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YouTube 超快聊天

YouTube直播聊天的终极性能提升

当前为 2023-08-30 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.54.4
  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 DE_JSONPRUNE_FOR_readyStateChangeHandler_ = 1; // jsonPrune for Ad-Blocking is not applicable to live_chat streaming
  145.   // << end >>
  146.  
  147.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  148.  
  149.   const CHANGE_DATA_FLUSH_ASYNC = true;
  150.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  151.  
  152.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  153.   // 0 = default Yt animation background [= no fix]; 
  154.   // 1 = disable default animation background [= keep special animation]; 
  155.   // 2 = disable all animation backgrounds [= no animation backbround]
  156.  
  157.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  158.  
  159.   const MAX_TOOLTIP_NO_WRAP_WIDTH = '72vw'; // '' for disable; accept values like '60px', '25vw'
  160.  
  161.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  162.   /*
  163.  
  164.     ### Time Approach
  165.  
  166.     // all below values can make the time interval > 250ms
  167.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  168.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  169.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  170.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  171.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  172.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  173.  
  174.     ### Pixel Check
  175.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  176.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  177.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  178.  
  179.     ### Example - totalDuration = 280000
  180.     totalDuration 280000
  181.     stepInterval 0.5
  182.     numOfSteps = Math.round(100 / stepInterval) = 200
  183.     time interval = 280000 / 200 = 1400ms <acceptable>
  184.  
  185.     ### Example - totalDuration = 18000
  186.     totalDuration 18000
  187.     stepInterval 5
  188.     numOfSteps = Math.round(100 / stepInterval) = 20
  189.     time interval = 18000 / 20 = 900ms <acceptable>
  190.  
  191.     ### Example - totalDuration = 5000
  192.     totalDuration 5000
  193.     stepInterval 5
  194.     numOfSteps = Math.round(100 / stepInterval) = 20
  195.     time interval = 5000 / 20 = 250ms <threshold value>
  196.  
  197.     ### Example - totalDuration = 3600
  198.     totalDuration 3600
  199.     stepInterval 5
  200.     numOfSteps = Math.round(100 / stepInterval) = 20
  201.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  202.  
  203.   */
  204.  
  205.   // =======================================================================================================
  206.  
  207.   // AUTOMAICALLY DETERMINED
  208.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  209.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  210.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  211.   let runTickerClassName = 'run-ticker';
  212.  
  213.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  214.   /*
  215.     WebP: data:image/webp;base64,UklGRjAB
  216.     PNG: data:image/png;base64,iVBORw0KGg==
  217.     JPEG: data:image/jpeg;base64,/9j/4AA=
  218.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  219.     BMP: data:image/bmp;base64,Qk1oAAAA
  220.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  221.  
  222.     WebP: data:image/webp;base64,AAAAAAA=
  223.     PNG:  data:image/png;base64,AAAAAAA=
  224.     JPEG: data:image/jpeg;base64,AAAAAAA=
  225.     GIF:  data:image/gif;base64,AAAAAAA=
  226.     BMP:  data:image/bmp;base64,AAAAAAA=
  227.  
  228.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  229.  
  230.  
  231.   */
  232.  
  233.   // image sizing code
  234.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  235.  
  236.  
  237.   //   function KC(a, b, c, d) {
  238.   //     d = void 0 === d ? "width" : d;
  239.   //     if (!a || !a.length)
  240.   //         return null;
  241.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  242.   //         var e = window.devicePixelRatio;
  243.   //         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"));
  244.   //         HC = e
  245.   //     } else
  246.   //         HC || (HC = window.devicePixelRatio);
  247.   //     e = HC;
  248.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  249.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  250.   //         return a[0].url || null;
  251.   //     e = a.length;
  252.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  253.   //         return a[e - 1].url || null;
  254.   //     if (c)
  255.   //         for (var h = 0; h < e; h++)
  256.   //             if (0 <= a[h].url.indexOf(c))
  257.   //                 return a[h].url || null;
  258.   //     for (c = 0; c < e; c++)
  259.   //         if (a[c][d] >= b)
  260.   //             return a[c].url || null;
  261.   //     for (b = e - 1; 0 < b; b--)
  262.   //         if (a[b][d])
  263.   //             return a[b].url || null;
  264.   //     return a[0].url || null
  265.   // }
  266.  
  267.   const { IntersectionObserver } = __CONTEXT__;
  268.  
  269.   /** @type {globalThis.PromiseConstructor} */
  270.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  271.  
  272.   let jsonParseFix = null;
  273.  
  274.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  275.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  276.  
  277.   // necessity of cssText3_smooth_transform_position to be checked.
  278.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  279.  
  280.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  281.         position: static !important;
  282.     }
  283.  
  284.   `: '';
  285.  
  286.   // fallback if dummy style fn fails
  287.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  288.  
  289.     /* optional */
  290.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  291.         height: auto !important;
  292.         min-height: unset !important;
  293.     }
  294.  
  295.     #items.style-scope.yt-live-chat-item-list-renderer {
  296.         transform: translateY(0px) !important;
  297.     }
  298.  
  299.     /* optional */
  300.  
  301.   `: '';
  302.  
  303.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  304.  
  305.     /* ------------------------------------------------------------------------------------------------------------- */
  306.  
  307.     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 {
  308.         contain: layout style;
  309.     }
  310.  
  311.     #items.style-scope.yt-live-chat-item-list-renderer {
  312.         contain: layout paint style;
  313.     }
  314.  
  315.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  316.         contain: style;
  317.     }
  318.  
  319.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  320.         contain: size style;
  321.     }
  322.  
  323.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  324.         contain: size layout paint style;
  325.     }
  326.  
  327.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  328.         contain: layout paint style;
  329.     }
  330.  
  331.     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 {
  332.         contain: layout style;
  333.     }
  334.  
  335.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  336.         contain: layout paint style;
  337.     }
  338.  
  339.     /* ------------------------------------------------------------------------------------------------------------- */
  340.  
  341.   ` : '';
  342.  
  343.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  344.  
  345.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  346.         top: 4px;
  347.         transition-property: top;
  348.         bottom: unset;
  349.     }
  350.  
  351.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  352.         top: -42px;
  353.     }
  354.  
  355.   `: '';
  356.  
  357.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  358.  
  359.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  360.         contain: layout style;
  361.     }
  362.  
  363.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  364.         overflow: visible;
  365.     }
  366.  
  367.   `: '';
  368.  
  369.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  370.  
  371.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  372.         --yt-live-chat-action-panel-top-border: none;
  373.     }
  374.  
  375.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  376.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  377.     }
  378.  
  379.     html #panel-pages.yt-live-chat-renderer {
  380.         border-top: 0;
  381.         border-bottom: 0;
  382.     }
  383.  
  384.   `: '';
  385.  
  386.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  387.  
  388.     img,
  389.     yt-img-shadow[height][width],
  390.     yt-img-shadow {
  391.         content-visibility: visible !important;
  392.     }
  393.  
  394.   `  : '';
  395.  
  396.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  397.  
  398.     /* remove YouTube constant will-change */
  399.     /* constant value will slow down the performance; default auto */
  400.  
  401.     /* www-player.css */
  402.     html .ytp-contextmenu,
  403.     html .ytp-settings-menu {
  404.         will-change: unset;
  405.     }
  406.  
  407.     /* frequently matched elements */
  408.     html .fill.yt-interaction,
  409.     html .stroke.yt-interaction,
  410.     html .yt-spec-touch-feedback-shape__fill,
  411.     html .yt-spec-touch-feedback-shape__stroke {
  412.         will-change: unset;
  413.     }
  414.  
  415.     /* live_chat_polymer.js */
  416.     /*
  417.     html .toggle-button.tp-yt-paper-toggle-button,
  418.     html #primaryProgress.tp-yt-paper-progress,
  419.     html #secondaryProgress.tp-yt-paper-progress,
  420.     html #onRadio.tp-yt-paper-radio-button,
  421.     html .fill.yt-interaction,
  422.     html .stroke.yt-interaction,
  423.     html .yt-spec-touch-feedback-shape__fill,
  424.     html .yt-spec-touch-feedback-shape__stroke {
  425.         will-change: unset;
  426.     }
  427.     */
  428.  
  429.     /* desktop_polymer_enable_wil_icons.js */
  430.     /* html .fill.yt-interaction,
  431.     html .stroke.yt-interaction, */
  432.     html tp-yt-app-header::before,
  433.     html tp-yt-iron-list,
  434.     html #items.tp-yt-iron-list > *,
  435.     html #onRadio.tp-yt-paper-radio-button,
  436.     html .toggle-button.tp-yt-paper-toggle-button,
  437.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  438.     html #items.ytd-post-multi-image-renderer,
  439.     html #items.ytd-horizontal-card-list-renderer,
  440.     html #items.yt-horizontal-list-renderer,
  441.     html #left-arrow.yt-horizontal-list-renderer,
  442.     html #right-arrow.yt-horizontal-list-renderer,
  443.     html #items.ytd-video-description-infocards-section-renderer,
  444.     html #items.ytd-video-description-music-section-renderer,
  445.     html #chips.ytd-feed-filter-chip-bar-renderer,
  446.     html #chips.yt-chip-cloud-renderer,
  447.     html #items.ytd-merch-shelf-renderer,
  448.     html #items.ytd-product-details-image-carousel-renderer,
  449.     html ytd-video-preview,
  450.     html #player-container.ytd-video-preview,
  451.     html #primaryProgress.tp-yt-paper-progress,
  452.     html #secondaryProgress.tp-yt-paper-progress,
  453.     html ytd-miniplayer[enabled] /* ,
  454.     html .yt-spec-touch-feedback-shape__fill,
  455.     html .yt-spec-touch-feedback-shape__stroke */ {
  456.         will-change: unset;
  457.     }
  458.  
  459.     /* other */
  460.     .ytp-videowall-still-info-content[class],
  461.     .ytp-suggestion-image[class] {
  462.         will-change: unset !important;
  463.     }
  464.  
  465.   ` : '';
  466.  
  467.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  468.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  469.  
  470.     elzm-fonts {
  471.         visibility: collapse;
  472.         position: fixed;
  473.         top: -10px;
  474.         left: -10px;
  475.         font-size: 10pt;
  476.         line-height: 100%;
  477.         width: 100px;
  478.         height: 100px;
  479.         transform: scale(0.1);
  480.         transform: scale(0.01);
  481.         transform: scale(0.001);
  482.         transform-origin: 0 0;
  483.         contain: strict;
  484.         display: block;
  485.  
  486.         pointer-events: none !important;
  487.         user-select: none !important;
  488.     }
  489.  
  490.     elzm-fonts[id]#elzm-fonts-yk75g {
  491.         user-select: none !important;
  492.         pointer-events: none !important;
  493.     }
  494.  
  495.     elzm-font {
  496.         visibility: collapse;
  497.         position: absolute;
  498.         line-height: 100%;
  499.         width: 100px;
  500.         height: 100px;
  501.         contain: strict;
  502.         display: block;
  503.  
  504.         user-select: none !important;
  505.         pointer-events: none !important;
  506.     }
  507.  
  508.     elzm-font::before {
  509.         visibility: collapse;
  510.         position: absolute;
  511.         line-height: 100%;
  512.         width: 100px;
  513.         height: 100px;
  514.         contain: strict;
  515.         display: block;
  516.  
  517.         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';
  518.  
  519.         user-select: none !important;
  520.         pointer-events: none !important;
  521.     }
  522.  
  523.   `: '';
  524.  
  525.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  526.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  527.         -webkit-backdrop-filter: none;
  528.         backdrop-filter: none;
  529.     }
  530.   `: '';
  531.  
  532.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  533.  
  534.     @keyframes blinker-miuzp {
  535.         0%, 60%, 100% {
  536.             opacity: 1;
  537.         }
  538.         30% {
  539.             opacity: 0.6;
  540.         }
  541.     }
  542.  
  543.     yt-icon-button#show-more.has-new-messages-miuzp {
  544.         animation: blinker-miuzp 1.74s linear infinite;
  545.     }
  546.  
  547.   `: '';
  548.  
  549.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  550.     
  551.     yt-live-chat-paid-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  552.       pointer-events: none !important;
  553.     }
  554.  
  555.     yt-live-chat-membership-item-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  556.       pointer-events: none !important;
  557.     }
  558.  
  559.     yt-live-chat-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  560.       pointer-events: none !important;
  561.     }
  562.  
  563.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  564.       pointer-events: none !important;
  565.     }
  566.  
  567.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  568.       pointer-events: none !important;
  569.     }
  570.  
  571.   `: '';
  572.  
  573.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  574.   
  575.  
  576.     tp-yt-paper-tooltip[role="tooltip"] {
  577.       box-sizing: content-box !important; 
  578.       margin: 0px !important;
  579.       padding: 0px !important;
  580.       contain: none !important;
  581.     }
  582.  
  583.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  584.       box-sizing: content-box !important;
  585.       display: inline-block;
  586.       contain: none !important;
  587.     }
  588.  
  589.  
  590.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  591.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  592.       width: max-content;
  593.       text-overflow: ellipsis;
  594.       overflow: hidden;
  595.       white-space: nowrap;
  596.     }
  597.  
  598.  
  599.   `: '';
  600.  
  601.  
  602.   const addCss = () => `
  603.  
  604.     @property --ticker-rtime {
  605.       syntax: "<percentage>";
  606.       inherits: false;
  607.       initial-value: 0%;
  608.     }
  609.  
  610.     /*
  611.     .run-ticker {
  612.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  613.     }
  614.  
  615.     .run-ticker-test {
  616.       background: #00000001;
  617.     }
  618.  
  619.     .run-ticker-forced,
  620.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  621.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  622.     {
  623.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  624.     }
  625.     */
  626.  
  627.     .run-ticker {
  628.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  629.     }
  630.  
  631.     .run-ticker,
  632.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  633.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  634.     {
  635.       background: var(--ticker-bg) !important;
  636.     }
  637.  
  638.     yt-live-chat-ticker-dummy777-item-renderer {
  639.       background: #00000001;
  640.     }
  641.  
  642.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  643.       position: fixed !important;
  644.       top: -1000px !important;
  645.       left: -1000px !important;
  646.       font-size: 1px !important;
  647.       color: transparent !important;
  648.       pointer-events: none !important;
  649.       z-index: -1 !important;
  650.       contain: strict !important;
  651.       box-sizing: border-box !important;
  652.       pointer-events: none !important;
  653.       user-select: none !important;
  654.       max-width: 1px !important;
  655.       max-height: 1px !important;
  656.       overflow: hidden !important;
  657.       visibility: collapse !important;
  658.       display: none !important;
  659.     }
  660.  
  661.     yt-live-chat-ticker-dummy777-item-renderer #container {
  662.       background: inherit;
  663.     }
  664.  
  665.  
  666.     ${cssText8_fonts_pre_render}
  667.  
  668.     ${cssText9_no_backdrop_filter_when_menu_shown}
  669.  
  670.     @supports (contain: layout paint style) {
  671.  
  672.       ${cssText5}
  673.  
  674.     }
  675.  
  676.     @supports (color: var(--general)) {
  677.  
  678.       html {
  679.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  680.       }
  681.  
  682.       ${cssText3_smooth_transform_position}
  683.  
  684.       ${cssText7c_will_change_unset}
  685.  
  686.       ${cssText7b_content_visibility_unset}
  687.  
  688.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  689.           overflow-y: scroll;
  690.           padding-right: 0;
  691.       }
  692.  
  693.       ${cssText4_smooth_transform_forced_props}
  694.  
  695.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  696.           pointer-events: none !important;
  697.       }
  698.  
  699.       #continuations, #continuations * {
  700.           contain: strict;
  701.           position: fixed;
  702.           top: 2px;
  703.           height: 1px;
  704.           width: 2px;
  705.           height: 1px;
  706.           visibility: collapse;
  707.       }
  708.  
  709.       ${cssText6b_show_more_button}
  710.  
  711.       ${cssText6d_input_panel_border}
  712.  
  713.       ${cssText6c_input_panel_overflow}
  714.  
  715.     }
  716.  
  717.  
  718.     @supports (overflow-anchor: auto) {
  719.  
  720.       .no-anchor * {
  721.           overflow-anchor: none;
  722.       }
  723.       .no-anchor > item-anchor {
  724.           overflow-anchor: auto;
  725.       }
  726.  
  727.       item-anchor {
  728.  
  729.           height:1px;
  730.           width: 100%;
  731.           transform: scaleY(0.00001);
  732.           transform-origin:0 0;
  733.           contain: strict;
  734.           opacity:0;
  735.           display:flex;
  736.           position:relative;
  737.           flex-shrink:0;
  738.           flex-grow:0;
  739.           margin-bottom:0;
  740.           overflow:hidden;
  741.           box-sizing:border-box;
  742.           visibility: visible;
  743.           content-visibility: visible;
  744.           contain-intrinsic-size: auto 1px;
  745.           pointer-events:none !important;
  746.  
  747.       }
  748.  
  749.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  750.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  751.       }
  752.  
  753.       html item-anchor {
  754.  
  755.           height: 1px;
  756.           width: 1px;
  757.           top: auto;
  758.           left: auto;
  759.           right: auto;
  760.           bottom: auto;
  761.           transform: translateY(-1px);
  762.           position: absolute;
  763.           z-index: -1;
  764.  
  765.       }
  766.  
  767.     }
  768.  
  769.     @supports (color: var(--pre-rendering)) {
  770.  
  771.       @keyframes dontRenderAnimation {
  772.           0% {
  773.               background-position-x: 3px;
  774.           }
  775.           100% {
  776.               background-position-x: 4px;
  777.           }
  778.       }
  779.  
  780.       .dont-render[class] {
  781.           /* visibility: collapse !important; */
  782.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  783.  
  784.           transform: scale(0.01) !important;
  785.           transform: scale(0.00001) !important;
  786.           transform: scale(0.0000001) !important;
  787.           transform-origin: 0 0 !important;
  788.           z-index: -1 !important;
  789.           contain: strict !important;
  790.           box-sizing: border-box !important;
  791.  
  792.           height: 1px !important;
  793.           height: 0.1px !important;
  794.           height: 0.01px !important;
  795.           height: 0.0001px !important;
  796.           height: 0.000001px !important;
  797.  
  798.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  799.  
  800.           pointer-events: none !important;
  801.           user-select: none !important;
  802.  
  803.       }
  804.  
  805.       #sk35z {
  806.         display: block !important;
  807.  
  808.         visibility: collapse !important;
  809.  
  810.         transform: scale(0.01) !important;
  811.         transform: scale(0.00001) !important;
  812.         transform: scale(0.0000001) !important;
  813.         transform-origin: 0 0 !important;
  814.         z-index: -1 !important;
  815.         contain: strict !important;
  816.         box-sizing: border-box !important;
  817.  
  818.         height: 1px !important;
  819.         height: 0.1px !important;
  820.         height: 0.01px !important;
  821.         height: 0.0001px !important;
  822.         height: 0.000001px !important;
  823.  
  824.         position: absolute !important;
  825.         top: -1000px !important;
  826.         left: -1000px !important;
  827.  
  828.       }
  829.  
  830.     }
  831.  
  832.     [rNgzQ] {
  833.       opacity: 0 !important;
  834.       pointer-events: none !important;
  835.     }
  836.  
  837.     ${cssText12_nowrap_tooltip}
  838.     
  839.  
  840.     ${cssText11_entire_message_clickable}
  841.  
  842.     ${cssText10_show_more_blinker}
  843.  
  844.   `;
  845.  
  846.  
  847.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  848.  
  849.   // Create a unique key for the script and check if it is already running
  850.   const hkey_script = 'mchbwnoasqph';
  851.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  852.   win[hkey_script] = true;
  853.  
  854.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  855.  
  856.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  857.     if (te4 < 3) {
  858.       setTimeout(() => { });
  859.       setTimeout(() => { });
  860.     }
  861.  
  862.   }
  863.  
  864.   class Mutex {
  865.  
  866.     constructor() {
  867.       this.p = Promise.resolve()
  868.     }
  869.  
  870.     /**
  871.      *  @param {(lockResolve: () => void)} f
  872.      */
  873.     lockWith(f) {
  874.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  875.     }
  876.  
  877.   }
  878.  
  879.   function dr(s) {
  880.     // reserved for future use
  881.     return s;
  882.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  883.   }
  884.  
  885.   const getProto = (element) => {
  886.     if (element) {
  887.       const cnt = element.inst || element;
  888.       return cnt.constructor.prototype || null;
  889.     }
  890.     return null;
  891.   }
  892.  
  893.   const assertor = (f) => f() || console.assert(false, f + "");
  894.  
  895.   const fnIntegrity = (f, d) => {
  896.     if (!f || typeof f !== 'function') {
  897.       console.warn('f is not a function', f);
  898.       return;
  899.     }
  900.     let p = f + "", s = 0, j = -1, w = 0;
  901.     for (let i = 0, l = p.length; i < l; i++) {
  902.       const t = p[i];
  903.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  904.         if (j < i - 1) w++;
  905.         j = i;
  906.       } else {
  907.         s++;
  908.       }
  909.     }
  910.     let itz = `${f.length}.${s}.${w}`;
  911.     if (!d) {
  912.       return itz;
  913.     } else {
  914.       return itz === d;
  915.     }
  916.   }
  917.  
  918.  
  919.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  920.  
  921.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  922.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  923.   if (!isContainSupport) {
  924.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  925.   } else {
  926.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  927.   }
  928.  
  929.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  930.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  931.   if (!isOverflowAnchorSupport) {
  932.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  933.   } else {
  934.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  935.   }
  936.  
  937.   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.
  938.  
  939.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  940.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  941.  
  942.   let hasTimerModified = null;
  943.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  944.  
  945.   const fxOperator = (proto, propertyName) => {
  946.     let propertyDescriptorGetter = null;
  947.     try {
  948.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  949.     } catch (e) { }
  950.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  951.       try {
  952.  
  953.         return propertyDescriptorGetter.call(dr(e));
  954.       } catch (e) { }
  955.       return e[propertyName];
  956.     } : (e) => e[propertyName];
  957.   };
  958.  
  959.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  960.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  961.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  962.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  963.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  964.  
  965.   const groupCollapsed = (text1, text2) => {
  966.  
  967.     console.groupCollapsed(`%c${text1}%c${text2}`,
  968.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  969.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  970.     );
  971.   }
  972.  
  973.  
  974.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  975.   const onRegistryReady = (callback) => {
  976.     if (typeof customElements === 'undefined') {
  977.       if (!('__CE_registry' in document)) {
  978.         // https://github.com/webcomponents/polyfills/
  979.         Object.defineProperty(document, '__CE_registry', {
  980.           get() {
  981.             // return undefined
  982.           },
  983.           set(nv) {
  984.             if (typeof nv == 'object') {
  985.               delete this.__CE_registry;
  986.               this.__CE_registry = nv;
  987.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  988.             }
  989.             return true;
  990.           },
  991.           enumerable: false,
  992.           configurable: true
  993.         })
  994.       }
  995.       let eventHandler = (evt) => {
  996.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  997.         const f = callback;
  998.         callback = null;
  999.         eventHandler = null;
  1000.         f();
  1001.       };
  1002.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1003.     } else {
  1004.       callback();
  1005.     }
  1006.   };
  1007.  
  1008.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1009.  
  1010.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1011.  
  1012.     return new Promise(resolve => {
  1013.  
  1014.       let ro = new ResizeObserver(entries => {
  1015.         if (entries && entries.length >= 1) {
  1016.           resolve();
  1017.           ro.disconnect();
  1018.           ro = null;
  1019.         }
  1020.       });
  1021.       ro.observe(sizingTarget);
  1022.  
  1023.  
  1024.  
  1025.     });
  1026.  
  1027.   } : (sizingTarget) => {
  1028.  
  1029.  
  1030.     return new Promise(resolve => {
  1031.  
  1032.       let io = new IntersectionObserver(entries => {
  1033.         if (entries && entries.length >= 1) {
  1034.           resolve();
  1035.           io.disconnect();
  1036.           io = null;
  1037.         }
  1038.       });
  1039.       io.observe(sizingTarget);
  1040.  
  1041.  
  1042.  
  1043.     });
  1044.  
  1045.   };
  1046.  
  1047.   /* globals WeakRef:false */
  1048.  
  1049.   /** @type {(o: Object | null) => WeakRef | null} */
  1050.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1051.  
  1052.   /** @type {(wr: Object | null) => Object | null} */
  1053.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1054.  
  1055.   const { addCssManaged } = (() => {
  1056.  
  1057.     const addFontPreRendering = () => {
  1058.  
  1059.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1060.  
  1061.       let efsContainer = document.createElement('elzm-fonts');
  1062.       efsContainer.id = 'elzm-fonts-yk75g'
  1063.  
  1064.       const arr = [];
  1065.       let p = document.createElement('elzm-font');
  1066.       arr.push(p);
  1067.  
  1068.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1069.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1070.  
  1071.           p = document.createElement('elzm-font');
  1072.           p.style.fontWeight = size;
  1073.           arr.push(p);
  1074.         }
  1075.       }
  1076.  
  1077.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1078.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1079.  
  1080.           p = document.createElement('elzm-font');
  1081.           p.style.fontFamily = 'Roboto';
  1082.           p.style.fontWeight = size;
  1083.           arr.push(p);
  1084.         }
  1085.       }
  1086.  
  1087.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1088.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1089.  
  1090.           p = document.createElement('elzm-font');
  1091.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1092.           p.style.fontWeight = size;
  1093.           arr.push(p);
  1094.         }
  1095.       }
  1096.  
  1097.  
  1098.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1099.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1100.  
  1101.           p = document.createElement('elzm-font');
  1102.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1103.           p.style.fontWeight = size;
  1104.           arr.push(p);
  1105.         }
  1106.       }
  1107.  
  1108.  
  1109.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1110.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1111.  
  1112.           p = document.createElement('elzm-font');
  1113.           p.style.fontFamily = 'sans-serif';
  1114.           p.style.fontWeight = size;
  1115.           arr.push(p);
  1116.         }
  1117.       }
  1118.  
