null;
  1551.  
  1552.     // << __openedChanged82 >>
  1553.     let currentMenuPivotWR = null;
  1554.  
  1555.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1556.     const beforeParticipantsMap = new WeakMap();
  1557.     // << end >>
  1558.  
  1559.  
  1560.  
  1561.     // << if onRegistryReadyForDOMOperations >>
  1562.  
  1563.     let dt0 = Date.now() - 2000;
  1564.     const dateNow = () => Date.now() - dt0;
  1565.     // let lastScroll = 0;
  1566.     // let lastLShow = 0;
  1567.     let lastWheel = 0;
  1568.     let lastMouseDown = 0;
  1569.     let lastMouseUp = 0;
  1570.     let currentMouseDown = false;
  1571.     let lastTouchDown = 0;
  1572.     let lastTouchUp = 0;
  1573.     let currentTouchDown = false;
  1574.     let lastUserInteraction = 0;
  1575.  
  1576.     let scrollChatFn = null;
  1577.  
  1578.     let skipDontRender = true; // true first; false by flushActiveItems_
  1579.     let allowDontRender = null;
  1580.  
  1581.     // ---- #items mutation ----
  1582.     let sk35zResolveFn = null;
  1583.     let firstList = true;
  1584.  
  1585.     // << end >>
  1586.  
  1587.     class RAFHub {
  1588.       constructor() {
  1589.         /** @type {number} */
  1590.         this.startAt = 8170;
  1591.         /** @type {number} */
  1592.         this.counter = 0;
  1593.         /** @type {number} */
  1594.         this.rid = 0;
  1595.         /** @type {Map<number, FrameRequestCallback>} */
  1596.         this.funcs = new Map();
  1597.         const funcs = this.funcs;
  1598.         /** @type {FrameRequestCallback} */
  1599.         this.bCallback = this.mCallback.bind(this);
  1600.         this.pClear = () => funcs.clear();
  1601.         this.keepRAF = false;
  1602.       }
  1603.       /** @param {DOMHighResTimeStamp} highResTime */
  1604.       mCallback(highResTime) {
  1605.         this.rid = 0;
  1606.         Promise.resolve().then(this.pClear);
  1607.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1608.       }
  1609.       /** @param {FrameRequestCallback} f */
  1610.       request(f) {
  1611.         if (this.counter > 1e9) this.counter = 9;
  1612.         let cid = this.startAt + (++this.counter);
  1613.         this.funcs.set(cid, f);
  1614.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1615.         return cid;
  1616.       }
  1617.       /** @param {number} cid */
  1618.       cancel(cid) {
  1619.         cid = +cid;
  1620.         if (cid > 0) {
  1621.           if (cid <= this.startAt) {
  1622.             return cancelAnimationFrame(cid);
  1623.           }
  1624.           if (this.rid > 0) {
  1625.             this.funcs.delete(cid);
  1626.             if (this.funcs.size === 0 && !this.keepRAF) {
  1627.               cancelAnimationFrame(this.rid);
  1628.               this.rid = 0;
  1629.             }
  1630.           }
  1631.         }
  1632.       }
  1633.     }
  1634.  
  1635.     function basePrefetching() {
  1636.  
  1637.       new Promise(resolve => {
  1638.  
  1639.         if (document.readyState !== 'loading') {
  1640.           resolve();
  1641.         } else {
  1642.           win.addEventListener("DOMContentLoaded", resolve, false);
  1643.         }
  1644.  
  1645.       }).then(() => {
  1646.         const hostL1 = [
  1647.           'https://www.youtube.com', 'https://googlevideo.com',
  1648.           'https://googleapis.com', 'https://accounts.youtube.com',
  1649.           'https://www.gstatic.com', 'https://ggpht.com',
  1650.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1651.         ];
  1652.  
  1653.         const hostL2 = [
  1654.           'https://youtube.com',
  1655.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1656.         ];
  1657.  
  1658.         let link = null;
  1659.  
  1660.         function kn() {
  1661.  
  1662.           link = document.createElement('link');
  1663.           if (link.relList && link.relList.supports) {
  1664.             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)
  1665.           } else {
  1666.             kptPF = 0;
  1667.           }
  1668.  
  1669.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1670.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1671.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1672.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1673.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1674.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1675.           console.groupEnd();
  1676.  
  1677.         }
  1678.  
  1679.         for (const h of hostL1) {
  1680.  
  1681.           if (kptPF === null) kn();
  1682.           if (ENABLE_BASE_PREFETCHING) {
  1683.             // if (kptPF & 1) {
  1684.             //   linker(link, 'dns-prefetch', h);
  1685.             //   link = null;
  1686.             // }
  1687.             if (kptPF & 2) {
  1688.               linker(link, 'preconnect', h);
  1689.               link = null;
  1690.             }
  1691.           }
  1692.         }
  1693.  
  1694.         for (const h of hostL2) {
  1695.           if (kptPF === null) kn();
  1696.           if (ENABLE_BASE_PREFETCHING) {
  1697.             if (kptPF & 1) {
  1698.               linker(link, 'dns-prefetch', h);
  1699.               link = null;
  1700.             }
  1701.           }
  1702.         }
  1703.  
  1704.       })
  1705.  
  1706.  
  1707.     }
  1708.  
  1709.     if (flagsFnOnInterval) flagsFnOnInterval(setInterval, clearInterval);
  1710.  
  1711.     if (DO_LINK_PREFETCH) basePrefetching();
  1712.  
  1713.     const { notifyPath7081 } = (() => {
  1714.       // DO_PARTICIPANT_LIST_HACKS
  1715.  
  1716.       const mutexParticipants = new Mutex();
  1717.  
  1718.       let uvid = 0;
  1719.       let r95dm = 0;
  1720.       let c95dm = -1;
  1721.  
  1722.       const foundMap = (base, content) => {
  1723.         /*
  1724.           let lastSearch = 0;
  1725.           let founds = base.map(baseEntry => {
  1726.             let search = content.indexOf(baseEntry, lastSearch);
  1727.             if (search < 0) return false;
  1728.             lastSearch = search + 1;
  1729.             return true;
  1730.           });
  1731.           return founds;
  1732.         */
  1733.         const contentSet = new Set(content);
  1734.         return base.map(baseEntry => contentSet.has(baseEntry));
  1735.  
  1736.       }
  1737.  
  1738.  
  1739.  
  1740.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1741.  
  1742.         const handler1 = {
  1743.           get(target, prop, receiver) {
  1744.             if (prop === 'object') {
  1745.               return participants; // avoid memory leakage
  1746.             }
  1747.             if (prop === 'type') {
  1748.               return 'splice';
  1749.             }
  1750.             return target[prop];
  1751.           }
  1752.         };
  1753.         const releaser = () => {
  1754.           participants = null;
  1755.         }
  1756.  
  1757.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1758.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1759.  
  1760.         let indexSplices = [];
  1761.         let contentUpdates = [];
  1762.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1763.           if (beforeParticipants[i] === participants[j]) {
  1764.             i++; j++;
  1765.           } else if (idsBefore[i] === idsAfter[j]) {
  1766.             // content changed
  1767.             contentUpdates.push({ indexI: i, indexJ: j })
  1768.             i++; j++;
  1769.           } else {
  1770.             let addedCount = 0;
  1771.             for (let q = j; q < foundsForAfter.length; q++) {
  1772.               if (foundsForAfter[q] === false) addedCount++;
  1773.               else break;
  1774.             }
  1775.             let removedCount = 0;
  1776.             for (let q = i; q < foundsForBefore.length; q++) {
  1777.               if (foundsForBefore[q] === false) removedCount++;
  1778.               else break;
  1779.             }
  1780.             if (!addedCount && !removedCount) {
  1781.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1782.             }
  1783.             indexSplices.push(new Proxy({
  1784.               index: j,
  1785.               addedCount: addedCount,
  1786.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1787.             }, handler1));
  1788.             i += removedCount;
  1789.             j += addedCount;
  1790.           }
  1791.         }
  1792.         foundsForBefore = null;
  1793.         foundsForAfter = null;
  1794.         idsBefore = null;
  1795.         idsAfter = null;
  1796.         beforeParticipants = null;
  1797.         return { indexSplices, contentUpdates, releaser };
  1798.  
  1799.       }
  1800.  
  1801.       /*
  1802.  
  1803.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1804.  
  1805.       VM63631:1 Error
  1806.       at customElements.get.notifyPath (<anonymous>:1:122)
  1807.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1808.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1809.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1810.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1811.       at ju (live_chat_polymer.js:1674:217)
  1812.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1813.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1814.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1815.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1816.  
  1817.       */
  1818.  
  1819.       function convertToIds(participants) {
  1820.         return participants.map(participant => {
  1821.           if (!participant || typeof participant !== 'object') {
  1822.             console.warn('Error(0xFA41): convertToIds', participant);
  1823.             return participant; // just in case
  1824.           }
  1825.           let keys = Object.keys(participant);
  1826.           // liveChatTextMessageRenderer
  1827.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1828.           // liveChatPaidMessageRenderer
  1829.           /*
  1830.  
  1831.             'yt-live-chat-participant-renderer' utilizes the following:
  1832.             authorName.simpleText: string
  1833.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1834.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1835.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1836.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1837.  
  1838.           */
  1839.           if (keys.length !== 1) {
  1840.             console.warn('Error(0xFA42): convertToIds', participant);
  1841.             return participant; // just in case
  1842.           }
  1843.           let key = keys[0];
  1844.           let renderer = (participant[key] || 0);
  1845.           let authorName = (renderer.authorName || 0);
  1846.           let text = `${authorName.simpleText || authorName.text}`
  1847.           let res = participant; // fallback if it is not a vaild entry
  1848.           if (typeof text !== 'string') {
  1849.             console.warn('Error(0xFA53): convertToIds', participant);
  1850.           } else {
  1851.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1852.             if (text.length > 1) res = text;
  1853.           }
  1854.           return res;
  1855.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1856.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1857.         });
  1858.       }
  1859.  
  1860.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1861.         // just update when content is changed.
  1862.         if (p1.authorName !== p2.authorName) return true;
  1863.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1864.         if (p1.authorBadges !== p2.authorBadges) return true;
  1865.         return false;
  1866.       } : (p1, p2) => {
  1867.         // keep integrity all the time.
  1868.         return p1 !== p2; // always true
  1869.       }
  1870.  
  1871.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1872.  
  1873.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1874.           if (path !== "participantsManager.participants") {
  1875.             return this.__notifyPath5036__.apply(this, arguments);
  1876.           }
  1877.           if (c95dm === r95dm) return;
  1878.         } else {
  1879.           const stack = new Error().stack;
  1880.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1881.             return this.__notifyPath5036__.apply(this, arguments);
  1882.           }
  1883.         }
  1884.  
  1885.         if (uvid > 1e8) uvid = uvid % 100;
  1886.         let tid = ++uvid;
  1887.  
  1888.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  1889.         mutexParticipants.lockWith(lockResolve => {
  1890.  
  1891.           const participants00 = cnt.participantsManager.participants;
  1892.  
  1893.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1894.             lockResolve();
  1895.             return;
  1896.           }
  1897.  
  1898.           let doUpdate = false;
  1899.  
  1900.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1901.  
  1902.             if (!participants00.r94dm) {
  1903.               participants00.r94dm = 1;
  1904.               if (++r95dm > 1e9) r95dm = 9;
  1905.               participants00.push = function () {
  1906.                 if (++r95dm > 1e9) r95dm = 9;
  1907.                 return Array.prototype.push.apply(this, arguments);
  1908.               }
  1909.               participants00.pop = function () {
  1910.                 if (++r95dm > 1e9) r95dm = 9;
  1911.                 return Array.prototype.pop.apply(this, arguments);
  1912.               }
  1913.               participants00.shift = function () {
  1914.                 if (++r95dm > 1e9) r95dm = 9;
  1915.                 return Array.prototype.shift.apply(this, arguments);
  1916.               }
  1917.               participants00.unshift = function () {
  1918.                 if (++r95dm > 1e9) r95dm = 9;
  1919.                 return Array.prototype.unshift.apply(this, arguments);
  1920.               }
  1921.               participants00.splice = function () {
  1922.                 if (++r95dm > 1e9) r95dm = 9;
  1923.                 return Array.prototype.splice.apply(this, arguments);
  1924.               }
  1925.               participants00.sort = function () {
  1926.                 if (++r95dm > 1e9) r95dm = 9;
  1927.                 return Array.prototype.sort.apply(this, arguments);
  1928.               }
  1929.               participants00.reverse = function () {
  1930.                 if (++r95dm > 1e9) r95dm = 9;
  1931.                 return Array.prototype.reverse.apply(this, arguments);
  1932.               }
  1933.             }
  1934.  
  1935.             if (c95dm !== r95dm) {
  1936.               c95dm = r95dm;
  1937.               doUpdate = true;
  1938.             }
  1939.  
  1940.           } else {
  1941.             doUpdate = true;
  1942.           }
  1943.  
  1944.           if (!doUpdate) {
  1945.             lockResolve();
  1946.             return;
  1947.           }
  1948.  
  1949.           const participants = participants00.slice(0);
  1950.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  1951.           beforeParticipantsMap.set(cnt, participants);
  1952.  
  1953.           const resPromise = (async () => {
  1954.  
  1955.             if (beforeParticipants.length === 0) {
  1956.               // not error
  1957.               return 0;
  1958.             }
  1959.  
  1960.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  1961.  
  1962.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  1963.             if (beforeParticipants.length !== countOfElements) {
  1964.               // there is somewrong for the cache. - sometimes happen
  1965.               return 0;
  1966.             }
  1967.  
  1968.             const idsBefore = convertToIds(beforeParticipants);
  1969.             const idsAfter = convertToIds(participants);
  1970.  
  1971.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  1972.  
  1973.             let res = 1; // default 1 for no update
  1974.  
  1975.             if (indexSplices.length >= 1) {
  1976.  
  1977.  
  1978.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  1979.               // let p1 = indexSplices[0].removed;
  1980.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  1981.  
  1982.               /* folllow
  1983.                   a.notifyPath(c + ".splices", d);
  1984.                   a.notifyPath(c + ".length", b.length);
  1985.               */
  1986.               // stampDomArraySplices_
  1987.  
  1988.  
  1989.               await new Promise(resolve => {
  1990.                 cnt.resolveForDOMRendering781 = resolve;
  1991.  
  1992.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  1993.                   indexSplices
  1994.                 });
  1995.                 indexSplices = null;
  1996.                 releaser();
  1997.                 releaser = null;
  1998.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  1999.                   participants.length
  2000.                 );
  2001.  
  2002.               });
  2003.  
  2004.               await Promise.resolve(0); // play safe for the change of 'length'
  2005.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  2006.  
  2007.               let wrongSize = participants.length !== countOfElements
  2008.               if (wrongSize) {
  2009.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  2010.                 return 0;
  2011.               }
  2012.  
  2013.               res = 2 | 4;
  2014.  
  2015.             } else {
  2016.  
  2017.               indexSplices = null;
  2018.               releaser();
  2019.               releaser = null;
  2020.  
  2021.               if (participants.length !== countOfElements) {
  2022.                 // other unhandled cases
  2023.                 return 0;
  2024.               }
  2025.  
  2026.             }
  2027.  
  2028.             // participants.length === countOfElements before contentUpdates
  2029.             if (contentUpdates.length >= 1) {
  2030.               for (const contentUpdate of contentUpdates) {
  2031.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  2032.                 if (isChanged) {
  2033.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  2034.                   res |= 4 | 8;
  2035.                 }
  2036.               }
  2037.             }
  2038.             contentUpdates = null;
  2039.  
  2040.             return res;
  2041.  
  2042.  
  2043.           })();
  2044.  
  2045.  
  2046.           resPromise.then(resValue => {
  2047.  
  2048.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  2049.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  2050.             if (resValue === 0) {
  2051.               new Promise(resolve => {
  2052.                 cnt.resolveForDOMRendering781 = resolve;
  2053.                 isLogRequired && console.log("Full Refresh begins");
  2054.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  2055.               }).then(() => {
  2056.                 isLogRequired && console.log("Full Refresh ends");
  2057.                 console.groupEnd();
  2058.               }).then(lockResolve);
  2059.               return;
  2060.             }
  2061.  
  2062.             const delayLockResolve = (resValue & 4) === 4;
  2063.  
  2064.             if (delayLockResolve) {
  2065.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  2066.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  2067.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  2068.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  2069.               isLogRequired && console.groupEnd();
  2070.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2071.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2072.               requestAnimationFrame(lockResolve);
  2073.             } else {
  2074.               lockResolve();
  2075.             }
  2076.  
  2077.           });
  2078.  
  2079.         });
  2080.  
  2081.       }
  2082.  
  2083.       return { notifyPath7081 };
  2084.  
  2085.     })();
  2086.  
  2087.     const whenDefinedMultiple = async (tags) => {
  2088.  
  2089.       const sTags = [...new Set(tags)];
  2090.       const len = sTags.length;
  2091.  
  2092.       const pTags = new Array(len);
  2093.       for (let i = 0; i < len; i++) {
  2094.         pTags[i] = customElements.whenDefined(sTags[i]);
  2095.       }
  2096.  
  2097.       await Promise.all(pTags);
  2098.       pTags.length = 0;
  2099.  
  2100.       return sTags;
  2101.  
  2102.     }
  2103.  
  2104.     const onRegistryReadyForDataManipulation = () => {
  2105.  
  2106.       function dummy5035(a, b, c) { }
  2107.       function dummy411(a, b, c) { }
  2108.  
  2109.  
  2110.  
  2111.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2112.  
  2113.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2114.  
  2115.         const tag = "yt-live-chat-participant-list-renderer";
  2116.         const cProto = getProto(document.createElement(tag));
  2117.         if (!cProto || typeof cProto.attached !== 'function') {
  2118.           // for _registered, proto.attached shall exist when the element is defined.
  2119.           // for controller extraction, attached shall exist when instance creates.
  2120.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2121.           return;
  2122.         }
  2123.  
  2124.  
  2125.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2126.  
  2127.         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'];
  2128.         const fgs = {};
  2129.         for (const key of fgsArr) fgs[key] = undefined;
  2130.  
  2131.         try {
  2132.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2133.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2134.         } catch (e) { }
  2135.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2136.  
  2137.         const canDoReplacement = (() => {
  2138.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2139.             console.warn('YouTube Live Chat Tamer is running.');
  2140.             return;
  2141.           }
  2142.  
  2143.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2144.             console.warn('YouTube Live Chat Tamer is running.');
  2145.             return;
  2146.           }
  2147.  
  2148.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2149.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2150.  
  2151.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2152.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2153.             return;
  2154.           }
  2155.  
  2156.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2157.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2158.             return;
  2159.           }
  2160.  
  2161.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2162.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2163.             return;
  2164.           }
  2165.           return true;
  2166.         })();
  2167.  
  2168.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2169.  
  2170.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2171.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2172.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2173.           const s = fiRSCB.split('.');
  2174.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2175.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2176.           } else {
  2177.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2178.           }
  2179.         } else {
  2180.           console.log("flushRenderStamperComponentBindings_ - not found");
  2181.         }
  2182.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2183.  
  2184.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2185.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2186.           cProto.flushRenderStamperComponentBindings_ = function () {
  2187.             // console.log('flushRenderStamperComponentBindings_')
  2188.             this.flushRenderStamperComponentBindings66_();
  2189.             if (this.resolveForDOMRendering781) {
  2190.               this.resolveForDOMRendering781();
  2191.               this.resolveForDOMRendering781 = null;
  2192.             }
  2193.           };
  2194.         }
  2195.  
  2196.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2197.           const container = ((this || 0).$ || 0).participants;
  2198.           if (!container) return 0;
  2199.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2200.         }
  2201.  
  2202.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2203.  
  2204.         cProto.__attached412__ = cProto.attached;
  2205.         const fpPList = function (hostElement) {
  2206.           const cnt = hostElement.inst || hostElement;
  2207.           if (beforeParticipantsMap.has(cnt)) return;
  2208.           hostElement.classList.add('n9fJ3');
  2209.  
  2210.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2211.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2212.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2213.             return;
  2214.           }
  2215.  
  2216.           groupCollapsed("Participant List attached", "");
  2217.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2218.           //   console.log(123, 'appendChild');
  2219.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2220.           // }
  2221.  
  2222.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2223.           //   console.log(123, 'insertBefore');
  2224.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2225.           // }
  2226.  
  2227.           cnt.__notifyPath5036__ = cnt.notifyPath
  2228.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2229.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2230.           console.log(`initial number of participants: ${participants.length}`);
  2231.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2232.           beforeParticipantsMap.set(cnt, newParticipants);
  2233.           cnt.notifyPath = notifyPath7081;
  2234.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2235.           console.groupEnd();
  2236.         }
  2237.         cProto.attached = function () {
  2238.           fpPList(this.hostElement || this);
  2239.           this.__attached412__.apply(this, arguments);
  2240.         };
  2241.  
  2242.  
  2243.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2244.  
  2245.           /** @type {boolean | (()=>boolean)} */
  2246.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2247.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2248.  
  2249.             let lastMessageDate = 0;
  2250.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2251.  
  2252.             cProto.stampDomArray_ = function (...args) {
  2253.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2254.                 if (typeof toUseMaintainStableList === 'function') {
  2255.                   toUseMaintainStableList = toUseMaintainStableList();
  2256.                 }
  2257.                 args[5] = toUseMaintainStableList;
  2258.                 let currentDate = Date.now();
  2259.                 if (currentDate - lastMessageDate > 440) {
  2260.                   lastMessageDate = currentDate;
  2261.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2262.                 }
  2263.               }
  2264.               return this.stampDomArray66_.apply(this, args);
  2265.             }
  2266.  
  2267.             cProto.stampDomArray_.nIegT = 1;
  2268.  
  2269.           }
  2270.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2271.         } else {
  2272.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2273.         }
  2274.  
  2275.         console.groupEnd();
  2276.  
