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YouTube 超快聊天

YouTube直播聊天的终极性能提升

当前为 2023-09-28 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.60.12
  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. // @require             https://greasyfork.org/scripts/475632-ytconfighacks/code/ytConfigHacks.js?version=1252732
  19. //
  20. // @compatible          firefox Violentmonkey
  21. // @compatible          firefox Tampermonkey
  22. // @compatible          firefox FireMonkey
  23. // @compatible          chrome Violentmonkey
  24. // @compatible          chrome Tampermonkey
  25. // @compatible          opera Violentmonkey
  26. // @compatible          opera Tampermonkey
  27. // @compatible          safari Stay
  28. // @compatible          edge Violentmonkey
  29. // @compatible          edge Tampermonkey
  30. // @compatible          brave Violentmonkey
  31. // @compatible          brave Tampermonkey
  32. //
  33. // @description         Ultimate Performance Boost for YouTube Live Chats
  34. // @description:ja      YouTubeのライブチャットの究極のパフォーマンスブースト
  35. // @description:zh-TW   YouTube直播聊天的終極性能提升
  36. // @description:zh-CN   YouTube直播聊天的终极性能提升
  37. //
  38. // ==/UserScript==
  39.  
  40. ((__CONTEXT__) => {
  41.   'use strict';
  42.  
  43.   const ENABLE_REDUCED_MAXITEMS_FOR_FLUSH = true;         // TRUE to enable trimming down to MAX_ITEMS_FOR_FULL_FLUSH (25) messages when there are too many unrendered messages
  44.   const MAX_ITEMS_FOR_TOTAL_DISPLAY = 90;                 // By default, 250 latest messages will be displayed, but displaying MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages is already sufficient.
  45.   const MAX_ITEMS_FOR_FULL_FLUSH = 25;                    // If there are too many new (stacked) messages not yet rendered, clean all and flush MAX_ITEMS_FOR_FULL_FLUSH (25) latest messages then incrementally added back to MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages
  46.  
  47.   const ENABLE_NO_SMOOTH_TRANSFORM = true;                // Depends on whether you want the animation effect for new chat messages
  48.   const USE_OPTIMIZED_ON_SCROLL_ITEMS = true;             // TRUE for the majority
  49.   const USE_WILL_CHANGE_CONTROLLER = false;               // FALSE for the majority
  50.   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.
  51.   const ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  52.  
  53.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  54.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  55.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  56.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  57.  
  58.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  59.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  60.  
  61.   // Replace requestAnimationFrame timers with custom implementation
  62.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  63.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  64.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  65.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  66.  
  67.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  68.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  69.  
  70.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  71.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  72.  
  73.   // Data Manipulation for Participants (Participant List)
  74.   // << if DO_PARTICIPANT_LIST_HACKS >>
  75.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  76.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  77.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  78.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  79.   // << end >>
  80.  
  81.   // show more button
  82.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  83.  
  84.   // faster stampDomArray_ for participants list creation
  85.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  86.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  87.  
  88.   // reuse yt components
  89.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  90.  
  91.   // images <Group#I01>
  92.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  93.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  94.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  95.  
  96.   const DO_LINK_PREFETCH = true;                      // DO NOT CHANGE
  97.   // << if DO_LINK_PREFETCH >>
  98.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  99.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  100.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  101.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  102.   // << end >>
  103.  
  104.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  105.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  106.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  107.  
  108.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  109.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  110.  
  111.   const ATTEMPT_ANIMATED_TICKER_BACKGROUND = 'steps'   // false OR '' for disabled, 'linear', 'steps' for easing-function
  112.   // << if ATTEMPT_ANIMATED_TICKER_BACKGROUND >>
  113.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  114.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  115.   // [limiting 500 max steps] is recommended for "confortable visual change"
  116.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  117.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  118.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  119.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  120.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  121.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  122.   // << end >>
  123.  
  124.   const FIX_TOOLTIP_DISPLAY = true;
  125.   const USE_VANILLA_DEREF = true;
  126.   const FIX_DROPDOWN_DERAF = true;                        // DONT CHANGE
  127.  
  128.  
  129.   const CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true;        // cache the menu data and used for the next reopen
  130.   const ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU = true; // pause auto scroll faster when the context menu is about to show
  131.   const ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU = true;        // avoid multiple requests on the same time
  132.  
  133.   const BOOST_MENU_OPENCHANGED_RENDERING = true;
  134.   const FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK = true;  // click again = close
  135.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true; // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  136.   // const FIX_MENU_CAPTURE_SCROLL = true;
  137.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;        // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  138.  
  139.   const RAF_FIX_keepScrollClamped = true;
  140.   const RAF_FIX_scrollIncrementally = 2;            // 0: no action; 1: basic fix; 2: also fix scroll position
  141.  
  142.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  143.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  144.  
  145.   const CHECK_JSONPRUNE = true;                        // This is a bug in Brave
  146.   // << end >>
  147.  
  148.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  149.  
  150.   const CHANGE_DATA_FLUSH_ASYNC = false;
  151.   // CHANGE_DATA_FLUSH_ASYNC is disabled due to bug report: https://greasyfork.org/scripts/469878-youtube-super-fast-chat/discussions/199479
  152.   // to be further investigated
  153.  
  154.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  155.  
  156.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  157.   // 0 = default Yt animation background [= no fix];
  158.   // 1 = disable default animation background [= keep special animation];
  159.   // 2 = disable all animation backgrounds [= no animation backbround]
  160.  
  161.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  162.  
  163.   const MAX_TOOLTIP_NO_WRAP_WIDTH = '72vw'; // '' for disable; accept values like '60px', '25vw'
  164.  
  165.   const AMEND_TICKER_handleLiveChatAction = true; // to fix ticker duplication and unresponsively fast ticker generation
  166.  
  167.   const ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION = true;
  168.   const ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME = true;
  169.   const FIX_BATCH_TICKER_ORDER = true;
  170.  
  171.   const DISABLE_Translation_By_Google = true;
  172.  
  173.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  174.   /*
  175.  
  176.     ### Time Approach
  177.  
  178.     // all below values can make the time interval > 250ms
  179.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  180.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  181.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  182.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  183.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  184.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  185.  
  186.     ### Pixel Check
  187.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  188.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  189.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  190.  
  191.     ### Example - totalDuration = 280000
  192.     totalDuration 280000
  193.     stepInterval 0.5
  194.     numOfSteps = Math.round(100 / stepInterval) = 200
  195.     time interval = 280000 / 200 = 1400ms <acceptable>
  196.  
  197.     ### Example - totalDuration = 18000
  198.     totalDuration 18000
  199.     stepInterval 5
  200.     numOfSteps = Math.round(100 / stepInterval) = 20
  201.     time interval = 18000 / 20 = 900ms <acceptable>
  202.  
  203.     ### Example - totalDuration = 5000
  204.     totalDuration 5000
  205.     stepInterval 5
  206.     numOfSteps = Math.round(100 / stepInterval) = 20
  207.     time interval = 5000 / 20 = 250ms <threshold value>
  208.  
  209.     ### Example - totalDuration = 3600
  210.     totalDuration 3600
  211.     stepInterval 5
  212.     numOfSteps = Math.round(100 / stepInterval) = 20
  213.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  214.  
  215.   */
  216.  
  217.   // =======================================================================================================
  218.  
  219.   // AUTOMAICALLY DETERMINED
  220.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  221.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  222.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  223.   let runTickerClassName = 'run-ticker';
  224.  
  225.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  226.   /*
  227.     WebP: data:image/webp;base64,UklGRjAB
  228.     PNG: data:image/png;base64,iVBORw0KGg==
  229.     JPEG: data:image/jpeg;base64,/9j/4AA=
  230.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  231.     BMP: data:image/bmp;base64,Qk1oAAAA
  232.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  233.  
  234.     WebP: data:image/webp;base64,AAAAAAA=
  235.     PNG:  data:image/png;base64,AAAAAAA=
  236.     JPEG: data:image/jpeg;base64,AAAAAAA=
  237.     GIF:  data:image/gif;base64,AAAAAAA=
  238.     BMP:  data:image/bmp;base64,AAAAAAA=
  239.  
  240.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  241.  
  242.  
  243.   */
  244.  
  245.   // image sizing code
  246.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  247.  
  248.  
  249.   //   function KC(a, b, c, d) {
  250.   //     d = void 0 === d ? "width" : d;
  251.   //     if (!a || !a.length)
  252.   //         return null;
  253.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  254.   //         var e = window.devicePixelRatio;
  255.   //         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"));
  256.   //         HC = e
  257.   //     } else
  258.   //         HC || (HC = window.devicePixelRatio);
  259.   //     e = HC;
  260.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  261.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  262.   //         return a[0].url || null;
  263.   //     e = a.length;
  264.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  265.   //         return a[e - 1].url || null;
  266.   //     if (c)
  267.   //         for (var h = 0; h < e; h++)
  268.   //             if (0 <= a[h].url.indexOf(c))
  269.   //                 return a[h].url || null;
  270.   //     for (c = 0; c < e; c++)
  271.   //         if (a[c][d] >= b)
  272.   //             return a[c].url || null;
  273.   //     for (b = e - 1; 0 < b; b--)
  274.   //         if (a[b][d])
  275.   //             return a[b].url || null;
  276.   //     return a[0].url || null
  277.   // }
  278.  
  279.   const { IntersectionObserver } = __CONTEXT__;
  280.  
  281.   /** @type {globalThis.PromiseConstructor} */
  282.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  283.  
  284.   // let jsonParseFix = null;
  285.  
  286.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  287.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  288.  
  289.   // necessity of cssText3_smooth_transform_position to be checked.
  290.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  291.  
  292.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  293.         position: static !important;
  294.     }
  295.  
  296.   `: '';
  297.  
  298.   // fallback if dummy style fn fails
  299.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  300.  
  301.     /* optional */
  302.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  303.         height: auto !important;
  304.         min-height: unset !important;
  305.     }
  306.  
  307.     #items.style-scope.yt-live-chat-item-list-renderer {
  308.         transform: translateY(0px) !important;
  309.     }
  310.  
  311.     /* optional */
  312.  
  313.   `: '';
  314.  
  315.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  316.  
  317.     /* ------------------------------------------------------------------------------------------------------------- */
  318.  
  319.     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 {
  320.         contain: layout style;
  321.     }
  322.  
  323.     #items.style-scope.yt-live-chat-item-list-renderer {
  324.         contain: layout paint style;
  325.     }
  326.  
  327.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  328.         contain: style;
  329.     }
  330.  
  331.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  332.         contain: size style;
  333.     }
  334.  
  335.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  336.         contain: size layout paint style;
  337.     }
  338.  
  339.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  340.         contain: layout paint style;
  341.     }
  342.  
  343.     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 {
  344.         contain: layout style;
  345.     }
  346.  
  347.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  348.         contain: layout paint style;
  349.     }
  350.  
  351.     /* ------------------------------------------------------------------------------------------------------------- */
  352.  
  353.   ` : '';
  354.  
  355.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  356.  
  357.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  358.         top: 4px;
  359.         transition-property: top;
  360.         bottom: unset;
  361.     }
  362.  
  363.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  364.         top: -42px;
  365.     }
  366.  
  367.   `: '';
  368.  
  369.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  370.  
  371.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  372.         contain: layout style;
  373.     }
  374.  
  375.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  376.         overflow: visible;
  377.     }
  378.  
  379.   `: '';
  380.  
  381.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  382.  
  383.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  384.         --yt-live-chat-action-panel-top-border: none;
  385.     }
  386.  
  387.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  388.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  389.     }
  390.  
  391.     html #panel-pages.yt-live-chat-renderer {
  392.         border-top: 0;
  393.         border-bottom: 0;
  394.     }
  395.  
  396.   `: '';
  397.  
  398.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  399.  
  400.     img,
  401.     yt-img-shadow[height][width],
  402.     yt-img-shadow {
  403.         content-visibility: visible !important;
  404.     }
  405.  
  406.   `  : '';
  407.  
  408.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  409.  
  410.     /* remove YouTube constant will-change */
  411.     /* constant value will slow down the performance; default auto */
  412.  
  413.     /* www-player.css */
  414.     html .ytp-contextmenu,
  415.     html .ytp-settings-menu {
  416.         will-change: unset;
  417.     }
  418.  
  419.     /* frequently matched elements */
  420.     html .fill.yt-interaction,
  421.     html .stroke.yt-interaction,
  422.     html .yt-spec-touch-feedback-shape__fill,
  423.     html .yt-spec-touch-feedback-shape__stroke {
  424.         will-change: unset;
  425.     }
  426.  
  427.     /* live_chat_polymer.js */
  428.     /*
  429.     html .toggle-button.tp-yt-paper-toggle-button,
  430.     html #primaryProgress.tp-yt-paper-progress,
  431.     html #secondaryProgress.tp-yt-paper-progress,
  432.     html #onRadio.tp-yt-paper-radio-button,
  433.     html .fill.yt-interaction,
  434.     html .stroke.yt-interaction,
  435.     html .yt-spec-touch-feedback-shape__fill,
  436.     html .yt-spec-touch-feedback-shape__stroke {
  437.         will-change: unset;
  438.     }
  439.     */
  440.  
  441.     /* desktop_polymer_enable_wil_icons.js */
  442.     /* html .fill.yt-interaction,
  443.     html .stroke.yt-interaction, */
  444.     html tp-yt-app-header::before,
  445.     html tp-yt-iron-list,
  446.     html #items.tp-yt-iron-list > *,
  447.     html #onRadio.tp-yt-paper-radio-button,
  448.     html .toggle-button.tp-yt-paper-toggle-button,
  449.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  450.     html #items.ytd-post-multi-image-renderer,
  451.     html #items.ytd-horizontal-card-list-renderer,
  452.     html #items.yt-horizontal-list-renderer,
  453.     html #left-arrow.yt-horizontal-list-renderer,
  454.     html #right-arrow.yt-horizontal-list-renderer,
  455.     html #items.ytd-video-description-infocards-section-renderer,
  456.     html #items.ytd-video-description-music-section-renderer,
  457.     html #chips.ytd-feed-filter-chip-bar-renderer,
  458.     html #chips.yt-chip-cloud-renderer,
  459.     html #items.ytd-merch-shelf-renderer,
  460.     html #items.ytd-product-details-image-carousel-renderer,
  461.     html ytd-video-preview,
  462.     html #player-container.ytd-video-preview,
  463.     html #primaryProgress.tp-yt-paper-progress,
  464.     html #secondaryProgress.tp-yt-paper-progress,
  465.     html ytd-miniplayer[enabled] /* ,
  466.     html .yt-spec-touch-feedback-shape__fill,
  467.     html .yt-spec-touch-feedback-shape__stroke */ {
  468.         will-change: unset;
  469.     }
  470.  
  471.     /* other */
  472.     .ytp-videowall-still-info-content[class],
  473.     .ytp-suggestion-image[class] {
  474.         will-change: unset !important;
  475.     }
  476.  
  477.   ` : '';
  478.  
  479.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  480.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  481.  
  482.     elzm-fonts {
  483.         visibility: collapse;
  484.         position: fixed;
  485.         top: -10px;
  486.         left: -10px;
  487.         font-size: 10pt;
  488.         line-height: 100%;
  489.         width: 100px;
  490.         height: 100px;
  491.         transform: scale(0.1);
  492.         transform: scale(0.01);
  493.         transform: scale(0.001);
  494.         transform-origin: 0 0;
  495.         contain: strict;
  496.         display: block;
  497.  
  498.         pointer-events: none !important;
  499.         user-select: none !important;
  500.     }
  501.  
  502.     elzm-fonts[id]#elzm-fonts-yk75g {
  503.         user-select: none !important;
  504.         pointer-events: none !important;
  505.     }
  506.  
  507.     elzm-font {
  508.         visibility: collapse;
  509.         position: absolute;
  510.         line-height: 100%;
  511.         width: 100px;
  512.         height: 100px;
  513.         contain: strict;
  514.         display: block;
  515.  
  516.         user-select: none !important;
  517.         pointer-events: none !important;
  518.     }
  519.  
  520.     elzm-font::before {
  521.         visibility: collapse;
  522.         position: absolute;
  523.         line-height: 100%;
  524.         width: 100px;
  525.         height: 100px;
  526.         contain: strict;
  527.         display: block;
  528.  
  529.         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';
  530.  
  531.         user-select: none !important;
  532.         pointer-events: none !important;
  533.     }
  534.  
  535.   `: '';
  536.  
  537.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  538.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  539.         -webkit-backdrop-filter: none;
  540.         backdrop-filter: none;
  541.     }
  542.   `: '';
  543.  
  544.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  545.  
  546.     @keyframes blinker-miuzp {
  547.         0%, 60%, 100% {
  548.             opacity: 1;
  549.         }
  550.         30% {
  551.             opacity: 0.6;
  552.         }
  553.     }
  554.  
  555.     yt-icon-button#show-more.has-new-messages-miuzp {
  556.         animation: blinker-miuzp 1.74s linear infinite;
  557.     }
  558.  
  559.   `: '';
  560.  
  561.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  562.  
  563.     yt-live-chat-paid-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-membership-item-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  568.       pointer-events: none !important;
  569.     }
  570.  
  571.     yt-live-chat-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  572.       pointer-events: none !important;
  573.     }
  574.  
  575.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  576.       pointer-events: none !important;
  577.     }
  578.  
  579.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  580.       pointer-events: none !important;
  581.     }
  582.  
  583.   `: '';
  584.  
  585.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  586.  
  587.  
  588.     tp-yt-paper-tooltip[role="tooltip"] {
  589.       box-sizing: content-box !important;
  590.       margin: 0px !important;
  591.       padding: 0px !important;
  592.       contain: none !important;
  593.     }
  594.  
  595.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  596.       box-sizing: content-box !important;
  597.       display: inline-block;
  598.       contain: none !important;
  599.     }
  600.  
  601.  
  602.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  603.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  604.       width: max-content;
  605.       text-overflow: ellipsis;
  606.       overflow: hidden;
  607.       white-space: nowrap;
  608.     }
  609.  
  610.  
  611.   `: '';
  612.  
  613.  
  614.   const cssText13_no_text_select_when_menu_visible = `
  615.     [menu-visible] {
  616.       --sfc47-text-select: none;
  617.     }
  618.     [menu-visible] #header[id][class],
  619.     [menu-visible] #content[id][class],
  620.     [menu-visible] #header[id][class] *,
  621.     [menu-visible] #content[id][class] * {
  622.       user-select: var(--sfc47-text-select) !important;
  623.     }
  624.     [menu-visible] #menu {
  625.       --sfc47-text-select: inherit;
  626.     }
  627.   `
  628.  
  629.  
  630.   const addCss = () => `
  631.  
  632.     @property --ticker-rtime {
  633.       syntax: "<percentage>";
  634.       inherits: false;
  635.       initial-value: 0%;
  636.     }
  637.  
  638.     /*
  639.     .run-ticker {
  640.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  641.     }
  642.  
  643.     .run-ticker-test {
  644.       background: #00000001;
  645.     }
  646.  
  647.     .run-ticker-forced,
  648.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  649.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  650.     {
  651.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  652.     }
  653.     */
  654.  
  655.     .run-ticker {
  656.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  657.     }
  658.  
  659.     .run-ticker,
  660.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  661.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  662.     {
  663.       background: var(--ticker-bg) !important;
  664.     }
  665.  
  666.     yt-live-chat-ticker-dummy777-item-renderer {
  667.       background: #00000001;
  668.     }
  669.  
  670.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  671.       position: fixed !important;
  672.       top: -1000px !important;
  673.       left: -1000px !important;
  674.       font-size: 1px !important;
  675.       color: transparent !important;
  676.       pointer-events: none !important;
  677.       z-index: -1 !important;
  678.       contain: strict !important;
  679.       box-sizing: border-box !important;
  680.       pointer-events: none !important;
  681.       user-select: none !important;
  682.       max-width: 1px !important;
  683.       max-height: 1px !important;
  684.       overflow: hidden !important;
  685.       visibility: collapse !important;
  686.       display: none !important;
  687.     }
  688.  
  689.     yt-live-chat-ticker-dummy777-item-renderer #container {
  690.       background: inherit;
  691.     }
  692.  
  693.  
  694.     ${cssText8_fonts_pre_render}
  695.  
  696.     ${cssText9_no_backdrop_filter_when_menu_shown}
  697.  
  698.     @supports (contain: layout paint style) {
  699.  
  700.       ${cssText5}
  701.  
  702.     }
  703.  
  704.     @supports (color: var(--general)) {
  705.  
  706.       html {
  707.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  708.       }
  709.  
  710.       ${cssText3_smooth_transform_position}
  711.  
  712.       ${cssText7c_will_change_unset}
  713.  
  714.       ${cssText7b_content_visibility_unset}
  715.  
  716.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  717.           overflow-y: scroll;
  718.           padding-right: 0;
  719.       }
  720.  
  721.       ${cssText4_smooth_transform_forced_props}
  722.  
  723.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  724.           pointer-events: none !important;
  725.       }
  726.  
  727.       #continuations, #continuations * {
  728.           contain: strict;
  729.           position: fixed;
  730.           top: 2px;
  731.           height: 1px;
  732.           width: 2px;
  733.           height: 1px;
  734.           visibility: collapse;
  735.       }
  736.  
  737.       ${cssText6b_show_more_button}
  738.  
  739.       ${cssText6d_input_panel_border}
  740.  
  741.       ${cssText6c_input_panel_overflow}
  742.  
  743.     }
  744.  
  745.  
  746.     @supports (overflow-anchor: auto) {
  747.  
  748.       .no-anchor * {
  749.           overflow-anchor: none;
  750.       }
  751.       .no-anchor > item-anchor {
  752.           overflow-anchor: auto;
  753.       }
  754.  
  755.       item-anchor {
  756.  
  757.           height:1px;
  758.           width: 100%;
  759.           transform: scaleY(0.00001);
  760.           transform-origin:0 0;
  761.           contain: strict;
  762.           opacity:0;
  763.           display:flex;
  764.           position:relative;
  765.           flex-shrink:0;
  766.           flex-grow:0;
  767.           margin-bottom:0;
  768.           overflow:hidden;
  769.           box-sizing:border-box;
  770.           visibility: visible;
  771.           content-visibility: visible;
  772.           contain-intrinsic-size: auto 1px;
  773.           pointer-events:none !important;
  774.  
  775.       }
  776.  
  777.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  778.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  779.       }
  780.  
  781.       html item-anchor {
  782.  
  783.           height: 1px;
  784.           width: 1px;
  785.           top: auto;
  786.           left: auto;
  787.           right: auto;
  788.           bottom: auto;
  789.           transform: translateY(-1px);
  790.           position: absolute;
  791.           z-index: -1;
  792.  
  793.       }
  794.  
  795.     }
  796.  
  797.     @supports (color: var(--pre-rendering)) {
  798.  
  799.       @keyframes dontRenderAnimation {
  800.           0% {
  801.               background-position-x: 3px;
  802.           }
  803.           100% {
  804.               background-position-x: 4px;
  805.           }
  806.       }
  807.  
  808.       .dont-render[class] {
  809.           /* visibility: collapse !important; */
  810.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  811.  
  812.           transform: scale(0.01) !important;
  813.           transform: scale(0.00001) !important;
  814.           transform: scale(0.0000001) !important;
  815.           transform-origin: 0 0 !important;
  816.           z-index: -1 !important;
  817.           contain: strict !important;
  818.           box-sizing: border-box !important;
  819.  
  820.           height: 1px !important;
  821.           height: 0.1px !important;
  822.           height: 0.01px !important;
  823.           height: 0.0001px !important;
  824.           height: 0.000001px !important;
  825.  
  826.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  827.  
  828.           pointer-events: none !important;
  829.           user-select: none !important;
  830.  
  831.       }
  832.  
  833.       #sk35z {
  834.         display: block !important;
  835.  
  836.         visibility: collapse !important;
  837.  
  838.         transform: scale(0.01) !important;
  839.         transform: scale(0.00001) !important;
  840.         transform: scale(0.0000001) !important;
  841.         transform-origin: 0 0 !important;
  842.         z-index: -1 !important;
  843.         contain: strict !important;
  844.         box-sizing: border-box !important;
  845.  
  846.         height: 1px !important;
  847.         height: 0.1px !important;
  848.         height: 0.01px !important;
  849.         height: 0.0001px !important;
  850.         height: 0.000001px !important;
  851.  
  852.         position: absolute !important;
  853.         top: -1000px !important;
  854.         left: -1000px !important;
  855.  
  856.       }
  857.  
  858.     }
  859.  
  860.     [rNgzQ] {
  861.       opacity: 0 !important;
  862.       pointer-events: none !important;
  863.     }
  864.  
  865.  
  866.     ${cssText10_show_more_blinker}
  867.  
  868.     ${cssText11_entire_message_clickable}
  869.  
  870.     ${cssText12_nowrap_tooltip}
  871.  
  872.     ${cssText13_no_text_select_when_menu_visible}
  873.  
  874.   `;
  875.  
  876.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  877.  
  878.   // Create a unique key for the script and check if it is already running
  879.   const hkey_script = 'mchbwnoasqph';
  880.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  881.   win[hkey_script] = true;
  882.  
  883.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  884.  
  885.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  886.     if (te4 < 3) {
  887.       setTimeout(() => { });
  888.       setTimeout(() => { });
  889.     }
  890.  
  891.   }
  892.  
  893.   const firstKey = (obj) => {
  894.     for (const key in obj) {
  895.       if (obj.hasOwnProperty(key)) return key;
  896.     }
  897.     return null;
  898.   }
  899.  
  900.   const firstObjectKey = (obj) => {
  901.     for (const key in obj) {
  902.       if (obj.hasOwnProperty(key) && typeof obj[key] === 'object') return key;
  903.     }
  904.     return null;
  905.   }
  906.  
  907.   function removeElementFromArray(arr, index) {
  908.     if (index >= 0 && index < arr.length) {
  909.       arr.splice(index, 1);
  910.     }
  911.   }
  912.  
  913.   function getRandomInt(a, b) {
  914.     // Ensure that 'a' and 'b' are integers
  915.     a = Math.ceil(a);
  916.     b = Math.floor(b);
  917.  
  918.     // Generate a random integer in the range [a, b]
  919.     return Math.floor(Math.random() * (b - a + 1)) + a;
  920.   }
  921.  
  922.   function deepCopy(obj, skipKeys) {
  923.     skipKeys = skipKeys || [];
  924.     if (!obj || typeof obj !== 'object') return obj;
  925.     if (Array.isArray(obj)) {
  926.       return obj.map(item => deepCopy(item, skipKeys));
  927.     }
  928.     const copy = {};
  929.     for (let key in obj) {
  930.       if (!skipKeys.includes(key)) {
  931.         copy[key] = deepCopy(obj[key], skipKeys);
  932.       }
  933.     }
  934.     return copy;
  935.   }
  936.  
  937.   class Mutex {
  938.  
  939.     constructor() {
  940.       this.p = Promise.resolve()
  941.     }
  942.  
  943.     /**
  944.      *  @param {(lockResolve: () => void)} f
  945.      */
  946.     lockWith(f) {
  947.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  948.     }
  949.  
  950.   }
  951.  
  952.   const PromiseExternal = ((resolve_, reject_) => {
  953.     const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  954.     return class PromiseExternal extends Promise {
  955.       constructor(cb = h) {
  956.         super(cb);
  957.         if (cb === h) {
  958.           /** @type {(value: any) => void} */
  959.           this.resolve = resolve_;
  960.           /** @type {(reason?: any) => void} */
  961.           this.reject = reject_;
  962.         }
  963.       }
  964.     };
  965.   })();
  966.  
  967.   /** @type {typeof PromiseExternal.prototype | null} */
  968.   let relayPromise = null;
  969.  
  970.  
  971.   /** @type {typeof PromiseExternal.prototype | null} */
  972.   let onPlayStateChangePromise = null;
  973.  
  974.  
  975.  
  976.   let playEventsStack = Promise.resolve();
  977.  
  978.  
  979.   let playerProgressChangedArg1 = null;
  980.   let playerProgressChangedArg2 = null;
  981.   let playerProgressChangedArg3 = null;
  982.  
  983.  
  984.   function dr(s) {
  985.     // reserved for future use
  986.     return s;
  987.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  988.   }
  989.  
  990.   const getProto = (element) => {
  991.     if (element) {
  992.       const cnt = element.inst || element;
  993.       return cnt.constructor.prototype || null;
  994.     }
  995.     return null;
  996.   }
  997.  
  998.   const assertor = (f) => f() || console.assert(false, f + "");
  999.  
  1000.   const fnIntegrity = (f, d) => {
  1001.     if (!f || typeof f !== 'function') {
  1002.       console.warn('f is not a function', f);
  1003.       return;
  1004.     }
  1005.     let p = f + "", s = 0, j = -1, w = 0;
  1006.     for (let i = 0, l = p.length; i < l; i++) {
  1007.       const t = p[i];
  1008.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  1009.         if (j < i - 1) w++;
  1010.         j = i;
  1011.       } else {
  1012.         s++;
  1013.       }
  1014.     }
  1015.     let itz = `${f.length}.${s}.${w}`;
  1016.     if (!d) {
  1017.       return itz;
  1018.     } else {
  1019.       return itz === d;
  1020.     }
  1021.   }
  1022.  
  1023.  
  1024.   ; (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) && (() => {
  1025.  
  1026.     const _config_ = () => {
  1027.       try {
  1028.         return ytcfg.data_;
  1029.       } catch (e) { }
  1030.       return null;
  1031.     };
  1032.  
  1033.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1034.  
  1035.       // console.log(700)
  1036.  
  1037.       if (!EXPERIMENT_FLAGS) return;
  1038.  
  1039.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1040.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1041.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1042.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1043.           // console.log(701)
  1044.         }
  1045.       }
  1046.  
  1047.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1048.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1049.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1050.         // console.log(702);
  1051.       }
  1052.  
  1053.     };
  1054.  
  1055.     const uf = (config_) => {
  1056.       config_ = config_ || _config_();
  1057.       if (config_) {
  1058.         const { EXPERIMENT_FLAGS, EXPERIMENTS_FORCED_FLAGS } = config_;
  1059.         if (EXPERIMENT_FLAGS) {
  1060.           flagsFn(EXPERIMENT_FLAGS);
  1061.           if (EXPERIMENTS_FORCED_FLAGS) flagsFn(EXPERIMENTS_FORCED_FLAGS);
  1062.         }
  1063.       }
  1064.     }
  1065.  
  1066.     window._ytConfigHacks.add((config_) => {
  1067.       uf(config_);
  1068.     });
  1069.  
  1070.     uf();
  1071.  
  1072.   })();
  1073.  
  1074.   if (DISABLE_Translation_By_Google) {
  1075.  
  1076.     let mo = new MutationObserver(() => {
  1077.  