  1119.       console.log('number of elzm-font elements', arr.length);
  1120.  
  1121.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1122.  
  1123.       (document.body || document.documentElement).appendChild(efsContainer);
  1124.  
  1125.  
  1126.       console.log('elzm-font elements have been added to the page for rendering.');
  1127.  
  1128.       console.groupEnd();
  1129.  
  1130.     }
  1131.  
  1132.     let isCssAdded = false;
  1133.  
  1134.     function addCssElement() {
  1135.       let s = document.createElement('style');
  1136.       s.id = 'ewRvC';
  1137.       return s;
  1138.     }
  1139.  
  1140.     const addCssManaged = () => {
  1141.       if (!isCssAdded && document.documentElement && document.head) {
  1142.         isCssAdded = true;
  1143.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1144.         if (ENABLE_FONT_PRE_RENDERING) {
  1145.           Promise.resolve().then(addFontPreRendering)
  1146.         }
  1147.       }
  1148.     }
  1149.  
  1150.     return { addCssManaged };
  1151.   })();
  1152.  
  1153.  
  1154.   const { setupStyle } = (() => {
  1155.  
  1156.     const sp7 = Symbol();
  1157.  
  1158.     const proxyHelperFn = (dummy) => ({
  1159.  
  1160.       get(target, prop) {
  1161.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1162.       },
  1163.       set(target, prop, value) {
  1164.         if (!(prop in dummy)) {
  1165.           target[prop] = value;
  1166.         }
  1167.         return true;
  1168.       },
  1169.       has(target, prop) {
  1170.         return (prop in target);
  1171.       },
  1172.       deleteProperty(target, prop) {
  1173.         return true;
  1174.       },
  1175.       ownKeys(target) {
  1176.         return Object.keys(target);
  1177.       },
  1178.       defineProperty(target, key, descriptor) {
  1179.         return Object.defineProperty(target, key, descriptor);
  1180.       },
  1181.       getOwnPropertyDescriptor(target, key) {
  1182.         return Object.getOwnPropertyDescriptor(target, key);
  1183.       },
  1184.  
  1185.     });
  1186.  
  1187.     const setupStyle = (m1, m2) => {
  1188.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1189.  
  1190.       const dummy1v = {
  1191.         transform: '',
  1192.         height: '',
  1193.         minHeight: '',
  1194.         paddingBottom: '',
  1195.         paddingTop: ''
  1196.       };
  1197.  
  1198.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1199.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1200.         dummy1v[k] = dummyStyleFn(k);
  1201.       }
  1202.  
  1203.       const dummy1p = proxyHelperFn(dummy1v);
  1204.       const sp1v = new Proxy(m1.style, dummy1p);
  1205.       const sp2v = new Proxy(m2.style, dummy1p);
  1206.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1207.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1208.       m1.removeAttribute("style");
  1209.       m2.removeAttribute("style");
  1210.  
  1211.     }
  1212.  
  1213.     return { setupStyle };
  1214.  
  1215.   })();
  1216.  
  1217.  
  1218.  
  1219.   function setThumbnails(config) {
  1220.  
  1221.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1222.  
  1223.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1224.  
  1225.  
  1226.       if (thumbnails && thumbnails.length > 0) {
  1227.         if (flag0 > 0 && thumbnails.length > 1) {
  1228.           let pSize = 0;
  1229.           let newThumbnails = [];
  1230.           for (const thumbnail of thumbnails) {
  1231.             if (!thumbnail || !thumbnail.url) continue;
  1232.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1233.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1234.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1235.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1236.               newThumbnails.push(thumbnail);
  1237.               if (imageLinks) imageLinks.add(thumbnail.url);
  1238.             }
  1239.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1240.               pSize = thumbnail.width;
  1241.             }
  1242.           }
  1243.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1244.             baseObject.thumbnails = newThumbnails;
  1245.           } else {
  1246.             newThumbnails.length = 0;
  1247.           }
  1248.           newThumbnails = null;
  1249.         } else {
  1250.           for (const thumbnail of thumbnails) {
  1251.             if (thumbnail && thumbnail.url) {
  1252.               if (imageLinks) imageLinks.add(thumbnail.url);
  1253.             }
  1254.           }
  1255.         }
  1256.       }
  1257.  
  1258.     }
  1259.   }
  1260.  
  1261.   function fixLiveChatItem(item, imageLinks) {
  1262.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1263.     if (liveChatTextMessageRenderer) {
  1264.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1265.       if (messageRuns && messageRuns.length > 0) {
  1266.         for (const run of messageRuns) {
  1267.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1268.           setThumbnails({
  1269.             baseObject: emojiImage,
  1270.             thumbnails: emojiImage.thumbnails,
  1271.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1272.             imageLinks
  1273.           });
  1274.         }
  1275.       }
  1276.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1277.       setThumbnails({
  1278.         baseObject: authorPhoto,
  1279.         thumbnails: authorPhoto.thumbnails,
  1280.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1281.         imageLinks
  1282.       });
  1283.     }
  1284.   }
  1285.  
  1286.  
  1287.   const flagsFnOnInterval = (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) ? (() => {
  1288.  
  1289.     const flags = () => {
  1290.       try {
  1291.         return ytcfg.data_.EXPERIMENT_FLAGS;
  1292.       } catch (e) { }
  1293.       return null;
  1294.     };
  1295.  
  1296.     const flagsForced = () => {
  1297.       try {
  1298.         return ytcfg.data_.EXPERIMENTS_FORCED_FLAGS;
  1299.       } catch (e) { }
  1300.       return null;
  1301.     };
  1302.  
  1303.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1304.  
  1305.       if (!EXPERIMENT_FLAGS) return;
  1306.  
  1307.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1308.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1309.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1310.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1311.         }
  1312.       }
  1313.  
  1314.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1315.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1316.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1317.       }
  1318.  
  1319.     };
  1320.  
  1321.     const uf = (EXPERIMENT_FLAGS) => {
  1322.       if (EXPERIMENT_FLAGS === undefined) EXPERIMENT_FLAGS = flags();
  1323.       if (EXPERIMENT_FLAGS) {
  1324.         flagsFn(EXPERIMENT_FLAGS);
  1325.         flagsFn(flagsForced());
  1326.       }
  1327.     }
  1328.  
  1329.     uf();
  1330.  
  1331.     const flagsFnOnInterval = (setInterval, clearInterval) => {
  1332.  
  1333.       uf();
  1334.       let cidFlags = 0;
  1335.       let kd = 0;
  1336.       new Promise(flagResolve => {
  1337.  
  1338.         const flagTimer = () => {
  1339.           const EXPERIMENT_FLAGS = flags();
  1340.           if (!EXPERIMENT_FLAGS) return;
  1341.           uf(EXPERIMENT_FLAGS);
  1342.           if (kd > 0) return;
  1343.           kd = 1;
  1344.           const delay1000 = new Promise(resolve => setTimeout(resolve, 1000));
  1345.           const moDeferred = new Promise(resolve => {
  1346.             let mo = new MutationObserver(() => {
  1347.               if (mo) {
  1348.                 mo.disconnect();
  1349.                 mo.takeRecords();
  1350.                 mo = null;
  1351.                 resolve();
  1352.               }
  1353.             });
  1354.             mo.observe(document, { subtree: true, childList: true });
  1355.           });
  1356.           Promise.race([delay1000, moDeferred]).then(flagResolve);
  1357.         };
  1358.  
  1359.         uf();
  1360.         cidFlags = setInterval(flagTimer, 1);
  1361.       }).then(() => {
  1362.         if (cidFlags > 0) clearInterval(cidFlags);
  1363.         cidFlags = 0;
  1364.         uf();
  1365.       });
  1366.  
  1367.     }
  1368.  
  1369.     return flagsFnOnInterval;
  1370.  
  1371.   })() : null;
  1372.  
  1373.   let kptPF = null;
  1374.   const emojiPrefetched = new Set();
  1375.   const authorPhotoPrefetched = new Set();
  1376.  
  1377.   function linker(link, rel, href, _as) {
  1378.     return new Promise(resolve => {
  1379.       if (!link) link = document.createElement('link');
  1380.       link.rel = rel;
  1381.       if (_as) link.setAttribute('as', _as);
  1382.       link.onload = function () {
  1383.         resolve({
  1384.           link: this,
  1385.           success: true
  1386.         })
  1387.         this.remove();
  1388.       };
  1389.       link.onerror = function () {
  1390.         resolve({
  1391.           link: this,
  1392.           success: false
  1393.         });
  1394.         this.remove();
  1395.       };
  1396.       link.href = href;
  1397.       document.head.appendChild(link);
  1398.       link = null;
  1399.     });
  1400.   }
  1401.  
  1402.  
  1403.  
  1404.   const cleanContext = async (win) => {
  1405.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1406.     try {
  1407.       let mx = 16; // MAX TRIAL
  1408.       const frameId = 'vanillajs-iframe-v1';
  1409.       /** @type {HTMLIFrameElement | null} */
  1410.       let frame = document.getElementById(frameId);
  1411.       let removeIframeFn = null;
  1412.       if (!frame) {
  1413.         frame = document.createElement('iframe');
  1414.         frame.id = 'vanillajs-iframe-v1';
  1415.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1416.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1417.         n.appendChild(frame);
  1418.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1419.         const root = document.documentElement;
  1420.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1421.         removeIframeFn = (setTimeout) => {
  1422.           const removeIframeOnDocumentReady = (e) => {
  1423.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1424.             win = null;
  1425.             setTimeout(() => {
  1426.               n.remove();
  1427.               n = null;
  1428.             }, 200);
  1429.           }
  1430.           if (document.readyState !== 'loading') {
  1431.             removeIframeOnDocumentReady();
  1432.           } else {
  1433.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1434.           }
  1435.         }
  1436.       }
  1437.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1438.       const fc = frame.contentWindow;
  1439.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1440.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1441.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1442.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1443.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1444.  
  1445.       /** @type {HTMLElement} */
  1446.       const HTMLElementProto = fc.HTMLElement.prototype;
  1447.       /** @type {EventTarget} */
  1448.       const EventTargetProto = fc.EventTarget.prototype;
  1449.       jsonParseFix = {
  1450.         _JSON: fc.JSON, _parse: fc.JSON.parse
  1451.       }
  1452.       return {
  1453.         ...res,
  1454.         animate: HTMLElementProto.animate,
  1455.         addEventListener: EventTargetProto.addEventListener,
  1456.         removeEventListener: EventTargetProto.removeEventListener
  1457.       };
  1458.     } catch (e) {
  1459.       console.warn(e);
  1460.       return null;
  1461.     }
  1462.   };
  1463.  
  1464.   cleanContext(win).then(__CONTEXT__ => {
  1465.     if (!__CONTEXT__) return null;
  1466.  
  1467.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1468.  
  1469.  
  1470.     let rafPromiseForTickers = null;
  1471.     const getRafPromiseForTickers = () => (rafPromiseForTickers = (rafPromiseForTickers || new Promise(resolve => {
  1472.       requestAnimationFrame(() => {
  1473.         rafPromiseForTickers = null;
  1474.         resolve();
  1475.       });
  1476.     })));
  1477.  
  1478.     let playerState = null;
  1479.  
  1480.     let aeConstructor = null;
  1481.  
  1482.     // << __openedChanged82 >>
  1483.     let currentMenuPivotWR = null;
  1484.  
  1485.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1486.     const beforeParticipantsMap = new WeakMap();
  1487.     // << end >>
  1488.  
  1489.  
  1490.  
  1491.     // << if onRegistryReadyForDOMOperations >>
  1492.  
  1493.     let dt0 = Date.now() - 2000;
  1494.     const dateNow = () => Date.now() - dt0;
  1495.     // let lastScroll = 0;
  1496.     // let lastLShow = 0;
  1497.     let lastWheel = 0;
  1498.     let lastMouseDown = 0;
  1499.     let lastMouseUp = 0;
  1500.     let currentMouseDown = false;
  1501.     let lastTouchDown = 0;
  1502.     let lastTouchUp = 0;
  1503.     let currentTouchDown = false;
  1504.     let lastUserInteraction = 0;
  1505.  
  1506.     let scrollChatFn = null;
  1507.  
  1508.     let skipDontRender = true; // true first; false by flushActiveItems_
  1509.     let allowDontRender = null;
  1510.  
  1511.     // ---- #items mutation ----
  1512.     let sk35zResolveFn = null;
  1513.     let firstList = true;
  1514.  
  1515.     // << end >>
  1516.  
  1517.     class RAFHub {
  1518.       constructor() {
  1519.         /** @type {number} */
  1520.         this.startAt = 8170;
  1521.         /** @type {number} */
  1522.         this.counter = 0;
  1523.         /** @type {number} */
  1524.         this.rid = 0;
  1525.         /** @type {Map<number, FrameRequestCallback>} */
  1526.         this.funcs = new Map();
  1527.         const funcs = this.funcs;
  1528.         /** @type {FrameRequestCallback} */
  1529.         this.bCallback = this.mCallback.bind(this);
  1530.         this.pClear = () => funcs.clear();
  1531.         this.keepRAF = false;
  1532.       }
  1533.       /** @param {DOMHighResTimeStamp} highResTime */
  1534.       mCallback(highResTime) {
  1535.         this.rid = 0;
  1536.         Promise.resolve().then(this.pClear);
  1537.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1538.       }
  1539.       /** @param {FrameRequestCallback} f */
  1540.       request(f) {
  1541.         if (this.counter > 1e9) this.counter = 9;
  1542.         let cid = this.startAt + (++this.counter);
  1543.         this.funcs.set(cid, f);
  1544.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1545.         return cid;
  1546.       }
  1547.       /** @param {number} cid */
  1548.       cancel(cid) {
  1549.         cid = +cid;
  1550.         if (cid > 0) {
  1551.           if (cid <= this.startAt) {
  1552.             return cancelAnimationFrame(cid);
  1553.           }
  1554.           if (this.rid > 0) {
  1555.             this.funcs.delete(cid);
  1556.             if (this.funcs.size === 0 && !this.keepRAF) {
  1557.               cancelAnimationFrame(this.rid);
  1558.               this.rid = 0;
  1559.             }
  1560.           }
  1561.         }
  1562.       }
  1563.     }
  1564.  
  1565.     function basePrefetching() {
  1566.  
  1567.       new Promise(resolve => {
  1568.  
  1569.         if (document.readyState !== 'loading') {
  1570.           resolve();
  1571.         } else {
  1572.           win.addEventListener("DOMContentLoaded", resolve, false);
  1573.         }
  1574.  
  1575.       }).then(() => {
  1576.         const hostL1 = [
  1577.           'https://www.youtube.com', 'https://googlevideo.com',
  1578.           'https://googleapis.com', 'https://accounts.youtube.com',
  1579.           'https://www.gstatic.com', 'https://ggpht.com',
  1580.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1581.         ];
  1582.  
  1583.         const hostL2 = [
  1584.           'https://youtube.com',
  1585.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1586.         ];
  1587.  
  1588.         let link = null;
  1589.  
  1590.         function kn() {
  1591.  
  1592.           link = document.createElement('link');
  1593.           if (link.relList && link.relList.supports) {
  1594.             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)
  1595.           } else {
  1596.             kptPF = 0;
  1597.           }
  1598.  
  1599.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1600.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1601.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1602.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1603.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1604.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1605.           console.groupEnd();
  1606.  
  1607.         }
  1608.  
  1609.         for (const h of hostL1) {
  1610.  
  1611.           if (kptPF === null) kn();
  1612.           if (ENABLE_BASE_PREFETCHING) {
  1613.             // if (kptPF & 1) {
  1614.             //   linker(link, 'dns-prefetch', h);
  1615.             //   link = null;
  1616.             // }
  1617.             if (kptPF & 2) {
  1618.               // linker(link, 'preconnect', h);
  1619.               link = null;
  1620.             }
  1621.           }
  1622.         }
  1623.  
  1624.         for (const h of hostL2) {
  1625.           if (kptPF === null) kn();
  1626.           if (ENABLE_BASE_PREFETCHING) {
  1627.             if (kptPF & 1) {
  1628.               linker(link, 'dns-prefetch', h);
  1629.               link = null;
  1630.             }
  1631.           }
  1632.         }
  1633.  
  1634.       })
  1635.  
  1636.  
  1637.     }
  1638.  
  1639.     if (flagsFnOnInterval) flagsFnOnInterval(setInterval, clearInterval);
  1640.  
  1641.     if (DO_LINK_PREFETCH) basePrefetching();
  1642.  
  1643.     const { notifyPath7081 } = (() => {
  1644.       // DO_PARTICIPANT_LIST_HACKS
  1645.  
  1646.       const mutexParticipants = new Mutex();
  1647.  
  1648.       let uvid = 0;
  1649.       let r95dm = 0;
  1650.       let c95dm = -1;
  1651.  
  1652.       const foundMap = (base, content) => {
  1653.         /*
  1654.           let lastSearch = 0;
  1655.           let founds = base.map(baseEntry => {
  1656.             let search = content.indexOf(baseEntry, lastSearch);
  1657.             if (search < 0) return false;
  1658.             lastSearch = search + 1;
  1659.             return true;
  1660.           });
  1661.           return founds;
  1662.         */
  1663.         const contentSet = new Set(content);
  1664.         return base.map(baseEntry => contentSet.has(baseEntry));
  1665.  
  1666.       }
  1667.  
  1668.  
  1669.  
  1670.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1671.  
  1672.         const handler1 = {
  1673.           get(target, prop, receiver) {
  1674.             if (prop === 'object') {
  1675.               return participants; // avoid memory leakage
  1676.             }
  1677.             if (prop === 'type') {
  1678.               return 'splice';
  1679.             }
  1680.             return target[prop];
  1681.           }
  1682.         };
  1683.         const releaser = () => {
  1684.           participants = null;
  1685.         }
  1686.  
  1687.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1688.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1689.  
  1690.         let indexSplices = [];
  1691.         let contentUpdates = [];
  1692.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1693.           if (beforeParticipants[i] === participants[j]) {
  1694.             i++; j++;
  1695.           } else if (idsBefore[i] === idsAfter[j]) {
  1696.             // content changed
  1697.             contentUpdates.push({ indexI: i, indexJ: j })
  1698.             i++; j++;
  1699.           } else {
  1700.             let addedCount = 0;
  1701.             for (let q = j; q < foundsForAfter.length; q++) {
  1702.               if (foundsForAfter[q] === false) addedCount++;
  1703.               else break;
  1704.             }
  1705.             let removedCount = 0;
  1706.             for (let q = i; q < foundsForBefore.length; q++) {
  1707.               if (foundsForBefore[q] === false) removedCount++;
  1708.               else break;
  1709.             }
  1710.             if (!addedCount && !removedCount) {
  1711.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1712.             }
  1713.             indexSplices.push(new Proxy({
  1714.               index: j,
  1715.               addedCount: addedCount,
  1716.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1717.             }, handler1));
  1718.             i += removedCount;
  1719.             j += addedCount;
  1720.           }
  1721.         }
  1722.         foundsForBefore = null;
  1723.         foundsForAfter = null;
  1724.         idsBefore = null;
  1725.         idsAfter = null;
  1726.         beforeParticipants = null;
  1727.         return { indexSplices, contentUpdates, releaser };
  1728.  
  1729.       }
  1730.  
  1731.       /*
  1732.  
  1733.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1734.  
  1735.       VM63631:1 Error
  1736.       at customElements.get.notifyPath (<anonymous>:1:122)
  1737.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1738.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1739.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1740.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1741.       at ju (live_chat_polymer.js:1674:217)
  1742.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1743.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1744.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1745.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1746.  
  1747.       */
  1748.  
  1749.       function convertToIds(participants) {
  1750.         return participants.map(participant => {
  1751.           if (!participant || typeof participant !== 'object') {
  1752.             console.warn('Error(0xFA41): convertToIds', participant);
  1753.             return participant; // just in case
  1754.           }
  1755.           let keys = Object.keys(participant);
  1756.           // liveChatTextMessageRenderer
  1757.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1758.           // liveChatPaidMessageRenderer
  1759.           /*
  1760.  
  1761.             'yt-live-chat-participant-renderer' utilizes the following:
  1762.             authorName.simpleText: string
  1763.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1764.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1765.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1766.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1767.  
  1768.           */
  1769.           if (keys.length !== 1) {
  1770.             console.warn('Error(0xFA42): convertToIds', participant);
  1771.             return participant; // just in case
  1772.           }
  1773.           let key = keys[0];
  1774.           let renderer = (participant[key] || 0);
  1775.           let authorName = (renderer.authorName || 0);
  1776.           let text = `${authorName.simpleText || authorName.text}`
  1777.           let res = participant; // fallback if it is not a vaild entry
  1778.           if (typeof text !== 'string') {
  1779.             console.warn('Error(0xFA53): convertToIds', participant);
  1780.           } else {
  1781.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1782.             if (text.length > 1) res = text;
  1783.           }
  1784.           return res;
  1785.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1786.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1787.         });
  1788.       }
  1789.  
  1790.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1791.         // just update when content is changed.
  1792.         if (p1.authorName !== p2.authorName) return true;
  1793.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1794.         if (p1.authorBadges !== p2.authorBadges) return true;
  1795.         return false;
  1796.       } : (p1, p2) => {
  1797.         // keep integrity all the time.
  1798.         return p1 !== p2; // always true
  1799.       }
  1800.  
  1801.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1802.  
  1803.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1804.           if (path !== "participantsManager.participants") {
  1805.             return this.__notifyPath5036__.apply(this, arguments);
  1806.           }
  1807.           if (c95dm === r95dm) return;
  1808.         } else {
  1809.           const stack = new Error().stack;
  1810.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1811.             return this.__notifyPath5036__.apply(this, arguments);
  1812.           }
  1813.         }
  1814.  
  1815.         if (uvid > 1e8) uvid = uvid % 100;
  1816.         let tid = ++uvid;
  1817.  
  1818.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  1819.         mutexParticipants.lockWith(lockResolve => {
  1820.  
  1821.           const participants00 = cnt.participantsManager.participants;
  1822.  
  1823.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1824.             lockResolve();
  1825.             return;
  1826.           }
  1827.  
  1828.           let doUpdate = false;
  1829.  
  1830.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1831.  
  1832.             if (!participants00.r94dm) {
  1833.               participants00.r94dm = 1;
  1834.               if (++r95dm > 1e9) r95dm = 9;
  1835.               participants00.push = function () {
  1836.                 if (++r95dm > 1e9) r95dm = 9;
  1837.                 return Array.prototype.push.apply(this, arguments);
  1838.               }
  1839.               participants00.pop = function () {
  1840.                 if (++r95dm > 1e9) r95dm = 9;
  1841.                 return Array.prototype.pop.apply(this, arguments);
  1842.               }
  1843.               participants00.shift = function () {
  1844.                 if (++r95dm > 1e9) r95dm = 9;
  1845.                 return Array.prototype.shift.apply(this, arguments);
  1846.               }
  1847.               participants00.unshift = function () {
  1848.                 if (++r95dm > 1e9) r95dm = 9;
  1849.                 return Array.prototype.unshift.apply(this, arguments);
  1850.               }
  1851.               participants00.splice = function () {
  1852.                 if (++r95dm > 1e9) r95dm = 9;
  1853.                 return Array.prototype.splice.apply(this, arguments);
  1854.               }
  1855.               participants00.sort = function () {
  1856.                 if (++r95dm > 1e9) r95dm = 9;
  1857.                 return Array.prototype.sort.apply(this, arguments);
  1858.               }
  1859.               participants00.reverse = function () {
  1860.                 if (++r95dm > 1e9) r95dm = 9;
  1861.                 return Array.prototype.reverse.apply(this, arguments);
  1862.               }
  1863.             }
  1864.  
  1865.             if (c95dm !== r95dm) {
  1866.               c95dm = r95dm;
  1867.               doUpdate = true;
  1868.             }
  1869.  
  1870.           } else {
  1871.             doUpdate = true;
  1872.           }
  1873.  
  1874.           if (!doUpdate) {
  1875.             lockResolve();
  1876.             return;
  1877.           }
  1878.  
  1879.           const participants = participants00.slice(0);
  1880.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  1881.           beforeParticipantsMap.set(cnt, participants);
  1882.  
  1883.           const resPromise = (async () => {
  1884.  
  1885.             if (beforeParticipants.length === 0) {
  1886.               // not error
  1887.               return 0;
  1888.             }
  1889.  
  1890.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  1891.  
  1892.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  1893.             if (beforeParticipants.length !== countOfElements) {
  1894.               // there is somewrong for the cache. - sometimes happen
  1895.               return 0;
  1896.             }
  1897.  
  1898.             const idsBefore = convertToIds(beforeParticipants);
  1899.             const idsAfter = convertToIds(participants);
  1900.  
  1901.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  1902.  
  1903.             let res = 1; // default 1 for no update
  1904.  
  1905.             if (indexSplices.length >= 1) {
  1906.  
  1907.  
  1908.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  1909.               // let p1 = indexSplices[0].removed;
  1910.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  1911.  
  1912.               /* folllow
  1913.                   a.notifyPath(c + ".splices", d);
  1914.                   a.notifyPath(c + ".length", b.length);
  1915.               */
  1916.               // stampDomArraySplices_
  1917.  
  1918.  
  1919.               await new Promise(resolve => {
  1920.                 cnt.resolveForDOMRendering781 = resolve;
  1921.  
  1922.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  1923.                   indexSplices
  1924.                 });
  1925.                 indexSplices = null;
  1926.                 releaser();
  1927.                 releaser = null;
  1928.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  1929.                   participants.length
  1930.                 );
  1931.  
  1932.               });
  1933.  
  1934.               await Promise.resolve(0); // play safe for the change of 'length'
  1935.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  1936.  
  1937.               let wrongSize = participants.length !== countOfElements
  1938.               if (wrongSize) {
  1939.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  1940.                 return 0;
  1941.               }
  1942.  