  2277.         if (onPageElements.length >= 1) {
  2278.           for (const s of onPageElements) {
  2279.             if ((s.inst || s).isAttached === true) {
  2280.               fpPList(s);
  2281.             }
  2282.           }
  2283.         }
  2284.  
  2285.       }).catch(console.warn);
  2286.  
  2287.     };
  2288.  
  2289.     if (DO_PARTICIPANT_LIST_HACKS) {
  2290.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2291.     }
  2292.  
  2293.  
  2294.  
  2295.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2296.  
  2297.  
  2298.  
  2299.  
  2300.     const bnForDelayChatOccurrence = () => {
  2301.  
  2302.       document.addEventListener('animationstart', (evt) => {
  2303.  
  2304.         if (evt.animationName === 'dontRenderAnimation') {
  2305.           evt.target.classList.remove('dont-render');
  2306.           if (scrollChatFn) scrollChatFn();
  2307.         }
  2308.  
  2309.       }, true);
  2310.  
  2311.       const f = (elm) => {
  2312.         if (elm && elm.nodeType === 1) {
  2313.           if (!skipDontRender && allowDontRender === true) {
  2314.             // innerTextFixFn();
  2315.             elm.classList.add('dont-render');
  2316.           }
  2317.         }
  2318.       }
  2319.  
  2320.       Node.prototype.__appendChild931__ = function (a) {
  2321.         a = dr(a);
  2322.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2323.           if (a && a.nodeType === 1) f(a);
  2324.           else if (a instanceof DocumentFragment) {
  2325.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2326.               f(n);
  2327.             }
  2328.           }
  2329.         }
  2330.       }
  2331.  
  2332.       Node.prototype.__appendChild932__ = function () {
  2333.         this.__appendChild931__.apply(this, arguments);
  2334.         return Node.prototype.appendChild.apply(this, arguments);
  2335.       }
  2336.  
  2337.  
  2338.     };
  2339.  
  2340.     const watchUserCSS = () => {
  2341.  
  2342.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2343.  
  2344.       const getElemFromWR = (nr) => {
  2345.         const n = kRef(nr);
  2346.         if (n && n.isConnected) return n;
  2347.         return null;
  2348.       }
  2349.  
  2350.       const clearContentVisibilitySizing = () => {
  2351.         Promise.resolve().then(() => {
  2352.  
  2353.           const e = document.querySelector('#show-more[disabled]');
  2354.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2355.  
  2356.           let lastVisibleItemWR = null;
  2357.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2358.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2359.             elm.setAttribute('wSr93', '');
  2360.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2361.           }
  2362.           requestAnimationFrame(() => {
  2363.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2364.             if (btnShowMore) btnShowMore.click();
  2365.             else {
  2366.               // would not work if switch it frequently
  2367.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2368.               if (lastVisibleItem) {
  2369.  
  2370.                 Promise.resolve()
  2371.                   .then(() => lastVisibleItem.scrollIntoView())
  2372.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2373.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2374.                   .catch(e => { }) // break the chain when method not callable
  2375.  
  2376.               }
  2377.             }
  2378.           });
  2379.  
  2380.         });
  2381.  
  2382.       }
  2383.  
  2384.       const mutObserver = new MutationObserver((mutations) => {
  2385.         for (const mutation of mutations) {
  2386.           if ((mutation.addedNodes || 0).length >= 1) {
  2387.             for (const addedNode of mutation.addedNodes) {
  2388.               if (addedNode.nodeName === 'STYLE') {
  2389.                 clearContentVisibilitySizing();
  2390.                 return;
  2391.               }
  2392.             }
  2393.           }
  2394.           if ((mutation.removedNodes || 0).length >= 1) {
  2395.             for (const removedNode of mutation.removedNodes) {
  2396.               if (removedNode.nodeName === 'STYLE') {
  2397.                 clearContentVisibilitySizing();
  2398.                 return;
  2399.               }
  2400.             }
  2401.           }
  2402.         }
  2403.       });
  2404.  
  2405.       mutObserver.observe(document.documentElement, {
  2406.         childList: true,
  2407.         subtree: false
  2408.       });
  2409.       mutObserver.observe(document.head, {
  2410.         childList: true,
  2411.         subtree: false
  2412.       });
  2413.       mutObserver.observe(document.body, {
  2414.         childList: true,
  2415.         subtree: false
  2416.       });
  2417.  
  2418.     }
  2419.  
  2420.  
  2421.     class WillChangeController {
  2422.       constructor(itemScroller, willChangeValue) {
  2423.         this.element = itemScroller;
  2424.         this.counter = 0;
  2425.         this.active = false;
  2426.         this.willChangeValue = willChangeValue;
  2427.       }
  2428.  
  2429.       beforeOper() {
  2430.         if (!this.active) {
  2431.           this.active = true;
  2432.           this.element.style.willChange = this.willChangeValue;
  2433.         }
  2434.         this.counter++;
  2435.       }
  2436.  
  2437.       afterOper() {
  2438.         const c = this.counter;
  2439.         requestAnimationFrame(() => {
  2440.           if (c === this.counter) {
  2441.             this.active = false;
  2442.             this.element.style.willChange = '';
  2443.           }
  2444.         });
  2445.       }
  2446.  
  2447.       release() {
  2448.         const element = this.element;
  2449.         this.element = null;
  2450.         this.counter = 1e16;
  2451.         this.active = false;
  2452.         try {
  2453.           element.style.willChange = '';
  2454.         } catch (e) { }
  2455.       }
  2456.  
  2457.     }
  2458.  
  2459.  
  2460.     const skzData = (skz) => skz.data = {
  2461.       "message": {
  2462.         "runs": [
  2463.           {
  2464.             "text": "em2o"
  2465.           },
  2466.           {
  2467.             "emoji": {
  2468.               "emojiId": "cm35z",
  2469.               "shortcuts": [
  2470.                 ":_s:",
  2471.                 ":s:"
  2472.               ],
  2473.               "searchTerms": [
  2474.                 "_s",
  2475.                 "s"
  2476.               ],
  2477.               "image": {
  2478.                 "thumbnails": [
  2479.                   {
  2480.                     "url": dummyImgURL,
  2481.                     "width": 48,
  2482.                     "height": 48
  2483.                   }
  2484.                 ],
  2485.                 "accessibility": {
  2486.                   "accessibilityData": {
  2487.                     "label": "s"
  2488.                   }
  2489.                 }
  2490.               },
  2491.               "isCustomEmoji": true
  2492.             }
  2493.           },
  2494.           {
  2495.             "text": "ji"
  2496.           }
  2497.         ]
  2498.       },
  2499.       "authorName": {
  2500.         "simpleText": "N"
  2501.       },
  2502.       "authorPhoto": {
  2503.         "thumbnails": [
  2504.           {
  2505.             "url": dummyImgURL,
  2506.             "width": 64,
  2507.             "height": 64
  2508.           }
  2509.         ]
  2510.       },
  2511.       "contextMenuEndpoint": {
  2512.         "commandMetadata": {
  2513.           "webCommandMetadata": {
  2514.             "ignoreNavigation": true
  2515.           }
  2516.         },
  2517.         "liveChatItemContextMenuEndpoint": {
  2518.           "params": "123=="
  2519.         }
  2520.       },
  2521.       "id": "sk35z",
  2522.       "timestampUsec": "1232302352350000",
  2523.       "authorBadges": [
  2524.         {
  2525.           "liveChatAuthorBadgeRenderer": {
  2526.             "customThumbnail": {
  2527.               "thumbnails": [
  2528.                 {
  2529.                   "url": dummyImgURL,
  2530.                   "width": 16,
  2531.                   "height": 16
  2532.                 },
  2533.                 {
  2534.                   "url": dummyImgURL,
  2535.                   "width": 32,
  2536.                   "height": 32
  2537.                 }
  2538.               ]
  2539.             },
  2540.             "tooltip": "T",
  2541.             "accessibility": {
  2542.               "accessibilityData": {
  2543.                 "label": "E"
  2544.               }
  2545.             }
  2546.           }
  2547.         }
  2548.       ],
  2549.       "authorExternalChannelId": "A",
  2550.       "contextMenuAccessibility": {
  2551.         "accessibilityData": {
  2552.           "label": "E"
  2553.         }
  2554.       },
  2555.       "timestampText": {
  2556.         "simpleText": "0:43"
  2557.       }
  2558.     };
  2559.  
  2560.  
  2561.  
  2562.     const { lcRendererElm, visObserver } = (() => {
  2563.  
  2564.  
  2565.  
  2566.       let lcRendererWR = null;
  2567.  
  2568.       const lcRendererElm = () => {
  2569.         let lcRenderer = kRef(lcRendererWR);
  2570.         if (!lcRenderer || !lcRenderer.isConnected) {
  2571.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2572.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2573.         }
  2574.         return lcRenderer;
  2575.       };
  2576.  
  2577.  
  2578.       let hasFirstShowMore = false;
  2579.  
  2580.       const visObserverFn = (entry) => {
  2581.  
  2582.         const target = entry.target;
  2583.         if (!target) return;
  2584.         // if(target.classList.contains('dont-render')) return;
  2585.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2586.         // const h = entry.boundingClientRect.height;
  2587.         /*
  2588.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2589.             // e.g. under fullscreen. the element created but not rendered.
  2590.             target.setAttribute('wSr93', '');
  2591.             return;
  2592.         }
  2593.         */
  2594.         if (isVisible) {
  2595.           // target.style.setProperty('--wsr94', h + 'px');
  2596.           target.setAttribute('wSr93', 'visible');
  2597.           if (nNextElem(target) === null) {
  2598.  
  2599.             // firstVisibleItemDetected = true;
  2600.             /*
  2601.               if (dateNow() - lastScroll < 80) {
  2602.                   lastLShow = 0;
  2603.                   lastScroll = 0;
  2604.                   Promise.resolve().then(clickShowMore);
  2605.               } else {
  2606.                   lastLShow = dateNow();
  2607.               }
  2608.               */
  2609.             // lastLShow = dateNow();
  2610.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2611.             // implement inside visObserver to ensure there is sufficient delay
  2612.             hasFirstShowMore = true;
  2613.             requestAnimationFrame(() => {
  2614.               // foreground page
  2615.               // page visibly ready -> load the latest comments at initial loading
  2616.               const lcRenderer = lcRendererElm();
  2617.               if (lcRenderer) {
  2618.                 (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2619.               }
  2620.             });
  2621.           }
  2622.         }
  2623.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2624.  
  2625.           // target.style.setProperty('--wsr94', h + 'px');
  2626.           target.setAttribute('wSr93', 'hidden');
  2627.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2628.  
  2629.       }
  2630.  
  2631.  
  2632.  
  2633.       const visObserver = new IntersectionObserver((entries) => {
  2634.  
  2635.         for (const entry of entries) {
  2636.  
  2637.           Promise.resolve(entry).then(visObserverFn);
  2638.  
  2639.         }
  2640.  
  2641.       }, {
  2642.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2643.         rootMargin: "0px",
  2644.         threshold: [0.05, 0.95],
  2645.       });
  2646.  
  2647.  
  2648.       return { lcRendererElm, visObserver }
  2649.  
  2650.  
  2651.     })();
  2652.  
  2653.     const { setupMutObserver } = (() => {
  2654.  
  2655.       const mutFn = (items) => {
  2656.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2657.           if (node.hasAttribute('wSr93')) break;
  2658.           node.setAttribute('wSr93', '');
  2659.           visObserver.observe(node);
  2660.         }
  2661.       }
  2662.  
  2663.       const mutObserver = new MutationObserver((mutations) => {
  2664.         const items = (mutations[0] || 0).target;
  2665.         if (!items) return;
  2666.         if (sk35zResolveFn) {
  2667.           sk35zResolveFn();
  2668.           sk35zResolveFn = null;
  2669.         }
  2670.         mutFn(items);
  2671.       });
  2672.  
  2673.       const setupMutObserver = (m2) => {
  2674.         scrollChatFn = null;
  2675.         mutObserver.disconnect();
  2676.         mutObserver.takeRecords();
  2677.         if (m2) {
  2678.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2679.           if (typeof m2.__appendChild932__ === 'function') {
  2680.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2681.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2682.           }
  2683.           mutObserver.observe(m2, {
  2684.             childList: true,
  2685.             subtree: false
  2686.           });
  2687.           mutFn(m2);
  2688.  
  2689.           const isFirstList = firstList;
  2690.           firstList = false;
  2691.  
  2692.           if (ENABLE_OVERFLOW_ANCHOR) {
  2693.  
  2694.             let items = m2;
  2695.             let addedAnchor = false;
  2696.             if (items) {
  2697.               if (items.nextElementSibling === null) {
  2698.                 items.classList.add('no-anchor');
  2699.                 addedAnchor = true;
  2700.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2701.               }
  2702.             }
  2703.  
  2704.  
  2705.  
  2706.             if (addedAnchor) {
  2707.               nodeParent(m2).classList.add('no-anchor'); // required
  2708.             }
  2709.  
  2710.           }
  2711.  
  2712.           // let div = document.createElement('div');
  2713.           // div.id = 'qwcc';
  2714.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2715.           // bufferRegion =div;
  2716.  
  2717.           // buffObserver.takeRecords();
  2718.           // buffObserver.disconnect();
  2719.           // buffObserver.observe(div,  {
  2720.           //     childList: true,
  2721.           //     subtree: false
  2722.           // })
  2723.  
  2724.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2725.  
  2726.             promiseForCustomYtElementsReady.then(() => {
  2727.  
  2728.               customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2729.  
  2730.  
  2731.  
  2732.  
  2733.                 setTimeout(() => {
  2734.  
  2735.                   /** @type {HTMLTemplateElement} */
  2736.                   let skz = document.createElement('yt-live-chat-text-message-renderer');
  2737.  
  2738.                   let cz1 = null;
  2739.  
  2740.                   if (skz && 'data' in skz && 'attached' in skz) {
  2741.  
  2742.                     const deferredZy1 = new Promise(resolve => {
  2743.  
  2744.                       skz.attached = function () {
  2745.                         cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2746.                         resolve(skz.textContent);
  2747.                       }
  2748.                       skz.detached = function () {
  2749.  
  2750.                       }
  2751.  
  2752.                     });
  2753.                     skz.id = 'sk35z';
  2754.                     skzData(skz);
  2755.  
  2756.  
  2757.                     sk35zResolveFn = null;
  2758.                     const deferredMutation = new Promise(resolve => {
  2759.                       sk35zResolveFn = resolve;
  2760.                       HTMLElement.prototype.appendChild.call(m2, skz);
  2761.                     });
  2762.  
  2763.                     Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2764.                       const [zy1, _] = res;
  2765.                       function fn() {
  2766.                         const zy2 = skz.textContent;
  2767.                         const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2768.                         if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2769.                           allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2770.                         }
  2771.                         if (allowDontRender === false) {
  2772.  
  2773.                           console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2774.                             "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2775.                             "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2776.                           );
  2777.  
  2778.                           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');
  2779.  
  2780.                           console.groupEnd();
  2781.                         } else if (allowDontRender === true) {
  2782.                           return true;
  2783.                         }
  2784.                       }
  2785.                       await new Promise(r => setTimeout(r, 1));
  2786.                       if (fn()) {
  2787.                         await new Promise(r => requestAnimationFrame(r));
  2788.                         if (fn()) {
  2789.                           skz.remove();
  2790.                           skz.textContent = '';
  2791.                           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2792.                         }
  2793.                       }
  2794.                     });
  2795.  
  2796.                   }
  2797.  
  2798.                 }, 1);
  2799.  
  2800.               }).catch(console.warn);
  2801.  
  2802.             })
  2803.  
  2804.           }
  2805.  
  2806.  
  2807.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2808.  
  2809.             (() => {
  2810.  
  2811.               const tag = 'yt-iframed-player-events-relay'
  2812.               const dummy = document.createElement(tag);
  2813.  
  2814.               const cProto = getProto(dummy);
  2815.               if (!cProto || !cProto.handlePostMessage_) {
  2816.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2817.                 return;
  2818.               }
  2819.  
  2820.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2821.  
  2822.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2823.  
  2824.                 cProto.handlePostMessage67_ = function (a) {
  2825.  
  2826.                   const da = a.data;
  2827.  
  2828.  
  2829.  
  2830.                   playEventsStack = playEventsStack.then(() => {
  2831.  
  2832.  
  2833.  
  2834.                     if ('yt-player-state-change' in da) {
  2835.  
  2836.                       const qc = da['yt-player-state-change'];
  2837.  
  2838.  
  2839.                       let isQcChanged = false;
  2840.  
  2841.                       if (qc === 2) { isQcChanged = qc !== _playerState; _playerState = 2; relayCount = 0; } // paused
  2842.                       else if (qc === 3) { isQcChanged = qc !== _playerState; _playerState = 3; } // playing
  2843.                       else if (qc === 1) { isQcChanged = qc !== _playerState; _playerState = 1; } // playing
  2844.  
  2845.  
  2846.                       if ((isQcChanged) && playerState !== _playerState) {
  2847.                         playerEventsByIframeRelay = true;
  2848.                         onPlayStateChangePromise = new Promise((resolve) => {
  2849.                           let k = _playerState;
  2850.                           getRafPromiseForTickers().then(() => {
  2851.                             if (k === _playerState && playerState !== _playerState) playerState = _playerState;
  2852.                             onPlayStateChangePromise = null;
  2853.                             resolve();
  2854.                           })
  2855.                         }).catch(console.warn);
  2856.  
  2857.                       }
  2858.  
  2859.                     } else if ('yt-player-video-progress' in da) {
  2860.                       const vp = da['yt-player-video-progress'];
  2861.  
  2862.  
  2863.                       relayCount++;
  2864.                       lastPlayerProgress = vp > 0 ? vp : 0;
  2865.  
  2866.  
  2867.                       if (relayPromise && vp > 0 && relayCount >= 2) {
  2868.                         if (onPlayStateChangePromise) {
  2869.                           onPlayStateChangePromise.then(() => {
  2870.                             relayPromise && relayPromise.resolve();
  2871.                             relayPromise = null;
  2872.                           })
  2873.                         } else {
  2874.                           relayPromise.resolve();
  2875.                           relayPromise = null;
  2876.                         }
  2877.                       }
  2878.  
  2879.  
  2880.  
  2881.                     }
  2882.  
  2883.  
  2884.  
  2885.  
  2886.  
  2887.  
  2888.                     return this.handlePostMessage66_(a);
  2889.  
  2890.  
  2891.  
  2892.                   }).catch(console.warn);
  2893.  
  2894.                 }
  2895.  
  2896.  
  2897.                 cProto.handlePostMessage_ = function (a) {
  2898.  
  2899.  
  2900.                   const da = (a || 0).data || 0;
  2901.  
  2902.                   if (typeof da !== 'object') return;
  2903.  
  2904.                   if (waitForInitialDataCompletion === 1) return;
  2905.  
  2906.                   if (!isPlayProgressTriggered) {
  2907.                     isPlayProgressTriggered = true;
  2908.  
  2909.                     if ('yt-player-video-progress' in da) {
  2910.                       waitForInitialDataCompletion = 1;
  2911.  
  2912.                       const wrapWith = (data) => {
  2913.                         const { origin } = a;
  2914.                         return {
  2915.                           origin,
  2916.                           data
  2917.                         };
  2918.                       }
  2919.  
  2920.                       this.handlePostMessage67_(wrapWith({
  2921.                         "yt-iframed-parent-ready": true
  2922.                       }));
  2923.  
  2924.  
  2925.  
  2926.                       playEventsStack = playEventsStack.then(() => {
  2927.  
  2928.  
  2929.  
  2930.                         const lcr = document.querySelector('yt-live-chat-renderer');
  2931.                         const psc = document.querySelector("yt-player-seek-continuation");
  2932.                         if (lcr && psc && lcr.replayBuffer_) {
  2933.  
  2934.  
  2935.                           const rbProgress = lcr.replayBuffer_.lastVideoOffsetTimeMsec;
  2936.                           const daProgress = da['yt-player-video-progress'] * 1000
  2937.                           // document.querySelector('yt-live-chat-renderer').playerProgressChanged_(1e-5);
  2938.  
  2939.  
  2940.                           const front_ = (lcr.replayBuffer_.replayQueue || 0).front_;
  2941.                           const back_ = (lcr.replayBuffer_.replayQueue || 0).back_;
  2942.  
  2943.  
  2944.                           // console.log(deepCopy( front_))
  2945.                           // console.log(deepCopy( back_))
  2946.                           // console.log(rbProgress, daProgress, )
  2947.                           if (front_ && back_ && rbProgress > daProgress && back_.length > 2 && back_.some(e => e && +e.videoOffsetTimeMsec > daProgress) && back_.some(e => e && +e.videoOffsetTimeMsec < daProgress)) {
  2948.                             // no action
  2949.                             // console.log('ss1')
  2950.                           } else if (rbProgress < daProgress + 3400 && rbProgress > daProgress - 1200) {
  2951.                             //  daProgress - 1200 < rbProgress < daProgress + 3400
  2952.                             // console.log('ss2')
  2953.                           } else {
  2954.  
  2955.                             // console.log('ss3')
  2956.                             // lcr.replayBuffer_.replayQueue.back_.length= 0;
  2957.                             // lcr.replayBuffer_.replayQueue.front_.length= 0;
  2958.  
  2959.                             // lcr
  2960.                             lcr.previousProgressSec = 1E-5;
  2961.                             // lcr._setIsSeeking(!0),
  2962.                             lcr.replayBuffer_.clear()
  2963.                             psc.fireSeekContinuation_(da['yt-player-video-progress']);
  2964.                           }
  2965.  
  2966.                         }
  2967.  
  2968.  
  2969.                         waitForInitialDataCompletion = 2;
  2970.  
  2971.                         this.handlePostMessage_(a);
  2972.  
  2973.  
  2974.                       }).catch(console.warn);
  2975.  
  2976.  
  2977.  
  2978.                       return;
  2979.  
  2980.                     }
  2981.  
  2982.                   }
  2983.  
  2984.  
  2985.  