  1078.       if (!mo) return;
  1079.       let h = document.head;
  1080.       if (!h) return;
  1081.       mo.disconnect();
  1082.       mo.takeRecords();
  1083.       mo = null;
  1084.  
  1085.       let meta = document.createElement('meta');
  1086.       meta.setAttribute('name', 'google');
  1087.       meta.setAttribute('content', 'notranslate');
  1088.       h.appendChild(meta);
  1089.  
  1090.  
  1091.     });
  1092.     mo.observe(document, { subtree: true, childList: true });
  1093.   }
  1094.  
  1095.  
  1096.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  1097.  
  1098.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  1099.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  1100.   if (!isContainSupport) {
  1101.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  1102.   } else {
  1103.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  1104.   }
  1105.  
  1106.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  1107.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  1108.   if (!isOverflowAnchorSupport) {
  1109.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  1110.   } else {
  1111.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  1112.   }
  1113.  
  1114.   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.
  1115.  
  1116.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  1117.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  1118.  
  1119.   let hasTimerModified = null;
  1120.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  1121.  
  1122.   const fxOperator = (proto, propertyName) => {
  1123.     let propertyDescriptorGetter = null;
  1124.     try {
  1125.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  1126.     } catch (e) { }
  1127.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  1128.       try {
  1129.  
  1130.         return propertyDescriptorGetter.call(dr(e));
  1131.       } catch (e) { }
  1132.       return e[propertyName];
  1133.     } : (e) => e[propertyName];
  1134.   };
  1135.  
  1136.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  1137.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  1138.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  1139.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  1140.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  1141.  
  1142.   const groupCollapsed = (text1, text2) => {
  1143.  
  1144.     console.groupCollapsed(`%c${text1}%c${text2}`,
  1145.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1146.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1147.     );
  1148.   }
  1149.  
  1150.   // const microNow = () => performance.now() + (performance.timeOrigin || performance.timing.navigationStart);
  1151.  
  1152.  
  1153.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  1154.   const onRegistryReady = (callback) => {
  1155.     if (typeof customElements === 'undefined') {
  1156.       if (!('__CE_registry' in document)) {
  1157.         // https://github.com/webcomponents/polyfills/
  1158.         Object.defineProperty(document, '__CE_registry', {
  1159.           get() {
  1160.             // return undefined
  1161.           },
  1162.           set(nv) {
  1163.             if (typeof nv == 'object') {
  1164.               delete this.__CE_registry;
  1165.               this.__CE_registry = nv;
  1166.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  1167.             }
  1168.             return true;
  1169.           },
  1170.           enumerable: false,
  1171.           configurable: true
  1172.         })
  1173.       }
  1174.       let eventHandler = (evt) => {
  1175.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1176.         const f = callback;
  1177.         callback = null;
  1178.         eventHandler = null;
  1179.         f();
  1180.       };
  1181.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1182.     } else {
  1183.       callback();
  1184.     }
  1185.   };
  1186.  
  1187.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1188.  
  1189.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1190.  
  1191.     return new Promise(resolve => {
  1192.  
  1193.       let ro = new ResizeObserver(entries => {
  1194.         if (entries && entries.length >= 1) {
  1195.           resolve();
  1196.           ro.disconnect();
  1197.           ro = null;
  1198.         }
  1199.       });
  1200.       ro.observe(sizingTarget);
  1201.  
  1202.  
  1203.  
  1204.     });
  1205.  
  1206.   } : (sizingTarget) => {
  1207.  
  1208.  
  1209.     return new Promise(resolve => {
  1210.  
  1211.       let io = new IntersectionObserver(entries => {
  1212.         if (entries && entries.length >= 1) {
  1213.           resolve();
  1214.           io.disconnect();
  1215.           io = null;
  1216.         }
  1217.       });
  1218.       io.observe(sizingTarget);
  1219.  
  1220.  
  1221.  
  1222.     });
  1223.  
  1224.   };
  1225.  
  1226.   /* globals WeakRef:false */
  1227.  
  1228.   /** @type {(o: Object | null) => WeakRef | null} */
  1229.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1230.  
  1231.   /** @type {(wr: Object | null) => Object | null} */
  1232.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1233.  
  1234.   const getLCRDummy = () => {
  1235.     // direct createElement or createComponent_ will make the emoji rendering crashed. reason TBC
  1236.  
  1237.     return Promise.all([customElements.whenDefined('yt-live-chat-app'), customElements.whenDefined('yt-live-chat-renderer')]).then(async () => {
  1238.  
  1239.       const tag = "yt-live-chat-renderer"
  1240.       let dummy = document.querySelector(tag);
  1241.       if (!dummy) {
  1242.  
  1243.         let mo = null;
  1244.  
  1245.         const ytLiveChatApp = document.querySelector('yt-live-chat-app') || document.createElement('yt-live-chat-app');
  1246.  
  1247.         const lcaProto = getProto(ytLiveChatApp);
  1248.  
  1249.         dummy = await new Promise(resolve => {
  1250.  
  1251.           if (typeof lcaProto.createComponent_ === 'function' && !lcaProto.createComponent99_) {
  1252.  
  1253.             lcaProto.createComponent99_ = lcaProto.createComponent_;
  1254.             lcaProto.createComponent98_ = function (a, b, c) {
  1255.               // (3) ['yt-live-chat-renderer', {…}, true]
  1256.               const r = this.createComponent99_.apply(this, arguments);
  1257.               if (a === 'yt-live-chat-renderer') {
  1258.                 resolve(r);
  1259.               }
  1260.               return r;
  1261.             };
  1262.             lcaProto.createComponent_ = lcaProto.createComponent98_;
  1263.  
  1264.           } else {
  1265.  
  1266.             mo = new MutationObserver(() => {
  1267.               const t = document.querySelector(tag);
  1268.               if (t) {
  1269.                 resolve(t);
  1270.               }
  1271.             });
  1272.             mo.observe(document, { subtree: true, childList: true })
  1273.           }
  1274.  
  1275.         });
  1276.  
  1277.         if (mo) {
  1278.           mo.disconnect();
  1279.           mo.takeRecords();
  1280.           mo = null;
  1281.         }
  1282.  
  1283.         if (lcaProto.createComponent99_ && lcaProto.createComponent_ && lcaProto.createComponent98_ === lcaProto.createComponent_) {
  1284.           lcaProto.createComponent_ = lcaProto.createComponent99_;
  1285.           lcaProto.createComponent99_ = null;
  1286.           lcaProto.createComponent98_ = null;
  1287.         }
  1288.  
  1289.       }
  1290.       return dummy;
  1291.  
  1292.     });
  1293.   }
  1294.  
  1295.   const { addCssManaged } = (() => {
  1296.  
  1297.     const addFontPreRendering = () => {
  1298.  
  1299.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1300.  
  1301.       let efsContainer = document.createElement('elzm-fonts');
  1302.       efsContainer.id = 'elzm-fonts-yk75g'
  1303.  
  1304.       const arr = [];
  1305.       let p = document.createElement('elzm-font');
  1306.       arr.push(p);
  1307.  
  1308.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1309.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1310.  
  1311.           p = document.createElement('elzm-font');
  1312.           p.style.fontWeight = size;
  1313.           arr.push(p);
  1314.         }
  1315.       }
  1316.  
  1317.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1318.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1319.  
  1320.           p = document.createElement('elzm-font');
  1321.           p.style.fontFamily = 'Roboto';
  1322.           p.style.fontWeight = size;
  1323.           arr.push(p);
  1324.         }
  1325.       }
  1326.  
  1327.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1328.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1329.  
  1330.           p = document.createElement('elzm-font');
  1331.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1332.           p.style.fontWeight = size;
  1333.           arr.push(p);
  1334.         }
  1335.       }
  1336.  
  1337.  
  1338.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1339.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1340.  
  1341.           p = document.createElement('elzm-font');
  1342.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1343.           p.style.fontWeight = size;
  1344.           arr.push(p);
  1345.         }
  1346.       }
  1347.  
  1348.  
  1349.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1350.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1351.  
  1352.           p = document.createElement('elzm-font');
  1353.           p.style.fontFamily = 'sans-serif';
  1354.           p.style.fontWeight = size;
  1355.           arr.push(p);
  1356.         }
  1357.       }
  1358.  
  1359.       console.log('number of elzm-font elements', arr.length);
  1360.  
  1361.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1362.  
  1363.       (document.body || document.documentElement).appendChild(efsContainer);
  1364.  
  1365.  
  1366.       console.log('elzm-font elements have been added to the page for rendering.');
  1367.  
  1368.       console.groupEnd();
  1369.  
  1370.     }
  1371.  
  1372.     let isCssAdded = false;
  1373.  
  1374.     function addCssElement() {
  1375.       let s = document.createElement('style');
  1376.       s.id = 'ewRvC';
  1377.       return s;
  1378.     }
  1379.  
  1380.     const addCssManaged = () => {
  1381.       if (!isCssAdded && document.documentElement && document.head) {
  1382.         isCssAdded = true;
  1383.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1384.         if (ENABLE_FONT_PRE_RENDERING) {
  1385.           Promise.resolve().then(addFontPreRendering)
  1386.         }
  1387.       }
  1388.     }
  1389.  
  1390.     return { addCssManaged };
  1391.   })();
  1392.  
  1393.  
  1394.   const { setupStyle } = (() => {
  1395.  
  1396.     const sp7 = Symbol();
  1397.  
  1398.     const proxyHelperFn = (dummy) => ({
  1399.  
  1400.       get(target, prop) {
  1401.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1402.       },
  1403.       set(target, prop, value) {
  1404.         if (!(prop in dummy)) {
  1405.           target[prop] = value;
  1406.         }
  1407.         return true;
  1408.       },
  1409.       has(target, prop) {
  1410.         return (prop in target);
  1411.       },
  1412.       deleteProperty(target, prop) {
  1413.         return true;
  1414.       },
  1415.       ownKeys(target) {
  1416.         return Object.keys(target);
  1417.       },
  1418.       defineProperty(target, key, descriptor) {
  1419.         return Object.defineProperty(target, key, descriptor);
  1420.       },
  1421.       getOwnPropertyDescriptor(target, key) {
  1422.         return Object.getOwnPropertyDescriptor(target, key);
  1423.       },
  1424.  
  1425.     });
  1426.  
  1427.     const setupStyle = (m1, m2) => {
  1428.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1429.  
  1430.       const dummy1v = {
  1431.         transform: '',
  1432.         height: '',
  1433.         minHeight: '',
  1434.         paddingBottom: '',
  1435.         paddingTop: ''
  1436.       };
  1437.  
  1438.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1439.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1440.         dummy1v[k] = dummyStyleFn(k);
  1441.       }
  1442.  
  1443.       const dummy1p = proxyHelperFn(dummy1v);
  1444.       const sp1v = new Proxy(m1.style, dummy1p);
  1445.       const sp2v = new Proxy(m2.style, dummy1p);
  1446.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1447.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1448.       m1.removeAttribute("style");
  1449.       m2.removeAttribute("style");
  1450.  
  1451.     }
  1452.  
  1453.     return { setupStyle };
  1454.  
  1455.   })();
  1456.  
  1457.  
  1458.  
  1459.   function setThumbnails(config) {
  1460.  
  1461.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1462.  
  1463.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1464.  
  1465.  
  1466.       if (thumbnails && thumbnails.length > 0) {
  1467.         if (flag0 > 0 && thumbnails.length > 1) {
  1468.           let pSize = 0;
  1469.           let newThumbnails = [];
  1470.           for (const thumbnail of thumbnails) {
  1471.             if (!thumbnail || !thumbnail.url) continue;
  1472.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1473.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1474.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1475.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1476.               newThumbnails.push(thumbnail);
  1477.               if (imageLinks) imageLinks.add(thumbnail.url);
  1478.             }
  1479.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1480.               pSize = thumbnail.width;
  1481.             }
  1482.           }
  1483.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1484.             baseObject.thumbnails = newThumbnails;
  1485.           } else {
  1486.             newThumbnails.length = 0;
  1487.           }
  1488.           newThumbnails = null;
  1489.         } else {
  1490.           for (const thumbnail of thumbnails) {
  1491.             if (thumbnail && thumbnail.url) {
  1492.               if (imageLinks) imageLinks.add(thumbnail.url);
  1493.             }
  1494.           }
  1495.         }
  1496.       }
  1497.  
  1498.     }
  1499.   }
  1500.  
  1501.   function fixLiveChatItem(item, imageLinks) {
  1502.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1503.     if (liveChatTextMessageRenderer) {
  1504.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1505.       if (messageRuns && messageRuns.length > 0) {
  1506.         for (const run of messageRuns) {
  1507.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1508.           setThumbnails({
  1509.             baseObject: emojiImage,
  1510.             thumbnails: emojiImage.thumbnails,
  1511.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1512.             imageLinks
  1513.           });
  1514.         }
  1515.       }
  1516.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1517.       setThumbnails({
  1518.         baseObject: authorPhoto,
  1519.         thumbnails: authorPhoto.thumbnails,
  1520.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1521.         imageLinks
  1522.       });
  1523.     }
  1524.   }
  1525.  
  1526.  
  1527.  
  1528.   let kptPF = null;
  1529.   const emojiPrefetched = new Set();
  1530.   const authorPhotoPrefetched = new Set();
  1531.  
  1532.   function linker(link, rel, href, _as) {
  1533.     return new Promise(resolve => {
  1534.       if (!link) link = document.createElement('link');
  1535.       link.rel = rel;
  1536.       if (_as) link.setAttribute('as', _as);
  1537.       link.onload = function () {
  1538.         resolve({
  1539.           link: this,
  1540.           success: true
  1541.         })
  1542.         this.remove();
  1543.       };
  1544.       link.onerror = function () {
  1545.         resolve({
  1546.           link: this,
  1547.           success: false
  1548.         });
  1549.         this.remove();
  1550.       };
  1551.       link.href = href;
  1552.       document.head.appendChild(link);
  1553.       link = null;
  1554.     });
  1555.   }
  1556.  
  1557.  
  1558.  
  1559.   const cleanContext = async (win) => {
  1560.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1561.     try {
  1562.       let mx = 16; // MAX TRIAL
  1563.       const frameId = 'vanillajs-iframe-v1';
  1564.       /** @type {HTMLIFrameElement | null} */
  1565.       let frame = document.getElementById(frameId);
  1566.       let removeIframeFn = null;
  1567.       if (!frame) {
  1568.         frame = document.createElement('iframe');
  1569.         frame.id = frameId;
  1570.         const blobURL = typeof webkitCancelAnimationFrame === 'function' ? (frame.src = URL.createObjectURL(new Blob([], { type: 'text/html' }))) : null; // avoid Brave Crash
  1571.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1572.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1573.         n.appendChild(frame);
  1574.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1575.         const root = document.documentElement;
  1576.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1577.         if (blobURL) Promise.resolve().then(() => URL.revokeObjectURL(blobURL));
  1578.  
  1579.         removeIframeFn = (setTimeout) => {
  1580.           const removeIframeOnDocumentReady = (e) => {
  1581.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1582.             win = null;
  1583.             const m = n;
  1584.             n = null;
  1585.             setTimeout(() => m.remove(), 200);
  1586.           }
  1587.           if (document.readyState !== 'loading') {
  1588.             removeIframeOnDocumentReady();
  1589.           } else {
  1590.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1591.           }
  1592.         }
  1593.       }
  1594.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1595.       const fc = frame.contentWindow;
  1596.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1597.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1598.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1599.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1600.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1601.  
  1602.       /** @type {HTMLElement} */
  1603.       const HTMLElementProto = fc.HTMLElement.prototype;
  1604.       /** @type {EventTarget} */
  1605.       const EventTargetProto = fc.EventTarget.prototype;
  1606.       // jsonParseFix = {
  1607.       //   _JSON: fc.JSON, _parse: fc.JSON.parse
  1608.       // }
  1609.       return {
  1610.         ...res,
  1611.         animate: HTMLElementProto.animate,
  1612.         addEventListener: EventTargetProto.addEventListener,
  1613.         removeEventListener: EventTargetProto.removeEventListener
  1614.       };
  1615.     } catch (e) {
  1616.       console.warn(e);
  1617.       return null;
  1618.     }
  1619.   };
  1620.  
  1621.   cleanContext(win).then(__CONTEXT__ => {
  1622.     if (!__CONTEXT__) return null;
  1623.  
  1624.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1625.  
  1626.  
  1627.     let foregroundPromise = null;
  1628.     const foregroundPromiseFn = () => (foregroundPromise = (foregroundPromise || new Promise(resolve => {
  1629.       requestAnimationFrame(() => {
  1630.         foregroundPromise = null;
  1631.         resolve();
  1632.       });
  1633.     })));
  1634.  
  1635.     let playerState = null;
  1636.     let _playerState = null;
  1637.     let lastPlayerProgress = null;
  1638.     let relayCount = 0;
  1639.     let playerEventsByIframeRelay = false;
  1640.     let isPlayProgressTriggered = false;
  1641.     let waitForInitialDataCompletion = 0;
  1642.  
  1643.  
  1644.  
  1645.     let aeConstructor = null;
  1646.  
  1647.     // << __openedChanged82 >>
  1648.     let currentMenuPivotWR = null;
  1649.  
  1650.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1651.     const beforeParticipantsMap = new WeakMap();
  1652.     // << end >>
  1653.  
  1654.  
  1655.  
  1656.     // << if onRegistryReadyForDOMOperations >>
  1657.  
  1658.     let dt0 = Date.now() - 2000;
  1659.     const dateNow = () => Date.now() - dt0;
  1660.     // let lastScroll = 0;
  1661.     // let lastLShow = 0;
  1662.     let lastWheel = 0;
  1663.     let lastMouseDown = 0;
  1664.     let lastMouseUp = 0;
  1665.     let currentMouseDown = false;
  1666.     let lastTouchDown = 0;
  1667.     let lastTouchUp = 0;
  1668.     let currentTouchDown = false;
  1669.     let lastUserInteraction = 0;
  1670.  
  1671.     let scrollChatFn = null;
  1672.  
  1673.     let skipDontRender = true; // true first; false by flushActiveItems_
  1674.     let allowDontRender = null;
  1675.  
  1676.     // ---- #items mutation ----
  1677.     let sk35zResolveFn = null;
  1678.     let firstList = true;
  1679.  
  1680.     // << end >>
  1681.  
  1682.     class RAFHub {
  1683.       constructor() {
  1684.         /** @type {number} */
  1685.         this.startAt = 8170;
  1686.         /** @type {number} */
  1687.         this.counter = 0;
  1688.         /** @type {number} */
  1689.         this.rid = 0;
  1690.         /** @type {Map<number, FrameRequestCallback>} */
  1691.         this.funcs = new Map();
  1692.         const funcs = this.funcs;
  1693.         /** @type {FrameRequestCallback} */
  1694.         this.bCallback = this.mCallback.bind(this);
  1695.         this.pClear = () => funcs.clear();
  1696.         this.keepRAF = false;
  1697.       }
  1698.       /** @param {DOMHighResTimeStamp} highResTime */
  1699.       mCallback(highResTime) {
  1700.         this.rid = 0;
  1701.         Promise.resolve().then(this.pClear);
  1702.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1703.       }
  1704.       /** @param {FrameRequestCallback} f */
  1705.       request(f) {
  1706.         if (this.counter > 1e9) this.counter = 9;
  1707.         let cid = this.startAt + (++this.counter);
  1708.         this.funcs.set(cid, f);
  1709.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1710.         return cid;
  1711.       }
  1712.       /** @param {number} cid */
  1713.       cancel(cid) {
  1714.         cid = +cid;
  1715.         if (cid > 0) {
  1716.           if (cid <= this.startAt) {
  1717.             return cancelAnimationFrame(cid);
  1718.           }
  1719.           if (this.rid > 0) {
  1720.             this.funcs.delete(cid);
  1721.             if (this.funcs.size === 0 && !this.keepRAF) {
  1722.               cancelAnimationFrame(this.rid);
  1723.               this.rid = 0;
  1724.             }
  1725.           }
  1726.         }
  1727.       }
  1728.     }
  1729.  
  1730.     function basePrefetching() {
  1731.  
  1732.       new Promise(resolve => {
  1733.  
  1734.         if (document.readyState !== 'loading') {
  1735.           resolve();
  1736.         } else {
  1737.           win.addEventListener("DOMContentLoaded", resolve, false);
  1738.         }
  1739.  
  1740.       }).then(() => {
  1741.         const hostL1 = [
  1742.           'https://www.youtube.com', 'https://googlevideo.com',
  1743.           'https://googleapis.com', 'https://accounts.youtube.com',
  1744.           'https://www.gstatic.com', 'https://ggpht.com',
  1745.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1746.         ];
  1747.  
  1748.         const hostL2 = [
  1749.           'https://youtube.com',
  1750.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1751.         ];
  1752.  
  1753.         let link = null;
  1754.  
  1755.         function kn() {
  1756.  
  1757.           link = document.createElement('link');
  1758.           if (link.relList && link.relList.supports) {
  1759.             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)
  1760.           } else {
  1761.             kptPF = 0;
  1762.           }
  1763.  
  1764.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1765.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1766.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1767.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1768.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1769.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1770.           console.groupEnd();
  1771.  
  1772.         }
  1773.  
  1774.         for (const h of hostL1) {
  1775.  
  1776.           if (kptPF === null) kn();
  1777.           if (ENABLE_BASE_PREFETCHING) {
  1778.             // if (kptPF & 1) {
  1779.             //   linker(link, 'dns-prefetch', h);
  1780.             //   link = null;
  1781.             // }
  1782.             if (kptPF & 2) {
  1783.               linker(link, 'preconnect', h);
  1784.               link = null;
  1785.             }
  1786.           }
  1787.         }
  1788.  
  1789.         for (const h of hostL2) {
  1790.           if (kptPF === null) kn();
  1791.           if (ENABLE_BASE_PREFETCHING) {
  1792.             if (kptPF & 1) {
  1793.               linker(link, 'dns-prefetch', h);
  1794.               link = null;
  1795.             }
  1796.           }
  1797.         }
  1798.  
  1799.       })
  1800.  
  1801.  
  1802.     }
  1803.  
  1804.     if (DO_LINK_PREFETCH) basePrefetching();
  1805.  
  1806.     const { notifyPath7081 } = (() => {
  1807.       // DO_PARTICIPANT_LIST_HACKS
  1808.  
  1809.       const mutexParticipants = new Mutex();
  1810.  
  1811.       let uvid = 0;
  1812.       let r95dm = 0;
  1813.       let c95dm = -1;
  1814.  
  1815.       const foundMap = (base, content) => {
  1816.         /*
  1817.           let lastSearch = 0;
  1818.           let founds = base.map(baseEntry => {
  1819.             let search = content.indexOf(baseEntry, lastSearch);
  1820.             if (search < 0) return false;
  1821.             lastSearch = search + 1;
  1822.             return true;
  1823.           });
  1824.           return founds;
  1825.         */
  1826.         const contentSet = new Set(content);
  1827.         return base.map(baseEntry => contentSet.has(baseEntry));
  1828.  
  1829.       }
  1830.  
  1831.  
  1832.  
  1833.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1834.  
  1835.         const handler1 = {
  1836.           get(target, prop, receiver) {
  1837.             if (prop === 'object') {
  1838.               return participants; // avoid memory leakage
  1839.             }
  1840.             if (prop === 'type') {
  1841.               return 'splice';
  1842.             }
  1843.             return target[prop];
  1844.           }
  1845.         };
  1846.         const releaser = () => {
  1847.           participants = null;
  1848.         }
  1849.  
  1850.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1851.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1852.  
  1853.         let indexSplices = [];
  1854.         let contentUpdates = [];
  1855.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1856.           if (beforeParticipants[i] === participants[j]) {
  1857.             i++; j++;
  1858.           } else if (idsBefore[i] === idsAfter[j]) {
  1859.             // content changed
  1860.             contentUpdates.push({ indexI: i, indexJ: j })
  1861.             i++; j++;
  1862.           } else {
  1863.             let addedCount = 0;
  1864.             for (let q = j; q < foundsForAfter.length; q++) {
  1865.               if (foundsForAfter[q] === false) addedCount++;
  1866.               else break;
  1867.             }
  1868.             let removedCount = 0;
  1869.             for (let q = i; q < foundsForBefore.length; q++) {
  1870.               if (foundsForBefore[q] === false) removedCount++;
  1871.               else break;
  1872.             }
  1873.             if (!addedCount && !removedCount) {
  1874.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1875.             }
  1876.             indexSplices.push(new Proxy({
  1877.               index: j,
  1878.               addedCount: addedCount,
  1879.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1880.             }, handler1));
  1881.             i += removedCount;
  1882.             j += addedCount;
  1883.           }
  1884.         }
  1885.         foundsForBefore = null;
  1886.         foundsForAfter = null;
  1887.         idsBefore = null;
  1888.         idsAfter = null;
  1889.         beforeParticipants = null;
  1890.         return { indexSplices, contentUpdates, releaser };
  1891.  
  1892.       }
  1893.  
  1894.       /*
  1895.  
  1896.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1897.  
  1898.       VM63631:1 Error
  1899.       at customElements.get.notifyPath (<anonymous>:1:122)
  1900.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1901.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1902.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1903.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1904.       at ju (live_chat_polymer.js:1674:217)
  1905.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1906.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1907.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1908.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1909.  
  1910.       */
  1911.  
  1912.       function convertToIds(participants) {
  1913.         return participants.map(participant => {
  1914.           if (!participant || typeof participant !== 'object') {
  1915.             console.warn('Error(0xFA41): convertToIds', participant);
  1916.             return participant; // just in case
  1917.           }
  1918.           let keys = Object.keys(participant);
  1919.           // liveChatTextMessageRenderer
  1920.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1921.           // liveChatPaidMessageRenderer
  1922.           /*
  1923.  
  1924.             'yt-live-chat-participant-renderer' utilizes the following:
  1925.             authorName.simpleText: string
  1926.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1927.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1928.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1929.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1930.  
  1931.           */
  1932.           if (keys.length !== 1) {
  1933.             console.warn('Error(0xFA42): convertToIds', participant);
  1934.             return participant; // just in case
  1935.           }
  1936.           let key = keys[0];
  1937.           let renderer = (participant[key] || 0);
  1938.           let authorName = (renderer.authorName || 0);
  1939.           let text = `${authorName.simpleText || authorName.text}`
  1940.           let res = participant; // fallback if it is not a vaild entry
  1941.           if (typeof text !== 'string') {
  1942.             console.warn('Error(0xFA53): convertToIds', participant);
  1943.           } else {
  1944.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1945.             if (text.length > 1) res = text;
  1946.           }
  1947.           return res;
  1948.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1949.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1950.         });
  1951.       }
  1952.  
  1953.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1954.         // just update when content is changed.
  1955.         if (p1.authorName !== p2.authorName) return true;
  1956.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1957.         if (p1.authorBadges !== p2.authorBadges) return true;
  1958.         return false;
  1959.       } : (p1, p2) => {
  1960.         // keep integrity all the time.
  1961.         return p1 !== p2; // always true
  1962.       }
  1963.  
  1964.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1965.  
  1966.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1967.           if (path !== "participantsManager.participants") {
  1968.             return this.__notifyPath5036__.apply(this, arguments);
  1969.           }
  1970.           if (c95dm === r95dm) return;
  1971.         } else {
  1972.           const stack = new Error().stack;
  1973.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1974.             return this.__notifyPath5036__.apply(this, arguments);
  1975.           }
  1976.         }
  1977.  
  1978.         if (uvid > 1e8) uvid = uvid % 100;
  1979.         let tid = ++uvid;
  1980.  
  1981.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  1982.         mutexParticipants.lockWith(lockResolve => {
  1983.  
  1984.           const participants00 = cnt.participantsManager.participants;
  1985.  
  1986.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1987.             lockResolve();
  1988.             return;
  1989.           }
  1990.  
  1991.           let doUpdate = false;
  1992.  
  1993.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1994.  
  1995.             if (!participants00.r94dm) {
  1996.               participants00.r94dm = 1;
  1997.               if (++r95dm > 1e9) r95dm = 9;
  1998.               participants00.push = function () {
  1999.                 if (++r95dm > 1e9) r95dm = 9;
  2000.                 return Array.prototype.push.apply(this, arguments);
  2001.               }
  2002.               participants00.pop = function () {
  2003.                 if (++r95dm > 1e9) r95dm = 9;
  2004.                 return Array.prototype.pop.apply(this, arguments);
  2005.               }
  2006.               participants00.shift = function () {
  2007.                 if (++r95dm > 1e9) r95dm = 9;
  2008.                 return Array.prototype.shift.apply(this, arguments);
  2009.               }
  2010.               participants00.unshift = function () {
  2011.                 if (++r95dm > 1e9) r95dm = 9;
  2012.                 return Array.prototype.unshift.apply(this, arguments);
  2013.               }
  2014.               participants00.splice = function () {
  2015.                 if (++r95dm > 1e9) r95dm = 9;
  2016.                 return Array.prototype.splice.apply(this, arguments);
  2017.               }
  2018.               participants00.sort = function () {
  2019.                 if (++r95dm > 1e9) r95dm = 9;
  2020.                 return Array.prototype.sort.apply(this, arguments);
  2021.               }
  2022.               participants00.reverse = function () {
  2023.                 if (++r95dm > 1e9) r95dm = 9;
  2024.                 return Array.prototype.reverse.apply(this, arguments);
  2025.               }
  2026.             }
  2027.  
  2028.             if (c95dm !== r95dm) {
  2029.               c95dm = r95dm;
  2030.               doUpdate = true;
  2031.             }
  2032.  
  2033.           } else {
  2034.             doUpdate = true;
  2035.           }
  2036.  
  2037.           if (!doUpdate) {
  2038.             lockResolve();
  2039.             return;
  2040.           }
  2041.  
  2042.           const participants = participants00.slice(0);
  2043.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  2044.           beforeParticipantsMap.set(cnt, participants);
  2045.  
  2046.           const resPromise = (async () => {
  2047.  
  2048.             if (beforeParticipants.length === 0) {
  2049.               // not error
  2050.               return 0;
  2051.             }
  2052.  
  2053.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  2054.  
  2055.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  2056.             if (beforeParticipants.length !== countOfElements) {
  2057.               // there is somewrong for the cache. - sometimes happen
  2058.               return 0;
  2059.             }
  2060.  
  2061.             const idsBefore = convertToIds(beforeParticipants);
  2062.             const idsAfter = convertToIds(participants);
  2063.  
  2064.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  2065.  
  2066.             let res = 1; // default 1 for no update
  2067.  
  2068.             if (indexSplices.length >= 1) {
  2069.  
  2070.  
  2071.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  2072.               // let p1 = indexSplices[0].removed;
  2073.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  2074.  
  2075.               /* folllow
  2076.                   a.notifyPath(c + ".splices", d);
  2077.                   a.notifyPath(c + ".length", b.length);
  2078.               */
  2079.               // stampDomArraySplices_
  2080.  