  1943.               res = 2 | 4;
  1944.  
  1945.             } else {
  1946.  
  1947.               indexSplices = null;
  1948.               releaser();
  1949.               releaser = null;
  1950.  
  1951.               if (participants.length !== countOfElements) {
  1952.                 // other unhandled cases
  1953.                 return 0;
  1954.               }
  1955.  
  1956.             }
  1957.  
  1958.             // participants.length === countOfElements before contentUpdates
  1959.             if (contentUpdates.length >= 1) {
  1960.               for (const contentUpdate of contentUpdates) {
  1961.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  1962.                 if (isChanged) {
  1963.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  1964.                   res |= 4 | 8;
  1965.                 }
  1966.               }
  1967.             }
  1968.             contentUpdates = null;
  1969.  
  1970.             return res;
  1971.  
  1972.  
  1973.           })();
  1974.  
  1975.  
  1976.           resPromise.then(resValue => {
  1977.  
  1978.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  1979.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  1980.             if (resValue === 0) {
  1981.               new Promise(resolve => {
  1982.                 cnt.resolveForDOMRendering781 = resolve;
  1983.                 isLogRequired && console.log("Full Refresh begins");
  1984.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  1985.               }).then(() => {
  1986.                 isLogRequired && console.log("Full Refresh ends");
  1987.                 console.groupEnd();
  1988.               }).then(lockResolve);
  1989.               return;
  1990.             }
  1991.  
  1992.             const delayLockResolve = (resValue & 4) === 4;
  1993.  
  1994.             if (delayLockResolve) {
  1995.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  1996.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  1997.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  1998.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  1999.               isLogRequired && console.groupEnd();
  2000.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2001.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2002.               requestAnimationFrame(lockResolve);
  2003.             } else {
  2004.               lockResolve();
  2005.             }
  2006.  
  2007.           });
  2008.  
  2009.         });
  2010.  
  2011.       }
  2012.  
  2013.       return { notifyPath7081 };
  2014.  
  2015.     })();
  2016.  
  2017.     const whenDefinedMultiple = async (tags) => {
  2018.  
  2019.       const sTags = [...new Set(tags)];
  2020.       const len = sTags.length;
  2021.  
  2022.       const pTags = new Array(len);
  2023.       for (let i = 0; i < len; i++) {
  2024.         pTags[i] = customElements.whenDefined(sTags[i]);
  2025.       }
  2026.  
  2027.       await Promise.all(pTags);
  2028.       pTags.length = 0;
  2029.  
  2030.       return sTags;
  2031.  
  2032.     }
  2033.  
  2034.     const onRegistryReadyForDataManipulation = () => {
  2035.  
  2036.       function dummy5035(a, b, c) { }
  2037.       function dummy411(a, b, c) { }
  2038.  
  2039.  
  2040.  
  2041.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2042.  
  2043.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2044.  
  2045.         const tag = "yt-live-chat-participant-list-renderer";
  2046.         const cProto = getProto(document.createElement(tag));
  2047.         if (!cProto || typeof cProto.attached !== 'function') {
  2048.           // for _registered, proto.attached shall exist when the element is defined.
  2049.           // for controller extraction, attached shall exist when instance creates.
  2050.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2051.           return;
  2052.         }
  2053.  
  2054.  
  2055.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2056.  
  2057.         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'];
  2058.         const fgs = {};
  2059.         for (const key of fgsArr) fgs[key] = undefined;
  2060.  
  2061.         try {
  2062.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2063.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2064.         } catch (e) { }
  2065.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2066.  
  2067.         const canDoReplacement = (() => {
  2068.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2069.             console.warn('YouTube Live Chat Tamer is running.');
  2070.             return;
  2071.           }
  2072.  
  2073.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2074.             console.warn('YouTube Live Chat Tamer is running.');
  2075.             return;
  2076.           }
  2077.  
  2078.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2079.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2080.  
  2081.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2082.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2083.             return;
  2084.           }
  2085.  
  2086.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2087.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2088.             return;
  2089.           }
  2090.  
  2091.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2092.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2093.             return;
  2094.           }
  2095.           return true;
  2096.         })();
  2097.  
  2098.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2099.  
  2100.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2101.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2102.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2103.           const s = fiRSCB.split('.');
  2104.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2105.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2106.           } else {
  2107.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2108.           }
  2109.         } else {
  2110.           console.log("flushRenderStamperComponentBindings_ - not found");
  2111.         }
  2112.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2113.  
  2114.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2115.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2116.           cProto.flushRenderStamperComponentBindings_ = function () {
  2117.             // console.log('flushRenderStamperComponentBindings_')
  2118.             this.flushRenderStamperComponentBindings66_();
  2119.             if (this.resolveForDOMRendering781) {
  2120.               this.resolveForDOMRendering781();
  2121.               this.resolveForDOMRendering781 = null;
  2122.             }
  2123.           };
  2124.         }
  2125.  
  2126.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2127.           const container = ((this || 0).$ || 0).participants;
  2128.           if (!container) return 0;
  2129.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2130.         }
  2131.  
  2132.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2133.  
  2134.         cProto.__attached412__ = cProto.attached;
  2135.         const fpPList = function (hostElement) {
  2136.           const cnt = hostElement.inst || hostElement;
  2137.           if (beforeParticipantsMap.has(cnt)) return;
  2138.           hostElement.classList.add('n9fJ3');
  2139.  
  2140.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2141.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2142.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2143.             return;
  2144.           }
  2145.  
  2146.           groupCollapsed("Participant List attached", "");
  2147.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2148.           //   console.log(123, 'appendChild');
  2149.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2150.           // }
  2151.  
  2152.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2153.           //   console.log(123, 'insertBefore');
  2154.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2155.           // }
  2156.  
  2157.           cnt.__notifyPath5036__ = cnt.notifyPath
  2158.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2159.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2160.           console.log(`initial number of participants: ${participants.length}`);
  2161.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2162.           beforeParticipantsMap.set(cnt, newParticipants);
  2163.           cnt.notifyPath = notifyPath7081;
  2164.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2165.           console.groupEnd();
  2166.         }
  2167.         cProto.attached = function () {
  2168.           fpPList(this.hostElement || this);
  2169.           this.__attached412__.apply(this, arguments);
  2170.         };
  2171.  
  2172.  
  2173.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2174.  
  2175.           /** @type {boolean | (()=>boolean)} */
  2176.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2177.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2178.  
  2179.             let lastMessageDate = 0;
  2180.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2181.  
  2182.             cProto.stampDomArray_ = function (...args) {
  2183.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2184.                 if (typeof toUseMaintainStableList === 'function') {
  2185.                   toUseMaintainStableList = toUseMaintainStableList();
  2186.                 }
  2187.                 args[5] = toUseMaintainStableList;
  2188.                 let currentDate = Date.now();
  2189.                 if (currentDate - lastMessageDate > 440) {
  2190.                   lastMessageDate = currentDate;
  2191.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2192.                 }
  2193.               }
  2194.               return this.stampDomArray66_.apply(this, args);
  2195.             }
  2196.  
  2197.             cProto.stampDomArray_.nIegT = 1;
  2198.  
  2199.           }
  2200.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2201.         } else {
  2202.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2203.         }
  2204.  
  2205.         console.groupEnd();
  2206.  
  2207.         if (onPageElements.length >= 1) {
  2208.           for (const s of onPageElements) {
  2209.             if ((s.inst || s).isAttached === true) {
  2210.               fpPList(s);
  2211.             }
  2212.           }
  2213.         }
  2214.  
  2215.       }).catch(console.warn);
  2216.  
  2217.     };
  2218.  
  2219.     if (DO_PARTICIPANT_LIST_HACKS) {
  2220.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2221.     }
  2222.  
  2223.  
  2224.  
  2225.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2226.  
  2227.  
  2228.  
  2229.  
  2230.     const bnForDelayChatOccurrence = () => {
  2231.  
  2232.       document.addEventListener('animationstart', (evt) => {
  2233.  
  2234.         if (evt.animationName === 'dontRenderAnimation') {
  2235.           evt.target.classList.remove('dont-render');
  2236.           if (scrollChatFn) scrollChatFn();
  2237.         }
  2238.  
  2239.       }, true);
  2240.  
  2241.       const f = (elm) => {
  2242.         if (elm && elm.nodeType === 1) {
  2243.           if (!skipDontRender && allowDontRender === true) {
  2244.             // innerTextFixFn();
  2245.             elm.classList.add('dont-render');
  2246.           }
  2247.         }
  2248.       }
  2249.  
  2250.       Node.prototype.__appendChild931__ = function (a) {
  2251.         a = dr(a);
  2252.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2253.           if (a && a.nodeType === 1) f(a);
  2254.           else if (a instanceof DocumentFragment) {
  2255.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2256.               f(n);
  2257.             }
  2258.           }
  2259.         }
  2260.       }
  2261.  
  2262.       Node.prototype.__appendChild932__ = function () {
  2263.         this.__appendChild931__.apply(this, arguments);
  2264.         return Node.prototype.appendChild.apply(this, arguments);
  2265.       }
  2266.  
  2267.  
  2268.     };
  2269.  
  2270.     const watchUserCSS = () => {
  2271.  
  2272.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2273.  
  2274.       const getElemFromWR = (nr) => {
  2275.         const n = kRef(nr);
  2276.         if (n && n.isConnected) return n;
  2277.         return null;
  2278.       }
  2279.  
  2280.       const clearContentVisibilitySizing = () => {
  2281.         Promise.resolve().then(() => {
  2282.  
  2283.           const e = document.querySelector('#show-more[disabled]');
  2284.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2285.  
  2286.           let lastVisibleItemWR = null;
  2287.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2288.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2289.             elm.setAttribute('wSr93', '');
  2290.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2291.           }
  2292.           requestAnimationFrame(() => {
  2293.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2294.             if (btnShowMore) btnShowMore.click();
  2295.             else {
  2296.               // would not work if switch it frequently
  2297.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2298.               if (lastVisibleItem) {
  2299.  
  2300.                 Promise.resolve()
  2301.                   .then(() => lastVisibleItem.scrollIntoView())
  2302.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2303.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2304.                   .catch(e => { }) // break the chain when method not callable
  2305.  
  2306.               }
  2307.             }
  2308.           });
  2309.  
  2310.         });
  2311.  
  2312.       }
  2313.  
  2314.       const mutObserver = new MutationObserver((mutations) => {
  2315.         for (const mutation of mutations) {
  2316.           if ((mutation.addedNodes || 0).length >= 1) {
  2317.             for (const addedNode of mutation.addedNodes) {
  2318.               if (addedNode.nodeName === 'STYLE') {
  2319.                 clearContentVisibilitySizing();
  2320.                 return;
  2321.               }
  2322.             }
  2323.           }
  2324.           if ((mutation.removedNodes || 0).length >= 1) {
  2325.             for (const removedNode of mutation.removedNodes) {
  2326.               if (removedNode.nodeName === 'STYLE') {
  2327.                 clearContentVisibilitySizing();
  2328.                 return;
  2329.               }
  2330.             }
  2331.           }
  2332.         }
  2333.       });
  2334.  
  2335.       mutObserver.observe(document.documentElement, {
  2336.         childList: true,
  2337.         subtree: false
  2338.       });
  2339.       mutObserver.observe(document.head, {
  2340.         childList: true,
  2341.         subtree: false
  2342.       });
  2343.       mutObserver.observe(document.body, {
  2344.         childList: true,
  2345.         subtree: false
  2346.       });
  2347.  
  2348.     }
  2349.  
  2350.  
  2351.     class WillChangeController {
  2352.       constructor(itemScroller, willChangeValue) {
  2353.         this.element = itemScroller;
  2354.         this.counter = 0;
  2355.         this.active = false;
  2356.         this.willChangeValue = willChangeValue;
  2357.       }
  2358.  
  2359.       beforeOper() {
  2360.         if (!this.active) {
  2361.           this.active = true;
  2362.           this.element.style.willChange = this.willChangeValue;
  2363.         }
  2364.         this.counter++;
  2365.       }
  2366.  
  2367.       afterOper() {
  2368.         const c = this.counter;
  2369.         requestAnimationFrame(() => {
  2370.           if (c === this.counter) {
  2371.             this.active = false;
  2372.             this.element.style.willChange = '';
  2373.           }
  2374.         });
  2375.       }
  2376.  
  2377.       release() {
  2378.         const element = this.element;
  2379.         this.element = null;
  2380.         this.counter = 1e16;
  2381.         this.active = false;
  2382.         try {
  2383.           element.style.willChange = '';
  2384.         } catch (e) { }
  2385.       }
  2386.  
  2387.     }
  2388.  
  2389.  
  2390.     const skzData = (skz) => skz.data = {
  2391.       "message": {
  2392.         "runs": [
  2393.           {
  2394.             "text": "em2o"
  2395.           },
  2396.           {
  2397.             "emoji": {
  2398.               "emojiId": "cm35z",
  2399.               "shortcuts": [
  2400.                 ":_s:",
  2401.                 ":s:"
  2402.               ],
  2403.               "searchTerms": [
  2404.                 "_s",
  2405.                 "s"
  2406.               ],
  2407.               "image": {
  2408.                 "thumbnails": [
  2409.                   {
  2410.                     "url": dummyImgURL,
  2411.                     "width": 48,
  2412.                     "height": 48
  2413.                   }
  2414.                 ],
  2415.                 "accessibility": {
  2416.                   "accessibilityData": {
  2417.                     "label": "s"
  2418.                   }
  2419.                 }
  2420.               },
  2421.               "isCustomEmoji": true
  2422.             }
  2423.           },
  2424.           {
  2425.             "text": "ji"
  2426.           }
  2427.         ]
  2428.       },
  2429.       "authorName": {
  2430.         "simpleText": "N"
  2431.       },
  2432.       "authorPhoto": {
  2433.         "thumbnails": [
  2434.           {
  2435.             "url": dummyImgURL,
  2436.             "width": 64,
  2437.             "height": 64
  2438.           }
  2439.         ]
  2440.       },
  2441.       "contextMenuEndpoint": {
  2442.         "commandMetadata": {
  2443.           "webCommandMetadata": {
  2444.             "ignoreNavigation": true
  2445.           }
  2446.         },
  2447.         "liveChatItemContextMenuEndpoint": {
  2448.           "params": "123=="
  2449.         }
  2450.       },
  2451.       "id": "sk35z",
  2452.       "timestampUsec": "1232302352350000",
  2453.       "authorBadges": [
  2454.         {
  2455.           "liveChatAuthorBadgeRenderer": {
  2456.             "customThumbnail": {
  2457.               "thumbnails": [
  2458.                 {
  2459.                   "url": dummyImgURL,
  2460.                   "width": 16,
  2461.                   "height": 16
  2462.                 },
  2463.                 {
  2464.                   "url": dummyImgURL,
  2465.                   "width": 32,
  2466.                   "height": 32
  2467.                 }
  2468.               ]
  2469.             },
  2470.             "tooltip": "T",
  2471.             "accessibility": {
  2472.               "accessibilityData": {
  2473.                 "label": "E"
  2474.               }
  2475.             }
  2476.           }
  2477.         }
  2478.       ],
  2479.       "authorExternalChannelId": "A",
  2480.       "contextMenuAccessibility": {
  2481.         "accessibilityData": {
  2482.           "label": "E"
  2483.         }
  2484.       },
  2485.       "timestampText": {
  2486.         "simpleText": "0:43"
  2487.       }
  2488.     };
  2489.  
  2490.  
  2491.  
  2492.     const { lcRendererElm, visObserver } = (() => {
  2493.  
  2494.  
  2495.  
  2496.       let lcRendererWR = null;
  2497.  
  2498.       const lcRendererElm = () => {
  2499.         let lcRenderer = kRef(lcRendererWR);
  2500.         if (!lcRenderer || !lcRenderer.isConnected) {
  2501.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2502.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2503.         }
  2504.         return lcRenderer;
  2505.       };
  2506.  
  2507.  
  2508.       let hasFirstShowMore = false;
  2509.  
  2510.       const visObserverFn = (entry) => {
  2511.  
  2512.         const target = entry.target;
  2513.         if (!target) return;
  2514.         // if(target.classList.contains('dont-render')) return;
  2515.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2516.         // const h = entry.boundingClientRect.height;
  2517.         /*
  2518.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2519.             // e.g. under fullscreen. the element created but not rendered.
  2520.             target.setAttribute('wSr93', '');
  2521.             return;
  2522.         }
  2523.         */
  2524.         if (isVisible) {
  2525.           // target.style.setProperty('--wsr94', h + 'px');
  2526.           target.setAttribute('wSr93', 'visible');
  2527.           if (nNextElem(target) === null) {
  2528.  
  2529.             // firstVisibleItemDetected = true;
  2530.             /*
  2531.               if (dateNow() - lastScroll < 80) {
  2532.                   lastLShow = 0;
  2533.                   lastScroll = 0;
  2534.                   Promise.resolve().then(clickShowMore);
  2535.               } else {
  2536.                   lastLShow = dateNow();
  2537.               }
  2538.               */
  2539.             // lastLShow = dateNow();
  2540.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2541.             // implement inside visObserver to ensure there is sufficient delay
  2542.             hasFirstShowMore = true;
  2543.             requestAnimationFrame(() => {
  2544.               // foreground page
  2545.               // page visibly ready -> load the latest comments at initial loading
  2546.               const lcRenderer = lcRendererElm();
  2547.               if (lcRenderer) {
  2548.                 (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2549.               }
  2550.             });
  2551.           }
  2552.         }
  2553.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2554.  
  2555.           // target.style.setProperty('--wsr94', h + 'px');
  2556.           target.setAttribute('wSr93', 'hidden');
  2557.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2558.  
  2559.       }
  2560.  
  2561.  
  2562.  
  2563.       const visObserver = new IntersectionObserver((entries) => {
  2564.  
  2565.         for (const entry of entries) {
  2566.  
  2567.           Promise.resolve(entry).then(visObserverFn);
  2568.  
  2569.         }
  2570.  
  2571.       }, {
  2572.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2573.         rootMargin: "0px",
  2574.         threshold: [0.05, 0.95],
  2575.       });
  2576.  
  2577.  
  2578.       return { lcRendererElm, visObserver }
  2579.  
  2580.  
  2581.     })();
  2582.  
  2583.     const { setupMutObserver } = (() => {
  2584.  
  2585.       const mutFn = (items) => {
  2586.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2587.           if (node.hasAttribute('wSr93')) break;
  2588.           node.setAttribute('wSr93', '');
  2589.           visObserver.observe(node);
  2590.         }
  2591.       }
  2592.  
  2593.       const mutObserver = new MutationObserver((mutations) => {
  2594.         const items = (mutations[0] || 0).target;
  2595.         if (!items) return;
  2596.         if (sk35zResolveFn) {
  2597.           sk35zResolveFn();
  2598.           sk35zResolveFn = null;
  2599.         }
  2600.         mutFn(items);
  2601.       });
  2602.  
  2603.       const setupMutObserver = (m2) => {
  2604.         scrollChatFn = null;
  2605.         mutObserver.disconnect();
  2606.         mutObserver.takeRecords();
  2607.         if (m2) {
  2608.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2609.           if (typeof m2.__appendChild932__ === 'function') {
  2610.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2611.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2612.           }
  2613.           mutObserver.observe(m2, {
  2614.             childList: true,
  2615.             subtree: false
  2616.           });
  2617.           mutFn(m2);
  2618.  
  2619.           const isFirstList = firstList;
  2620.           firstList = false;
  2621.  
  2622.           if (ENABLE_OVERFLOW_ANCHOR) {
  2623.  
  2624.             let items = m2;
  2625.             let addedAnchor = false;
  2626.             if (items) {
  2627.               if (items.nextElementSibling === null) {
  2628.                 items.classList.add('no-anchor');
  2629.                 addedAnchor = true;
  2630.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2631.               }
  2632.             }
  2633.  
  2634.  
  2635.  
  2636.             if (addedAnchor) {
  2637.               nodeParent(m2).classList.add('no-anchor'); // required
  2638.             }
  2639.  
  2640.           }
  2641.  
  2642.           // let div = document.createElement('div');
  2643.           // div.id = 'qwcc';
  2644.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2645.           // bufferRegion =div;
  2646.  
  2647.           // buffObserver.takeRecords();
  2648.           // buffObserver.disconnect();
  2649.           // buffObserver.observe(div,  {
  2650.           //     childList: true,
  2651.           //     subtree: false
  2652.           // })
  2653.  
  2654.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2655.  
  2656.             promiseForCustomYtElementsReady.then(() => {
  2657.  
  2658.               customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2659.  
  2660.  
  2661.  
  2662.  
  2663.                 setTimeout(() => {
  2664.  
  2665.                   /** @type {HTMLTemplateElement} */
  2666.                   let skz = document.createElement('yt-live-chat-text-message-renderer');
  2667.  
  2668.                   let cz1 = null;
  2669.  
  2670.                   if (skz && 'data' in skz && 'attached' in skz) {
  2671.  
  2672.                     const deferredZy1 = new Promise(resolve => {
  2673.  
  2674.                       skz.attached = function () {
  2675.                         cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2676.                         resolve(skz.textContent);
  2677.                       }
  2678.                       skz.detached = function () {
  2679.  
  2680.                       }
  2681.  
  2682.                     });
  2683.                     skz.id = 'sk35z';
  2684.                     skzData(skz);
  2685.  
  2686.  
  2687.                     sk35zResolveFn = null;
  2688.                     const deferredMutation = new Promise(resolve => {
  2689.                       sk35zResolveFn = resolve;
  2690.                       HTMLElement.prototype.appendChild.call(m2, skz);
  2691.                     });
  2692.  
  2693.                     Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2694.                       const [zy1, _] = res;
  2695.                       function fn() {
  2696.                         const zy2 = skz.textContent;
  2697.                         const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2698.                         if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2699.                           allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2700.                         }
  2701.                         if (allowDontRender === false) {
  2702.  
  2703.                           console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2704.                             "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2705.                             "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2706.                           );
  2707.  
  2708.                           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');
  2709.  
  2710.                           console.groupEnd();
  2711.                         } else if (allowDontRender === true) {
  2712.                           return true;
  2713.                         }
  2714.                       }
  2715.                       await new Promise(r => setTimeout(r, 1));
  2716.                       if (fn()) {
  2717.                         await new Promise(r => requestAnimationFrame(r));
  2718.                         if (fn()) {
  2719.                           skz.remove();
  2720.                           skz.textContent = '';
  2721.                           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2722.                         }
  2723.                       }
  2724.                     });
  2725.  
  2726.                   }
  2727.  
  2728.                 }, 1);
  2729.  
  2730.               }).catch(console.warn);
  2731.  
  2732.             })
  2733.  
  2734.           }
  2735.  
  2736.  
  2737.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2738.  
  2739.             (() => {
  2740.  
  2741.               const tag = 'yt-iframed-player-events-relay'
  2742.               const dummy = document.createElement(tag);
  2743.  
  2744.               const cProto = getProto(dummy);
  2745.               if (!cProto || !cProto.handlePostMessage_) {
  2746.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2747.                 return;
  2748.               }
  2749.  
  2750.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2751.  
  2752.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2753.  
  2754.                 cProto.handlePostMessage_ = function (a) {
  2755.  
  2756.                   const da = (a || 0).data || 0;
  2757.                   if (typeof da === 'object') {
  2758.  
  2759.                     // console.log('handlePostMessage_', da)
  2760.                     const qc = da['yt-player-state-change'];
  2761.                     if (qc === 2) { playerState = 2 }
  2762.                     else if (qc === 3) { playerState = 3 }
  2763.                     else if (qc === 1) { playerState = 1 }
  2764.                     return this.handlePostMessage66_(a);
  2765.  
  2766.                   }
  2767.  
  2768.  
  2769.                 }
  2770.  
  2771.               }
  2772.  
  2773.  
  2774.             })();
  2775.  
  2776.           }
  2777.  
  2778.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  2779.             setTimeout(() => {
  2780.               if (!hasTimerModified) return;
  2781.               const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  2782.               if (!tickerRenderer) return;
  2783.  
  2784.               const items = (tickerRenderer.$ || 0).items || 0;
  2785.               if (!items) return;
  2786.               const template = document.createElement('template');
  2787.               template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  2788.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  2789.                 dimmed="" [dummy777]>
  2790.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  2791.                   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));">
  2792.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  2793.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  2794.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  2795.                       style="background-color: transparent;" loaded=""><img id="img"
  2796.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  2797.                         src="${dummyImgURL}"></yt-img-shadow777>
  2798.  
  2799.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  2800.                   </div>
  2801.                 </div>
  2802.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  2803.               const dummy777 = template.content.firstElementChild;
  2804.               items.appendChild(dummy777);
  2805.               Promise.resolve(dummy777).then((dummy777) => {
  2806.                 let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  2807.                 if (container.isConnected === true) {
  2808.  
  2809.                   const evaluated = `${getComputedStyle(container).background}`;
  2810.  
  2811.                   container = null;
  2812.                   dummy777.remove();
  2813.                   dummy777.textContent = '';
  2814.                   dummy777 = null;
  2815.  
  2816.                   if (evaluated.indexOf('0.') < 4) {
  2817.  
  2818.                     // not fulfilling
  2819.                     // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  2820.  
  2821.                     console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2822.                       "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2823.                       "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2824.                     );
  2825.                     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');
  2826.                     console.groupEnd();
  2827.  
  2828.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  2829.  
  2830.                   } else {
  2831.  
  2832.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2833.                   }
  2834.                 }
  2835.               });
  2836.  
  2837.             }, 800);
  2838.           }
  2839.  
  2840.         }
  2841.       }
  2842.  
  2843.       return { setupMutObserver };
  2844.  
  2845.  
  2846.  
  2847.     })();
  2848.  
  2849.     const setupEvents = () => {
  2850.  
  2851.  
  2852.       let scrollCount = 0;
  2853.  
  2854.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  2855.  
  2856.  
  2857.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  2858.  