  2986.                   this.handlePostMessage67_(a);
  2987.  
  2988.  
  2989.  
  2990.                 }
  2991.  
  2992.               }
  2993.  
  2994.  
  2995.             })();
  2996.  
  2997.           }
  2998.  
  2999.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  3000.             setTimeout(() => {
  3001.               if (!hasTimerModified) return;
  3002.               const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  3003.               if (!tickerRenderer) return;
  3004.  
  3005.               const items = (tickerRenderer.$ || 0).items || 0;
  3006.               if (!items) return;
  3007.               const template = document.createElement('template');
  3008.               template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  3009.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  3010.                 dimmed="" [dummy777]>
  3011.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  3012.                   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));">
  3013.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  3014.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  3015.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  3016.                       style="background-color: transparent;" loaded=""><img id="img"
  3017.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  3018.                         src="${dummyImgURL}"></yt-img-shadow777>
  3019.  
  3020.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  3021.                   </div>
  3022.                 </div>
  3023.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  3024.               const dummy777 = template.content.firstElementChild;
  3025.               items.appendChild(dummy777);
  3026.               Promise.resolve(dummy777).then((dummy777) => {
  3027.                 let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  3028.                 if (container.isConnected === true) {
  3029.  
  3030.                   const evaluated = `${getComputedStyle(container).background}`;
  3031.  
  3032.                   container = null;
  3033.                   dummy777.remove();
  3034.                   dummy777.textContent = '';
  3035.                   dummy777 = null;
  3036.  
  3037.                   if (evaluated.indexOf('0.') < 4) {
  3038.  
  3039.                     // not fulfilling
  3040.                     // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3041.  
  3042.                     console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3043.                       "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3044.                       "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3045.                     );
  3046.                     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');
  3047.                     console.groupEnd();
  3048.  
  3049.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  3050.  
  3051.                   } else {
  3052.  
  3053.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3054.                   }
  3055.                 }
  3056.               });
  3057.  
  3058.             }, 800);
  3059.           }
  3060.  
  3061.         }
  3062.       }
  3063.  
  3064.       return { setupMutObserver };
  3065.  
  3066.  
  3067.  
  3068.     })();
  3069.  
  3070.     const setupEvents = () => {
  3071.  
  3072.  
  3073.       let scrollCount = 0;
  3074.  
  3075.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  3076.  
  3077.  
  3078.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  3079.  
  3080.         const lcRenderer = lcRendererElm();
  3081.         if (lcRenderer) {
  3082.           const cnt = (lcRenderer.inst || lcRenderer);
  3083.           if (!cnt.hasUserJustInteracted11_) return;
  3084.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  3085.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  3086.           }
  3087.         }
  3088.  
  3089.       }
  3090.  
  3091.       document.addEventListener('scroll', (evt) => {
  3092.         if (!evt || !evt.isTrusted) return;
  3093.         // lastScroll = dateNow();
  3094.         if (++scrollCount > 1e9) scrollCount = 9;
  3095.       }, passiveCapture); // support contain => support passive
  3096.  
  3097.       let lastScrollCount = -1;
  3098.       document.addEventListener('wheel', (evt) => {
  3099.         if (!evt || !evt.isTrusted) return;
  3100.         if (lastScrollCount === scrollCount) return;
  3101.         lastScrollCount = scrollCount;
  3102.         lastWheel = dateNow();
  3103.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3104.       }, passiveCapture); // support contain => support passive
  3105.  
  3106.       document.addEventListener('mousedown', (evt) => {
  3107.         if (!evt || !evt.isTrusted) return;
  3108.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3109.         lastMouseDown = dateNow();
  3110.         currentMouseDown = true;
  3111.         lastUserInteraction = lastMouseDown;
  3112.       }, passiveCapture);
  3113.  
  3114.       document.addEventListener('pointerdown', (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('click', (evt) => {
  3123.         if (!evt || !evt.isTrusted) return;
  3124.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3125.         lastMouseDown = lastMouseUp = dateNow();
  3126.         currentMouseDown = false;
  3127.         lastUserInteraction = lastMouseDown;
  3128.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3129.       }, passiveCapture);
  3130.  
  3131.       document.addEventListener('tap', (evt) => {
  3132.         if (!evt || !evt.isTrusted) return;
  3133.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3134.         lastMouseDown = lastMouseUp = dateNow();
  3135.         currentMouseDown = false;
  3136.         lastUserInteraction = lastMouseDown;
  3137.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3138.       }, passiveCapture);
  3139.  
  3140.  
  3141.       document.addEventListener('mouseup', (evt) => {
  3142.         if (!evt || !evt.isTrusted) return;
  3143.         if (currentMouseDown) {
  3144.           lastMouseUp = dateNow();
  3145.           currentMouseDown = false;
  3146.           lastUserInteraction = lastMouseUp;
  3147.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3148.         }
  3149.       }, passiveCapture);
  3150.  
  3151.  
  3152.       document.addEventListener('pointerup', (evt) => {
  3153.         if (!evt || !evt.isTrusted) return;
  3154.         if (currentMouseDown) {
  3155.           lastMouseUp = dateNow();
  3156.           currentMouseDown = false;
  3157.           lastUserInteraction = lastMouseUp;
  3158.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3159.         }
  3160.       }, passiveCapture);
  3161.  
  3162.       document.addEventListener('touchstart', (evt) => {
  3163.         if (!evt || !evt.isTrusted) return;
  3164.         lastTouchDown = dateNow();
  3165.         currentTouchDown = true;
  3166.         lastUserInteraction = lastTouchDown;
  3167.       }, passiveCapture);
  3168.  
  3169.       document.addEventListener('touchmove', (evt) => {
  3170.         if (!evt || !evt.isTrusted) return;
  3171.         lastTouchDown = dateNow();
  3172.         currentTouchDown = true;
  3173.         lastUserInteraction = lastTouchDown;
  3174.       }, passiveCapture);
  3175.  
  3176.       document.addEventListener('touchend', (evt) => {
  3177.         if (!evt || !evt.isTrusted) return;
  3178.         if (currentTouchDown) {
  3179.           lastTouchUp = dateNow();
  3180.           currentTouchDown = false;
  3181.           lastUserInteraction = lastTouchUp;
  3182.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3183.         }
  3184.       }, passiveCapture);
  3185.  
  3186.       document.addEventListener('touchcancel', (evt) => {
  3187.         if (!evt || !evt.isTrusted) return;
  3188.         if (currentTouchDown) {
  3189.           lastTouchUp = dateNow();
  3190.           currentTouchDown = false;
  3191.           lastUserInteraction = lastTouchUp;
  3192.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3193.         }
  3194.       }, passiveCapture);
  3195.  
  3196.  
  3197.     }
  3198.  
  3199.  
  3200.     const onRegistryReadyForDOMOperations = () => {
  3201.  
  3202.       let firstCheckedOnYtInit = false;
  3203.  
  3204.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  3205.  
  3206.       const mightFirstCheckOnYtInit = () => {
  3207.         if (firstCheckedOnYtInit) return;
  3208.         firstCheckedOnYtInit = true;
  3209.  
  3210.         if (!document.body || !document.head) return;
  3211.         if (!assertorURL()) return;
  3212.  
  3213.         addCssManaged();
  3214.  
  3215.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  3216.         if (efsContainer && efsContainer.parentNode !== document.body) {
  3217.           document.body.appendChild(efsContainer);
  3218.         }
  3219.  
  3220.       };
  3221.  
  3222.       if (!assertorURL()) return;
  3223.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3224.  
  3225.       if (document.documentElement && document.head) {
  3226.         addCssManaged();
  3227.       }
  3228.       // console.log(document.body===null)
  3229.  
  3230.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3231.  
  3232.         const tag = "yt-live-chat-item-list-renderer"
  3233.         const dummy = document.createElement(tag);
  3234.  
  3235.         const cProto = getProto(dummy);
  3236.         if (!cProto || !cProto.attached) {
  3237.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3238.           return;
  3239.         }
  3240.  
  3241.         mightFirstCheckOnYtInit();
  3242.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3243.         console.log("[Begin]");
  3244.  
  3245.         const mclp = cProto;
  3246.         try {
  3247.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3248.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3249.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3250.           assertor(() => typeof mclp.setAtBottom === 'function');
  3251.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3252.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3253.         } catch (e) { }
  3254.  
  3255.  
  3256.         try {
  3257.           assertor(() => typeof mclp.attached === 'function');
  3258.           assertor(() => typeof mclp.detached === 'function');
  3259.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3260.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3261.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3262.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3263.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3264.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3265.         } catch (e) { }
  3266.  
  3267.         mclp.__intermediate_delay__ = null;
  3268.  
  3269.         let mzk = 0;
  3270.         let myk = 0;
  3271.         let mlf = 0;
  3272.         let myw = 0;
  3273.         let mzt = 0;
  3274.         let zarr = null;
  3275.         let mlg = 0;
  3276.  
  3277.         if ((mclp.clearList || 0).length === 0) {
  3278.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3279.           mclp.clearList66 = mclp.clearList;
  3280.           mclp.clearList = function () {
  3281.             mzk++;
  3282.             myk++;
  3283.             mlf++;
  3284.             myw++;
  3285.             mzt++;
  3286.             mlg++;
  3287.             zarr = null;
  3288.             this.__intermediate_delay__ = null;
  3289.             this.clearList66();
  3290.           };
  3291.           console.log("clearList", "OK");
  3292.         } else {
  3293.           console.log("clearList", "NG");
  3294.         }
  3295.  
  3296.  
  3297.         let onListRendererAttachedDone = false;
  3298.  
  3299.         function setList(itemOffset, items) {
  3300.  
  3301.           const isFirstTime = onListRendererAttachedDone === false;
  3302.  
  3303.           if (isFirstTime) {
  3304.             onListRendererAttachedDone = true;
  3305.             Promise.resolve().then(watchUserCSS);
  3306.             addCssManaged();
  3307.             setupEvents();
  3308.           }
  3309.  
  3310.           setupStyle(itemOffset, items);
  3311.  
  3312.           setupMutObserver(items);
  3313.         }
  3314.  
  3315.         mclp.attached419 = async function () {
  3316.  
  3317.           if (!this.isAttached) return;
  3318.  
  3319.           let maxTrial = 16;
  3320.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3321.             if (--maxTrial < 0 || !this.isAttached) return;
  3322.             await new Promise(requestAnimationFrame);
  3323.           }
  3324.  
  3325.           if (this.isAttached !== true) return;
  3326.  
  3327.           if (!this.$) {
  3328.             console.warn("!this.$");
  3329.             return;
  3330.           }
  3331.           if (!this.$) return;
  3332.           /** @type {HTMLElement | null} */
  3333.           const itemScroller = this.$['item-scroller'];
  3334.           /** @type {HTMLElement | null} */
  3335.           const itemOffset = this.$['item-offset'];
  3336.           /** @type {HTMLElement | null} */
  3337.           const items = this.$['items'];
  3338.  
  3339.           if (!itemScroller || !itemOffset || !items) {
  3340.             console.warn("items.parentNode !== itemOffset");
  3341.             return;
  3342.           }
  3343.  
  3344.           if (nodeParent(items) !== itemOffset) {
  3345.  
  3346.             console.warn("items.parentNode !== itemOffset");
  3347.             return;
  3348.           }
  3349.  
  3350.  
  3351.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3352.  
  3353.             console.warn("id incorrect");
  3354.             return;
  3355.           }
  3356.  
  3357.           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')
  3358.  
  3359.           if (!isTargetItems) {
  3360.             console.warn("!isTargetItems");
  3361.             return;
  3362.           }
  3363.  
  3364.           setList(itemOffset, items);
  3365.  
  3366.         }
  3367.  
  3368.         mclp.attached331 = mclp.attached;
  3369.         mclp.attached = function () {
  3370.           this.attached419 && this.attached419();
  3371.           return this.attached331();
  3372.         }
  3373.  
  3374.         mclp.detached331 = mclp.detached;
  3375.  
  3376.         mclp.detached = function () {
  3377.           setupMutObserver();
  3378.           return this.detached331();
  3379.         }
  3380.  
  3381.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3382.         for (const t29 of t29s) {
  3383.           if ((t29.inst || t29).isAttached === true) {
  3384.             t29.attached419();
  3385.           }
  3386.         }
  3387.  
  3388.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3389.  
  3390.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3391.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3392.  
  3393.           /** @type {Map<number, any>} */
  3394.           const aMap = new Map();
  3395.           let count = 6150;
  3396.           mclp.async66 = mclp.async;
  3397.           mclp.async = function (e, f) {
  3398.             // ensure the previous operation is done
  3399.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3400.             const hasF = arguments.length === 2;
  3401.             const stack = new Error().stack;
  3402.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3403.             if (count > 1e9) count = 6159;
  3404.             const resId = ++count;
  3405.             aMap.set(resId, e);
  3406.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3407.               const rp = aMap.get(resId);
  3408.               if (typeof rp !== 'function') {
  3409.                 return;
  3410.               }
  3411.               let cancelCall = false;
  3412.               if (isFlushAsync) {
  3413.                 if (rk < 0) {
  3414.                   cancelCall = true;
  3415.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3416.                   cancelCall = true;
  3417.                 }
  3418.               }
  3419.               if (cancelCall) {
  3420.                 aMap.delete(resId);
  3421.               } else {
  3422.                 const asyncEn = function () {
  3423.                   aMap.delete(resId);
  3424.                   return rp.apply(this, arguments);
  3425.                 };
  3426.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3427.               }
  3428.             });
  3429.  
  3430.             return resId;
  3431.           }
  3432.  
  3433.           mclp.cancelAsync66 = mclp.cancelAsync;
  3434.           mclp.cancelAsync = function (resId) {
  3435.             if (resId <= 6150) {
  3436.               this.cancelAsync66(resId);
  3437.             } else if (aMap.has(resId)) {
  3438.               const rp = aMap.get(resId);
  3439.               aMap.delete(resId);
  3440.               if (typeof rp !== 'function') {
  3441.                 this.cancelAsync66(rp);
  3442.               }
  3443.             }
  3444.           }
  3445.  
  3446.           console.log("async", "OK");
  3447.         } else {
  3448.           console.log("async", "NG");
  3449.         }
  3450.  
  3451.  
  3452.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3453.  
  3454.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3455.           mclp.showNewItems66_ = mclp.showNewItems_;
  3456.  
  3457.           mclp.showNewItems77_ = async function () {
  3458.             if (myk > 1e9) myk = 9;
  3459.             let tid = ++myk;
  3460.  
  3461.             await new Promise(requestAnimationFrame);
  3462.  
  3463.             if (tid !== myk) {
  3464.               return;
  3465.             }
  3466.  
  3467.             const cnt = this;
  3468.  
  3469.             await Promise.resolve();
  3470.             cnt.showNewItems66_();
  3471.  
  3472.             await Promise.resolve();
  3473.  
  3474.           }
  3475.  
  3476.           mclp.showNewItems_ = function () {
  3477.  
  3478.             const cnt = this;
  3479.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3480.               cnt.showNewItems77_().then(() => {
  3481.                 resolve();
  3482.               });
  3483.             });
  3484.           }
  3485.  
  3486.           console.log("showNewItems_", "OK");
  3487.         } else {
  3488.           console.log("showNewItems_", "NG");
  3489.         }
  3490.  
  3491.  
  3492.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3493.  
  3494.           assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3495.  
  3496.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3497.  
  3498.           let contensWillChangeController = null;
  3499.  
  3500.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3501.  
  3502.           mclp.flushActiveItems78_ = async function (tid) {
  3503.             try {
  3504.               if (tid !== mlf) return;
  3505.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3506.               let logger = false;
  3507.               const cnt = this;
  3508.               let immd = cnt.__intermediate_delay__;
  3509.               await new Promise(requestAnimationFrame);
  3510.  
  3511.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3512.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3513.  
  3514.               mlf++;
  3515.               if (mlg > 1e9) mlg = 9;
  3516.               ++mlg;
  3517.  
  3518.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3519.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3520.               let changeMaxItemsToDisplay = false;
  3521.               const activeItemsLen = this.activeItems_.length;
  3522.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3523.                 logger = true;
  3524.  
  3525.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3526.  
  3527.                 logger && console.log('[Begin]')
  3528.  
  3529.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3530.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3531.                   console.log('reduce maxitems');
  3532.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3533.                     // as all the rendered chats are already "outdated"
  3534.                     // all old chats shall remove and reduced number of few chats will be rendered
  3535.                     // then restore to the original number
  3536.                     changeMaxItemsToDisplay = true;
  3537.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3538.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3539.                   }
  3540.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3541.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3542.  
  3543.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3544.                 } else {
  3545.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3546.  
  3547.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3548.                 }
  3549.               }
  3550.               // it is found that it will render all stacked chats after switching back from background
  3551.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3552.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3553.  
  3554.  
  3555.               const items = (cnt.$ || 0).items;
  3556.  
  3557.               if (USE_WILL_CHANGE_CONTROLLER) {
  3558.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3559.                   contensWillChangeController.release();
  3560.                   contensWillChangeController = null;
  3561.                 }
  3562.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3563.               }
  3564.               const wcController = contensWillChangeController;
  3565.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3566.               wcController && wcController.beforeOper();
  3567.               await Promise.resolve();
  3568.               const acItems = cnt.activeItems_;
  3569.               const len1 = acItems.length;
  3570.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3571.               let waitFor = [];
  3572.  
  3573.  
  3574.               /** @type {Set<string>} */
  3575.               const imageLinks = new Set();
  3576.  
  3577.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3578.                 for (const item of acItems) {
  3579.                   fixLiveChatItem(item, imageLinks);
  3580.                 }
  3581.               }
  3582.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3583.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3584.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3585.  
  3586.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3587.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3588.                 // preload performs the high priority fetching.
  3589.                 // prefetch delays the chat display if the video resoruce is demanding.
  3590.  
  3591.                 if (rel) {
  3592.  
  3593.                   imageLinks.forEach(imageLink => {
  3594.                     let d = false;
  3595.                     const isEmoji = imageLink.includes('/emoji/');
  3596.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3597.                     if (!pretechedSet.has(imageLink)) {
  3598.                       pretechedSet.add(imageLink);
  3599.                       d = true;
  3600.                     }
  3601.                     if (d) {
  3602.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3603.  
  3604.                     }
  3605.                   })
  3606.  
  3607.                 }
  3608.  
  3609.               }
  3610.  
  3611.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3612.               // console.log('ss1', Date.now())
  3613.               if (waitFor.length > 0) {
  3614.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3615.               }
  3616.               waitFor.length = 0;
  3617.               waitFor = null;
  3618.               // console.log('ss2', Date.now())
  3619.               cnt.flushActiveItems66_();
  3620.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3621.               const len2 = cnt.activeItems_.length;
  3622.               const bAsync = len1 !== len2;
  3623.               await Promise.resolve();
  3624.               if (wcController) {
  3625.                 if (bAsync) {
  3626.                   cnt.async(() => {
  3627.                     wcController.afterOper();
  3628.                   });
  3629.                 } else {
  3630.                   wcController.afterOper();
  3631.                 }
  3632.               }
  3633.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3634.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3635.  
  3636.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3637.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3638.               } else if (changeMaxItemsToDisplay) {
  3639.  
  3640.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3641.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  3642.                   reducedMaxItemsToDisplay,
  3643.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  3644.                 });
  3645.               }
  3646.               logger && console.log('[End]')
  3647.  
  3648.               logger && console.groupEnd();
  3649.  
  3650.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3651.  
  3652.  
  3653.                 const ff = () => {
  3654.  
  3655.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3656.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3657.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3658.                     cnt.scrollToBottom_();
  3659.  
  3660.                     Promise.resolve().then(() => {
  3661.  
  3662.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3663.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3664.                     });
  3665.  
  3666.  
  3667.                   }
  3668.                 }
  3669.  
  3670.                 ff();
  3671.  
  3672.  
  3673.                 Promise.resolve().then(ff);
  3674.  
  3675.                 // requestAnimationFrame(ff);
  3676.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  3677.  
  3678.                 const knt = cnt;
  3679.                 if (!scrollChatFn) {
  3680.                   const cnt = knt;
  3681.                   const f = () => {
  3682.                     const itemScroller = cnt.itemScroller;
  3683.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  3684.                     if (!cnt.atBottom) {
  3685.                       cnt.scrollToBottom_();
  3686.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  3687.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  3688.                     }
  3689.                   };
  3690.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  3691.                 }
  3692.  
  3693.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  3694.               }
  3695.  
  3696.               return 1;
  3697.  
  3698.  
  3699.             } catch (e) {
  3700.               console.warn(e);
  3701.             }
  3702.           }
  3703.  
  3704.           mclp.flushActiveItems77_ = function () {
  3705.  
  3706.             return new Promise(resResolve => {
  3707.               try {
  3708.                 const cnt = this;
  3709.                 if (mlf > 1e9) mlf = 9;
  3710.                 let tid = ++mlf;
  3711.                 const hostElement = cnt.hostElement || cnt;
  3712.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  3713.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  3714.  
  3715.                 // 4 times to maxItems to avoid frequent trimming.
  3716.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  3717.  
  3718.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3719.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  3720.                 if (cnt.canScrollToBottom_()) {
  3721.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  3722.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  3723.                     .then((asyncResult) => {
  3724.                       resResolve(asyncResult); // either undefined or 1
  3725.                       resResolve = null;
  3726.                     }).catch((e) => {
  3727.                       console.warn(e);
  3728.                       if (resResolve) resResolve();
  3729.                     });
  3730.                 } else {
  3731.                   resResolve(2);
  3732.                   resResolve = null;
  3733.                 }
  3734.               } catch (e) {
  3735.                 console.warn(e);
  3736.                 if (resResolve) resResolve();
  3737.               }
  3738.  
  3739.  
  3740.             });
  3741.  
  3742.           }
  3743.  
  3744.           mclp.flushActiveItems_ = function () {
  3745.             const cnt = this;
  3746.  
  3747.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  3748.  
