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YouTube 超快聊天

YouTube直播聊天的终极性能提升

目前为 2023-12-31 提交的版本。查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.60.38
  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://update.greasyfork.org/scripts/475632/1252746/ytConfigHacks.js
  19. //
  20. // @compatible          firefox Violentmonkey
  21. // @compatible          firefox Tampermonkey
  22. // @compatible          firefox FireMonkey
  23. // @compatible          chrome Violentmonkey
  24. // @compatible          chrome Tampermonkey
  25. // @compatible          opera Violentmonkey
  26. // @compatible          opera Tampermonkey
  27. // @compatible          safari Stay
  28. // @compatible          edge Violentmonkey
  29. // @compatible          edge Tampermonkey
  30. // @compatible          brave Violentmonkey
  31. // @compatible          brave Tampermonkey
  32. //
  33. // @description         Ultimate Performance Boost for YouTube Live Chats
  34. // @description:ja      YouTubeのライブチャットの究極のパフォーマンスブースト
  35. // @description:zh-TW   YouTube直播聊天的終極性能提升
  36. // @description:zh-CN   YouTube直播聊天的终极性能提升
  37. //
  38. // ==/UserScript==
  39.  
  40. ((__CONTEXT__) => {
  41.   'use strict';
  42.  
  43.   const 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 NO_ITEM_TAP_FOR_NON_STATIONARY_TAP = true;                // dont open the menu (e.g. text message) if cursor is moved or long press
  136.   const TAP_ACTION_DURATION = 280;                                // exceeding 280ms would not consider as a tap action
  137.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true;             // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  138.   // const FIX_MENU_CAPTURE_SCROLL = true;
  139.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;                      // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  140.  
  141.   const RAF_FIX_keepScrollClamped = true;
  142.   const RAF_FIX_scrollIncrementally = 2;                          // 0: no action; 1: basic fix; 2: also fix scroll position
  143.  
  144.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  145.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  146.  
  147.   const CHECK_JSONPRUNE = true;                        // This is a bug in Brave
  148.   // << end >>
  149.  
  150.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  151.  
  152.   const CHANGE_DATA_FLUSH_ASYNC = false;
  153.   // CHANGE_DATA_FLUSH_ASYNC is disabled due to bug report: https://greasyfork.org/scripts/469878-youtube-super-fast-chat/discussions/199479
  154.   // to be further investigated
  155.  
  156.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  157.  
  158.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  159.   // 0 = default Yt animation background [= no fix];
  160.   // 1 = disable default animation background [= keep special animation];
  161.   // 2 = disable all animation backgrounds [= no animation backbround]
  162.  
  163.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  164.  
  165.   const MAX_TOOLTIP_NO_WRAP_WIDTH = '72vw'; // '' for disable; accept values like '60px', '25vw'
  166.  
  167.   const AMEND_TICKER_handleLiveChatAction = true; // to fix ticker duplication and unresponsively fast ticker generation
  168.  
  169.   const ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION = true;
  170.   const ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME = true;
  171.   const FIX_BATCH_TICKER_ORDER = true;
  172.  
  173.   const DISABLE_Translation_By_Google = true;
  174.  
  175.   const FASTER_ICON_RENDERING = true;
  176.  
  177.   const DELAY_FOCUSEDCHANGED = true;
  178.  
  179.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  180.   /*
  181.  
  182.     ### Time Approach
  183.  
  184.     // all below values can make the time interval > 250ms
  185.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  186.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  187.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  188.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  189.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  190.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  191.  
  192.     ### Pixel Check
  193.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  194.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  195.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  196.  
  197.     ### Example - totalDuration = 280000
  198.     totalDuration 280000
  199.     stepInterval 0.5
  200.     numOfSteps = Math.round(100 / stepInterval) = 200
  201.     time interval = 280000 / 200 = 1400ms <acceptable>
  202.  
  203.     ### Example - totalDuration = 18000
  204.     totalDuration 18000
  205.     stepInterval 5
  206.     numOfSteps = Math.round(100 / stepInterval) = 20
  207.     time interval = 18000 / 20 = 900ms <acceptable>
  208.  
  209.     ### Example - totalDuration = 5000
  210.     totalDuration 5000
  211.     stepInterval 5
  212.     numOfSteps = Math.round(100 / stepInterval) = 20
  213.     time interval = 5000 / 20 = 250ms <threshold value>
  214.  
  215.     ### Example - totalDuration = 3600
  216.     totalDuration 3600
  217.     stepInterval 5
  218.     numOfSteps = Math.round(100 / stepInterval) = 20
  219.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  220.  
  221.   */
  222.  
  223.   // =======================================================================================================
  224.  
  225.   // AUTOMAICALLY DETERMINED
  226.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  227.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  228.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  229.   let runTickerClassName = 'run-ticker';
  230.  
  231.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  232.   /*
  233.     WebP: data:image/webp;base64,UklGRjAB
  234.     PNG: data:image/png;base64,iVBORw0KGg==
  235.     JPEG: data:image/jpeg;base64,/9j/4AA=
  236.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  237.     BMP: data:image/bmp;base64,Qk1oAAAA
  238.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  239.  
  240.     WebP: data:image/webp;base64,AAAAAAA=
  241.     PNG:  data:image/png;base64,AAAAAAA=
  242.     JPEG: data:image/jpeg;base64,AAAAAAA=
  243.     GIF:  data:image/gif;base64,AAAAAAA=
  244.     BMP:  data:image/bmp;base64,AAAAAAA=
  245.  
  246.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  247.  
  248.  
  249.   */
  250.  
  251.   // image sizing code
  252.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  253.  
  254.  
  255.   //   function KC(a, b, c, d) {
  256.   //     d = void 0 === d ? "width" : d;
  257.   //     if (!a || !a.length)
  258.   //         return null;
  259.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  260.   //         var e = window.devicePixelRatio;
  261.   //         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"));
  262.   //         HC = e
  263.   //     } else
  264.   //         HC || (HC = window.devicePixelRatio);
  265.   //     e = HC;
  266.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  267.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  268.   //         return a[0].url || null;
  269.   //     e = a.length;
  270.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  271.   //         return a[e - 1].url || null;
  272.   //     if (c)
  273.   //         for (var h = 0; h < e; h++)
  274.   //             if (0 <= a[h].url.indexOf(c))
  275.   //                 return a[h].url || null;
  276.   //     for (c = 0; c < e; c++)
  277.   //         if (a[c][d] >= b)
  278.   //             return a[c].url || null;
  279.   //     for (b = e - 1; 0 < b; b--)
  280.   //         if (a[b][d])
  281.   //             return a[b].url || null;
  282.   //     return a[0].url || null
  283.   // }
  284.  
  285.   const { IntersectionObserver } = __CONTEXT__;
  286.  
  287.   /** @type {globalThis.PromiseConstructor} */
  288.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  289.  
  290.   // let jsonParseFix = null;
  291.  
  292.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  293.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  294.  
  295.   // necessity of cssText3_smooth_transform_position to be checked.
  296.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  297.  
  298.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  299.         position: static !important;
  300.     }
  301.  
  302.   `: '';
  303.  
  304.   // fallback if dummy style fn fails
  305.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  306.  
  307.     /* optional */
  308.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  309.         height: auto !important;
  310.         min-height: unset !important;
  311.     }
  312.  
  313.     #items.style-scope.yt-live-chat-item-list-renderer {
  314.         transform: translateY(0px) !important;
  315.     }
  316.  
  317.     /* optional */
  318.  
  319.   `: '';
  320.  
  321.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  322.  
  323.     /* ------------------------------------------------------------------------------------------------------------- */
  324.  
  325.     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 {
  326.         contain: layout style;
  327.     }
  328.  
  329.     #items.style-scope.yt-live-chat-item-list-renderer {
  330.         contain: layout paint style;
  331.     }
  332.  
  333.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  334.         contain: style;
  335.     }
  336.  
  337.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  338.         contain: size style;
  339.     }
  340.  
  341.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  342.         contain: size layout paint style;
  343.     }
  344.  
  345.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  346.         contain: layout paint style;
  347.     }
  348.  
  349.     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 {
  350.         contain: layout style;
  351.     }
  352.  
  353.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  354.         contain: layout paint style;
  355.     }
  356.  
  357.     /* ------------------------------------------------------------------------------------------------------------- */
  358.  
  359.   ` : '';
  360.  
  361.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  362.  
  363.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  364.         top: 4px;
  365.         transition-property: top;
  366.         bottom: unset;
  367.     }
  368.  
  369.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  370.         top: -42px;
  371.     }
  372.  
  373.   `: '';
  374.  
  375.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  376.  
  377.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  378.         contain: layout style;
  379.     }
  380.  
  381.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  382.         overflow: visible;
  383.     }
  384.  
  385.   `: '';
  386.  
  387.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  388.  
  389.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  390.         --yt-live-chat-action-panel-top-border: none;
  391.     }
  392.  
  393.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  394.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  395.     }
  396.  
  397.     html #panel-pages.yt-live-chat-renderer {
  398.         border-top: 0;
  399.         border-bottom: 0;
  400.     }
  401.  
  402.   `: '';
  403.  
  404.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  405.  
  406.     img,
  407.     yt-img-shadow[height][width],
  408.     yt-img-shadow {
  409.         content-visibility: visible !important;
  410.     }
  411.  
  412.   `  : '';
  413.  
  414.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  415.  
  416.     /* remove YouTube constant will-change */
  417.     /* constant value will slow down the performance; default auto */
  418.  
  419.     /* www-player.css */
  420.     html .ytp-contextmenu,
  421.     html .ytp-settings-menu {
  422.         will-change: unset;
  423.     }
  424.  
  425.     /* frequently matched elements */
  426.     html .fill.yt-interaction,
  427.     html .stroke.yt-interaction,
  428.     html .yt-spec-touch-feedback-shape__fill,
  429.     html .yt-spec-touch-feedback-shape__stroke {
  430.         will-change: unset;
  431.     }
  432.  
  433.     /* live_chat_polymer.js */
  434.     /*
  435.     html .toggle-button.tp-yt-paper-toggle-button,
  436.     html #primaryProgress.tp-yt-paper-progress,
  437.     html #secondaryProgress.tp-yt-paper-progress,
  438.     html #onRadio.tp-yt-paper-radio-button,
  439.     html .fill.yt-interaction,
  440.     html .stroke.yt-interaction,
  441.     html .yt-spec-touch-feedback-shape__fill,
  442.     html .yt-spec-touch-feedback-shape__stroke {
  443.         will-change: unset;
  444.     }
  445.     */
  446.  
  447.     /* desktop_polymer_enable_wil_icons.js */
  448.     /* html .fill.yt-interaction,
  449.     html .stroke.yt-interaction, */
  450.     html tp-yt-app-header::before,
  451.     html tp-yt-iron-list,
  452.     html #items.tp-yt-iron-list > *,
  453.     html #onRadio.tp-yt-paper-radio-button,
  454.     html .toggle-button.tp-yt-paper-toggle-button,
  455.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  456.     html #items.ytd-post-multi-image-renderer,
  457.     html #items.ytd-horizontal-card-list-renderer,
  458.     html #items.yt-horizontal-list-renderer,
  459.     html #left-arrow.yt-horizontal-list-renderer,
  460.     html #right-arrow.yt-horizontal-list-renderer,
  461.     html #items.ytd-video-description-infocards-section-renderer,
  462.     html #items.ytd-video-description-music-section-renderer,
  463.     html #chips.ytd-feed-filter-chip-bar-renderer,
  464.     html #chips.yt-chip-cloud-renderer,
  465.     html #items.ytd-merch-shelf-renderer,
  466.     html #items.ytd-product-details-image-carousel-renderer,
  467.     html ytd-video-preview,
  468.     html #player-container.ytd-video-preview,
  469.     html #primaryProgress.tp-yt-paper-progress,
  470.     html #secondaryProgress.tp-yt-paper-progress,
  471.     html ytd-miniplayer[enabled] /* ,
  472.     html .yt-spec-touch-feedback-shape__fill,
  473.     html .yt-spec-touch-feedback-shape__stroke */ {
  474.         will-change: unset;
  475.     }
  476.  