  2859.         const lcRenderer = lcRendererElm();
  2860.         if (lcRenderer) {
  2861.           const cnt = (lcRenderer.inst || lcRenderer);
  2862.           if (!cnt.hasUserJustInteracted11_) return;
  2863.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  2864.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  2865.           }
  2866.         }
  2867.  
  2868.       }
  2869.  
  2870.       document.addEventListener('scroll', (evt) => {
  2871.         if (!evt || !evt.isTrusted) return;
  2872.         // lastScroll = dateNow();
  2873.         if (++scrollCount > 1e9) scrollCount = 9;
  2874.       }, passiveCapture); // support contain => support passive
  2875.  
  2876.       let lastScrollCount = -1;
  2877.       document.addEventListener('wheel', (evt) => {
  2878.         if (!evt || !evt.isTrusted) return;
  2879.         if (lastScrollCount === scrollCount) return;
  2880.         lastScrollCount = scrollCount;
  2881.         lastWheel = dateNow();
  2882.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2883.       }, passiveCapture); // support contain => support passive
  2884.  
  2885.       document.addEventListener('mousedown', (evt) => {
  2886.         if (!evt || !evt.isTrusted) return;
  2887.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2888.         lastMouseDown = dateNow();
  2889.         currentMouseDown = true;
  2890.         lastUserInteraction = lastMouseDown;
  2891.       }, passiveCapture);
  2892.  
  2893.       document.addEventListener('pointerdown', (evt) => {
  2894.         if (!evt || !evt.isTrusted) return;
  2895.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2896.         lastMouseDown = dateNow();
  2897.         currentMouseDown = true;
  2898.         lastUserInteraction = lastMouseDown;
  2899.       }, passiveCapture);
  2900.  
  2901.       document.addEventListener('click', (evt) => {
  2902.         if (!evt || !evt.isTrusted) return;
  2903.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2904.         lastMouseDown = lastMouseUp = dateNow();
  2905.         currentMouseDown = false;
  2906.         lastUserInteraction = lastMouseDown;
  2907.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2908.       }, passiveCapture);
  2909.  
  2910.       document.addEventListener('tap', (evt) => {
  2911.         if (!evt || !evt.isTrusted) return;
  2912.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2913.         lastMouseDown = lastMouseUp = dateNow();
  2914.         currentMouseDown = false;
  2915.         lastUserInteraction = lastMouseDown;
  2916.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2917.       }, passiveCapture);
  2918.  
  2919.  
  2920.       document.addEventListener('mouseup', (evt) => {
  2921.         if (!evt || !evt.isTrusted) return;
  2922.         if (currentMouseDown) {
  2923.           lastMouseUp = dateNow();
  2924.           currentMouseDown = false;
  2925.           lastUserInteraction = lastMouseUp;
  2926.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2927.         }
  2928.       }, passiveCapture);
  2929.  
  2930.  
  2931.       document.addEventListener('pointerup', (evt) => {
  2932.         if (!evt || !evt.isTrusted) return;
  2933.         if (currentMouseDown) {
  2934.           lastMouseUp = dateNow();
  2935.           currentMouseDown = false;
  2936.           lastUserInteraction = lastMouseUp;
  2937.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2938.         }
  2939.       }, passiveCapture);
  2940.  
  2941.       document.addEventListener('touchstart', (evt) => {
  2942.         if (!evt || !evt.isTrusted) return;
  2943.         lastTouchDown = dateNow();
  2944.         currentTouchDown = true;
  2945.         lastUserInteraction = lastTouchDown;
  2946.       }, passiveCapture);
  2947.  
  2948.       document.addEventListener('touchmove', (evt) => {
  2949.         if (!evt || !evt.isTrusted) return;
  2950.         lastTouchDown = dateNow();
  2951.         currentTouchDown = true;
  2952.         lastUserInteraction = lastTouchDown;
  2953.       }, passiveCapture);
  2954.  
  2955.       document.addEventListener('touchend', (evt) => {
  2956.         if (!evt || !evt.isTrusted) return;
  2957.         if (currentTouchDown) {
  2958.           lastTouchUp = dateNow();
  2959.           currentTouchDown = false;
  2960.           lastUserInteraction = lastTouchUp;
  2961.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2962.         }
  2963.       }, passiveCapture);
  2964.  
  2965.       document.addEventListener('touchcancel', (evt) => {
  2966.         if (!evt || !evt.isTrusted) return;
  2967.         if (currentTouchDown) {
  2968.           lastTouchUp = dateNow();
  2969.           currentTouchDown = false;
  2970.           lastUserInteraction = lastTouchUp;
  2971.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2972.         }
  2973.       }, passiveCapture);
  2974.  
  2975.  
  2976.     }
  2977.  
  2978.  
  2979.     const onRegistryReadyForDOMOperations = () => {
  2980.  
  2981.       let firstCheckedOnYtInit = false;
  2982.  
  2983.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  2984.  
  2985.       const mightFirstCheckOnYtInit = () => {
  2986.         if (firstCheckedOnYtInit) return;
  2987.         firstCheckedOnYtInit = true;
  2988.  
  2989.         if (!document.body || !document.head) return;
  2990.         if (!assertorURL()) return;
  2991.  
  2992.         addCssManaged();
  2993.  
  2994.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  2995.         if (efsContainer && efsContainer.parentNode !== document.body) {
  2996.           document.body.appendChild(efsContainer);
  2997.         }
  2998.  
  2999.       };
  3000.  
  3001.       if (!assertorURL()) return;
  3002.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3003.  
  3004.       if (document.documentElement && document.head) {
  3005.         addCssManaged();
  3006.       }
  3007.       // console.log(document.body===null)
  3008.  
  3009.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3010.  
  3011.         const tag = "yt-live-chat-item-list-renderer"
  3012.         const dummy = document.createElement(tag);
  3013.  
  3014.         const cProto = getProto(dummy);
  3015.         if (!cProto || !cProto.attached) {
  3016.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3017.           return;
  3018.         }
  3019.  
  3020.         mightFirstCheckOnYtInit();
  3021.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3022.         console.log("[Begin]");
  3023.  
  3024.         const mclp = cProto;
  3025.         try {
  3026.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3027.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3028.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3029.           assertor(() => typeof mclp.setAtBottom === 'function');
  3030.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3031.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3032.         } catch (e) { }
  3033.  
  3034.  
  3035.         try {
  3036.           assertor(() => typeof mclp.attached === 'function');
  3037.           assertor(() => typeof mclp.detached === 'function');
  3038.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3039.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3040.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3041.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3042.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3043.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3044.         } catch (e) { }
  3045.  
  3046.         mclp.__intermediate_delay__ = null;
  3047.  
  3048.         let mzk = 0;
  3049.         let myk = 0;
  3050.         let mlf = 0;
  3051.         let myw = 0;
  3052.         let mzt = 0;
  3053.         let zarr = null;
  3054.         let mlg = 0;
  3055.  
  3056.         if ((mclp.clearList || 0).length === 0) {
  3057.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3058.           mclp.clearList66 = mclp.clearList;
  3059.           mclp.clearList = function () {
  3060.             mzk++;
  3061.             myk++;
  3062.             mlf++;
  3063.             myw++;
  3064.             mzt++;
  3065.             mlg++;
  3066.             zarr = null;
  3067.             this.__intermediate_delay__ = null;
  3068.             this.clearList66();
  3069.           };
  3070.           console.log("clearList", "OK");
  3071.         } else {
  3072.           console.log("clearList", "NG");
  3073.         }
  3074.  
  3075.  
  3076.         let onListRendererAttachedDone = false;
  3077.  
  3078.         function setList(itemOffset, items) {
  3079.  
  3080.           const isFirstTime = onListRendererAttachedDone === false;
  3081.  
  3082.           if (isFirstTime) {
  3083.             onListRendererAttachedDone = true;
  3084.             Promise.resolve().then(watchUserCSS);
  3085.             addCssManaged();
  3086.             setupEvents();
  3087.           }
  3088.  
  3089.           setupStyle(itemOffset, items);
  3090.  
  3091.           setupMutObserver(items);
  3092.         }
  3093.  
  3094.         mclp.attached419 = async function () {
  3095.  
  3096.           if (!this.isAttached) return;
  3097.  
  3098.           let maxTrial = 16;
  3099.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3100.             if (--maxTrial < 0 || !this.isAttached) return;
  3101.             await new Promise(requestAnimationFrame);
  3102.           }
  3103.  
  3104.           if (this.isAttached !== true) return;
  3105.  
  3106.           if (!this.$) {
  3107.             console.warn("!this.$");
  3108.             return;
  3109.           }
  3110.           if (!this.$) return;
  3111.           /** @type {HTMLElement | null} */
  3112.           const itemScroller = this.$['item-scroller'];
  3113.           /** @type {HTMLElement | null} */
  3114.           const itemOffset = this.$['item-offset'];
  3115.           /** @type {HTMLElement | null} */
  3116.           const items = this.$['items'];
  3117.  
  3118.           if (!itemScroller || !itemOffset || !items) {
  3119.             console.warn("items.parentNode !== itemOffset");
  3120.             return;
  3121.           }
  3122.  
  3123.           if (nodeParent(items) !== itemOffset) {
  3124.  
  3125.             console.warn("items.parentNode !== itemOffset");
  3126.             return;
  3127.           }
  3128.  
  3129.  
  3130.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3131.  
  3132.             console.warn("id incorrect");
  3133.             return;
  3134.           }
  3135.  
  3136.           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')
  3137.  
  3138.           if (!isTargetItems) {
  3139.             console.warn("!isTargetItems");
  3140.             return;
  3141.           }
  3142.  
  3143.           setList(itemOffset, items);
  3144.  
  3145.         }
  3146.  
  3147.         mclp.attached331 = mclp.attached;
  3148.         mclp.attached = function () {
  3149.           this.attached419 && this.attached419();
  3150.           return this.attached331();
  3151.         }
  3152.  
  3153.         mclp.detached331 = mclp.detached;
  3154.  
  3155.         mclp.detached = function () {
  3156.           setupMutObserver();
  3157.           return this.detached331();
  3158.         }
  3159.  
  3160.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3161.         for (const t29 of t29s) {
  3162.           if ((t29.inst || t29).isAttached === true) {
  3163.             t29.attached419();
  3164.           }
  3165.         }
  3166.  
  3167.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3168.  
  3169.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3170.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3171.  
  3172.           /** @type {Map<number, any>} */
  3173.           const aMap = new Map();
  3174.           let count = 6150;
  3175.           mclp.async66 = mclp.async;
  3176.           mclp.async = function (e, f) {
  3177.             // ensure the previous operation is done
  3178.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3179.             const hasF = arguments.length === 2;
  3180.             const stack = new Error().stack;
  3181.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3182.             if (count > 1e9) count = 6159;
  3183.             const resId = ++count;
  3184.             aMap.set(resId, e);
  3185.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3186.               const rp = aMap.get(resId);
  3187.               if (typeof rp !== 'function') {
  3188.                 return;
  3189.               }
  3190.               let cancelCall = false;
  3191.               if (isFlushAsync) {
  3192.                 if (rk < 0) {
  3193.                   cancelCall = true;
  3194.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3195.                   cancelCall = true;
  3196.                 }
  3197.               }
  3198.               if (cancelCall) {
  3199.                 aMap.delete(resId);
  3200.               } else {
  3201.                 const asyncEn = function () {
  3202.                   aMap.delete(resId);
  3203.                   return rp.apply(this, arguments);
  3204.                 };
  3205.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3206.               }
  3207.             });
  3208.  
  3209.             return resId;
  3210.           }
  3211.  
  3212.           mclp.cancelAsync66 = mclp.cancelAsync;
  3213.           mclp.cancelAsync = function (resId) {
  3214.             if (resId <= 6150) {
  3215.               this.cancelAsync66(resId);
  3216.             } else if (aMap.has(resId)) {
  3217.               const rp = aMap.get(resId);
  3218.               aMap.delete(resId);
  3219.               if (typeof rp !== 'function') {
  3220.                 this.cancelAsync66(rp);
  3221.               }
  3222.             }
  3223.           }
  3224.  
  3225.           console.log("async", "OK");
  3226.         } else {
  3227.           console.log("async", "NG");
  3228.         }
  3229.  
  3230.  
  3231.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3232.  
  3233.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3234.           mclp.showNewItems66_ = mclp.showNewItems_;
  3235.  
  3236.           mclp.showNewItems77_ = async function () {
  3237.             if (myk > 1e9) myk = 9;
  3238.             let tid = ++myk;
  3239.  
  3240.             await new Promise(requestAnimationFrame);
  3241.  
  3242.             if (tid !== myk) {
  3243.               return;
  3244.             }
  3245.  
  3246.             const cnt = this;
  3247.  
  3248.             await Promise.resolve();
  3249.             cnt.showNewItems66_();
  3250.  
  3251.             await Promise.resolve();
  3252.  
  3253.           }
  3254.  
  3255.           mclp.showNewItems_ = function () {
  3256.  
  3257.             const cnt = this;
  3258.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3259.               cnt.showNewItems77_().then(() => {
  3260.                 resolve();
  3261.               });
  3262.             });
  3263.           }
  3264.  
  3265.           console.log("showNewItems_", "OK");
  3266.         } else {
  3267.           console.log("showNewItems_", "NG");
  3268.         }
  3269.  
  3270.  
  3271.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3272.  
  3273.           assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3274.  
  3275.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3276.  
  3277.           let contensWillChangeController = null;
  3278.  
  3279.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3280.  
  3281.           mclp.flushActiveItems78_ = async function (tid) {
  3282.             try {
  3283.               if (tid !== mlf) return;
  3284.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3285.               let logger = false;
  3286.               const cnt = this;
  3287.               let immd = cnt.__intermediate_delay__;
  3288.               await new Promise(requestAnimationFrame);
  3289.  
  3290.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3291.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3292.  
  3293.               mlf++;
  3294.               if (mlg > 1e9) mlg = 9;
  3295.               ++mlg;
  3296.  
  3297.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3298.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3299.               let changeMaxItemsToDisplay = false;
  3300.               const activeItemsLen = this.activeItems_.length;
  3301.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3302.                 logger = true;
  3303.  
  3304.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3305.  
  3306.                 logger && console.log('[Begin]')
  3307.  
  3308.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3309.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3310.                   console.log('reduce maxitems');
  3311.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3312.                     // as all the rendered chats are already "outdated"
  3313.                     // all old chats shall remove and reduced number of few chats will be rendered
  3314.                     // then restore to the original number
  3315.                     changeMaxItemsToDisplay = true;
  3316.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3317.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3318.                   }
  3319.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3320.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3321.  
  3322.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3323.                 } else {
  3324.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3325.  
  3326.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3327.                 }
  3328.               }
  3329.               // it is found that it will render all stacked chats after switching back from background
  3330.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3331.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3332.  
  3333.  
  3334.               const items = (cnt.$ || 0).items;
  3335.  
  3336.               if (USE_WILL_CHANGE_CONTROLLER) {
  3337.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3338.                   contensWillChangeController.release();
  3339.                   contensWillChangeController = null;
  3340.                 }
  3341.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3342.               }
  3343.               const wcController = contensWillChangeController;
  3344.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3345.               wcController && wcController.beforeOper();
  3346.               await Promise.resolve();
  3347.               const acItems = cnt.activeItems_;
  3348.               const len1 = acItems.length;
  3349.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3350.               let waitFor = [];
  3351.  
  3352.  
  3353.               /** @type {Set<string>} */
  3354.               const imageLinks = new Set();
  3355.  
  3356.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3357.                 for (const item of acItems) {
  3358.                   fixLiveChatItem(item, imageLinks);
  3359.                 }
  3360.               }
  3361.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3362.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3363.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3364.  
  3365.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3366.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3367.                 // preload performs the high priority fetching.
  3368.                 // prefetch delays the chat display if the video resoruce is demanding.
  3369.  
  3370.                 if (rel) {
  3371.  
  3372.                   imageLinks.forEach(imageLink => {
  3373.                     let d = false;
  3374.                     const isEmoji = imageLink.includes('/emoji/');
  3375.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3376.                     if (!pretechedSet.has(imageLink)) {
  3377.                       pretechedSet.add(imageLink);
  3378.                       d = true;
  3379.                     }
  3380.                     if (d) {
  3381.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3382.  
  3383.                     }
  3384.                   })
  3385.  
  3386.                 }
  3387.  
  3388.               }
  3389.  
  3390.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3391.               // console.log('ss1', Date.now())
  3392.               if (waitFor.length > 0) {
  3393.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3394.               }
  3395.               waitFor.length = 0;
  3396.               waitFor = null;
  3397.               // console.log('ss2', Date.now())
  3398.               cnt.flushActiveItems66_();
  3399.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3400.               const len2 = cnt.activeItems_.length;
  3401.               const bAsync = len1 !== len2;
  3402.               await Promise.resolve();
  3403.               if (wcController) {
  3404.                 if (bAsync) {
  3405.                   cnt.async(() => {
  3406.                     wcController.afterOper();
  3407.                   });
  3408.                 } else {
  3409.                   wcController.afterOper();
  3410.                 }
  3411.               }
  3412.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3413.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3414.  
  3415.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3416.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3417.               } else if (changeMaxItemsToDisplay) {
  3418.  
  3419.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3420.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  3421.                   reducedMaxItemsToDisplay,
  3422.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  3423.                 });
  3424.               }
  3425.               logger && console.log('[End]')
  3426.  
  3427.               logger && console.groupEnd();
  3428.  
  3429.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3430.  
  3431.  
  3432.                 const ff = () => {
  3433.  
  3434.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3435.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3436.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3437.                     cnt.scrollToBottom_();
  3438.  
  3439.                     Promise.resolve().then(() => {
  3440.  
  3441.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3442.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3443.                     });
  3444.  
  3445.  
  3446.                   }
  3447.                 }
  3448.  
  3449.                 ff();
  3450.  
  3451.  
  3452.                 Promise.resolve().then(ff);
  3453.  
  3454.                 // requestAnimationFrame(ff);
  3455.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  3456.  
  3457.                 const knt = cnt;
  3458.                 if (!scrollChatFn) {
  3459.                   const cnt = knt;
  3460.                   const f = () => {
  3461.                     const itemScroller = cnt.itemScroller;
  3462.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  3463.                     if (!cnt.atBottom) {
  3464.                       cnt.scrollToBottom_();
  3465.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  3466.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  3467.                     }
  3468.                   };
  3469.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  3470.                 }
  3471.  
  3472.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  3473.               }
  3474.  
  3475.               return 1;
  3476.  
  3477.  
  3478.             } catch (e) {
  3479.               console.warn(e);
  3480.             }
  3481.           }
  3482.  
  3483.           mclp.flushActiveItems77_ = function () {
  3484.  
  3485.             return new Promise(resResolve => {
  3486.               try {
  3487.                 const cnt = this;
  3488.                 if (mlf > 1e9) mlf = 9;
  3489.                 let tid = ++mlf;
  3490.                 const hostElement = cnt.hostElement || cnt;
  3491.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  3492.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  3493.  
  3494.                 // 4 times to maxItems to avoid frequent trimming.
  3495.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  3496.  
  3497.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3498.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  3499.                 if (cnt.canScrollToBottom_()) {
  3500.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  3501.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  3502.                     .then((asyncResult) => {
  3503.                       resResolve(asyncResult); // either undefined or 1
  3504.                       resResolve = null;
  3505.                     }).catch((e) => {
  3506.                       console.warn(e);
  3507.                       if (resResolve) resResolve();
  3508.                     });
  3509.                 } else {
  3510.                   resResolve(2);
  3511.                   resResolve = null;
  3512.                 }
  3513.               } catch (e) {
  3514.                 console.warn(e);
  3515.                 if (resResolve) resResolve();
  3516.               }
  3517.  
  3518.  
  3519.             });
  3520.  
  3521.           }
  3522.  
  3523.           mclp.flushActiveItems_ = function () {
  3524.             const cnt = this;
  3525.  
  3526.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  3527.  
  3528.             if (cnt.activeItems_.length === 0) {
  3529.               cnt.__intermediate_delay__ = null;
  3530.               return;
  3531.             }
  3532.  
  3533.             const cntData = ((cnt || 0).data || 0);
  3534.             if (cntData.maxItemsToDisplay944 === undefined) {
  3535.               cntData.maxItemsToDisplay944 = null;
  3536.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  3537.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  3538.             }
  3539.  
  3540.             // ignore previous __intermediate_delay__ and create a new one
  3541.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3542.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  3543.                 if (rt === 1) {
  3544.                   resolve(1); // success, scroll to bottom
  3545.                   if (hasMoreMessageState === 1) {
  3546.                     hasMoreMessageState = 0;
  3547.                     const showMore = (cnt.$ || 0)['show-more'];
  3548.                     if (showMore) {
  3549.                       showMore.classList.remove('has-new-messages-miuzp');
  3550.                     }
  3551.                   }
  3552.                 }
  3553.                 else if (rt === 2) {
  3554.                   resolve(2); // success, trim
  3555.                   if (hasMoreMessageState === 0) {
  3556.                     hasMoreMessageState = 1;
  3557.                     const showMore = cnt.$['show-more'];
  3558.                     if (showMore) {
  3559.                       showMore.classList.add('has-new-messages-miuzp');
  3560.                     }
  3561.                   }
  3562.                 }
  3563.                 else resolve(-1); // skip
  3564.               }).catch(e => {
  3565.                 console.warn(e);
  3566.               });
  3567.             });
  3568.  
  3569.           }
  3570.           console.log("flushActiveItems_", "OK");
  3571.         } else {
  3572.           console.log("flushActiveItems_", "NG");
  3573.         }
  3574.  
  3575.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  3576.           try {
  3577.             if (mlg > 1e9) mlg = 9;
  3578.             const tid = ++mlg;
  3579.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  3580.             const runCond = () => this.canScrollToBottom_();
  3581.             if (!keepTrialCond()) return;
  3582.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  3583.             await new Promise(r => setTimeout(r, 80));
  3584.             if (!keepTrialCond()) return;
  3585.             if (runCond()) return this.flushActiveItems_() | 1;
  3586.             await new Promise(requestAnimationFrame);
  3587.             if (runCond()) return this.flushActiveItems_() | 1;
  3588.           } catch (e) {
  3589.             console.warn(e);
  3590.           }
  3591.         }
  3592.  
  3593.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  3594.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  3595.           assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  3596.  
  3597.           const querySelector = HTMLElement.prototype.querySelector;
  3598.           const U = (element) => ({
  3599.             querySelector: (selector) => querySelector.call(element, selector)
  3600.           });
  3601.  
  3602.           let qid = 0;
  3603.           mclp.atBottomChanged_ = function (a) {
  3604.             let tid = ++qid;
  3605.             let b = this;
  3606.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  3607.               if (tid !== qid) return;
  3608.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  3609.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  3610.               this.hideShowMoreAsync_ = null,
  3611.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  3612.           }
  3613.  
  3614.           console.log("atBottomChanged_", "OK");
  3615.         } else {
  3616.           console.log("atBottomChanged_", "NG");
  3617.         }
  3618.  
  3619.         if ((mclp.onScrollItems_ || 0).length === 1) {
  3620.  
  3621.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  3622.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  3623.           mclp.onScrollItems77_ = async function (evt) {
  3624.             if (myw > 1e9) myw = 9;
  3625.             let tid = ++myw;
  3626.  
  3627.             await new Promise(requestAnimationFrame);
  3628.  
  3629.             if (tid !== myw) {
  3630.               return;
  3631.             }
  3632.  
  3633.             const cnt = this;
  3634.  
  3635.             await Promise.resolve();
  3636.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  3637.               await Promise.resolve().then(() => {
  3638.                 this.ytRendererBehavior.onScroll(evt);
  3639.               }).then(() => {
  3640.                 if (this.canScrollToBottom_()) {
  3641.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  3642.                   if (hasUserJustInteracted) {
  3643.                     // only when there is an user action
  3644.                     this.setAtBottom();
  3645.                     return 1;
  3646.                   }
  3647.                 } else {
  3648.                   // no message inserting
  3649.                   this.setAtBottom();
  3650.                   return 1;
  3651.                 }
  3652.               }).then((r) => {
  3653.  
  3654.                 if (this.activeItems_.length) {
  3655.  
  3656.                   if (this.canScrollToBottom_()) {
  3657.                     this.flushActiveItems_();
  3658.                     return 1 && r;
  3659.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  3660.                     // delayed due to user action
  3661.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  3662.                     return 0;
  3663.                   }
  3664.                 }
  3665.               }).then((r) => {
  3666.                 if (r) {
  3667.                   // ensure setAtBottom is correctly set
  3668.                   this.setAtBottom();
  3669.                 }
  3670.               });
  3671.             } else {
  3672.               cnt.onScrollItems66_(evt);
  3673.             }
  3674.  
  3675.             await Promise.resolve();
  3676.  
  3677.           }
  3678.  
  3679.           mclp.onScrollItems_ = function (evt) {
  3680.  
  3681.             const cnt = this;
  3682.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3683.               cnt.onScrollItems77_(evt).then(() => {
  3684.                 resolve();
  3685.               });
  3686.             });
  3687.           }
  3688.           console.log("onScrollItems_", "OK");
  3689.         } else {
  3690.           console.log("onScrollItems_", "NG");
  3691.         }
  3692.  
  3693.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  3694.  
  3695.           assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  3696.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  3697.  
  3698.           mclp.handleLiveChatActions77_ = async function (arr) {
  3699.             if (typeof (arr || 0).length !== 'number') {
  3700.               this.handleLiveChatActions66_(arr);
  3701.               return;
  3702.             }
  3703.             if (mzt > 1e9) mzt = 9;
  3704.             let tid = ++mzt;
  3705.  
  3706.             if (zarr === null) zarr = arr;
  3707.             else Array.prototype.push.apply(zarr, arr);
  3708.             arr = null;
  3709.  
  3710.             await new Promise(requestAnimationFrame);
  3711.  