  3749.             if (cnt.activeItems_.length === 0) {
  3750.               cnt.__intermediate_delay__ = null;
  3751.               return;
  3752.             }
  3753.  
  3754.             const cntData = ((cnt || 0).data || 0);
  3755.             if (cntData.maxItemsToDisplay944 === undefined) {
  3756.               cntData.maxItemsToDisplay944 = null;
  3757.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  3758.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  3759.             }
  3760.  
  3761.             // ignore previous __intermediate_delay__ and create a new one
  3762.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3763.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  3764.                 if (rt === 1) {
  3765.                   resolve(1); // success, scroll to bottom
  3766.                   if (hasMoreMessageState === 1) {
  3767.                     hasMoreMessageState = 0;
  3768.                     const showMore = (cnt.$ || 0)['show-more'];
  3769.                     if (showMore) {
  3770.                       showMore.classList.remove('has-new-messages-miuzp');
  3771.                     }
  3772.                   }
  3773.                 }
  3774.                 else if (rt === 2) {
  3775.                   resolve(2); // success, trim
  3776.                   if (hasMoreMessageState === 0) {
  3777.                     hasMoreMessageState = 1;
  3778.                     const showMore = cnt.$['show-more'];
  3779.                     if (showMore) {
  3780.                       showMore.classList.add('has-new-messages-miuzp');
  3781.                     }
  3782.                   }
  3783.                 }
  3784.                 else resolve(-1); // skip
  3785.               }).catch(e => {
  3786.                 console.warn(e);
  3787.               });
  3788.             });
  3789.  
  3790.           }
  3791.           console.log("flushActiveItems_", "OK");
  3792.         } else {
  3793.           console.log("flushActiveItems_", "NG");
  3794.         }
  3795.  
  3796.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  3797.           try {
  3798.             if (mlg > 1e9) mlg = 9;
  3799.             const tid = ++mlg;
  3800.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  3801.             const runCond = () => this.canScrollToBottom_();
  3802.             if (!keepTrialCond()) return;
  3803.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  3804.             await new Promise(r => setTimeout(r, 80));
  3805.             if (!keepTrialCond()) return;
  3806.             if (runCond()) return this.flushActiveItems_() | 1;
  3807.             await new Promise(requestAnimationFrame);
  3808.             if (runCond()) return this.flushActiveItems_() | 1;
  3809.           } catch (e) {
  3810.             console.warn(e);
  3811.           }
  3812.         }
  3813.  
  3814.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  3815.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  3816.           assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  3817.  
  3818.           const querySelector = HTMLElement.prototype.querySelector;
  3819.           const U = (element) => ({
  3820.             querySelector: (selector) => querySelector.call(element, selector)
  3821.           });
  3822.  
  3823.           let qid = 0;
  3824.           mclp.atBottomChanged_ = function (a) {
  3825.             let tid = ++qid;
  3826.             let b = this;
  3827.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  3828.               if (tid !== qid) return;
  3829.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  3830.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  3831.               this.hideShowMoreAsync_ = null,
  3832.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  3833.           }
  3834.  
  3835.           console.log("atBottomChanged_", "OK");
  3836.         } else {
  3837.           console.log("atBottomChanged_", "NG");
  3838.         }
  3839.  
  3840.         if ((mclp.onScrollItems_ || 0).length === 1) {
  3841.  
  3842.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  3843.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  3844.           mclp.onScrollItems77_ = async function (evt) {
  3845.             if (myw > 1e9) myw = 9;
  3846.             let tid = ++myw;
  3847.  
  3848.             await new Promise(requestAnimationFrame);
  3849.  
  3850.             if (tid !== myw) {
  3851.               return;
  3852.             }
  3853.  
  3854.             const cnt = this;
  3855.  
  3856.             await Promise.resolve();
  3857.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  3858.               await Promise.resolve().then(() => {
  3859.                 this.ytRendererBehavior.onScroll(evt);
  3860.               }).then(() => {
  3861.                 if (this.canScrollToBottom_()) {
  3862.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  3863.                   if (hasUserJustInteracted) {
  3864.                     // only when there is an user action
  3865.                     this.setAtBottom();
  3866.                     return 1;
  3867.                   }
  3868.                 } else {
  3869.                   // no message inserting
  3870.                   this.setAtBottom();
  3871.                   return 1;
  3872.                 }
  3873.               }).then((r) => {
  3874.  
  3875.                 if (this.activeItems_.length) {
  3876.  
  3877.                   if (this.canScrollToBottom_()) {
  3878.                     this.flushActiveItems_();
  3879.                     return 1 && r;
  3880.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  3881.                     // delayed due to user action
  3882.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  3883.                     return 0;
  3884.                   }
  3885.                 }
  3886.               }).then((r) => {
  3887.                 if (r) {
  3888.                   // ensure setAtBottom is correctly set
  3889.                   this.setAtBottom();
  3890.                 }
  3891.               });
  3892.             } else {
  3893.               cnt.onScrollItems66_(evt);
  3894.             }
  3895.  
  3896.             await Promise.resolve();
  3897.  
  3898.           }
  3899.  
  3900.           mclp.onScrollItems_ = function (evt) {
  3901.  
  3902.             const cnt = this;
  3903.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3904.               cnt.onScrollItems77_(evt).then(() => {
  3905.                 resolve();
  3906.               });
  3907.             });
  3908.           }
  3909.           console.log("onScrollItems_", "OK");
  3910.         } else {
  3911.           console.log("onScrollItems_", "NG");
  3912.         }
  3913.  
  3914.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  3915.  
  3916.           assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  3917.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  3918.  
  3919.           mclp.handleLiveChatActions77_ = async function (arr) {
  3920.             if (typeof (arr || 0).length !== 'number') {
  3921.               this.handleLiveChatActions66_(arr);
  3922.               return;
  3923.             }
  3924.             if (mzt > 1e9) mzt = 9;
  3925.             let tid = ++mzt;
  3926.  
  3927.             if (zarr === null) zarr = arr;
  3928.             else Array.prototype.push.apply(zarr, arr);
  3929.             arr = null;
  3930.  
  3931.             await new Promise(requestAnimationFrame);
  3932.  
  3933.             if (tid !== mzt || zarr === null) {
  3934.               return;
  3935.             }
  3936.  
  3937.             const carr = zarr;
  3938.             zarr = null;
  3939.  
  3940.             await Promise.resolve();
  3941.             this.handleLiveChatActions66_(carr);
  3942.             await Promise.resolve();
  3943.  
  3944.           }
  3945.  
  3946.           mclp.handleLiveChatActions_ = function (arr) {
  3947.  
  3948.             const cnt = this;
  3949.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3950.               cnt.handleLiveChatActions77_(arr).then(() => {
  3951.                 resolve();
  3952.               });
  3953.             });
  3954.           }
  3955.           console.log("handleLiveChatActions_", "OK");
  3956.         } else {
  3957.           console.log("handleLiveChatActions_", "NG");
  3958.         }
  3959.  
  3960.         mclp.hasUserJustInteracted11_ = () => {
  3961.           const t = dateNow();
  3962.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  3963.         }
  3964.  
  3965.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  3966.  
  3967.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  3968.  
  3969.           mclp.canScrollToBottom_ = function () {
  3970.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  3971.           }
  3972.  
  3973.           console.log("canScrollToBottom_", "OK");
  3974.         } else {
  3975.           console.log("canScrollToBottom_", "NG");
  3976.         }
  3977.  
  3978.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  3979.  
  3980.           mclp.isSmoothScrollEnabled_ = function () {
  3981.             return false;
  3982.           }
  3983.  
  3984.           mclp.maybeResizeScrollContainer_ = function () {
  3985.             //
  3986.           }
  3987.  
  3988.           mclp.refreshOffsetContainerHeight_ = function () {
  3989.             //
  3990.           }
  3991.  
  3992.           mclp.smoothScroll_ = function () {
  3993.             //
  3994.           }
  3995.  
  3996.           mclp.resetSmoothScroll_ = function () {
  3997.             //
  3998.           }
  3999.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  4000.         } else {
  4001.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  4002.         }
  4003.  
  4004.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4005.  
  4006.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  4007.           mclp.handleAddChatItemAction_ = function (a) {
  4008.             try {
  4009.               if (a && typeof a === 'object' && !('length' in a)) {
  4010.                 fixLiveChatItem(a.item, null);
  4011.                 console.assert(arguments[0] === a);
  4012.               }
  4013.             } catch (e) { console.warn(e) }
  4014.             return this.handleAddChatItemAction66_.apply(this, arguments);
  4015.           }
  4016.  
  4017.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4018.         } else {
  4019.  
  4020.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4021.         }
  4022.  
  4023.  
  4024.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4025.  
  4026.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  4027.           mclp.handleReplaceChatItemAction_ = function (a) {
  4028.             try {
  4029.               if (a && typeof a === 'object' && !('length' in a)) {
  4030.                 fixLiveChatItem(a.replacementItem, null);
  4031.                 console.assert(arguments[0] === a);
  4032.               }
  4033.             } catch (e) { console.warn(e) }
  4034.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  4035.           }
  4036.  
  4037.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4038.         } else {
  4039.  
  4040.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4041.         }
  4042.  
  4043.         console.log("[End]");
  4044.         console.groupEnd();
  4045.  
  4046.       }).catch(console.warn);
  4047.  
  4048.  
  4049.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  4050.  
  4051.         let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  4052.  
  4053.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  4054.  
  4055.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  4056.           let v = `${attrValue}`;
  4057.           // conside a ticker is 101px width
  4058.           // 1% = 1.01px
  4059.           // 0.2% = 0.202px
  4060.  
  4061.  
  4062.           const ratio1 = (yd.ratio * 100);
  4063.           if (ratio1 > -1) { // avoid NaN
  4064.  
  4065.             // countdownDurationMs
  4066.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  4067.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  4068.             // 150000 - 1%    <1% = 1.5s>
  4069.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  4070.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  4071.  
  4072.             // 99px * 5% = 4.95px
  4073.  
  4074.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  4075.  
  4076.  
  4077.             // 1% Duration
  4078.  
  4079.             let ratio2 = ratio1;
  4080.  
  4081.             const ydd = yd.data;
  4082.             if (ydd) {
  4083.  
  4084.               const d1 = ydd.durationSec;
  4085.               const d2 = ydd.fullDurationSec;
  4086.  
  4087.               // @ step timing [min. 0.2%]
  4088.               let numOfSteps = 500;
  4089.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  4090.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  4091.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  4092.                 else if (d2 > 100) numOfSteps = 100; // 1%
  4093.                 else if (d2 > 50) numOfSteps = 50; // 2%
  4094.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  4095.                 else numOfSteps = 20;
  4096.               }
  4097.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4098.               if (numOfSteps < 5) numOfSteps = 5;
  4099.  
  4100.               const rd = numOfSteps / 100.0;
  4101.  
  4102.               ratio2 = Math.round(ratio2 * rd) / rd;
  4103.  
  4104.               // ratio2 = Math.round(ratio2 * 5) / 5;
  4105.               ratio2 = ratio2.toFixed(1);
  4106.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  4107.  
  4108.               if (yd.__style_last__ === v) return;
  4109.               yd.__style_last__ = v;
  4110.               // do not consider any delay here.
  4111.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  4112.  
  4113.             }
  4114.           }
  4115.  
  4116.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  4117.  
  4118.  
  4119.         } else {
  4120.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  4121.         }
  4122.  
  4123.       };
  4124.  
  4125.  
  4126.       const fpTicker = (renderer) => {
  4127.         const cnt = renderer.inst || renderer;
  4128.         assertor(() => typeof (cnt || 0).is === 'string');
  4129.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  4130.         const container = (cnt.$ || 0).container;
  4131.         if (container) {
  4132.           assertor(() => (container || 0).nodeType === 1);
  4133.           assertor(() => typeof container.setAttribute === 'function');
  4134.           container.setAttribute = tickerContainerSetAttribute;
  4135.         } else {
  4136.           console.warn(`"container" does not exist in ${cnt.is}`);
  4137.         }
  4138.       };
  4139.  
  4140.  
  4141.       const tags = [
  4142.         "yt-live-chat-ticker-paid-message-item-renderer",
  4143.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  4144.         "yt-live-chat-ticker-renderer",
  4145.         "yt-live-chat-ticker-sponsor-item-renderer"
  4146.       ];
  4147.  
  4148.  
  4149.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  4150.  
  4151.         mightFirstCheckOnYtInit();
  4152.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  4153.         console.log("[Begin]");
  4154.  
  4155.         let dummyValueForStyleReturn = null;
  4156.  
  4157.         const genDummyValueForStyleReturn = () => {
  4158.           let s = `--nx:82;`
  4159.           let ro = {
  4160.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4161.             "implementsGoogStringTypedString": true
  4162.           };
  4163.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4164.           return ro;
  4165.         }
  4166.  
  4167.         const isCSSPropertySupported = () => {
  4168.  
  4169.           // @property --ticker-rtime
  4170.  
  4171.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return;
  4172.           const documentElement = document.documentElement;
  4173.           if (!documentElement) {
  4174.             console.warn('document.documentElement is not found');
  4175.             return false;
  4176.           }
  4177.           if (`${getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  4178.             return false;
  4179.           }
  4180.           return true;
  4181.  
  4182.         };
  4183.  
  4184.  
  4185.         let windowShownAt = -1;
  4186.         const setupEventForWindowShownAt = () => {
  4187.           window.addEventListener('visibilitychange', () => {
  4188.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  4189.             else windowShownAt = 0;
  4190.           }, false);
  4191.         }
  4192.  
  4193.         const dProto = {
  4194.  
  4195.           attachedForTickerInit: function () {
  4196.  
  4197.             fpTicker(this.hostElement || this);
  4198.             return this.attached77();
  4199.  
  4200.           },
  4201.  
  4202.  
  4203.           // doAnimator
  4204.  
  4205.           _makeAnimator: function () {
  4206.             if (this._r782) return;
  4207.             // if (!this.isAttached) return;
  4208.             if (!this._runnerAE) {
  4209.               /** @type {HTMLElement | null} */
  4210.               const aElement = (this.$ || 0).container;
  4211.               if (!aElement) return console.warn("this.$.container is undefined");
  4212.               const da = this.data;
  4213.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  4214.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  4215.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  4216.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  4217.  
  4218.               // if (!this.__tickerBackgroundInitialChecked__) {
  4219.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  4220.               //   console.log('__tickerBackgroundInitialChecked__')
  4221.               //   this._checkTickerBackgroundChanged();
  4222.               // }
  4223.  
  4224.               aElement.style.setProperty('--ticker-c1', c1);
  4225.               aElement.style.setProperty('--ticker-c2', c2);
  4226.               aElement.classList.add(runTickerClassName);
  4227.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4228.               // this._aeStartV = this.countdownMs;
  4229.               // this._aeStartT = this.countdownDurationMs;
  4230.               if (!(p >= 0 && p <= 100)) {
  4231.                 console.warn('incorrect time ratio', p);
  4232.               } else {
  4233.                 /*
  4234.                 const u0 = p.toFixed(4) + '%';
  4235.                 this._runnerAE = animate.call(aElement,
  4236.                   [
  4237.                     { '--ticker-rtime': u0 },
  4238.                     { '--ticker-rtime': '0%' }
  4239.                   ]
  4240.                   ,
  4241.                   {
  4242.                     fill: "forwards",
  4243.                     duration: this.countdownMs,
  4244.                     easing: "linear"
  4245.                   }
  4246.                 );
  4247.                 */
  4248.  
  4249.                 let timingFn = 'linear';
  4250.  
  4251.                 const totalDuration = this.countdownDurationMs;
  4252.  
  4253.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4254.  
  4255.                   // @ step timing [min. 0.2%]
  4256.                   let stepInterval = 0.2; // unit: %
  4257.                   if (totalDuration > 400000) stepInterval = 0.2;
  4258.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4259.                   else if (totalDuration > 100000) stepInterval = 1;
  4260.                   else if (totalDuration > 50000) stepInterval = 2;
  4261.                   else if (totalDuration > 25000) stepInterval = 5;
  4262.                   else stepInterval = 5;
  4263.  
  4264.                   let numOfSteps = Math.round(100 / stepInterval);
  4265.  
  4266.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4267.                   if (numOfSteps < 5) numOfSteps = 5;
  4268.  
  4269.                   timingFn = `steps(${numOfSteps}, end)`;
  4270.  
  4271.                 }
  4272.  
  4273.  
  4274.                 /** @type {Animation} */
  4275.                 const ae = animate.call(aElement,
  4276.                   [
  4277.                     { '--ticker-rtime': '100%' },
  4278.                     { '--ticker-rtime': '0%' }
  4279.                   ]
  4280.                   ,
  4281.                   {
  4282.                     fill: "forwards",
  4283.                     duration: totalDuration,
  4284.                     easing: timingFn
  4285.                   }
  4286.                 );
  4287.  
  4288.                 this._runnerAE = ae;
  4289.  
  4290.                 ae.onfinish = (event) => {
  4291.                   this.onfinish = null;
  4292.                   if (this._runnerAE !== ae) return;
  4293.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4294.                     this._aeFinished(event);
  4295.                   }
  4296.                 }
  4297.  
  4298.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4299.  
  4300.                 if (bq >= 0 && bq <= totalDuration) {
  4301.  
  4302.                   if (bq > totalDuration - 1) {
  4303.                     ae.currentTime = bq;
  4304.                     // setTimeout(() => {
  4305.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4306.                     // }, 1);
  4307.                   } else {
  4308.                     ae.currentTime = bq;
  4309.                   }
  4310.                 } else {
  4311.                   console.warn('Error on setting _runnerAE.currentTime!');
  4312.                 }
  4313.  
  4314.  
  4315.                 aeConstructor = ae.constructor; // constructor is from iframe
  4316.                 return ae;
  4317.               }
  4318.             } else {
  4319.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4320.               // assume just time update
  4321.               const ae = this._runnerAE;
  4322.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4323.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4324.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4325.               if (!(p >= 0 && p <= 100)) {
  4326.                 console.warn('incorrect time ratio', p);
  4327.               } else {
  4328.                 // let u0 = p.toFixed(4) + '%'
  4329.                 /*
  4330.                 ae.effect.setKeyframes([
  4331.                   { '--ticker-rtime': u0 },
  4332.                   { '--ticker-rtime': '0%' }
  4333.                 ]);
  4334.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4335.                 */
  4336.                 // ae.currentTime = 0;
  4337.  
  4338.  
  4339.  
  4340.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4341.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4342.  
  4343.                   this._runnerAE.currentTime = bq
  4344.                 } else {
  4345.                   console.warn('Error on setting _runnerAE.currentTime!');
  4346.                 }
  4347.  
  4348.  
  4349.                 ae.play();
  4350.                 return ae;
  4351.               }
  4352.             }
  4353.           },
  4354.  
  4355.           _aeFinished: function (event) {
  4356.  
  4357.             if (this._r782) return;
  4358.  
  4359.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4360.               this._throwOut();
  4361.               return;
  4362.             }
  4363.  
  4364.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4365.  
  4366.             let lc = window.performance.now();
  4367.             this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4368.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4369.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4370.             if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4371.  
  4372.             this.countdownMs = 0;
  4373.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  4374.  
  4375.             if (this.isAttached) {
  4376.               let fastRemoved = false;
  4377.               if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4378.                 // no animation if the video page is switched from background to foreground
  4379.                 // this.hostElement.style.display = 'none';
  4380.                 const id = (this.data || 0).id || 0;
  4381.                 if (!id) this.data = { id: 1 }
  4382.                 try {
  4383.                   this.requestRemoval();
  4384.                   fastRemoved = true;
  4385.                 } catch (e) {
  4386.  
  4387.                 }
  4388.               }
  4389.  
  4390.               if (!fastRemoved) {
  4391.                 "auto" === this.hostElement.style.width && this.setContainerWidth();
  4392.                 this.slideDown();
  4393.               }
  4394.             }
  4395.  
  4396.  
  4397.  
  4398.           },
  4399.  
  4400.  
  4401.           /** @type {()} */
  4402.           _throwOut: function () {
  4403.             this._r782 = 1;
  4404.             Promise.resolve().then(() => {
  4405.               if (typeof this.requestRemoval === 'function') {
  4406.                 const id = (this.data || 0).id;
  4407.                 if (!id) this.data = { id: 1 };
  4408.                 try {
  4409.                   this.requestRemoval();
  4410.                 } catch (e) { }
  4411.               }
  4412.               this.detached();
  4413.               this.data = null;
  4414.               this.countdownMs = 0;
  4415.               this.lastCountdownTimeMs = null;
  4416.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  4417.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  4418.               if (this.__dataReady === true) this.__dataReady = false;
  4419.               const hm = this.hostElement || this;
  4420.               if (hm.parentNode) hm.remove();
  4421.               if (hm.firstChild) hm.textContent = '';
  4422.             }).catch(e => {
  4423.               console.warn(e);
  4424.             });
  4425.           },
  4426.  
  4427.  
  4428.           // doTimerFnModification
  4429.  
  4430.  
  4431.           /** @type {(a, b)} */
  4432.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4433.             try {
  4434.               // a.durationSec [s] => countdownMs [ms]
  4435.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4436.               // lastCountdownTimeMs => raf ongoing
  4437.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4438.  
  4439.               if (this._r782) return;
  4440.  
  4441.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4442.                 this._throwOut();
  4443.                 return;
  4444.               }
  4445.  
  4446.               // TimerFnModA
  4447.  
  4448.               b = void 0 === b ? 0 : b;
  4449.               if (void 0 !== a) {
  4450.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4451.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4452.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4453.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  4454.                   this.rafId = 1
  4455.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4456.                   this.detlaSincePausedSecs = 0;
  4457.                   const ae = this._makeAnimator();
  4458.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4459.  
  4460.  
  4461.                   if (isPlayProgressTriggered && this.isAnimationPaused !== true && this.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__) {
  4462.  
  4463.  
  4464.  
  4465.  