  477.     /* other */
  478.     .ytp-videowall-still-info-content[class],
  479.     .ytp-suggestion-image[class] {
  480.         will-change: unset !important;
  481.     }
  482.  
  483.   ` : '';
  484.  
  485.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  486.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  487.  
  488.     elzm-fonts {
  489.         visibility: collapse;
  490.         position: fixed;
  491.         top: -10px;
  492.         left: -10px;
  493.         font-size: 10pt;
  494.         line-height: 100%;
  495.         width: 100px;
  496.         height: 100px;
  497.         transform: scale(0.1);
  498.         transform: scale(0.01);
  499.         transform: scale(0.001);
  500.         transform-origin: 0 0;
  501.         contain: strict;
  502.         display: block;
  503.  
  504.         pointer-events: none !important;
  505.         user-select: none !important;
  506.     }
  507.  
  508.     elzm-fonts[id]#elzm-fonts-yk75g {
  509.         user-select: none !important;
  510.         pointer-events: none !important;
  511.     }
  512.  
  513.     elzm-font {
  514.         visibility: collapse;
  515.         position: absolute;
  516.         line-height: 100%;
  517.         width: 100px;
  518.         height: 100px;
  519.         contain: strict;
  520.         display: block;
  521.  
  522.         user-select: none !important;
  523.         pointer-events: none !important;
  524.     }
  525.  
  526.     elzm-font::before {
  527.         visibility: collapse;
  528.         position: absolute;
  529.         line-height: 100%;
  530.         width: 100px;
  531.         height: 100px;
  532.         contain: strict;
  533.         display: block;
  534.  
  535.         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';
  536.  
  537.         user-select: none !important;
  538.         pointer-events: none !important;
  539.     }
  540.  
  541.   `: '';
  542.  
  543.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  544.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  545.         -webkit-backdrop-filter: none;
  546.         backdrop-filter: none;
  547.     }
  548.   `: '';
  549.  
  550.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  551.  
  552.     @keyframes blinker-miuzp {
  553.         0%, 60%, 100% {
  554.             opacity: 1;
  555.         }
  556.         30% {
  557.             opacity: 0.6;
  558.         }
  559.     }
  560.  
  561.     yt-icon-button#show-more.has-new-messages-miuzp {
  562.         animation: blinker-miuzp 1.74s linear infinite;
  563.     }
  564.  
  565.   `: '';
  566.  
  567.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  568.  
  569.     yt-live-chat-paid-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  570.       pointer-events: none !important;
  571.     }
  572.  
  573.     yt-live-chat-membership-item-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  574.       pointer-events: none !important;
  575.     }
  576.  
  577.     yt-live-chat-paid-sticker-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  578.       pointer-events: none !important;
  579.     }
  580.  
  581.     yt-live-chat-text-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  582.       pointer-events: none !important; /* TO_BE_REVIEWED */
  583.     }
  584.  
  585.     yt-live-chat-auto-mod-message-renderer.yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  586.       pointer-events: none !important;
  587.     }
  588.  
  589.   `: '';
  590.  
  591.   const cssText12_nowrap_tooltip = MAX_TOOLTIP_NO_WRAP_WIDTH && typeof MAX_TOOLTIP_NO_WRAP_WIDTH === 'string' ? `
  592.  
  593.  
  594.     tp-yt-paper-tooltip[role="tooltip"] {
  595.       box-sizing: content-box !important;
  596.       margin: 0px !important;
  597.       padding: 0px !important;
  598.       contain: none !important;
  599.     }
  600.  
  601.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"] {
  602.       box-sizing: content-box !important;
  603.       display: inline-block;
  604.       contain: none !important;
  605.     }
  606.  
  607.  
  608.     tp-yt-paper-tooltip[role="tooltip"] #tooltip[style-target="tooltip"]{
  609.       max-width: ${MAX_TOOLTIP_NO_WRAP_WIDTH};
  610.       width: max-content;
  611.       text-overflow: ellipsis;
  612.       overflow: hidden;
  613.       white-space: nowrap;
  614.     }
  615.  
  616.  
  617.   `: '';
  618.  
  619.  
  620.   const cssText13_no_text_select_when_menu_visible = `
  621.     [menu-visible] {
  622.       --sfc47-text-select: none;
  623.     }
  624.     [menu-visible] #header[id][class],
  625.     [menu-visible] #content[id][class],
  626.     [menu-visible] #header[id][class] *,
  627.     [menu-visible] #content[id][class] * {
  628.       user-select: var(--sfc47-text-select) !important;
  629.     }
  630.     [menu-visible] #menu {
  631.       --sfc47-text-select: inherit;
  632.     }
  633.   `
  634.  
  635.  
  636.   const addCss = () => `
  637.  
  638.     @property --ticker-rtime {
  639.       syntax: "<percentage>";
  640.       inherits: false;
  641.       initial-value: 0%;
  642.     }
  643.  
  644.     /*
  645.     .run-ticker {
  646.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  647.     }
  648.  
  649.     .run-ticker-test {
  650.       background: #00000001;
  651.     }
  652.  
  653.     .run-ticker-forced,
  654.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  655.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  656.     {
  657.       background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  658.     }
  659.     */
  660.  
  661.     .run-ticker {
  662.       --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  663.     }
  664.  
  665.     .run-ticker,
  666.     yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  667.     yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  668.     {
  669.       background: var(--ticker-bg) !important;
  670.     }
  671.  
  672.     yt-live-chat-ticker-dummy777-item-renderer {
  673.       background: #00000001;
  674.     }
  675.  
  676.     yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  677.       position: fixed !important;
  678.       top: -1000px !important;
  679.       left: -1000px !important;
  680.       font-size: 1px !important;
  681.       color: transparent !important;
  682.       pointer-events: none !important;
  683.       z-index: -1 !important;
  684.       contain: strict !important;
  685.       box-sizing: border-box !important;
  686.       pointer-events: none !important;
  687.       user-select: none !important;
  688.       max-width: 1px !important;
  689.       max-height: 1px !important;
  690.       overflow: hidden !important;
  691.       visibility: collapse !important;
  692.       display: none !important;
  693.     }
  694.  
  695.     yt-live-chat-ticker-dummy777-item-renderer #container {
  696.       background: inherit;
  697.     }
  698.  
  699.  
  700.     ${cssText8_fonts_pre_render}
  701.  
  702.     ${cssText9_no_backdrop_filter_when_menu_shown}
  703.  
  704.     @supports (contain: layout paint style) {
  705.  
  706.       ${cssText5}
  707.  
  708.     }
  709.  
  710.     @supports (color: var(--general)) {
  711.  
  712.       html {
  713.           --yt-live-chat-item-list-renderer-padding: 0px 0px;
  714.       }
  715.  
  716.       ${cssText3_smooth_transform_position}
  717.  
  718.       ${cssText7c_will_change_unset}
  719.  
  720.       ${cssText7b_content_visibility_unset}
  721.  
  722.       yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  723.           overflow-y: scroll;
  724.           padding-right: 0;
  725.       }
  726.  
  727.       ${cssText4_smooth_transform_forced_props}
  728.  
  729.       yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  730.           pointer-events: none !important;
  731.       }
  732.  
  733.       #continuations, #continuations * {
  734.           contain: strict;
  735.           position: fixed;
  736.           top: 2px;
  737.           height: 1px;
  738.           width: 2px;
  739.           height: 1px;
  740.           visibility: collapse;
  741.       }
  742.  
  743.       ${cssText6b_show_more_button}
  744.  
  745.       ${cssText6d_input_panel_border}
  746.  
  747.       ${cssText6c_input_panel_overflow}
  748.  
  749.     }
  750.  
  751.  
  752.     @supports (overflow-anchor: auto) {
  753.  
  754.       .no-anchor * {
  755.           overflow-anchor: none;
  756.       }
  757.       .no-anchor > item-anchor {
  758.           overflow-anchor: auto;
  759.       }
  760.  
  761.       item-anchor {
  762.  
  763.           height:1px;
  764.           width: 100%;
  765.           transform: scaleY(0.00001);
  766.           transform-origin:0 0;
  767.           contain: strict;
  768.           opacity:0;
  769.           display:flex;
  770.           position:relative;
  771.           flex-shrink:0;
  772.           flex-grow:0;
  773.           margin-bottom:0;
  774.           overflow:hidden;
  775.           box-sizing:border-box;
  776.           visibility: visible;
  777.           content-visibility: visible;
  778.           contain-intrinsic-size: auto 1px;
  779.           pointer-events:none !important;
  780.  
  781.       }
  782.  
  783.       #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  784.           overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  785.       }
  786.  
  787.       html item-anchor {
  788.  
  789.           height: 1px;
  790.           width: 1px;
  791.           top: auto;
  792.           left: auto;
  793.           right: auto;
  794.           bottom: auto;
  795.           transform: translateY(-1px);
  796.           position: absolute;
  797.           z-index: -1;
  798.  
  799.       }
  800.  
  801.     }
  802.  
  803.     @supports (color: var(--pre-rendering)) {
  804.  
  805.       @keyframes dontRenderAnimation {
  806.           0% {
  807.               background-position-x: 3px;
  808.           }
  809.           100% {
  810.               background-position-x: 4px;
  811.           }
  812.       }
  813.  
  814.       .dont-render[class] {
  815.           /* visibility: collapse !important; */
  816.           /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  817.  
  818.           transform: scale(0.01) !important;
  819.           transform: scale(0.00001) !important;
  820.           transform: scale(0.0000001) !important;
  821.           transform-origin: 0 0 !important;
  822.           z-index: -1 !important;
  823.           contain: strict !important;
  824.           box-sizing: border-box !important;
  825.  
  826.           height: 1px !important;
  827.           height: 0.1px !important;
  828.           height: 0.01px !important;
  829.           height: 0.0001px !important;
  830.           height: 0.000001px !important;
  831.  
  832.           animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  833.  
  834.           pointer-events: none !important;
  835.           user-select: none !important;
  836.  
  837.       }
  838.  
  839.       #sk35z {
  840.         display: block !important;
  841.  
  842.         visibility: collapse !important;
  843.  
  844.         transform: scale(0.01) !important;
  845.         transform: scale(0.00001) !important;
  846.         transform: scale(0.0000001) !important;
  847.         transform-origin: 0 0 !important;
  848.         z-index: -1 !important;
  849.         contain: strict !important;
  850.         box-sizing: border-box !important;
  851.  
  852.         height: 1px !important;
  853.         height: 0.1px !important;
  854.         height: 0.01px !important;
  855.         height: 0.0001px !important;
  856.         height: 0.000001px !important;
  857.  
  858.         position: absolute !important;
  859.         top: -1000px !important;
  860.         left: -1000px !important;
  861.  
  862.       }
  863.  
  864.     }
  865.  
  866.     [rNgzQ] {
  867.       opacity: 0 !important;
  868.       pointer-events: none !important;
  869.     }
  870.  
  871.  
  872.     ${cssText10_show_more_blinker}
  873.  
  874.     ${cssText11_entire_message_clickable}
  875.  
  876.     ${cssText12_nowrap_tooltip}
  877.  
  878.     ${cssText13_no_text_select_when_menu_visible}
  879.  
  880.   `;
  881.  
  882.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  883.  
  884.   // Create a unique key for the script and check if it is already running
  885.   const hkey_script = 'mchbwnoasqph';
  886.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  887.   win[hkey_script] = true;
  888.  
  889.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  890.  
  891.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  892.     if (te4 < 3) {
  893.       setTimeout(() => { });
  894.       setTimeout(() => { });
  895.     }
  896.  
  897.   }
  898.  
  899.   const firstKey = (obj) => {
  900.     for (const key in obj) {
  901.       if (obj.hasOwnProperty(key)) return key;
  902.     }
  903.     return null;
  904.   }
  905.  
  906.   const firstObjectKey = (obj) => {
  907.     for (const key in obj) {
  908.       if (obj.hasOwnProperty(key) && typeof obj[key] === 'object') return key;
  909.     }
  910.     return null;
  911.   }
  912.  
  913.   function removeElementFromArray(arr, index) {
  914.     if (index >= 0 && index < arr.length) {
  915.       arr.splice(index, 1);
  916.     }
  917.   }
  918.  