  3712.             if (tid !== mzt || zarr === null) {
  3713.               return;
  3714.             }
  3715.  
  3716.             const carr = zarr;
  3717.             zarr = null;
  3718.  
  3719.             await Promise.resolve();
  3720.             this.handleLiveChatActions66_(carr);
  3721.             await Promise.resolve();
  3722.  
  3723.           }
  3724.  
  3725.           mclp.handleLiveChatActions_ = function (arr) {
  3726.  
  3727.             const cnt = this;
  3728.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3729.               cnt.handleLiveChatActions77_(arr).then(() => {
  3730.                 resolve();
  3731.               });
  3732.             });
  3733.           }
  3734.           console.log("handleLiveChatActions_", "OK");
  3735.         } else {
  3736.           console.log("handleLiveChatActions_", "NG");
  3737.         }
  3738.  
  3739.         mclp.hasUserJustInteracted11_ = () => {
  3740.           const t = dateNow();
  3741.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  3742.         }
  3743.  
  3744.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  3745.  
  3746.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  3747.  
  3748.           mclp.canScrollToBottom_ = function () {
  3749.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  3750.           }
  3751.  
  3752.           console.log("canScrollToBottom_", "OK");
  3753.         } else {
  3754.           console.log("canScrollToBottom_", "NG");
  3755.         }
  3756.  
  3757.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  3758.  
  3759.           mclp.isSmoothScrollEnabled_ = function () {
  3760.             return false;
  3761.           }
  3762.  
  3763.           mclp.maybeResizeScrollContainer_ = function () {
  3764.             //
  3765.           }
  3766.  
  3767.           mclp.refreshOffsetContainerHeight_ = function () {
  3768.             //
  3769.           }
  3770.  
  3771.           mclp.smoothScroll_ = function () {
  3772.             //
  3773.           }
  3774.  
  3775.           mclp.resetSmoothScroll_ = function () {
  3776.             //
  3777.           }
  3778.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  3779.         } else {
  3780.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  3781.         }
  3782.  
  3783.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3784.  
  3785.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  3786.           mclp.handleAddChatItemAction_ = function (a) {
  3787.             try {
  3788.               if (a && typeof a === 'object' && !('length' in a)) {
  3789.                 fixLiveChatItem(a.item, null);
  3790.                 console.assert(arguments[0] === a);
  3791.               }
  3792.             } catch (e) { console.warn(e) }
  3793.             return this.handleAddChatItemAction66_.apply(this, arguments);
  3794.           }
  3795.  
  3796.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3797.         } else {
  3798.  
  3799.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3800.         }
  3801.  
  3802.  
  3803.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3804.  
  3805.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  3806.           mclp.handleReplaceChatItemAction_ = function (a) {
  3807.             try {
  3808.               if (a && typeof a === 'object' && !('length' in a)) {
  3809.                 fixLiveChatItem(a.replacementItem, null);
  3810.                 console.assert(arguments[0] === a);
  3811.               }
  3812.             } catch (e) { console.warn(e) }
  3813.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  3814.           }
  3815.  
  3816.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3817.         } else {
  3818.  
  3819.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3820.         }
  3821.  
  3822.         console.log("[End]");
  3823.         console.groupEnd();
  3824.  
  3825.       }).catch(console.warn);
  3826.  
  3827.  
  3828.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  3829.  
  3830.         let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  3831.  
  3832.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  3833.  
  3834.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  3835.           let v = `${attrValue}`;
  3836.           // conside a ticker is 101px width
  3837.           // 1% = 1.01px
  3838.           // 0.2% = 0.202px
  3839.  
  3840.  
  3841.           const ratio1 = (yd.ratio * 100);
  3842.           if (ratio1 > -1) { // avoid NaN
  3843.  
  3844.             // countdownDurationMs
  3845.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  3846.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  3847.             // 150000 - 1%    <1% = 1.5s>
  3848.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  3849.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  3850.  
  3851.             // 99px * 5% = 4.95px
  3852.  
  3853.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  3854.  
  3855.  
  3856.             // 1% Duration
  3857.  
  3858.             let ratio2 = ratio1;
  3859.  
  3860.             const ydd = yd.data;
  3861.             if (ydd) {
  3862.  
  3863.               const d1 = ydd.durationSec;
  3864.               const d2 = ydd.fullDurationSec;
  3865.  
  3866.               // @ step timing [min. 0.2%]
  3867.               let numOfSteps = 500;
  3868.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  3869.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  3870.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  3871.                 else if (d2 > 100) numOfSteps = 100; // 1%
  3872.                 else if (d2 > 50) numOfSteps = 50; // 2%
  3873.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  3874.                 else numOfSteps = 20;
  3875.               }
  3876.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  3877.               if (numOfSteps < 5) numOfSteps = 5;
  3878.  
  3879.               const rd = numOfSteps / 100.0;
  3880.  
  3881.               ratio2 = Math.round(ratio2 * rd) / rd;
  3882.  
  3883.               // ratio2 = Math.round(ratio2 * 5) / 5;
  3884.               ratio2 = ratio2.toFixed(1);
  3885.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  3886.  
  3887.               if (yd.__style_last__ === v) return;
  3888.               yd.__style_last__ = v;
  3889.               // do not consider any delay here.
  3890.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  3891.  
  3892.             }
  3893.           }
  3894.  
  3895.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  3896.  
  3897.  
  3898.         } else {
  3899.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  3900.         }
  3901.  
  3902.       };
  3903.  
  3904.  
  3905.       const fpTicker = (renderer) => {
  3906.         const cnt = renderer.inst || renderer;
  3907.         assertor(() => typeof (cnt || 0).is === 'string');
  3908.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  3909.         const container = (cnt.$ || 0).container;
  3910.         if (container) {
  3911.           assertor(() => (container || 0).nodeType === 1);
  3912.           assertor(() => typeof container.setAttribute === 'function');
  3913.           container.setAttribute = tickerContainerSetAttribute;
  3914.         } else {
  3915.           console.warn(`"container" does not exist in ${cnt.is}`);
  3916.         }
  3917.       };
  3918.  
  3919.  
  3920.       const tags = [
  3921.         "yt-live-chat-ticker-paid-message-item-renderer",
  3922.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  3923.         "yt-live-chat-ticker-renderer",
  3924.         "yt-live-chat-ticker-sponsor-item-renderer"
  3925.       ];
  3926.  
  3927.  
  3928.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  3929.  
  3930.         mightFirstCheckOnYtInit();
  3931.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  3932.         console.log("[Begin]");
  3933.  
  3934.         // << if ENABLE_VIDEO_PROGRESS_STATE_FIX >>
  3935.         let isMainVideoOngoing = null;
  3936.         let mainVideoLastProgress = null;
  3937.         // << end >>
  3938.  
  3939.         let dummyValueForStyleReturn = null;
  3940.  
  3941.         const genDummyValueForStyleReturn = () => {
  3942.           let s = `--nx:82;`
  3943.           let ro = {
  3944.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  3945.             "implementsGoogStringTypedString": true
  3946.           };
  3947.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  3948.           return ro;
  3949.         }
  3950.  
  3951.         const isCSSPropertySupported = () => {
  3952.  
  3953.           // @property --ticker-rtime
  3954.  
  3955.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return;
  3956.           const documentElement = document.documentElement;
  3957.           if (!documentElement) {
  3958.             console.warn('document.documentElement is not found');
  3959.             return false;
  3960.           }
  3961.           if (`${getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  3962.             return false;
  3963.           }
  3964.           return true;
  3965.  
  3966.         };
  3967.  
  3968.  
  3969.         let windowShownAt = -1;
  3970.         const setupEventForWindowShownAt = () => {
  3971.           window.addEventListener('visibilitychange', () => {
  3972.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  3973.             else windowShownAt = 0;
  3974.           }, false);
  3975.         }
  3976.  
  3977.         const dProto = {
  3978.  
  3979.           attachedForTickerInit: function () {
  3980.  
  3981.             fpTicker(this.hostElement || this);
  3982.             return this.attached77();
  3983.  
  3984.           },
  3985.  
  3986.  
  3987.           // doAnimator
  3988.  
  3989.           _makeAnimator: function () {
  3990.             if (this._r782) return;
  3991.             // if (!this.isAttached) return;
  3992.             if (!this._runnerAE) {
  3993.               /** @type {HTMLElement | null} */
  3994.               const aElement = (this.$ || 0).container;
  3995.               if (!aElement) return console.warn("this.$.container is undefined");
  3996.               const da = this.data;
  3997.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  3998.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  3999.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  4000.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  4001.  
  4002.               // if (!this.__tickerBackgroundInitialChecked__) {
  4003.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  4004.               //   console.log('__tickerBackgroundInitialChecked__')
  4005.               //   this._checkTickerBackgroundChanged();
  4006.               // }
  4007.  
  4008.               aElement.style.setProperty('--ticker-c1', c1);
  4009.               aElement.style.setProperty('--ticker-c2', c2);
  4010.               aElement.classList.add(runTickerClassName);
  4011.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4012.               // this._aeStartV = this.countdownMs;
  4013.               // this._aeStartT = this.countdownDurationMs;
  4014.               if (!(p >= 0 && p <= 100)) {
  4015.                 console.warn('incorrect time ratio', p);
  4016.               } else {
  4017.                 /*
  4018.                 const u0 = p.toFixed(4) + '%';
  4019.                 this._runnerAE = animate.call(aElement,
  4020.                   [
  4021.                     { '--ticker-rtime': u0 },
  4022.                     { '--ticker-rtime': '0%' }
  4023.                   ]
  4024.                   ,
  4025.                   {
  4026.                     fill: "forwards",
  4027.                     duration: this.countdownMs,
  4028.                     easing: "linear"
  4029.                   }
  4030.                 );
  4031.                 */
  4032.  
  4033.                 let timingFn = 'linear';
  4034.  
  4035.                 const totalDuration = this.countdownDurationMs;
  4036.  
  4037.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4038.  
  4039.                   // @ step timing [min. 0.2%]
  4040.                   let stepInterval = 0.2; // unit: %
  4041.                   if (totalDuration > 400000) stepInterval = 0.2;
  4042.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4043.                   else if (totalDuration > 100000) stepInterval = 1;
  4044.                   else if (totalDuration > 50000) stepInterval = 2;
  4045.                   else if (totalDuration > 25000) stepInterval = 5;
  4046.                   else stepInterval = 5;
  4047.  
  4048.                   let numOfSteps = Math.round(100 / stepInterval);
  4049.  
  4050.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4051.                   if (numOfSteps < 5) numOfSteps = 5;
  4052.  
  4053.                   timingFn = `steps(${numOfSteps}, end)`;
  4054.  
  4055.                 }
  4056.  
  4057.  
  4058.                 const ae = animate.call(aElement,
  4059.                   [
  4060.                     { '--ticker-rtime': '100%' },
  4061.                     { '--ticker-rtime': '0%' }
  4062.                   ]
  4063.                   ,
  4064.                   {
  4065.                     fill: "forwards",
  4066.                     duration: totalDuration,
  4067.                     easing: timingFn
  4068.                   }
  4069.                 );
  4070.  
  4071.                 this._runnerAE = ae;
  4072.  
  4073.                 ae.onfinish = (event) => {
  4074.                   this.onfinish = null;
  4075.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4076.                     this._aeFinished(event);
  4077.                   }
  4078.                 }
  4079.  
  4080.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4081.  
  4082.                 if (bq >= 0 && bq <= totalDuration) {
  4083.  
  4084.                   if (bq > totalDuration - 1) {
  4085.                     ae.currentTime = bq;
  4086.                     // setTimeout(() => {
  4087.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4088.                     // }, 1);
  4089.                   } else {
  4090.                     ae.currentTime = bq;
  4091.                   }
  4092.                 } else {
  4093.                   console.warn('Error on setting _runnerAE.currentTime!');
  4094.                 }
  4095.  
  4096.  
  4097.                 aeConstructor = ae.constructor; // constructor is from iframe
  4098.                 return ae;
  4099.               }
  4100.             } else {
  4101.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4102.               // assume just time update
  4103.               const ae = this._runnerAE;
  4104.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4105.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4106.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4107.               if (!(p >= 0 && p <= 100)) {
  4108.                 console.warn('incorrect time ratio', p);
  4109.               } else {
  4110.                 // let u0 = p.toFixed(4) + '%'
  4111.                 /*
  4112.                 ae.effect.setKeyframes([
  4113.                   { '--ticker-rtime': u0 },
  4114.                   { '--ticker-rtime': '0%' }
  4115.                 ]);
  4116.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4117.                 */
  4118.                 // ae.currentTime = 0;
  4119.  
  4120.  
  4121.  
  4122.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4123.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4124.  
  4125.                   this._runnerAE.currentTime = bq
  4126.                 } else {
  4127.                   console.warn('Error on setting _runnerAE.currentTime!');
  4128.                 }
  4129.  
  4130.  
  4131.                 ae.play();
  4132.                 return ae;
  4133.               }
  4134.             }
  4135.           },
  4136.  
  4137.           _aeFinished: function (event) {
  4138.  
  4139.             if (this._r782) return;
  4140.  
  4141.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4142.               this._throwOut();
  4143.               return;
  4144.             }
  4145.  
  4146.             if (doAnimator) {
  4147.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4148.  
  4149.               let lc = window.performance.now();
  4150.               this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4151.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4152.               this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4153.               if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4154.  
  4155.               this.countdownMs = 0;
  4156.               this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  4157.  
  4158.               if (this.isAttached) {
  4159.                 let fastRemoved = false;
  4160.                 if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4161.                   // no animation if the video page is switched from background to foreground
  4162.                   // this.hostElement.style.display = 'none';
  4163.                   const id = (this.data || 0).id || 0;
  4164.                   if (!id) this.data = { id: 1 }
  4165.                   try {
  4166.                     this.requestRemoval();
  4167.                     fastRemoved = true;
  4168.                   } catch (e) {
  4169.  
  4170.                   }
  4171.                 }
  4172.  
  4173.                 if (!fastRemoved) {
  4174.                   "auto" === this.hostElement.style.width && this.setContainerWidth();
  4175.                   this.slideDown();
  4176.                 }
  4177.               }
  4178.  
  4179.  
  4180.             } else {
  4181.               console.warn('unexpected issue')
  4182.             }
  4183.           },
  4184.  
  4185.  
  4186.           /** @type {()} */
  4187.           _throwOut: function () {
  4188.             this._r782 = 1;
  4189.             Promise.resolve().then(() => {
  4190.               if (typeof this.requestRemoval === 'function') {
  4191.                 const id = (this.data || 0).id;
  4192.                 if (!id) this.data = { id: 1 };
  4193.                 try {
  4194.                   this.requestRemoval();
  4195.                 } catch (e) { }
  4196.               }
  4197.               this.detached();
  4198.               this.data = null;
  4199.               this.countdownMs = 0;
  4200.               this.lastCountdownTimeMs = null;
  4201.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  4202.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  4203.               if (this.__dataReady === true) this.__dataReady = false;
  4204.               const hm = this.hostElement || this;
  4205.               if (hm.parentNode) hm.remove();
  4206.               if (hm.firstChild) hm.textContent = '';
  4207.             }).catch(e => {
  4208.               console.warn(e);
  4209.             });
  4210.           },
  4211.  
  4212.  
  4213.           // doTimerFnModification
  4214.  
  4215.  
  4216.           /** @type {(a, b)} */
  4217.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4218.  
  4219.             // a.durationSec [s] => countdownMs [ms]
  4220.             // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4221.             // lastCountdownTimeMs => raf ongoing
  4222.             // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4223.  
  4224.             if (this._r782) return;
  4225.  
  4226.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4227.               this._throwOut();
  4228.               return;
  4229.             }
  4230.  
  4231.             // TimerFnModA
  4232.  
  4233.             b = void 0 === b ? 0 : b;
  4234.             if (void 0 !== a) {
  4235.               this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4236.               this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4237.               if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4238.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  4239.                 this.rafId = 1
  4240.                 if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4241.                 this.detlaSincePausedSecs = 0;
  4242.                 const ae = this._makeAnimator();
  4243.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4244.  
  4245.                 if (playerState === 2 && this.isAnimationPaused === void 0 && ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED && isMainVideoOngoing === false && mainVideoLastProgress !== null) {
  4246.  
  4247.                   // << This is mainly for [PlayBack Replay] backwards >>
  4248.                   // fix the case when the main video is paused but due to seeking the tickers are added
  4249.                   // play first then pause immediately to allow the visual effect of initial state
  4250.                   // don't forget to set the "playerProgressSec"
  4251.                   // otherwise when it resumes from paused state, the detlaSincePausedSecs will be huge
  4252.                   this.playerProgressSec = mainVideoLastProgress; // save the progress first
  4253.                   this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4254.                   this.detlaSincePausedSecs = 0;
  4255.                   this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4256.  
  4257.                 }
  4258.               }
  4259.             }
  4260.  
  4261.  
  4262.           },
  4263.  
  4264.  
  4265.  
  4266.           /** @type {(a, b)} */
  4267.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4268.  
  4269.             // a.durationSec [s] => countdownMs [ms]
  4270.             // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4271.             // lastCountdownTimeMs => raf ongoing
  4272.             // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4273.  
  4274.             if (this._r782) return;
  4275.  
  4276.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4277.               this._throwOut();
  4278.               return;
  4279.             }
  4280.  
  4281.             // TimerFnModT
  4282.  
  4283.             // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4284.             if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4285.             b = void 0 === b ? 0 : b;
  4286.             void 0 !== a && (this.countdownMs = 1E3 * a,
  4287.               this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4288.               this.ratio = 1,
  4289.               this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  4290.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4291.  
  4292.  
  4293.           },
  4294.  
  4295.  
  4296.           /** @type {(a,)} */
  4297.           updateTimeoutForTimerFnModA: function (a) {
  4298.  
  4299.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4300.  
  4301.             if (this._r782) return;
  4302.  
  4303.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4304.               this._throwOut();
  4305.               return;
  4306.             }
  4307.  
  4308.             // TimerFnModA
  4309.  
  4310.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4311.             if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4312.               this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4313.             }
  4314.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4315.             if (this.isAttached && this.countdownMs) {
  4316.               this.lastCountdownTimeMs = a
  4317.               const ae = this._makeAnimator(); // request raf
  4318.               if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4319.             } else {
  4320.               (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4321.                 this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4322.                   this.slideDown()));
  4323.             }
  4324.  
  4325.  
  4326.           },
  4327.  
  4328.           /** @type {(a,)} */
  4329.           updateTimeoutForTimerFnModT: function (a) {
  4330.  
  4331.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4332.  
  4333.             if (this._r782) return;
  4334.  
  4335.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4336.               this._throwOut();
  4337.               return;
  4338.             }
  4339.  
  4340.             // TimerFnModT
  4341.  
  4342.             // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4343.             if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4344.             if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4345.               this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4346.             }
  4347.             this.ratio = this.countdownMs / this.countdownDurationMs;
  4348.             this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4349.               this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4350.                 this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4351.                   this.slideDown()))
  4352.  
  4353.  
  4354.           },
  4355.  
  4356.           /** @type {(a,b)} */
  4357.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  4358.  
  4359.             if (this._r782) return;
  4360.  
  4361.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4362.               this._throwOut();
  4363.               return;
  4364.             }
  4365.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4366.             this._forceNoDetlaSincePausedSecs783 = 0;
  4367.  
  4368.             Promise.resolve().then(() => {
  4369.  
  4370.  
  4371.               // TimerFnModA
  4372.  
  4373.               const playState = (this._runnerAE || 0).playState;
  4374.               if (a && playState === 'running') {
  4375.  
  4376.               } else if (!a && playState !== 'running' && b) {
  4377.  
  4378.               } else {
  4379.                 return;
  4380.               }
  4381.  
  4382.               // TimerFnModA
  4383.  
  4384.  
  4385.               const pu = () => { // running -> pause
  4386.                 this._runnerAE.pause()
  4387.                 let lc = window.performance.now();
  4388.                 this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4389.                 if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4390.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4391.               };
  4392.               const wa = () => { // pause -> running
  4393.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4394.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4395.                 this.detlaSincePausedSecs = 0;
  4396.                 this.updateTimeout(a);
  4397.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  4398.               };
  4399.               a ? (this._runnerAE && pu()) : (!a && b && wa());
  4400.  
  4401.  
  4402.             }).catch(e => {
  4403.               console.log(e);
  4404.             });
  4405.  
  4406.  
  4407.  
  4408.           },
  4409.  
  4410.  
  4411.           /** @type {(a,b)} */
  4412.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  4413.  
  4414.             if (this._r782) return;
  4415.  
  4416.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4417.               this._throwOut();
  4418.               return;
  4419.             }
  4420.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4421.             this._forceNoDetlaSincePausedSecs783 = 0;
  4422.  
  4423.             Promise.resolve().then(() => {
  4424.  
  4425.               // TimerFnModT
  4426.  
  4427.               // ez++;
  4428.               // if(ez> 1e9) ez=9;
  4429.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4430.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4431.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4432.                   this.detlaSincePausedSecs = 0),
  4433.                 this.boundUpdateTimeout37_(a),
  4434.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  4435.  
  4436.  
  4437.             }).catch(e => {
  4438.               console.log(e);
  4439.             });
  4440.  
  4441.  
  4442.  
  4443.           },
  4444.  
  4445.  
  4446.           /** @type {(a,b)} */
  4447.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  4448.  
  4449.             if (this._r782) return;
  4450.  
  4451.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4452.               this._throwOut();
  4453.               return;
  4454.             }
  4455.  
  4456.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  4457.  
  4458.           },
  4459.  
  4460.  
  4461.  
  4462.           /** @type {()} */
  4463.           handlePauseReplayForPlaybackProgressState: function () {
  4464.             if (playerState !== 2) return;
  4465.             if (this.isAttached) {
  4466.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  4467.               const tid = ++this.rtk;
  4468.               getRafPromiseForTickers().then(() => {
  4469.                 if (tid === this.rtk) {
  4470.                   if (playerState === 2) {
  4471.                     this.handlePauseReplay66();
  4472.                     isMainVideoOngoing = false;
  4473.                   }
  4474.                 }
  4475.               })
  4476.             }
  4477.           },
  4478.  
  4479.           /** @type {()} */
  4480.           handleResumeReplayForPlaybackProgressState: function () {
  4481.             if (playerState === 2) return;
  4482.             if (this.isAttached) {
  4483.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  4484.               const tid = ++this.rtk;
  4485.               getRafPromiseForTickers().then(() => {
  4486.                 if (tid === this.rtk) {
  4487.                   if (playerState === 3 || playerState === 1) {
  4488.                     this.handleResumeReplay66();
  4489.                     isMainVideoOngoing = true;
  4490.                   }
  4491.                 }
  4492.               })
  4493.             }
  4494.           },
  4495.  
  4496.           /** @type {(a,)} */
  4497.           handleReplayProgressForPlaybackProgressState: function (a) {
  4498.             if (this.isAttached) {
  4499.               mainVideoLastProgress = a;
  4500.               const tid = ++this.rtk;
  4501.               getRafPromiseForTickers().then(() => {
  4502.                 if (tid === this.rtk) {
  4503.                   this.handleReplayProgress66(mainVideoLastProgress);
  4504.                 }
  4505.               })
  4506.             }
  4507.           }
  4508.  
  4509.  
  4510.         }
  4511.  
  4512.  
  4513.         for (const tag of tags) { // ##tag##
  4514.           const dummy = document.createElement(tag);
  4515.  
  4516.           const cProto = getProto(dummy);
  4517.           if (!cProto || !cProto.attached) {
  4518.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4519.             continue;
  4520.           }
  4521.  
  4522.           cProto.attached77 = cProto.attached;
  4523.  
  4524.           cProto.attached = dProto.attachedForTickerInit;
  4525.  
  4526.           let rafHackState = 0;
  4527.  
  4528.           let isTimingFunctionHackable = false;
  4529.  
  4530.           let urt = 0;
  4531.  
  4532.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  4533.  
  4534.             // console.log('startCountdown', typeof cProto.startCountdown)
  4535.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  4536.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  4537.  
  4538.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  4539.  
  4540.           } else {
  4541.             console.log(`Skip Timing Function Modification for ${tag}`);
  4542.             continue;
  4543.           }
  4544.  
  4545.  
  4546.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  4547.  
  4548.             // cancelable - this.rafId < isAnimationPausedChanged >
  4549.             rafHackState = 1;
  4550.  
  4551.             if (isTimingFunctionHackable) {
  4552.               rafHackState = 2;
  4553.  
  4554.             } else {
  4555.               rafHackState = 4;
  4556.             }
  4557.  
  4558.           }
  4559.  
  4560.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  4561.  
  4562.           const doRAFHack = rafHackState === 2;
  4563.  
  4564.           cProto._throwOut = dProto._throwOut;
  4565.  
  4566.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  4567.  
  4568.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  4569.  
  4570.  
  4571.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  4572.  
  4573.  
  4574.  
  4575.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  4576.               urt++;
  4577.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  4578.             } else {
  4579.               console.log('Error for setting cProto.handlePauseReplay', tag)
  4580.             }
  4581.  
  4582.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  4583.               urt++;
  4584.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  4585.             } else {
  4586.               console.log('Error for setting cProto.handleResumeReplay', tag)
  4587.             }
  4588.  
  4589.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  4590.               urt++;
  4591.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  4592.             } else {
  4593.               console.log('Error for setting cProto.handleReplayProgress', tag)
  4594.             }
  4595.  
  4596.  
  4597.  
  4598.           }
  4599.  
  4600.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  4601.  
  4602.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  4603.  
  4604.             cProto.rtk = 0;
  4605.  
  4606.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  4607.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  4608.  
  4609.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  4610.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  4611.  
  4612.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  4613.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  4614.  
  4615.           }
  4616.  
  4617.           const doTimerFnModification = (doRAFHack || doAnimator);
  4618.  
  4619.           if (doAnimator && windowShownAt < 0) {
  4620.             windowShownAt = 0;
  4621.             setupEventForWindowShownAt();
  4622.           }
  4623.  