  4466.                     this.playerProgressSec = lastPlayerProgress > 0 ? lastPlayerProgress : 0; // save the progress first
  4467.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4468.                     this.detlaSincePausedSecs = 0;
  4469.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4470.  
  4471.                     relayPromise = relayPromise || new PromiseExternal();
  4472.  
  4473.                     relayPromise.then(() => {
  4474.                       if (this.isAttached === true && this.countdownDurationMs > 0 && this.isAnimationPaused === true && this.isReplayPaused !== true) {
  4475.                         this.isAnimationPaused = false;
  4476.                       }
  4477.                     });
  4478.  
  4479.  
  4480.                   }
  4481.  
  4482.  
  4483.  
  4484.                 }
  4485.               }
  4486.  
  4487.             } catch (e) {
  4488.               console.warn(e);
  4489.             }
  4490.  
  4491.           },
  4492.  
  4493.  
  4494.  
  4495.           /** @type {(a, b)} */
  4496.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4497.             try {
  4498.               // a.durationSec [s] => countdownMs [ms]
  4499.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4500.               // lastCountdownTimeMs => raf ongoing
  4501.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4502.  
  4503.               if (this._r782) return;
  4504.  
  4505.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4506.                 this._throwOut();
  4507.                 return;
  4508.               }
  4509.  
  4510.               // TimerFnModT
  4511.  
  4512.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4513.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4514.               b = void 0 === b ? 0 : b;
  4515.               void 0 !== a && (this.countdownMs = 1E3 * a,
  4516.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4517.                 this.ratio = 1,
  4518.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  4519.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4520.  
  4521.             } catch (e) {
  4522.               console.warn(e);
  4523.             }
  4524.  
  4525.           },
  4526.  
  4527.  
  4528.           /** @type {(a,)} */
  4529.           updateTimeoutForTimerFnModA: function (a) {
  4530.  
  4531.             try {
  4532.  
  4533.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4534.  
  4535.               if (this._r782) return;
  4536.  
  4537.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4538.                 this._throwOut();
  4539.                 return;
  4540.               }
  4541.  
  4542.               // TimerFnModA
  4543.  
  4544.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4545.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4546.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4547.               }
  4548.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4549.               if (this.isAttached && this.countdownMs) {
  4550.                 this.lastCountdownTimeMs = a
  4551.                 const ae = this._makeAnimator(); // request raf
  4552.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4553.               } else {
  4554.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4555.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4556.                     this.slideDown()));
  4557.               }
  4558.  
  4559.             } catch (e) {
  4560.               console.warn(e);
  4561.             }
  4562.  
  4563.  
  4564.           },
  4565.  
  4566.           /** @type {(a,)} */
  4567.           updateTimeoutForTimerFnModT: function (a) {
  4568.  
  4569.             try {
  4570.  
  4571.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4572.  
  4573.               if (this._r782) return;
  4574.  
  4575.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4576.                 this._throwOut();
  4577.                 return;
  4578.               }
  4579.  
  4580.               // TimerFnModT
  4581.  
  4582.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4583.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4584.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4585.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4586.               }
  4587.               this.ratio = this.countdownMs / this.countdownDurationMs;
  4588.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4589.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4590.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4591.                     this.slideDown()))
  4592.  
  4593.  
  4594.             } catch (e) {
  4595.               console.warn(e);
  4596.             }
  4597.           },
  4598.  
  4599.           /** @type {(a,b)} */
  4600.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  4601.  
  4602.             if (this._r782) return;
  4603.  
  4604.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4605.               this._throwOut();
  4606.               return;
  4607.             }
  4608.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4609.             this._forceNoDetlaSincePausedSecs783 = 0;
  4610.  
  4611.             Promise.resolve().then(() => {
  4612.  
  4613.               if (a) {
  4614.  
  4615.                 if (this._runnerAE && this._runnerAE.playState === 'running') {
  4616.  
  4617.                   this._runnerAE.pause()
  4618.                   let lc = window.performance.now();
  4619.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4620.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4621.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4622.                 }
  4623.  
  4624.               } else if (!a && b) {
  4625.  
  4626.  
  4627.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4628.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4629.                 this.detlaSincePausedSecs = 0;
  4630.                 this.updateTimeout(a);
  4631.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  4632.  
  4633.               }
  4634.  
  4635.  
  4636.             }).catch(e => {
  4637.               console.log(e);
  4638.             });
  4639.  
  4640.  
  4641.  
  4642.           },
  4643.  
  4644.  
  4645.           /** @type {(a,b)} */
  4646.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  4647.  
  4648.             if (this._r782) return;
  4649.  
  4650.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4651.               this._throwOut();
  4652.               return;
  4653.             }
  4654.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4655.             this._forceNoDetlaSincePausedSecs783 = 0;
  4656.  
  4657.             Promise.resolve().then(() => {
  4658.  
  4659.               // TimerFnModT
  4660.  
  4661.               // ez++;
  4662.               // if(ez> 1e9) ez=9;
  4663.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4664.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4665.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4666.                   this.detlaSincePausedSecs = 0),
  4667.                 this.boundUpdateTimeout37_(a),
  4668.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  4669.  
  4670.  
  4671.             }).catch(e => {
  4672.               console.log(e);
  4673.             });
  4674.  
  4675.  
  4676.  
  4677.           },
  4678.  
  4679.  
  4680.           /** @type {(a,b)} */
  4681.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  4682.  
  4683.             if (this._r782) return;
  4684.  
  4685.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4686.               this._throwOut();
  4687.               return;
  4688.             }
  4689.  
  4690.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  4691.  
  4692.           },
  4693.  
  4694.  
  4695.  
  4696.           /** @type {()} */
  4697.           handlePauseReplayForPlaybackProgressState: function () {
  4698.             if (!playerEventsByIframeRelay) return this.handlePauseReplay66.apply(this, arguments);
  4699.  
  4700.             if (onPlayStateChangePromise) {
  4701.  
  4702.               if (this.rtu > 1e9) this.rtu = this.rtu % 1e4;
  4703.               const tid = ++this.rtu;
  4704.  
  4705.               onPlayStateChangePromise.then(() => {
  4706.                 if (tid === this.rtu && !onPlayStateChangePromise) this.handlePauseReplay.apply(this, arguments);
  4707.               });
  4708.  
  4709.               return;
  4710.             }
  4711.  
  4712.             if (playerState !== 2) return;
  4713.             if (this.isAttached) {
  4714.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  4715.               const tid = ++this.rtk;
  4716.               const tc = relayCount;
  4717.               getRafPromiseForTickers().then(() => {
  4718.                 if (tid === this.rtk && tc === relayCount && playerState === 2 && _playerState === playerState) {
  4719.                   this.handlePauseReplay66();
  4720.                 }
  4721.  
  4722.               })
  4723.             }
  4724.           },
  4725.  
  4726.           /** @type {()} */
  4727.           handleResumeReplayForPlaybackProgressState: function () {
  4728.             if (!playerEventsByIframeRelay) return this.handleResumeReplay66.apply(this, arguments);
  4729.  
  4730.  
  4731.             if (onPlayStateChangePromise) {
  4732.  
  4733.               if (this.rtv > 1e9) this.rtv = this.rtv % 1e4;
  4734.               const tid = ++this.rtv;
  4735.  
  4736.               onPlayStateChangePromise.then(() => {
  4737.                 if (tid === this.rtv && !onPlayStateChangePromise) this.handleResumeReplay.apply(this, arguments);
  4738.               });
  4739.  
  4740.               return;
  4741.             }
  4742.  
  4743.  
  4744.             if (playerState !== 1) return;
  4745.             if (this.isAttached) {
  4746.               const tc = relayCount;
  4747.  
  4748.               relayPromise = relayPromise || new PromiseExternal();
  4749.               relayPromise.then(() => {
  4750.                 if (relayCount > tc && playerState === 1 && _playerState === playerState) {
  4751.                   this.handleResumeReplay66();
  4752.                 }
  4753.               });
  4754.             }
  4755.           },
  4756.  
  4757.           /** @type {(a,)} */
  4758.           handleReplayProgressForPlaybackProgressState: function (a) {
  4759.             if (this.isAttached) {
  4760.               const tid = ++this.rtk;
  4761.               getRafPromiseForTickers().then(() => {
  4762.                 if (tid === this.rtk) {
  4763.                   this.handleReplayProgress66(a);
  4764.                 }
  4765.               })
  4766.             }
  4767.           }
  4768.  
  4769.  
  4770.         }
  4771.  
  4772.  
  4773.         for (const tag of tags) { // ##tag##
  4774.           const dummy = document.createElement(tag);
  4775.  
  4776.           const cProto = getProto(dummy);
  4777.           if (!cProto || !cProto.attached) {
  4778.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4779.             continue;
  4780.           }
  4781.  
  4782.           cProto.attached77 = cProto.attached;
  4783.  
  4784.           cProto.attached = dProto.attachedForTickerInit;
  4785.  
  4786.           let rafHackState = 0;
  4787.  
  4788.           let isTimingFunctionHackable = false;
  4789.  
  4790.           let urt = 0;
  4791.  
  4792.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  4793.  
  4794.             // console.log('startCountdown', typeof cProto.startCountdown)
  4795.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  4796.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  4797.  
  4798.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  4799.  
  4800.           } else {
  4801.             console.log(`Skip Timing Function Modification for ${tag}`);
  4802.             continue;
  4803.           }
  4804.  
  4805.  
  4806.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  4807.  
  4808.             // cancelable - this.rafId < isAnimationPausedChanged >
  4809.             rafHackState = 1;
  4810.  
  4811.             if (isTimingFunctionHackable) {
  4812.               rafHackState = 2;
  4813.  
  4814.             } else {
  4815.               rafHackState = 4;
  4816.             }
  4817.  
  4818.           }
  4819.  
  4820.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  4821.  
  4822.           const doRAFHack = rafHackState === 2;
  4823.  
  4824.           cProto._throwOut = dProto._throwOut;
  4825.  
  4826.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  4827.  
  4828.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  4829.  
  4830.  
  4831.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  4832.  
  4833.  
  4834.  
  4835.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  4836.               urt++;
  4837.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  4838.             } else {
  4839.               console.log('Error for setting cProto.handlePauseReplay', tag)
  4840.             }
  4841.  
  4842.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  4843.               urt++;
  4844.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  4845.             } else {
  4846.               console.log('Error for setting cProto.handleResumeReplay', tag)
  4847.             }
  4848.  
  4849.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  4850.               urt++;
  4851.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  4852.             } else {
  4853.               console.log('Error for setting cProto.handleReplayProgress', tag)
  4854.             }
  4855.  
  4856.  
  4857.  
  4858.           }
  4859.  
  4860.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  4861.           cProto.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__ = ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED;
  4862.  
  4863.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  4864.  
  4865.             cProto.rtk = 0;
  4866.             cProto.rtu = 0;
  4867.             cProto.rtv = 0;
  4868.  
  4869.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  4870.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  4871.  
  4872.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  4873.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  4874.  
  4875.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  4876.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  4877.  
  4878.           }
  4879.  
  4880.           const doTimerFnModification = (doRAFHack || doAnimator);
  4881.  
  4882.           if (doAnimator && windowShownAt < 0) {
  4883.             windowShownAt = 0;
  4884.             setupEventForWindowShownAt();
  4885.           }
  4886.  
  4887.           if (doTimerFnModification) {
  4888.  
  4889.             cProto.startCountdown = (
  4890.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  4891.             );
  4892.  
  4893.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4894.             cProto.updateTimeout = (
  4895.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  4896.             );
  4897.  
  4898.  
  4899.             // let ez = 0;
  4900.             cProto.isAnimationPausedChanged = (
  4901.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  4902.             );
  4903.  
  4904.           }
  4905.  
  4906.           if (doAnimator) {
  4907.  
  4908.             assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  4909.  
  4910.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  4911.  
  4912.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  4913.  
  4914.           }
  4915.  
  4916.           if (doTimerFnModification === true) hasTimerModified = true;
  4917.  
  4918.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  4919.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  4920.           }
  4921.  
  4922.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  4923.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  4924.           }
  4925.  
  4926.         }
  4927.  
  4928.         const selector = tags.join(', ');
  4929.         const elements = document.querySelectorAll(selector);
  4930.         if (elements.length >= 1) {
  4931.           for (const elm of elements) {
  4932.             if ((elm || elm.inst).isAttached === true) {
  4933.               fpTicker(elm);
  4934.             }
  4935.           }
  4936.         }
  4937.  
  4938.         console.log("[End]");
  4939.         console.groupEnd();
  4940.  
  4941.  
  4942.       }).catch(console.warn);
  4943.  
  4944.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  4945.  
  4946.         mightFirstCheckOnYtInit();
  4947.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  4948.         console.log("[Begin]");
  4949.         (() => {
  4950.  
  4951.           /* pending!!
  4952.  
  4953.           handleLiveChatAction
  4954.  
  4955.           removeTickerItemById
  4956.  
  4957.           _itemsChanged
  4958.           itemsChanged
  4959.  
  4960.           handleMarkChatItemAsDeletedAction
  4961.           handleMarkChatItemsByAuthorAsDeletedAction
  4962.           handleRemoveChatItemByAuthorAction
  4963.  
  4964.  
  4965.           */
  4966.  
  4967.           const tag = "yt-live-chat-ticker-renderer"
  4968.           const dummy = document.createElement(tag);
  4969.  
  4970.           const cProto = getProto(dummy);
  4971.           if (!cProto || !cProto.attached) {
  4972.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4973.             return;
  4974.           }
  4975.  
  4976.           if (RAF_FIX_keepScrollClamped) {
  4977.  
  4978.             // to be improved
  4979.  
  4980.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  4981.  
  4982.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  4983.               cProto.keepScrollClamped = function () {
  4984.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  4985.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  4986.                 this.maybeClampScroll()
  4987.               }
  4988.  
  4989.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  4990.             } else {
  4991.  
  4992.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  4993.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  4994.             }
  4995.  
  4996.           }
  4997.  
  4998.  
  4999.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.44.32' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  5000.             // to be replaced by animator
  5001.  
  5002.             cProto.startScrolling = function (a) {
  5003.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  5004.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  5005.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  5006.               this.scrollRatePixelsPerSecond = a;
  5007.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5008.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  5009.             };
  5010.  
  5011.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  5012.  
  5013.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  5014.               const b = a - (this.lastFrameTimestamp || 0);
  5015.               const rate = this.scrollRatePixelsPerSecond
  5016.               const q = b / 1E3 * (rate || 0);
  5017.  
  5018.               const sl = this.$.items.scrollLeft;
  5019.               // console.log(rate, sl, q)
  5020.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  5021.  
  5022.               } else if (q > -1e-5 && q < 1e-5) {
  5023.  
  5024.               } else {
  5025.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  5026.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  5027.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  5028.                 if (cond1 || cond2 || cond3) {
  5029.                   this.$.items.scrollLeft += q;
  5030.                   this.maybeClampScroll();
  5031.                   this.updateArrows();
  5032.                 }
  5033.               }
  5034.  
  5035.               this.lastFrameTimestamp = a;
  5036.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5037.               0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5038.             } : function (a) {
  5039.               const b = a - (this.lastFrameTimestamp || 0);
  5040.               this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  5041.               this.maybeClampScroll();
  5042.               this.updateArrows();
  5043.               this.lastFrameTimestamp = a;
  5044.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5045.               0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5046.             };
  5047.  
  5048.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  5049.           } else {
  5050.             assertor(() => fnIntegrity(cProto.startScrolling, '1.44.32'));
  5051.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  5052.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  5053.           }
  5054.  
  5055.  
  5056.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  5057.  
  5058.             cProto.attached37 = cProto.attached;
  5059.             cProto.detached37 = cProto.detached;
  5060.  
  5061.             let naohzId = 0;
  5062.             cProto.__naohzId__ = 0;
  5063.             cProto.attached = function () {
  5064.               Promise.resolve().then(() => {
  5065.  
  5066.                 const hostElement = this.hostElement || this;
  5067.                 if (!(hostElement instanceof HTMLElement)) return;
  5068.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  5069.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  5070.                 // or #chat-messages
  5071.                 if (!ironPage) return;
  5072.  
  5073.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5074.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  5075.                 this.__naohzId__ = ++naohzId;
  5076.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  5077.  
  5078.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5079.  
  5080.               });
  5081.               return this.attached37.apply(this, arguments);
  5082.             };
  5083.             cProto.detached = function () {
  5084.               Promise.resolve().then(() => {
  5085.  
  5086.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  5087.                 if (!ironPage) return;
  5088.  
  5089.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5090.  
  5091.               });
  5092.               return this.detached37.apply(this, arguments);
  5093.             };
  5094.  
  5095.             const clickFade = (u) => {
  5096.               u.click();
  5097.             };
  5098.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  5099.  
  5100.               const target = (evt || 0).target || 0;
  5101.               if (!target) return;
  5102.  
  5103.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  5104.                 const is = p.is;
  5105.                 if (typeof is === 'string' && is) {
  5106.  
  5107.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  5108.                     return;
  5109.                   }
  5110.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  5111.                     const fade = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  5112.                     if (fade) {
  5113.                       Promise.resolve(fade).then(clickFade);
  5114.                       evt && evt.stopPropagation();
  5115.                     }
  5116.                     return;
  5117.                   }
  5118.                   if (is !== 'yt-live-chat-ticker-renderer') {
  5119.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  5120.                     if (!is.endsWith('-renderer')) return;
  5121.                   }
  5122.  
  5123.                 } else {
  5124.                   if ((p.nodeName || '').includes('BUTTON')) return;
  5125.                 }
  5126.  
  5127.               }
  5128.             };
  5129.  
  5130.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  5131.  
  5132.           } else {
  5133.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  5134.           }
  5135.  
  5136.  
  5137.         })();
  5138.  
  5139.         console.log("[End]");
  5140.  
  5141.         console.groupEnd();
  5142.  
  5143.       }).catch(console.warn);
  5144.  
  5145.  
  5146.       if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  5147.  
  5148.  
  5149.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  5150.  
  5151.           mightFirstCheckOnYtInit();
  5152.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  5153.           console.log("[Begin]");
  5154.           (() => {
  5155.  
  5156.             const tag = "yt-live-chat-message-input-renderer"
  5157.             const dummy = document.createElement(tag);
  5158.  
  5159.             const cProto = getProto(dummy);
  5160.             if (!cProto || !cProto.attached) {
  5161.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5162.               return;
  5163.             }
  5164.  
  5165.             let doHack = false;
  5166.             if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  5167.  
  5168.               // not cancellable
  5169.  
  5170.  
  5171.               doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  5172.  
  5173.             }
  5174.  
  5175.             if (doHack) {
  5176.  
  5177.               cProto.handleTimeout = function (a) {
  5178.                 console.log('cProto.handleTimeout', tag)
  5179.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5180.                 this.timeoutDurationMs = this.timeoutMs = a;
  5181.                 this.countdownRatio = 1;
  5182.                 0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  5183.               };
  5184.               cProto.updateTimeout = function (a) {
  5185.                 console.log('cProto.updateTimeout', tag)
  5186.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5187.                 this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  5188.                   this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  5189.                 this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  5190.                   rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  5191.               };
  5192.  
  5193.               console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  5194.             } else {
  5195.  
  5196.               console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  5197.               console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  5198.  
  5199.               console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  5200.             }
  5201.  
  5202.           })();
  5203.  
  5204.           console.log("[End]");
  5205.  
  5206.           console.groupEnd();
  5207.  
  5208.  
  5209.         })
  5210.  
  5211.  
  5212.       }
  5213.  
  5214.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  5215.  
  5216.  
  5217.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  5218.  
  5219.           mightFirstCheckOnYtInit();
  5220.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  5221.           console.log("[Begin]");
  5222.           (() => {
  5223.  
  5224.             const tag = "yt-emoji-picker-renderer"
  5225.             const dummy = document.createElement(tag);
  5226.  
  5227.             const cProto = getProto(dummy);
  5228.             if (!cProto || !cProto.attached) {
  5229.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5230.               return;
  5231.             }
  5232.  
  5233.             let doHack = false;
  5234.             if (typeof cProto.animateScroll_ === 'function') {
  5235.  
  5236.               // not cancellable
  5237.               console.log('animateScroll_', typeof cProto.animateScroll_)
  5238.  
  5239.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  5240.  
  5241.             }
  5242.  
  5243.             if (doHack) {
  5244.  
  5245.               const querySelector = HTMLElement.prototype.querySelector;
  5246.               const U = (element) => ({
  5247.                 querySelector: (selector) => querySelector.call(element, selector)
  5248.               });
  5249.  
  5250.               cProto.animateScroll_ = function (a) {
  5251.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  5252.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  5253.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  5254.                 a -= this.lastAnimationTime_;
  5255.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  5256.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  5257.                     this.animationEnd_ = this.animationStart_ = null,
  5258.                     this.lastAnimationTime_ = 0);
  5259.                 this.updateButtons_()
  5260.               }
  5261.  
  5262.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  5263.             } else {
  5264.  
  5265.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  5266.             }
  5267.  
  5268.           })();
  5269.  
  5270.           console.log("[End]");
  5271.  
  5272.           console.groupEnd();
  5273.         });
  5274.       }
  5275.  
  5276.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  5277.  
  5278.  
  5279.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  5280.  
  5281.           mightFirstCheckOnYtInit();
  5282.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  5283.           console.log("[Begin]");
  5284.           (() => {
  5285.  
  5286.             const tag = "yt-live-chat-docked-message"
  5287.             const dummy = document.createElement(tag);
  5288.  
  5289.             const cProto = getProto(dummy);
  5290.             if (!cProto || !cProto.attached) {
  5291.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5292.               return;
  5293.             }
  5294.  
  5295.             let doHack = false;
  5296.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  5297.  
  5298.               // cancelable - this.intersectRAF <detached>
  5299.               // yt-live-chat-docked-message
  5300.               // boundCheckIntersections <-> checkIntersections
  5301.               // onDockableMessagesChanged
  5302.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  5303.  
  5304.               console.log('detached', typeof cProto.detached)
  5305.               console.log('checkIntersections', typeof cProto.checkIntersections)
  5306.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  5307.  