  919.   function getRandomInt(a, b) {
  920.     // Ensure that 'a' and 'b' are integers
  921.     a = Math.ceil(a);
  922.     b = Math.floor(b);
  923.  
  924.     // Generate a random integer in the range [a, b]
  925.     return Math.floor(Math.random() * (b - a + 1)) + a;
  926.   }
  927.  
  928.   function deepCopy(obj, skipKeys) {
  929.     skipKeys = skipKeys || [];
  930.     if (!obj || typeof obj !== 'object') return obj;
  931.     if (Array.isArray(obj)) {
  932.       return obj.map(item => deepCopy(item, skipKeys));
  933.     }
  934.     const copy = {};
  935.     for (let key in obj) {
  936.       if (!skipKeys.includes(key)) {
  937.         copy[key] = deepCopy(obj[key], skipKeys);
  938.       }
  939.     }
  940.     return copy;
  941.   }
  942.  
  943.   class Mutex {
  944.  
  945.     constructor() {
  946.       this.p = Promise.resolve()
  947.     }
  948.  
  949.     /**
  950.      *  @param {(lockResolve: () => void)} f
  951.      */
  952.     lockWith(f) {
  953.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  954.     }
  955.  
  956.   }
  957.  
  958.   const PromiseExternal = ((resolve_, reject_) => {
  959.     const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  960.     return class PromiseExternal extends Promise {
  961.       constructor(cb = h) {
  962.         super(cb);
  963.         if (cb === h) {
  964.           /** @type {(value: any) => void} */
  965.           this.resolve = resolve_;
  966.           /** @type {(reason?: any) => void} */
  967.           this.reject = reject_;
  968.         }
  969.       }
  970.     };
  971.   })();
  972.  
  973.   /** @type {typeof PromiseExternal.prototype | null} */
  974.   let relayPromise = null;
  975.  
  976.  
  977.   /** @type {typeof PromiseExternal.prototype | null} */
  978.   let onPlayStateChangePromise = null;
  979.  
  980.  
  981.  
  982.   let playEventsStack = Promise.resolve();
  983.  
  984.  
  985.   let playerProgressChangedArg1 = null;
  986.   let playerProgressChangedArg2 = null;
  987.   let playerProgressChangedArg3 = null;
  988.  
  989.  
  990.   function dr(s) {
  991.     // reserved for future use
  992.     return s;
  993.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  994.   }
  995.  
  996.   const insp = o => o ? (o.polymerController || o.inst || o || 0) : (o || 0);
  997.   const indr = o => insp(o).$ || o.$ || 0;
  998.  
  999.   const getProto = (element) => {
  1000.     if (element) {
  1001.       const cnt = insp(element);
  1002.       return cnt.constructor.prototype || null;
  1003.     }
  1004.     return null;
  1005.   }
  1006.  
  1007.   const assertor = (f) => f() || console.assert(false, f + "");
  1008.  
  1009.   const fnIntegrity = (f, d) => {
  1010.     if (!f || typeof f !== 'function') {
  1011.       console.warn('f is not a function', f);
  1012.       return;
  1013.     }
  1014.     let p = f + "", s = 0, j = -1, w = 0;
  1015.     for (let i = 0, l = p.length; i < l; i++) {
  1016.       const t = p[i];
  1017.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  1018.         if (j < i - 1) w++;
  1019.         j = i;
  1020.       } else {
  1021.         s++;
  1022.       }
  1023.     }
  1024.     let itz = `${f.length}.${s}.${w}`;
  1025.     if (!d) {
  1026.       return itz;
  1027.     } else if (itz !== d) {
  1028.       console.warn('fnIntegrity=false', itz);
  1029.       return false;
  1030.     } else {
  1031.       return true;
  1032.     }
  1033.   }
  1034.  
  1035.  
  1036.   const px2cm = (px) => px * window.devicePixelRatio * 0.026458333;
  1037.   const px2mm = (px) => px * window.devicePixelRatio * 0.26458333;
  1038.  
  1039.  
  1040.   ; (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) && (() => {
  1041.  
  1042.     const _config_ = () => {
  1043.       try {
  1044.         return ytcfg.data_;
  1045.       } catch (e) { }
  1046.       return null;
  1047.     };
  1048.  
  1049.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1050.  
  1051.       // console.log(700)
  1052.  
  1053.       if (!EXPERIMENT_FLAGS) return;
  1054.  
  1055.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1056.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1057.           // EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true; // timestamp toggle issue
  1058.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1059.           // console.log(701)
  1060.         }
  1061.       }
  1062.  
  1063.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1064.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1065.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1066.         // console.log(702);
  1067.       }
  1068.  
  1069.     };
  1070.  
  1071.     const uf = (config_) => {
  1072.       config_ = config_ || _config_();
  1073.       if (config_) {
  1074.         const { EXPERIMENT_FLAGS, EXPERIMENTS_FORCED_FLAGS } = config_;
  1075.         if (EXPERIMENT_FLAGS) {
  1076.           flagsFn(EXPERIMENT_FLAGS);
  1077.           if (EXPERIMENTS_FORCED_FLAGS) flagsFn(EXPERIMENTS_FORCED_FLAGS);
  1078.         }
  1079.       }
  1080.     }
  1081.  
  1082.     window._ytConfigHacks.add((config_) => {
  1083.       uf(config_);
  1084.     });
  1085.  
  1086.     uf();
  1087.  
  1088.   })();
  1089.  
  1090.   if (DISABLE_Translation_By_Google) {
  1091.  
  1092.     let mo = new MutationObserver(() => {
  1093.  
  1094.       if (!mo) return;
  1095.       let h = document.head;
  1096.       if (!h) return;
  1097.       mo.disconnect();
  1098.       mo.takeRecords();
  1099.       mo = null;
  1100.  
  1101.       let meta = document.createElement('meta');
  1102.       meta.setAttribute('name', 'google');
  1103.       meta.setAttribute('content', 'notranslate');
  1104.       h.appendChild(meta);
  1105.  
  1106.  
  1107.     });
  1108.     mo.observe(document, { subtree: true, childList: true });
  1109.   }
  1110.  
  1111.  
  1112.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  1113.  
  1114.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  1115.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  1116.   if (!isContainSupport) {
  1117.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  1118.   } else {
  1119.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  1120.   }
  1121.  
  1122.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  1123.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  1124.   if (!isOverflowAnchorSupport) {
  1125.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  1126.   } else {
  1127.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  1128.   }
  1129.  
  1130.   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.
  1131.  
  1132.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  1133.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  1134.  
  1135.   let hasTimerModified = null;
  1136.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  1137.  
  1138.   const fxOperator = (proto, propertyName) => {
  1139.     let propertyDescriptorGetter = null;
  1140.     try {
  1141.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  1142.     } catch (e) { }
  1143.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  1144.       try {
  1145.  
  1146.         return propertyDescriptorGetter.call(dr(e));
  1147.       } catch (e) { }
  1148.       return e[propertyName];
  1149.     } : (e) => e[propertyName];
  1150.   };
  1151.  
  1152.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  1153.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  1154.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  1155.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  1156.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  1157.  
  1158.   const groupCollapsed = (text1, text2) => {
  1159.  
  1160.     console.groupCollapsed(`%c${text1}%c${text2}`,
  1161.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  1162.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  1163.     );
  1164.   }
  1165.  
  1166.   // const microNow = () => performance.now() + (performance.timeOrigin || performance.timing.navigationStart);
  1167.  
  1168.  
  1169.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  1170.   const onRegistryReady = (callback) => {
  1171.     if (typeof customElements === 'undefined') {
  1172.       if (!('__CE_registry' in document)) {
  1173.         // https://github.com/webcomponents/polyfills/
  1174.         Object.defineProperty(document, '__CE_registry', {
  1175.           get() {
  1176.             // return undefined
  1177.           },
  1178.           set(nv) {
  1179.             if (typeof nv == 'object') {
  1180.               delete this.__CE_registry;
  1181.               this.__CE_registry = nv;
  1182.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  1183.             }
  1184.             return true;
  1185.           },
  1186.           enumerable: false,
  1187.           configurable: true
  1188.         })
  1189.       }
  1190.       let eventHandler = (evt) => {
  1191.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1192.         const f = callback;
  1193.         callback = null;
  1194.         eventHandler = null;
  1195.         f();
  1196.       };
  1197.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  1198.     } else {
  1199.       callback();
  1200.     }
  1201.   };
  1202.  
  1203.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  1204.  
  1205.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  1206.  
  1207.     return new Promise(resolve => {
  1208.  
  1209.       let ro = new ResizeObserver(entries => {
  1210.         if (entries && entries.length >= 1) {
  1211.           resolve();
  1212.           ro.disconnect();
  1213.           ro = null;
  1214.         }
  1215.       });
  1216.       ro.observe(sizingTarget);
  1217.  
  1218.  
  1219.  
  1220.     });
  1221.  
  1222.   } : (sizingTarget) => {
  1223.  
  1224.  
  1225.     return new Promise(resolve => {
  1226.  
  1227.       let io = new IntersectionObserver(entries => {
  1228.         if (entries && entries.length >= 1) {
  1229.           resolve();
  1230.           io.disconnect();
  1231.           io = null;
  1232.         }
  1233.       });
  1234.       io.observe(sizingTarget);
  1235.  
  1236.  
  1237.  
  1238.     });
  1239.  
  1240.   };
  1241.  
  1242.   /* globals WeakRef:false */
  1243.  
  1244.   /** @type {(o: Object | null) => WeakRef | null} */
  1245.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1246.  
  1247.   /** @type {(wr: Object | null) => Object | null} */
  1248.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1249.  
  1250.   const getLCRDummy = () => {
  1251.     // direct createElement or createComponent_ will make the emoji rendering crashed. reason TBC
  1252.  
  1253.     return Promise.all([customElements.whenDefined('yt-live-chat-app'), customElements.whenDefined('yt-live-chat-renderer')]).then(async () => {
  1254.  
  1255.       const tag = "yt-live-chat-renderer"
  1256.       let dummy = document.querySelector(tag);
  1257.       if (!dummy) {
  1258.  
  1259.         let mo = null;
  1260.  
  1261.         const ytLiveChatApp = document.querySelector('yt-live-chat-app') || document.createElement('yt-live-chat-app');
  1262.  
  1263.         const lcaProto = getProto(ytLiveChatApp);
  1264.  
  1265.         dummy = await new Promise(resolve => {
  1266.  
  1267.           if (typeof lcaProto.createComponent_ === 'function' && !lcaProto.createComponent99_) {
  1268.  
  1269.             lcaProto.createComponent99_ = lcaProto.createComponent_;
  1270.             lcaProto.createComponent98_ = function (a, b, c) {
  1271.               // (3) ['yt-live-chat-renderer', {…}, true]
  1272.               const r = this.createComponent99_.apply(this, arguments);
  1273.               if (a === 'yt-live-chat-renderer') {
  1274.                 resolve(r);
  1275.               }
  1276.               return r;
  1277.             };
  1278.             lcaProto.createComponent_ = lcaProto.createComponent98_;
  1279.  
  1280.           } else {
  1281.  
  1282.             mo = new MutationObserver(() => {
  1283.               const t = document.querySelector(tag);
  1284.               if (t) {
  1285.                 resolve(t);
  1286.               }
  1287.             });
  1288.             mo.observe(document, { subtree: true, childList: true })
  1289.           }
  1290.  
  1291.         });
  1292.  
  1293.         if (mo) {
  1294.           mo.disconnect();
  1295.           mo.takeRecords();
  1296.           mo = null;
  1297.         }
  1298.  
  1299.         if (lcaProto.createComponent99_ && lcaProto.createComponent_ && lcaProto.createComponent98_ === lcaProto.createComponent_) {
  1300.           lcaProto.createComponent_ = lcaProto.createComponent99_;
  1301.           lcaProto.createComponent99_ = null;
  1302.           lcaProto.createComponent98_ = null;
  1303.         }
  1304.  
  1305.       }
  1306.       return dummy;
  1307.  
  1308.     });
  1309.   }
  1310.  
  1311.   const { addCssManaged } = (() => {
  1312.  
  1313.     const addFontPreRendering = () => {
  1314.  
  1315.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1316.  