  2081.  
  2082.               await new Promise(resolve => {
  2083.                 cnt.resolveForDOMRendering781 = resolve;
  2084.  
  2085.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  2086.                   indexSplices
  2087.                 });
  2088.                 indexSplices = null;
  2089.                 releaser();
  2090.                 releaser = null;
  2091.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  2092.                   participants.length
  2093.                 );
  2094.  
  2095.               });
  2096.  
  2097.               await Promise.resolve(0); // play safe for the change of 'length'
  2098.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  2099.  
  2100.               let wrongSize = participants.length !== countOfElements
  2101.               if (wrongSize) {
  2102.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  2103.                 return 0;
  2104.               }
  2105.  
  2106.               res = 2 | 4;
  2107.  
  2108.             } else {
  2109.  
  2110.               indexSplices = null;
  2111.               releaser();
  2112.               releaser = null;
  2113.  
  2114.               if (participants.length !== countOfElements) {
  2115.                 // other unhandled cases
  2116.                 return 0;
  2117.               }
  2118.  
  2119.             }
  2120.  
  2121.             // participants.length === countOfElements before contentUpdates
  2122.             if (contentUpdates.length >= 1) {
  2123.               for (const contentUpdate of contentUpdates) {
  2124.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  2125.                 if (isChanged) {
  2126.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  2127.                   res |= 4 | 8;
  2128.                 }
  2129.               }
  2130.             }
  2131.             contentUpdates = null;
  2132.  
  2133.             return res;
  2134.  
  2135.  
  2136.           })();
  2137.  
  2138.  
  2139.           resPromise.then(resValue => {
  2140.  
  2141.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  2142.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  2143.             if (resValue === 0) {
  2144.               new Promise(resolve => {
  2145.                 cnt.resolveForDOMRendering781 = resolve;
  2146.                 isLogRequired && console.log("Full Refresh begins");
  2147.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  2148.               }).then(() => {
  2149.                 isLogRequired && console.log("Full Refresh ends");
  2150.                 console.groupEnd();
  2151.               }).then(lockResolve);
  2152.               return;
  2153.             }
  2154.  
  2155.             const delayLockResolve = (resValue & 4) === 4;
  2156.  
  2157.             if (delayLockResolve) {
  2158.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  2159.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  2160.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  2161.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  2162.               isLogRequired && console.groupEnd();
  2163.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2164.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2165.               requestAnimationFrame(lockResolve);
  2166.             } else {
  2167.               lockResolve();
  2168.             }
  2169.  
  2170.           });
  2171.  
  2172.         });
  2173.  
  2174.       }
  2175.  
  2176.       return { notifyPath7081 };
  2177.  
  2178.     })();
  2179.  
  2180.     const whenDefinedMultiple = async (tags) => {
  2181.  
  2182.       const sTags = [...new Set(tags)];
  2183.       const len = sTags.length;
  2184.  
  2185.       const pTags = new Array(len);
  2186.       for (let i = 0; i < len; i++) {
  2187.         pTags[i] = customElements.whenDefined(sTags[i]);
  2188.       }
  2189.  
  2190.       await Promise.all(pTags);
  2191.       pTags.length = 0;
  2192.  
  2193.       return sTags;
  2194.  
  2195.     }
  2196.  
  2197.     const onRegistryReadyForDataManipulation = () => {
  2198.  
  2199.       function dummy5035(a, b, c) { }
  2200.       function dummy411(a, b, c) { }
  2201.  
  2202.  
  2203.  
  2204.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2205.  
  2206.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2207.  
  2208.         const tag = "yt-live-chat-participant-list-renderer";
  2209.         const cProto = getProto(document.createElement(tag));
  2210.         if (!cProto || typeof cProto.attached !== 'function') {
  2211.           // for _registered, proto.attached shall exist when the element is defined.
  2212.           // for controller extraction, attached shall exist when instance creates.
  2213.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2214.           return;
  2215.         }
  2216.  
  2217.  
  2218.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2219.  
  2220.         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'];
  2221.         const fgs = {};
  2222.         for (const key of fgsArr) fgs[key] = undefined;
  2223.  
  2224.         try {
  2225.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2226.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2227.         } catch (e) { }
  2228.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2229.  
  2230.         const canDoReplacement = (() => {
  2231.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2232.             console.warn('YouTube Live Chat Tamer is running.');
  2233.             return;
  2234.           }
  2235.  
  2236.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2237.             console.warn('YouTube Live Chat Tamer is running.');
  2238.             return;
  2239.           }
  2240.  
  2241.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2242.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2243.  
  2244.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2245.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2246.             return;
  2247.           }
  2248.  
  2249.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2250.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2251.             return;
  2252.           }
  2253.  
  2254.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2255.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2256.             return;
  2257.           }
  2258.           return true;
  2259.         })();
  2260.  
  2261.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2262.  
  2263.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2264.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2265.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2266.           const s = fiRSCB.split('.');
  2267.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2268.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2269.           } else {
  2270.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2271.           }
  2272.         } else {
  2273.           console.log("flushRenderStamperComponentBindings_ - not found");
  2274.         }
  2275.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2276.  
  2277.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2278.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2279.           cProto.flushRenderStamperComponentBindings_ = function () {
  2280.             // console.log('flushRenderStamperComponentBindings_')
  2281.             this.flushRenderStamperComponentBindings66_();
  2282.             if (this.resolveForDOMRendering781) {
  2283.               this.resolveForDOMRendering781();
  2284.               this.resolveForDOMRendering781 = null;
  2285.             }
  2286.           };
  2287.         }
  2288.  
  2289.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2290.           const container = ((this || 0).$ || 0).participants;
  2291.           if (!container) return 0;
  2292.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2293.         }
  2294.  
  2295.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2296.  
  2297.         cProto.__attached412__ = cProto.attached;
  2298.         const fpPList = function (hostElement) {
  2299.           const cnt = hostElement.inst || hostElement;
  2300.           if (beforeParticipantsMap.has(cnt)) return;
  2301.           hostElement.classList.add('n9fJ3');
  2302.  
  2303.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2304.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2305.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2306.             return;
  2307.           }
  2308.  
  2309.           groupCollapsed("Participant List attached", "");
  2310.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2311.           //   console.log(123, 'appendChild');
  2312.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2313.           // }
  2314.  
  2315.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2316.           //   console.log(123, 'insertBefore');
  2317.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2318.           // }
  2319.  
  2320.           cnt.__notifyPath5036__ = cnt.notifyPath
  2321.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2322.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2323.           console.log(`initial number of participants: ${participants.length}`);
  2324.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2325.           beforeParticipantsMap.set(cnt, newParticipants);
  2326.           cnt.notifyPath = notifyPath7081;
  2327.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2328.           console.groupEnd();
  2329.         }
  2330.         cProto.attached = function () {
  2331.           fpPList(this.hostElement || this);
  2332.           this.__attached412__.apply(this, arguments);
  2333.         };
  2334.  
  2335.  
  2336.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2337.  
  2338.           /** @type {boolean | (()=>boolean)} */
  2339.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2340.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2341.  
  2342.             let lastMessageDate = 0;
  2343.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2344.  
  2345.             cProto.stampDomArray_ = function (...args) {
  2346.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2347.                 if (typeof toUseMaintainStableList === 'function') {
  2348.                   toUseMaintainStableList = toUseMaintainStableList();
  2349.                 }
  2350.                 args[5] = toUseMaintainStableList;
  2351.                 let currentDate = Date.now();
  2352.                 if (currentDate - lastMessageDate > 440) {
  2353.                   lastMessageDate = currentDate;
  2354.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2355.                 }
  2356.               }
  2357.               return this.stampDomArray66_.apply(this, args);
  2358.             }
  2359.  
  2360.             cProto.stampDomArray_.nIegT = 1;
  2361.  
  2362.           }
  2363.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2364.         } else {
  2365.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2366.         }
  2367.  
  2368.         console.groupEnd();
  2369.  
  2370.         if (onPageElements.length >= 1) {
  2371.           for (const s of onPageElements) {
  2372.             if ((s.inst || s).isAttached === true) {
  2373.               fpPList(s);
  2374.             }
  2375.           }
  2376.         }
  2377.  
  2378.       }).catch(console.warn);
  2379.  
  2380.     };
  2381.  
  2382.     if (DO_PARTICIPANT_LIST_HACKS) {
  2383.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2384.     }
  2385.  
  2386.  
  2387.  
  2388.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2389.  
  2390.  
  2391.  
  2392.  
  2393.     const bnForDelayChatOccurrence = () => {
  2394.  
  2395.       document.addEventListener('animationstart', (evt) => {
  2396.  
  2397.         if (evt.animationName === 'dontRenderAnimation') {
  2398.           evt.target.classList.remove('dont-render');
  2399.           if (scrollChatFn) scrollChatFn();
  2400.         }
  2401.  
  2402.       }, true);
  2403.  
  2404.       const f = (elm) => {
  2405.         if (elm && elm.nodeType === 1) {
  2406.           if (!skipDontRender && allowDontRender === true) {
  2407.             // innerTextFixFn();
  2408.             elm.classList.add('dont-render');
  2409.           }
  2410.         }
  2411.       }
  2412.  
  2413.       Node.prototype.__appendChild931__ = function (a) {
  2414.         a = dr(a);
  2415.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2416.           if (a && a.nodeType === 1) f(a);
  2417.           else if (a instanceof DocumentFragment) {
  2418.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2419.               f(n);
  2420.             }
  2421.           }
  2422.         }
  2423.       }
  2424.  
  2425.       Node.prototype.__appendChild932__ = function () {
  2426.         this.__appendChild931__.apply(this, arguments);
  2427.         return Node.prototype.appendChild.apply(this, arguments);
  2428.       }
  2429.  
  2430.  
  2431.     };
  2432.  
  2433.     const watchUserCSS = () => {
  2434.  
  2435.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2436.  
  2437.       const getElemFromWR = (nr) => {
  2438.         const n = kRef(nr);
  2439.         if (n && n.isConnected) return n;
  2440.         return null;
  2441.       }
  2442.  
  2443.       const clearContentVisibilitySizing = () => {
  2444.         Promise.resolve().then(() => {
  2445.  
  2446.           const e = document.querySelector('#show-more[disabled]');
  2447.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2448.  
  2449.           let lastVisibleItemWR = null;
  2450.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2451.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2452.             elm.setAttribute('wSr93', '');
  2453.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2454.           }
  2455.           requestAnimationFrame(() => {
  2456.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2457.             if (btnShowMore) btnShowMore.click();
  2458.             else {
  2459.               // would not work if switch it frequently
  2460.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2461.               if (lastVisibleItem) {
  2462.  
  2463.                 Promise.resolve()
  2464.                   .then(() => lastVisibleItem.scrollIntoView())
  2465.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2466.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2467.                   .catch(e => { }) // break the chain when method not callable
  2468.  
  2469.               }
  2470.             }
  2471.           });
  2472.  
  2473.         });
  2474.  
  2475.       }
  2476.  
  2477.       const mutObserver = new MutationObserver((mutations) => {
  2478.         for (const mutation of mutations) {
  2479.           if ((mutation.addedNodes || 0).length >= 1) {
  2480.             for (const addedNode of mutation.addedNodes) {
  2481.               if (addedNode.nodeName === 'STYLE') {
  2482.                 clearContentVisibilitySizing();
  2483.                 return;
  2484.               }
  2485.             }
  2486.           }
  2487.           if ((mutation.removedNodes || 0).length >= 1) {
  2488.             for (const removedNode of mutation.removedNodes) {
  2489.               if (removedNode.nodeName === 'STYLE') {
  2490.                 clearContentVisibilitySizing();
  2491.                 return;
  2492.               }
  2493.             }
  2494.           }
  2495.         }
  2496.       });
  2497.  
  2498.       mutObserver.observe(document.documentElement, {
  2499.         childList: true,
  2500.         subtree: false
  2501.       });
  2502.       mutObserver.observe(document.head, {
  2503.         childList: true,
  2504.         subtree: false
  2505.       });
  2506.       mutObserver.observe(document.body, {
  2507.         childList: true,
  2508.         subtree: false
  2509.       });
  2510.  
  2511.     }
  2512.  
  2513.  
  2514.     class WillChangeController {
  2515.       constructor(itemScroller, willChangeValue) {
  2516.         this.element = itemScroller;
  2517.         this.counter = 0;
  2518.         this.active = false;
  2519.         this.willChangeValue = willChangeValue;
  2520.       }
  2521.  
  2522.       beforeOper() {
  2523.         if (!this.active) {
  2524.           this.active = true;
  2525.           this.element.style.willChange = this.willChangeValue;
  2526.         }
  2527.         this.counter++;
  2528.       }
  2529.  
  2530.       afterOper() {
  2531.         const c = this.counter;
  2532.         requestAnimationFrame(() => {
  2533.           if (c === this.counter) {
  2534.             this.active = false;
  2535.             this.element.style.willChange = '';
  2536.           }
  2537.         });
  2538.       }
  2539.  
  2540.       release() {
  2541.         const element = this.element;
  2542.         this.element = null;
  2543.         this.counter = 1e16;
  2544.         this.active = false;
  2545.         try {
  2546.           element.style.willChange = '';
  2547.         } catch (e) { }
  2548.       }
  2549.  
  2550.     }
  2551.  
  2552.  
  2553.     const skzData = (skz) => skz.data = {
  2554.       "message": {
  2555.         "runs": [
  2556.           {
  2557.             "text": "em2o"
  2558.           },
  2559.           {
  2560.             "emoji": {
  2561.               "emojiId": "cm35z",
  2562.               "shortcuts": [
  2563.                 ":_s:",
  2564.                 ":s:"
  2565.               ],
  2566.               "searchTerms": [
  2567.                 "_s",
  2568.                 "s"
  2569.               ],
  2570.               "image": {
  2571.                 "thumbnails": [
  2572.                   {
  2573.                     "url": dummyImgURL,
  2574.                     "width": 48,
  2575.                     "height": 48
  2576.                   }
  2577.                 ],
  2578.                 "accessibility": {
  2579.                   "accessibilityData": {
  2580.                     "label": "s"
  2581.                   }
  2582.                 }
  2583.               },
  2584.               "isCustomEmoji": true
  2585.             }
  2586.           },
  2587.           {
  2588.             "text": "ji"
  2589.           }
  2590.         ]
  2591.       },
  2592.       "authorName": {
  2593.         "simpleText": "N"
  2594.       },
  2595.       "authorPhoto": {
  2596.         "thumbnails": [
  2597.           {
  2598.             "url": dummyImgURL,
  2599.             "width": 64,
  2600.             "height": 64
  2601.           }
  2602.         ]
  2603.       },
  2604.       "contextMenuEndpoint": {
  2605.         "commandMetadata": {
  2606.           "webCommandMetadata": {
  2607.             "ignoreNavigation": true
  2608.           }
  2609.         },
  2610.         "liveChatItemContextMenuEndpoint": {
  2611.           "params": "123=="
  2612.         }
  2613.       },
  2614.       "id": "sk35z",
  2615.       "timestampUsec": "1232302352350000",
  2616.       "authorBadges": [
  2617.         {
  2618.           "liveChatAuthorBadgeRenderer": {
  2619.             "customThumbnail": {
  2620.               "thumbnails": [
  2621.                 {
  2622.                   "url": dummyImgURL,
  2623.                   "width": 16,
  2624.                   "height": 16
  2625.                 },
  2626.                 {
  2627.                   "url": dummyImgURL,
  2628.                   "width": 32,
  2629.                   "height": 32
  2630.                 }
  2631.               ]
  2632.             },
  2633.             "tooltip": "T",
  2634.             "accessibility": {
  2635.               "accessibilityData": {
  2636.                 "label": "E"
  2637.               }
  2638.             }
  2639.           }
  2640.         }
  2641.       ],
  2642.       "authorExternalChannelId": "A",
  2643.       "contextMenuAccessibility": {
  2644.         "accessibilityData": {
  2645.           "label": "E"
  2646.         }
  2647.       },
  2648.       "timestampText": {
  2649.         "simpleText": "0:43"
  2650.       }
  2651.     };
  2652.  
  2653.  
  2654.  
  2655.     const { lcRendererElm, visObserver } = (() => {
  2656.  
  2657.  
  2658.  
  2659.       let lcRendererWR = null;
  2660.  
  2661.       const lcRendererElm = () => {
  2662.         let lcRenderer = kRef(lcRendererWR);
  2663.         if (!lcRenderer || !lcRenderer.isConnected) {
  2664.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2665.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2666.         }
  2667.         return lcRenderer;
  2668.       };
  2669.  
  2670.  
  2671.       let hasFirstShowMore = false;
  2672.  
  2673.       const visObserverFn = (entry) => {
  2674.  
  2675.         const target = entry.target;
  2676.         if (!target) return;
  2677.         // if(target.classList.contains('dont-render')) return;
  2678.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2679.         // const h = entry.boundingClientRect.height;
  2680.         /*
  2681.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2682.             // e.g. under fullscreen. the element created but not rendered.
  2683.             target.setAttribute('wSr93', '');
  2684.             return;
  2685.         }
  2686.         */
  2687.         if (isVisible) {
  2688.           // target.style.setProperty('--wsr94', h + 'px');
  2689.           target.setAttribute('wSr93', 'visible');
  2690.           if (nNextElem(target) === null) {
  2691.  
  2692.             // firstVisibleItemDetected = true;
  2693.             /*
  2694.               if (dateNow() - lastScroll < 80) {
  2695.                   lastLShow = 0;
  2696.                   lastScroll = 0;
  2697.                   Promise.resolve().then(clickShowMore);
  2698.               } else {
  2699.                   lastLShow = dateNow();
  2700.               }
  2701.               */
  2702.             // lastLShow = dateNow();
  2703.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2704.             // implement inside visObserver to ensure there is sufficient delay
  2705.             hasFirstShowMore = true;
  2706.             requestAnimationFrame(() => {
  2707.               // foreground page
  2708.               // page visibly ready -> load the latest comments at initial loading
  2709.               const lcRenderer = lcRendererElm();
  2710.               if (lcRenderer) {
  2711.                 (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2712.               }
  2713.             });
  2714.           }
  2715.         }
  2716.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2717.  
  2718.           // target.style.setProperty('--wsr94', h + 'px');
  2719.           target.setAttribute('wSr93', 'hidden');
  2720.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2721.  
  2722.       }
  2723.  
  2724.  
  2725.  
  2726.       const visObserver = new IntersectionObserver((entries) => {
  2727.  
  2728.         for (const entry of entries) {
  2729.  
  2730.           Promise.resolve(entry).then(visObserverFn);
  2731.  
  2732.         }
  2733.  
  2734.       }, {
  2735.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2736.         rootMargin: "0px",
  2737.         threshold: [0.05, 0.95],
  2738.       });
  2739.  
  2740.  
  2741.       return { lcRendererElm, visObserver }
  2742.  
  2743.  
  2744.     })();
  2745.  
  2746.     const { setupMutObserver } = (() => {
  2747.  
  2748.       const mutFn = (items) => {
  2749.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2750.           if (node.hasAttribute('wSr93')) break;
  2751.           node.setAttribute('wSr93', '');
  2752.           visObserver.observe(node);
  2753.         }
  2754.       }
  2755.  
  2756.       const mutObserver = new MutationObserver((mutations) => {
  2757.         const items = (mutations[0] || 0).target;
  2758.         if (!items) return;
  2759.         if (sk35zResolveFn) {
  2760.           sk35zResolveFn();
  2761.           sk35zResolveFn = null;
  2762.         }
  2763.         mutFn(items);
  2764.       });
  2765.  
  2766.       const setupMutObserver = (m2) => {
  2767.         scrollChatFn = null;
  2768.         mutObserver.disconnect();
  2769.         mutObserver.takeRecords();
  2770.         if (m2) {
  2771.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2772.           if (typeof m2.__appendChild932__ === 'function') {
  2773.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2774.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2775.           }
  2776.           mutObserver.observe(m2, {
  2777.             childList: true,
  2778.             subtree: false
  2779.           });
  2780.           mutFn(m2);
  2781.  
  2782.           const isFirstList = firstList;
  2783.           firstList = false;
  2784.  
  2785.           if (ENABLE_OVERFLOW_ANCHOR) {
  2786.  
  2787.             let items = m2;
  2788.             let addedAnchor = false;
  2789.             if (items) {
  2790.               if (items.nextElementSibling === null) {
  2791.                 items.classList.add('no-anchor');
  2792.                 addedAnchor = true;
  2793.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2794.               }
  2795.             }
  2796.  
  2797.  
  2798.  
  2799.             if (addedAnchor) {
  2800.               nodeParent(m2).classList.add('no-anchor'); // required
  2801.             }
  2802.  
  2803.           }
  2804.  
  2805.           // let div = document.createElement('div');
  2806.           // div.id = 'qwcc';
  2807.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2808.           // bufferRegion =div;
  2809.  
  2810.           // buffObserver.takeRecords();
  2811.           // buffObserver.disconnect();
  2812.           // buffObserver.observe(div,  {
  2813.           //     childList: true,
  2814.           //     subtree: false
  2815.           // })
  2816.  
  2817.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2818.  
  2819.             promiseForCustomYtElementsReady.then(() => {
  2820.  
  2821.               customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2822.  
  2823.  
  2824.  
  2825.  
  2826.                 setTimeout(() => {
  2827.  
  2828.                   /** @type {HTMLTemplateElement} */
  2829.                   let skz = document.createElement('yt-live-chat-text-message-renderer');
  2830.  
  2831.                   let cz1 = null;
  2832.  
  2833.                   if (skz && 'data' in skz && 'attached' in skz) {
  2834.  
  2835.                     const deferredZy1 = new Promise(resolve => {
  2836.  
  2837.                       skz.attached = function () {
  2838.                         cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2839.                         resolve(skz.textContent);
  2840.                       }
  2841.                       skz.detached = function () {
  2842.  
  2843.                       }
  2844.  
  2845.                     });
  2846.                     skz.id = 'sk35z';
  2847.                     skzData(skz);
  2848.  
  2849.  
  2850.                     sk35zResolveFn = null;
  2851.                     const deferredMutation = new Promise(resolve => {
  2852.                       sk35zResolveFn = resolve;
  2853.                       HTMLElement.prototype.appendChild.call(m2, skz);
  2854.                     });
  2855.  
  2856.                     Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2857.                       const [zy1, _] = res;
  2858.                       function fn() {
  2859.                         const zy2 = skz.textContent;
  2860.                         const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2861.                         if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2862.                           allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2863.                         }
  2864.                         if (allowDontRender === false) {
  2865.  
  2866.                           console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2867.                             "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2868.                             "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2869.                           );
  2870.  
  2871.                           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');
  2872.  
  2873.                           console.groupEnd();
  2874.                         } else if (allowDontRender === true) {
  2875.                           return true;
  2876.                         }
  2877.                       }
  2878.                       await new Promise(r => setTimeout(r, 1));
  2879.                       if (fn()) {
  2880.                         await new Promise(r => requestAnimationFrame(r));
  2881.                         if (fn()) {
  2882.                           skz.remove();
  2883.                           skz.textContent = '';
  2884.                           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2885.                         }
  2886.                       }
  2887.                     });
  2888.  
  2889.                   }
  2890.  
  2891.                 }, 1);
  2892.  
  2893.               }).catch(console.warn);
  2894.  
  2895.             })
  2896.  
  2897.           }
  2898.  
  2899.  
  2900.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2901.  
  2902.             (() => {
  2903.  
  2904.               const tag = 'yt-iframed-player-events-relay'
  2905.               const dummy = document.createElement(tag);
  2906.  
  2907.               const cProto = getProto(dummy);
  2908.               if (!cProto || !cProto.handlePostMessage_) {
  2909.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2910.                 return;
  2911.               }
  2912.  
  2913.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2914.  
  2915.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2916.  
  2917.                 cProto.handlePostMessage67_ = function (a) {
  2918.  
  2919.                   const da = a.data;
  2920.  
  2921.  
  2922.  
  2923.                   playEventsStack = playEventsStack.then(() => {
  2924.  
  2925.  
  2926.  
  2927.                     if ('yt-player-state-change' in da) {
  2928.  
  2929.                       const qc = da['yt-player-state-change'];
  2930.  
  2931.  
  2932.                       let isQcChanged = false;
  2933.  
  2934.                       if (qc === 2) { isQcChanged = qc !== _playerState; _playerState = 2; relayCount = 0; } // paused
  2935.                       else if (qc === 3) { isQcChanged = qc !== _playerState; _playerState = 3; } // playing
  2936.                       else if (qc === 1) { isQcChanged = qc !== _playerState; _playerState = 1; } // playing
  2937.  
  2938.  
  2939.                       if ((isQcChanged) && playerState !== _playerState) {
  2940.                         playerEventsByIframeRelay = true;
  2941.                         onPlayStateChangePromise = new Promise((resolve) => {
  2942.                           let k = _playerState;
  2943.                           foregroundPromiseFn().then(() => {
  2944.                             if (k === _playerState && playerState !== _playerState) playerState = _playerState;
  2945.                             onPlayStateChangePromise = null;
  2946.                             resolve();
  2947.                           })
  2948.                         }).catch(console.warn);
  2949.  
  2950.                       }
  2951.  
  2952.                     } else if ('yt-player-video-progress' in da) {
  2953.                       const vp = da['yt-player-video-progress'];
  2954.  
  2955.  
  2956.                       relayCount++;
  2957.                       lastPlayerProgress = vp > 0 ? vp : 0;
  2958.  
  2959.  
  2960.                       if (relayPromise && vp > 0 && relayCount >= 2) {
  2961.                         if (onPlayStateChangePromise) {
  2962.                           onPlayStateChangePromise.then(() => {
  2963.                             relayPromise && relayPromise.resolve();
  2964.                             relayPromise = null;
  2965.                           })
  2966.                         } else {
  2967.                           relayPromise.resolve();
  2968.                           relayPromise = null;
  2969.                         }
  2970.                       }
  2971.  
  2972.  
  2973.  
  2974.                     }
  2975.  
  2976.  
  2977.  
  2978.  
  2979.  
  2980.  
  2981.                     return this.handlePostMessage66_(a);
  2982.  
  2983.  
  2984.  
  2985.                   }).catch(console.warn);
  2986.  
  2987.                 }
  2988.  
  2989.  
  2990.                 cProto.handlePostMessage_ = function (a) {
  2991.  
  2992.  
  2993.                   const da = (a || 0).data || 0;
  2994.  
  2995.                   if (typeof da !== 'object') return;
  2996.  
  2997.                   if (waitForInitialDataCompletion === 1) return;
  2998.  
  2999.                   if (!isPlayProgressTriggered) {
  3000.                     isPlayProgressTriggered = true;
  3001.  
  3002.                     if ('yt-player-video-progress' in da) {
  3003.                       waitForInitialDataCompletion = 1;
  3004.  
  3005.                       const wrapWith = (data) => {
  3006.                         const { origin } = a;
  3007.                         return {
  3008.                           origin,
  3009.                           data
  3010.                         };
  3011.                       }
  3012.  
  3013.                       this.handlePostMessage67_(wrapWith({
  3014.                         "yt-iframed-parent-ready": true
  3015.                       }));
  3016.  
  3017.  
  3018.  
  3019.                       playEventsStack = playEventsStack.then(() => {
  3020.  
  3021.  
  3022.  
  3023.                         const lcr = document.querySelector('yt-live-chat-renderer');
  3024.                         const psc = document.querySelector("yt-player-seek-continuation");
  3025.                         if (lcr && psc && lcr.replayBuffer_) {
  3026.  
  3027.  
  3028.                           const rbProgress = lcr.replayBuffer_.lastVideoOffsetTimeMsec;
  3029.                           const daProgress = da['yt-player-video-progress'] * 1000
  3030.                           // document.querySelector('yt-live-chat-renderer').playerProgressChanged_(1e-5);
  3031.  
  3032.  
  3033.                           const front_ = (lcr.replayBuffer_.replayQueue || 0).front_;
  3034.                           const back_ = (lcr.replayBuffer_.replayQueue || 0).back_;
  3035.  
  3036.  
  3037.                           // console.log(deepCopy( front_))
  3038.                           // console.log(deepCopy( back_))
  3039.                           // console.log(rbProgress, daProgress, )
  3040.                           if (front_ && back_ && rbProgress > daProgress && back_.length > 2 && back_.some(e => e && +e.videoOffsetTimeMsec > daProgress) && back_.some(e => e && +e.videoOffsetTimeMsec < daProgress)) {
  3041.                             // no action
  3042.                             // console.log('ss1')
  3043.                           } else if (rbProgress < daProgress + 3400 && rbProgress > daProgress - 1200) {
  3044.                             //  daProgress - 1200 < rbProgress < daProgress + 3400
  3045.                             // console.log('ss2')
  3046.                           } else {
  3047.  
  3048.                             // console.log('ss3')
  3049.                             // lcr.replayBuffer_.replayQueue.back_.length= 0;
  3050.                             // lcr.replayBuffer_.replayQueue.front_.length= 0;
  3051.  
  3052.                             // lcr
  3053.                             lcr.previousProgressSec = 1E-5;
  3054.                             // lcr._setIsSeeking(!0),
  3055.                             lcr.replayBuffer_.clear()
  3056.                             psc.fireSeekContinuation_(da['yt-player-video-progress']);
  3057.                           }
  3058.  
  3059.                         }
  3060.  
  3061.  
  3062.                         waitForInitialDataCompletion = 2;
  3063.  
  3064.                         this.handlePostMessage_(a);
  3065.  
  3066.  
  3067.                       }).catch(console.warn);
  3068.  
  3069.  
  3070.  
  3071.                       return;
  3072.  
  3073.                     }
  3074.  
  3075.                   }
  3076.  
  3077.  
  3078.  
  3079.                   this.handlePostMessage67_(a);
  3080.  
  3081.  
  3082.  
  3083.                 }
  3084.  
  3085.               }
  3086.  
  3087.  
  3088.             })();
  3089.  
  3090.           }
  3091.  
  3092.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  3093.             setTimeout(() => {
  3094.               if (!hasTimerModified) return;
  3095.               const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  3096.               if (!tickerRenderer) return;
  3097.  
  3098.               const items = (tickerRenderer.$ || 0).items || 0;
  3099.               if (!items) return;
  3100.               const template = document.createElement('template');
  3101.               template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  3102.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  3103.                 dimmed="" [dummy777]>
  3104.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  3105.                   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));">
  3106.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  3107.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  3108.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  3109.                       style="background-color: transparent;" loaded=""><img id="img"
  3110.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  3111.                         src="${dummyImgURL}"></yt-img-shadow777>
  3112.  