  5308.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  5309.  
  5310.             }
  5311.  
  5312.             if (doHack) {
  5313.  
  5314.               cProto.checkIntersections = function () {
  5315.                 // console.log('cProto.checkIntersections', tag)
  5316.                 if (this.dockableMessages.length) {
  5317.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  5318.                   let a = this.dockableMessages[0]
  5319.                     , b = this.hostElement.getBoundingClientRect();
  5320.                   a = a.getBoundingClientRect();
  5321.                   let c = a.top - b.top
  5322.                     , d = 8 >= c;
  5323.                   c = 8 >= c - this.hostElement.clientHeight;
  5324.                   if (d) {
  5325.                     let e;
  5326.                     for (; d;) {
  5327.                       e = this.dockableMessages.shift();
  5328.                       d = this.dockableMessages[0];
  5329.                       if (!d)
  5330.                         break;
  5331.                       d = d.getBoundingClientRect();
  5332.                       c = d.top - b.top;
  5333.                       let f = 8 >= c;
  5334.                       if (8 >= c - a.height)
  5335.                         if (f)
  5336.                           a = d;
  5337.                         else
  5338.                           return;
  5339.                       d = f
  5340.                     }
  5341.                     this.dock(e)
  5342.                   } else
  5343.                     c && this.dockedItem && this.clear()
  5344.                 } else
  5345.                   this.intersectRAF = 0
  5346.               }
  5347.  
  5348.               cProto.onDockableMessagesChanged = function () {
  5349.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  5350.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  5351.               }
  5352.  
  5353.               cProto.detached = function () {
  5354.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  5355.               }
  5356.  
  5357.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  5358.             } else {
  5359.  
  5360.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  5361.             }
  5362.  
  5363.           })();
  5364.  
  5365.           console.log("[End]");
  5366.  
  5367.           console.groupEnd();
  5368.  
  5369.         }).catch(console.warn);
  5370.  
  5371.       }
  5372.  
  5373.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  5374.  
  5375.  
  5376.         customElements.whenDefined("yt-img-shadow").then(() => {
  5377.  
  5378.           mightFirstCheckOnYtInit();
  5379.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  5380.           console.log("[Begin]");
  5381.           (() => {
  5382.  
  5383.             const tag = "yt-img-shadow"
  5384.             const dummy = document.createElement(tag);
  5385.  
  5386.             const cProto = getProto(dummy);
  5387.             if (!cProto || !cProto.attached) {
  5388.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5389.               return;
  5390.             }
  5391.  
  5392.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  5393.  
  5394.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  5395.               cProto.thumbnailChanged_ = function (a) {
  5396.  
  5397.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  5398.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  5399.  
  5400.                 return this.thumbnailChanged66_.apply(this, arguments)
  5401.  
  5402.               }
  5403.               console.log("cProto.thumbnailChanged_ - OK");
  5404.  
  5405.             } else {
  5406.               console.log("cProto.thumbnailChanged_ - NG");
  5407.  
  5408.             }
  5409.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  5410.  
  5411.               cProto.setSrc66_ = cProto.setSrc_;
  5412.               cProto.setSrc_ = function (a) {
  5413.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  5414.                 return this.setSrc66_.apply(this, arguments)
  5415.               }
  5416.  
  5417.               console.log("cProto.setSrc_ - OK");
  5418.             } else {
  5419.  
  5420.               console.log("cProto.setSrc_ - NG");
  5421.             }
  5422.  
  5423.           })();
  5424.  
  5425.           console.log("[End]");
  5426.  
  5427.           console.groupEnd();
  5428.  
  5429.         }).catch(console.warn);
  5430.  
  5431.       }
  5432.  
  5433.       if (FIX_THUMBNAIL_DATACHANGED) {
  5434.  
  5435.  
  5436.  
  5437.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  5438.  
  5439.           mightFirstCheckOnYtInit();
  5440.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  5441.           console.log("[Begin]");
  5442.           (() => {
  5443.  
  5444.             const tag = "yt-live-chat-author-badge-renderer"
  5445.             const dummy = document.createElement(tag);
  5446.  
  5447.             const cProto = getProto(dummy);
  5448.             if (!cProto || !cProto.attached) {
  5449.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5450.               return;
  5451.             }
  5452.  
  5453.  
  5454.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  5455.  
  5456.  
  5457.  
  5458.               cProto.dataChanged86 = cProto.dataChanged;
  5459.               cProto.dataChanged = function (a) {
  5460.  
  5461.                 /*
  5462.  
  5463.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  5464.                       b.removeChild(b.firstChild);
  5465.                   if (a)
  5466.                       if (a.icon) {
  5467.                           var c = document.createElement("yt-icon");
  5468.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  5469.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  5470.                           b.appendChild(c)
  5471.                       } else if (a.customThumbnail) {
  5472.                           c = document.createElement("img");
  5473.                           var d;
  5474.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5475.                           b.appendChild(c),
  5476.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  5477.                       }
  5478.  
  5479.                 */
  5480.  
  5481.                 const image = ((this || 0).$ || 0).image
  5482.                 if (image && a && image.firstElementChild) {
  5483.                   let exisiting = image.firstElementChild;
  5484.                   if (exisiting === image.lastElementChild) {
  5485.  
  5486.  
  5487.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  5488.  
  5489.                       let c = exisiting;
  5490.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  5491.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  5492.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  5493.                       } else {
  5494.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  5495.                         if (c.icon !== p) c.icon = p;
  5496.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  5497.                       }
  5498.                       return;
  5499.  
  5500.  
  5501.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  5502.  
  5503.                       let c = exisiting;
  5504.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  5505.  
  5506.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  5507.                         return;
  5508.                       }
  5509.                       /*
  5510.  
  5511.                       var d;
  5512.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5513.  
  5514.  
  5515.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  5516.                         */
  5517.                     }
  5518.  
  5519.  
  5520.                   }
  5521.                 }
  5522.                 return this.dataChanged86.apply(this, arguments)
  5523.  
  5524.               }
  5525.               console.log("cProto.dataChanged - OK");
  5526.  
  5527.             } else {
  5528.               assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  5529.               console.log("cProto.dataChanged - NG");
  5530.  
  5531.             }
  5532.  
  5533.           })();
  5534.  
  5535.           console.log("[End]");
  5536.  
  5537.           console.groupEnd();
  5538.  
  5539.         }).catch(console.warn);
  5540.  
  5541.  
  5542.       }
  5543.  
  5544.  
  5545.       if (FIX_TOOLTIP_DISPLAY) {
  5546.  
  5547.  
  5548.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  5549.  
  5550.           mightFirstCheckOnYtInit();
  5551.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  5552.           console.log("[Begin]");
  5553.           (() => {
  5554.  
  5555.             const tag = "tp-yt-paper-tooltip"
  5556.             const dummy = document.createElement(tag);
  5557.  
  5558.             const cProto = getProto(dummy);
  5559.             if (!cProto || !cProto.attached) {
  5560.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5561.               return;
  5562.             }
  5563.  
  5564.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  5565.  
  5566.               cProto._readyClients43 = cProto._readyClients;
  5567.               cProto._readyClients = function () {
  5568.                 let r = cProto._readyClients43.apply(this, arguments);
  5569.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  5570.                 return r;
  5571.               }
  5572.  
  5573.               console.log("_readyClients - OK");
  5574.  
  5575.             } else {
  5576.               console.log("_readyClients - NG");
  5577.  
  5578.             }
  5579.  
  5580.             if (typeof cProto.show === 'function' && !cProto.show17) {
  5581.               cProto.show17 = cProto.show;
  5582.               cProto.show = function () {
  5583.  
  5584.                 let r = this.show17.apply(this, arguments);
  5585.                 this._showing === true && Promise.resolve().then(() => {
  5586.                   const tooltip = (this.$ || 0).tooltip;
  5587.  
  5588.                   if (tooltip && tooltip.firstElementChild === null) {
  5589.                     let text = tooltip.textContent;
  5590.                     if (typeof text === 'string' && text.length >= 2) {
  5591.                       tooltip.textContent = text.trim();
  5592.                     }
  5593.                   }
  5594.                 }).catch(console.warn)
  5595.                 return r;
  5596.               }
  5597.  
  5598.               console.log("trim tooltip content - OK");
  5599.  
  5600.             } else {
  5601.               console.log("trim tooltip content - NG");
  5602.  
  5603.             }
  5604.  
  5605.             /*
  5606.             cProto.updatePosition61 = cProto.updatePosition;
  5607.  
  5608.  
  5609.             cProto.updatePosition = function () {
  5610.  
  5611.  
  5612.               if (this._target && this.offsetParent) {
  5613.                 var a = this.offset;
  5614.                 14 != this.marginTop && 14 == this.offset && (a = this.marginTop);
  5615.                 var b = this.offsetParent.getBoundingClientRect()
  5616.                   , c = this._target.getBoundingClientRect()
  5617.                   , d = this.getBoundingClientRect()
  5618.                   , e = (c.width - d.width) / 2
  5619.                   , h = (c.height - d.height) / 2
  5620.                   , l = c.left - b.left
  5621.                   , m = c.top - b.top;
  5622.                 switch (this.position) {
  5623.                   case "top":
  5624.                     var p = l + e;
  5625.                     var q = m - d.height - a;
  5626.                     break;
  5627.                   case "bottom":
  5628.                     p = l + e;
  5629.                     q = m + c.height + a;
  5630.                     break;
  5631.                   case "left":
  5632.                     p = l - d.width - a;
  5633.                     q = m + h;
  5634.                     break;
  5635.                   case "right":
  5636.                     p = l + c.width + a,
  5637.                       q = m + h;
  5638.                 }
  5639.  
  5640.               if(this.ascee) {
  5641.                 this.fitToVisibleBounds = false;
  5642.               }
  5643.                 this.fitToVisibleBounds ? (b.left + p + d.width > window.innerWidth ? (this.style.right = "0px",
  5644.                   this.style.left = "auto") : (this.style.left = Math.max(0, p) + "px",
  5645.                     this.style.right = "auto"),
  5646.                   b.top + q + d.height > window.innerHeight ? (this.style.bottom = b.height + "px",
  5647.                     this.style.top = "auto") : (this.style.top = Math.max(-b.top, q) + "px",
  5648.                       this.style.bottom = "auto")) : (this.style.left = p + "px",
  5649.                         this.style.top = q + "px")
  5650.               }
  5651.             }
  5652.  
  5653.             cProto.updateStyles61 = cProto.updateStyles;
  5654.             cProto.updateStyles= function(){
  5655.               if(this.ascee) return;
  5656.               return this.updateStyles61.apply(this,arguments);
  5657.             }
  5658.             */
  5659.  
  5660.  
  5661.           })();
  5662.  
  5663.           console.log("[End]");
  5664.  
  5665.           console.groupEnd();
  5666.  
  5667.         }).catch(console.warn);
  5668.  
  5669.  
  5670.  
  5671.       }
  5672.  
  5673.  
  5674.  
  5675.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  5676.  
  5677.  
  5678.         const hookDocumentMouseDownSetupFn = () => {
  5679.  
  5680.  
  5681.  
  5682.           let muzTimestamp = 0;
  5683.           let nszDropdown = null;
  5684.  
  5685.  
  5686.  
  5687.           const handlerObject = {
  5688.  
  5689.             // mdHandler282 : function (evt) {
  5690.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5691.             //   if (!evt || !evt.isTrusted) return;
  5692.             //   muzTimestamp = 0;
  5693.             //   nszDropdown = null;
  5694.  
  5695.             //   const hostElement = this.hostElement || this;
  5696.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  5697.             //   if (!hostElement.contains(evt.target)) return;
  5698.             //   let targetDropDown = null;
  5699.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  5700.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  5701.             //       targetDropDown = dropdown;
  5702.             //     }
  5703.             //   }
  5704.             //   if ((nszDropdown = targetDropDown)) {
  5705.             //     muzTimestamp = Date.now();
  5706.             //     evt.stopImmediatePropagation();
  5707.             //     evt.stopPropagation();
  5708.             //   }
  5709.  
  5710.             // },
  5711.  
  5712.  
  5713.             muHandler282: function (evt) {
  5714.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5715.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5716.               const dropdown = nszDropdown;
  5717.               muzTimestamp = 0;
  5718.               nszDropdown = null;
  5719.  
  5720.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  5721.               const hostElement = kurMPC.hostElement || kurMPC;
  5722.               if (!hostElement.hasAttribute('menu-visible')) return;
  5723.  
  5724.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  5725.               if (chatBanner) return;
  5726.  
  5727.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  5728.  
  5729.                 /*
  5730.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5731.                 if(parentButton) return;
  5732.                 */
  5733.  
  5734.                 muzTimestamp = Date.now();
  5735.                 evt.stopImmediatePropagation();
  5736.                 evt.stopPropagation();
  5737.                 Promise.resolve(dropdown).then((dropdown) => {
  5738.                   dropdown.cancel();
  5739.                 });
  5740.                 // document.body.click();
  5741.               }
  5742.  
  5743.             },
  5744.  
  5745.             mlHandler282: function (evt) {
  5746.               muzTimestamp = 0;
  5747.               nszDropdown = null;
  5748.             },
  5749.  
  5750.             ckHandler282: function (evt) {
  5751.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5752.  
  5753.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5754.               if (Date.now() - muzTimestamp < 40) {
  5755.  
  5756.                 /*
  5757.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5758.                 if(parentButton) return;
  5759.                 */
  5760.  
  5761.                 muzTimestamp = Date.now();
  5762.                 evt.stopImmediatePropagation();
  5763.                 evt.stopPropagation();
  5764.               }
  5765.  
  5766.             },
  5767.  
  5768.             tapHandler282: function (evt) {
  5769.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5770.  
  5771.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5772.               if (Date.now() - muzTimestamp < 40) {
  5773.  
  5774.                 /*
  5775.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5776.                 if(parentButton) return;
  5777.                 */
  5778.  
  5779.                 muzTimestamp = Date.now();
  5780.                 evt.stopImmediatePropagation();
  5781.                 evt.stopPropagation();
  5782.               }
  5783.  
  5784.             },
  5785.  
  5786.  
  5787.             handleEvent(evt) {
  5788.  
  5789.  
  5790.               if (evt) {
  5791.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  5792.                 const cnt = kurMPC.inst || kurMPC;
  5793.                 const hostElement = cnt.hostElement || cnt;
  5794.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  5795.                 switch (evt.type) {
  5796.                   // case 'mousedown':
  5797.                   // return this.mdHandler282.call(kurMPC, evt);
  5798.                   case 'mouseup':
  5799.                     return this.muHandler282(evt);
  5800.                   case 'mouseleave':
  5801.                     return this.mlHandler282(evt);
  5802.                   case 'tap':
  5803.                     return this.tapHandler282(evt);
  5804.                   case 'click':
  5805.                     return this.ckHandler282(evt);
  5806.                 }
  5807.               }
  5808.  
  5809.             }
  5810.  
  5811.  
  5812.  
  5813.           }
  5814.  
  5815.           document.addEventListener('mousedown', function (evt) {
  5816.  
  5817.             if (!evt || !evt.isTrusted || !evt.target) return;
  5818.  
  5819.  
  5820.  
  5821.             muzTimestamp = 0;
  5822.             nszDropdown = null;
  5823.  
  5824.             /*
  5825.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5826.             if(parentButton){
  5827.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  5828.               if(kurMPC){
  5829.                 evt.preventDefault();
  5830.                 evt.stopImmediatePropagation();
  5831.                 evt.stopPropagation();
  5832.               }
  5833.               return;
  5834.             }
  5835.             */
  5836.  
  5837.             /** @type {HTMLElement | null} */
  5838.             const kurMP = kRef(currentMenuPivotWR);
  5839.             if (!kurMP) return;
  5840.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  5841.  
  5842.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  5843.  
  5844.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  5845.  
  5846.             const chatBanner = HTMLElement.prototype.closest.call(kurMPC, 'yt-live-chat-banner-renderer') || 0;
  5847.             if (chatBanner) return;
  5848.  
  5849.  
  5850.             let targetDropDown = null;
  5851.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  5852.               if (dropdown && dropdown.positionTarget === kurMP) {
  5853.                 targetDropDown = dropdown;
  5854.               }
  5855.             }
  5856.  
  5857.             if (!targetDropDown) return;
  5858.  
  5859.  
  5860.             /*
  5861.             if (parentButton) {
  5862.               evt.preventDefault();
  5863.               evt.stopImmediatePropagation();
  5864.               evt.stopPropagation();
  5865.               currentMenuPivotWR = mWeakRef(kurMPC);
  5866.               return;
  5867.             }
  5868.             */
  5869.  
  5870.             if ((nszDropdown = targetDropDown)) {
  5871.               muzTimestamp = Date.now();
  5872.               evt.stopImmediatePropagation();
  5873.               evt.stopPropagation();
  5874.               currentMenuPivotWR = mWeakRef(kurMPC);
  5875.  
  5876.               const listenOpts = { capture: true, passive: false, once: true };
  5877.  
  5878.               // remove unexcecuted eventHandler
  5879.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  5880.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  5881.               document.removeEventListener('tap', handlerObject, listenOpts);
  5882.               document.removeEventListener('click', handlerObject, listenOpts);
  5883.  
  5884.               // inject one time eventHandler to by pass events
  5885.               document.addEventListener('mouseup', handlerObject, listenOpts);
  5886.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  5887.               document.addEventListener('tap', handlerObject, listenOpts);
  5888.               document.addEventListener('click', handlerObject, listenOpts);
  5889.  
  5890.             }
  5891.  
  5892.           }, true);
  5893.  
  5894.         }
  5895.  
  5896.  
  5897.         // yt-live-chat-paid-message-renderer ??
  5898.  
  5899.         /*
  5900.  
  5901.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  5902.  
  5903.  
  5904.         "yt-live-chat-ticker-paid-message-item-renderer"
  5905.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  5906.         "yt-live-chat-paid-message-renderer"
  5907.         "yt-live-chat-text-message-renderer"
  5908.         "yt-live-chat-paid-sticker-renderer"
  5909.  
  5910.         */
  5911.  
  5912.  
  5913.         whenDefinedMultiple([
  5914.  
  5915.           "yt-live-chat-paid-message-renderer",
  5916.           "yt-live-chat-membership-item-renderer",
  5917.           "yt-live-chat-paid-sticker-renderer",
  5918.           "yt-live-chat-text-message-renderer",
  5919.           "yt-live-chat-auto-mod-message-renderer",
  5920.  
  5921.           /*
  5922.           "yt-live-chat-ticker-paid-message-item-renderer",
  5923.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  5924.           "yt-live-chat-paid-message-renderer",
  5925.           "yt-live-chat-text-message-renderer",
  5926.           "yt-live-chat-paid-sticker-renderer",
  5927.  
  5928.           "yt-live-chat-ticker-sponsor-item-renderer",
  5929.           "yt-live-chat-banner-header-renderer",
  5930.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5931.           "ytd-sponsorships-live-chat-header-renderer",
  5932.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  5933.  
  5934.  
  5935.  
  5936.  
  5937.           "yt-live-chat-auto-mod-message-renderer",
  5938.           "yt-live-chat-text-message-renderer",
  5939.           "yt-live-chat-paid-message-renderer",
  5940.  
  5941.           "yt-live-chat-legacy-paid-message-renderer",
  5942.           "yt-live-chat-membership-item-renderer",
  5943.           "yt-live-chat-paid-sticker-renderer",
  5944.           "yt-live-chat-donation-announcement-renderer",
  5945.           "yt-live-chat-moderation-message-renderer",
  5946.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5947.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  5948.           "yt-live-chat-viewer-engagement-message-renderer",
  5949.  
  5950.           */
  5951.  
  5952.  
  5953.         ]).then(sTags => {
  5954.  
  5955.  
  5956.           mightFirstCheckOnYtInit();
  5957.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  5958.           console.log("[Begin]");
  5959.           let doMouseHook = false;
  5960.  
  5961.           const dProto = {
  5962.             isClickableChatRow111: function () {
  5963.               return (
  5964.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  5965.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  5966.               ); // follow .onItemTap(a)
  5967.             }
  5968.           };
  5969.  
  5970.           for (const sTag of sTags) { // ##tag##
  5971.  
  5972.  
  5973.             (() => {
  5974.  
  5975.  
  5976.  
  5977.               const tag = sTag;
  5978.               const dummy = document.createElement(tag);
  5979.  
  5980.               const cProto = getProto(dummy);
  5981.               if (!cProto || !cProto.attached) {
  5982.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  5983.                 return;
  5984.               }
  5985.  
  5986.  
  5987.               const dCnt = dummy || dummy.inst || 0;
  5988.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  5989.  
  5990.  
  5991.  
  5992.  
  5993.  
  5994.  
  5995.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  5996.  
  5997.  
  5998.  
  5999.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  6000.  
  6001.                 if (toHookDocumentMouseDown) {
  6002.                   doMouseHook = true;
  6003.                 }
  6004.  
  6005.  
  6006.  
  6007.                 console.log("shouldSupportWholeItemClick Y", tag);
  6008.  
  6009.  
  6010.               } else {
  6011.  
  6012.                 console.log("shouldSupportWholeItemClick N", tag);
  6013.               }
  6014.  
  6015.  
  6016.  
  6017.             })();
  6018.  
  6019.           }
  6020.  
  6021.  
  6022.           if (doMouseHook) {
  6023.  
  6024.             hookDocumentMouseDownSetupFn();
  6025.  
  6026.  
  6027.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  6028.           }
  6029.  
  6030.           console.log("[End]");
  6031.  
  6032.           console.groupEnd();
  6033.  
  6034.  
  6035.         }).catch(console.warn);
  6036.  
  6037.  
  6038.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  6039.  
  6040.  
  6041.       }
  6042.  
  6043.  
  6044.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  6045.  
  6046.         let rr = null;
  6047.         const p1 = new Promise(resolve => {
  6048.           rr = resolve;
  6049.         });
  6050.  