  1317.       let efsContainer = document.createElement('elzm-fonts');
  1318.       efsContainer.id = 'elzm-fonts-yk75g'
  1319.  
  1320.       const arr = [];
  1321.       let p = document.createElement('elzm-font');
  1322.       arr.push(p);
  1323.  
  1324.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1325.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1326.  
  1327.           p = document.createElement('elzm-font');
  1328.           p.style.fontWeight = size;
  1329.           arr.push(p);
  1330.         }
  1331.       }
  1332.  
  1333.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1334.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1335.  
  1336.           p = document.createElement('elzm-font');
  1337.           p.style.fontFamily = 'Roboto';
  1338.           p.style.fontWeight = size;
  1339.           arr.push(p);
  1340.         }
  1341.       }
  1342.  
  1343.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1344.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1345.  
  1346.           p = document.createElement('elzm-font');
  1347.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1348.           p.style.fontWeight = size;
  1349.           arr.push(p);
  1350.         }
  1351.       }
  1352.  
  1353.  
  1354.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1355.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1356.  
  1357.           p = document.createElement('elzm-font');
  1358.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1359.           p.style.fontWeight = size;
  1360.           arr.push(p);
  1361.         }
  1362.       }
  1363.  
  1364.  
  1365.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1366.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1367.  
  1368.           p = document.createElement('elzm-font');
  1369.           p.style.fontFamily = 'sans-serif';
  1370.           p.style.fontWeight = size;
  1371.           arr.push(p);
  1372.         }
  1373.       }
  1374.  
  1375.       console.log('number of elzm-font elements', arr.length);
  1376.  
  1377.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1378.  
  1379.       (document.body || document.documentElement).appendChild(efsContainer);
  1380.  
  1381.  
  1382.       console.log('elzm-font elements have been added to the page for rendering.');
  1383.  
  1384.       console.groupEnd();
  1385.  
  1386.     }
  1387.  
  1388.     let isCssAdded = false;
  1389.  
  1390.     function addCssElement() {
  1391.       let s = document.createElement('style');
  1392.       s.id = 'ewRvC';
  1393.       return s;
  1394.     }
  1395.  
  1396.     const addCssManaged = () => {
  1397.       if (!isCssAdded && document.documentElement && document.head) {
  1398.         isCssAdded = true;
  1399.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1400.         if (ENABLE_FONT_PRE_RENDERING) {
  1401.           Promise.resolve().then(addFontPreRendering)
  1402.         }
  1403.       }
  1404.     }
  1405.  
  1406.     return { addCssManaged };
  1407.   })();
  1408.  
  1409.  
  1410.   const { setupStyle } = (() => {
  1411.  
  1412.     const sp7 = Symbol();
  1413.  
  1414.     const proxyHelperFn = (dummy) => ({
  1415.  
  1416.       get(target, prop) {
  1417.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1418.       },
  1419.       set(target, prop, value) {
  1420.         if (!(prop in dummy)) {
  1421.           target[prop] = value;
  1422.         }
  1423.         return true;
  1424.       },
  1425.       has(target, prop) {
  1426.         return (prop in target);
  1427.       },
  1428.       deleteProperty(target, prop) {
  1429.         return true;
  1430.       },
  1431.       ownKeys(target) {
  1432.         return Object.keys(target);
  1433.       },
  1434.       defineProperty(target, key, descriptor) {
  1435.         return Object.defineProperty(target, key, descriptor);
  1436.       },
  1437.       getOwnPropertyDescriptor(target, key) {
  1438.         return Object.getOwnPropertyDescriptor(target, key);
  1439.       },
  1440.  
  1441.     });
  1442.  
  1443.     const setupStyle = (m1, m2) => {
  1444.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1445.  
  1446.       const dummy1v = {
  1447.         transform: '',
  1448.         height: '',
  1449.         minHeight: '',
  1450.         paddingBottom: '',
  1451.         paddingTop: ''
  1452.       };
  1453.  
  1454.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1455.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1456.         dummy1v[k] = dummyStyleFn(k);
  1457.       }
  1458.  
  1459.       const dummy1p = proxyHelperFn(dummy1v);
  1460.       const sp1v = new Proxy(m1.style, dummy1p);
  1461.       const sp2v = new Proxy(m2.style, dummy1p);
  1462.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1463.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1464.       m1.removeAttribute("style");
  1465.       m2.removeAttribute("style");
  1466.  
  1467.     }
  1468.  
  1469.     return { setupStyle };
  1470.  
  1471.   })();
  1472.  
  1473.  
  1474.  
  1475.   function setThumbnails(config) {
  1476.  
  1477.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1478.  
  1479.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1480.  
  1481.  
  1482.       if (thumbnails && thumbnails.length > 0) {
  1483.         if (flag0 > 0 && thumbnails.length > 1) {
  1484.           let pSize = 0;
  1485.           let newThumbnails = [];
  1486.           for (const thumbnail of thumbnails) {
  1487.             if (!thumbnail || !thumbnail.url) continue;
  1488.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1489.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1490.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1491.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1492.               newThumbnails.push(thumbnail);
  1493.               if (imageLinks) imageLinks.add(thumbnail.url);
  1494.             }
  1495.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1496.               pSize = thumbnail.width;
  1497.             }
  1498.           }
  1499.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1500.             baseObject.thumbnails = newThumbnails;
  1501.           } else {
  1502.             newThumbnails.length = 0;
  1503.           }
  1504.           newThumbnails = null;
  1505.         } else {
  1506.           for (const thumbnail of thumbnails) {
  1507.             if (thumbnail && thumbnail.url) {
  1508.               if (imageLinks) imageLinks.add(thumbnail.url);
  1509.             }
  1510.           }
  1511.         }
  1512.       }
  1513.  
  1514.     }
  1515.   }
  1516.  
  1517.   function fixLiveChatItem(item, imageLinks) {
  1518.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1519.     if (liveChatTextMessageRenderer) {
  1520.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1521.       if (messageRuns && messageRuns.length > 0) {
  1522.         for (const run of messageRuns) {
  1523.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1524.           setThumbnails({
  1525.             baseObject: emojiImage,
  1526.             thumbnails: emojiImage.thumbnails,
  1527.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1528.             imageLinks
  1529.           });
  1530.         }
  1531.       }
  1532.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1533.       setThumbnails({
  1534.         baseObject: authorPhoto,
  1535.         thumbnails: authorPhoto.thumbnails,
  1536.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1537.         imageLinks
  1538.       });
  1539.     }
  1540.   }
  1541.  
  1542.  
  1543.  
  1544.   let kptPF = null;
  1545.   const emojiPrefetched = new Set();
  1546.   const authorPhotoPrefetched = new Set();
  1547.  
  1548.   function linker(link, rel, href, _as) {
  1549.     return new Promise(resolve => {
  1550.       if (!link) link = document.createElement('link');
  1551.       link.rel = rel;
  1552.       if (_as) link.setAttribute('as', _as);
  1553.       link.onload = function () {
  1554.         resolve({
  1555.           link: this,
  1556.           success: true
  1557.         })
  1558.         this.remove();
  1559.       };
  1560.       link.onerror = function () {
  1561.         resolve({
  1562.           link: this,
  1563.           success: false
  1564.         });
  1565.         this.remove();
  1566.       };
  1567.       link.href = href;
  1568.       document.head.appendChild(link);
  1569.       link = null;
  1570.     });
  1571.   }
  1572.  
  1573.  
  1574.  
  1575.   const cleanContext = async (win) => {
  1576.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1577.     try {
  1578.       let mx = 16; // MAX TRIAL
  1579.       const frameId = 'vanillajs-iframe-v1';
  1580.       /** @type {HTMLIFrameElement | null} */
  1581.       let frame = document.getElementById(frameId);
  1582.       let removeIframeFn = null;
  1583.       if (!frame) {
  1584.         frame = document.createElement('iframe');
  1585.         frame.id = frameId;
  1586.         const blobURL = typeof webkitCancelAnimationFrame === 'function' ? (frame.src = URL.createObjectURL(new Blob([], { type: 'text/html' }))) : null; // avoid Brave Crash
  1587.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1588.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1589.         n.appendChild(frame);
  1590.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1591.         const root = document.documentElement;
  1592.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1593.         if (blobURL) Promise.resolve().then(() => URL.revokeObjectURL(blobURL));
  1594.  
  1595.         removeIframeFn = (setTimeout) => {
  1596.           const removeIframeOnDocumentReady = (e) => {
  1597.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1598.             e = n;
  1599.             n = win = removeIframeFn = 0;
  1600.             setTimeout ? setTimeout(() => e.remove(), 200) : e.remove();
  1601.           }
  1602.           if (!setTimeout || document.readyState !== 'loading') {
  1603.             removeIframeOnDocumentReady();
  1604.           } else {
  1605.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1606.           }
  1607.         }
  1608.       }
  1609.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1610.       const fc = frame.contentWindow;
  1611.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1612.       try {
  1613.         const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle } = fc;
  1614.         const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, getComputedStyle };
  1615.         for (let k in res) res[k] = res[k].bind(win); // necessary
  1616.         if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1617.  
  1618.         /** @type {HTMLElement} */
  1619.         const HTMLElementProto = fc.HTMLElement.prototype;
  1620.         /** @type {EventTarget} */
  1621.         const EventTargetProto = fc.EventTarget.prototype;
  1622.         // jsonParseFix = {
  1623.         //   _JSON: fc.JSON, _parse: fc.JSON.parse
  1624.         // }
  1625.         return {
  1626.           ...res,
  1627.           animate: HTMLElementProto.animate,
  1628.           addEventListener: EventTargetProto.addEventListener,
  1629.           removeEventListener: EventTargetProto.removeEventListener
  1630.         };
  1631.       } catch (e) {
  1632.         if (removeIframeFn) removeIframeFn();
  1633.         return null;
  1634.       }
  1635.     } catch (e) {
  1636.       console.warn(e);
  1637.       return null;
  1638.     }
  1639.   };
  1640.  
  1641.   cleanContext(win).then(__CONTEXT__ => {
  1642.     if (!__CONTEXT__) return null;
  1643.  
  1644.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate, getComputedStyle, addEventListener, removeEventListener } = __CONTEXT__;
  1645.  
  1646.  
  1647.     let foregroundPromise = null;
  1648.     const foregroundPromiseFn = () => (foregroundPromise = (foregroundPromise || new Promise(resolve => {
  1649.       requestAnimationFrame(() => {
  1650.         foregroundPromise = null;
  1651.         resolve();
  1652.       });
  1653.     })));
  1654.  
  1655.     let playerState = null;
  1656.     let _playerState = null;
  1657.     let lastPlayerProgress = null;
  1658.     let relayCount = 0;
  1659.     let playerEventsByIframeRelay = false;
  1660.     let isPlayProgressTriggered = false;
  1661.     let waitForInitialDataCompletion = 0;
  1662.  
  1663.  
  1664.  
  1665.     let aeConstructor = null;
  1666.  
  1667.     // << __openedChanged82 >>
  1668.     let currentMenuPivotWR = null;
  1669.  
  1670.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1671.     const beforeParticipantsMap = new WeakMap();
  1672.     // << end >>
  1673.  
  1674.  
  1675.  
  1676.     // << if onRegistryReadyForDOMOperations >>
  1677.  
  1678.     let dt0 = Date.now() - 2000;
  1679.     const dateNow = () => Date.now() - dt0;
  1680.     // let lastScroll = 0;
  1681.     // let lastLShow = 0;
  1682.     let lastWheel = 0;
  1683.     let lastMouseDown = 0;
  1684.     let lastMouseUp = 0;
  1685.     let currentMouseDown = false;
  1686.     let lastTouchDown = 0;
  1687.     let lastTouchUp = 0;
  1688.     let currentTouchDown = false;
  1689.     let lastUserInteraction = 0;
  1690.  
  1691.     let scrollChatFn = null;
  1692.  
  1693.     let skipDontRender = true; // true first; false by flushActiveItems_
  1694.     let allowDontRender = null;
  1695.  
  1696.     // ---- #items mutation ----
  1697.     let sk35zResolveFn = null;
  1698.     let firstList = true;
  1699.  
  1700.     // << end >>
  1701.  