  3113.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  3114.                   </div>
  3115.                 </div>
  3116.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  3117.               const dummy777 = template.content.firstElementChild;
  3118.               items.appendChild(dummy777);
  3119.               Promise.resolve(dummy777).then((dummy777) => {
  3120.                 let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  3121.                 if (container.isConnected === true) {
  3122.  
  3123.                   const evaluated = `${getComputedStyle(container).background}`;
  3124.  
  3125.                   container = null;
  3126.                   dummy777.remove();
  3127.                   dummy777.textContent = '';
  3128.                   dummy777 = null;
  3129.  
  3130.                   if (evaluated.indexOf('0.') < 4) {
  3131.  
  3132.                     // not fulfilling
  3133.                     // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3134.  
  3135.                     console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3136.                       "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3137.                       "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3138.                     );
  3139.                     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');
  3140.                     console.groupEnd();
  3141.  
  3142.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  3143.  
  3144.                   } else {
  3145.  
  3146.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  3147.                   }
  3148.                 }
  3149.               });
  3150.  
  3151.             }, 800);
  3152.           }
  3153.  
  3154.         }
  3155.       }
  3156.  
  3157.       return { setupMutObserver };
  3158.  
  3159.  
  3160.  
  3161.     })();
  3162.  
  3163.     const setupEvents = () => {
  3164.  
  3165.  
  3166.       let scrollCount = 0;
  3167.  
  3168.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  3169.  
  3170.  
  3171.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  3172.  
  3173.         const lcRenderer = lcRendererElm();
  3174.         if (lcRenderer) {
  3175.           const cnt = (lcRenderer.inst || lcRenderer);
  3176.           if (!cnt.hasUserJustInteracted11_) return;
  3177.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  3178.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  3179.           }
  3180.         }
  3181.  
  3182.       }
  3183.  
  3184.       document.addEventListener('scroll', (evt) => {
  3185.         if (!evt || !evt.isTrusted) return;
  3186.         // lastScroll = dateNow();
  3187.         if (++scrollCount > 1e9) scrollCount = 9;
  3188.       }, passiveCapture); // support contain => support passive
  3189.  
  3190.       let lastScrollCount = -1;
  3191.       document.addEventListener('wheel', (evt) => {
  3192.         if (!evt || !evt.isTrusted) return;
  3193.         if (lastScrollCount === scrollCount) return;
  3194.         lastScrollCount = scrollCount;
  3195.         lastWheel = dateNow();
  3196.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3197.       }, passiveCapture); // support contain => support passive
  3198.  
  3199.       document.addEventListener('mousedown', (evt) => {
  3200.         if (!evt || !evt.isTrusted) return;
  3201.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3202.         lastMouseDown = dateNow();
  3203.         currentMouseDown = true;
  3204.         lastUserInteraction = lastMouseDown;
  3205.       }, passiveCapture);
  3206.  
  3207.       document.addEventListener('pointerdown', (evt) => {
  3208.         if (!evt || !evt.isTrusted) return;
  3209.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3210.         lastMouseDown = dateNow();
  3211.         currentMouseDown = true;
  3212.         lastUserInteraction = lastMouseDown;
  3213.       }, passiveCapture);
  3214.  
  3215.       document.addEventListener('click', (evt) => {
  3216.         if (!evt || !evt.isTrusted) return;
  3217.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3218.         lastMouseDown = lastMouseUp = dateNow();
  3219.         currentMouseDown = false;
  3220.         lastUserInteraction = lastMouseDown;
  3221.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3222.       }, passiveCapture);
  3223.  
  3224.       document.addEventListener('tap', (evt) => {
  3225.         if (!evt || !evt.isTrusted) return;
  3226.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3227.         lastMouseDown = lastMouseUp = dateNow();
  3228.         currentMouseDown = false;
  3229.         lastUserInteraction = lastMouseDown;
  3230.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3231.       }, passiveCapture);
  3232.  
  3233.  
  3234.       document.addEventListener('mouseup', (evt) => {
  3235.         if (!evt || !evt.isTrusted) return;
  3236.         if (currentMouseDown) {
  3237.           lastMouseUp = dateNow();
  3238.           currentMouseDown = false;
  3239.           lastUserInteraction = lastMouseUp;
  3240.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3241.         }
  3242.       }, passiveCapture);
  3243.  
  3244.  
  3245.       document.addEventListener('pointerup', (evt) => {
  3246.         if (!evt || !evt.isTrusted) return;
  3247.         if (currentMouseDown) {
  3248.           lastMouseUp = dateNow();
  3249.           currentMouseDown = false;
  3250.           lastUserInteraction = lastMouseUp;
  3251.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3252.         }
  3253.       }, passiveCapture);
  3254.  
  3255.       document.addEventListener('touchstart', (evt) => {
  3256.         if (!evt || !evt.isTrusted) return;
  3257.         lastTouchDown = dateNow();
  3258.         currentTouchDown = true;
  3259.         lastUserInteraction = lastTouchDown;
  3260.       }, passiveCapture);
  3261.  
  3262.       document.addEventListener('touchmove', (evt) => {
  3263.         if (!evt || !evt.isTrusted) return;
  3264.         lastTouchDown = dateNow();
  3265.         currentTouchDown = true;
  3266.         lastUserInteraction = lastTouchDown;
  3267.       }, passiveCapture);
  3268.  
  3269.       document.addEventListener('touchend', (evt) => {
  3270.         if (!evt || !evt.isTrusted) return;
  3271.         if (currentTouchDown) {
  3272.           lastTouchUp = dateNow();
  3273.           currentTouchDown = false;
  3274.           lastUserInteraction = lastTouchUp;
  3275.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3276.         }
  3277.       }, passiveCapture);
  3278.  
  3279.       document.addEventListener('touchcancel', (evt) => {
  3280.         if (!evt || !evt.isTrusted) return;
  3281.         if (currentTouchDown) {
  3282.           lastTouchUp = dateNow();
  3283.           currentTouchDown = false;
  3284.           lastUserInteraction = lastTouchUp;
  3285.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3286.         }
  3287.       }, passiveCapture);
  3288.  
  3289.  
  3290.     }
  3291.  
  3292.     const getTimestampUsec = (itemRenderer) => {
  3293.       if (itemRenderer && 'timestampUsec' in itemRenderer) {
  3294.         return itemRenderer.timestampUsec
  3295.       } else if (itemRenderer && itemRenderer.showItemEndpoint) {
  3296.         const messageRenderer = ((itemRenderer.showItemEndpoint.showLiveChatItemEndpoint || 0).renderer || 0);
  3297.         if (messageRenderer) {
  3298.  
  3299.           const messageRendererKey = firstObjectKey(messageRenderer);
  3300.           if (messageRendererKey && messageRenderer[messageRendererKey]) {
  3301.             const messageRendererData = messageRenderer[messageRendererKey];
  3302.             if (messageRendererData && 'timestampUsec' in messageRendererData) {
  3303.               return messageRendererData.timestampUsec
  3304.             }
  3305.           }
  3306.         }
  3307.       }
  3308.       return null;
  3309.     }
  3310.  
  3311.     const onRegistryReadyForDOMOperations = () => {
  3312.  
  3313.       let firstCheckedOnYtInit = false;
  3314.  
  3315.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  3316.  
  3317.       const mightFirstCheckOnYtInit = () => {
  3318.         if (firstCheckedOnYtInit) return;
  3319.         firstCheckedOnYtInit = true;
  3320.  
  3321.         if (!document.body || !document.head) return;
  3322.         if (!assertorURL()) return;
  3323.  
  3324.         addCssManaged();
  3325.  
  3326.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  3327.         if (efsContainer && efsContainer.parentNode !== document.body) {
  3328.           document.body.appendChild(efsContainer);
  3329.         }
  3330.  
  3331.       };
  3332.  
  3333.       if (!assertorURL()) return;
  3334.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3335.  
  3336.       if (document.documentElement && document.head) {
  3337.         addCssManaged();
  3338.       }
  3339.       // console.log(document.body===null)
  3340.  
  3341.       if (ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION) {
  3342.         getLCRDummy().then(async (lcrDummy) => {
  3343.  
  3344.           const tag = "yt-live-chat-renderer"
  3345.           const dummy = lcrDummy;
  3346.  
  3347.           const cProto = getProto(dummy);
  3348.           if (!cProto || !cProto.attached) {
  3349.             console.warn(`proto.attached for ${tag} is unavailable.`);
  3350.             return;
  3351.           }
  3352.  
  3353.           mightFirstCheckOnYtInit();
  3354.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-renderer hacks");
  3355.           console.log("[Begin]");
  3356.  
  3357.  
  3358.  
  3359.  
  3360.  
  3361.  
  3362.           if (typeof cProto.playerProgressChanged_ === 'function' && !cProto.playerProgressChanged32_) {
  3363.  
  3364.             cProto.playerProgressChanged32_ = cProto.playerProgressChanged_;
  3365.  
  3366.             const pop078 = function () {
  3367.               const r = this.pop78();
  3368.  
  3369.               if (r && (r.actions || 0).length >= 1 && r.videoOffsetTimeMsec) {
  3370.                 for (const action of r.actions) {
  3371.  
  3372.                   const itemActionKey = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3373.                   if (itemActionKey) {
  3374.  
  3375.                     const itemAction = action[itemActionKey];
  3376.                     const item = (itemAction || 0).item;
  3377.                     if (typeof item === 'object') {
  3378.  
  3379.                       const rendererKey = firstObjectKey(item);
  3380.                       if (rendererKey) {
  3381.                         const renderer = item[rendererKey];
  3382.                         if (renderer && typeof renderer === 'object') {
  3383.                           renderer.__videoOffsetTimeMsec__ = r.videoOffsetTimeMsec;
  3384.                           renderer.__progressAt__ = playerProgressChangedArg1;
  3385.                         }
  3386.  
  3387.                       }
  3388.  
  3389.                     }
  3390.                   }
  3391.                 }
  3392.               }
  3393.               return r;
  3394.             }
  3395.  
  3396.             cProto.playerProgressChanged_ = function (a, b, c) {
  3397.               playerProgressChangedArg1 = a;
  3398.               playerProgressChangedArg2 = b;
  3399.               playerProgressChangedArg3 = c;
  3400.               const replayBuffer_ = this.replayBuffer_;
  3401.               if (replayBuffer_) {
  3402.                 const replayQueue = replayBuffer_.replayQueue
  3403.                 if (replayQueue && typeof replayQueue === 'object' && !replayQueue.qe3) {
  3404.  
  3405.                   replayBuffer_.replayQueue = new Proxy(replayBuffer_.replayQueue, {
  3406.                     get(target, prop, receiver) {
  3407.                       if (prop === 'qe3') return 1;
  3408.                       const v = target[prop];
  3409.                       if (prop === 'front_') {
  3410.                         if (v && typeof v.length === 'number') {
  3411.                           if (!v.pop78) {
  3412.                             v.pop78 = v.pop;
  3413.                             v.pop = pop078;
  3414.                           }
  3415.                         }
  3416.                       }
  3417.                       return v;
  3418.                     }
  3419.                   });
  3420.  
  3421.                 }
  3422.               }
  3423.               return this.playerProgressChanged32_.apply(this, arguments);
  3424.             };
  3425.  
  3426.           }
  3427.  
  3428.           if (typeof cProto.immediatelyApplyLiveChatActions === 'function' && !cProto.immediatelyApplyLiveChatActions32) {
  3429.  
  3430.             cProto.immediatelyApplyLiveChatActions32 = cProto.immediatelyApplyLiveChatActions;
  3431.  
  3432.             cProto.immediatelyApplyLiveChatActions = function (a) {
  3433.               // if (a.length > 8) {
  3434.               //   console.log(a)
  3435.               // }
  3436.               // console.log(a)
  3437.               /*
  3438.               let arr=a.slice();
  3439.  
  3440.               if(arr.length >= 2){
  3441.                 arr.sort((a, b)=>{
  3442.                   let ak = firstObjectKey(a);
  3443.                   let bk = firstObjectKey(b);
  3444.                   if(!ak||!bk) return 0;
  3445.                   const ax = +a[ak]._timestampUsec57;
  3446.                   const bx = +b[bk]._timestampUsec57;
  3447.                   if(ax >0 && bx >0){
  3448.                     const c =  bx - ax ;
  3449.  
  3450.                     return c > 0.1 ? -1 : c< -0.1 ? 1 : 0;
  3451.                   }
  3452.                   return 0;
  3453.  
  3454.                 });
  3455.                 console.log('sort', JSON.parse(JSON.stringify(arr)));
  3456.               }
  3457.               a=arr;
  3458.               */
  3459.  
  3460.               if (a && typeof a === 'object' && a.length >= 1) {
  3461.                 const d = Date.now();
  3462.                 const m = [];
  3463.                 for (let i = 0, l = a.length; i < l; i++) {
  3464.                   const action = a[i];
  3465.                   const key = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3466.                   if (key === 'addChatItemAction' || key === 'addLiveChatTickerItemAction') {
  3467.                     const itemAction = action[key] || 0;
  3468.                     const item = itemAction.item || 0;
  3469.                     if (item && typeof item === 'object') {
  3470.                       let rendererKey = firstObjectKey(item);
  3471.                       const renderer = item[rendererKey];
  3472.                       let timestampUsec = getTimestampUsec(renderer);
  3473.                       if (timestampUsec !== null) {
  3474.                         renderer._timestampUsec57 = timestampUsec;
  3475.                       }
  3476.                       m.push(renderer);
  3477.                       // if(timestampUsec!==null){
  3478.                       //   if(key==='addLiveChatTickerItemAction')console.log(renderer, rendererKey, key)
  3479.                       //   m.push(renderer);
  3480.  
  3481.                       // }
  3482.                     }
  3483.                   }
  3484.                 }
  3485.                 if (m.length >= 1) {
  3486.  
  3487.                   let lastUsec = null;
  3488.                   for (let i = 0, l = m.length; i < l; i++) {
  3489.                     const renderer = m[i];
  3490.                     if ('_timestampUsec57' in renderer) {
  3491.                       lastUsec = +renderer._timestampUsec57 / 1E3;
  3492.                       renderer.__lcrTime__ = d;
  3493.                       renderer.__actionAt__ = d;
  3494.                     }
  3495.                   }
  3496.  
  3497.  
  3498.                   if (lastUsec !== null) {
  3499.  
  3500.                     const refUsec = lastUsec
  3501.  
  3502.                     let prevUsec = null;
  3503.                     for (let i = 0, l = m.length; i < l; i++) {
  3504.                       const renderer = m[i];
  3505.                       if ('_timestampUsec57' in renderer) {
  3506.  
  3507.                         let actualTime = +renderer._timestampUsec57 / 1E3; // ms
  3508.                         let lcrTime = d - Math.round(refUsec - actualTime); // ms
  3509.  
  3510.                         renderer.__lcrTime__ = lcrTime; // ms
  3511.                         renderer.__actionAt__ = d;
  3512.  
  3513.                         prevUsec = lcrTime
  3514.                       } else {
  3515.  
  3516.                         renderer._prevUsec57 = prevUsec;
  3517.                       }
  3518.                     }
  3519.  
  3520.  
  3521.                     let nextUsec = null;
  3522.                     for (let i = m.length - 1; i >= 0; i--) {
  3523.                       const renderer = m[i];
  3524.                       if ('_timestampUsec57' in renderer) {
  3525.  
  3526.                         nextUsec = renderer.__lcrTime__
  3527.                       } else {
  3528.  
  3529.                         renderer._nextUsec57 = nextUsec;
  3530.  
  3531.                         if (renderer._nextUsec57 > 0 && renderer._prevUsec57 > 0 && renderer._nextUsec57 > renderer._prevUsec57) {
  3532.                           renderer.__lcrTime__ = (renderer._nextUsec57 + renderer._prevUsec57) / 2;
  3533.                           renderer.__actionAt__ = d;
  3534.                         }
  3535.                       }
  3536.                     }
  3537.  
  3538.  
  3539.                   }
  3540.  
  3541.  
  3542.                 }
  3543.               }
  3544.               return this.immediatelyApplyLiveChatActions32.apply(this, arguments)
  3545.             }
  3546.  
  3547.  
  3548.           }
  3549.  
  3550.           console.log("[End]");
  3551.           console.groupEnd();
  3552.  
  3553.  
  3554.         });
  3555.  
  3556.       }
  3557.  
  3558.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3559.  
  3560.         const tag = "yt-live-chat-item-list-renderer"
  3561.         const dummy = document.createElement(tag);
  3562.  
  3563.         const cProto = getProto(dummy);
  3564.         if (!cProto || !cProto.attached) {
  3565.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3566.           return;
  3567.         }
  3568.  
  3569.         mightFirstCheckOnYtInit();
  3570.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3571.         console.log("[Begin]");
  3572.  
  3573.         const mclp = cProto;
  3574.         try {
  3575.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3576.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3577.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3578.           assertor(() => typeof mclp.setAtBottom === 'function');
  3579.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3580.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3581.         } catch (e) { }
  3582.  
  3583.  
  3584.         try {
  3585.           assertor(() => typeof mclp.attached === 'function');
  3586.           assertor(() => typeof mclp.detached === 'function');
  3587.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3588.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3589.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3590.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3591.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3592.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3593.         } catch (e) { }
  3594.  
  3595.         mclp.__intermediate_delay__ = null;
  3596.  
  3597.         let mzk = 0;
  3598.         let myk = 0;
  3599.         let mlf = 0;
  3600.         let myw = 0;
  3601.         let mzt = 0;
  3602.         let zarr = null;
  3603.         let mlg = 0;
  3604.  
  3605.         if ((mclp.clearList || 0).length === 0) {
  3606.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3607.           mclp.clearList66 = mclp.clearList;
  3608.           mclp.clearList = function () {
  3609.             mzk++;
  3610.             myk++;
  3611.             mlf++;
  3612.             myw++;
  3613.             mzt++;
  3614.             mlg++;
  3615.             zarr = null;
  3616.             this.__intermediate_delay__ = null;
  3617.             this.clearList66();
  3618.           };
  3619.           console.log("clearList", "OK");
  3620.         } else {
  3621.           console.log("clearList", "NG");
  3622.         }
  3623.  
  3624.  
  3625.         let onListRendererAttachedDone = false;
  3626.  
  3627.         function setList(itemOffset, items) {
  3628.  
  3629.           const isFirstTime = onListRendererAttachedDone === false;
  3630.  
  3631.           if (isFirstTime) {
  3632.             onListRendererAttachedDone = true;
  3633.             Promise.resolve().then(watchUserCSS);
  3634.             addCssManaged();
  3635.             setupEvents();
  3636.           }
  3637.  
  3638.           setupStyle(itemOffset, items);
  3639.  
  3640.           setupMutObserver(items);
  3641.         }
  3642.  
  3643.         mclp.attached419 = async function () {
  3644.  
  3645.           if (!this.isAttached) return;
  3646.  
  3647.           let maxTrial = 16;
  3648.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3649.             if (--maxTrial < 0 || !this.isAttached) return;
  3650.             await new Promise(requestAnimationFrame);
  3651.           }
  3652.  
  3653.           if (this.isAttached !== true) return;
  3654.  
  3655.           if (!this.$) {
  3656.             console.warn("!this.$");
  3657.             return;
  3658.           }
  3659.           if (!this.$) return;
  3660.           /** @type {HTMLElement | null} */
  3661.           const itemScroller = this.$['item-scroller'];
  3662.           /** @type {HTMLElement | null} */
  3663.           const itemOffset = this.$['item-offset'];
  3664.           /** @type {HTMLElement | null} */
  3665.           const items = this.$['items'];
  3666.  
  3667.           if (!itemScroller || !itemOffset || !items) {
  3668.             console.warn("items.parentNode !== itemOffset");
  3669.             return;
  3670.           }
  3671.  
  3672.           if (nodeParent(items) !== itemOffset) {
  3673.  
  3674.             console.warn("items.parentNode !== itemOffset");
  3675.             return;
  3676.           }
  3677.  
  3678.  
  3679.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3680.  
  3681.             console.warn("id incorrect");
  3682.             return;
  3683.           }
  3684.  
  3685.           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')
  3686.  
  3687.           if (!isTargetItems) {
  3688.             console.warn("!isTargetItems");
  3689.             return;
  3690.           }
  3691.  
  3692.           setList(itemOffset, items);
  3693.  
  3694.         }
  3695.  
  3696.         mclp.attached331 = mclp.attached;
  3697.         mclp.attached = function () {
  3698.           this.attached419 && this.attached419();
  3699.           return this.attached331();
  3700.         }
  3701.  
  3702.         mclp.detached331 = mclp.detached;
  3703.  
  3704.         mclp.detached = function () {
  3705.           setupMutObserver();
  3706.           return this.detached331();
  3707.         }
  3708.  
  3709.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3710.         for (const t29 of t29s) {
  3711.           if ((t29.inst || t29).isAttached === true) {
  3712.             t29.attached419();
  3713.           }
  3714.         }
  3715.  
  3716.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3717.  
  3718.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3719.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3720.  
  3721.           /** @type {Map<number, any>} */
  3722.           const aMap = new Map();
  3723.           let count = 6150;
  3724.           mclp.async66 = mclp.async;
  3725.           mclp.async = function (e, f) {
  3726.             // ensure the previous operation is done
  3727.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3728.             const hasF = arguments.length === 2;
  3729.             const stack = new Error().stack;
  3730.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3731.             if (count > 1e9) count = 6159;
  3732.             const resId = ++count;
  3733.             aMap.set(resId, e);
  3734.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3735.               const rp = aMap.get(resId);
  3736.               if (typeof rp !== 'function') {
  3737.                 return;
  3738.               }
  3739.               let cancelCall = false;
  3740.               if (isFlushAsync) {
  3741.                 if (rk < 0) {
  3742.                   cancelCall = true;
  3743.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3744.                   cancelCall = true;
  3745.                 }
  3746.               }
  3747.               if (cancelCall) {
  3748.                 aMap.delete(resId);
  3749.               } else {
  3750.                 const asyncEn = function () {
  3751.                   aMap.delete(resId);
  3752.                   return rp.apply(this, arguments);
  3753.                 };
  3754.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3755.               }
  3756.             });
  3757.  
  3758.             return resId;
  3759.           }
  3760.  
  3761.           mclp.cancelAsync66 = mclp.cancelAsync;
  3762.           mclp.cancelAsync = function (resId) {
  3763.             if (resId <= 6150) {
  3764.               this.cancelAsync66(resId);
  3765.             } else if (aMap.has(resId)) {
  3766.               const rp = aMap.get(resId);
  3767.               aMap.delete(resId);
  3768.               if (typeof rp !== 'function') {
  3769.                 this.cancelAsync66(rp);
  3770.               }
  3771.             }
  3772.           }
  3773.  
  3774.           console.log("async", "OK");
  3775.         } else {
  3776.           console.log("async", "NG");
  3777.         }
  3778.  
  3779.  
  3780.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3781.  
  3782.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3783.           mclp.showNewItems66_ = mclp.showNewItems_;
  3784.  
  3785.           mclp.showNewItems77_ = async function () {
  3786.             if (myk > 1e9) myk = 9;
  3787.             let tid = ++myk;
  3788.  
  3789.             await new Promise(requestAnimationFrame);
  3790.  
  3791.             if (tid !== myk) {
  3792.               return;
  3793.             }
  3794.  
  3795.             const cnt = this;
  3796.  
  3797.             await Promise.resolve();
  3798.             cnt.showNewItems66_();
  3799.  
  3800.             await Promise.resolve();
  3801.  
  3802.           }
  3803.  
  3804.           mclp.showNewItems_ = function () {
  3805.  
  3806.             const cnt = this;
  3807.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3808.               cnt.showNewItems77_().then(() => {
  3809.                 resolve();
  3810.               });
  3811.             });
  3812.           }
  3813.  
  3814.           console.log("showNewItems_", "OK");
  3815.         } else {
  3816.           console.log("showNewItems_", "NG");
  3817.         }
  3818.  
  3819.  
  3820.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3821.  
  3822.           assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3823.  
  3824.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3825.  
  3826.           let contensWillChangeController = null;
  3827.  
  3828.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3829.  
  3830.           mclp.flushActiveItems78_ = async function (tid) {
  3831.             try {
  3832.               if (tid !== mlf) return;
  3833.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3834.               let logger = false;
  3835.               const cnt = this;
  3836.               let immd = cnt.__intermediate_delay__;
  3837.               await new Promise(requestAnimationFrame);
  3838.  
  3839.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3840.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3841.  
  3842.               mlf++;
  3843.               if (mlg > 1e9) mlg = 9;
  3844.               ++mlg;
  3845.  
  3846.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3847.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3848.               let changeMaxItemsToDisplay = false;
  3849.               const activeItemsLen = this.activeItems_.length;
  3850.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3851.                 logger = true;
  3852.  
  3853.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3854.  
  3855.                 logger && console.log('[Begin]')
  3856.  
  3857.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3858.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3859.                   console.log('reduce maxitems');
  3860.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3861.                     // as all the rendered chats are already "outdated"
  3862.                     // all old chats shall remove and reduced number of few chats will be rendered
  3863.                     // then restore to the original number
  3864.                     changeMaxItemsToDisplay = true;
  3865.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3866.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3867.                   }
  3868.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3869.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3870.  
  3871.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3872.                 } else {
  3873.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3874.  
  3875.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3876.                 }
  3877.               }
  3878.               // it is found that it will render all stacked chats after switching back from background
  3879.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3880.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3881.  
  3882.  
  3883.               const items = (cnt.$ || 0).items;
  3884.  
  3885.               if (USE_WILL_CHANGE_CONTROLLER) {
  3886.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3887.                   contensWillChangeController.release();
  3888.                   contensWillChangeController = null;
  3889.                 }
  3890.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3891.               }
  3892.               const wcController = contensWillChangeController;
  3893.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3894.               wcController && wcController.beforeOper();
  3895.               await Promise.resolve();
  3896.               const acItems = cnt.activeItems_;
  3897.               const len1 = acItems.length;
  3898.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3899.               let waitFor = [];
  3900.  
  3901.  
  3902.               /** @type {Set<string>} */
  3903.               const imageLinks = new Set();
  3904.  
  3905.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3906.                 for (const item of acItems) {
  3907.                   fixLiveChatItem(item, imageLinks);
  3908.                 }
  3909.               }
  3910.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3911.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3912.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3913.  
  3914.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3915.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3916.                 // preload performs the high priority fetching.
  3917.                 // prefetch delays the chat display if the video resoruce is demanding.
  3918.  
  3919.                 if (rel) {
  3920.  
  3921.                   imageLinks.forEach(imageLink => {
  3922.                     let d = false;
  3923.                     const isEmoji = imageLink.includes('/emoji/');
  3924.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3925.                     if (!pretechedSet.has(imageLink)) {
  3926.                       pretechedSet.add(imageLink);
  3927.                       d = true;
  3928.                     }
  3929.                     if (d) {
  3930.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3931.  
  3932.                     }
  3933.                   })
  3934.  
  3935.                 }
  3936.  
  3937.               }
  3938.  
  3939.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3940.               // console.log('ss1', Date.now())
  3941.               if (waitFor.length > 0) {
  3942.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3943.               }
  3944.               waitFor.length = 0;
  3945.               waitFor = null;
  3946.               // console.log('ss2', Date.now())
  3947.               cnt.flushActiveItems66_();
  3948.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3949.               const len2 = cnt.activeItems_.length;
  3950.               const bAsync = len1 !== len2;
  3951.               await Promise.resolve();
  3952.               if (wcController) {
  3953.                 if (bAsync) {
  3954.                   cnt.async(() => {
  3955.                     wcController.afterOper();
  3956.                   });
  3957.                 } else {
  3958.                   wcController.afterOper();
  3959.                 }
  3960.               }
  3961.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3962.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3963.  
  3964.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3965.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3966.               } else if (changeMaxItemsToDisplay) {
  3967.  
  3968.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3969.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  3970.                   reducedMaxItemsToDisplay,
  3971.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  3972.                 });
  3973.               }
  3974.               logger && console.log('[End]')
  3975.  
  3976.               logger && console.groupEnd();
  3977.  
  3978.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3979.  
  3980.  
  3981.                 const ff = () => {
  3982.  
  3983.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3984.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3985.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3986.                     cnt.scrollToBottom_();
  3987.  
  3988.                     Promise.resolve().then(() => {
  3989.  
  3990.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3991.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3992.                     });
  3993.  
  3994.  
  3995.                   }
  3996.                 }
  3997.  
  3998.                 ff();
  3999.  
  4000.  
  4001.                 Promise.resolve().then(ff);
  4002.  
  4003.                 // requestAnimationFrame(ff);
  4004.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  4005.  
  4006.                 const knt = cnt;
  4007.                 if (!scrollChatFn) {
  4008.                   const cnt = knt;
  4009.                   const f = () => {
  4010.                     const itemScroller = cnt.itemScroller;
  4011.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  4012.                     if (!cnt.atBottom) {
  4013.                       cnt.scrollToBottom_();
  4014.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  4015.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  4016.                     }
  4017.                   };
  4018.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  4019.                 }
  4020.  
  4021.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  4022.               }
  4023.  
  4024.               return 1;
  4025.  
  4026.  
  4027.             } catch (e) {
  4028.               console.warn(e);
  4029.             }
  4030.           }
  4031.  
  4032.           mclp.flushActiveItems77_ = function () {
  4033.  
  4034.             return new Promise(resResolve => {
  4035.               try {
  4036.                 const cnt = this;
  4037.                 if (mlf > 1e9) mlf = 9;
  4038.                 let tid = ++mlf;
  4039.                 const hostElement = cnt.hostElement || cnt;
  4040.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  4041.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  4042.  
  4043.                 // 4 times to maxItems to avoid frequent trimming.
  4044.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  4045.  
  4046.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  4047.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  4048.                 if (cnt.canScrollToBottom_()) {
  4049.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  4050.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  4051.                     .then((asyncResult) => {
  4052.                       resResolve(asyncResult); // either undefined or 1
  4053.                       resResolve = null;
  4054.                     }).catch((e) => {
  4055.                       console.warn(e);
  4056.                       if (resResolve) resResolve();
  4057.                     });
  4058.                 } else {
  4059.                   resResolve(2);
  4060.                   resResolve = null;
  4061.                 }
  4062.               } catch (e) {
  4063.                 console.warn(e);
  4064.                 if (resResolve) resResolve();
  4065.               }
  4066.  
  4067.  
  4068.             });
  4069.  
  4070.           }
  4071.  
  4072.           mclp.flushActiveItems_ = function () {
  4073.             const cnt = this;
  4074.  
  4075.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  4076.  
  4077.             if (cnt.activeItems_.length === 0) {
  4078.               cnt.__intermediate_delay__ = null;
  4079.               return;
  4080.             }
  4081.  
  4082.             const cntData = ((cnt || 0).data || 0);
  4083.             if (cntData.maxItemsToDisplay944 === undefined) {
  4084.               cntData.maxItemsToDisplay944 = null;
  4085.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  4086.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  4087.             }
  4088.  