  6051.         const p1unlock = () => {
  6052.           const f = rr;
  6053.           if (f) {
  6054.             rr = null;
  6055.             f();
  6056.           }
  6057.         }
  6058.  
  6059.         return {
  6060.           p1,
  6061.           p1unlock,
  6062.           assignLock: (targetCnt, timeout) => {
  6063.             targetCnt.__showContextMenu_assign_lock__(p1);
  6064.             if (timeout) setTimeout(p1unlock, timeout);
  6065.           }
  6066.         }
  6067.  
  6068.       }
  6069.  
  6070.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  6071.  
  6072.         document.addEventListener('mousedown', function (evt) {
  6073.  
  6074.           const maxloopDOMTreeElements = 4;
  6075.           const maxloopYtCompontents = 4;
  6076.           let j1 = 0;
  6077.           let j2 = 0;
  6078.           let target = (evt || 0).target || 0;
  6079.           if (!target) return;
  6080.  
  6081.  
  6082.           while (target instanceof HTMLElement) {
  6083.             if (++j1 > maxloopDOMTreeElements) break;
  6084.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') break;
  6085.             target = nodeParent(target);
  6086.           }
  6087.           const components = [];
  6088.           while (target instanceof HTMLElement) {
  6089.             if (++j2 > maxloopYtCompontents) break;
  6090.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') {
  6091.               components.push(target);
  6092.             }
  6093.             if (typeof (target.inst || target).showContextMenu === 'function') break;
  6094.             target = target.parentComponent || (target.inst || 0).parentComponent || null;
  6095.           }
  6096.           if (!(target instanceof HTMLElement)) return;
  6097.           const targetCnt = target.inst || target;
  6098.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  6099.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  6100.             return;
  6101.           }
  6102.  
  6103.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  6104.           if (!endpoint) return;
  6105.           if (targetCnt.opened || !targetCnt.isAttached) return;
  6106.  
  6107.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  6108.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  6109.           }
  6110.  
  6111.           let doPreRequest = false;
  6112.           if (components.length >= 2 && components[0].id === 'menu-button' && (target.$ || 0)['menu-button'] === components[0]) {
  6113.             doPreRequest = true;
  6114.           } else if (components.length === 1 && components[0] === target) {
  6115.             doPreRequest = true;
  6116.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (target.$ || 0)['author-photo'] === components[0]) {
  6117.             doPreRequest = true;
  6118.           }
  6119.           if (doPreRequest === false) {
  6120.             console.log('doPreRequest = fasle on showContextMenu', components);
  6121.             return;
  6122.           }
  6123.  
  6124.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  6125.  
  6126.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  6127.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  6128.             return;
  6129.           }
  6130.  
  6131.  
  6132.           const onSuccess = (a) => {
  6133.             /*
  6134.  
  6135.               dQ() && (a = a.response);
  6136.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6137.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  6138.  
  6139.             */
  6140.  
  6141.             a = a.response || a;
  6142.  
  6143.             if (!a) {
  6144.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  6145.               return;
  6146.             }
  6147.  
  6148.             let z = null;
  6149.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6150.  
  6151.             if (z) {
  6152.               a = z;
  6153.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  6154.             }
  6155.  
  6156.           };
  6157.           const onFailure = (a) => {
  6158.  
  6159.             /*
  6160.  
  6161.               if (a instanceof Error || a instanceof Object || a instanceof String)
  6162.                   var b = a;
  6163.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  6164.  
  6165.             */
  6166.  
  6167.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  6168.             // console.log('onFailure', a)
  6169.  
  6170.           };
  6171.  
  6172.           if (doPreRequest) {
  6173.  
  6174.             let propertyCounter = 0;
  6175.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  6176.             const p1Timeout = 800;
  6177.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  6178.  
  6179.             try {
  6180.  
  6181.               const onSuccessHelperFn = function () {
  6182.                 pm1.p1unlock();
  6183.                 if (propertyCounter !== 5) {
  6184.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  6185.                   return;
  6186.                 }
  6187.                 if (this[proxyKey] !== targetCnt) {
  6188.                   console.log('Error in prerequest for showContextMenu.this');
  6189.                   return;
  6190.                 }
  6191.                 onSuccess(...arguments);
  6192.               };
  6193.               const onFailureHelperFn = function () {
  6194.                 pm1.p1unlock();
  6195.                 if (propertyCounter !== 5) {
  6196.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  6197.                   return;
  6198.                 }
  6199.                 if (this[proxyKey] !== targetCnt) {
  6200.                   console.log('Error in prerequest for showContextMenu.this');
  6201.                   return;
  6202.                 }
  6203.                 onFailure(...arguments);
  6204.  
  6205.               }
  6206.               const fakeTargetCnt = new Proxy({
  6207.                 __showContextMenu_forceNativeRequest__: 1,
  6208.                 __showContextMenu_sync_mode_request__: 1,
  6209.                 get handleGetContextMenuResponse_() {
  6210.                   propertyCounter += 2;
  6211.                   return onSuccessHelperFn;
  6212.                 },
  6213.                 get handleGetContextMenuError() {
  6214.                   propertyCounter += 3;
  6215.                   return onFailureHelperFn;
  6216.                 }
  6217.               }, {
  6218.                 get(_, key, receiver) {
  6219.                   if (key in _) return _[key];
  6220.                   if (key === proxyKey) return targetCnt;
  6221.  
  6222.                   let giveNative = false;
  6223.                   if (key in targetCnt) {
  6224.                     if (key === 'data') giveNative = true;
  6225.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  6226.                   }
  6227.                   if (giveNative) return targetCnt[key];
  6228.                 }
  6229.               });
  6230.  
  6231.               const fakeEvent = (() => {
  6232.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  6233.                 const nf = function () { }
  6234.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  6235.  
  6236.                 return {
  6237.                   type: 'tap',
  6238.                   eventPhase: 0,
  6239.                   isTrusted: false,
  6240.                   __composed: true,
  6241.                   bubbles, cancelable, cancelBubble, timeStamp,
  6242.                   target, srcElement, defaultPrevented, currentTarget, composed,
  6243.                   stopPropagation, stopImmediatePropagation, preventDefault
  6244.                 };
  6245.               })(evt);
  6246.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  6247.  
  6248.  
  6249.             } catch (e) {
  6250.               console.warn(e);
  6251.               propertyCounter = 7;
  6252.  
  6253.             }
  6254.             if (propertyCounter !== 5) {
  6255.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  6256.               return;
  6257.             }
  6258.  
  6259.             pm1.assignLock(targetCnt, p1Timeout);
  6260.  
  6261.           }
  6262.  
  6263.  
  6264.  
  6265.  
  6266.  
  6267.  
  6268.         }, true);
  6269.  
  6270.  
  6271.       }
  6272.  
  6273.  
  6274.  
  6275.       /*
  6276.  
  6277.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  6278.  
  6279.       */
  6280.  
  6281.       whenDefinedMultiple([
  6282.         "yt-live-chat-ticker-sponsor-item-renderer",
  6283.         "yt-live-chat-banner-header-renderer",
  6284.         "yt-live-chat-text-message-renderer",
  6285.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6286.         "ytd-sponsorships-live-chat-header-renderer",
  6287.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6288.  
  6289.         "yt-live-chat-paid-sticker-renderer",
  6290.         "yt-live-chat-viewer-engagement-message-renderer",
  6291.         "yt-live-chat-paid-message-renderer"
  6292.  
  6293.  
  6294.  
  6295.  
  6296.       ]).then(sTags => {
  6297.  
  6298.         mightFirstCheckOnYtInit();
  6299.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  6300.         console.log("[Begin]");
  6301.  
  6302.  
  6303.         const __showContextMenu_mutex__ = new Mutex();
  6304.         let __showContextMenu_mutex_unlock__ = null;
  6305.         let lastShowMenuTarget = null;
  6306.  
  6307.  
  6308.  
  6309.  
  6310.         const wm37 = new WeakMap();
  6311.  
  6312.         const dProto = {
  6313.  
  6314.  
  6315.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  6316.  
  6317.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  6318.             if (a) {
  6319.               if (doDeepCopy) a = deepCopy(a);
  6320.               wm37.set(endpoint, a);
  6321.             } else {
  6322.               wm37.remove(endpoint);
  6323.             }
  6324.           },
  6325.           __getCachedEndpointData__: function (endpoint) {
  6326.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  6327.             if (endpoint) return wm37.get(endpoint);
  6328.             return null;
  6329.           },
  6330.           /** @type {(resolvedEndpoint: any) => void 0} */
  6331.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  6332.  
  6333.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  6334.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  6335.             Promise.resolve(resolvedEndpoint).then(() => {
  6336.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  6337.               this.showContextMenu_(resolvedEndpoint);
  6338.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  6339.             });
  6340.  
  6341.  
  6342.           },
  6343.  
  6344.  
  6345.  
  6346.           showContextMenuForCacheReopen: function (a) {
  6347.             if (!this.__showContextMenu_forceNativeRequest__) {
  6348.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6349.               if (endpoint) {
  6350.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  6351.                 if (resolvedEndpoint) {
  6352.                   this.__showCachedContextMenu__(resolvedEndpoint);
  6353.                   a && a.stopPropagation()
  6354.                   return;
  6355.                 }
  6356.               }
  6357.             }
  6358.             return this.showContextMenu37(a);
  6359.           },
  6360.  
  6361.           showContextMenuForCacheReopen_: function (a) {
  6362.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  6363.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6364.               if (endpoint) {
  6365.                 const f = this.__cacheResolvedEndpointData__;
  6366.                 if (typeof f === 'function') f(endpoint, a, true);
  6367.               }
  6368.             }
  6369.             return this.showContextMenu37_(a);
  6370.           },
  6371.  
  6372.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  6373.  
  6374.           showContextMenuWithDisableScroll: function (a) {
  6375.  
  6376.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6377.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  6378.  
  6379.               const parentComponent = this.parentComponent;
  6380.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  6381.                 parentComponent.allowScroll = false;
  6382.               }
  6383.             }
  6384.  
  6385.             return this.showContextMenu48.apply(this, arguments);
  6386.  
  6387.           },
  6388.  
  6389.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  6390.  
  6391.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  6392.             return __showContextMenu_mutex_unlock__ === null;
  6393.           },
  6394.  
  6395.           __showContextMenu_assign_lock__: function (p) {
  6396.  
  6397.             const mutex = __showContextMenu_mutex__;
  6398.  
  6399.             mutex.lockWith(unlock => {
  6400.               p.then(unlock);
  6401.             });
  6402.  
  6403.           },
  6404.  
  6405.           showContextMenuWithMutex: function (a) {
  6406.             lastShowMenuTarget = this;
  6407.  
  6408.             if (this.__showContextMenu_sync_mode_request__) {
  6409.  
  6410.               return this.showContextMenu47(a);
  6411.             } else {
  6412.  
  6413.               const mutex = __showContextMenu_mutex__;
  6414.  
  6415.               mutex.lockWith(unlock => {
  6416.                 if (lastShowMenuTarget !== this) {
  6417.                   unlock();
  6418.                   return;
  6419.                 }
  6420.  
  6421.                 setTimeout(unlock, 800); // in case network failure
  6422.                 __showContextMenu_mutex_unlock__ = unlock;
  6423.                 try {
  6424.                   this.showContextMenu47(a);
  6425.                 } catch (e) {
  6426.                   console.warn(e);
  6427.                   unlock(); // in case function script error
  6428.                 }
  6429.  
  6430.               });
  6431.  
  6432.             }
  6433.  
  6434.  
  6435.           },
  6436.  
  6437.           showContextMenuWithMutex_: function (a) {
  6438.  
  6439.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  6440.               __showContextMenu_mutex_unlock__();
  6441.               __showContextMenu_mutex_unlock__ = null;
  6442.             }
  6443.             return this.showContextMenu47_(a);
  6444.  
  6445.           }
  6446.  
  6447.         }
  6448.  
  6449.         for (const tag of sTags) { // ##tag##
  6450.  
  6451.  
  6452.  
  6453.           (() => {
  6454.  
  6455.             const dummy = document.createElement(tag);
  6456.  
  6457.             const cProto = getProto(dummy);
  6458.             if (!cProto || !cProto.attached) {
  6459.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6460.               return;
  6461.             }
  6462.  
  6463.  
  6464.  
  6465.  
  6466.             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) {
  6467.  
  6468.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  6469.               cProto.showContextMenu37 = cProto.showContextMenu;
  6470.  
  6471.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  6472.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  6473.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  6474.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  6475.  
  6476.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  6477.  
  6478.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  6479.  
  6480.  
  6481.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  6482.  
  6483.  
  6484.  
  6485.             } else {
  6486.  
  6487.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  6488.  
  6489.             }
  6490.  
  6491.  
  6492.  
  6493.             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) {
  6494.  
  6495.  
  6496.               cProto.showContextMenu48 = cProto.showContextMenu;
  6497.  
  6498.  
  6499.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  6500.  
  6501.  
  6502.  
  6503.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6504.  
  6505.  
  6506.  
  6507.             } else {
  6508.  
  6509.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  6510.  
  6511.             }
  6512.  
  6513.  
  6514.  
  6515.  
  6516.  
  6517.             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) {
  6518.  
  6519.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  6520.               cProto.showContextMenu47 = cProto.showContextMenu;
  6521.  
  6522.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  6523.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  6524.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  6525.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  6526.  
  6527.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6528.  
  6529.  
  6530.  
  6531.             } else {
  6532.  
  6533.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  6534.  
  6535.             }
  6536.  
  6537.  
  6538.  
  6539.  
  6540.           })();
  6541.  
  6542.         }
  6543.  
  6544.  
  6545.  
  6546.         console.log("[End]");
  6547.  
  6548.         console.groupEnd();
  6549.  
  6550.       }).catch(console.warn);
  6551.  
  6552.  
  6553.  
  6554.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  6555.  
  6556.         mightFirstCheckOnYtInit();
  6557.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  6558.         console.log("[Begin]");
  6559.         (() => {
  6560.  
  6561.           const tag = "tp-yt-iron-dropdown";
  6562.           const dummy = document.createElement(tag);
  6563.  
  6564.           const cProto = getProto(dummy);
  6565.           if (!cProto || !cProto.attached) {
  6566.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6567.             return;
  6568.           }
  6569.  
  6570.  
  6571.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  6572.             cProto.__deraf_hn__ = function (sId, fn) {
  6573.               const rhKey = `_rafHandler_${sId}`;
  6574.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  6575.               if (m.has(fn)) return m.get(fn);
  6576.               const resFn = () => {
  6577.                 this.__rafs[sId] = null;
  6578.                 fn.call(this)
  6579.               };
  6580.               m.set(fn, resFn);
  6581.               m.set(resFn, resFn);
  6582.               return resFn;
  6583.             };
  6584.             cProto.__deraf34 = cProto.__deraf;
  6585.             cProto.__deraf = function (a, b) { // sId, fn
  6586.               let c = this.__rafs;
  6587.               null !== c[a] && cancelAnimationFrame(c[a]);
  6588.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  6589.             };
  6590.             console.log("USE_VANILLA_DEREF - OK");
  6591.           } else {
  6592.             console.log("USE_VANILLA_DEREF - NG");
  6593.           }
  6594.  
  6595.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  6596.             cProto.__deraf66 = cProto.__deraf;
  6597.             cProto.__deraf = function (sId, fn) {
  6598.               if (this.__byPassRAF__) {
  6599.                 Promise.resolve().then(() => {
  6600.                   fn.call(this);
  6601.                 });
  6602.               }
  6603.               let r = this.__deraf66.apply(this, arguments);
  6604.               return r;
  6605.             }
  6606.             console.log("FIX_DROPDOWN_DERAF - OK");
  6607.           } else {
  6608.             console.log("FIX_DROPDOWN_DERAF - NG");
  6609.           }
  6610.  
  6611.  
  6612.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  6613.  
  6614.             let lastClose = null;
  6615.             let lastOpen = null;
  6616.             let cid = 0;
  6617.  
  6618.             cProto.__mtChanged__ = function (b) {
  6619.  
  6620.               Promise.resolve().then(() => {
  6621.                 this._applyFocus();
  6622.               }).then(() => {
  6623.                 b ? this._renderOpened() : this._renderClosed();
  6624.               }).catch(console.warn);
  6625.  
  6626.             };
  6627.  
  6628.             const __moChanged__ = () => {
  6629.               if (!cid) return;
  6630.               // console.log(553, !!lastOpen, !!lastClose);
  6631.               cid = 0;
  6632.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  6633.                 lastOpen.__mtChanged__(1)
  6634.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  6635.                 lastClose.__mtChanged__(0);
  6636.               }
  6637.               lastOpen = null;
  6638.               lastClose = null;
  6639.             };
  6640.  
  6641.  
  6642.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  6643.               cProto._openedChanged66 = cProto._openedChanged;
  6644.               cProto._openedChanged = function () {
  6645.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  6646.                 this.__byPassRAF__ = true;
  6647.                 let r = this._openedChanged66.apply(this, arguments);
  6648.                 this.__byPassRAF__ = false;
  6649.                 return r;
  6650.               }
  6651.             }
  6652.  
  6653.             const pSetGet = (key, pdThis, pdBase) => {
  6654.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  6655.               return {
  6656.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  6657.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  6658.               };
  6659.             };
  6660.  
  6661.             cProto.__modifiedMenuPropsFn__ = function () {
  6662.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  6663.               const pdBase = Object.getOwnPropertyDescriptors(this)
  6664.  
  6665.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  6666.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  6667.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  6668.  
  6669.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  6670.                 console.warn('there is setter/getter for autoFitOnAttach');
  6671.                 return;
  6672.               }
  6673.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  6674.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  6675.                 return;
  6676.               }
  6677.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  6678.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  6679.                 return;
  6680.               }
  6681.  
  6682.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  6683.  
  6684.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  6685.  
  6686.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  6687.  
  6688.               Object.defineProperties(this, {
  6689.                 autoFitOnAttach: {
  6690.                   get() {
  6691.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6692.                     return autoFitOnAttach;
  6693.                   },
  6694.                   set(nv) {
  6695.                     autoFitOnAttach = nv;
  6696.                     return true;
  6697.                   },
  6698.                   enumerable: true,
  6699.                   configurable: true
  6700.                 }, expandSizingTargetForScrollbars: {
  6701.                   get() {
  6702.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6703.                     return expandSizingTargetForScrollbars;
  6704.                   },
  6705.                   set(nv) {
  6706.                     expandSizingTargetForScrollbars = nv;
  6707.                     return true;
  6708.                   },
  6709.                   enumerable: true,
  6710.                   configurable: true
  6711.                 }, allowOutsideScroll: {
  6712.                   get() {
  6713.                     if (this._modifiedMenuPropOn062__) return true;
  6714.                     return allowOutsideScroll;
  6715.                   },
  6716.                   set(nv) {
  6717.                     allowOutsideScroll = nv;
  6718.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  6719.                     return true;
  6720.                   },
  6721.                   enumerable: true,
  6722.                   configurable: true
  6723.                 }
  6724.               })
  6725.             };
  6726.  
  6727.             /*
  6728.                // ***** position() to be changed. *****
  6729.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  6730.  
  6731.                   overflow: visible !important;
  6732.                   min-width: max-content !important;
  6733.                   max-width: max-content !important;
  6734.                   max-height: max-content !important;
  6735.                   min-height: max-content !important;
  6736.                   white-space: nowrap;
  6737.               }
  6738.  
  6739.             */
  6740.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  6741.  
  6742.               let m34 = 0;
  6743.               cProto.__refitByPosition__ = function () {
  6744.                 m34++;
  6745.                 if (m34 <= 0) m34 = 0;
  6746.                 if (m34 !== 1) return;
  6747.                 const hostElement = this.hostElement || this;
  6748.                 if (document.visibilityState === 'visible') {
  6749.                   const sizingTarget = this.sizingTarget;
  6750.                   if (!sizingTarget) {
  6751.                     m34 = 0;
  6752.                     return;
  6753.                   }
  6754.  
  6755.                   /*
  6756.                   let useVisibilityCollapse = true;
  6757.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  6758.                     useVisibilityCollapse = false;
  6759.                   }
  6760.  
  6761.                   if (useVisibilityCollapse) {
  6762.                     hostElement.style.visibility = 'collapse';
  6763.                     sizingTarget.style.visibility = 'collapse';
  6764.                   } else {
  6765.                     hostElement.setAttribute('rNgzQ', '');
  6766.                     sizingTarget.setAttribute('rNgzQ', '');
  6767.                   }
  6768.                   */
  6769.                   hostElement.setAttribute('rNgzQ', '');
  6770.                   sizingTarget.setAttribute('rNgzQ', '');
  6771.  
  6772.                   const gn = () => {
  6773.                     /*
  6774.                     if (useVisibilityCollapse) {
  6775.                       hostElement.style.visibility = '';
  6776.                       sizingTarget.style.visibility = '';
  6777.                     } else {
  6778.                       hostElement.removeAttribute('rNgzQ');
  6779.                       sizingTarget.removeAttribute('rNgzQ');
  6780.                     }
  6781.                     */
  6782.                     hostElement.removeAttribute('rNgzQ');
  6783.                     sizingTarget.removeAttribute('rNgzQ');
  6784.                   }
  6785.  
  6786.                   const an = async () => {
  6787.                     while (m34 >= 1) {
  6788.                       await renderReadyPn(sizingTarget);
  6789.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  6790.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  6791.                       }
  6792.                       m34--;
  6793.                     }
  6794.                     m34 = 0;
  6795.                     Promise.resolve().then(gn);
  6796.                   }
  6797.                   setTimeout(an, 4); // wait those resizing function calls
  6798.  
  6799.  
  6800.                 } else {
  6801.                   m34 = 0;
  6802.                 }
  6803.               }
  6804.               cProto.position34 = cProto.position
  6805.               cProto.position = function () {
  6806.                 if (this._positionInitialize_) {
  6807.                   this._positionInitialize_ = 0;
  6808.                   this.__refitByPosition__();
  6809.                 }
  6810.                 let r = cProto.position34.apply(this, arguments);
  6811.                 return r;
  6812.               }
  6813.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  6814.  