  1702.     class RAFHub {
  1703.       constructor() {
  1704.         /** @type {number} */
  1705.         this.startAt = 8170;
  1706.         /** @type {number} */
  1707.         this.counter = 0;
  1708.         /** @type {number} */
  1709.         this.rid = 0;
  1710.         /** @type {Map<number, FrameRequestCallback>} */
  1711.         this.funcs = new Map();
  1712.         const funcs = this.funcs;
  1713.         /** @type {FrameRequestCallback} */
  1714.         this.bCallback = this.mCallback.bind(this);
  1715.         this.pClear = () => funcs.clear();
  1716.         this.keepRAF = false;
  1717.       }
  1718.       /** @param {DOMHighResTimeStamp} highResTime */
  1719.       mCallback(highResTime) {
  1720.         this.rid = 0;
  1721.         Promise.resolve().then(this.pClear);
  1722.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1723.       }
  1724.       /** @param {FrameRequestCallback} f */
  1725.       request(f) {
  1726.         if (this.counter > 1e9) this.counter = 9;
  1727.         let cid = this.startAt + (++this.counter);
  1728.         this.funcs.set(cid, f);
  1729.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1730.         return cid;
  1731.       }
  1732.       /** @param {number} cid */
  1733.       cancel(cid) {
  1734.         cid = +cid;
  1735.         if (cid > 0) {
  1736.           if (cid <= this.startAt) {
  1737.             return cancelAnimationFrame(cid);
  1738.           }
  1739.           if (this.rid > 0) {
  1740.             this.funcs.delete(cid);
  1741.             if (this.funcs.size === 0 && !this.keepRAF) {
  1742.               cancelAnimationFrame(this.rid);
  1743.               this.rid = 0;
  1744.             }
  1745.           }
  1746.         }
  1747.       }
  1748.     }
  1749.  
  1750.     function basePrefetching() {
  1751.  
  1752.       new Promise(resolve => {
  1753.  
  1754.         if (document.readyState !== 'loading') {
  1755.           resolve();
  1756.         } else {
  1757.           win.addEventListener("DOMContentLoaded", resolve, false);
  1758.         }
  1759.  
  1760.       }).then(() => {
  1761.         const hostL1 = [
  1762.           'https://www.youtube.com', 'https://googlevideo.com',
  1763.           'https://googleapis.com', 'https://accounts.youtube.com',
  1764.           'https://www.gstatic.com', 'https://ggpht.com',
  1765.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1766.         ];
  1767.  
  1768.         const hostL2 = [
  1769.           'https://youtube.com',
  1770.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1771.         ];
  1772.  
  1773.         let link = null;
  1774.  
  1775.         function kn() {
  1776.  
  1777.           link = document.createElement('link');
  1778.           if (link.relList && link.relList.supports) {
  1779.             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)
  1780.           } else {
  1781.             kptPF = 0;
  1782.           }
  1783.  
  1784.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1785.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1786.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1787.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1788.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1789.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1790.           console.groupEnd();
  1791.  
  1792.         }
  1793.  
  1794.         for (const h of hostL1) {
  1795.  
  1796.           if (kptPF === null) kn();
  1797.           if (ENABLE_BASE_PREFETCHING) {
  1798.             // if (kptPF & 1) {
  1799.             //   linker(link, 'dns-prefetch', h);
  1800.             //   link = null;
  1801.             // }
  1802.             if (kptPF & 2) {
  1803.               linker(link, 'preconnect', h);
  1804.               link = null;
  1805.             }
  1806.           }
  1807.         }
  1808.  
  1809.         for (const h of hostL2) {
  1810.           if (kptPF === null) kn();
  1811.           if (ENABLE_BASE_PREFETCHING) {
  1812.             if (kptPF & 1) {
  1813.               linker(link, 'dns-prefetch', h);
  1814.               link = null;
  1815.             }
  1816.           }
  1817.         }
  1818.  
  1819.       })
  1820.  
  1821.  
  1822.     }
  1823.  
  1824.     if (DO_LINK_PREFETCH) basePrefetching();
  1825.  
  1826.     const { notifyPath7081 } = (() => {
  1827.       // DO_PARTICIPANT_LIST_HACKS
  1828.  
  1829.       const mutexParticipants = new Mutex();
  1830.  
  1831.       let uvid = 0;
  1832.       let r95dm = 0;
  1833.       let c95dm = -1;
  1834.  
  1835.       const foundMap = (base, content) => {
  1836.         /*
  1837.           let lastSearch = 0;
  1838.           let founds = base.map(baseEntry => {
  1839.             let search = content.indexOf(baseEntry, lastSearch);
  1840.             if (search < 0) return false;
  1841.             lastSearch = search + 1;
  1842.             return true;
  1843.           });
  1844.           return founds;
  1845.         */
  1846.         const contentSet = new Set(content);
  1847.         return base.map(baseEntry => contentSet.has(baseEntry));
  1848.  
  1849.       }
  1850.  
  1851.  
  1852.  
  1853.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1854.  
  1855.         const handler1 = {
  1856.           get(target, prop, receiver) {
  1857.             if (prop === 'object') {
  1858.               return participants; // avoid memory leakage
  1859.             }
  1860.             if (prop === 'type') {
  1861.               return 'splice';
  1862.             }
  1863.             if (prop === '__proxy312__') return 1;
  1864.             return target[prop];
  1865.           }
  1866.         };
  1867.         const releaser = () => {
  1868.           participants = null;
  1869.         }
  1870.  
  1871.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1872.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1873.  
  1874.         let indexSplices = [];
  1875.         let contentUpdates = [];
  1876.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1877.           if (beforeParticipants[i] === participants[j]) {
  1878.             i++; j++;
  1879.           } else if (idsBefore[i] === idsAfter[j]) {
  1880.             // content changed
  1881.             contentUpdates.push({ indexI: i, indexJ: j })
  1882.             i++; j++;
  1883.           } else {
  1884.             let addedCount = 0;
  1885.             for (let q = j; q < foundsForAfter.length; q++) {
  1886.               if (foundsForAfter[q] === false) addedCount++;
  1887.               else break;
  1888.             }
  1889.             let removedCount = 0;
  1890.             for (let q = i; q < foundsForBefore.length; q++) {
  1891.               if (foundsForBefore[q] === false) removedCount++;
  1892.               else break;
  1893.             }
  1894.             if (!addedCount && !removedCount) {
  1895.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1896.             }
  1897.             indexSplices.push(new Proxy({
  1898.               index: j,
  1899.               addedCount: addedCount,
  1900.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1901.             }, handler1));
  1902.             i += removedCount;
  1903.             j += addedCount;
  1904.           }
  1905.         }
  1906.         foundsForBefore = null;
  1907.         foundsForAfter = null;
  1908.         idsBefore = null;
  1909.         idsAfter = null;
  1910.         beforeParticipants = null;
  1911.         return { indexSplices, contentUpdates, releaser };
  1912.  
  1913.       }
  1914.  
  1915.       /*
  1916.  
  1917.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1918.  
  1919.       VM63631:1 Error
  1920.       at customElements.get.notifyPath (<anonymous>:1:122)
  1921.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1922.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1923.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1924.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1925.       at ju (live_chat_polymer.js:1674:217)
  1926.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1927.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1928.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1929.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1930.  
  1931.       */
  1932.  
  1933.       function convertToIds(participants) {
  1934.         return participants.map(participant => {
  1935.           if (!participant || typeof participant !== 'object') {
  1936.             console.warn('Error(0xFA41): convertToIds', participant);
  1937.             return participant; // just in case
  1938.           }
  1939.           let keys = Object.keys(participant);
  1940.           // liveChatTextMessageRenderer
  1941.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1942.           // liveChatPaidMessageRenderer
  1943.           /*
  1944.  
  1945.             'yt-live-chat-participant-renderer' utilizes the following:
  1946.             authorName.simpleText: string
  1947.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1948.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1949.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1950.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1951.  
  1952.           */
  1953.           if (keys.length !== 1) {
  1954.             console.warn('Error(0xFA42): convertToIds', participant);
  1955.             return participant; // just in case
  1956.           }
  1957.           let key = keys[0];
  1958.           let renderer = (participant[key] || 0);
  1959.           let authorName = (renderer.authorName || 0);
  1960.           let text = `${authorName.simpleText || authorName.text}`
  1961.           let res = participant; // fallback if it is not a vaild entry
  1962.           if (typeof text !== 'string') {
  1963.             console.warn('Error(0xFA53): convertToIds', participant);
  1964.           } else {
  1965.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1966.             if (text.length > 1) res = text;
  1967.           }
  1968.           return res;
  1969.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1970.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1971.         });
  1972.       }
  1973.  
  1974.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1975.         // just update when content is changed.
  1976.         if (p1.authorName !== p2.authorName) return true;
  1977.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1978.         if (p1.authorBadges !== p2.authorBadges) return true;
  1979.         return false;
  1980.       } : (p1, p2) => {
  1981.         // keep integrity all the time.
  1982.         return p1 !== p2; // always true
  1983.       }
  1984.  
  1985.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1986.  
  1987.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1988.           if (path !== "participantsManager.participants") {
  1989.             return this.__notifyPath5036__.apply(this, arguments);
  1990.           }
  1991.           if (c95dm === r95dm) return;
  1992.         } else {
  1993.           const stack = new Error().stack;
  1994.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1995.             return this.__notifyPath5036__.apply(this, arguments);
  1996.           }
  1997.         }
  1998.  
  1999.         if (uvid > 1e8) uvid = uvid % 100;
  2000.         let tid = ++uvid;
  2001.  
  2002.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  2003.         mutexParticipants.lockWith(lockResolve => {
  2004.  
  2005.           const participants00 = cnt.participantsManager.participants;
  2006.  
  2007.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  2008.             lockResolve();
  2009.             return;
  2010.           }
  2011.  
  2012.           let doUpdate = false;
  2013.  
  2014.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  2015.  
  2016.             if (!participants00.r94dm) {
  2017.               participants00.r94dm = 1;
  2018.               if (++r95dm > 1e9) r95dm = 9;
  2019.               participants00.push = function () {
  2020.                 if (++r95dm > 1e9) r95dm = 9;
  2021.                 return Array.prototype.push.apply(this, arguments);
  2022.               }
  2023.               participants00.pop = function () {
  2024.                 if (++r95dm > 1e9) r95dm = 9;
  2025.                 return Array.prototype.pop.apply(this, arguments);
  2026.               }
  2027.               participants00.shift = function () {
  2028.                 if (++r95dm > 1e9) r95dm = 9;
  2029.                 return Array.prototype.shift.apply(this, arguments);
  2030.               }
  2031.               participants00.unshift = function () {
  2032.                 if (++r95dm > 1e9) r95dm = 9;
  2033.                 return Array.prototype.unshift.apply(this, arguments);
  2034.               }
  2035.               participants00.splice = function () {
  2036.                 if (++r95dm > 1e9) r95dm = 9;
  2037.                 return Array.prototype.splice.apply(this, arguments);
  2038.               }
  2039.               participants00.sort = function () {
  2040.                 if (++r95dm > 1e9) r95dm = 9;
  2041.                 return Array.prototype.sort.apply(this, arguments);
  2042.               }
  2043.               participants00.reverse = function () {
  2044.                 if (++r95dm > 1e9) r95dm = 9;
  2045.                 return Array.prototype.reverse.apply(this, arguments);
  2046.               }
  2047.             }
  2048.  
  2049.             if (c95dm !== r95dm) {
  2050.               c95dm = r95dm;
  2051.               doUpdate = true;
  2052.             }
  2053.  
  2054.           } else {
  2055.             doUpdate = true;
  2056.           }
  2057.  
  2058.           if (!doUpdate) {
  2059.             lockResolve();
  2060.             return;
  2061.           }
  2062.  
  2063.           const participants = participants00.slice(0);
  2064.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  2065.           beforeParticipantsMap.set(cnt, participants);
  2066.  
  2067.           const resPromise = (async () => {
  2068.  
  2069.             if (beforeParticipants.length === 0) {
  2070.               // not error
  2071.               return 0;
  2072.             }
  2073.  
  2074.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  2075.  