  4089.             // ignore previous __intermediate_delay__ and create a new one
  4090.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4091.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  4092.                 if (rt === 1) {
  4093.                   resolve(1); // success, scroll to bottom
  4094.                   if (hasMoreMessageState === 1) {
  4095.                     hasMoreMessageState = 0;
  4096.                     const showMore = (cnt.$ || 0)['show-more'];
  4097.                     if (showMore) {
  4098.                       showMore.classList.remove('has-new-messages-miuzp');
  4099.                     }
  4100.                   }
  4101.                 }
  4102.                 else if (rt === 2) {
  4103.                   resolve(2); // success, trim
  4104.                   if (hasMoreMessageState === 0) {
  4105.                     hasMoreMessageState = 1;
  4106.                     const showMore = cnt.$['show-more'];
  4107.                     if (showMore) {
  4108.                       showMore.classList.add('has-new-messages-miuzp');
  4109.                     }
  4110.                   }
  4111.                 }
  4112.                 else resolve(-1); // skip
  4113.               }).catch(e => {
  4114.                 console.warn(e);
  4115.               });
  4116.             });
  4117.  
  4118.           }
  4119.           console.log("flushActiveItems_", "OK");
  4120.         } else {
  4121.           console.log("flushActiveItems_", "NG");
  4122.         }
  4123.  
  4124.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  4125.           try {
  4126.             if (mlg > 1e9) mlg = 9;
  4127.             const tid = ++mlg;
  4128.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  4129.             const runCond = () => this.canScrollToBottom_();
  4130.             if (!keepTrialCond()) return;
  4131.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  4132.             await new Promise(r => setTimeout(r, 80));
  4133.             if (!keepTrialCond()) return;
  4134.             if (runCond()) return this.flushActiveItems_() | 1;
  4135.             await new Promise(requestAnimationFrame);
  4136.             if (runCond()) return this.flushActiveItems_() | 1;
  4137.           } catch (e) {
  4138.             console.warn(e);
  4139.           }
  4140.         }
  4141.  
  4142.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  4143.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  4144.           assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  4145.  
  4146.           const querySelector = HTMLElement.prototype.querySelector;
  4147.           const U = (element) => ({
  4148.             querySelector: (selector) => querySelector.call(element, selector)
  4149.           });
  4150.  
  4151.           let qid = 0;
  4152.           mclp.atBottomChanged_ = function (a) {
  4153.             let tid = ++qid;
  4154.             let b = this;
  4155.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  4156.               if (tid !== qid) return;
  4157.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  4158.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  4159.               this.hideShowMoreAsync_ = null,
  4160.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  4161.           }
  4162.  
  4163.           console.log("atBottomChanged_", "OK");
  4164.         } else {
  4165.           console.log("atBottomChanged_", "NG");
  4166.         }
  4167.  
  4168.         if ((mclp.onScrollItems_ || 0).length === 1) {
  4169.  
  4170.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  4171.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  4172.           mclp.onScrollItems77_ = async function (evt) {
  4173.             if (myw > 1e9) myw = 9;
  4174.             let tid = ++myw;
  4175.  
  4176.             await new Promise(requestAnimationFrame);
  4177.  
  4178.             if (tid !== myw) {
  4179.               return;
  4180.             }
  4181.  
  4182.             const cnt = this;
  4183.  
  4184.             await Promise.resolve();
  4185.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  4186.               await Promise.resolve().then(() => {
  4187.                 this.ytRendererBehavior.onScroll(evt);
  4188.               }).then(() => {
  4189.                 if (this.canScrollToBottom_()) {
  4190.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  4191.                   if (hasUserJustInteracted) {
  4192.                     // only when there is an user action
  4193.                     this.setAtBottom();
  4194.                     return 1;
  4195.                   }
  4196.                 } else {
  4197.                   // no message inserting
  4198.                   this.setAtBottom();
  4199.                   return 1;
  4200.                 }
  4201.               }).then((r) => {
  4202.  
  4203.                 if (this.activeItems_.length) {
  4204.  
  4205.                   if (this.canScrollToBottom_()) {
  4206.                     this.flushActiveItems_();
  4207.                     return 1 && r;
  4208.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  4209.                     // delayed due to user action
  4210.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  4211.                     return 0;
  4212.                   }
  4213.                 }
  4214.               }).then((r) => {
  4215.                 if (r) {
  4216.                   // ensure setAtBottom is correctly set
  4217.                   this.setAtBottom();
  4218.                 }
  4219.               });
  4220.             } else {
  4221.               cnt.onScrollItems66_(evt);
  4222.             }
  4223.  
  4224.             await Promise.resolve();
  4225.  
  4226.           }
  4227.  
  4228.           mclp.onScrollItems_ = function (evt) {
  4229.  
  4230.             const cnt = this;
  4231.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4232.               cnt.onScrollItems77_(evt).then(() => {
  4233.                 resolve();
  4234.               });
  4235.             });
  4236.           }
  4237.           console.log("onScrollItems_", "OK");
  4238.         } else {
  4239.           console.log("onScrollItems_", "NG");
  4240.         }
  4241.  
  4242.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  4243.  
  4244.           assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  4245.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  4246.  
  4247.           mclp.handleLiveChatActions77_ = async function (arr) {
  4248.             if (typeof (arr || 0).length !== 'number') {
  4249.               this.handleLiveChatActions66_(arr);
  4250.               return;
  4251.             }
  4252.             if (mzt > 1e9) mzt = 9;
  4253.             let tid = ++mzt;
  4254.  
  4255.             if (zarr === null) zarr = arr;
  4256.             else Array.prototype.push.apply(zarr, arr);
  4257.             arr = null;
  4258.  
  4259.             await new Promise(requestAnimationFrame);
  4260.  
  4261.             if (tid !== mzt || zarr === null) {
  4262.               return;
  4263.             }
  4264.  
  4265.             const carr = zarr;
  4266.             zarr = null;
  4267.  
  4268.             await Promise.resolve();
  4269.             this.handleLiveChatActions66_(carr);
  4270.             await Promise.resolve();
  4271.  
  4272.           }
  4273.  
  4274.           mclp.handleLiveChatActions_ = function (arr) {
  4275.  
  4276.             const cnt = this;
  4277.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4278.               cnt.handleLiveChatActions77_(arr).then(() => {
  4279.                 resolve();
  4280.               });
  4281.             });
  4282.           }
  4283.           console.log("handleLiveChatActions_", "OK");
  4284.         } else {
  4285.           console.log("handleLiveChatActions_", "NG");
  4286.         }
  4287.  
  4288.         mclp.hasUserJustInteracted11_ = () => {
  4289.           const t = dateNow();
  4290.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  4291.         }
  4292.  
  4293.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  4294.  
  4295.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  4296.  
  4297.           mclp.canScrollToBottom_ = function () {
  4298.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  4299.           }
  4300.  
  4301.           console.log("canScrollToBottom_", "OK");
  4302.         } else {
  4303.           console.log("canScrollToBottom_", "NG");
  4304.         }
  4305.  
  4306.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  4307.  
  4308.           mclp.isSmoothScrollEnabled_ = function () {
  4309.             return false;
  4310.           }
  4311.  
  4312.           mclp.maybeResizeScrollContainer_ = function () {
  4313.             //
  4314.           }
  4315.  
  4316.           mclp.refreshOffsetContainerHeight_ = function () {
  4317.             //
  4318.           }
  4319.  
  4320.           mclp.smoothScroll_ = function () {
  4321.             //
  4322.           }
  4323.  
  4324.           mclp.resetSmoothScroll_ = function () {
  4325.             //
  4326.           }
  4327.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  4328.         } else {
  4329.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  4330.         }
  4331.  
  4332.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4333.  
  4334.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  4335.           mclp.handleAddChatItemAction_ = function (a) {
  4336.             try {
  4337.               if (a && typeof a === 'object' && !('length' in a)) {
  4338.                 fixLiveChatItem(a.item, null);
  4339.                 console.assert(arguments[0] === a);
  4340.               }
  4341.             } catch (e) { console.warn(e) }
  4342.             return this.handleAddChatItemAction66_.apply(this, arguments);
  4343.           }
  4344.  
  4345.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4346.         } else {
  4347.  
  4348.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4349.         }
  4350.  
  4351.  
  4352.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4353.  
  4354.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  4355.           mclp.handleReplaceChatItemAction_ = function (a) {
  4356.             try {
  4357.               if (a && typeof a === 'object' && !('length' in a)) {
  4358.                 fixLiveChatItem(a.replacementItem, null);
  4359.                 console.assert(arguments[0] === a);
  4360.               }
  4361.             } catch (e) { console.warn(e) }
  4362.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  4363.           }
  4364.  
  4365.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4366.         } else {
  4367.  
  4368.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4369.         }
  4370.  
  4371.         console.log("[End]");
  4372.         console.groupEnd();
  4373.  
  4374.       }).catch(console.warn);
  4375.  
  4376.  
  4377.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  4378.  
  4379.         let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  4380.  
  4381.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  4382.  
  4383.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  4384.           let v = `${attrValue}`;
  4385.           // conside a ticker is 101px width
  4386.           // 1% = 1.01px
  4387.           // 0.2% = 0.202px
  4388.  
  4389.  
  4390.           const ratio1 = (yd.ratio * 100);
  4391.           if (ratio1 > -1) { // avoid NaN
  4392.  
  4393.             // countdownDurationMs
  4394.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  4395.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  4396.             // 150000 - 1%    <1% = 1.5s>
  4397.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  4398.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  4399.  
  4400.             // 99px * 5% = 4.95px
  4401.  
  4402.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  4403.  
  4404.  
  4405.             // 1% Duration
  4406.  
  4407.             let ratio2 = ratio1;
  4408.  
  4409.             const ydd = yd.data;
  4410.             if (ydd) {
  4411.  
  4412.               const d1 = ydd.durationSec;
  4413.               const d2 = ydd.fullDurationSec;
  4414.  
  4415.               // @ step timing [min. 0.2%]
  4416.               let numOfSteps = 500;
  4417.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  4418.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  4419.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  4420.                 else if (d2 > 100) numOfSteps = 100; // 1%
  4421.                 else if (d2 > 50) numOfSteps = 50; // 2%
  4422.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  4423.                 else numOfSteps = 20;
  4424.               }
  4425.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4426.               if (numOfSteps < 5) numOfSteps = 5;
  4427.  
  4428.               const rd = numOfSteps / 100.0;
  4429.  
  4430.               ratio2 = Math.round(ratio2 * rd) / rd;
  4431.  
  4432.               // ratio2 = Math.round(ratio2 * 5) / 5;
  4433.               ratio2 = ratio2.toFixed(1);
  4434.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  4435.  
  4436.               if (yd.__style_last__ === v) return;
  4437.               yd.__style_last__ = v;
  4438.               // do not consider any delay here.
  4439.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  4440.  
  4441.             }
  4442.           }
  4443.  
  4444.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  4445.  
  4446.  
  4447.         } else {
  4448.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  4449.         }
  4450.  
  4451.       };
  4452.  
  4453.  
  4454.       const fpTicker = (renderer) => {
  4455.         const cnt = renderer.inst || renderer;
  4456.         assertor(() => typeof (cnt || 0).is === 'string');
  4457.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  4458.         const container = (cnt.$ || 0).container;
  4459.         if (container) {
  4460.           assertor(() => (container || 0).nodeType === 1);
  4461.           assertor(() => typeof container.setAttribute === 'function');
  4462.           container.setAttribute = tickerContainerSetAttribute;
  4463.         } else {
  4464.           console.warn(`"container" does not exist in ${cnt.is}`);
  4465.         }
  4466.       };
  4467.  
  4468.  
  4469.       const tags = [
  4470.         "yt-live-chat-ticker-paid-message-item-renderer",
  4471.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  4472.         "yt-live-chat-ticker-renderer",
  4473.         "yt-live-chat-ticker-sponsor-item-renderer"
  4474.       ];
  4475.  
  4476.  
  4477.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  4478.  
  4479.         mightFirstCheckOnYtInit();
  4480.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  4481.         console.log("[Begin]");
  4482.  
  4483.         let dummyValueForStyleReturn = null;
  4484.  
  4485.         const genDummyValueForStyleReturn = () => {
  4486.           let s = `--nx:82;`
  4487.           let ro = {
  4488.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4489.             "implementsGoogStringTypedString": true
  4490.           };
  4491.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4492.           return ro;
  4493.         }
  4494.  
  4495.         const isCSSPropertySupported = () => {
  4496.  
  4497.           // @property --ticker-rtime
  4498.  
  4499.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return;
  4500.           const documentElement = document.documentElement;
  4501.           if (!documentElement) {
  4502.             console.warn('document.documentElement is not found');
  4503.             return false;
  4504.           }
  4505.           if (`${getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  4506.             return false;
  4507.           }
  4508.           return true;
  4509.  
  4510.         };
  4511.  
  4512.  
  4513.         let windowShownAt = -1;
  4514.         const setupEventForWindowShownAt = () => {
  4515.           window.addEventListener('visibilitychange', () => {
  4516.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  4517.             else windowShownAt = 0;
  4518.           }, false);
  4519.         }
  4520.  
  4521.         const dProto = {
  4522.  
  4523.           attachedForTickerInit: function () {
  4524.  
  4525.             fpTicker(this.hostElement || this);
  4526.             return this.attached77();
  4527.  
  4528.           },
  4529.  
  4530.  
  4531.           // doAnimator
  4532.  
  4533.           _makeAnimator: function () {
  4534.             if (this._r782) return;
  4535.             // if (!this.isAttached) return;
  4536.             if (!this._runnerAE) {
  4537.               /** @type {HTMLElement | null} */
  4538.               const aElement = (this.$ || 0).container;
  4539.               if (!aElement) return console.warn("this.$.container is undefined");
  4540.               const da = this.data;
  4541.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  4542.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  4543.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  4544.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  4545.  
  4546.               // if (!this.__tickerBackgroundInitialChecked__) {
  4547.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  4548.               //   console.log('__tickerBackgroundInitialChecked__')
  4549.               //   this._checkTickerBackgroundChanged();
  4550.               // }
  4551.  
  4552.               aElement.style.setProperty('--ticker-c1', c1);
  4553.               aElement.style.setProperty('--ticker-c2', c2);
  4554.               aElement.classList.add(runTickerClassName);
  4555.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4556.               // this._aeStartV = this.countdownMs;
  4557.               // this._aeStartT = this.countdownDurationMs;
  4558.               if (!(p >= 0 && p <= 100)) {
  4559.                 console.warn('incorrect time ratio', p);
  4560.               } else {
  4561.                 /*
  4562.                 const u0 = p.toFixed(4) + '%';
  4563.                 this._runnerAE = animate.call(aElement,
  4564.                   [
  4565.                     { '--ticker-rtime': u0 },
  4566.                     { '--ticker-rtime': '0%' }
  4567.                   ]
  4568.                   ,
  4569.                   {
  4570.                     fill: "forwards",
  4571.                     duration: this.countdownMs,
  4572.                     easing: "linear"
  4573.                   }
  4574.                 );
  4575.                 */
  4576.  
  4577.                 let timingFn = 'linear';
  4578.  
  4579.                 const totalDuration = this.countdownDurationMs;
  4580.  
  4581.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4582.  
  4583.                   // @ step timing [min. 0.2%]
  4584.                   let stepInterval = 0.2; // unit: %
  4585.                   if (totalDuration > 400000) stepInterval = 0.2;
  4586.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4587.                   else if (totalDuration > 100000) stepInterval = 1;
  4588.                   else if (totalDuration > 50000) stepInterval = 2;
  4589.                   else if (totalDuration > 25000) stepInterval = 5;
  4590.                   else stepInterval = 5;
  4591.  
  4592.                   let numOfSteps = Math.round(100 / stepInterval);
  4593.  
  4594.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4595.                   if (numOfSteps < 5) numOfSteps = 5;
  4596.  
  4597.                   timingFn = `steps(${numOfSteps}, end)`;
  4598.  
  4599.                 }
  4600.  
  4601.  
  4602.                 /** @type {Animation} */
  4603.                 const ae = animate.call(aElement,
  4604.                   [
  4605.                     { '--ticker-rtime': '100%' },
  4606.                     { '--ticker-rtime': '0%' }
  4607.                   ]
  4608.                   ,
  4609.                   {
  4610.                     fill: "forwards",
  4611.                     duration: totalDuration,
  4612.                     easing: timingFn
  4613.                   }
  4614.                 );
  4615.  
  4616.                 this._runnerAE = ae;
  4617.  
  4618.                 ae.onfinish = (event) => {
  4619.                   this.onfinish = null;
  4620.                   if (this._runnerAE !== ae) return;
  4621.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4622.                     this._aeFinished(event);
  4623.                   }
  4624.                 }
  4625.  
  4626.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4627.  
  4628.                 if (bq >= 0 && bq <= totalDuration) {
  4629.  
  4630.                   if (bq > totalDuration - 1) {
  4631.                     ae.currentTime = bq;
  4632.                     // setTimeout(() => {
  4633.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4634.                     // }, 1);
  4635.                   } else {
  4636.                     ae.currentTime = bq;
  4637.                   }
  4638.                 } else {
  4639.                   console.warn('Error on setting _runnerAE.currentTime!');
  4640.                 }
  4641.  
  4642.  
  4643.                 aeConstructor = ae.constructor; // constructor is from iframe
  4644.                 return ae;
  4645.               }
  4646.             } else {
  4647.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4648.               // assume just time update
  4649.               const ae = this._runnerAE;
  4650.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4651.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4652.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4653.               if (!(p >= 0 && p <= 100)) {
  4654.                 console.warn('incorrect time ratio', p);
  4655.               } else {
  4656.                 // let u0 = p.toFixed(4) + '%'
  4657.                 /*
  4658.                 ae.effect.setKeyframes([
  4659.                   { '--ticker-rtime': u0 },
  4660.                   { '--ticker-rtime': '0%' }
  4661.                 ]);
  4662.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4663.                 */
  4664.                 // ae.currentTime = 0;
  4665.  
  4666.  
  4667.  
  4668.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4669.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4670.  
  4671.                   this._runnerAE.currentTime = bq
  4672.                 } else {
  4673.                   console.warn('Error on setting _runnerAE.currentTime!');
  4674.                 }
  4675.  
  4676.  
  4677.                 ae.play();
  4678.                 return ae;
  4679.               }
  4680.             }
  4681.           },
  4682.  
  4683.           _aeFinished: function (event) {
  4684.  
  4685.             if (this._r782) return;
  4686.  
  4687.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4688.               this._throwOut();
  4689.               return;
  4690.             }
  4691.  
  4692.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4693.  
  4694.             let lc = window.performance.now();
  4695.             this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4696.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4697.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4698.             if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4699.  
  4700.             this.countdownMs = 0;
  4701.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  4702.  
  4703.             if (this.isAttached) {
  4704.               let fastRemoved = false;
  4705.               if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4706.                 // no animation if the video page is switched from background to foreground
  4707.                 // this.hostElement.style.display = 'none';
  4708.                 const id = (this.data || 0).id || 0;
  4709.                 if (!id) this.data = { id: 1 }
  4710.                 try {
  4711.                   this.requestRemoval();
  4712.                   fastRemoved = true;
  4713.                 } catch (e) {
  4714.  
  4715.                 }
  4716.               }
  4717.  
  4718.               if (!fastRemoved) {
  4719.                 "auto" === this.hostElement.style.width && this.setContainerWidth();
  4720.                 this.slideDown();
  4721.               }
  4722.             }
  4723.  
  4724.  
  4725.  
  4726.           },
  4727.  
  4728.  
  4729.           /** @type {()} */
  4730.           _throwOut: function () {
  4731.             this._r782 = 1;
  4732.             Promise.resolve().then(() => {
  4733.               if (typeof this.requestRemoval === 'function') {
  4734.                 const id = (this.data || 0).id;
  4735.                 if (!id) this.data = { id: 1 };
  4736.                 try {
  4737.                   this.requestRemoval();
  4738.                 } catch (e) { }
  4739.               }
  4740.               this.detached();
  4741.               this.data = null;
  4742.               this.countdownMs = 0;
  4743.               this.lastCountdownTimeMs = null;
  4744.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  4745.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  4746.               if (this.__dataReady === true) this.__dataReady = false;
  4747.               const hm = this.hostElement || this;
  4748.               if (hm.parentNode) hm.remove();
  4749.               if (hm.firstChild) hm.textContent = '';
  4750.             }).catch(e => {
  4751.               console.warn(e);
  4752.             });
  4753.           },
  4754.  
  4755.  
  4756.           // doTimerFnModification
  4757.  
  4758.  
  4759.           /** @type {(a, b)} */
  4760.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4761.             try {
  4762.               // a.durationSec [s] => countdownMs [ms]
  4763.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4764.               // lastCountdownTimeMs => raf ongoing
  4765.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4766.  
  4767.               if (this._r782) return;
  4768.  
  4769.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4770.                 this._throwOut();
  4771.                 return;
  4772.               }
  4773.  
  4774.               // TimerFnModA
  4775.  
  4776.               b = void 0 === b ? 0 : b;
  4777.               if (void 0 !== a) {
  4778.  
  4779.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4780.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4781.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4782.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  4783.                   this.rafId = 1
  4784.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4785.                   this.detlaSincePausedSecs = 0;
  4786.                   const ae = this._makeAnimator();
  4787.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4788.  
  4789.                   // if (playerProgressChangedArg1 === null) {
  4790.                   //   console.log('startCountdownForTimerFnModA', this.data)
  4791.                   // }
  4792.  
  4793.                   if (isPlayProgressTriggered && this.isAnimationPaused !== true && this.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__) {
  4794.  
  4795.  
  4796.  
  4797.  
  4798.                     this.playerProgressSec = lastPlayerProgress > 0 ? lastPlayerProgress : 0; // save the progress first
  4799.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4800.                     this.detlaSincePausedSecs = 0;
  4801.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4802.  
  4803.                     relayPromise = relayPromise || new PromiseExternal();
  4804.  
  4805.                     relayPromise.then(() => {
  4806.                       if (this.isAttached === true && this.countdownDurationMs > 0 && this.isAnimationPaused === true && this.isReplayPaused !== true) {
  4807.                         this.isAnimationPaused = false;
  4808.                       }
  4809.                     });
  4810.  
  4811.  
  4812.                   }
  4813.  
  4814.  
  4815.  
  4816.                 }
  4817.               }
  4818.  
  4819.             } catch (e) {
  4820.               console.warn(e);
  4821.             }
  4822.  
  4823.           },
  4824.  
  4825.  
  4826.  
  4827.           /** @type {(a, b)} */
  4828.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4829.             try {
  4830.               // a.durationSec [s] => countdownMs [ms]
  4831.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4832.               // lastCountdownTimeMs => raf ongoing
  4833.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4834.  
  4835.               if (this._r782) return;
  4836.  
  4837.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4838.                 this._throwOut();
  4839.                 return;
  4840.               }
  4841.  
  4842.               // TimerFnModT
  4843.  
  4844.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4845.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4846.               b = void 0 === b ? 0 : b;
  4847.               void 0 !== a && (this.countdownMs = 1E3 * a,
  4848.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4849.                 this.ratio = 1,
  4850.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  4851.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4852.  
  4853.             } catch (e) {
  4854.               console.warn(e);
  4855.             }
  4856.  
  4857.           },
  4858.  
  4859.  
  4860.           /** @type {(a,)} */
  4861.           updateTimeoutForTimerFnModA: function (a) {
  4862.  
  4863.             try {
  4864.  
  4865.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4866.  
  4867.               if (this._r782) return;
  4868.  
  4869.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4870.                 this._throwOut();
  4871.                 return;
  4872.               }
  4873.  
  4874.               // TimerFnModA
  4875.  
  4876.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4877.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4878.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4879.               }
  4880.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4881.               if (this.isAttached && this.countdownMs) {
  4882.                 this.lastCountdownTimeMs = a
  4883.                 const ae = this._makeAnimator(); // request raf
  4884.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4885.               } else {
  4886.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4887.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4888.                     this.slideDown()));
  4889.               }
  4890.  
  4891.             } catch (e) {
  4892.               console.warn(e);
  4893.             }
  4894.  
  4895.  
  4896.           },
  4897.  
  4898.           /** @type {(a,)} */
  4899.           updateTimeoutForTimerFnModT: function (a) {
  4900.  
  4901.             try {
  4902.  
  4903.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4904.  
  4905.               if (this._r782) return;
  4906.  
  4907.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4908.                 this._throwOut();
  4909.                 return;
  4910.               }
  4911.  
  4912.               // TimerFnModT
  4913.  
  4914.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4915.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4916.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4917.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4918.               }
  4919.               // console.log(703, this.countdownMs)
  4920.               this.ratio = this.countdownMs / this.countdownDurationMs;
  4921.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4922.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4923.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4924.                     this.slideDown()))
  4925.  
  4926.  
  4927.             } catch (e) {
  4928.               console.warn(e);
  4929.             }
  4930.           },
  4931.  
  4932.           /** @type {(a,b)} */
  4933.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  4934.  
  4935.             if (this._r782) return;
  4936.  
  4937.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4938.               this._throwOut();
  4939.               return;
  4940.             }
  4941.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4942.             this._forceNoDetlaSincePausedSecs783 = 0;
  4943.  
  4944.             Promise.resolve().then(() => {
  4945.  
  4946.               if (a) {
  4947.  
  4948.                 if (this._runnerAE && this._runnerAE.playState === 'running') {
  4949.  
  4950.                   this._runnerAE.pause()
  4951.                   let lc = window.performance.now();
  4952.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4953.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4954.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4955.                 }
  4956.  
  4957.               } else if (!a && b) {
  4958.  
  4959.  
  4960.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4961.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4962.                 this.detlaSincePausedSecs = 0;
  4963.                 this.updateTimeout(a);
  4964.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  4965.  
  4966.               }
  4967.  
  4968.  
  4969.             }).catch(e => {
  4970.               console.log(e);
  4971.             });
  4972.  
  4973.  
  4974.  
  4975.           },
  4976.  
  4977.  
  4978.           /** @type {(a,b)} */
  4979.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  4980.  
  4981.             if (this._r782) return;
  4982.  
  4983.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4984.               this._throwOut();
  4985.               return;
  4986.             }
  4987.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4988.             this._forceNoDetlaSincePausedSecs783 = 0;
  4989.  
  4990.             Promise.resolve().then(() => {
  4991.  
  4992.               // TimerFnModT
  4993.  
  4994.               // ez++;
  4995.               // if(ez> 1e9) ez=9;
  4996.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4997.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4998.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4999.                   this.detlaSincePausedSecs = 0),
  5000.                 this.boundUpdateTimeout37_(a),
  5001.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  5002.  
  5003.  
  5004.             }).catch(e => {
  5005.               console.log(e);
  5006.             });
  5007.  
  5008.  
  5009.  
  5010.           },
  5011.  
  5012.  
  5013.           /** @type {(a,b)} */
  5014.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  5015.  
  5016.             if (this._r782) return;
  5017.  
  5018.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5019.               this._throwOut();
  5020.               return;
  5021.             }
  5022.  
  5023.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  5024.  
  5025.           },
  5026.  
  5027.  
  5028.  
  5029.           /** @type {()} */
  5030.           handlePauseReplayForPlaybackProgressState: function () {
  5031.             if (!playerEventsByIframeRelay) return this.handlePauseReplay66.apply(this, arguments);
  5032.  
  5033.             if (onPlayStateChangePromise) {
  5034.  
  5035.               if (this.rtu > 1e9) this.rtu = this.rtu % 1e4;
  5036.               const tid = ++this.rtu;
  5037.  
  5038.               onPlayStateChangePromise.then(() => {
  5039.                 if (tid === this.rtu && !onPlayStateChangePromise) this.handlePauseReplay.apply(this, arguments);
  5040.               });
  5041.  
  5042.               return;
  5043.             }
  5044.  
  5045.             if (playerState !== 2) return;
  5046.             if (this.isAttached) {
  5047.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  5048.               const tid = ++this.rtk;
  5049.               const tc = relayCount;
  5050.               foregroundPromiseFn().then(() => {
  5051.                 if (tid === this.rtk && tc === relayCount && playerState === 2 && _playerState === playerState) {
  5052.                   this.handlePauseReplay66();
  5053.                 }
  5054.  
  5055.               })
  5056.             }
  5057.           },
  5058.  
  5059.           /** @type {()} */
  5060.           handleResumeReplayForPlaybackProgressState: function () {
  5061.             if (!playerEventsByIframeRelay) return this.handleResumeReplay66.apply(this, arguments);
  5062.  
  5063.  
  5064.             if (onPlayStateChangePromise) {
  5065.  
  5066.               if (this.rtv > 1e9) this.rtv = this.rtv % 1e4;
  5067.               const tid = ++this.rtv;
  5068.  
  5069.               onPlayStateChangePromise.then(() => {
  5070.                 if (tid === this.rtv && !onPlayStateChangePromise) this.handleResumeReplay.apply(this, arguments);
  5071.               });
  5072.  
  5073.               return;
  5074.             }
  5075.  
  5076.  
  5077.             if (playerState !== 1) return;
  5078.             if (this.isAttached) {
  5079.               const tc = relayCount;
  5080.  
  5081.               relayPromise = relayPromise || new PromiseExternal();
  5082.               relayPromise.then(() => {
  5083.                 if (relayCount > tc && playerState === 1 && _playerState === playerState) {
  5084.                   this.handleResumeReplay66();
  5085.                 }
  5086.               });
  5087.             }
  5088.           },
  5089.  
  5090.           /** @type {(a,)} */
  5091.           handleReplayProgressForPlaybackProgressState: function (a) {
  5092.             if (this.isAttached) {
  5093.               const tid = ++this.rtk;
  5094.               foregroundPromiseFn().then(() => {
  5095.                 if (tid === this.rtk) {
  5096.                   this.handleReplayProgress66(a);
  5097.                 }
  5098.               })
  5099.             }
  5100.           }
  5101.  
  5102.  
  5103.         }
  5104.  
  5105.  
  5106.         for (const tag of tags) { // ##tag##
  5107.           const dummy = document.createElement(tag);
  5108.  
  5109.           const cProto = getProto(dummy);
  5110.           if (!cProto || !cProto.attached) {
  5111.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5112.             continue;
  5113.           }
  5114.  
  5115.           cProto.attached77 = cProto.attached;
  5116.  
  5117.           cProto.attached = dProto.attachedForTickerInit;
  5118.  
  5119.           let rafHackState = 0;
  5120.  
  5121.           let isTimingFunctionHackable = false;
  5122.  
  5123.           let urt = 0;
  5124.  
  5125.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  5126.  
  5127.             // console.log('startCountdown', typeof cProto.startCountdown)
  5128.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  5129.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  5130.  
  5131.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  5132.  