  4624.           if (doTimerFnModification) {
  4625.  
  4626.             cProto.startCountdown = (
  4627.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  4628.             );
  4629.  
  4630.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4631.             cProto.updateTimeout = (
  4632.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  4633.             );
  4634.  
  4635.  
  4636.             // let ez = 0;
  4637.             cProto.isAnimationPausedChanged = (
  4638.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  4639.             );
  4640.  
  4641.           }
  4642.  
  4643.           if (doAnimator) {
  4644.  
  4645.             assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  4646.  
  4647.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  4648.  
  4649.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  4650.  
  4651.           }
  4652.  
  4653.           if (doTimerFnModification === true) hasTimerModified = true;
  4654.  
  4655.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  4656.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  4657.           }
  4658.  
  4659.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  4660.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  4661.           }
  4662.  
  4663.         }
  4664.  
  4665.         const selector = tags.join(', ');
  4666.         const elements = document.querySelectorAll(selector);
  4667.         if (elements.length >= 1) {
  4668.           for (const elm of elements) {
  4669.             if ((elm || elm.inst).isAttached === true) {
  4670.               fpTicker(elm);
  4671.             }
  4672.           }
  4673.         }
  4674.  
  4675.         console.log("[End]");
  4676.         console.groupEnd();
  4677.  
  4678.  
  4679.       }).catch(console.warn);
  4680.  
  4681.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  4682.  
  4683.         mightFirstCheckOnYtInit();
  4684.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  4685.         console.log("[Begin]");
  4686.         (() => {
  4687.  
  4688.           const tag = "yt-live-chat-ticker-renderer"
  4689.           const dummy = document.createElement(tag);
  4690.  
  4691.           const cProto = getProto(dummy);
  4692.           if (!cProto || !cProto.attached) {
  4693.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4694.             return;
  4695.           }
  4696.  
  4697.           if (RAF_FIX_keepScrollClamped) {
  4698.  
  4699.             // to be improved
  4700.  
  4701.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  4702.  
  4703.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  4704.               cProto.keepScrollClamped = function () {
  4705.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  4706.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  4707.                 this.maybeClampScroll()
  4708.               }
  4709.  
  4710.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  4711.             } else {
  4712.  
  4713.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  4714.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  4715.             }
  4716.  
  4717.           }
  4718.  
  4719.  
  4720.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.44.32' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  4721.             // to be replaced by animator
  4722.  
  4723.             cProto.startScrolling = function (a) {
  4724.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  4725.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  4726.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  4727.               this.scrollRatePixelsPerSecond = a;
  4728.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4729.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  4730.             };
  4731.  
  4732.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  4733.  
  4734.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  4735.               const b = a - (this.lastFrameTimestamp || 0);
  4736.               const rate = this.scrollRatePixelsPerSecond
  4737.               const q = b / 1E3 * (rate || 0);
  4738.  
  4739.               const sl = this.$.items.scrollLeft;
  4740.               // console.log(rate, sl, q)
  4741.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  4742.  
  4743.               } else if (q > -1e-5 && q < 1e-5) {
  4744.  
  4745.               } else {
  4746.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  4747.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  4748.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  4749.                 if (cond1 || cond2 || cond3) {
  4750.                   this.$.items.scrollLeft += q;
  4751.                   this.maybeClampScroll();
  4752.                   this.updateArrows();
  4753.                 }
  4754.               }
  4755.  
  4756.               this.lastFrameTimestamp = a;
  4757.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4758.               0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  4759.             } : function (a) {
  4760.               const b = a - (this.lastFrameTimestamp || 0);
  4761.               this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  4762.               this.maybeClampScroll();
  4763.               this.updateArrows();
  4764.               this.lastFrameTimestamp = a;
  4765.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4766.               0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  4767.             };
  4768.  
  4769.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  4770.           } else {
  4771.             assertor(() => fnIntegrity(cProto.startScrolling, '1.44.32'));
  4772.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  4773.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  4774.           }
  4775.  
  4776.  
  4777.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  4778.  
  4779.             cProto.attached37 = cProto.attached;
  4780.             cProto.detached37 = cProto.detached;
  4781.  
  4782.             let naohzId = 0;
  4783.             cProto.__naohzId__ = 0;
  4784.             cProto.attached = function () {
  4785.               Promise.resolve().then(() => {
  4786.  
  4787.                 const hostElement = this.hostElement || this;
  4788.                 if (!(hostElement instanceof HTMLElement)) return;
  4789.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  4790.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  4791.                 // or #chat-messages
  4792.                 if (!ironPage) return;
  4793.  
  4794.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4795.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  4796.                 this.__naohzId__ = ++naohzId;
  4797.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  4798.  
  4799.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4800.  
  4801.               });
  4802.               return this.attached37.apply(this, arguments);
  4803.             };
  4804.             cProto.detached = function () {
  4805.               Promise.resolve().then(() => {
  4806.  
  4807.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  4808.                 if (!ironPage) return;
  4809.  
  4810.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4811.  
  4812.               });
  4813.               return this.detached37.apply(this, arguments);
  4814.             };
  4815.  
  4816.             const clickFade = (p) => {
  4817.  
  4818.               let u = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  4819.               if (u) {
  4820.                 u.click();
  4821.               }
  4822.             };
  4823.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  4824.  
  4825.               const target = (evt || 0).target || 0;
  4826.               if (!target) return;
  4827.  
  4828.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  4829.                 const is = p.is;
  4830.                 if (typeof is === 'string' && is) {
  4831.  
  4832.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  4833.                     return;
  4834.                   }
  4835.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  4836.                     Promise.resolve(p).then(clickFade);
  4837.                     evt && evt.stopPropagation();
  4838.                     return;
  4839.                   }
  4840.                   if (is !== 'yt-live-chat-ticker-renderer') {
  4841.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  4842.                     if (!is.endsWith('-renderer')) return;
  4843.                   }
  4844.  
  4845.                 } else {
  4846.                   if ((p.nodeName || '').includes('BUTTON')) return;
  4847.                 }
  4848.  
  4849.               }
  4850.             };
  4851.  
  4852.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  4853.  
  4854.           } else {
  4855.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  4856.           }
  4857.  
  4858.  
  4859.         })();
  4860.  
  4861.         console.log("[End]");
  4862.  
  4863.         console.groupEnd();
  4864.  
  4865.       }).catch(console.warn);
  4866.  
  4867.  
  4868.       if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  4869.  
  4870.  
  4871.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  4872.  
  4873.           mightFirstCheckOnYtInit();
  4874.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  4875.           console.log("[Begin]");
  4876.           (() => {
  4877.  
  4878.             const tag = "yt-live-chat-message-input-renderer"
  4879.             const dummy = document.createElement(tag);
  4880.  
  4881.             const cProto = getProto(dummy);
  4882.             if (!cProto || !cProto.attached) {
  4883.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4884.               return;
  4885.             }
  4886.  
  4887.             let doHack = false;
  4888.             if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  4889.  
  4890.               // not cancellable
  4891.  
  4892.  
  4893.               doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  4894.  
  4895.             }
  4896.  
  4897.             if (doHack) {
  4898.  
  4899.               cProto.handleTimeout = function (a) {
  4900.                 console.log('cProto.handleTimeout', tag)
  4901.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4902.                 this.timeoutDurationMs = this.timeoutMs = a;
  4903.                 this.countdownRatio = 1;
  4904.                 0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  4905.               };
  4906.               cProto.updateTimeout = function (a) {
  4907.                 console.log('cProto.updateTimeout', tag)
  4908.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4909.                 this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  4910.                   this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  4911.                 this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  4912.                   rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  4913.               };
  4914.  
  4915.               console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  4916.             } else {
  4917.  
  4918.               console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  4919.               console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  4920.  
  4921.               console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  4922.             }
  4923.  
  4924.           })();
  4925.  
  4926.           console.log("[End]");
  4927.  
  4928.           console.groupEnd();
  4929.  
  4930.  
  4931.         })
  4932.  
  4933.  
  4934.       }
  4935.  
  4936.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  4937.  
  4938.  
  4939.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  4940.  
  4941.           mightFirstCheckOnYtInit();
  4942.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  4943.           console.log("[Begin]");
  4944.           (() => {
  4945.  
  4946.             const tag = "yt-emoji-picker-renderer"
  4947.             const dummy = document.createElement(tag);
  4948.  
  4949.             const cProto = getProto(dummy);
  4950.             if (!cProto || !cProto.attached) {
  4951.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4952.               return;
  4953.             }
  4954.  
  4955.             let doHack = false;
  4956.             if (typeof cProto.animateScroll_ === 'function') {
  4957.  
  4958.               // not cancellable
  4959.               console.log('animateScroll_', typeof cProto.animateScroll_)
  4960.  
  4961.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  4962.  
  4963.             }
  4964.  
  4965.             if (doHack) {
  4966.  
  4967.               const querySelector = HTMLElement.prototype.querySelector;
  4968.               const U = (element) => ({
  4969.                 querySelector: (selector) => querySelector.call(element, selector)
  4970.               });
  4971.  
  4972.               cProto.animateScroll_ = function (a) {
  4973.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  4974.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  4975.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  4976.                 a -= this.lastAnimationTime_;
  4977.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  4978.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  4979.                     this.animationEnd_ = this.animationStart_ = null,
  4980.                     this.lastAnimationTime_ = 0);
  4981.                 this.updateButtons_()
  4982.               }
  4983.  
  4984.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  4985.             } else {
  4986.  
  4987.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  4988.             }
  4989.  
  4990.           })();
  4991.  
  4992.           console.log("[End]");
  4993.  
  4994.           console.groupEnd();
  4995.         });
  4996.       }
  4997.  
  4998.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  4999.  
  5000.  
  5001.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  5002.  
  5003.           mightFirstCheckOnYtInit();
  5004.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  5005.           console.log("[Begin]");
  5006.           (() => {
  5007.  
  5008.             const tag = "yt-live-chat-docked-message"
  5009.             const dummy = document.createElement(tag);
  5010.  
  5011.             const cProto = getProto(dummy);
  5012.             if (!cProto || !cProto.attached) {
  5013.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5014.               return;
  5015.             }
  5016.  
  5017.             let doHack = false;
  5018.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  5019.  
  5020.               // cancelable - this.intersectRAF <detached>
  5021.               // yt-live-chat-docked-message
  5022.               // boundCheckIntersections <-> checkIntersections
  5023.               // onDockableMessagesChanged
  5024.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  5025.  
  5026.               console.log('detached', typeof cProto.detached)
  5027.               console.log('checkIntersections', typeof cProto.checkIntersections)
  5028.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  5029.  
  5030.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  5031.  
  5032.             }
  5033.  
  5034.             if (doHack) {
  5035.  
  5036.               cProto.checkIntersections = function () {
  5037.                 // console.log('cProto.checkIntersections', tag)
  5038.                 if (this.dockableMessages.length) {
  5039.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  5040.                   let a = this.dockableMessages[0]
  5041.                     , b = this.hostElement.getBoundingClientRect();
  5042.                   a = a.getBoundingClientRect();
  5043.                   let c = a.top - b.top
  5044.                     , d = 8 >= c;
  5045.                   c = 8 >= c - this.hostElement.clientHeight;
  5046.                   if (d) {
  5047.                     let e;
  5048.                     for (; d;) {
  5049.                       e = this.dockableMessages.shift();
  5050.                       d = this.dockableMessages[0];
  5051.                       if (!d)
  5052.                         break;
  5053.                       d = d.getBoundingClientRect();
  5054.                       c = d.top - b.top;
  5055.                       let f = 8 >= c;
  5056.                       if (8 >= c - a.height)
  5057.                         if (f)
  5058.                           a = d;
  5059.                         else
  5060.                           return;
  5061.                       d = f
  5062.                     }
  5063.                     this.dock(e)
  5064.                   } else
  5065.                     c && this.dockedItem && this.clear()
  5066.                 } else
  5067.                   this.intersectRAF = 0
  5068.               }
  5069.  
  5070.               cProto.onDockableMessagesChanged = function () {
  5071.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  5072.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  5073.               }
  5074.  
  5075.               cProto.detached = function () {
  5076.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  5077.               }
  5078.  
  5079.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  5080.             } else {
  5081.  
  5082.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  5083.             }
  5084.  
  5085.           })();
  5086.  
  5087.           console.log("[End]");
  5088.  
  5089.           console.groupEnd();
  5090.  
  5091.         }).catch(console.warn);
  5092.  
  5093.       }
  5094.  
  5095.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  5096.  
  5097.  
  5098.         customElements.whenDefined("yt-img-shadow").then(() => {
  5099.  
  5100.           mightFirstCheckOnYtInit();
  5101.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  5102.           console.log("[Begin]");
  5103.           (() => {
  5104.  
  5105.             const tag = "yt-img-shadow"
  5106.             const dummy = document.createElement(tag);
  5107.  
  5108.             const cProto = getProto(dummy);
  5109.             if (!cProto || !cProto.attached) {
  5110.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5111.               return;
  5112.             }
  5113.  
  5114.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  5115.  
  5116.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  5117.               cProto.thumbnailChanged_ = function (a) {
  5118.  
  5119.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  5120.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  5121.  
  5122.                 return this.thumbnailChanged66_.apply(this, arguments)
  5123.  
  5124.               }
  5125.               console.log("cProto.thumbnailChanged_ - OK");
  5126.  
  5127.             } else {
  5128.               console.log("cProto.thumbnailChanged_ - NG");
  5129.  
  5130.             }
  5131.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  5132.  
  5133.               cProto.setSrc66_ = cProto.setSrc_;
  5134.               cProto.setSrc_ = function (a) {
  5135.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  5136.                 return this.setSrc66_.apply(this, arguments)
  5137.               }
  5138.  
  5139.               console.log("cProto.setSrc_ - OK");
  5140.             } else {
  5141.  
  5142.               console.log("cProto.setSrc_ - NG");
  5143.             }
  5144.  
  5145.           })();
  5146.  
  5147.           console.log("[End]");
  5148.  
  5149.           console.groupEnd();
  5150.  
  5151.         }).catch(console.warn);
  5152.  
  5153.       }
  5154.  
  5155.       if (FIX_THUMBNAIL_DATACHANGED) {
  5156.  
  5157.  
  5158.  
  5159.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  5160.  
  5161.           mightFirstCheckOnYtInit();
  5162.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  5163.           console.log("[Begin]");
  5164.           (() => {
  5165.  
  5166.             const tag = "yt-live-chat-author-badge-renderer"
  5167.             const dummy = document.createElement(tag);
  5168.  
  5169.             const cProto = getProto(dummy);
  5170.             if (!cProto || !cProto.attached) {
  5171.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5172.               return;
  5173.             }
  5174.  
  5175.  
  5176.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  5177.  
  5178.  
  5179.  
  5180.               cProto.dataChanged86 = cProto.dataChanged;
  5181.               cProto.dataChanged = function (a) {
  5182.  
  5183.                 /*
  5184.  
  5185.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  5186.                       b.removeChild(b.firstChild);
  5187.                   if (a)
  5188.                       if (a.icon) {
  5189.                           var c = document.createElement("yt-icon");
  5190.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  5191.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  5192.                           b.appendChild(c)
  5193.                       } else if (a.customThumbnail) {
  5194.                           c = document.createElement("img");
  5195.                           var d;
  5196.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5197.                           b.appendChild(c),
  5198.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  5199.                       }
  5200.  
  5201.                 */
  5202.  
  5203.                 const image = ((this || 0).$ || 0).image
  5204.                 if (image && a && image.firstElementChild) {
  5205.                   let exisiting = image.firstElementChild;
  5206.                   if (exisiting === image.lastElementChild) {
  5207.  
  5208.  
  5209.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  5210.  
  5211.                       let c = exisiting;
  5212.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  5213.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  5214.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  5215.                       } else {
  5216.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  5217.                         if (c.icon !== p) c.icon = p;
  5218.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  5219.                       }
  5220.                       return;
  5221.  
  5222.  
  5223.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  5224.  
  5225.                       let c = exisiting;
  5226.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  5227.  
  5228.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  5229.                         return;
  5230.                       }
  5231.                       /*
  5232.  
  5233.                       var d;
  5234.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5235.  
  5236.  
  5237.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  5238.                         */
  5239.                     }
  5240.  
  5241.  
  5242.                   }
  5243.                 }
  5244.                 return this.dataChanged86.apply(this, arguments)
  5245.  
  5246.               }
  5247.               console.log("cProto.dataChanged - OK");
  5248.  
  5249.             } else {
  5250.               assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  5251.               console.log("cProto.dataChanged - NG");
  5252.  
  5253.             }
  5254.  
  5255.           })();
  5256.  
  5257.           console.log("[End]");
  5258.  
  5259.           console.groupEnd();
  5260.  
  5261.         }).catch(console.warn);
  5262.  
  5263.  
  5264.       }
  5265.  
  5266.  
  5267.       if (FIX_TOOLTIP_DISPLAY) {
  5268.  
  5269.  
  5270.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  5271.  
  5272.           mightFirstCheckOnYtInit();
  5273.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  5274.           console.log("[Begin]");
  5275.           (() => {
  5276.  
  5277.             const tag = "tp-yt-paper-tooltip"
  5278.             const dummy = document.createElement(tag);
  5279.  
  5280.             const cProto = getProto(dummy);
  5281.             if (!cProto || !cProto.attached) {
  5282.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5283.               return;
  5284.             }
  5285.  
  5286.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  5287.  
  5288.               cProto._readyClients43 = cProto._readyClients;
  5289.               cProto._readyClients = function () {
  5290.                 let r = cProto._readyClients43.apply(this, arguments);
  5291.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  5292.                 return r;
  5293.               }
  5294.  
  5295.               console.log("_readyClients - OK");
  5296.  
  5297.             } else {
  5298.               console.log("_readyClients - NG");
  5299.  
  5300.             }
  5301.  
  5302.             if (typeof cProto.show === 'function' && !cProto.show17) {
  5303.               cProto.show17 = cProto.show;
  5304.               cProto.show = function () {
  5305.  
  5306.                 let r = this.show17.apply(this, arguments);
  5307.                 this._showing === true && Promise.resolve().then(() => {
  5308.                   const tooltip = (this.$ || 0).tooltip;
  5309.  
  5310.                   if (tooltip && tooltip.firstElementChild === null) {
  5311.                     let text = tooltip.textContent;
  5312.                     if (typeof text === 'string' && text.length >= 2) {
  5313.                       tooltip.textContent = text.trim();
  5314.                     }
  5315.                   }
  5316.                 }).catch(console.warn)
  5317.                 return r;
  5318.               }
  5319.  
  5320.               console.log("trim tooltip content - OK");
  5321.  
  5322.             } else {
  5323.               console.log("trim tooltip content - NG");
  5324.  
  5325.             }
  5326.  
  5327.             /*
  5328.             cProto.updatePosition61 = cProto.updatePosition;
  5329.  
  5330.  
  5331.             cProto.updatePosition = function () {
  5332.  
  5333.  
  5334.               if (this._target && this.offsetParent) {
  5335.                 var a = this.offset;
  5336.                 14 != this.marginTop && 14 == this.offset && (a = this.marginTop);
  5337.                 var b = this.offsetParent.getBoundingClientRect()
  5338.                   , c = this._target.getBoundingClientRect()
  5339.                   , d = this.getBoundingClientRect()
  5340.                   , e = (c.width - d.width) / 2
  5341.                   , h = (c.height - d.height) / 2
  5342.                   , l = c.left - b.left
  5343.                   , m = c.top - b.top;
  5344.                 switch (this.position) {
  5345.                   case "top":
  5346.                     var p = l + e;
  5347.                     var q = m - d.height - a;
  5348.                     break;
  5349.                   case "bottom":
  5350.                     p = l + e;
  5351.                     q = m + c.height + a;
  5352.                     break;
  5353.                   case "left":
  5354.                     p = l - d.width - a;
  5355.                     q = m + h;
  5356.                     break;
  5357.                   case "right":
  5358.                     p = l + c.width + a,
  5359.                       q = m + h;
  5360.                 }
  5361.  
  5362.               if(this.ascee) {
  5363.                 this.fitToVisibleBounds = false;
  5364.               }
  5365.                 this.fitToVisibleBounds ? (b.left + p + d.width > window.innerWidth ? (this.style.right = "0px",
  5366.                   this.style.left = "auto") : (this.style.left = Math.max(0, p) + "px",
  5367.                     this.style.right = "auto"),
  5368.                   b.top + q + d.height > window.innerHeight ? (this.style.bottom = b.height + "px",
  5369.                     this.style.top = "auto") : (this.style.top = Math.max(-b.top, q) + "px",
  5370.                       this.style.bottom = "auto")) : (this.style.left = p + "px",
  5371.                         this.style.top = q + "px")
  5372.               }
  5373.             }
  5374.  
  5375.             cProto.updateStyles61 = cProto.updateStyles;
  5376.             cProto.updateStyles= function(){
  5377.               if(this.ascee) return;
  5378.               return this.updateStyles61.apply(this,arguments);
  5379.             }
  5380.             */
  5381.  
  5382.  
  5383.           })();
  5384.  
  5385.           console.log("[End]");
  5386.  
  5387.           console.groupEnd();
  5388.  
  5389.         }).catch(console.warn);
  5390.  
  5391.  
  5392.  
  5393.       }
  5394.  
  5395.  
  5396.  
  5397.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  5398.  
  5399.  
  5400.         const hookDocumentMouseDownSetupFn = () => {
  5401.  
  5402.  
  5403.  
  5404.           let muzTimestamp = 0;
  5405.           let nszDropdown = null;
  5406.  
  5407.  
  5408.  
  5409.           const handlerObject = {
  5410.  
  5411.             // mdHandler282 : function (evt) {
  5412.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5413.             //   if (!evt || !evt.isTrusted) return;
  5414.             //   muzTimestamp = 0;
  5415.             //   nszDropdown = null;
  5416.  
  5417.             //   const hostElement = this.hostElement || this;
  5418.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  5419.             //   if (!hostElement.contains(evt.target)) return;
  5420.             //   let targetDropDown = null;
  5421.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  5422.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  5423.             //       targetDropDown = dropdown;
  5424.             //     }
  5425.             //   }
  5426.             //   if ((nszDropdown = targetDropDown)) {
  5427.             //     muzTimestamp = Date.now();
  5428.             //     evt.stopImmediatePropagation();
  5429.             //     evt.stopPropagation();
  5430.             //   }
  5431.  
  5432.             // },
  5433.  
  5434.  
  5435.             muHandler282: function (evt) {
  5436.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5437.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5438.               const dropdown = nszDropdown;
  5439.               muzTimestamp = 0;
  5440.               nszDropdown = null;
  5441.  
  5442.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  5443.               const hostElement = kurMPC.hostElement || kurMPC;
  5444.               if (!hostElement.hasAttribute('menu-visible')) return;
  5445.  
  5446.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  5447.               if (chatBanner) return;
  5448.  
  5449.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  5450.  
  5451.                 /*
  5452.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5453.                 if(parentButton) return;
  5454.                 */
  5455.  
  5456.                 muzTimestamp = Date.now();
  5457.                 evt.stopImmediatePropagation();
  5458.                 evt.stopPropagation();
  5459.                 Promise.resolve(dropdown).then((dropdown) => {
  5460.                   dropdown.cancel();
  5461.                 });
  5462.                 // document.body.click();
  5463.               }
  5464.  
  5465.             },
  5466.  
  5467.             mlHandler282: function (evt) {
  5468.               muzTimestamp = 0;
  5469.               nszDropdown = null;
  5470.             },
  5471.  
  5472.             ckHandler282: function (evt) {
  5473.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5474.  
  5475.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5476.               if (Date.now() - muzTimestamp < 40) {
  5477.  
  5478.                 /*
  5479.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5480.                 if(parentButton) return;
  5481.                 */
  5482.  
  5483.                 muzTimestamp = Date.now();
  5484.                 evt.stopImmediatePropagation();
  5485.                 evt.stopPropagation();
  5486.               }
  5487.  
  5488.             },
  5489.  
  5490.             tapHandler282: function (evt) {
  5491.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5492.  
  5493.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5494.               if (Date.now() - muzTimestamp < 40) {
  5495.  
  5496.                 /*
  5497.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5498.                 if(parentButton) return;
  5499.                 */
  5500.  
  5501.                 muzTimestamp = Date.now();
  5502.                 evt.stopImmediatePropagation();
  5503.                 evt.stopPropagation();
  5504.               }
  5505.  
  5506.             },
  5507.  
  5508.  
  5509.             handleEvent(evt) {
  5510.  
  5511.  
  5512.               if (evt) {
  5513.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  5514.                 const cnt = kurMPC.inst || kurMPC;
  5515.                 const hostElement = cnt.hostElement || cnt;
  5516.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  5517.                 switch (evt.type) {
  5518.                   // case 'mousedown':
  5519.                   // return this.mdHandler282.call(kurMPC, evt);
  5520.                   case 'mouseup':
  5521.                     return this.muHandler282(evt);
  5522.                   case 'mouseleave':
  5523.                     return this.mlHandler282(evt);
  5524.                   case 'tap':
  5525.                     return this.tapHandler282(evt);
  5526.                   case 'click':
  5527.                     return this.ckHandler282(evt);
  5528.                 }
  5529.               }
  5530.  
  5531.             }
  5532.  
  5533.  
  5534.  
  5535.           }
  5536.  
  5537.           document.addEventListener('mousedown', function (evt) {
  5538.  
  5539.             if (!evt || !evt.isTrusted || !evt.target) return;
  5540.  
  5541.  
  5542.  
  5543.             muzTimestamp = 0;
  5544.             nszDropdown = null;
  5545.  
  5546.             /*
  5547.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5548.             if(parentButton){
  5549.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  5550.               if(kurMPC){
  5551.                 evt.preventDefault();
  5552.                 evt.stopImmediatePropagation();
  5553.                 evt.stopPropagation();
  5554.               }
  5555.               return;
  5556.             }
  5557.             */
  5558.  