  2076.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  2077.             if (beforeParticipants.length !== countOfElements) {
  2078.               // there is somewrong for the cache. - sometimes happen
  2079.               return 0;
  2080.             }
  2081.  
  2082.             const idsBefore = convertToIds(beforeParticipants);
  2083.             const idsAfter = convertToIds(participants);
  2084.  
  2085.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  2086.  
  2087.             let res = 1; // default 1 for no update
  2088.  
  2089.             if (indexSplices.length >= 1) {
  2090.  
  2091.  
  2092.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  2093.               // let p1 = indexSplices[0].removed;
  2094.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  2095.  
  2096.               /* folllow
  2097.                   a.notifyPath(c + ".splices", d);
  2098.                   a.notifyPath(c + ".length", b.length);
  2099.               */
  2100.               // stampDomArraySplices_
  2101.  
  2102.  
  2103.               await new Promise(resolve => {
  2104.                 cnt.resolveForDOMRendering781 = resolve;
  2105.  
  2106.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  2107.                   indexSplices
  2108.                 });
  2109.                 indexSplices = null;
  2110.                 releaser();
  2111.                 releaser = null;
  2112.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  2113.                   participants.length
  2114.                 );
  2115.  
  2116.               });
  2117.  
  2118.               await Promise.resolve(0); // play safe for the change of 'length'
  2119.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  2120.  
  2121.               let wrongSize = participants.length !== countOfElements
  2122.               if (wrongSize) {
  2123.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  2124.                 return 0;
  2125.               }
  2126.  
  2127.               res = 2 | 4;
  2128.  
  2129.             } else {
  2130.  
  2131.               indexSplices = null;
  2132.               releaser();
  2133.               releaser = null;
  2134.  
  2135.               if (participants.length !== countOfElements) {
  2136.                 // other unhandled cases
  2137.                 return 0;
  2138.               }
  2139.  
  2140.             }
  2141.  
  2142.             // participants.length === countOfElements before contentUpdates
  2143.             if (contentUpdates.length >= 1) {
  2144.               for (const contentUpdate of contentUpdates) {
  2145.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  2146.                 if (isChanged) {
  2147.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  2148.                   res |= 4 | 8;
  2149.                 }
  2150.               }
  2151.             }
  2152.             contentUpdates = null;
  2153.  
  2154.             return res;
  2155.  
  2156.  
  2157.           })();
  2158.  
  2159.  
  2160.           resPromise.then(resValue => {
  2161.  
  2162.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  2163.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  2164.             if (resValue === 0) {
  2165.               new Promise(resolve => {
  2166.                 cnt.resolveForDOMRendering781 = resolve;
  2167.                 isLogRequired && console.log("Full Refresh begins");
  2168.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  2169.               }).then(() => {
  2170.                 isLogRequired && console.log("Full Refresh ends");
  2171.                 console.groupEnd();
  2172.               }).then(lockResolve);
  2173.               return;
  2174.             }
  2175.  
  2176.             const delayLockResolve = (resValue & 4) === 4;
  2177.  
  2178.             if (delayLockResolve) {
  2179.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  2180.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  2181.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  2182.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  2183.               isLogRequired && console.groupEnd();
  2184.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  2185.               // mutex lock with requestAnimationFrame can also disable participants update in background
  2186.               requestAnimationFrame(lockResolve);
  2187.             } else {
  2188.               lockResolve();
  2189.             }
  2190.  
  2191.           });
  2192.  
  2193.         });
  2194.  
  2195.       }
  2196.  
  2197.       return { notifyPath7081 };
  2198.  
  2199.     })();
  2200.  
  2201.     const whenDefinedMultiple = async (tags) => {
  2202.  
  2203.       const sTags = [...new Set(tags)];
  2204.       const len = sTags.length;
  2205.  
  2206.       const pTags = new Array(len);
  2207.       for (let i = 0; i < len; i++) {
  2208.         pTags[i] = customElements.whenDefined(sTags[i]);
  2209.       }
  2210.  
  2211.       await Promise.all(pTags);
  2212.       pTags.length = 0;
  2213.  
  2214.       return sTags;
  2215.  
  2216.     }
  2217.  
  2218.     const onRegistryReadyForDataManipulation = () => {
  2219.  
  2220.       function dummy5035(a, b, c) { }
  2221.       function dummy411(a, b, c) { }
  2222.  
  2223.  
  2224.  
  2225.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  2226.  
  2227.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  2228.  
  2229.         const tag = "yt-live-chat-participant-list-renderer";
  2230.         const cProto = getProto(document.createElement(tag));
  2231.         if (!cProto || typeof cProto.attached !== 'function') {
  2232.           // for _registered, proto.attached shall exist when the element is defined.
  2233.           // for controller extraction, attached shall exist when instance creates.
  2234.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2235.           return;
  2236.         }
  2237.  
  2238.  
  2239.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  2240.  
  2241.         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'];
  2242.         const fgs = {};
  2243.         for (const key of fgsArr) fgs[key] = undefined;
  2244.  
  2245.         try {
  2246.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  2247.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  2248.         } catch (e) { }
  2249.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2250.  
  2251.         const canDoReplacement = (() => {
  2252.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2253.             console.warn('YouTube Live Chat Tamer is running.');
  2254.             return;
  2255.           }
  2256.  
  2257.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2258.             console.warn('YouTube Live Chat Tamer is running.');
  2259.             return;
  2260.           }
  2261.  
  2262.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2263.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2264.  
  2265.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2266.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2267.             return;
  2268.           }
  2269.  
  2270.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2271.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2272.             return;
  2273.           }
  2274.  
  2275.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2276.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2277.             return;
  2278.           }
  2279.           return true;
  2280.         })();
  2281.  
  2282.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2283.  
  2284.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2285.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2286.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2287.           const s = fiRSCB.split('.');
  2288.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2289.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2290.           } else {
  2291.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - NG`);
  2292.           }
  2293.         } else {
  2294.           console.log("flushRenderStamperComponentBindings_ - not found");
  2295.         }
  2296.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2297.  
  2298.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2299.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2300.           cProto.flushRenderStamperComponentBindings_ = function () {
  2301.             // console.log('flushRenderStamperComponentBindings_')
  2302.             this.flushRenderStamperComponentBindings66_();
  2303.             if (this.resolveForDOMRendering781) {
  2304.               this.resolveForDOMRendering781();
  2305.               this.resolveForDOMRendering781 = null;
  2306.             }
  2307.           };
  2308.         }
  2309.  
  2310.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2311.           const container = ((this || 0).$ || 0).participants;
  2312.           if (!container) return 0;
  2313.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2314.         }
  2315.  
  2316.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2317.  
  2318.         cProto.__attached412__ = cProto.attached;
  2319.         const fpPList = function (hostElement) {
  2320.           const cnt = insp(hostElement);
  2321.           if (beforeParticipantsMap.has(cnt)) return;
  2322.           hostElement.classList.add('n9fJ3');
  2323.  
  2324.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2325.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2326.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2327.             return;
  2328.           }
  2329.  
  2330.           groupCollapsed("Participant List attached", "");
  2331.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2332.           //   console.log(123, 'appendChild');
  2333.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2334.           // }
  2335.  
  2336.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2337.           //   console.log(123, 'insertBefore');
  2338.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2339.           // }
  2340.  
  2341.           cnt.__notifyPath5036__ = cnt.notifyPath
  2342.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2343.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2344.           console.log(`initial number of participants: ${participants.length}`);
  2345.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2346.           beforeParticipantsMap.set(cnt, newParticipants);
  2347.           cnt.notifyPath = notifyPath7081;
  2348.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2349.           console.groupEnd();
  2350.         }
  2351.         cProto.attached = function () {
  2352.           fpPList(this.hostElement || this);
  2353.           this.__attached412__.apply(this, arguments);
  2354.         };
  2355.  
  2356.  
  2357.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2358.  
  2359.           /** @type {boolean | (()=>boolean)} */
  2360.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2361.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2362.  
  2363.             let lastMessageDate = 0;
  2364.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2365.  
  2366.             cProto.stampDomArray_ = function (...args) {
  2367.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2368.                 if (typeof toUseMaintainStableList === 'function') {
  2369.                   toUseMaintainStableList = toUseMaintainStableList();
  2370.                 }
  2371.                 args[5] = toUseMaintainStableList;
  2372.                 let currentDate = Date.now();
  2373.                 if (currentDate - lastMessageDate > 440) {
  2374.                   lastMessageDate = currentDate;
  2375.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2376.                 }
  2377.               }
  2378.               return this.stampDomArray66_.apply(this, args);
  2379.             }
  2380.  
  2381.             cProto.stampDomArray_.nIegT = 1;
  2382.  
  2383.           }
  2384.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2385.         } else {
  2386.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2387.         }
  2388.  
  2389.         console.groupEnd();
  2390.  
  2391.         if (onPageElements.length >= 1) {
  2392.           for (const s of onPageElements) {
  2393.             if (insp(s).isAttached === true) {
  2394.               fpPList(s);
  2395.             }
  2396.           }
  2397.         }
  2398.  
  2399.       }).catch(console.warn);
  2400.  
  2401.     };
  2402.  
  2403.     if (DO_PARTICIPANT_LIST_HACKS) {
  2404.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2405.     }
  2406.  
  2407.  
  2408.  
  2409.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2410.  
  2411.  
  2412.  
  2413.  
  2414.     const bnForDelayChatOccurrence = () => {
  2415.  
  2416.       document.addEventListener('animationstart', (evt) => {
  2417.  
  2418.         if (evt.animationName === 'dontRenderAnimation') {
  2419.           evt.target.classList.remove('dont-render');
  2420.           if (scrollChatFn) scrollChatFn();
  2421.         }
  2422.  
  2423.       }, true);
  2424.  
  2425.       const f = (elm) => {
  2426.         if (elm && elm.nodeType === 1) {
  2427.           if (!skipDontRender && allowDontRender === true) {
  2428.             // innerTextFixFn();
  2429.             elm.classList.add('dont-render');
  2430.           }
  2431.         }
  2432.       }
  2433.  
  2434.       Node.prototype.__appendChild931__ = function (a) {
  2435.         a = dr(a);
  2436.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2437.           if (a && a.nodeType === 1) f(a);
  2438.           else if (a instanceof DocumentFragment) {
  2439.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2440.               f(n);
  2441.             }
  2442.           }
  2443.         }
  2444.       }
  2445.  
  2446.       Node.prototype.__appendChild932__ = function () {
  2447.         this.__appendChild931__.apply(this, arguments);
  2448.         return Node.prototype.appendChild.apply(this, arguments);
  2449.       }
  2450.  
  2451.  
  2452.     };
  2453.  
  2454.     const watchUserCSS = () => {
  2455.  
  2456.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2457.  
  2458.       const getElemFromWR = (nr) => {
  2459.         const n = kRef(nr);
  2460.         if (n && n.isConnected) return n;
  2461.         return null;
  2462.       }
  2463.  
  2464.       const clearContentVisibilitySizing = () => {
  2465.         Promise.resolve().then(() => {
  2466.  
  2467.           const e = document.querySelector('#show-more[disabled]');
  2468.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2469.  
  2470.           let lastVisibleItemWR = null;
  2471.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2472.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2473.             elm.setAttribute('wSr93', '');
  2474.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2475.           }
  2476.           requestAnimationFrame(() => {
  2477.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2478.             if (btnShowMore) btnShowMore.click();
  2479.             else {
  2480.               // would not work if switch it frequently
  2481.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2482.               if (lastVisibleItem) {
  2483.  
  2484.                 Promise.resolve()
  2485.                   .then(() => lastVisibleItem.scrollIntoView())
  2486.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2487.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2488.                   .catch(e => { }) // break the chain when method not callable
  2489.  
  2490.               }
  2491.             }
  2492.           });
  2493.  
  2494.         });
  2495.  
  2496.       }
  2497.  