  5133.           } else {
  5134.             console.log(`Skip Timing Function Modification for ${tag}`);
  5135.             continue;
  5136.           }
  5137.  
  5138.  
  5139.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  5140.  
  5141.             // cancelable - this.rafId < isAnimationPausedChanged >
  5142.             rafHackState = 1;
  5143.  
  5144.             if (isTimingFunctionHackable) {
  5145.               rafHackState = 2;
  5146.  
  5147.             } else {
  5148.               rafHackState = 4;
  5149.             }
  5150.  
  5151.           }
  5152.  
  5153.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  5154.  
  5155.           const doRAFHack = rafHackState === 2;
  5156.  
  5157.           cProto._throwOut = dProto._throwOut;
  5158.  
  5159.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  5160.  
  5161.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  5162.  
  5163.  
  5164.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  5165.  
  5166.  
  5167.  
  5168.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  5169.               urt++;
  5170.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  5171.             } else {
  5172.               console.log('Error for setting cProto.handlePauseReplay', tag)
  5173.             }
  5174.  
  5175.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  5176.               urt++;
  5177.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  5178.             } else {
  5179.               console.log('Error for setting cProto.handleResumeReplay', tag)
  5180.             }
  5181.  
  5182.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  5183.               urt++;
  5184.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  5185.             } else {
  5186.               console.log('Error for setting cProto.handleReplayProgress', tag)
  5187.             }
  5188.  
  5189.  
  5190.  
  5191.           }
  5192.  
  5193.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  5194.           cProto.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__ = ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED;
  5195.  
  5196.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  5197.  
  5198.             cProto.rtk = 0;
  5199.             cProto.rtu = 0;
  5200.             cProto.rtv = 0;
  5201.  
  5202.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  5203.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  5204.  
  5205.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  5206.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  5207.  
  5208.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  5209.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  5210.  
  5211.           }
  5212.  
  5213.           const doTimerFnModification = (doRAFHack || doAnimator);
  5214.  
  5215.           if (doAnimator && windowShownAt < 0) {
  5216.             windowShownAt = 0;
  5217.             setupEventForWindowShownAt();
  5218.           }
  5219.  
  5220.           if (doTimerFnModification) {
  5221.  
  5222.             cProto.startCountdown = (
  5223.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  5224.             );
  5225.  
  5226.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5227.             cProto.updateTimeout = (
  5228.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  5229.             );
  5230.  
  5231.  
  5232.             // let ez = 0;
  5233.             cProto.isAnimationPausedChanged = (
  5234.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  5235.             );
  5236.  
  5237.           }
  5238.  
  5239.           if (doAnimator) {
  5240.  
  5241.             assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  5242.  
  5243.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  5244.  
  5245.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  5246.  
  5247.           }
  5248.  
  5249.           if (doTimerFnModification === true) hasTimerModified = true;
  5250.  
  5251.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  5252.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  5253.           }
  5254.  
  5255.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  5256.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  5257.           }
  5258.  
  5259.         }
  5260.  
  5261.         const selector = tags.join(', ');
  5262.         const elements = document.querySelectorAll(selector);
  5263.         if (elements.length >= 1) {
  5264.           for (const elm of elements) {
  5265.             if ((elm || elm.inst).isAttached === true) {
  5266.               fpTicker(elm);
  5267.             }
  5268.           }
  5269.         }
  5270.  
  5271.         console.log("[End]");
  5272.         console.groupEnd();
  5273.  
  5274.  
  5275.       }).catch(console.warn);
  5276.  
  5277.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  5278.  
  5279.         mightFirstCheckOnYtInit();
  5280.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  5281.         console.log("[Begin]");
  5282.         (() => {
  5283.  
  5284.           /* pending!!
  5285.  
  5286.           handleLiveChatAction
  5287.  
  5288.           removeTickerItemById
  5289.  
  5290.           _itemsChanged
  5291.           itemsChanged
  5292.  
  5293.           handleMarkChatItemAsDeletedAction
  5294.           handleMarkChatItemsByAuthorAsDeletedAction
  5295.           handleRemoveChatItemByAuthorAction
  5296.  
  5297.  
  5298.           */
  5299.  
  5300.           const tag = "yt-live-chat-ticker-renderer"
  5301.           const dummy = document.createElement(tag);
  5302.  
  5303.           const cProto = getProto(dummy);
  5304.           if (!cProto || !cProto.attached) {
  5305.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5306.             return;
  5307.           }
  5308.  
  5309.           if (AMEND_TICKER_handleLiveChatAction
  5310.             && typeof cProto.handleLiveChatAction === 'function' && !cProto.handleLiveChatAction45 && fnIntegrity(cProto.handleLiveChatAction) === '1.63.48'
  5311.             && typeof cProto.handleLiveChatActions === 'function' && !cProto.handleLiveChatActions45 && fnIntegrity(cProto.handleLiveChatActions) === '1.23.12'
  5312.             && typeof cProto.unshift === 'function' && cProto.unshift.length === 1
  5313.             && typeof cProto.handleMarkChatItemAsDeletedAction === 'function' && cProto.handleMarkChatItemAsDeletedAction.length === 1
  5314.             && typeof cProto.removeTickerItemById === 'function' && cProto.removeTickerItemById.length === 1
  5315.             && typeof cProto.handleMarkChatItemsByAuthorAsDeletedAction === 'function' && cProto.handleMarkChatItemsByAuthorAsDeletedAction.length === 1
  5316.             && typeof cProto.handleRemoveChatItemByAuthorAction === 'function' && cProto.handleRemoveChatItemByAuthorAction.length === 1
  5317.           ) {
  5318.  
  5319.             cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  5320.  
  5321.             cProto.handleLiveChatActions = function (a) {
  5322.               /**
  5323.                *
  5324.                   f.handleLiveChatActions = function(a) {
  5325.                       a.length && (a.forEach(this.handleLiveChatAction, this),
  5326.                       this.updateHighlightedItem(),
  5327.                       this.shouldAnimateIn = !0)
  5328.                   }
  5329.                *
  5330.                */
  5331.  
  5332.               if (a.length) {
  5333.                 const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  5334.                 const len = a.length;
  5335.                 if (FIX_BATCH_TICKER_ORDER && len >= 2) {
  5336.                   // Primarily for the initial batch, this is due to replayBuffer._back.
  5337.                   const entries = [];
  5338.                   const entriesI = [];
  5339.                   for (let i = 0; i < len; i++) {
  5340.                     const item = ((a[i] || 0).addLiveChatTickerItemAction || 0).item || 0;
  5341.                     if (item) {
  5342.                       const itemRendererKey = firstObjectKey(item);
  5343.                       const itemRenderer = item[itemRendererKey];
  5344.                       if (itemRenderer) {
  5345.                         let timestampUsec = getTimestampUsec(itemRenderer);
  5346.                         if (timestampUsec !== null) {
  5347.                           timestampUsec = parseInt(timestampUsec);
  5348.                           if (timestampUsec > 0) {
  5349.                             entriesI.push(i);
  5350.                             entries.push({ e: a[i], timestampUsec })
  5351.                           }
  5352.                         }
  5353.                       }
  5354.                     }
  5355.                   }
  5356.                   const mLen = entries.length;
  5357.                   if (mLen >= 2) {
  5358.                     entries.sort((a, b) => {
  5359.                       const diff = a.timestampUsec - b.timestampUsec;
  5360.                       return diff > 0.1 ? 1 : diff < -0.1 ? -1 : 0;
  5361.                     });
  5362.                     for (let j = 0; j < mLen; j++) {
  5363.                       const i = entriesI[j];
  5364.                       a[i] = entries[j].e;
  5365.                     }
  5366.                   }
  5367.                   entries.length = 0;
  5368.                   entriesI.length = 0;
  5369.                 }
  5370.                 for (const action of a) {
  5371.                   action.__batchId45__ = batchToken;
  5372.                   this.handleLiveChatAction(action);
  5373.                 }
  5374.               }
  5375.             }
  5376.  
  5377.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  5378.  
  5379.  
  5380.  
  5381.             cProto._nszlv_ = 0;
  5382.             cProto._stackedLCAs_ = null;
  5383.             cProto._lastAddItem_ = null;
  5384.             cProto._lastAddItemInStack_ = false;
  5385.             cProto.handleLiveChatAction = function (a) {
  5386.  
  5387.               /**
  5388.                *
  5389.                *
  5390.                 f.handleLiveChatAction = function(a) {
  5391.                     var b = C(a, xO)
  5392.                       , c = C(a, yO)
  5393.                       , d = C(a, o1a)
  5394.                       , e = C(a, p1a);
  5395.                     a = C(a, A1a);
  5396.                     b ? this.unshift("items", b.item) : c ? this.handleMarkChatItemAsDeletedAction(c) : d ? this.removeTickerItemById(d.targetItemId) : e ? this.handleMarkChatItemsByAuthorAsDeletedAction(e) : a && this.handleRemoveChatItemByAuthorAction(a)
  5397.                 }
  5398.                *
  5399.                */
  5400.  
  5401.               // return this.handleLiveChatAction45(a)
  5402.               const { addChatItemAction, addLiveChatTickerItemAction, markChatItemAsDeletedAction,
  5403.                 removeChatItemAction, markChatItemsByAuthorAsDeletedAction, removeChatItemByAuthorAction, __batchId45__ } = a
  5404.  
  5405.               if (addChatItemAction) return;
  5406.  
  5407.               // console.log(Object.keys(a));
  5408.  
  5409.               if (this._stackedLCAs_ === null) this._stackedLCAs_ = [];
  5410.               const stackArr = this._stackedLCAs_;
  5411.               let newStackEntry = null;
  5412.               if (addLiveChatTickerItemAction) {
  5413.                 let isDuplicated = false;
  5414.  
  5415.                 const newItem = addLiveChatTickerItemAction.item;
  5416.                 const tickerType = firstObjectKey(newItem);
  5417.                 if (!tickerType) return;
  5418.                 const tickerItem = newItem[tickerType];
  5419.                 const tickerId = tickerItem.id;
  5420.                 if (!tickerId) return;
  5421.  
  5422.                 if (this._lastAddItem_ && this._lastAddItem_.id === tickerId) {
  5423.                   let prevTickerItem = null;
  5424.                   if (this._lastAddItemInStack_) {
  5425.                     const entry = stackArr[stackArr.length - 1]; // only consider the last entry
  5426.                     if (entry && entry.action === 'addItem') {
  5427.                       prevTickerItem = entry.data; // only consider the first item;
  5428.                     }
  5429.                   } else {
  5430.                     prevTickerItem = this.items[0]; // only consider the first item;
  5431.                   }
  5432.                   if (prevTickerItem && prevTickerItem[tickerType]) {
  5433.                     if (prevTickerItem[tickerType].id === tickerId) {
  5434.                       isDuplicated = true;
  5435.                     }
  5436.                   }
  5437.                 }
  5438.                 if (!isDuplicated) {
  5439.                   this._lastAddItem_ = tickerItem;
  5440.                   this._lastAddItemInStack_ = true;
  5441.                   // console.log('newItem', newItem)
  5442.  
  5443.                   newStackEntry = { action: 'addItem', data: newItem };
  5444.  
  5445.                 } else {
  5446.                   console.log('handleLiveChatAction Repeated Item', tickerItem.id, tickerItem); // happen in both live and playback. Reason Unknown.
  5447.                   return;
  5448.                 }
  5449.  
  5450.               } else {
  5451.                 markChatItemAsDeletedAction && (newStackEntry = { action: 'mcItemD', data: markChatItemAsDeletedAction });
  5452.                 removeChatItemAction && (newStackEntry = { action: 'removeItemById', data: removeChatItemAction.targetId });
  5453.                 markChatItemsByAuthorAsDeletedAction && (newStackEntry = { action: 'mcItemAD', data: markChatItemsByAuthorAsDeletedAction });
  5454.                 removeChatItemByAuthorAction && (newStackEntry = { action: 'removeItemA', data: removeChatItemByAuthorAction })
  5455.               }
  5456.  
  5457.  
  5458.               if (!newStackEntry) return;
  5459.               stackArr.push(newStackEntry);
  5460.  
  5461.  
  5462.               this._nszlv_++;
  5463.               if (this._nszlv_ > 1e9) this._nszlv_ = 9;
  5464.               const tid = this._nszlv_;
  5465.  
  5466.               newStackEntry.__batchId45__ = __batchId45__ || '';
  5467.               newStackEntry.dateTime = Date.now();
  5468.  
  5469.               foregroundPromiseFn().then(() => {
  5470.                 if (tid !== this._nszlv_) return;
  5471.                 const dateNow = Date.now(); // time difference to shift animation start time shall be considered. (pending)
  5472.                 const stackArr = this._stackedLCAs_.slice(0);
  5473.                 this._stackedLCAs_.length = 0;
  5474.                 this._lastAddItemInStack_ = false;
  5475.                 let lastDateTime = 0;
  5476.                 let prevBatchId = '';
  5477.                 const addItems = [];
  5478.                 const previousShouldAnimateIn = this.shouldAnimateIn;
  5479.                 for (const entry of stackArr) {
  5480.                   const { action, data, dateTime, __batchId45__ } = entry;
  5481.  
  5482.                   const finishLastAction = (
  5483.                     (prevBatchId !== __batchId45__ && prevBatchId)
  5484.                     || (dateNow - lastDateTime >= 1000 && dateNow - dateTime < 1000)
  5485.                   );
  5486.  
  5487.                   const addPrevItems = addItems.length >= 1 && (finishLastAction || action !== 'addItem');
  5488.                   lastDateTime = dateTime;
  5489.                   prevBatchId = __batchId45__;
  5490.  
  5491.                   if (dateNow - dateTime >= 1000 && this.shouldAnimateIn) this.shouldAnimateIn = false;
  5492.  
  5493.                   if (addPrevItems) {
  5494.                     let e = addItems.slice(0);
  5495.                     addItems.length = 0;
  5496.                     this.unshift("items", ...e);
  5497.                   }
  5498.                   if (finishLastAction) {
  5499.                     this.updateHighlightedItem();
  5500.                     if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5501.                   }
  5502.  
  5503.                   if (action === 'addItem') addItems.unshift(data);
  5504.                   else if (action === 'mcItemD') this.handleMarkChatItemAsDeletedAction(data);
  5505.                   else if (action === 'removeItemById') this.removeTickerItemById(data);
  5506.                   else if (action === 'mcItemAD') this.handleMarkChatItemsByAuthorAsDeletedAction(data);
  5507.                   else if (action === 'removeItemA') this.handleRemoveChatItemByAuthorAction(data);
  5508.  
  5509.                 }
  5510.                 if (previousShouldAnimateIn && !this.shouldAnimateIn) this.shouldAnimateIn = true;
  5511.                 if (addItems.length >= 1) {
  5512.                   const e = addItems.slice(0);
  5513.                   addItems.length = 0;
  5514.                   if (ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME) {
  5515.  
  5516.                     const arr = [];
  5517.                     const d = Date.now();
  5518.                     for (const item of e) {
  5519.                       const key = firstObjectKey(item);
  5520.                       if (key) {
  5521.  
  5522.  
  5523.                         const itemRenderer = item[key] || 0;
  5524.                         const { durationSec, fullDurationSec, __actionAt__ } = itemRenderer;
  5525.                         if (__actionAt__ > 0 && durationSec > 0 && fullDurationSec > 0) {
  5526.  
  5527.  
  5528.                           const offset = d - __actionAt__;
  5529.                           if (offset > 0 && typeof durationSec === 'number' && typeof fullDurationSec === 'number' && fullDurationSec >= durationSec) {
  5530.                             const adjustedDurationSec = durationSec - Math.floor(offset / 1000);
  5531.                             if (adjustedDurationSec < durationSec) { // prevent NaN
  5532.                               // console.log('adjustedDurationSec', adjustedDurationSec);
  5533.                               if (adjustedDurationSec > 0) {
  5534.                                 // console.log('offset Sec', Math.floor(offset / 1000));
  5535.                                 itemRenderer.durationSec = adjustedDurationSec;
  5536.                               } else {
  5537.                                 continue;
  5538.                               }
  5539.                             }
  5540.  
  5541.                           }
  5542.  
  5543.                         }
  5544.  
  5545.                         if (fullDurationSec > 0 && durationSec < 1) continue;
  5546.  
  5547.  
  5548.  
  5549.                       }
  5550.                       arr.push(item)
  5551.                       // arr.unshift(item);
  5552.                     }
  5553.  
  5554.  
  5555.                     // console.log(arr.slice(0))
  5556.                     this.unshift("items", ...arr);
  5557.                   } else {
  5558.                     this.unshift("items", ...e);
  5559.                   }
  5560.                 }
  5561.                 if (prevBatchId || dateNow - lastDateTime >= 1000) {
  5562.                   this.updateHighlightedItem();
  5563.                   if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5564.                 }
  5565.               })
  5566.  
  5567.             }
  5568.  
  5569.             console.log("AMEND_TICKER_handleLiveChatAction - OK");
  5570.           } else {
  5571.             console.log("AMEND_TICKER_handleLiveChatAction - NG");
  5572.           }
  5573.  
  5574.           if (RAF_FIX_keepScrollClamped) {
  5575.  
  5576.             // to be improved
  5577.  
  5578.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  5579.  
  5580.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  5581.               cProto.keepScrollClamped = function () {
  5582.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  5583.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  5584.                 this.maybeClampScroll()
  5585.               }
  5586.  
  5587.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  5588.             } else {
  5589.  
  5590.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  5591.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  5592.             }
  5593.  
  5594.           }
  5595.  
  5596.  
  5597.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.44.32' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  5598.             // to be replaced by animator
  5599.  
  5600.             cProto.startScrolling = function (a) {
  5601.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  5602.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  5603.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  5604.               this.scrollRatePixelsPerSecond = a;
  5605.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5606.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  5607.             };
  5608.  
  5609.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  5610.  
  5611.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  5612.               const b = a - (this.lastFrameTimestamp || 0);
  5613.               const rate = this.scrollRatePixelsPerSecond
  5614.               const q = b / 1E3 * (rate || 0);
  5615.  
  5616.               const sl = this.$.items.scrollLeft;
  5617.               // console.log(rate, sl, q)
  5618.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  5619.  
  5620.               } else if (q > -1e-5 && q < 1e-5) {
  5621.  
  5622.               } else {
  5623.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  5624.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  5625.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  5626.                 if (cond1 || cond2 || cond3) {
  5627.                   this.$.items.scrollLeft += q;
  5628.                   this.maybeClampScroll();
  5629.                   this.updateArrows();
  5630.                 }
  5631.               }
  5632.  
  5633.               this.lastFrameTimestamp = a;
  5634.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5635.               0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5636.             } : function (a) {
  5637.               const b = a - (this.lastFrameTimestamp || 0);
  5638.               this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  5639.               this.maybeClampScroll();
  5640.               this.updateArrows();
  5641.               this.lastFrameTimestamp = a;
  5642.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5643.               0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5644.             };
  5645.  
  5646.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  5647.           } else {
  5648.             assertor(() => fnIntegrity(cProto.startScrolling, '1.44.32'));
  5649.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  5650.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  5651.           }
  5652.  
  5653.  
  5654.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  5655.  
  5656.             cProto.attached37 = cProto.attached;
  5657.             cProto.detached37 = cProto.detached;
  5658.  
  5659.             let naohzId = 0;
  5660.             cProto.__naohzId__ = 0;
  5661.             cProto.attached = function () {
  5662.               Promise.resolve().then(() => {
  5663.  
  5664.                 const hostElement = this.hostElement || this;
  5665.                 if (!(hostElement instanceof HTMLElement)) return;
  5666.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  5667.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  5668.                 // or #chat-messages
  5669.                 if (!ironPage) return;
  5670.  
  5671.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5672.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  5673.                 this.__naohzId__ = ++naohzId;
  5674.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  5675.  
  5676.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5677.  
  5678.               });
  5679.               return this.attached37.apply(this, arguments);
  5680.             };
  5681.             cProto.detached = function () {
  5682.               Promise.resolve().then(() => {
  5683.  
  5684.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  5685.                 if (!ironPage) return;
  5686.  
  5687.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5688.  
  5689.               });
  5690.               return this.detached37.apply(this, arguments);
  5691.             };
  5692.  
  5693.             const clickFade = (u) => {
  5694.               u.click();
  5695.             };
  5696.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  5697.  
  5698.               const target = (evt || 0).target || 0;
  5699.               if (!target) return;
  5700.  
  5701.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  5702.                 const is = p.is;
  5703.                 if (typeof is === 'string' && is) {
  5704.  
  5705.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  5706.                     return;
  5707.                   }
  5708.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  5709.                     const fade = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  5710.                     if (fade) {
  5711.                       Promise.resolve(fade).then(clickFade);
  5712.                       evt && evt.stopPropagation();
  5713.                     }
  5714.                     return;
  5715.                   }
  5716.                   if (is !== 'yt-live-chat-ticker-renderer') {
  5717.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  5718.                     if (!is.endsWith('-renderer')) return;
  5719.                   }
  5720.  
  5721.                 } else {
  5722.                   if ((p.nodeName || '').includes('BUTTON')) return;
  5723.                 }
  5724.  
  5725.               }
  5726.             };
  5727.  
  5728.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  5729.  
  5730.           } else {
  5731.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  5732.           }
  5733.  
  5734.  
  5735.         })();
  5736.  
  5737.         console.log("[End]");
  5738.  
  5739.         console.groupEnd();
  5740.  
  5741.       }).catch(console.warn);
  5742.  
  5743.  
  5744.       if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  5745.  
  5746.  
  5747.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  5748.  
  5749.           mightFirstCheckOnYtInit();
  5750.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  5751.           console.log("[Begin]");
  5752.           (() => {
  5753.  
  5754.             const tag = "yt-live-chat-message-input-renderer"
  5755.             const dummy = document.createElement(tag);
  5756.  
  5757.             const cProto = getProto(dummy);
  5758.             if (!cProto || !cProto.attached) {
  5759.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5760.               return;
  5761.             }
  5762.  
  5763.             let doHack = false;
  5764.             if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  5765.  
  5766.               // not cancellable
  5767.  
  5768.  
  5769.               doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  5770.  
  5771.             }
  5772.  
  5773.             if (doHack) {
  5774.  
  5775.               cProto.handleTimeout = function (a) {
  5776.                 console.log('cProto.handleTimeout', tag)
  5777.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5778.                 this.timeoutDurationMs = this.timeoutMs = a;
  5779.                 this.countdownRatio = 1;
  5780.                 0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  5781.               };
  5782.               cProto.updateTimeout = function (a) {
  5783.                 console.log('cProto.updateTimeout', tag)
  5784.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5785.                 this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  5786.                   this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  5787.                 this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  5788.                   rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  5789.               };
  5790.  
  5791.               console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  5792.             } else {
  5793.  
  5794.               console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  5795.               console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  5796.  
  5797.               console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  5798.             }
  5799.  
  5800.           })();
  5801.  
  5802.           console.log("[End]");
  5803.  
  5804.           console.groupEnd();
  5805.  
  5806.  
  5807.         })
  5808.  
  5809.  
  5810.       }
  5811.  
  5812.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  5813.  
  5814.  
  5815.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  5816.  
  5817.           mightFirstCheckOnYtInit();
  5818.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  5819.           console.log("[Begin]");
  5820.           (() => {
  5821.  
  5822.             const tag = "yt-emoji-picker-renderer"
  5823.             const dummy = document.createElement(tag);
  5824.  
  5825.             const cProto = getProto(dummy);
  5826.             if (!cProto || !cProto.attached) {
  5827.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5828.               return;
  5829.             }
  5830.  
  5831.             let doHack = false;
  5832.             if (typeof cProto.animateScroll_ === 'function') {
  5833.  
  5834.               // not cancellable
  5835.               console.log('animateScroll_', typeof cProto.animateScroll_)
  5836.  
  5837.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  5838.  
  5839.             }
  5840.  
  5841.             if (doHack) {
  5842.  
  5843.               const querySelector = HTMLElement.prototype.querySelector;
  5844.               const U = (element) => ({
  5845.                 querySelector: (selector) => querySelector.call(element, selector)
  5846.               });
  5847.  
  5848.               cProto.animateScroll_ = function (a) {
  5849.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  5850.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  5851.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  5852.                 a -= this.lastAnimationTime_;
  5853.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  5854.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  5855.                     this.animationEnd_ = this.animationStart_ = null,
  5856.                     this.lastAnimationTime_ = 0);
  5857.                 this.updateButtons_()
  5858.               }
  5859.  
  5860.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  5861.             } else {
  5862.  
  5863.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  5864.             }
  5865.  
  5866.           })();
  5867.  
  5868.           console.log("[End]");
  5869.  
  5870.           console.groupEnd();
  5871.         });
  5872.       }
  5873.  
  5874.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  5875.  
  5876.  
  5877.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  5878.  
  5879.           mightFirstCheckOnYtInit();
  5880.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  5881.           console.log("[Begin]");
  5882.           (() => {
  5883.  
  5884.             const tag = "yt-live-chat-docked-message"
  5885.             const dummy = document.createElement(tag);
  5886.  
  5887.             const cProto = getProto(dummy);
  5888.             if (!cProto || !cProto.attached) {
  5889.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5890.               return;
  5891.             }
  5892.  
  5893.             let doHack = false;
  5894.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  5895.  
  5896.               // cancelable - this.intersectRAF <detached>
  5897.               // yt-live-chat-docked-message
  5898.               // boundCheckIntersections <-> checkIntersections
  5899.               // onDockableMessagesChanged
  5900.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  5901.  
  5902.               console.log('detached', typeof cProto.detached)
  5903.               console.log('checkIntersections', typeof cProto.checkIntersections)
  5904.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  5905.  
  5906.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  5907.  
  5908.             }
  5909.  
  5910.             if (doHack) {
  5911.  
  5912.               cProto.checkIntersections = function () {
  5913.                 // console.log('cProto.checkIntersections', tag)
  5914.                 if (this.dockableMessages.length) {
  5915.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  5916.                   let a = this.dockableMessages[0]
  5917.                     , b = this.hostElement.getBoundingClientRect();
  5918.                   a = a.getBoundingClientRect();
  5919.                   let c = a.top - b.top
  5920.                     , d = 8 >= c;
  5921.                   c = 8 >= c - this.hostElement.clientHeight;
  5922.                   if (d) {
  5923.                     let e;
  5924.                     for (; d;) {
  5925.                       e = this.dockableMessages.shift();
  5926.                       d = this.dockableMessages[0];
  5927.                       if (!d)
  5928.                         break;
  5929.                       d = d.getBoundingClientRect();
  5930.                       c = d.top - b.top;
  5931.                       let f = 8 >= c;
  5932.                       if (8 >= c - a.height)
  5933.                         if (f)
  5934.                           a = d;
  5935.                         else
  5936.                           return;
  5937.                       d = f
  5938.                     }
  5939.                     this.dock(e)
  5940.                   } else
  5941.                     c && this.dockedItem && this.clear()
  5942.                 } else
  5943.                   this.intersectRAF = 0
  5944.               }
  5945.  
  5946.               cProto.onDockableMessagesChanged = function () {
  5947.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  5948.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  5949.               }
  5950.  
  5951.               cProto.detached = function () {
  5952.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  5953.               }
  5954.  
  5955.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  5956.             } else {
  5957.  
  5958.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  5959.             }
  5960.  
  5961.           })();
  5962.  
  5963.           console.log("[End]");
  5964.  
  5965.           console.groupEnd();
  5966.  
  5967.         }).catch(console.warn);
  5968.  
  5969.       }
  5970.  
  5971.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  5972.  
  5973.  
  5974.         customElements.whenDefined("yt-img-shadow").then(() => {
  5975.  
  5976.           mightFirstCheckOnYtInit();
  5977.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  5978.           console.log("[Begin]");
  5979.           (() => {
  5980.  
  5981.             const tag = "yt-img-shadow"
  5982.             const dummy = document.createElement(tag);
  5983.  
  5984.             const cProto = getProto(dummy);
  5985.             if (!cProto || !cProto.attached) {
  5986.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5987.               return;
  5988.             }
  5989.  
  5990.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  5991.  
  5992.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  5993.               cProto.thumbnailChanged_ = function (a) {
  5994.  
  5995.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  5996.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  5997.  
  5998.                 return this.thumbnailChanged66_.apply(this, arguments)
  5999.  
  6000.               }
  6001.               console.log("cProto.thumbnailChanged_ - OK");
  6002.  
  6003.             } else {
  6004.               console.log("cProto.thumbnailChanged_ - NG");
  6005.  
  6006.             }
  6007.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  6008.  
  6009.               cProto.setSrc66_ = cProto.setSrc_;
  6010.               cProto.setSrc_ = function (a) {
  6011.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  6012.                 return this.setSrc66_.apply(this, arguments)
  6013.               }
  6014.  
  6015.               console.log("cProto.setSrc_ - OK");
  6016.             } else {
  6017.  
  6018.               console.log("cProto.setSrc_ - NG");
  6019.             }
  6020.  
  6021.           })();
  6022.  
  6023.           console.log("[End]");
  6024.  
  6025.           console.groupEnd();
  6026.  
  6027.         }).catch(console.warn);
  6028.  
  6029.       }
  6030.  
  6031.       if (FIX_THUMBNAIL_DATACHANGED) {
  6032.  
  6033.  
  6034.  
  6035.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  6036.  
  6037.           mightFirstCheckOnYtInit();
  6038.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  6039.           console.log("[Begin]");
  6040.           (() => {
  6041.  
  6042.             const tag = "yt-live-chat-author-badge-renderer"
  6043.             const dummy = document.createElement(tag);
  6044.  
  6045.             const cProto = getProto(dummy);
  6046.             if (!cProto || !cProto.attached) {
  6047.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6048.               return;
  6049.             }
  6050.  
  6051.  
  6052.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  6053.  
  6054.  
  6055.  
  6056.               cProto.dataChanged86 = cProto.dataChanged;
  6057.               cProto.dataChanged = function (a) {
  6058.  
  6059.                 /*
  6060.  
  6061.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  6062.                       b.removeChild(b.firstChild);
  6063.                   if (a)
  6064.                       if (a.icon) {
  6065.                           var c = document.createElement("yt-icon");
  6066.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  6067.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  6068.                           b.appendChild(c)
  6069.                       } else if (a.customThumbnail) {
  6070.                           c = document.createElement("img");
  6071.                           var d;
  6072.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6073.                           b.appendChild(c),
  6074.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  6075.                       }
  6076.  
  6077.                 */
  6078.  
  6079.                 const image = ((this || 0).$ || 0).image
  6080.                 if (image && a && image.firstElementChild) {
  6081.                   let exisiting = image.firstElementChild;
  6082.                   if (exisiting === image.lastElementChild) {
  6083.  
  6084.  
  6085.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  6086.  