  5559.             /** @type {HTMLElement | null} */
  5560.             const kurMP = kRef(currentMenuPivotWR);
  5561.             if (!kurMP) return;
  5562.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  5563.  
  5564.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  5565.  
  5566.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  5567.  
  5568.             const chatBanner = HTMLElement.prototype.closest.call(kurMPC, 'yt-live-chat-banner-renderer') || 0;
  5569.             if (chatBanner) return;
  5570.  
  5571.  
  5572.             let targetDropDown = null;
  5573.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  5574.               if (dropdown && dropdown.positionTarget === kurMP) {
  5575.                 targetDropDown = dropdown;
  5576.               }
  5577.             }
  5578.  
  5579.             if (!targetDropDown) return;
  5580.  
  5581.  
  5582.             /*
  5583.             if (parentButton) {
  5584.               evt.preventDefault();
  5585.               evt.stopImmediatePropagation();
  5586.               evt.stopPropagation();
  5587.               currentMenuPivotWR = mWeakRef(kurMPC);
  5588.               return;
  5589.             } 
  5590.             */
  5591.  
  5592.             if ((nszDropdown = targetDropDown)) {
  5593.               muzTimestamp = Date.now();
  5594.               evt.stopImmediatePropagation();
  5595.               evt.stopPropagation();
  5596.               currentMenuPivotWR = mWeakRef(kurMPC);
  5597.  
  5598.               const listenOpts = { capture: true, passive: false, once: true };
  5599.  
  5600.               // remove unexcecuted eventHandler
  5601.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  5602.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  5603.               document.removeEventListener('tap', handlerObject, listenOpts);
  5604.               document.removeEventListener('click', handlerObject, listenOpts);
  5605.  
  5606.               // inject one time eventHandler to by pass events
  5607.               document.addEventListener('mouseup', handlerObject, listenOpts);
  5608.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  5609.               document.addEventListener('tap', handlerObject, listenOpts);
  5610.               document.addEventListener('click', handlerObject, listenOpts);
  5611.  
  5612.             }
  5613.  
  5614.           }, true);
  5615.  
  5616.         }
  5617.  
  5618.  
  5619.         // yt-live-chat-paid-message-renderer ??
  5620.  
  5621.         /*
  5622.         
  5623.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  5624.         
  5625.         
  5626.         "yt-live-chat-ticker-paid-message-item-renderer"
  5627.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  5628.         "yt-live-chat-paid-message-renderer"
  5629.         "yt-live-chat-text-message-renderer"
  5630.         "yt-live-chat-paid-sticker-renderer"
  5631.         
  5632.         */
  5633.  
  5634.  
  5635.         whenDefinedMultiple([
  5636.  
  5637.           "yt-live-chat-paid-message-renderer",
  5638.           "yt-live-chat-membership-item-renderer",
  5639.           "yt-live-chat-paid-sticker-renderer",
  5640.           "yt-live-chat-text-message-renderer",
  5641.           "yt-live-chat-auto-mod-message-renderer",
  5642.  
  5643.           /*
  5644.           "yt-live-chat-ticker-paid-message-item-renderer",
  5645.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  5646.           "yt-live-chat-paid-message-renderer",
  5647.           "yt-live-chat-text-message-renderer",
  5648.           "yt-live-chat-paid-sticker-renderer",
  5649.  
  5650.           "yt-live-chat-ticker-sponsor-item-renderer",
  5651.           "yt-live-chat-banner-header-renderer",
  5652.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5653.           "ytd-sponsorships-live-chat-header-renderer",
  5654.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  5655.  
  5656.  
  5657.  
  5658.  
  5659.           "yt-live-chat-auto-mod-message-renderer",
  5660.           "yt-live-chat-text-message-renderer",
  5661.           "yt-live-chat-paid-message-renderer",
  5662.  
  5663.           "yt-live-chat-legacy-paid-message-renderer",
  5664.           "yt-live-chat-membership-item-renderer",
  5665.           "yt-live-chat-paid-sticker-renderer",
  5666.           "yt-live-chat-donation-announcement-renderer",
  5667.           "yt-live-chat-moderation-message-renderer",
  5668.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5669.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  5670.           "yt-live-chat-viewer-engagement-message-renderer",
  5671.  
  5672.           */
  5673.  
  5674.  
  5675.         ]).then(sTags => {
  5676.  
  5677.  
  5678.           mightFirstCheckOnYtInit();
  5679.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  5680.           console.log("[Begin]");
  5681.           let doMouseHook = false;
  5682.  
  5683.           const dProto = {
  5684.             isClickableChatRow111: function () {
  5685.               return (
  5686.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  5687.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  5688.               ); // follow .onItemTap(a)
  5689.             }
  5690.           };
  5691.  
  5692.           for (const sTag of sTags) { // ##tag##
  5693.  
  5694.  
  5695.             (() => {
  5696.  
  5697.  
  5698.  
  5699.               const tag = sTag;
  5700.               const dummy = document.createElement(tag);
  5701.  
  5702.               const cProto = getProto(dummy);
  5703.               if (!cProto || !cProto.attached) {
  5704.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  5705.                 return;
  5706.               }
  5707.  
  5708.  
  5709.               const dCnt = dummy || dummy.inst || 0;
  5710.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  5711.  
  5712.  
  5713.  
  5714.  
  5715.  
  5716.  
  5717.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  5718.  
  5719.  
  5720.  
  5721.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  5722.  
  5723.                 if (toHookDocumentMouseDown) {
  5724.                   doMouseHook = true;
  5725.                 }
  5726.  
  5727.  
  5728.  
  5729.                 console.log("shouldSupportWholeItemClick Y", tag);
  5730.  
  5731.  
  5732.               } else {
  5733.  
  5734.                 console.log("shouldSupportWholeItemClick N", tag);
  5735.               }
  5736.  
  5737.  
  5738.  
  5739.             })();
  5740.  
  5741.           }
  5742.  
  5743.  
  5744.           if (doMouseHook) {
  5745.  
  5746.             hookDocumentMouseDownSetupFn();
  5747.  
  5748.  
  5749.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  5750.           }
  5751.  
  5752.           console.log("[End]");
  5753.  
  5754.           console.groupEnd();
  5755.  
  5756.  
  5757.         }).catch(console.warn);
  5758.  
  5759.  
  5760.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  5761.  
  5762.  
  5763.       }
  5764.  
  5765.  
  5766.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  5767.  
  5768.         let rr = null;
  5769.         const p1 = new Promise(resolve => {
  5770.           rr = resolve;
  5771.         });
  5772.  
  5773.         const p1unlock = () => {
  5774.           const f = rr;
  5775.           if (f) {
  5776.             rr = null;
  5777.             f();
  5778.           }
  5779.         }
  5780.  
  5781.         return {
  5782.           p1,
  5783.           p1unlock,
  5784.           assignLock: (targetCnt, timeout) => {
  5785.             targetCnt.__showContextMenu_assign_lock__(p1);
  5786.             if (timeout) setTimeout(p1unlock, timeout);
  5787.           }
  5788.         }
  5789.  
  5790.       }
  5791.  
  5792.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  5793.  
  5794.         document.addEventListener('mousedown', function (evt) {
  5795.  
  5796.           const maxloopDOMTreeElements = 4;
  5797.           const maxloopYtCompontents = 4;
  5798.           let j1 = 0;
  5799.           let j2 = 0;
  5800.           let target = (evt || 0).target || 0;
  5801.           if (!target) return;
  5802.  
  5803.  
  5804.           while (target instanceof HTMLElement) {
  5805.             if (++j1 > maxloopDOMTreeElements) break;
  5806.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') break;
  5807.             target = nodeParent(target);
  5808.           }
  5809.           const components = [];
  5810.           while (target instanceof HTMLElement) {
  5811.             if (++j2 > maxloopYtCompontents) break;
  5812.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') {
  5813.               components.push(target);
  5814.             }
  5815.             if (typeof (target.inst || target).showContextMenu === 'function') break;
  5816.             target = target.parentComponent || (target.inst || 0).parentComponent || null;
  5817.           }
  5818.           if (!(target instanceof HTMLElement)) return;
  5819.           const targetCnt = target.inst || target;
  5820.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  5821.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  5822.             return;
  5823.           }
  5824.  
  5825.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  5826.           if (!endpoint) return;
  5827.           if (targetCnt.opened || !targetCnt.isAttached) return;
  5828.  
  5829.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  5830.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  5831.           }
  5832.  
  5833.           let doPreRequest = false;
  5834.           if (components.length >= 2 && components[0].id === 'menu-button' && (target.$ || 0)['menu-button'] === components[0]) {
  5835.             doPreRequest = true;
  5836.           } else if (components.length === 1 && components[0] === target) {
  5837.             doPreRequest = true;
  5838.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (target.$ || 0)['author-photo'] === components[0]) {
  5839.             doPreRequest = true;
  5840.           }
  5841.           if (doPreRequest === false) {
  5842.             console.log('doPreRequest = fasle on showContextMenu', components);
  5843.             return;
  5844.           }
  5845.  
  5846.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  5847.  
  5848.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  5849.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  5850.             return;
  5851.           }
  5852.  
  5853.  
  5854.           const onSuccess = (a) => {
  5855.             /*
  5856.  
  5857.               dQ() && (a = a.response);
  5858.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  5859.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  5860.  
  5861.             */
  5862.  
  5863.             a = a.response || a;
  5864.  
  5865.             if (!a) {
  5866.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  5867.               return;
  5868.             }
  5869.  
  5870.             let z = null;
  5871.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  5872.  
  5873.             if (z) {
  5874.               a = z;
  5875.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  5876.             }
  5877.  
  5878.           };
  5879.           const onFailure = (a) => {
  5880.  
  5881.             /*
  5882.  
  5883.               if (a instanceof Error || a instanceof Object || a instanceof String)
  5884.                   var b = a;
  5885.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  5886.  
  5887.             */
  5888.  
  5889.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  5890.             // console.log('onFailure', a)
  5891.  
  5892.           };
  5893.  
  5894.           if (doPreRequest) {
  5895.  
  5896.             let propertyCounter = 0;
  5897.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  5898.             const p1Timeout = 800;
  5899.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  5900.  
  5901.             try {
  5902.  
  5903.               const onSuccessHelperFn = function () {
  5904.                 pm1.p1unlock();
  5905.                 if (propertyCounter !== 5) {
  5906.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  5907.                   return;
  5908.                 }
  5909.                 if (this[proxyKey] !== targetCnt) {
  5910.                   console.log('Error in prerequest for showContextMenu.this');
  5911.                   return;
  5912.                 }
  5913.                 onSuccess(...arguments);
  5914.               };
  5915.               const onFailureHelperFn = function () {
  5916.                 pm1.p1unlock();
  5917.                 if (propertyCounter !== 5) {
  5918.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  5919.                   return;
  5920.                 }
  5921.                 if (this[proxyKey] !== targetCnt) {
  5922.                   console.log('Error in prerequest for showContextMenu.this');
  5923.                   return;
  5924.                 }
  5925.                 onFailure(...arguments);
  5926.  
  5927.               }
  5928.               const fakeTargetCnt = new Proxy({
  5929.                 __showContextMenu_forceNativeRequest__: 1,
  5930.                 __showContextMenu_sync_mode_request__: 1,
  5931.                 get handleGetContextMenuResponse_() {
  5932.                   propertyCounter += 2;
  5933.                   return onSuccessHelperFn;
  5934.                 },
  5935.                 get handleGetContextMenuError() {
  5936.                   propertyCounter += 3;
  5937.                   return onFailureHelperFn;
  5938.                 }
  5939.               }, {
  5940.                 get(_, key, receiver) {
  5941.                   if (key in _) return _[key];
  5942.                   if (key === proxyKey) return targetCnt;
  5943.  
  5944.                   let giveNative = false;
  5945.                   if (key in targetCnt) {
  5946.                     if (key === 'data') giveNative = true;
  5947.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  5948.                   }
  5949.                   if (giveNative) return targetCnt[key];
  5950.                 }
  5951.               });
  5952.  
  5953.               const fakeEvent = (() => {
  5954.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  5955.                 const nf = function () { }
  5956.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  5957.  
  5958.                 return {
  5959.                   type: 'tap',
  5960.                   eventPhase: 0,
  5961.                   isTrusted: false,
  5962.                   __composed: true,
  5963.                   bubbles, cancelable, cancelBubble, timeStamp,
  5964.                   target, srcElement, defaultPrevented, currentTarget, composed,
  5965.                   stopPropagation, stopImmediatePropagation, preventDefault
  5966.                 };
  5967.               })(evt);
  5968.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  5969.  
  5970.  
  5971.             } catch (e) {
  5972.               console.warn(e);
  5973.               propertyCounter = 7;
  5974.  
  5975.             }
  5976.             if (propertyCounter !== 5) {
  5977.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  5978.               return;
  5979.             }
  5980.  
  5981.             pm1.assignLock(targetCnt, p1Timeout);
  5982.  
  5983.           }
  5984.  
  5985.  
  5986.  
  5987.  
  5988.  
  5989.  
  5990.         }, true);
  5991.  
  5992.  
  5993.       }
  5994.  
  5995.  
  5996.  
  5997.       /*
  5998.  
  5999.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  6000.  
  6001.       */
  6002.  
  6003.       whenDefinedMultiple([
  6004.         "yt-live-chat-ticker-sponsor-item-renderer",
  6005.         "yt-live-chat-banner-header-renderer",
  6006.         "yt-live-chat-text-message-renderer",
  6007.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6008.         "ytd-sponsorships-live-chat-header-renderer",
  6009.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6010.  
  6011.         "yt-live-chat-paid-sticker-renderer",
  6012.         "yt-live-chat-viewer-engagement-message-renderer",
  6013.         "yt-live-chat-paid-message-renderer"
  6014.  
  6015.  
  6016.  
  6017.  
  6018.       ]).then(sTags => {
  6019.  
  6020.         console.log(123123, sTags)
  6021.  
  6022.         mightFirstCheckOnYtInit();
  6023.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  6024.         console.log("[Begin]");
  6025.  
  6026.  
  6027.         const __showContextMenu_mutex__ = new Mutex();
  6028.         let __showContextMenu_mutex_unlock__ = null;
  6029.         let lastShowMenuTarget = null;
  6030.  
  6031.         function deepCopy(obj, skipKeys) {
  6032.           skipKeys = skipKeys || [];
  6033.           if (!obj || typeof obj !== 'object') return obj;
  6034.           if (Array.isArray(obj)) {
  6035.             return obj.map(item => deepCopy(item, skipKeys));
  6036.           }
  6037.           const copy = {};
  6038.           for (let key in obj) {
  6039.             if (!skipKeys.includes(key)) {
  6040.               copy[key] = deepCopy(obj[key], skipKeys);
  6041.             }
  6042.           }
  6043.           return copy;
  6044.         }
  6045.  
  6046.  
  6047.  
  6048.         const wm37 = new WeakMap();
  6049.  
  6050.         const dProto = {
  6051.  
  6052.  
  6053.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  6054.  
  6055.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  6056.             if (a) {
  6057.               if (doDeepCopy) a = deepCopy(a);
  6058.               wm37.set(endpoint, a);
  6059.             } else {
  6060.               wm37.remove(endpoint);
  6061.             }
  6062.           },
  6063.           __getCachedEndpointData__: function (endpoint) {
  6064.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  6065.             if (endpoint) return wm37.get(endpoint);
  6066.             return null;
  6067.           },
  6068.           /** @type {(resolvedEndpoint: any) => void 0} */
  6069.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  6070.  
  6071.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  6072.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  6073.             Promise.resolve(resolvedEndpoint).then(() => {
  6074.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  6075.               this.showContextMenu_(resolvedEndpoint);
  6076.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  6077.             });
  6078.  
  6079.  
  6080.           },
  6081.  
  6082.  
  6083.  
  6084.           showContextMenuForCacheReopen: function (a) {
  6085.             if (!this.__showContextMenu_forceNativeRequest__) {
  6086.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6087.               if (endpoint) {
  6088.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  6089.                 if (resolvedEndpoint) {
  6090.                   this.__showCachedContextMenu__(resolvedEndpoint);
  6091.                   a && a.stopPropagation()
  6092.                   return;
  6093.                 }
  6094.               }
  6095.             }
  6096.             return this.showContextMenu37(a);
  6097.           },
  6098.  
  6099.           showContextMenuForCacheReopen_: function (a) {
  6100.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  6101.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6102.               if (endpoint) {
  6103.                 const f = this.__cacheResolvedEndpointData__;
  6104.                 if (typeof f === 'function') f(endpoint, a, true);
  6105.               }
  6106.             }
  6107.             return this.showContextMenu37_(a);
  6108.           },
  6109.  
  6110.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  6111.  
  6112.           showContextMenuWithDisableScroll: function (a) {
  6113.  
  6114.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6115.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  6116.  
  6117.               const parentComponent = this.parentComponent;
  6118.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  6119.                 parentComponent.allowScroll = false;
  6120.               }
  6121.             }
  6122.  
  6123.             return this.showContextMenu48.apply(this, arguments);
  6124.  
  6125.           },
  6126.  
  6127.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  6128.  
  6129.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  6130.             return __showContextMenu_mutex_unlock__ === null;
  6131.           },
  6132.  
  6133.           __showContextMenu_assign_lock__: function (p) {
  6134.  
  6135.             const mutex = __showContextMenu_mutex__;
  6136.  
  6137.             mutex.lockWith(unlock => {
  6138.               p.then(unlock);
  6139.             });
  6140.  
  6141.           },
  6142.  
  6143.           showContextMenuWithMutex: function (a) {
  6144.             lastShowMenuTarget = this;
  6145.  
  6146.             if (this.__showContextMenu_sync_mode_request__) {
  6147.  
  6148.               return this.showContextMenu47(a);
  6149.             } else {
  6150.  
  6151.               const mutex = __showContextMenu_mutex__;
  6152.  
  6153.               mutex.lockWith(unlock => {
  6154.                 if (lastShowMenuTarget !== this) {
  6155.                   unlock();
  6156.                   return;
  6157.                 }
  6158.  
  6159.                 setTimeout(unlock, 800); // in case network failure
  6160.                 __showContextMenu_mutex_unlock__ = unlock;
  6161.                 try {
  6162.                   this.showContextMenu47(a);
  6163.                 } catch (e) {
  6164.                   console.warn(e);
  6165.                   unlock(); // in case function script error
  6166.                 }
  6167.  
  6168.               });
  6169.  
  6170.             }
  6171.  
  6172.  
  6173.           },
  6174.  
  6175.           showContextMenuWithMutex_: function (a) {
  6176.  
  6177.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  6178.               __showContextMenu_mutex_unlock__();
  6179.               __showContextMenu_mutex_unlock__ = null;
  6180.             }
  6181.             return this.showContextMenu47_(a);
  6182.  
  6183.           }
  6184.  
  6185.         }
  6186.  
  6187.         for (const tag of sTags) { // ##tag##
  6188.  
  6189.  
  6190.  
  6191.           (() => {
  6192.  
  6193.             const dummy = document.createElement(tag);
  6194.  
  6195.             const cProto = getProto(dummy);
  6196.             if (!cProto || !cProto.attached) {
  6197.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6198.               return;
  6199.             }
  6200.  
  6201.  
  6202.  
  6203.  
  6204.             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) {
  6205.  
  6206.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  6207.               cProto.showContextMenu37 = cProto.showContextMenu;
  6208.  
  6209.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  6210.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  6211.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  6212.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  6213.  
  6214.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  6215.  
  6216.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  6217.  
  6218.  
  6219.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  6220.  
  6221.  
  6222.  
  6223.             } else {
  6224.  
  6225.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  6226.  
  6227.             }
  6228.  
  6229.  
  6230.  
  6231.             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) {
  6232.  
  6233.  
  6234.               cProto.showContextMenu48 = cProto.showContextMenu;
  6235.  
  6236.  
  6237.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  6238.  
  6239.  
  6240.  
  6241.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6242.  
  6243.  
  6244.  
  6245.             } else {
  6246.  
  6247.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  6248.  
  6249.             }
  6250.  
  6251.  
  6252.  
  6253.  
  6254.  
  6255.             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) {
  6256.  
  6257.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  6258.               cProto.showContextMenu47 = cProto.showContextMenu;
  6259.  
  6260.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  6261.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  6262.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  6263.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  6264.  
  6265.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6266.  
  6267.  
  6268.  
  6269.             } else {
  6270.  
  6271.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  6272.  
  6273.             }
  6274.  
  6275.  
  6276.  
  6277.  
  6278.           })();
  6279.  
  6280.         }
  6281.  
  6282.  
  6283.  
  6284.         console.log("[End]");
  6285.  
  6286.         console.groupEnd();
  6287.  
  6288.       }).catch(console.warn);
  6289.  
  6290.  
  6291.  
  6292.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  6293.  
  6294.         mightFirstCheckOnYtInit();
  6295.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  6296.         console.log("[Begin]");
  6297.         (() => {
  6298.  
  6299.           const tag = "tp-yt-iron-dropdown";
  6300.           const dummy = document.createElement(tag);
  6301.  
  6302.           const cProto = getProto(dummy);
  6303.           if (!cProto || !cProto.attached) {
  6304.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6305.             return;
  6306.           }
  6307.  
  6308.  
  6309.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  6310.             cProto.__deraf_hn__ = function (sId, fn) {
  6311.               const rhKey = `_rafHandler_${sId}`;
  6312.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  6313.               if (m.has(fn)) return m.get(fn);
  6314.               const resFn = () => {
  6315.                 this.__rafs[sId] = null;
  6316.                 fn.call(this)
  6317.               };
  6318.               m.set(fn, resFn);
  6319.               m.set(resFn, resFn);
  6320.               return resFn;
  6321.             };
  6322.             cProto.__deraf34 = cProto.__deraf;
  6323.             cProto.__deraf = function (a, b) { // sId, fn
  6324.               let c = this.__rafs;
  6325.               null !== c[a] && cancelAnimationFrame(c[a]);
  6326.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  6327.             };
  6328.             console.log("USE_VANILLA_DEREF - OK");
  6329.           } else {
  6330.             console.log("USE_VANILLA_DEREF - NG");
  6331.           }
  6332.  
  6333.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  6334.             cProto.__deraf66 = cProto.__deraf;
  6335.             cProto.__deraf = function (sId, fn) {
  6336.               if (this.__byPassRAF__) {
  6337.                 Promise.resolve().then(() => {
  6338.                   fn.call(this);
  6339.                 });
  6340.               }
  6341.               let r = this.__deraf66.apply(this, arguments);
  6342.               return r;
  6343.             }
  6344.             console.log("FIX_DROPDOWN_DERAF - OK");
  6345.           } else {
  6346.             console.log("FIX_DROPDOWN_DERAF - NG");
  6347.           }
  6348.  
  6349.  
  6350.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  6351.  
  6352.             let lastClose = null;
  6353.             let lastOpen = null;
  6354.             let cid = 0;
  6355.  
  6356.             cProto.__mtChanged__ = function (b) {
  6357.  
  6358.               Promise.resolve().then(() => {
  6359.                 this._applyFocus();
  6360.               }).then(() => {
  6361.                 b ? this._renderOpened() : this._renderClosed();
  6362.               }).catch(console.warn);
  6363.  
  6364.             };
  6365.  
  6366.             const __moChanged__ = () => {
  6367.               if (!cid) return;
  6368.               // console.log(553, !!lastOpen, !!lastClose);
  6369.               cid = 0;
  6370.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  6371.                 lastOpen.__mtChanged__(1)
  6372.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  6373.                 lastClose.__mtChanged__(0);
  6374.               }
  6375.               lastOpen = null;
  6376.               lastClose = null;
  6377.             };
  6378.  
  6379.  
  6380.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  6381.               cProto._openedChanged66 = cProto._openedChanged;
  6382.               cProto._openedChanged = function () {
  6383.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  6384.                 this.__byPassRAF__ = true;
  6385.                 let r = this._openedChanged66.apply(this, arguments);
  6386.                 this.__byPassRAF__ = false;
  6387.                 return r;
  6388.               }
  6389.             }
  6390.  
  6391.             const pSetGet = (key, pdThis, pdBase) => {
  6392.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  6393.               return {
  6394.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  6395.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  6396.               };
  6397.             };
  6398.  
  6399.             cProto.__modifiedMenuPropsFn__ = function () {
  6400.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  6401.               const pdBase = Object.getOwnPropertyDescriptors(this)
  6402.  
  6403.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  6404.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  6405.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  6406.  
  6407.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  6408.                 console.warn('there is setter/getter for autoFitOnAttach');
  6409.                 return;
  6410.               }
  6411.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  6412.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  6413.                 return;
  6414.               }
  6415.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  6416.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  6417.                 return;
  6418.               }
  6419.  
  6420.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  6421.  
  6422.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  6423.  
  6424.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  6425.  
  6426.               Object.defineProperties(this, {
  6427.                 autoFitOnAttach: {
  6428.                   get() {
  6429.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6430.                     return autoFitOnAttach;
  6431.                   },
  6432.                   set(nv) {
  6433.                     autoFitOnAttach = nv;
  6434.                     return true;
  6435.                   },
  6436.                   enumerable: true,
  6437.                   configurable: true
  6438.                 }, expandSizingTargetForScrollbars: {
  6439.                   get() {
  6440.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6441.                     return expandSizingTargetForScrollbars;
  6442.                   },
  6443.                   set(nv) {
  6444.                     expandSizingTargetForScrollbars = nv;
  6445.                     return true;
  6446.                   },
  6447.                   enumerable: true,
  6448.                   configurable: true
  6449.                 }, allowOutsideScroll: {
  6450.                   get() {
  6451.                     if (this._modifiedMenuPropOn062__) return true;
  6452.                     return allowOutsideScroll;
  6453.                   },
  6454.                   set(nv) {
  6455.                     allowOutsideScroll = nv;
  6456.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  6457.                     return true;
  6458.                   },
  6459.                   enumerable: true,
  6460.                   configurable: true
  6461.                 }
  6462.               })
  6463.             };
  6464.  