  2498.       const mutObserver = new MutationObserver((mutations) => {
  2499.         for (const mutation of mutations) {
  2500.           if ((mutation.addedNodes || 0).length >= 1) {
  2501.             for (const addedNode of mutation.addedNodes) {
  2502.               if (addedNode.nodeName === 'STYLE') {
  2503.                 clearContentVisibilitySizing();
  2504.                 return;
  2505.               }
  2506.             }
  2507.           }
  2508.           if ((mutation.removedNodes || 0).length >= 1) {
  2509.             for (const removedNode of mutation.removedNodes) {
  2510.               if (removedNode.nodeName === 'STYLE') {
  2511.                 clearContentVisibilitySizing();
  2512.                 return;
  2513.               }
  2514.             }
  2515.           }
  2516.         }
  2517.       });
  2518.  
  2519.       mutObserver.observe(document.documentElement, {
  2520.         childList: true,
  2521.         subtree: false
  2522.       });
  2523.       mutObserver.observe(document.head, {
  2524.         childList: true,
  2525.         subtree: false
  2526.       });
  2527.       mutObserver.observe(document.body, {
  2528.         childList: true,
  2529.         subtree: false
  2530.       });
  2531.  
  2532.     }
  2533.  
  2534.  
  2535.     class WillChangeController {
  2536.       constructor(itemScroller, willChangeValue) {
  2537.         this.element = itemScroller;
  2538.         this.counter = 0;
  2539.         this.active = false;
  2540.         this.willChangeValue = willChangeValue;
  2541.       }
  2542.  
  2543.       beforeOper() {
  2544.         if (!this.active) {
  2545.           this.active = true;
  2546.           this.element.style.willChange = this.willChangeValue;
  2547.         }
  2548.         this.counter++;
  2549.       }
  2550.  
  2551.       afterOper() {
  2552.         const c = this.counter;
  2553.         requestAnimationFrame(() => {
  2554.           if (c === this.counter) {
  2555.             this.active = false;
  2556.             this.element.style.willChange = '';
  2557.           }
  2558.         });
  2559.       }
  2560.  
  2561.       release() {
  2562.         const element = this.element;
  2563.         this.element = null;
  2564.         this.counter = 1e16;
  2565.         this.active = false;
  2566.         try {
  2567.           element.style.willChange = '';
  2568.         } catch (e) { }
  2569.       }
  2570.  
  2571.     }
  2572.  
  2573.  
  2574.     const skzData = (skz) => skz.data = {
  2575.       "message": {
  2576.         "runs": [
  2577.           {
  2578.             "text": "em2o"
  2579.           },
  2580.           {
  2581.             "emoji": {
  2582.               "emojiId": "cm35z",
  2583.               "shortcuts": [
  2584.                 ":_s:",
  2585.                 ":s:"
  2586.               ],
  2587.               "searchTerms": [
  2588.                 "_s",
  2589.                 "s"
  2590.               ],
  2591.               "image": {
  2592.                 "thumbnails": [
  2593.                   {
  2594.                     "url": dummyImgURL,
  2595.                     "width": 48,
  2596.                     "height": 48
  2597.                   }
  2598.                 ],
  2599.                 "accessibility": {
  2600.                   "accessibilityData": {
  2601.                     "label": "s"
  2602.                   }
  2603.                 }
  2604.               },
  2605.               "isCustomEmoji": true
  2606.             }
  2607.           },
  2608.           {
  2609.             "text": "ji"
  2610.           }
  2611.         ]
  2612.       },
  2613.       "authorName": {
  2614.         "simpleText": "N"
  2615.       },
  2616.       "authorPhoto": {
  2617.         "thumbnails": [
  2618.           {
  2619.             "url": dummyImgURL,
  2620.             "width": 64,
  2621.             "height": 64
  2622.           }
  2623.         ]
  2624.       },
  2625.       "contextMenuEndpoint": {
  2626.         "commandMetadata": {
  2627.           "webCommandMetadata": {
  2628.             "ignoreNavigation": true
  2629.           }
  2630.         },
  2631.         "liveChatItemContextMenuEndpoint": {
  2632.           "params": "123=="
  2633.         }
  2634.       },
  2635.       "id": "sk35z",
  2636.       "timestampUsec": "1232302352350000",
  2637.       "authorBadges": [
  2638.         {
  2639.           "liveChatAuthorBadgeRenderer": {
  2640.             "customThumbnail": {
  2641.               "thumbnails": [
  2642.                 {
  2643.                   "url": dummyImgURL,
  2644.                   "width": 16,
  2645.                   "height": 16
  2646.                 },
  2647.                 {
  2648.                   "url": dummyImgURL,
  2649.                   "width": 32,
  2650.                   "height": 32
  2651.                 }
  2652.               ]
  2653.             },
  2654.             "tooltip": "T",
  2655.             "accessibility": {
  2656.               "accessibilityData": {
  2657.                 "label": "E"
  2658.               }
  2659.             }
  2660.           }
  2661.         }
  2662.       ],
  2663.       "authorExternalChannelId": "A",
  2664.       "contextMenuAccessibility": {
  2665.         "accessibilityData": {
  2666.           "label": "E"
  2667.         }
  2668.       },
  2669.       "timestampText": {
  2670.         "simpleText": "0:43"
  2671.       }
  2672.     };
  2673.  
  2674.  
  2675.  
  2676.     const { lcRendererElm, visObserver } = (() => {
  2677.  
  2678.  
  2679.  
  2680.       let lcRendererWR = null;
  2681.  
  2682.       const lcRendererElm = () => {
  2683.         let lcRenderer = kRef(lcRendererWR);
  2684.         if (!lcRenderer || !lcRenderer.isConnected) {
  2685.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2686.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2687.         }
  2688.         return lcRenderer;
  2689.       };
  2690.  
  2691.  
  2692.       let hasFirstShowMore = false;
  2693.  
  2694.       const visObserverFn = (entry) => {
  2695.  
  2696.         const target = entry.target;
  2697.         if (!target) return;
  2698.         // if(target.classList.contains('dont-render')) return;
  2699.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2700.         // const h = entry.boundingClientRect.height;
  2701.         /*
  2702.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2703.             // e.g. under fullscreen. the element created but not rendered.
  2704.             target.setAttribute('wSr93', '');
  2705.             return;
  2706.         }
  2707.         */
  2708.         if (isVisible) {
  2709.           // target.style.setProperty('--wsr94', h + 'px');
  2710.           target.setAttribute('wSr93', 'visible');
  2711.           if (nNextElem(target) === null) {
  2712.  
  2713.             // firstVisibleItemDetected = true;
  2714.             /*
  2715.               if (dateNow() - lastScroll < 80) {
  2716.                   lastLShow = 0;
  2717.                   lastScroll = 0;
  2718.                   Promise.resolve().then(clickShowMore);
  2719.               } else {
  2720.                   lastLShow = dateNow();
  2721.               }
  2722.               */
  2723.             // lastLShow = dateNow();
  2724.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2725.             // implement inside visObserver to ensure there is sufficient delay
  2726.             hasFirstShowMore = true;
  2727.             requestAnimationFrame(() => {
  2728.               // foreground page
  2729.               // page visibly ready -> load the latest comments at initial loading
  2730.               const lcRenderer = lcRendererElm();
  2731.               if (lcRenderer) {
  2732.                 insp(lcRenderer).scrollToBottom_();
  2733.               }
  2734.             });
  2735.           }
  2736.         }
  2737.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2738.  
  2739.           // target.style.setProperty('--wsr94', h + 'px');
  2740.           target.setAttribute('wSr93', 'hidden');
  2741.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2742.  
  2743.       }
  2744.  
  2745.  
  2746.  
  2747.       const visObserver = new IntersectionObserver((entries) => {
  2748.  
  2749.         for (const entry of entries) {
  2750.  
  2751.           Promise.resolve(entry).then(visObserverFn);
  2752.  
  2753.         }
  2754.  
  2755.       }, {
  2756.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2757.         rootMargin: "0px",
  2758.         threshold: [0.05, 0.95],
  2759.       });
  2760.  
  2761.  
  2762.       return { lcRendererElm, visObserver }
  2763.  
  2764.  
  2765.     })();
  2766.  
  2767.     const { setupMutObserver } = (() => {
  2768.  
  2769.       async function asyncTickerBackgroundOverridedChecker() {
  2770.  
  2771.         try {
  2772.           await promiseForCustomYtElementsReady.then();
  2773.           await customElements.whenDefined('yt-live-chat-text-message-renderer');
  2774.           await new Promise(r => setTimeout(r, 800));
  2775.  
  2776.           if (!hasTimerModified) return;
  2777.           const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  2778.           if (!tickerRenderer) return;
  2779.  
  2780.           const tickerRendererDollar = indr(tickerRenderer);
  2781.           const items = (tickerRendererDollar || 0).items || 0;
  2782.           if (!items) return;
  2783.           const template = document.createElement('template');
  2784.           template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  2785.             modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  2786.             dimmed="" [dummy777]>
  2787.             <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  2788.               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));">
  2789.               <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  2790.                 <yt-img-shadow777 id="author-photo" height="24" width="24"
  2791.                   class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  2792.                   style="background-color: transparent;" loaded=""><img id="img"
  2793.                     draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  2794.                     src="${dummyImgURL}"></yt-img-shadow777>
  2795.  
  2796.                 <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  2797.               </div>
  2798.             </div>
  2799.           </yt-live-chat-ticker-dummy777-item-renderer>`;
  2800.           const dummy777 = template.content.firstElementChild;
  2801.           await Promise.resolve().then();
  2802.           let res = 0;
  2803.           if (items instanceof HTMLElement && items.isConnected === true) {
  2804.             try {
  2805.               items.appendChild(dummy777);
  2806.               let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  2807.               if (container.isConnected === true) {
  2808.                 const evaluated = `${getComputedStyle(container).background}`;
  2809.                 container = null;
  2810.                 res = evaluated.indexOf('0.') < 4 ? 1 : 2;
  2811.               }
  2812.             } catch (e) { console.warn(e) }
  2813.             HTMLElement.prototype.remove.call(dummy777);
  2814.           }
  2815.           await Promise.resolve().then();
  2816.           dummy777.textContent = '';
  2817.           if (res === 1) {
  2818.             // not fulfilling
  2819.             // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  2820.             console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2821.               "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2822.               "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2823.             );
  2824.             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');
  2825.             console.groupEnd();
  2826.             console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  2827.           } else if (res === 2) {
  2828.             console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2829.           }
  2830.         } catch (e) {
  2831.           console.warn(e);
  2832.         }
  2833.       }
  2834.  
  2835.       async function asyncDelayChatOccurrence(m2) {
  2836.         try {
  2837.           await promiseForCustomYtElementsReady.then();
  2838.           await customElements.whenDefined('yt-live-chat-text-message-renderer');
  2839.           await new Promise(r => setTimeout(r, 1));
  2840.           const dummy888 = document.createElement('yt-live-chat-text-message-renderer');
  2841.           // const template = document.createElement('template');
  2842.           // template.innerHTML = "<yt-live-chat-text-message-renderer></yt-live-chat-text-message-renderer>"
  2843.           // const dummy888 = template.content.firstElementChild;
  2844.           const skzCnt = insp(dummy888);
  2845.           if (!(skzCnt && 'data' in skzCnt && 'attached' in skzCnt)) {
  2846.             return;
  2847.           }
  2848.           if (!skzCnt.hostElement) skzCnt.hostElement = dummy888;
  2849.           /** @type {HTMLTemplateElement} */
  2850.           const skzElem = dummy888;
  2851.           let cz1 = null;
  2852.           const deferredZy1 = new Promise(resolve => {
  2853.             skzCnt.attached = function () {
  2854.               cz1 = HTMLElement.prototype.querySelector.call(skzElem, '#message img') !== null;
  2855.               resolve(skzElem.textContent);
  2856.             }
  2857.             skzCnt.detached = function () {
  2858.             }
  2859.           });
  2860.           skzElem.id = 'sk35z';
  2861.           skzData(skzCnt);
  2862.           sk35zResolveFn = null;
  2863.           const deferredMutation = new Promise(resolve => {
  2864.             sk35zResolveFn = resolve;
  2865.             HTMLElement.prototype.appendChild.call(m2, skzElem);
  2866.           });
  2867.           const [zy1, _] = await Promise.all([deferredZy1, deferredMutation]);
  2868.           skzCnt.attached = function () { };
  2869.           function fn() {
  2870.             const zy2 = skzElem.textContent;
  2871.             const cz2 = HTMLElement.prototype.querySelector.call(skzElem, '#message img') !== null;
  2872.             if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2873.               allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2874.             }
  2875.             if (allowDontRender === true) return true;
  2876.             if (allowDontRender === false) {
  2877.               console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2878.                 "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2879.                 "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2880.               );
  2881.               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');
  2882.               console.groupEnd();
  2883.             }
  2884.           }
  2885.           await new Promise(r => setTimeout(r, 1));
  2886.           if (!fn()) return;
  2887.           await new Promise(r => requestAnimationFrame(r));
  2888.           if (!fn()) return;
  2889.           skzElem.remove();
  2890.           await Promise.resolve().then();
  2891.           skzElem.textContent = '';
  2892.           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2893.         } catch (e) {
  2894.           console.warn(e);
  2895.         }
  2896.       }
  2897.  