  6087.                       let c = exisiting;
  6088.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  6089.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  6090.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  6091.                       } else {
  6092.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  6093.                         if (c.icon !== p) c.icon = p;
  6094.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  6095.                       }
  6096.                       return;
  6097.  
  6098.  
  6099.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  6100.  
  6101.                       let c = exisiting;
  6102.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  6103.  
  6104.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  6105.                         return;
  6106.                       }
  6107.                       /*
  6108.  
  6109.                       var d;
  6110.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6111.  
  6112.  
  6113.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  6114.                         */
  6115.                     }
  6116.  
  6117.  
  6118.                   }
  6119.                 }
  6120.                 return this.dataChanged86.apply(this, arguments)
  6121.  
  6122.               }
  6123.               console.log("cProto.dataChanged - OK");
  6124.  
  6125.             } else {
  6126.               assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  6127.               console.log("cProto.dataChanged - NG");
  6128.  
  6129.             }
  6130.  
  6131.           })();
  6132.  
  6133.           console.log("[End]");
  6134.  
  6135.           console.groupEnd();
  6136.  
  6137.         }).catch(console.warn);
  6138.  
  6139.  
  6140.       }
  6141.  
  6142.  
  6143.       if (FIX_TOOLTIP_DISPLAY) {
  6144.  
  6145.  
  6146.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  6147.  
  6148.           mightFirstCheckOnYtInit();
  6149.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  6150.           console.log("[Begin]");
  6151.           (() => {
  6152.  
  6153.             const tag = "tp-yt-paper-tooltip"
  6154.             const dummy = document.createElement(tag);
  6155.  
  6156.             const cProto = getProto(dummy);
  6157.             if (!cProto || !cProto.attached) {
  6158.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6159.               return;
  6160.             }
  6161.  
  6162.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  6163.  
  6164.               cProto._readyClients43 = cProto._readyClients;
  6165.               cProto._readyClients = function () {
  6166.                 let r = cProto._readyClients43.apply(this, arguments);
  6167.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  6168.                 return r;
  6169.               }
  6170.  
  6171.               console.log("_readyClients - OK");
  6172.  
  6173.             } else {
  6174.               console.log("_readyClients - NG");
  6175.  
  6176.             }
  6177.  
  6178.             if (typeof cProto.show === 'function' && !cProto.show17) {
  6179.               cProto.show17 = cProto.show;
  6180.               cProto.show = function () {
  6181.  
  6182.                 let r = this.show17.apply(this, arguments);
  6183.                 this._showing === true && Promise.resolve().then(() => {
  6184.                   const tooltip = (this.$ || 0).tooltip;
  6185.  
  6186.                   if (tooltip && tooltip.firstElementChild === null) {
  6187.                     let text = tooltip.textContent;
  6188.                     if (typeof text === 'string' && text.length >= 2) {
  6189.                       tooltip.textContent = text.trim();
  6190.                     }
  6191.                   }
  6192.                 }).catch(console.warn)
  6193.                 return r;
  6194.               }
  6195.  
  6196.               console.log("trim tooltip content - OK");
  6197.  
  6198.             } else {
  6199.               console.log("trim tooltip content - NG");
  6200.  
  6201.             }
  6202.  
  6203.             /*
  6204.             cProto.updatePosition61 = cProto.updatePosition;
  6205.  
  6206.  
  6207.             cProto.updatePosition = function () {
  6208.  
  6209.  
  6210.               if (this._target && this.offsetParent) {
  6211.                 var a = this.offset;
  6212.                 14 != this.marginTop && 14 == this.offset && (a = this.marginTop);
  6213.                 var b = this.offsetParent.getBoundingClientRect()
  6214.                   , c = this._target.getBoundingClientRect()
  6215.                   , d = this.getBoundingClientRect()
  6216.                   , e = (c.width - d.width) / 2
  6217.                   , h = (c.height - d.height) / 2
  6218.                   , l = c.left - b.left
  6219.                   , m = c.top - b.top;
  6220.                 switch (this.position) {
  6221.                   case "top":
  6222.                     var p = l + e;
  6223.                     var q = m - d.height - a;
  6224.                     break;
  6225.                   case "bottom":
  6226.                     p = l + e;
  6227.                     q = m + c.height + a;
  6228.                     break;
  6229.                   case "left":
  6230.                     p = l - d.width - a;
  6231.                     q = m + h;
  6232.                     break;
  6233.                   case "right":
  6234.                     p = l + c.width + a,
  6235.                       q = m + h;
  6236.                 }
  6237.  
  6238.               if(this.ascee) {
  6239.                 this.fitToVisibleBounds = false;
  6240.               }
  6241.                 this.fitToVisibleBounds ? (b.left + p + d.width > window.innerWidth ? (this.style.right = "0px",
  6242.                   this.style.left = "auto") : (this.style.left = Math.max(0, p) + "px",
  6243.                     this.style.right = "auto"),
  6244.                   b.top + q + d.height > window.innerHeight ? (this.style.bottom = b.height + "px",
  6245.                     this.style.top = "auto") : (this.style.top = Math.max(-b.top, q) + "px",
  6246.                       this.style.bottom = "auto")) : (this.style.left = p + "px",
  6247.                         this.style.top = q + "px")
  6248.               }
  6249.             }
  6250.  
  6251.             cProto.updateStyles61 = cProto.updateStyles;
  6252.             cProto.updateStyles= function(){
  6253.               if(this.ascee) return;
  6254.               return this.updateStyles61.apply(this,arguments);
  6255.             }
  6256.             */
  6257.  
  6258.  
  6259.           })();
  6260.  
  6261.           console.log("[End]");
  6262.  
  6263.           console.groupEnd();
  6264.  
  6265.         }).catch(console.warn);
  6266.  
  6267.  
  6268.  
  6269.       }
  6270.  
  6271.  
  6272.  
  6273.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  6274.  
  6275.  
  6276.         const hookDocumentMouseDownSetupFn = () => {
  6277.  
  6278.  
  6279.  
  6280.           let muzTimestamp = 0;
  6281.           let nszDropdown = null;
  6282.  
  6283.  
  6284.  
  6285.           const handlerObject = {
  6286.  
  6287.             // mdHandler282 : function (evt) {
  6288.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6289.             //   if (!evt || !evt.isTrusted) return;
  6290.             //   muzTimestamp = 0;
  6291.             //   nszDropdown = null;
  6292.  
  6293.             //   const hostElement = this.hostElement || this;
  6294.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  6295.             //   if (!hostElement.contains(evt.target)) return;
  6296.             //   let targetDropDown = null;
  6297.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  6298.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  6299.             //       targetDropDown = dropdown;
  6300.             //     }
  6301.             //   }
  6302.             //   if ((nszDropdown = targetDropDown)) {
  6303.             //     muzTimestamp = Date.now();
  6304.             //     evt.stopImmediatePropagation();
  6305.             //     evt.stopPropagation();
  6306.             //   }
  6307.  
  6308.             // },
  6309.  
  6310.  
  6311.             muHandler282: function (evt) {
  6312.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6313.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6314.               const dropdown = nszDropdown;
  6315.               muzTimestamp = 0;
  6316.               nszDropdown = null;
  6317.  
  6318.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  6319.               const hostElement = kurMPC.hostElement || kurMPC;
  6320.               if (!hostElement.hasAttribute('menu-visible')) return;
  6321.  
  6322.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  6323.               if (chatBanner) return;
  6324.  
  6325.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  6326.  
  6327.                 /*
  6328.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6329.                 if(parentButton) return;
  6330.                 */
  6331.  
  6332.                 muzTimestamp = Date.now();
  6333.                 evt.stopImmediatePropagation();
  6334.                 evt.stopPropagation();
  6335.                 Promise.resolve(dropdown).then((dropdown) => {
  6336.                   dropdown.cancel();
  6337.                 });
  6338.                 // document.body.click();
  6339.               }
  6340.  
  6341.             },
  6342.  
  6343.             mlHandler282: function (evt) {
  6344.               muzTimestamp = 0;
  6345.               nszDropdown = null;
  6346.             },
  6347.  
  6348.             ckHandler282: function (evt) {
  6349.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6350.  
  6351.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6352.               if (Date.now() - muzTimestamp < 40) {
  6353.  
  6354.                 /*
  6355.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6356.                 if(parentButton) return;
  6357.                 */
  6358.  
  6359.                 muzTimestamp = Date.now();
  6360.                 evt.stopImmediatePropagation();
  6361.                 evt.stopPropagation();
  6362.               }
  6363.  
  6364.             },
  6365.  
  6366.             tapHandler282: function (evt) {
  6367.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6368.  
  6369.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6370.               if (Date.now() - muzTimestamp < 40) {
  6371.  
  6372.                 /*
  6373.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6374.                 if(parentButton) return;
  6375.                 */
  6376.  
  6377.                 muzTimestamp = Date.now();
  6378.                 evt.stopImmediatePropagation();
  6379.                 evt.stopPropagation();
  6380.               }
  6381.  
  6382.             },
  6383.  
  6384.  
  6385.             handleEvent(evt) {
  6386.  
  6387.  
  6388.               if (evt) {
  6389.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  6390.                 const cnt = kurMPC.inst || kurMPC;
  6391.                 const hostElement = cnt.hostElement || cnt;
  6392.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  6393.                 switch (evt.type) {
  6394.                   // case 'mousedown':
  6395.                   // return this.mdHandler282.call(kurMPC, evt);
  6396.                   case 'mouseup':
  6397.                     return this.muHandler282(evt);
  6398.                   case 'mouseleave':
  6399.                     return this.mlHandler282(evt);
  6400.                   case 'tap':
  6401.                     return this.tapHandler282(evt);
  6402.                   case 'click':
  6403.                     return this.ckHandler282(evt);
  6404.                 }
  6405.               }
  6406.  
  6407.             }
  6408.  
  6409.  
  6410.  
  6411.           }
  6412.  
  6413.           document.addEventListener('mousedown', function (evt) {
  6414.  
  6415.             if (!evt || !evt.isTrusted || !evt.target) return;
  6416.  
  6417.  
  6418.  
  6419.             muzTimestamp = 0;
  6420.             nszDropdown = null;
  6421.  
  6422.             /*
  6423.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6424.             if(parentButton){
  6425.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  6426.               if(kurMPC){
  6427.                 evt.preventDefault();
  6428.                 evt.stopImmediatePropagation();
  6429.                 evt.stopPropagation();
  6430.               }
  6431.               return;
  6432.             }
  6433.             */
  6434.  
  6435.             /** @type {HTMLElement | null} */
  6436.             const kurMP = kRef(currentMenuPivotWR);
  6437.             if (!kurMP) return;
  6438.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  6439.  
  6440.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  6441.  
  6442.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  6443.  
  6444.             const chatBanner = HTMLElement.prototype.closest.call(kurMPC, 'yt-live-chat-banner-renderer') || 0;
  6445.             if (chatBanner) return;
  6446.  
  6447.  
  6448.             let targetDropDown = null;
  6449.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  6450.               if (dropdown && dropdown.positionTarget === kurMP) {
  6451.                 targetDropDown = dropdown;
  6452.               }
  6453.             }
  6454.  
  6455.             if (!targetDropDown) return;
  6456.  
  6457.  
  6458.             /*
  6459.             if (parentButton) {
  6460.               evt.preventDefault();
  6461.               evt.stopImmediatePropagation();
  6462.               evt.stopPropagation();
  6463.               currentMenuPivotWR = mWeakRef(kurMPC);
  6464.               return;
  6465.             }
  6466.             */
  6467.  
  6468.             if ((nszDropdown = targetDropDown)) {
  6469.               muzTimestamp = Date.now();
  6470.               evt.stopImmediatePropagation();
  6471.               evt.stopPropagation();
  6472.               currentMenuPivotWR = mWeakRef(kurMPC);
  6473.  
  6474.               const listenOpts = { capture: true, passive: false, once: true };
  6475.  
  6476.               // remove unexcecuted eventHandler
  6477.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  6478.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  6479.               document.removeEventListener('tap', handlerObject, listenOpts);
  6480.               document.removeEventListener('click', handlerObject, listenOpts);
  6481.  
  6482.               // inject one time eventHandler to by pass events
  6483.               document.addEventListener('mouseup', handlerObject, listenOpts);
  6484.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  6485.               document.addEventListener('tap', handlerObject, listenOpts);
  6486.               document.addEventListener('click', handlerObject, listenOpts);
  6487.  
  6488.             }
  6489.  
  6490.           }, true);
  6491.  
  6492.         }
  6493.  
  6494.  
  6495.         // yt-live-chat-paid-message-renderer ??
  6496.  
  6497.         /*
  6498.  
  6499.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  6500.  
  6501.  
  6502.         "yt-live-chat-ticker-paid-message-item-renderer"
  6503.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  6504.         "yt-live-chat-paid-message-renderer"
  6505.         "yt-live-chat-text-message-renderer"
  6506.         "yt-live-chat-paid-sticker-renderer"
  6507.  
  6508.         */
  6509.  
  6510.  
  6511.         whenDefinedMultiple([
  6512.  
  6513.           "yt-live-chat-paid-message-renderer",
  6514.           "yt-live-chat-membership-item-renderer",
  6515.           "yt-live-chat-paid-sticker-renderer",
  6516.           "yt-live-chat-text-message-renderer",
  6517.           "yt-live-chat-auto-mod-message-renderer",
  6518.  
  6519.           /*
  6520.           "yt-live-chat-ticker-paid-message-item-renderer",
  6521.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  6522.           "yt-live-chat-paid-message-renderer",
  6523.           "yt-live-chat-text-message-renderer",
  6524.           "yt-live-chat-paid-sticker-renderer",
  6525.  
  6526.           "yt-live-chat-ticker-sponsor-item-renderer",
  6527.           "yt-live-chat-banner-header-renderer",
  6528.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6529.           "ytd-sponsorships-live-chat-header-renderer",
  6530.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6531.  
  6532.  
  6533.  
  6534.  
  6535.           "yt-live-chat-auto-mod-message-renderer",
  6536.           "yt-live-chat-text-message-renderer",
  6537.           "yt-live-chat-paid-message-renderer",
  6538.  
  6539.           "yt-live-chat-legacy-paid-message-renderer",
  6540.           "yt-live-chat-membership-item-renderer",
  6541.           "yt-live-chat-paid-sticker-renderer",
  6542.           "yt-live-chat-donation-announcement-renderer",
  6543.           "yt-live-chat-moderation-message-renderer",
  6544.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6545.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6546.           "yt-live-chat-viewer-engagement-message-renderer",
  6547.  
  6548.           */
  6549.  
  6550.  
  6551.         ]).then(sTags => {
  6552.  
  6553.  
  6554.           mightFirstCheckOnYtInit();
  6555.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  6556.           console.log("[Begin]");
  6557.           let doMouseHook = false;
  6558.  
  6559.           const dProto = {
  6560.             isClickableChatRow111: function () {
  6561.               return (
  6562.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  6563.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  6564.               ); // follow .onItemTap(a)
  6565.             }
  6566.           };
  6567.  
  6568.           for (const sTag of sTags) { // ##tag##
  6569.  
  6570.  
  6571.             (() => {
  6572.  
  6573.  
  6574.  
  6575.               const tag = sTag;
  6576.               const dummy = document.createElement(tag);
  6577.  
  6578.               const cProto = getProto(dummy);
  6579.               if (!cProto || !cProto.attached) {
  6580.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  6581.                 return;
  6582.               }
  6583.  
  6584.  
  6585.               const dCnt = dummy || dummy.inst || 0;
  6586.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  6587.  
  6588.  
  6589.  
  6590.  
  6591.  
  6592.  
  6593.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  6594.  
  6595.  
  6596.  
  6597.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  6598.  
  6599.                 if (toHookDocumentMouseDown) {
  6600.                   doMouseHook = true;
  6601.                 }
  6602.  
  6603.  
  6604.  
  6605.                 console.log("shouldSupportWholeItemClick Y", tag);
  6606.  
  6607.  
  6608.               } else {
  6609.  
  6610.                 console.log("shouldSupportWholeItemClick N", tag);
  6611.               }
  6612.  
  6613.  
  6614.  
  6615.             })();
  6616.  
  6617.           }
  6618.  
  6619.  
  6620.           if (doMouseHook) {
  6621.  
  6622.             hookDocumentMouseDownSetupFn();
  6623.  
  6624.  
  6625.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  6626.           }
  6627.  
  6628.           console.log("[End]");
  6629.  
  6630.           console.groupEnd();
  6631.  
  6632.  
  6633.         }).catch(console.warn);
  6634.  
  6635.  
  6636.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  6637.  
  6638.  
  6639.       }
  6640.  
  6641.  
  6642.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  6643.  
  6644.         let rr = null;
  6645.         const p1 = new Promise(resolve => {
  6646.           rr = resolve;
  6647.         });
  6648.  
  6649.         const p1unlock = () => {
  6650.           const f = rr;
  6651.           if (f) {
  6652.             rr = null;
  6653.             f();
  6654.           }
  6655.         }
  6656.  
  6657.         return {
  6658.           p1,
  6659.           p1unlock,
  6660.           assignLock: (targetCnt, timeout) => {
  6661.             targetCnt.__showContextMenu_assign_lock__(p1);
  6662.             if (timeout) setTimeout(p1unlock, timeout);
  6663.           }
  6664.         }
  6665.  
  6666.       }
  6667.  
  6668.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  6669.  
  6670.         document.addEventListener('mousedown', function (evt) {
  6671.  
  6672.           const maxloopDOMTreeElements = 4;
  6673.           const maxloopYtCompontents = 4;
  6674.           let j1 = 0;
  6675.           let j2 = 0;
  6676.           let target = (evt || 0).target || 0;
  6677.           if (!target) return;
  6678.  
  6679.  
  6680.           while (target instanceof HTMLElement) {
  6681.             if (++j1 > maxloopDOMTreeElements) break;
  6682.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') break;
  6683.             target = nodeParent(target);
  6684.           }
  6685.           const components = [];
  6686.           while (target instanceof HTMLElement) {
  6687.             if (++j2 > maxloopYtCompontents) break;
  6688.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') {
  6689.               components.push(target);
  6690.             }
  6691.             if (typeof (target.inst || target).showContextMenu === 'function') break;
  6692.             target = target.parentComponent || (target.inst || 0).parentComponent || null;
  6693.           }
  6694.           if (!(target instanceof HTMLElement)) return;
  6695.           const targetCnt = target.inst || target;
  6696.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  6697.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  6698.             return;
  6699.           }
  6700.  
  6701.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  6702.           if (!endpoint) return;
  6703.           if (targetCnt.opened || !targetCnt.isAttached) return;
  6704.  
  6705.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  6706.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  6707.           }
  6708.  
  6709.           let doPreRequest = false;
  6710.           if (components.length >= 2 && components[0].id === 'menu-button' && (target.$ || 0)['menu-button'] === components[0]) {
  6711.             doPreRequest = true;
  6712.           } else if (components.length === 1 && components[0] === target) {
  6713.             doPreRequest = true;
  6714.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (target.$ || 0)['author-photo'] === components[0]) {
  6715.             doPreRequest = true;
  6716.           }
  6717.           if (doPreRequest === false) {
  6718.             console.log('doPreRequest = fasle on showContextMenu', components);
  6719.             return;
  6720.           }
  6721.  
  6722.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  6723.  
  6724.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  6725.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  6726.             return;
  6727.           }
  6728.  
  6729.  
  6730.           const onSuccess = (a) => {
  6731.             /*
  6732.  
  6733.               dQ() && (a = a.response);
  6734.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6735.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  6736.  
  6737.             */
  6738.  
  6739.             a = a.response || a;
  6740.  
  6741.             if (!a) {
  6742.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  6743.               return;
  6744.             }
  6745.  
  6746.             let z = null;
  6747.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6748.  
  6749.             if (z) {
  6750.               a = z;
  6751.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  6752.             }
  6753.  
  6754.           };
  6755.           const onFailure = (a) => {
  6756.  
  6757.             /*
  6758.  
  6759.               if (a instanceof Error || a instanceof Object || a instanceof String)
  6760.                   var b = a;
  6761.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  6762.  
  6763.             */
  6764.  
  6765.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  6766.             // console.log('onFailure', a)
  6767.  
  6768.           };
  6769.  
  6770.           if (doPreRequest) {
  6771.  
  6772.             let propertyCounter = 0;
  6773.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  6774.             const p1Timeout = 800;
  6775.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  6776.  
  6777.             try {
  6778.  
  6779.               const onSuccessHelperFn = function () {
  6780.                 pm1.p1unlock();
  6781.                 if (propertyCounter !== 5) {
  6782.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  6783.                   return;
  6784.                 }
  6785.                 if (this[proxyKey] !== targetCnt) {
  6786.                   console.log('Error in prerequest for showContextMenu.this');
  6787.                   return;
  6788.                 }
  6789.                 onSuccess(...arguments);
  6790.               };
  6791.               const onFailureHelperFn = function () {
  6792.                 pm1.p1unlock();
  6793.                 if (propertyCounter !== 5) {
  6794.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  6795.                   return;
  6796.                 }
  6797.                 if (this[proxyKey] !== targetCnt) {
  6798.                   console.log('Error in prerequest for showContextMenu.this');
  6799.                   return;
  6800.                 }
  6801.                 onFailure(...arguments);
  6802.  
  6803.               }
  6804.               const fakeTargetCnt = new Proxy({
  6805.                 __showContextMenu_forceNativeRequest__: 1,
  6806.                 __showContextMenu_sync_mode_request__: 1,
  6807.                 get handleGetContextMenuResponse_() {
  6808.                   propertyCounter += 2;
  6809.                   return onSuccessHelperFn;
  6810.                 },
  6811.                 get handleGetContextMenuError() {
  6812.                   propertyCounter += 3;
  6813.                   return onFailureHelperFn;
  6814.                 }
  6815.               }, {
  6816.                 get(_, key, receiver) {
  6817.                   if (key in _) return _[key];
  6818.                   if (key === proxyKey) return targetCnt;
  6819.  
  6820.                   let giveNative = false;
  6821.                   if (key in targetCnt) {
  6822.                     if (key === 'data') giveNative = true;
  6823.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  6824.                   }
  6825.                   if (giveNative) return targetCnt[key];
  6826.                 }
  6827.               });
  6828.  
  6829.               const fakeEvent = (() => {
  6830.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  6831.                 const nf = function () { }
  6832.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  6833.  
  6834.                 return {
  6835.                   type: 'tap',
  6836.                   eventPhase: 0,
  6837.                   isTrusted: false,
  6838.                   __composed: true,
  6839.                   bubbles, cancelable, cancelBubble, timeStamp,
  6840.                   target, srcElement, defaultPrevented, currentTarget, composed,
  6841.                   stopPropagation, stopImmediatePropagation, preventDefault
  6842.                 };
  6843.               })(evt);
  6844.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  6845.  
  6846.  
  6847.             } catch (e) {
  6848.               console.warn(e);
  6849.               propertyCounter = 7;
  6850.  
  6851.             }
  6852.             if (propertyCounter !== 5) {
  6853.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  6854.               return;
  6855.             }
  6856.  
  6857.             pm1.assignLock(targetCnt, p1Timeout);
  6858.  
  6859.           }
  6860.  
  6861.  
  6862.  
  6863.  
  6864.  
  6865.  
  6866.         }, true);
  6867.  
  6868.  
  6869.       }
  6870.  
  6871.  
  6872.  
  6873.       /*
  6874.  
  6875.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  6876.  
  6877.       */
  6878.  
  6879.       whenDefinedMultiple([
  6880.         "yt-live-chat-ticker-sponsor-item-renderer",
  6881.         "yt-live-chat-banner-header-renderer",
  6882.         "yt-live-chat-text-message-renderer",
  6883.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6884.         "ytd-sponsorships-live-chat-header-renderer",
  6885.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6886.  
  6887.         "yt-live-chat-paid-sticker-renderer",
  6888.         "yt-live-chat-viewer-engagement-message-renderer",
  6889.         "yt-live-chat-paid-message-renderer"
  6890.  
  6891.  
  6892.  
  6893.  
  6894.       ]).then(sTags => {
  6895.  
  6896.         mightFirstCheckOnYtInit();
  6897.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  6898.         console.log("[Begin]");
  6899.  
  6900.  
  6901.         const __showContextMenu_mutex__ = new Mutex();
  6902.         let __showContextMenu_mutex_unlock__ = null;
  6903.         let lastShowMenuTarget = null;
  6904.  
  6905.  
  6906.  
  6907.  
  6908.         const wm37 = new WeakMap();
  6909.  
  6910.         const dProto = {
  6911.  
  6912.  
  6913.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  6914.  
  6915.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  6916.             if (a) {
  6917.               if (doDeepCopy) a = deepCopy(a);
  6918.               wm37.set(endpoint, a);
  6919.             } else {
  6920.               wm37.remove(endpoint);
  6921.             }
  6922.           },
  6923.           __getCachedEndpointData__: function (endpoint) {
  6924.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  6925.             if (endpoint) return wm37.get(endpoint);
  6926.             return null;
  6927.           },
  6928.           /** @type {(resolvedEndpoint: any) => void 0} */
  6929.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  6930.  
  6931.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  6932.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  6933.             Promise.resolve(resolvedEndpoint).then(() => {
  6934.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  6935.               this.showContextMenu_(resolvedEndpoint);
  6936.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  6937.             });
  6938.  
  6939.  
  6940.           },
  6941.  
  6942.  
  6943.  
  6944.           showContextMenuForCacheReopen: function (a) {
  6945.             if (!this.__showContextMenu_forceNativeRequest__) {
  6946.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6947.               if (endpoint) {
  6948.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  6949.                 if (resolvedEndpoint) {
  6950.                   this.__showCachedContextMenu__(resolvedEndpoint);
  6951.                   a && a.stopPropagation()
  6952.                   return;
  6953.                 }
  6954.               }
  6955.             }
  6956.             return this.showContextMenu37(a);
  6957.           },
  6958.  
  6959.           showContextMenuForCacheReopen_: function (a) {
  6960.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  6961.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6962.               if (endpoint) {
  6963.                 const f = this.__cacheResolvedEndpointData__;
  6964.                 if (typeof f === 'function') f(endpoint, a, true);
  6965.               }
  6966.             }
  6967.             return this.showContextMenu37_(a);
  6968.           },
  6969.  
  6970.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  6971.  
  6972.           showContextMenuWithDisableScroll: function (a) {
  6973.  
  6974.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6975.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  6976.  
  6977.               const parentComponent = this.parentComponent;
  6978.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  6979.                 parentComponent.allowScroll = false;
  6980.               }
  6981.             }
  6982.  
  6983.             return this.showContextMenu48.apply(this, arguments);
  6984.  
  6985.           },
  6986.  
  6987.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  6988.  
  6989.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  6990.             return __showContextMenu_mutex_unlock__ === null;
  6991.           },
  6992.  
  6993.           __showContextMenu_assign_lock__: function (p) {
  6994.  
  6995.             const mutex = __showContextMenu_mutex__;
  6996.  
  6997.             mutex.lockWith(unlock => {
  6998.               p.then(unlock);
  6999.             });
  7000.  
  7001.           },
  7002.  
  7003.           showContextMenuWithMutex: function (a) {
  7004.             lastShowMenuTarget = this;
  7005.  
  7006.             if (this.__showContextMenu_sync_mode_request__) {
  7007.  
  7008.               return this.showContextMenu47(a);
  7009.             } else {
  7010.  
  7011.               const mutex = __showContextMenu_mutex__;
  7012.  
  7013.               mutex.lockWith(unlock => {
  7014.                 if (lastShowMenuTarget !== this) {
  7015.                   unlock();
  7016.                   return;
  7017.                 }
  7018.  
  7019.                 setTimeout(unlock, 800); // in case network failure
  7020.                 __showContextMenu_mutex_unlock__ = unlock;
  7021.                 try {
  7022.                   this.showContextMenu47(a);
  7023.                 } catch (e) {
  7024.                   console.warn(e);
  7025.                   unlock(); // in case function script error
  7026.                 }
  7027.  
  7028.               });
  7029.  
  7030.             }
  7031.  
  7032.  
  7033.           },
  7034.  
  7035.           showContextMenuWithMutex_: function (a) {
  7036.  
  7037.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  7038.               __showContextMenu_mutex_unlock__();
  7039.               __showContextMenu_mutex_unlock__ = null;
  7040.             }
  7041.             return this.showContextMenu47_(a);
  7042.  
  7043.           }
  7044.  
  7045.         }
  7046.  
  7047.         for (const tag of sTags) { // ##tag##
  7048.  
  7049.  
  7050.  
  7051.           (() => {
  7052.  
  7053.             const dummy = document.createElement(tag);
  7054.  
  7055.             const cProto = getProto(dummy);
  7056.             if (!cProto || !cProto.attached) {
  7057.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7058.               return;
  7059.             }
  7060.  
  7061.  
  7062.  
  7063.  
  7064.             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) {
  7065.  
  7066.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  7067.               cProto.showContextMenu37 = cProto.showContextMenu;
  7068.  
  7069.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  7070.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  7071.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  7072.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  7073.  
  7074.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  7075.  
  7076.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  7077.  
  7078.  
  7079.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  7080.  
  7081.  
  7082.  
  7083.             } else {
  7084.  
  7085.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  7086.  
  7087.             }
  7088.  
  7089.  
  7090.  
  7091.             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) {
  7092.  
  7093.  
  7094.               cProto.showContextMenu48 = cProto.showContextMenu;
  7095.  
  7096.  
  7097.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  7098.  
  7099.  
  7100.  
  7101.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7102.  
  7103.  
  7104.  
  7105.             } else {
  7106.  
  7107.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7108.  
  7109.             }
  7110.  
  7111.  
  7112.  
  7113.  
  7114.  
  7115.             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) {
  7116.  
  7117.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  7118.               cProto.showContextMenu47 = cProto.showContextMenu;
  7119.  
  7120.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  7121.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  7122.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  7123.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  7124.  
  7125.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7126.  
  7127.  
  7128.  
  7129.             } else {
  7130.  
  7131.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7132.  
  7133.             }
  7134.  
  7135.  
  7136.  
  7137.  
  7138.           })();
  7139.  
  7140.         }
  7141.  
  7142.  
  7143.  
  7144.         console.log("[End]");
  7145.  
  7146.         console.groupEnd();
  7147.  
  7148.       }).catch(console.warn);
  7149.  
  7150.  
  7151.  
  7152.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  7153.  
  7154.         mightFirstCheckOnYtInit();
  7155.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  7156.         console.log("[Begin]");
  7157.         (() => {
  7158.  
  7159.           const tag = "tp-yt-iron-dropdown";
  7160.           const dummy = document.createElement(tag);
  7161.  
  7162.           const cProto = getProto(dummy);
  7163.           if (!cProto || !cProto.attached) {
  7164.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7165.             return;
  7166.           }
  7167.  
  7168.  