  6465.             /*
  6466.                // ***** position() to be changed. *****
  6467.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  6468.  
  6469.                   overflow: visible !important;
  6470.                   min-width: max-content !important;
  6471.                   max-width: max-content !important;
  6472.                   max-height: max-content !important;
  6473.                   min-height: max-content !important;
  6474.                   white-space: nowrap;
  6475.               }
  6476.  
  6477.             */
  6478.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  6479.  
  6480.               let m34 = 0;
  6481.               cProto.__refitByPosition__ = function () {
  6482.                 m34++;
  6483.                 if (m34 <= 0) m34 = 0;
  6484.                 if (m34 !== 1) return;
  6485.                 const hostElement = this.hostElement || this;
  6486.                 if (document.visibilityState === 'visible') {
  6487.                   const sizingTarget = this.sizingTarget;
  6488.                   if (!sizingTarget) {
  6489.                     m34 = 0;
  6490.                     return;
  6491.                   }
  6492.  
  6493.                   /*
  6494.                   let useVisibilityCollapse = true;
  6495.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  6496.                     useVisibilityCollapse = false;
  6497.                   }
  6498.  
  6499.                   if (useVisibilityCollapse) {
  6500.                     hostElement.style.visibility = 'collapse';
  6501.                     sizingTarget.style.visibility = 'collapse';
  6502.                   } else {
  6503.                     hostElement.setAttribute('rNgzQ', '');
  6504.                     sizingTarget.setAttribute('rNgzQ', '');
  6505.                   }
  6506.                   */
  6507.                   hostElement.setAttribute('rNgzQ', '');
  6508.                   sizingTarget.setAttribute('rNgzQ', '');
  6509.  
  6510.                   const gn = () => {
  6511.                     /*
  6512.                     if (useVisibilityCollapse) {
  6513.                       hostElement.style.visibility = '';
  6514.                       sizingTarget.style.visibility = '';
  6515.                     } else {
  6516.                       hostElement.removeAttribute('rNgzQ');
  6517.                       sizingTarget.removeAttribute('rNgzQ');
  6518.                     }
  6519.                     */
  6520.                     hostElement.removeAttribute('rNgzQ');
  6521.                     sizingTarget.removeAttribute('rNgzQ');
  6522.                   }
  6523.  
  6524.                   const an = async () => {
  6525.                     while (m34 >= 1) {
  6526.                       await renderReadyPn(sizingTarget);
  6527.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  6528.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  6529.                       }
  6530.                       m34--;
  6531.                     }
  6532.                     m34 = 0;
  6533.                     Promise.resolve().then(gn);
  6534.                   }
  6535.                   setTimeout(an, 4); // wait those resizing function calls
  6536.  
  6537.  
  6538.                 } else {
  6539.                   m34 = 0;
  6540.                 }
  6541.               }
  6542.               cProto.position34 = cProto.position
  6543.               cProto.position = function () {
  6544.                 if (this._positionInitialize_) {
  6545.                   this._positionInitialize_ = 0;
  6546.                   this.__refitByPosition__();
  6547.                 }
  6548.                 let r = cProto.position34.apply(this, arguments);
  6549.                 return r;
  6550.               }
  6551.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  6552.  
  6553.             } else {
  6554.  
  6555.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  6556.  
  6557.             }
  6558.  
  6559.  
  6560.  
  6561.             cProto.__openedChanged = function () {
  6562.               this._positionInitialize_ = 1;
  6563.               // this.removeAttribute('horizontal-align')
  6564.               // this.removeAttribute('vertical-align')
  6565.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  6566.                 this.__menuTypeCheck__ = true;
  6567.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  6568.                   this._modifiedMenuPropOn062__ = false;
  6569.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6570.                   // this.autoFitOnAttach = true;
  6571.                   // this.expandSizingTargetForScrollbars = true;
  6572.                   // this.allowOutsideScroll = true;
  6573.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  6574.                   this.__modifiedMenuPropsFn__();
  6575.                   // this.constrain= function(){}
  6576.                   // this.position= function(){}
  6577.  
  6578.                   // this.autoFitOnAttach = true;
  6579.                   // this.expandSizingTargetForScrollbars = true;
  6580.                   // this.allowOutsideScroll = true;
  6581.                 }
  6582.               }
  6583.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  6584.                 let newValue = null;
  6585.                 const positionTarget = this.positionTarget;
  6586.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  6587.                   if (this._modifiedMenuPropOn062__ === false) {
  6588.                     newValue = true;
  6589.                   }
  6590.                 } else if (this._modifiedMenuPropOn062__ === true) {
  6591.                   newValue = false;
  6592.                 }
  6593.                 if (newValue !== null) {
  6594.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  6595.                   this._modifiedMenuPropOn062__ = newValue;
  6596.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  6597.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  6598.                 }
  6599.               }
  6600.  
  6601.               if (this.opened) {
  6602.  
  6603.                 Promise.resolve().then(() => {
  6604.  
  6605.                   this._prepareRenderOpened();
  6606.                 }).then(() => {
  6607.                   this._manager.addOverlay(this);
  6608.                   if (this._manager._overlays.length === 1) {
  6609.                     lastOpen = this;
  6610.                     lastClose = null;
  6611.                   } else {
  6612.                     return 1;
  6613.                   }
  6614.                   // if (cid) {
  6615.                   //   clearTimeout(cid);
  6616.                   //   cid = -1;
  6617.                   //   this.__moChanged__();
  6618.                   //   cid = 0;
  6619.                   // } else {
  6620.                   //   cid = -1;
  6621.                   //   this.__moChanged__();
  6622.                   //   cid = 0;
  6623.                   // }
  6624.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6625.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6626.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6627.                   cid = cid || requestAnimationFrame(__moChanged__);
  6628.                 }).then((r) => {
  6629.  
  6630.                   if (r) this.__mtChanged__(1);
  6631.                 }).catch(console.warn);
  6632.  
  6633.               } else {
  6634.                 Promise.resolve().then(() => {
  6635.                   this._manager.removeOverlay(this);
  6636.                   if (this._manager._overlays.length === 0) {
  6637.                     lastClose = this;
  6638.                     lastOpen = null;
  6639.                   } else {
  6640.                     return 1;
  6641.                   }
  6642.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6643.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6644.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6645.                   cid = cid || requestAnimationFrame(__moChanged__);
  6646.                 }).then((r) => {
  6647.                   if (r) this.__mtChanged__(0);
  6648.                 }).catch(console.warn);
  6649.  
  6650.               }
  6651.  
  6652.             }
  6653.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  6654.  
  6655.           } else {
  6656.  
  6657.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  6658.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  6659.  
  6660.           }
  6661.  
  6662.  
  6663.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  6664.  
  6665.             cProto.__openedChanged82 = cProto.__openedChanged;
  6666.  
  6667.  
  6668.             cProto.__openedChanged = function () {
  6669.  
  6670.               // currentMenuPivotWR = null;
  6671.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  6672.  
  6673.  
  6674.  
  6675.               // if (this.opened && this.positionTarget) {
  6676.  
  6677.               //   const positionTarget = this.positionTarget;
  6678.               //   console.log(1480, '__openedChanged.B', positionTarget)
  6679.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  6680.  
  6681.               // }
  6682.  
  6683.               const positionTarget = this.positionTarget;
  6684.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  6685.               return this.__openedChanged82.apply(this, arguments);
  6686.             }
  6687.           }
  6688.  
  6689.  
  6690.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  6691.  
  6692.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  6693.  
  6694.           //   cProto.__onCaptureScroll = function(a){
  6695.  
  6696.           //     const q = true;
  6697.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  6698.  
  6699.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  6700.           //       async function af() {
  6701.           //         this.__isAnimating && this._finishRenderOpened();
  6702.           //         if (!this.opened) return;
  6703.           //         this.__restoreScrollPosition();
  6704.           //         await new Promise(r => requestAnimationFrame(r));
  6705.           //         if (!this.opened) return;
  6706.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6707.           //         if (!this.opened) return;
  6708.           //         this.__restoreScrollPosition();
  6709.           //         await new Promise(r => requestAnimationFrame(r));
  6710.           //         if (!this.opened) return;
  6711.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6712.           //         if (!this.opened) return;
  6713.           //         this.opened && !this.__isAnimating && this.refit();
  6714.           //       }
  6715.           //       Promise.resolve().then(af);
  6716.  
  6717.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  6718.           //     }else{
  6719.  
  6720.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  6721.  
  6722.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  6723.           //     }
  6724.           //   }
  6725.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  6726.           // }else{
  6727.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  6728.  
  6729.           // }
  6730.  
  6731.  
  6732.         })();
  6733.  
  6734.         console.log("[End]");
  6735.  
  6736.         console.groupEnd();
  6737.  
  6738.       }).catch(console.warn);
  6739.  
  6740.  
  6741.  
  6742.  
  6743.  
  6744.  
  6745.  
  6746.  
  6747.       /*
  6748.  
  6749.  
  6750.  
  6751.  
  6752.  
  6753.           var FU = function() {
  6754.               var a = this;
  6755.               this.nextHandle_ = 1;
  6756.               this.clients_ = {};
  6757.               this.JSC$10323_callbacks_ = {};
  6758.               this.unsubscribeAsyncHandles_ = {};
  6759.               this.subscribe = vl(function(b, c, d) {
  6760.                   var e = Geb(b);
  6761.                   if (e in a.clients_)
  6762.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  6763.                   else {
  6764.                       a: {
  6765.                           var h = Geb(b), l;
  6766.                           for (l in a.unsubscribeAsyncHandles_) {
  6767.                               var m = a.clients_[l];
  6768.                               if (m instanceof KO) {
  6769.                                   delete a.clients_[l];
  6770.                                   delete a.JSC$10323_callbacks_[l];
  6771.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  6772.                                   delete a.unsubscribeAsyncHandles_[l];
  6773.                                   i6a(m);
  6774.                                   m.objectId_ = new FQa(h);
  6775.                                   m.register();
  6776.                                   d = m;
  6777.                                   break a
  6778.                               }
  6779.                           }
  6780.                           d.objectSource = b.invalidationId.objectSource;
  6781.                           d.objectId = h;
  6782.                           if (b = b.webAuthConfigurationData)
  6783.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  6784.                               b.pageId && (d.pageId = b.pageId);
  6785.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  6786.                           d.register()
  6787.                       }
  6788.                       a.clients_[e] = d;
  6789.                       a.JSC$10323_callbacks_[e] = {}
  6790.                   }
  6791.                   d = a.nextHandle_++;
  6792.                   a.JSC$10323_callbacks_[e][d] = c;
  6793.                   return d
  6794.               })
  6795.           };
  6796.           FU.prototype.unsubscribe = function(a, b) {
  6797.               var c = Geb(a);
  6798.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  6799.               !this.JSC$10323_callbacks_[c].length)) {
  6800.                   var d = this.clients_[c];
  6801.                   b = Jq.run(function() {
  6802.                       ei(d);
  6803.                       delete this.clients_[c];
  6804.                       delete this.unsubscribeAsyncHandles_[c]
  6805.                   }
  6806.                   .bind(this));
  6807.                   this.unsubscribeAsyncHandles_[c] = b
  6808.               }
  6809.           }
  6810.           ;
  6811.  
  6812.  
  6813.       */
  6814.  
  6815.  
  6816.  
  6817.  
  6818.       const onManagerFound = (dummyManager) => {
  6819.         if (!dummyManager || typeof dummyManager !== 'object') return;
  6820.  
  6821.         const mgrProto = dummyManager.constructor.prototype;
  6822.  
  6823.         let keyCallbackStore = '';
  6824.         for (const [key, v] of Object.entries(dummyManager)) {
  6825.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  6826.         }
  6827.  
  6828.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  6829.  
  6830.         if (mgrProto.unsubscribe16) return;
  6831.  
  6832.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  6833.  
  6834.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  6835.         console.log("[Begin]");
  6836.  
  6837.  
  6838.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  6839.         const isEmptyObject = (obj) => {
  6840.           for (let key in obj) {
  6841.             if (obj.hasOwnProperty(key)) return false;
  6842.           }
  6843.           return true;
  6844.         }
  6845.  
  6846.         const idMapper = new Map();
  6847.  
  6848.         const convertId = function (objectId) {
  6849.           if (!objectId || typeof objectId !== 'string') return null;
  6850.  
  6851.           let result = idMapper.get(objectId)
  6852.           if (result) return result;
  6853.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  6854.           idMapper.set(objectId, result)
  6855.           return result;
  6856.         }
  6857.  
  6858.  
  6859.         const rafHandleHolder = [];
  6860.  
  6861.         let pzw = 0;
  6862.         let lza = 0;
  6863.         const rafHandlerFn = () => {
  6864.           pzw = 0;
  6865.           if (rafHandleHolder.length === 1) {
  6866.             const f = rafHandleHolder[0];
  6867.             rafHandleHolder.length = 0;
  6868.             f();
  6869.           } else if (rafHandleHolder.length > 1) {
  6870.             const arr = rafHandleHolder.slice(0);
  6871.             rafHandleHolder.length = 0;
  6872.             for (const fn of arr) fn();
  6873.           }
  6874.         };
  6875.  
  6876.  
  6877.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  6878.  
  6879.           const checkIntegrityForSubscribe = (mgr) => {
  6880.             if (mgr
  6881.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  6882.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  6883.  
  6884.               const ns = new Set(Object.keys(mgr));
  6885.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  6886.  
  6887.               if (ns.size >= 6 && ms.size >= 4) {
  6888.                 // including 'subscribe18'
  6889.                 // 'unsubscribe16', 'subscribe19'
  6890.  
  6891.                 let r = 0;
  6892.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  6893.                   r += ns.has(k) ? 1 : 0;
  6894.                 }
  6895.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  6896.                   r += ms.has(k) ? 1 : 0;
  6897.                 }
  6898.                 if (r === 10) {
  6899.                   const isObject = (c) => (c || 0).constructor === Object;
  6900.  
  6901.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  6902.  
  6903.                     return true;
  6904.                   }
  6905.  
  6906.  
  6907.                 }
  6908.  
  6909.               }
  6910.  
  6911.  
  6912.             }
  6913.             return false;
  6914.           }
  6915.  
  6916.           mgrProto.subscribe19 = function (o, f, opts) {
  6917.  
  6918.             const ct_clients_ = this.clients_ || 0;
  6919.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  6920.  
  6921.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  6922.  
  6923.             let objectId = ((o || 0).invalidationId || 0).objectId;
  6924.             if (!objectId) return this.subscribe18.apply(this, arguments);
  6925.             objectId = convertId(objectId);
  6926.  
  6927.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  6928.  
  6929.             if (ct_clients_[objectId]) {
  6930.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  6931.             }
  6932.  
  6933.             return this.subscribe18.apply(this, arguments);
  6934.           }
  6935.  
  6936.           mgrProto.unsubscribe = function (o, d) {
  6937.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  6938.               this.subscribe18 = this.subscribe;
  6939.               this.subscribe = this.subscribe19;
  6940.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  6941.             }
  6942.             const ct_clients_ = this.clients_;
  6943.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  6944.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  6945.  
  6946.             let objectId = ((o || 0).invalidationId || 0).objectId;
  6947.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  6948.  
  6949.             objectId = convertId(objectId);
  6950.  
  6951.  
  6952.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  6953.  
  6954.             const callbacks = this[keyCallbackStore] || 0;
  6955.             const callbackObj = callbacks[objectId] || 0;
  6956.  
  6957.  
  6958.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  6959.               const w = ct_clients_[objectId];
  6960.               --lza;
  6961.               if (lza < -1e9) lza = -1;
  6962.               const qta = lza;
  6963.               rafHandleHolder.push(() => {
  6964.                 if (qta === ct_handles_[objectId]) {
  6965.                   const o = {
  6966.                     callbacks, callbackObj,
  6967.                     client: ct_clients_[objectId],
  6968.                     handle: ct_handles_[objectId]
  6969.                   };
  6970.                   let p = 0;
  6971.                   try {
  6972.                     if (ct_clients_[objectId] === w) {
  6973.                       w && "function" === typeof w.dispose && w.dispose();
  6974.                       delete ct_clients_[objectId];
  6975.                       delete ct_handles_[objectId];
  6976.                       p = 1;
  6977.                     } else {
  6978.                       // w && "function" === typeof w.dispose && w.dispose();
  6979.                       // delete ct_clients_[objectId];
  6980.                       // delete ct_handles_[objectId];
  6981.                       p = 2;
  6982.                     }
  6983.                   } catch (e) {
  6984.                     console.warn(e);
  6985.                   }
  6986.                   console.log(`unsubscribed: ${p}`, this, o);
  6987.                 }
  6988.               });
  6989.               ct_handles_[objectId] = qta;
  6990.               if (pzw === 0) {
  6991.                 pzw = requestAnimationFrame(rafHandlerFn);
  6992.               }
  6993.             }
  6994.           }
  6995.  
  6996.  
  6997.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  6998.  
  6999.         } else {
  7000.  
  7001.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  7002.         }
  7003.  
  7004.         console.log("[End]");
  7005.  
  7006.         console.groupEnd();
  7007.  
  7008.       }
  7009.  
  7010.  
  7011.  
  7012.       /*
  7013.  
  7014.  
  7015.               a.prototype.async = function(e, h) {
  7016.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  7017.               }
  7018.               ;
  7019.               a.prototype.cancelAsync = function(e) {
  7020.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  7021.               }
  7022.  
  7023.       */
  7024.  
  7025.  
  7026.  
  7027.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  7028.  
  7029.         let __dummyManager__ = null;
  7030.  
  7031.         mightFirstCheckOnYtInit();
  7032.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  7033.         console.log("[Begin]");
  7034.         (() => {
  7035.  
  7036.           const tag = "yt-invalidation-continuation"
  7037.           const dummy = document.createElement(tag);
  7038.  
  7039.           const cProto = getProto(dummy);
  7040.           if (!cProto || !cProto.attached) {
  7041.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7042.             return;
  7043.           }
  7044.  
  7045.           const dummyManager = (dummy.inst || dummy).manager_ || 0;
  7046.           __dummyManager__ = dummyManager;
  7047.  
  7048.           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) {
  7049.  
  7050.  
  7051.             const rafHub = new RAFHub();
  7052.  
  7053.             rafHub.keepRAF = true;
  7054.             cProto.async71 = cProto.async;
  7055.             cProto.cancelAsync71 = cProto.cancelAsync;
  7056.  
  7057.             // mostly for subscription timeoutMs 10000ms
  7058.             let mcw = 1; // 1, 3, 5, ...
  7059.             let arr = new Map();
  7060.  
  7061.             let __asyncInited__ = 0;
  7062.             let __timeoutStartId__ = null;
  7063.             const __asyncInit__ = () => {
  7064.  
  7065.               if (__asyncInited__) return;
  7066.               __asyncInited__ = 1;
  7067.  
  7068.               __timeoutStartId__ = setTimeout(() => { });
  7069.               mcw = __timeoutStartId__ * 2 + 1;
  7070.  
  7071.               setInterval(() => {
  7072.  
  7073.                 if (!arr.length) return;
  7074.  
  7075.                 const p = Date.now();
  7076.                 let deleteKeys = [];
  7077.                 arr.forEach((entry, key) => {
  7078.  
  7079.  
  7080.                   if (entry.cid === -1) {
  7081.                     entry.cid = -2;
  7082.                   } else if (entry.cid === -2) {
  7083.  
  7084.                     let offset = p - entry.add
  7085.                     if (offset < 0) offset = 0;
  7086.                     let delay2 = entry.delay - offset;
  7087.                     if (delay2 < 0) delay2 = 0;
  7088.                     entry.cid = setTimeout(entry.q(), delay2);
  7089.                     entry.q = null;
  7090.  
  7091.                   } else if (entry.add + entry.delay < p) {
  7092.                     deleteKeys.push(key);
  7093.  
  7094.                   }
  7095.  
  7096.                 })
  7097.  
  7098.                 for (const key of deleteKeys) arr.delete(key);
  7099.  
  7100.               }, 2000)
  7101.  
  7102.             }
  7103.  
  7104.  
  7105.  
  7106.  
  7107.             cProto.async = function (e, h) {
  7108.  
  7109.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  7110.  
  7111.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  7112.  
  7113.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  7114.  
  7115.  
  7116.               if (!this.__asyncInited__) {
  7117.                 this.__asyncInited__ = 1;
  7118.                 __asyncInit__();
  7119.               }
  7120.               mcw += 2; // 2K+3, 2K+4, ...
  7121.               if (mcw > 1e9) mcw = mcw % 1e4;
  7122.               const cid = mcw;
  7123.               const q = () => {
  7124.                 return () => {
  7125.                   console.log('async h > 8000');
  7126.                   e.call(this);
  7127.                 }
  7128.               }
  7129.               // setTimeout(q, delay)
  7130.               arr.set(cid, {
  7131.                 cid: -1, // -1 -> -2 -> cid
  7132.                 add: Date.now(),
  7133.                 q,
  7134.                 delay: h
  7135.               });
  7136.               // console.log('cid-async', cid)
  7137.               return cid;
  7138.  
  7139.             }
  7140.  
  7141.  
  7142.             cProto.cancelAsync = function (e) {
  7143.  
  7144.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  7145.  
  7146.               // console.log('cid-unasync', e)
  7147.  
  7148.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  7149.  
  7150.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  7151.  
  7152.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  7153.  
  7154.                 if (!arr.has(e)) return; // duplciated cancel
  7155.  
  7156.                 const entry = arr.get(e);
  7157.                 if (entry.cid < 0) {
  7158.                   entry.cid = 0;
  7159.                   arr.delete(e);
  7160.                 } else {
  7161.                   clearTimeout(entry.cid); // cid >= 1
  7162.                   entry.cid = 0;
  7163.                   arr.delete(e);
  7164.                 }
  7165.  
  7166.               } else {
  7167.  
  7168.                 return this.cancelAsync71(e);
  7169.  
  7170.               }
  7171.  
  7172.             }
  7173.  
  7174.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  7175.  
  7176.           } else {
  7177.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  7178.  
  7179.           }
  7180.  
  7181.         })();
  7182.  
  7183.         console.log("[End]");
  7184.  
  7185.         console.groupEnd();
  7186.  
  7187.  
  7188.  
  7189.         onManagerFound(__dummyManager__);
  7190.  
  7191.       }).catch(console.warn);
  7192.  
  7193.  
  7194.  
  7195.  
  7196.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  7197.  
  7198.  
  7199.  
  7200.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  7201.  
  7202.  
  7203.           mightFirstCheckOnYtInit();
  7204.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  7205.           console.log("[Begin]");
  7206.           (() => {
  7207.  
  7208.             const tag = "yt-live-interactivity-component-background"
  7209.             const dummy = document.createElement(tag);
  7210.  
  7211.             const cProto = getProto(dummy);
  7212.             if (!cProto || !cProto.attached) {
  7213.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7214.               return;
  7215.             }
  7216.  
  7217.  
  7218.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  7219.  
  7220.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  7221.               cProto.maybeLoadAnimationBackground = function () {
  7222.                 let toRun = true;
  7223.                 if (!this.__bypassDisableAnimationBackground__) {
  7224.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  7225.                     if (!this.lottieAnimation) {
  7226.                       if (this.useAnimationBackground === true) {
  7227.                         console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7228.                       }
  7229.                       toRun = false;
  7230.                     }
  7231.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  7232.                     if (this.useAnimationBackground === true) {
  7233.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7234.                       this.useAnimationBackground = false;
  7235.                     }
  7236.                   }
  7237.                 }
  7238.                 if (toRun) {
  7239.                   return this.maybeLoadAnimationBackground77.apply(this, arguments);
  7240.                 }
  7241.               }
  7242.  
  7243.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  7244.  
  7245.             } else {
  7246.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  7247.  
  7248.             }
  7249.  
  7250.           })();
  7251.  
  7252.           console.log("[End]");
  7253.  
  7254.           console.groupEnd();
  7255.  
  7256.  
  7257.         }).catch(console.warn);
  7258.  
  7259.       }
  7260.  
  7261.  
  7262.     }
  7263.  
  7264.  
  7265.  
  7266.  
  7267.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  7268.  
  7269.     const fixJsonParse = () => {
  7270.  
  7271.  
  7272.  
  7273.       if (jsonParseFix && typeof JSON.parse === 'function' && !JSON.parse68) {
  7274.  
  7275.         let { _parse, _JSON } = jsonParseFix;
  7276.  
  7277.  
  7278.         let error = 0;
  7279.         try {
  7280.           _parse.apply(JSON, ["{}"])
  7281.           _JSON = JSON;
  7282.         } catch (e) {
  7283.           error = 1;
  7284.         }
  7285.         if (error === 1) {
  7286.  
  7287.           try {
  7288.             _parse.apply(_JSON, ["{}"])
  7289.           } catch (e) {
  7290.             error = 2;
  7291.           }
  7292.           if (error === 2) {
  7293.             return;
  7294.           }
  7295.         }
  7296.  
  7297.  
  7298.         JSON.parse68 = JSON.parse;
  7299.  
  7300.         JSON.parse = function parse(a, b) {
  7301.           const stack = (new Error()).stack;
  7302.           if (stack.includes('.readyStateChangeHandler_')) return _parse.apply(_JSON, arguments);
  7303.           return this.parse68(...arguments);
  7304.         };
  7305.  
  7306.         JSON.parse.toString = function () {
  7307.           return JSON.parse68.toString();
  7308.         };
  7309.  
  7310.         jsonParseFix = null;
  7311.  
  7312.       }
  7313.  
  7314.     }
  7315.  
  7316.     if (DE_JSONPRUNE_FOR_readyStateChangeHandler_) {
  7317.       promiseForCustomYtElementsReady.then(fixJsonParse);
  7318.       fixJsonParse();
  7319.     }
  7320.  
  7321.   });
  7322.  
  7323.  
  7324.  
  7325. })({ IntersectionObserver });