  6815.             } else {
  6816.  
  6817.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  6818.  
  6819.             }
  6820.  
  6821.  
  6822.  
  6823.             cProto.__openedChanged = function () {
  6824.               this._positionInitialize_ = 1;
  6825.               // this.removeAttribute('horizontal-align')
  6826.               // this.removeAttribute('vertical-align')
  6827.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  6828.                 this.__menuTypeCheck__ = true;
  6829.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  6830.                   this._modifiedMenuPropOn062__ = false;
  6831.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6832.                   // this.autoFitOnAttach = true;
  6833.                   // this.expandSizingTargetForScrollbars = true;
  6834.                   // this.allowOutsideScroll = true;
  6835.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  6836.                   this.__modifiedMenuPropsFn__();
  6837.                   // this.constrain= function(){}
  6838.                   // this.position= function(){}
  6839.  
  6840.                   // this.autoFitOnAttach = true;
  6841.                   // this.expandSizingTargetForScrollbars = true;
  6842.                   // this.allowOutsideScroll = true;
  6843.                 }
  6844.               }
  6845.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  6846.                 let newValue = null;
  6847.                 const positionTarget = this.positionTarget;
  6848.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  6849.                   if (this._modifiedMenuPropOn062__ === false) {
  6850.                     newValue = true;
  6851.                   }
  6852.                 } else if (this._modifiedMenuPropOn062__ === true) {
  6853.                   newValue = false;
  6854.                 }
  6855.                 if (newValue !== null) {
  6856.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  6857.                   this._modifiedMenuPropOn062__ = newValue;
  6858.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  6859.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  6860.                 }
  6861.               }
  6862.  
  6863.               if (this.opened) {
  6864.  
  6865.                 Promise.resolve().then(() => {
  6866.  
  6867.                   this._prepareRenderOpened();
  6868.                 }).then(() => {
  6869.                   this._manager.addOverlay(this);
  6870.                   if (this._manager._overlays.length === 1) {
  6871.                     lastOpen = this;
  6872.                     lastClose = null;
  6873.                   } else {
  6874.                     return 1;
  6875.                   }
  6876.                   // if (cid) {
  6877.                   //   clearTimeout(cid);
  6878.                   //   cid = -1;
  6879.                   //   this.__moChanged__();
  6880.                   //   cid = 0;
  6881.                   // } else {
  6882.                   //   cid = -1;
  6883.                   //   this.__moChanged__();
  6884.                   //   cid = 0;
  6885.                   // }
  6886.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6887.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6888.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6889.                   cid = cid || requestAnimationFrame(__moChanged__);
  6890.                 }).then((r) => {
  6891.  
  6892.                   if (r) this.__mtChanged__(1);
  6893.                 }).catch(console.warn);
  6894.  
  6895.               } else {
  6896.                 Promise.resolve().then(() => {
  6897.                   this._manager.removeOverlay(this);
  6898.                   if (this._manager._overlays.length === 0) {
  6899.                     lastClose = this;
  6900.                     lastOpen = null;
  6901.                   } else {
  6902.                     return 1;
  6903.                   }
  6904.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6905.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6906.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6907.                   cid = cid || requestAnimationFrame(__moChanged__);
  6908.                 }).then((r) => {
  6909.                   if (r) this.__mtChanged__(0);
  6910.                 }).catch(console.warn);
  6911.  
  6912.               }
  6913.  
  6914.             }
  6915.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  6916.  
  6917.           } else {
  6918.  
  6919.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  6920.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  6921.  
  6922.           }
  6923.  
  6924.  
  6925.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  6926.  
  6927.             cProto.__openedChanged82 = cProto.__openedChanged;
  6928.  
  6929.  
  6930.             cProto.__openedChanged = function () {
  6931.  
  6932.               // currentMenuPivotWR = null;
  6933.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  6934.  
  6935.  
  6936.  
  6937.               // if (this.opened && this.positionTarget) {
  6938.  
  6939.               //   const positionTarget = this.positionTarget;
  6940.               //   console.log(1480, '__openedChanged.B', positionTarget)
  6941.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  6942.  
  6943.               // }
  6944.  
  6945.               const positionTarget = this.positionTarget;
  6946.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  6947.               return this.__openedChanged82.apply(this, arguments);
  6948.             }
  6949.           }
  6950.  
  6951.  
  6952.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  6953.  
  6954.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  6955.  
  6956.           //   cProto.__onCaptureScroll = function(a){
  6957.  
  6958.           //     const q = true;
  6959.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  6960.  
  6961.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  6962.           //       async function af() {
  6963.           //         this.__isAnimating && this._finishRenderOpened();
  6964.           //         if (!this.opened) return;
  6965.           //         this.__restoreScrollPosition();
  6966.           //         await new Promise(r => requestAnimationFrame(r));
  6967.           //         if (!this.opened) return;
  6968.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6969.           //         if (!this.opened) return;
  6970.           //         this.__restoreScrollPosition();
  6971.           //         await new Promise(r => requestAnimationFrame(r));
  6972.           //         if (!this.opened) return;
  6973.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6974.           //         if (!this.opened) return;
  6975.           //         this.opened && !this.__isAnimating && this.refit();
  6976.           //       }
  6977.           //       Promise.resolve().then(af);
  6978.  
  6979.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  6980.           //     }else{
  6981.  
  6982.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  6983.  
  6984.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  6985.           //     }
  6986.           //   }
  6987.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  6988.           // }else{
  6989.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  6990.  
  6991.           // }
  6992.  
  6993.  
  6994.         })();
  6995.  
  6996.         console.log("[End]");
  6997.  
  6998.         console.groupEnd();
  6999.  
  7000.       }).catch(console.warn);
  7001.  
  7002.  
  7003.  
  7004.  
  7005.  
  7006.  
  7007.  
  7008.  
  7009.       /*
  7010.  
  7011.  
  7012.  
  7013.  
  7014.  
  7015.           var FU = function() {
  7016.               var a = this;
  7017.               this.nextHandle_ = 1;
  7018.               this.clients_ = {};
  7019.               this.JSC$10323_callbacks_ = {};
  7020.               this.unsubscribeAsyncHandles_ = {};
  7021.               this.subscribe = vl(function(b, c, d) {
  7022.                   var e = Geb(b);
  7023.                   if (e in a.clients_)
  7024.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  7025.                   else {
  7026.                       a: {
  7027.                           var h = Geb(b), l;
  7028.                           for (l in a.unsubscribeAsyncHandles_) {
  7029.                               var m = a.clients_[l];
  7030.                               if (m instanceof KO) {
  7031.                                   delete a.clients_[l];
  7032.                                   delete a.JSC$10323_callbacks_[l];
  7033.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  7034.                                   delete a.unsubscribeAsyncHandles_[l];
  7035.                                   i6a(m);
  7036.                                   m.objectId_ = new FQa(h);
  7037.                                   m.register();
  7038.                                   d = m;
  7039.                                   break a
  7040.                               }
  7041.                           }
  7042.                           d.objectSource = b.invalidationId.objectSource;
  7043.                           d.objectId = h;
  7044.                           if (b = b.webAuthConfigurationData)
  7045.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  7046.                               b.pageId && (d.pageId = b.pageId);
  7047.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  7048.                           d.register()
  7049.                       }
  7050.                       a.clients_[e] = d;
  7051.                       a.JSC$10323_callbacks_[e] = {}
  7052.                   }
  7053.                   d = a.nextHandle_++;
  7054.                   a.JSC$10323_callbacks_[e][d] = c;
  7055.                   return d
  7056.               })
  7057.           };
  7058.           FU.prototype.unsubscribe = function(a, b) {
  7059.               var c = Geb(a);
  7060.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  7061.               !this.JSC$10323_callbacks_[c].length)) {
  7062.                   var d = this.clients_[c];
  7063.                   b = Jq.run(function() {
  7064.                       ei(d);
  7065.                       delete this.clients_[c];
  7066.                       delete this.unsubscribeAsyncHandles_[c]
  7067.                   }
  7068.                   .bind(this));
  7069.                   this.unsubscribeAsyncHandles_[c] = b
  7070.               }
  7071.           }
  7072.           ;
  7073.  
  7074.  
  7075.       */
  7076.  
  7077.  
  7078.  
  7079.  
  7080.       const onManagerFound = (dummyManager) => {
  7081.         if (!dummyManager || typeof dummyManager !== 'object') return;
  7082.  
  7083.         const mgrProto = dummyManager.constructor.prototype;
  7084.  
  7085.         let keyCallbackStore = '';
  7086.         for (const [key, v] of Object.entries(dummyManager)) {
  7087.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  7088.         }
  7089.  
  7090.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  7091.  
  7092.         if (mgrProto.unsubscribe16) return;
  7093.  
  7094.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  7095.  
  7096.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  7097.         console.log("[Begin]");
  7098.  
  7099.  
  7100.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  7101.         const isEmptyObject = (obj) => {
  7102.           for (let key in obj) {
  7103.             if (obj.hasOwnProperty(key)) return false;
  7104.           }
  7105.           return true;
  7106.         }
  7107.  
  7108.         const idMapper = new Map();
  7109.  
  7110.         const convertId = function (objectId) {
  7111.           if (!objectId || typeof objectId !== 'string') return null;
  7112.  
  7113.           let result = idMapper.get(objectId)
  7114.           if (result) return result;
  7115.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  7116.           idMapper.set(objectId, result)
  7117.           return result;
  7118.         }
  7119.  
  7120.  
  7121.         const rafHandleHolder = [];
  7122.  
  7123.         let pzw = 0;
  7124.         let lza = 0;
  7125.         const rafHandlerFn = () => {
  7126.           pzw = 0;
  7127.           if (rafHandleHolder.length === 1) {
  7128.             const f = rafHandleHolder[0];
  7129.             rafHandleHolder.length = 0;
  7130.             f();
  7131.           } else if (rafHandleHolder.length > 1) {
  7132.             const arr = rafHandleHolder.slice(0);
  7133.             rafHandleHolder.length = 0;
  7134.             for (const fn of arr) fn();
  7135.           }
  7136.         };
  7137.  
  7138.  
  7139.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  7140.  
  7141.           const checkIntegrityForSubscribe = (mgr) => {
  7142.             if (mgr
  7143.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  7144.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  7145.  
  7146.               const ns = new Set(Object.keys(mgr));
  7147.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  7148.  
  7149.               if (ns.size >= 6 && ms.size >= 4) {
  7150.                 // including 'subscribe18'
  7151.                 // 'unsubscribe16', 'subscribe19'
  7152.  
  7153.                 let r = 0;
  7154.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  7155.                   r += ns.has(k) ? 1 : 0;
  7156.                 }
  7157.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  7158.                   r += ms.has(k) ? 1 : 0;
  7159.                 }
  7160.                 if (r === 10) {
  7161.                   const isObject = (c) => (c || 0).constructor === Object;
  7162.  
  7163.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  7164.  
  7165.                     return true;
  7166.                   }
  7167.  
  7168.  
  7169.                 }
  7170.  
  7171.               }
  7172.  
  7173.  
  7174.             }
  7175.             return false;
  7176.           }
  7177.  
  7178.           mgrProto.subscribe19 = function (o, f, opts) {
  7179.  
  7180.             const ct_clients_ = this.clients_ || 0;
  7181.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  7182.  
  7183.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  7184.  
  7185.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7186.             if (!objectId) return this.subscribe18.apply(this, arguments);
  7187.             objectId = convertId(objectId);
  7188.  
  7189.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  7190.  
  7191.             if (ct_clients_[objectId]) {
  7192.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  7193.             }
  7194.  
  7195.             return this.subscribe18.apply(this, arguments);
  7196.           }
  7197.  
  7198.           mgrProto.unsubscribe = function (o, d) {
  7199.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  7200.               this.subscribe18 = this.subscribe;
  7201.               this.subscribe = this.subscribe19;
  7202.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  7203.             }
  7204.             const ct_clients_ = this.clients_;
  7205.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  7206.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  7207.  
  7208.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7209.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  7210.  
  7211.             objectId = convertId(objectId);
  7212.  
  7213.  
  7214.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  7215.  
  7216.             const callbacks = this[keyCallbackStore] || 0;
  7217.             const callbackObj = callbacks[objectId] || 0;
  7218.  
  7219.  
  7220.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  7221.               const w = ct_clients_[objectId];
  7222.               --lza;
  7223.               if (lza < -1e9) lza = -1;
  7224.               const qta = lza;
  7225.               rafHandleHolder.push(() => {
  7226.                 if (qta === ct_handles_[objectId]) {
  7227.                   const o = {
  7228.                     callbacks, callbackObj,
  7229.                     client: ct_clients_[objectId],
  7230.                     handle: ct_handles_[objectId]
  7231.                   };
  7232.                   let p = 0;
  7233.                   try {
  7234.                     if (ct_clients_[objectId] === w) {
  7235.                       w && "function" === typeof w.dispose && w.dispose();
  7236.                       delete ct_clients_[objectId];
  7237.                       delete ct_handles_[objectId];
  7238.                       p = 1;
  7239.                     } else {
  7240.                       // w && "function" === typeof w.dispose && w.dispose();
  7241.                       // delete ct_clients_[objectId];
  7242.                       // delete ct_handles_[objectId];
  7243.                       p = 2;
  7244.                     }
  7245.                   } catch (e) {
  7246.                     console.warn(e);
  7247.                   }
  7248.                   console.log(`unsubscribed: ${p}`, this, o);
  7249.                 }
  7250.               });
  7251.               ct_handles_[objectId] = qta;
  7252.               if (pzw === 0) {
  7253.                 pzw = requestAnimationFrame(rafHandlerFn);
  7254.               }
  7255.             }
  7256.           }
  7257.  
  7258.  
  7259.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  7260.  
  7261.         } else {
  7262.  
  7263.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  7264.         }
  7265.  
  7266.         console.log("[End]");
  7267.  
  7268.         console.groupEnd();
  7269.  
  7270.       }
  7271.  
  7272.  
  7273.  
  7274.       /*
  7275.  
  7276.  
  7277.               a.prototype.async = function(e, h) {
  7278.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  7279.               }
  7280.               ;
  7281.               a.prototype.cancelAsync = function(e) {
  7282.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  7283.               }
  7284.  
  7285.       */
  7286.  
  7287.  
  7288.  
  7289.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  7290.  
  7291.         let __dummyManager__ = null;
  7292.  
  7293.         mightFirstCheckOnYtInit();
  7294.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  7295.         console.log("[Begin]");
  7296.         (() => {
  7297.  
  7298.           const tag = "yt-invalidation-continuation"
  7299.           const dummy = document.createElement(tag);
  7300.  
  7301.           const cProto = getProto(dummy);
  7302.           if (!cProto || !cProto.attached) {
  7303.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7304.             return;
  7305.           }
  7306.  
  7307.           const dummyManager = (dummy.inst || dummy).manager_ || 0;
  7308.           __dummyManager__ = dummyManager;
  7309.  
  7310.           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) {
  7311.  
  7312.  
  7313.             const rafHub = new RAFHub();
  7314.  
  7315.             rafHub.keepRAF = true;
  7316.             cProto.async71 = cProto.async;
  7317.             cProto.cancelAsync71 = cProto.cancelAsync;
  7318.  
  7319.             // mostly for subscription timeoutMs 10000ms
  7320.             let mcw = 1; // 1, 3, 5, ...
  7321.             let arr = new Map();
  7322.  
  7323.             let __asyncInited__ = 0;
  7324.             let __timeoutStartId__ = null;
  7325.             const __asyncInit__ = () => {
  7326.  
  7327.               if (__asyncInited__) return;
  7328.               __asyncInited__ = 1;
  7329.  
  7330.               __timeoutStartId__ = setTimeout(() => { });
  7331.               mcw = __timeoutStartId__ * 2 + 1;
  7332.  
  7333.               setInterval(() => {
  7334.  
  7335.                 if (!arr.length) return;
  7336.  
  7337.                 const p = Date.now();
  7338.                 let deleteKeys = [];
  7339.                 arr.forEach((entry, key) => {
  7340.  
  7341.  
  7342.                   if (entry.cid === -1) {
  7343.                     entry.cid = -2;
  7344.                   } else if (entry.cid === -2) {
  7345.  
  7346.                     let offset = p - entry.add
  7347.                     if (offset < 0) offset = 0;
  7348.                     let delay2 = entry.delay - offset;
  7349.                     if (delay2 < 0) delay2 = 0;
  7350.                     entry.cid = setTimeout(entry.q(), delay2);
  7351.                     entry.q = null;
  7352.  
  7353.                   } else if (entry.add + entry.delay < p) {
  7354.                     deleteKeys.push(key);
  7355.  
  7356.                   }
  7357.  
  7358.                 })
  7359.  
  7360.                 for (const key of deleteKeys) arr.delete(key);
  7361.  
  7362.               }, 2000)
  7363.  
  7364.             }
  7365.  
  7366.  
  7367.  
  7368.  
  7369.             cProto.async = function (e, h) {
  7370.  
  7371.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  7372.  
  7373.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  7374.  
  7375.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  7376.  
  7377.  
  7378.               if (!this.__asyncInited__) {
  7379.                 this.__asyncInited__ = 1;
  7380.                 __asyncInit__();
  7381.               }
  7382.               mcw += 2; // 2K+3, 2K+4, ...
  7383.               if (mcw > 1e9) mcw = mcw % 1e4;
  7384.               const cid = mcw;
  7385.               const q = () => {
  7386.                 return () => {
  7387.                   console.log('async h > 8000');
  7388.                   e.call(this);
  7389.                 }
  7390.               }
  7391.               // setTimeout(q, delay)
  7392.               arr.set(cid, {
  7393.                 cid: -1, // -1 -> -2 -> cid
  7394.                 add: Date.now(),
  7395.                 q,
  7396.                 delay: h
  7397.               });
  7398.               // console.log('cid-async', cid)
  7399.               return cid;
  7400.  
  7401.             }
  7402.  
  7403.  
  7404.             cProto.cancelAsync = function (e) {
  7405.  
  7406.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  7407.  
  7408.               // console.log('cid-unasync', e)
  7409.  
  7410.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  7411.  
  7412.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  7413.  
  7414.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  7415.  
  7416.                 if (!arr.has(e)) return; // duplciated cancel
  7417.  
  7418.                 const entry = arr.get(e);
  7419.                 if (entry.cid < 0) {
  7420.                   entry.cid = 0;
  7421.                   arr.delete(e);
  7422.                 } else {
  7423.                   clearTimeout(entry.cid); // cid >= 1
  7424.                   entry.cid = 0;
  7425.                   arr.delete(e);
  7426.                 }
  7427.  
  7428.               } else {
  7429.  
  7430.                 return this.cancelAsync71(e);
  7431.  
  7432.               }
  7433.  
  7434.             }
  7435.  
  7436.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  7437.  
  7438.           } else {
  7439.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  7440.  
  7441.           }
  7442.  
  7443.         })();
  7444.  
  7445.         console.log("[End]");
  7446.  
  7447.         console.groupEnd();
  7448.  
  7449.  
  7450.  
  7451.         onManagerFound(__dummyManager__);
  7452.  
  7453.       }).catch(console.warn);
  7454.  
  7455.  
  7456.  
  7457.  
  7458.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  7459.  
  7460.  
  7461.  
  7462.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  7463.  
  7464.  
  7465.           mightFirstCheckOnYtInit();
  7466.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  7467.           console.log("[Begin]");
  7468.           (() => {
  7469.  
  7470.             const tag = "yt-live-interactivity-component-background"
  7471.             const dummy = document.createElement(tag);
  7472.  
  7473.             const cProto = getProto(dummy);
  7474.             if (!cProto || !cProto.attached) {
  7475.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7476.               return;
  7477.             }
  7478.  
  7479.  
  7480.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  7481.  
  7482.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  7483.               cProto.maybeLoadAnimationBackground = function () {
  7484.                 let toRun = true;
  7485.                 if (!this.__bypassDisableAnimationBackground__) {
  7486.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  7487.                     if (!this.lottieAnimation) {
  7488.                       if (this.useAnimationBackground === true) {
  7489.                         console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7490.                       }
  7491.                       toRun = false;
  7492.                     }
  7493.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  7494.                     if (this.useAnimationBackground === true) {
  7495.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7496.                       this.useAnimationBackground = false;
  7497.                     }
  7498.                   }
  7499.                 }
  7500.                 if (toRun) {
  7501.                   return this.maybeLoadAnimationBackground77.apply(this, arguments);
  7502.                 }
  7503.               }
  7504.  
  7505.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  7506.  
  7507.             } else {
  7508.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  7509.  
  7510.             }
  7511.  
  7512.           })();
  7513.  
  7514.           console.log("[End]");
  7515.  
  7516.           console.groupEnd();
  7517.  
  7518.  
  7519.         }).catch(console.warn);
  7520.  
  7521.       }
  7522.  
  7523.  
  7524.     }
  7525.  
  7526.  
  7527.  
  7528.  
  7529.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  7530.  
  7531.     const fixJsonParse = () => {
  7532.  
  7533.       let p1 = window.onerror;
  7534.  
  7535.       try {
  7536.         JSON.parse("{}");
  7537.       } catch (e) {
  7538.         console.warn(e);
  7539.       }
  7540.  
  7541.       let p2 = window.onerror;
  7542.  
  7543.       if (p1 !== p2) {
  7544.  
  7545.  
  7546.         console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | JS Engine Issue Found"}`,
  7547.           "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  7548.           "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  7549.         );
  7550.  
  7551.         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");
  7552.  
  7553.         console.groupEnd();
  7554.  
  7555.       }
  7556.  
  7557.     }
  7558.  
  7559.     if (CHECK_JSONPRUNE) {
  7560.       promiseForCustomYtElementsReady.then(fixJsonParse);
  7561.     }
  7562.  
  7563.   });
  7564.  
  7565.  
  7566.  
  7567. })({ IntersectionObserver });