  7169.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  7170.             cProto.__deraf_hn__ = function (sId, fn) {
  7171.               const rhKey = `_rafHandler_${sId}`;
  7172.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  7173.               if (m.has(fn)) return m.get(fn);
  7174.               const resFn = () => {
  7175.                 this.__rafs[sId] = null;
  7176.                 fn.call(this)
  7177.               };
  7178.               m.set(fn, resFn);
  7179.               m.set(resFn, resFn);
  7180.               return resFn;
  7181.             };
  7182.             cProto.__deraf34 = cProto.__deraf;
  7183.             cProto.__deraf = function (a, b) { // sId, fn
  7184.               let c = this.__rafs;
  7185.               null !== c[a] && cancelAnimationFrame(c[a]);
  7186.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  7187.             };
  7188.             console.log("USE_VANILLA_DEREF - OK");
  7189.           } else {
  7190.             console.log("USE_VANILLA_DEREF - NG");
  7191.           }
  7192.  
  7193.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  7194.             cProto.__deraf66 = cProto.__deraf;
  7195.             cProto.__deraf = function (sId, fn) {
  7196.               if (this.__byPassRAF__) {
  7197.                 Promise.resolve().then(() => {
  7198.                   fn.call(this);
  7199.                 });
  7200.               }
  7201.               let r = this.__deraf66.apply(this, arguments);
  7202.               return r;
  7203.             }
  7204.             console.log("FIX_DROPDOWN_DERAF - OK");
  7205.           } else {
  7206.             console.log("FIX_DROPDOWN_DERAF - NG");
  7207.           }
  7208.  
  7209.  
  7210.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  7211.  
  7212.             let lastClose = null;
  7213.             let lastOpen = null;
  7214.             let cid = 0;
  7215.  
  7216.             cProto.__mtChanged__ = function (b) {
  7217.  
  7218.               Promise.resolve().then(() => {
  7219.                 this._applyFocus();
  7220.               }).then(() => {
  7221.                 b ? this._renderOpened() : this._renderClosed();
  7222.               }).catch(console.warn);
  7223.  
  7224.             };
  7225.  
  7226.             const __moChanged__ = () => {
  7227.               if (!cid) return;
  7228.               // console.log(553, !!lastOpen, !!lastClose);
  7229.               cid = 0;
  7230.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  7231.                 lastOpen.__mtChanged__(1)
  7232.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  7233.                 lastClose.__mtChanged__(0);
  7234.               }
  7235.               lastOpen = null;
  7236.               lastClose = null;
  7237.             };
  7238.  
  7239.  
  7240.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  7241.               cProto._openedChanged66 = cProto._openedChanged;
  7242.               cProto._openedChanged = function () {
  7243.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  7244.                 this.__byPassRAF__ = true;
  7245.                 let r = this._openedChanged66.apply(this, arguments);
  7246.                 this.__byPassRAF__ = false;
  7247.                 return r;
  7248.               }
  7249.             }
  7250.  
  7251.             const pSetGet = (key, pdThis, pdBase) => {
  7252.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  7253.               return {
  7254.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  7255.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  7256.               };
  7257.             };
  7258.  
  7259.             cProto.__modifiedMenuPropsFn__ = function () {
  7260.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  7261.               const pdBase = Object.getOwnPropertyDescriptors(this)
  7262.  
  7263.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  7264.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  7265.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  7266.  
  7267.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  7268.                 console.warn('there is setter/getter for autoFitOnAttach');
  7269.                 return;
  7270.               }
  7271.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  7272.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  7273.                 return;
  7274.               }
  7275.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  7276.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  7277.                 return;
  7278.               }
  7279.  
  7280.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  7281.  
  7282.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  7283.  
  7284.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  7285.  
  7286.               Object.defineProperties(this, {
  7287.                 autoFitOnAttach: {
  7288.                   get() {
  7289.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  7290.                     return autoFitOnAttach;
  7291.                   },
  7292.                   set(nv) {
  7293.                     autoFitOnAttach = nv;
  7294.                     return true;
  7295.                   },
  7296.                   enumerable: true,
  7297.                   configurable: true
  7298.                 }, expandSizingTargetForScrollbars: {
  7299.                   get() {
  7300.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  7301.                     return expandSizingTargetForScrollbars;
  7302.                   },
  7303.                   set(nv) {
  7304.                     expandSizingTargetForScrollbars = nv;
  7305.                     return true;
  7306.                   },
  7307.                   enumerable: true,
  7308.                   configurable: true
  7309.                 }, allowOutsideScroll: {
  7310.                   get() {
  7311.                     if (this._modifiedMenuPropOn062__) return true;
  7312.                     return allowOutsideScroll;
  7313.                   },
  7314.                   set(nv) {
  7315.                     allowOutsideScroll = nv;
  7316.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  7317.                     return true;
  7318.                   },
  7319.                   enumerable: true,
  7320.                   configurable: true
  7321.                 }
  7322.               })
  7323.             };
  7324.  
  7325.             /*
  7326.                // ***** position() to be changed. *****
  7327.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  7328.  
  7329.                   overflow: visible !important;
  7330.                   min-width: max-content !important;
  7331.                   max-width: max-content !important;
  7332.                   max-height: max-content !important;
  7333.                   min-height: max-content !important;
  7334.                   white-space: nowrap;
  7335.               }
  7336.  
  7337.             */
  7338.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  7339.  
  7340.               let m34 = 0;
  7341.               cProto.__refitByPosition__ = function () {
  7342.                 m34++;
  7343.                 if (m34 <= 0) m34 = 0;
  7344.                 if (m34 !== 1) return;
  7345.                 const hostElement = this.hostElement || this;
  7346.                 if (document.visibilityState === 'visible') {
  7347.                   const sizingTarget = this.sizingTarget;
  7348.                   if (!sizingTarget) {
  7349.                     m34 = 0;
  7350.                     return;
  7351.                   }
  7352.  
  7353.                   /*
  7354.                   let useVisibilityCollapse = true;
  7355.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  7356.                     useVisibilityCollapse = false;
  7357.                   }
  7358.  
  7359.                   if (useVisibilityCollapse) {
  7360.                     hostElement.style.visibility = 'collapse';
  7361.                     sizingTarget.style.visibility = 'collapse';
  7362.                   } else {
  7363.                     hostElement.setAttribute('rNgzQ', '');
  7364.                     sizingTarget.setAttribute('rNgzQ', '');
  7365.                   }
  7366.                   */
  7367.                   hostElement.setAttribute('rNgzQ', '');
  7368.                   sizingTarget.setAttribute('rNgzQ', '');
  7369.  
  7370.                   const gn = () => {
  7371.                     /*
  7372.                     if (useVisibilityCollapse) {
  7373.                       hostElement.style.visibility = '';
  7374.                       sizingTarget.style.visibility = '';
  7375.                     } else {
  7376.                       hostElement.removeAttribute('rNgzQ');
  7377.                       sizingTarget.removeAttribute('rNgzQ');
  7378.                     }
  7379.                     */
  7380.                     hostElement.removeAttribute('rNgzQ');
  7381.                     sizingTarget.removeAttribute('rNgzQ');
  7382.                   }
  7383.  
  7384.                   const an = async () => {
  7385.                     while (m34 >= 1) {
  7386.                       await renderReadyPn(sizingTarget);
  7387.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  7388.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  7389.                       }
  7390.                       m34--;
  7391.                     }
  7392.                     m34 = 0;
  7393.                     Promise.resolve().then(gn);
  7394.                   }
  7395.                   setTimeout(an, 4); // wait those resizing function calls
  7396.  
  7397.  
  7398.                 } else {
  7399.                   m34 = 0;
  7400.                 }
  7401.               }
  7402.               cProto.position34 = cProto.position
  7403.               cProto.position = function () {
  7404.                 if (this._positionInitialize_) {
  7405.                   this._positionInitialize_ = 0;
  7406.                   this.__refitByPosition__();
  7407.                 }
  7408.                 let r = cProto.position34.apply(this, arguments);
  7409.                 return r;
  7410.               }
  7411.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  7412.  
  7413.             } else {
  7414.  
  7415.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  7416.  
  7417.             }
  7418.  
  7419.  
  7420.  
  7421.             cProto.__openedChanged = function () {
  7422.               this._positionInitialize_ = 1;
  7423.               // this.removeAttribute('horizontal-align')
  7424.               // this.removeAttribute('vertical-align')
  7425.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  7426.                 this.__menuTypeCheck__ = true;
  7427.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  7428.                   this._modifiedMenuPropOn062__ = false;
  7429.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7430.                   // this.autoFitOnAttach = true;
  7431.                   // this.expandSizingTargetForScrollbars = true;
  7432.                   // this.allowOutsideScroll = true;
  7433.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  7434.                   this.__modifiedMenuPropsFn__();
  7435.                   // this.constrain= function(){}
  7436.                   // this.position= function(){}
  7437.  
  7438.                   // this.autoFitOnAttach = true;
  7439.                   // this.expandSizingTargetForScrollbars = true;
  7440.                   // this.allowOutsideScroll = true;
  7441.                 }
  7442.               }
  7443.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  7444.                 let newValue = null;
  7445.                 const positionTarget = this.positionTarget;
  7446.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  7447.                   if (this._modifiedMenuPropOn062__ === false) {
  7448.                     newValue = true;
  7449.                   }
  7450.                 } else if (this._modifiedMenuPropOn062__ === true) {
  7451.                   newValue = false;
  7452.                 }
  7453.                 if (newValue !== null) {
  7454.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  7455.                   this._modifiedMenuPropOn062__ = newValue;
  7456.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  7457.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  7458.                 }
  7459.               }
  7460.  
  7461.               if (this.opened) {
  7462.  
  7463.                 Promise.resolve().then(() => {
  7464.  
  7465.                   this._prepareRenderOpened();
  7466.                 }).then(() => {
  7467.                   this._manager.addOverlay(this);
  7468.                   if (this._manager._overlays.length === 1) {
  7469.                     lastOpen = this;
  7470.                     lastClose = null;
  7471.                   } else {
  7472.                     return 1;
  7473.                   }
  7474.                   // if (cid) {
  7475.                   //   clearTimeout(cid);
  7476.                   //   cid = -1;
  7477.                   //   this.__moChanged__();
  7478.                   //   cid = 0;
  7479.                   // } else {
  7480.                   //   cid = -1;
  7481.                   //   this.__moChanged__();
  7482.                   //   cid = 0;
  7483.                   // }
  7484.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7485.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7486.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7487.                   cid = cid || requestAnimationFrame(__moChanged__);
  7488.                 }).then((r) => {
  7489.  
  7490.                   if (r) this.__mtChanged__(1);
  7491.                 }).catch(console.warn);
  7492.  
  7493.               } else {
  7494.                 Promise.resolve().then(() => {
  7495.                   this._manager.removeOverlay(this);
  7496.                   if (this._manager._overlays.length === 0) {
  7497.                     lastClose = this;
  7498.                     lastOpen = null;
  7499.                   } else {
  7500.                     return 1;
  7501.                   }
  7502.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7503.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7504.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7505.                   cid = cid || requestAnimationFrame(__moChanged__);
  7506.                 }).then((r) => {
  7507.                   if (r) this.__mtChanged__(0);
  7508.                 }).catch(console.warn);
  7509.  
  7510.               }
  7511.  
  7512.             }
  7513.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  7514.  
  7515.           } else {
  7516.  
  7517.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  7518.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  7519.  
  7520.           }
  7521.  
  7522.  
  7523.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  7524.  
  7525.             cProto.__openedChanged82 = cProto.__openedChanged;
  7526.  
  7527.  
  7528.             cProto.__openedChanged = function () {
  7529.  
  7530.               // currentMenuPivotWR = null;
  7531.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  7532.  
  7533.  
  7534.  
  7535.               // if (this.opened && this.positionTarget) {
  7536.  
  7537.               //   const positionTarget = this.positionTarget;
  7538.               //   console.log(1480, '__openedChanged.B', positionTarget)
  7539.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  7540.  
  7541.               // }
  7542.  
  7543.               const positionTarget = this.positionTarget;
  7544.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  7545.               return this.__openedChanged82.apply(this, arguments);
  7546.             }
  7547.           }
  7548.  
  7549.  
  7550.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  7551.  
  7552.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  7553.  
  7554.           //   cProto.__onCaptureScroll = function(a){
  7555.  
  7556.           //     const q = true;
  7557.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  7558.  
  7559.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  7560.           //       async function af() {
  7561.           //         this.__isAnimating && this._finishRenderOpened();
  7562.           //         if (!this.opened) return;
  7563.           //         this.__restoreScrollPosition();
  7564.           //         await new Promise(r => requestAnimationFrame(r));
  7565.           //         if (!this.opened) return;
  7566.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7567.           //         if (!this.opened) return;
  7568.           //         this.__restoreScrollPosition();
  7569.           //         await new Promise(r => requestAnimationFrame(r));
  7570.           //         if (!this.opened) return;
  7571.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7572.           //         if (!this.opened) return;
  7573.           //         this.opened && !this.__isAnimating && this.refit();
  7574.           //       }
  7575.           //       Promise.resolve().then(af);
  7576.  
  7577.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  7578.           //     }else{
  7579.  
  7580.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  7581.  
  7582.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  7583.           //     }
  7584.           //   }
  7585.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  7586.           // }else{
  7587.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  7588.  
  7589.           // }
  7590.  
  7591.  
  7592.         })();
  7593.  
  7594.         console.log("[End]");
  7595.  
  7596.         console.groupEnd();
  7597.  
  7598.       }).catch(console.warn);
  7599.  
  7600.  
  7601.  
  7602.  
  7603.  
  7604.  
  7605.  
  7606.  
  7607.       /*
  7608.  
  7609.  
  7610.  
  7611.  
  7612.  
  7613.           var FU = function() {
  7614.               var a = this;
  7615.               this.nextHandle_ = 1;
  7616.               this.clients_ = {};
  7617.               this.JSC$10323_callbacks_ = {};
  7618.               this.unsubscribeAsyncHandles_ = {};
  7619.               this.subscribe = vl(function(b, c, d) {
  7620.                   var e = Geb(b);
  7621.                   if (e in a.clients_)
  7622.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  7623.                   else {
  7624.                       a: {
  7625.                           var h = Geb(b), l;
  7626.                           for (l in a.unsubscribeAsyncHandles_) {
  7627.                               var m = a.clients_[l];
  7628.                               if (m instanceof KO) {
  7629.                                   delete a.clients_[l];
  7630.                                   delete a.JSC$10323_callbacks_[l];
  7631.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  7632.                                   delete a.unsubscribeAsyncHandles_[l];
  7633.                                   i6a(m);
  7634.                                   m.objectId_ = new FQa(h);
  7635.                                   m.register();
  7636.                                   d = m;
  7637.                                   break a
  7638.                               }
  7639.                           }
  7640.                           d.objectSource = b.invalidationId.objectSource;
  7641.                           d.objectId = h;
  7642.                           if (b = b.webAuthConfigurationData)
  7643.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  7644.                               b.pageId && (d.pageId = b.pageId);
  7645.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  7646.                           d.register()
  7647.                       }
  7648.                       a.clients_[e] = d;
  7649.                       a.JSC$10323_callbacks_[e] = {}
  7650.                   }
  7651.                   d = a.nextHandle_++;
  7652.                   a.JSC$10323_callbacks_[e][d] = c;
  7653.                   return d
  7654.               })
  7655.           };
  7656.           FU.prototype.unsubscribe = function(a, b) {
  7657.               var c = Geb(a);
  7658.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  7659.               !this.JSC$10323_callbacks_[c].length)) {
  7660.                   var d = this.clients_[c];
  7661.                   b = Jq.run(function() {
  7662.                       ei(d);
  7663.                       delete this.clients_[c];
  7664.                       delete this.unsubscribeAsyncHandles_[c]
  7665.                   }
  7666.                   .bind(this));
  7667.                   this.unsubscribeAsyncHandles_[c] = b
  7668.               }
  7669.           }
  7670.           ;
  7671.  
  7672.  
  7673.       */
  7674.  
  7675.  
  7676.  
  7677.  
  7678.       const onManagerFound = (dummyManager) => {
  7679.         if (!dummyManager || typeof dummyManager !== 'object') return;
  7680.  
  7681.         const mgrProto = dummyManager.constructor.prototype;
  7682.  
  7683.         let keyCallbackStore = '';
  7684.         for (const [key, v] of Object.entries(dummyManager)) {
  7685.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  7686.         }
  7687.  
  7688.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  7689.  
  7690.         if (mgrProto.unsubscribe16) return;
  7691.  
  7692.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  7693.  
  7694.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  7695.         console.log("[Begin]");
  7696.  
  7697.  
  7698.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  7699.         const isEmptyObject = ((obj) => (firstKey(obj) === null));
  7700.  
  7701.         const idMapper = new Map();
  7702.  
  7703.         const convertId = function (objectId) {
  7704.           if (!objectId || typeof objectId !== 'string') return null;
  7705.  
  7706.           let result = idMapper.get(objectId)
  7707.           if (result) return result;
  7708.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  7709.           idMapper.set(objectId, result)
  7710.           return result;
  7711.         }
  7712.  
  7713.  
  7714.         const rafHandleHolder = [];
  7715.  
  7716.         let pzw = 0;
  7717.         let lza = 0;
  7718.         const rafHandlerFn = () => {
  7719.           pzw = 0;
  7720.           if (rafHandleHolder.length === 1) {
  7721.             const f = rafHandleHolder[0];
  7722.             rafHandleHolder.length = 0;
  7723.             f();
  7724.           } else if (rafHandleHolder.length > 1) {
  7725.             const arr = rafHandleHolder.slice(0);
  7726.             rafHandleHolder.length = 0;
  7727.             for (const fn of arr) fn();
  7728.           }
  7729.         };
  7730.  
  7731.  
  7732.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  7733.  
  7734.           const checkIntegrityForSubscribe = (mgr) => {
  7735.             if (mgr
  7736.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  7737.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  7738.  
  7739.               const ns = new Set(Object.keys(mgr));
  7740.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  7741.  
  7742.               if (ns.size >= 6 && ms.size >= 4) {
  7743.                 // including 'subscribe18'
  7744.                 // 'unsubscribe16', 'subscribe19'
  7745.  
  7746.                 let r = 0;
  7747.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  7748.                   r += ns.has(k) ? 1 : 0;
  7749.                 }
  7750.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  7751.                   r += ms.has(k) ? 1 : 0;
  7752.                 }
  7753.                 if (r === 10) {
  7754.                   const isObject = (c) => (c || 0).constructor === Object;
  7755.  
  7756.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  7757.  
  7758.                     return true;
  7759.                   }
  7760.  
  7761.  
  7762.                 }
  7763.  
  7764.               }
  7765.  
  7766.  
  7767.             }
  7768.             return false;
  7769.           }
  7770.  
  7771.           mgrProto.subscribe19 = function (o, f, opts) {
  7772.  
  7773.             const ct_clients_ = this.clients_ || 0;
  7774.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  7775.  
  7776.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  7777.  
  7778.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7779.             if (!objectId) return this.subscribe18.apply(this, arguments);
  7780.             objectId = convertId(objectId);
  7781.  
  7782.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  7783.  
  7784.             if (ct_clients_[objectId]) {
  7785.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  7786.             }
  7787.  
  7788.             return this.subscribe18.apply(this, arguments);
  7789.           }
  7790.  
  7791.           mgrProto.unsubscribe = function (o, d) {
  7792.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  7793.               this.subscribe18 = this.subscribe;
  7794.               this.subscribe = this.subscribe19;
  7795.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  7796.             }
  7797.             const ct_clients_ = this.clients_;
  7798.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  7799.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  7800.  
  7801.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7802.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  7803.  
  7804.             objectId = convertId(objectId);
  7805.  
  7806.  
  7807.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  7808.  
  7809.             const callbacks = this[keyCallbackStore] || 0;
  7810.             const callbackObj = callbacks[objectId] || 0;
  7811.  
  7812.  
  7813.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  7814.               const w = ct_clients_[objectId];
  7815.               --lza;
  7816.               if (lza < -1e9) lza = -1;
  7817.               const qta = lza;
  7818.               rafHandleHolder.push(() => {
  7819.                 if (qta === ct_handles_[objectId]) {
  7820.                   const o = {
  7821.                     callbacks, callbackObj,
  7822.                     client: ct_clients_[objectId],
  7823.                     handle: ct_handles_[objectId]
  7824.                   };
  7825.                   let p = 0;
  7826.                   try {
  7827.                     if (ct_clients_[objectId] === w) {
  7828.                       w && "function" === typeof w.dispose && w.dispose();
  7829.                       delete ct_clients_[objectId];
  7830.                       delete ct_handles_[objectId];
  7831.                       p = 1;
  7832.                     } else {
  7833.                       // w && "function" === typeof w.dispose && w.dispose();
  7834.                       // delete ct_clients_[objectId];
  7835.                       // delete ct_handles_[objectId];
  7836.                       p = 2;
  7837.                     }
  7838.                   } catch (e) {
  7839.                     console.warn(e);
  7840.                   }
  7841.                   console.log(`unsubscribed: ${p}`, this, o);
  7842.                 }
  7843.               });
  7844.               ct_handles_[objectId] = qta;
  7845.               if (pzw === 0) {
  7846.                 pzw = requestAnimationFrame(rafHandlerFn);
  7847.               }
  7848.             }
  7849.           }
  7850.  
  7851.  
  7852.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  7853.  
  7854.         } else {
  7855.  
  7856.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  7857.         }
  7858.  
  7859.         console.log("[End]");
  7860.  
  7861.         console.groupEnd();
  7862.  
  7863.       }
  7864.  
  7865.  
  7866.  
  7867.       /*
  7868.  
  7869.  
  7870.               a.prototype.async = function(e, h) {
  7871.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  7872.               }
  7873.               ;
  7874.               a.prototype.cancelAsync = function(e) {
  7875.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  7876.               }
  7877.  
  7878.       */
  7879.  
  7880.  
  7881.  
  7882.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  7883.  
  7884.         let __dummyManager__ = null;
  7885.  
  7886.         mightFirstCheckOnYtInit();
  7887.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  7888.         console.log("[Begin]");
  7889.         (() => {
  7890.  
  7891.           const tag = "yt-invalidation-continuation"
  7892.           const dummy = document.createElement(tag);
  7893.  
  7894.           const cProto = getProto(dummy);
  7895.           if (!cProto || !cProto.attached) {
  7896.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7897.             return;
  7898.           }
  7899.  
  7900.           const dummyManager = (dummy.inst || dummy).manager_ || 0;
  7901.           __dummyManager__ = dummyManager;
  7902.  
  7903.           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) {
  7904.  
  7905.  
  7906.             const rafHub = new RAFHub();
  7907.  
  7908.             rafHub.keepRAF = true;
  7909.             cProto.async71 = cProto.async;
  7910.             cProto.cancelAsync71 = cProto.cancelAsync;
  7911.  
  7912.             // mostly for subscription timeoutMs 10000ms
  7913.             let mcw = 1; // 1, 3, 5, ...
  7914.             let arr = new Map();
  7915.  
  7916.             let __asyncInited__ = 0;
  7917.             let __timeoutStartId__ = null;
  7918.             const __asyncInit__ = () => {
  7919.  
  7920.               if (__asyncInited__) return;
  7921.               __asyncInited__ = 1;
  7922.  
  7923.               __timeoutStartId__ = setTimeout(() => { });
  7924.               mcw = __timeoutStartId__ * 2 + 1;
  7925.  
  7926.               setInterval(() => {
  7927.  
  7928.                 if (!arr.length) return;
  7929.  
  7930.                 const p = Date.now();
  7931.                 let deleteKeys = [];
  7932.                 arr.forEach((entry, key) => {
  7933.  
  7934.  
  7935.                   if (entry.cid === -1) {
  7936.                     entry.cid = -2;
  7937.                   } else if (entry.cid === -2) {
  7938.  
  7939.                     let offset = p - entry.add
  7940.                     if (offset < 0) offset = 0;
  7941.                     let delay2 = entry.delay - offset;
  7942.                     if (delay2 < 0) delay2 = 0;
  7943.                     entry.cid = setTimeout(entry.q(), delay2);
  7944.                     entry.q = null;
  7945.  
  7946.                   } else if (entry.add + entry.delay < p) {
  7947.                     deleteKeys.push(key);
  7948.  
  7949.                   }
  7950.  
  7951.                 })
  7952.  
  7953.                 for (const key of deleteKeys) arr.delete(key);
  7954.  
  7955.               }, 2000)
  7956.  
  7957.             }
  7958.  
  7959.  
  7960.  
  7961.  
  7962.             cProto.async = function (e, h) {
  7963.  
  7964.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  7965.  
  7966.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  7967.  
  7968.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  7969.  
  7970.  
  7971.               if (!this.__asyncInited__) {
  7972.                 this.__asyncInited__ = 1;
  7973.                 __asyncInit__();
  7974.               }
  7975.               mcw += 2; // 2K+3, 2K+4, ...
  7976.               if (mcw > 1e9) mcw = mcw % 1e4;
  7977.               const cid = mcw;
  7978.               const q = () => {
  7979.                 return () => {
  7980.                   console.log('async h > 8000');
  7981.                   e.call(this);
  7982.                 }
  7983.               }
  7984.               // setTimeout(q, delay)
  7985.               arr.set(cid, {
  7986.                 cid: -1, // -1 -> -2 -> cid
  7987.                 add: Date.now(),
  7988.                 q,
  7989.                 delay: h
  7990.               });
  7991.               // console.log('cid-async', cid)
  7992.               return cid;
  7993.  
  7994.             }
  7995.  
  7996.  
  7997.             cProto.cancelAsync = function (e) {
  7998.  
  7999.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  8000.  
  8001.               // console.log('cid-unasync', e)
  8002.  
  8003.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  8004.  
  8005.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  8006.  
  8007.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  8008.  
  8009.                 if (!arr.has(e)) return; // duplciated cancel
  8010.  
  8011.                 const entry = arr.get(e);
  8012.                 if (entry.cid < 0) {
  8013.                   entry.cid = 0;
  8014.                   arr.delete(e);
  8015.                 } else {
  8016.                   clearTimeout(entry.cid); // cid >= 1
  8017.                   entry.cid = 0;
  8018.                   arr.delete(e);
  8019.                 }
  8020.  
  8021.               } else {
  8022.  
  8023.                 return this.cancelAsync71(e);
  8024.  
  8025.               }
  8026.  
  8027.             }
  8028.  
  8029.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  8030.  
  8031.           } else {
  8032.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  8033.  
  8034.           }
  8035.  
  8036.         })();
  8037.  
  8038.         console.log("[End]");
  8039.  
  8040.         console.groupEnd();
  8041.  
  8042.  
  8043.  
  8044.         onManagerFound(__dummyManager__);
  8045.  
  8046.       }).catch(console.warn);
  8047.  
  8048.  
  8049.  
  8050.  
  8051.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  8052.  
  8053.  
  8054.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  8055.  
  8056.  
  8057.           mightFirstCheckOnYtInit();
  8058.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  8059.           console.log("[Begin]");
  8060.           (() => {
  8061.  
  8062.             const tag = "yt-live-interactivity-component-background"
  8063.             const dummy = document.createElement(tag);
  8064.  
  8065.             const cProto = getProto(dummy);
  8066.             if (!cProto || !cProto.attached) {
  8067.               console.warn(`proto.attached for ${tag} is unavailable.`);
  8068.               return;
  8069.             }
  8070.  
  8071.  
  8072.             cProto.__toStopAfterRun__ = function (hostElement) {
  8073.               let mo = new MutationObserver(() => {
  8074.                 mo.disconnect();
  8075.                 mo.takeRecords();
  8076.                 mo = null;
  8077.                 this.lottieAnimation && this.lottieAnimation.stop(); // primary
  8078.                 foregroundPromiseFn().then(() => { // if the lottieAnimation is started with rAf triggering
  8079.                   this.lottieAnimation && this.lottieAnimation.stop(); // fallback
  8080.                 });
  8081.               });
  8082.               mo.observe(hostElement, { subtree: true, childList: true });
  8083.             }
  8084.  
  8085.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  8086.  
  8087.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  8088.               cProto.maybeLoadAnimationBackground = function () {
  8089.                 let toRun = true;
  8090.                 let stopAfterRun = false;
  8091.                 if (!this.__bypassDisableAnimationBackground__) {
  8092.                   let doFix = false;
  8093.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  8094.                     if (!this.lottieAnimation) {
  8095.                       doFix = true;
  8096.                     }
  8097.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  8098.                     doFix = true;
  8099.                   }
  8100.                   if (doFix) {
  8101.                     if (this.useAnimationBackground === true) {
  8102.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  8103.                     }
  8104.                     toRun = true;
  8105.                     stopAfterRun = true;
  8106.                   }
  8107.                 }
  8108.                 if (toRun) {
  8109.                   if (stopAfterRun && (this.hostElement instanceof HTMLElement)) {
  8110.                     this.__toStopAfterRun__(this.hostElement); // primary
  8111.                   }
  8112.                   const r = this.maybeLoadAnimationBackground77.apply(this, arguments);
  8113.                   if (stopAfterRun && this.lottieAnimation) {
  8114.                     this.lottieAnimation.stop(); // fallback if no mutation
  8115.                   }
  8116.                   return r;
  8117.                 }
  8118.               }
  8119.  
  8120.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  8121.  
  8122.             } else {
  8123.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  8124.  
  8125.             }
  8126.  
  8127.           })();
  8128.  
  8129.           console.log("[End]");
  8130.  
  8131.           console.groupEnd();
  8132.  
  8133.  
  8134.         }).catch(console.warn);
  8135.  
  8136.       }
  8137.  
  8138.  
  8139.     }
  8140.  
  8141.  
  8142.  
  8143.  
  8144.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  8145.  
  8146.     const fixJsonParse = () => {
  8147.  
  8148.       let p1 = window.onerror;
  8149.  
  8150.       try {
  8151.         JSON.parse("{}");
  8152.       } catch (e) {
  8153.         console.warn(e);
  8154.       }
  8155.  
  8156.       let p2 = window.onerror;
  8157.  
  8158.       if (p1 !== p2) {
  8159.  
  8160.  
  8161.         console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | JS Engine Issue Found"}`,
  8162.           "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  8163.           "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  8164.         );
  8165.  
  8166.         console.warn("\nJSON.parse is hacked (e.g. Brave's script injection) which causes window.onerror changes on every JSON.parse call.\nPlease install https://greasyfork.org/scripts/473972-youtube-js-engine-tamer to fix the issue.\n");
  8167.  
  8168.         console.groupEnd();
  8169.  
  8170.       }
  8171.  
  8172.     }
  8173.  
  8174.     if (CHECK_JSONPRUNE) {
  8175.       promiseForCustomYtElementsReady.then(fixJsonParse);
  8176.     }
  8177.  
  8178.   });
  8179.  
  8180.  
  8181.  
  8182. })({ IntersectionObserver });