  2898.       const mutFn = (items) => {
  2899.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2900.           if (node.hasAttribute('wSr93')) break;
  2901.           node.setAttribute('wSr93', '');
  2902.           visObserver.observe(node);
  2903.         }
  2904.       }
  2905.  
  2906.       const mutObserver = new MutationObserver((mutations) => {
  2907.         const items = (mutations[0] || 0).target;
  2908.         if (!items) return;
  2909.         if (sk35zResolveFn) {
  2910.           sk35zResolveFn();
  2911.           sk35zResolveFn = null;
  2912.         }
  2913.         mutFn(items);
  2914.       });
  2915.  
  2916.       const setupMutObserver = (m2) => {
  2917.         scrollChatFn = null;
  2918.         mutObserver.disconnect();
  2919.         mutObserver.takeRecords();
  2920.         if (m2) {
  2921.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2922.           if (typeof m2.__appendChild932__ === 'function') {
  2923.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2924.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2925.           }
  2926.           mutObserver.observe(m2, {
  2927.             childList: true,
  2928.             subtree: false
  2929.           });
  2930.           mutFn(m2);
  2931.  
  2932.           const isFirstList = firstList;
  2933.           firstList = false;
  2934.  
  2935.           if (ENABLE_OVERFLOW_ANCHOR) {
  2936.  
  2937.             let items = m2;
  2938.             let addedAnchor = false;
  2939.             if (items) {
  2940.               if (items.nextElementSibling === null) {
  2941.                 items.classList.add('no-anchor');
  2942.                 addedAnchor = true;
  2943.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2944.               }
  2945.             }
  2946.  
  2947.  
  2948.  
  2949.             if (addedAnchor) {
  2950.               nodeParent(m2).classList.add('no-anchor'); // required
  2951.             }
  2952.  
  2953.           }
  2954.  
  2955.           // let div = document.createElement('div');
  2956.           // div.id = 'qwcc';
  2957.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2958.           // bufferRegion =div;
  2959.  
  2960.           // buffObserver.takeRecords();
  2961.           // buffObserver.disconnect();
  2962.           // buffObserver.observe(div,  {
  2963.           //     childList: true,
  2964.           //     subtree: false
  2965.           // })
  2966.  
  2967.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2968.             asyncDelayChatOccurrence(m2);
  2969.           }
  2970.  
  2971.  
  2972.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2973.  
  2974.             (() => {
  2975.  
  2976.               const tag = 'yt-iframed-player-events-relay'
  2977.               const dummy = document.createElement(tag);
  2978.  
  2979.               const cProto = getProto(dummy);
  2980.               if (!cProto || !cProto.handlePostMessage_) {
  2981.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2982.                 return;
  2983.               }
  2984.  
  2985.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2986.  
  2987.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2988.  
  2989.                 cProto.handlePostMessage67_ = function (a) {
  2990.  
  2991.                   const da = a.data;
  2992.  
  2993.  
  2994.  
  2995.                   playEventsStack = playEventsStack.then(() => {
  2996.  
  2997.  
  2998.  
  2999.                     if ('yt-player-state-change' in da) {
  3000.  
  3001.                       const qc = da['yt-player-state-change'];
  3002.  
  3003.  
  3004.                       let isQcChanged = false;
  3005.  
  3006.                       if (qc === 2) { isQcChanged = qc !== _playerState; _playerState = 2; relayCount = 0; } // paused
  3007.                       else if (qc === 3) { isQcChanged = qc !== _playerState; _playerState = 3; } // playing
  3008.                       else if (qc === 1) { isQcChanged = qc !== _playerState; _playerState = 1; } // playing
  3009.  
  3010.  
  3011.                       if ((isQcChanged) && playerState !== _playerState) {
  3012.                         playerEventsByIframeRelay = true;
  3013.                         onPlayStateChangePromise = new Promise((resolve) => {
  3014.                           let k = _playerState;
  3015.                           foregroundPromiseFn().then(() => {
  3016.                             if (k === _playerState && playerState !== _playerState) playerState = _playerState;
  3017.                             onPlayStateChangePromise = null;
  3018.                             resolve();
  3019.                           })
  3020.                         }).catch(console.warn);
  3021.  
  3022.                       }
  3023.  
  3024.                     } else if ('yt-player-video-progress' in da) {
  3025.                       const vp = da['yt-player-video-progress'];
  3026.  
  3027.  
  3028.                       relayCount++;
  3029.                       lastPlayerProgress = vp > 0 ? vp : 0;
  3030.  
  3031.  
  3032.                       if (relayPromise && vp > 0 && relayCount >= 2) {
  3033.                         if (onPlayStateChangePromise) {
  3034.                           onPlayStateChangePromise.then(() => {
  3035.                             relayPromise && relayPromise.resolve();
  3036.                             relayPromise = null;
  3037.                           })
  3038.                         } else {
  3039.                           relayPromise.resolve();
  3040.                           relayPromise = null;
  3041.                         }
  3042.                       }
  3043.  
  3044.  
  3045.  
  3046.                     }
  3047.  
  3048.  
  3049.  
  3050.  
  3051.  
  3052.  
  3053.                     return this.handlePostMessage66_(a);
  3054.  
  3055.  
  3056.  
  3057.                   }).catch(console.warn);
  3058.  
  3059.                 }
  3060.  
  3061.  
  3062.                 cProto.handlePostMessage_ = function (a) {
  3063.  
  3064.  
  3065.                   const da = (a || 0).data || 0;
  3066.  
  3067.                   if (typeof da !== 'object') return;
  3068.  
  3069.                   if (waitForInitialDataCompletion === 1) return;
  3070.  
  3071.                   if (!isPlayProgressTriggered) {
  3072.                     isPlayProgressTriggered = true;
  3073.  
  3074.                     if ('yt-player-video-progress' in da) {
  3075.                       waitForInitialDataCompletion = 1;
  3076.  
  3077.                       const wrapWith = (data) => {
  3078.                         const { origin } = a;
  3079.                         return {
  3080.                           origin,
  3081.                           data
  3082.                         };
  3083.                       }
  3084.  
  3085.                       this.handlePostMessage67_(wrapWith({
  3086.                         "yt-iframed-parent-ready": true
  3087.                       }));
  3088.  
  3089.  
  3090.  
  3091.                       playEventsStack = playEventsStack.then(() => {
  3092.  
  3093.  
  3094.  
  3095.                         const lcr = document.querySelector('yt-live-chat-renderer');
  3096.                         const psc = document.querySelector("yt-player-seek-continuation");
  3097.                         if (lcr && psc && lcr.replayBuffer_) {
  3098.  
  3099.  
  3100.                           const rbProgress = lcr.replayBuffer_.lastVideoOffsetTimeMsec;
  3101.                           const daProgress = da['yt-player-video-progress'] * 1000
  3102.                           // document.querySelector('yt-live-chat-renderer').playerProgressChanged_(1e-5);
  3103.  
  3104.  
  3105.                           const front_ = (lcr.replayBuffer_.replayQueue || 0).front_;
  3106.                           const back_ = (lcr.replayBuffer_.replayQueue || 0).back_;
  3107.  
  3108.  
  3109.                           // console.log(deepCopy( front_))
  3110.                           // console.log(deepCopy( back_))
  3111.                           // console.log(rbProgress, daProgress, )
  3112.                           if (front_ && back_ && rbProgress > daProgress && back_.length > 2 && back_.some(e => e && +e.videoOffsetTimeMsec > daProgress) && back_.some(e => e && +e.videoOffsetTimeMsec < daProgress)) {
  3113.                             // no action
  3114.                             // console.log('ss1')
  3115.                           } else if (rbProgress < daProgress + 3400 && rbProgress > daProgress - 1200) {
  3116.                             //  daProgress - 1200 < rbProgress < daProgress + 3400
  3117.                             // console.log('ss2')
  3118.                           } else {
  3119.  
  3120.                             // console.log('ss3')
  3121.                             // lcr.replayBuffer_.replayQueue.back_.length= 0;
  3122.                             // lcr.replayBuffer_.replayQueue.front_.length= 0;
  3123.  
  3124.                             // lcr
  3125.                             lcr.previousProgressSec = 1E-5;
  3126.                             // lcr._setIsSeeking(!0),
  3127.                             lcr.replayBuffer_.clear()
  3128.                             psc.fireSeekContinuation_(da['yt-player-video-progress']);
  3129.                           }
  3130.  
  3131.                         }
  3132.  
  3133.  
  3134.                         waitForInitialDataCompletion = 2;
  3135.  
  3136.                         this.handlePostMessage_(a);
  3137.  
  3138.  
  3139.                       }).catch(console.warn);
  3140.  
  3141.  
  3142.  
  3143.                       return;
  3144.  
  3145.                     }
  3146.  
  3147.                   }
  3148.  
  3149.  
  3150.  
  3151.                   this.handlePostMessage67_(a);
  3152.  
  3153.  
  3154.  
  3155.                 }
  3156.  
  3157.               }
  3158.  
  3159.  
  3160.             })();
  3161.  
  3162.           }
  3163.  
  3164.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  3165.             asyncTickerBackgroundOverridedChecker();
  3166.           }
  3167.  
  3168.         }
  3169.       }
  3170.  
  3171.       return { setupMutObserver };
  3172.  
  3173.  
  3174.  
  3175.     })();
  3176.  
  3177.     const setupEvents = () => {
  3178.  
  3179.  
  3180.       let scrollCount = 0;
  3181.  
  3182.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  3183.  
  3184.  
  3185.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  3186.  
  3187.         const lcRenderer = lcRendererElm();
  3188.         if (lcRenderer) {
  3189.           const cnt = insp(lcRenderer);
  3190.           if (!cnt.hasUserJustInteracted11_) return;
  3191.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  3192.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  3193.           }
  3194.         }
  3195.  
  3196.       }
  3197.  
  3198.       document.addEventListener('scroll', (evt) => {
  3199.         if (!evt || !evt.isTrusted) return;
  3200.         // lastScroll = dateNow();
  3201.         if (++scrollCount > 1e9) scrollCount = 9;
  3202.       }, passiveCapture); // support contain => support passive
  3203.  
  3204.       let lastScrollCount = -1;
  3205.       document.addEventListener('wheel', (evt) => {
  3206.         if (!evt || !evt.isTrusted) return;
  3207.         if (lastScrollCount === scrollCount) return;
  3208.         lastScrollCount = scrollCount;
  3209.         lastWheel = dateNow();
  3210.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3211.       }, passiveCapture); // support contain => support passive
  3212.  
  3213.       document.addEventListener('mousedown', (evt) => {
  3214.         if (!evt || !evt.isTrusted) return;
  3215.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3216.         lastMouseDown = dateNow();
  3217.         currentMouseDown = true;
  3218.         lastUserInteraction = lastMouseDown;
  3219.       }, passiveCapture);
  3220.  
  3221.       document.addEventListener('pointerdown', (evt) => {
  3222.         if (!evt || !evt.isTrusted) return;
  3223.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3224.         lastMouseDown = dateNow();
  3225.         currentMouseDown = true;
  3226.         lastUserInteraction = lastMouseDown;
  3227.       }, passiveCapture);
  3228.  
  3229.       document.addEventListener('click', (evt) => {
  3230.         if (!evt || !evt.isTrusted) return;
  3231.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3232.         lastMouseDown = lastMouseUp = dateNow();
  3233.         currentMouseDown = false;
  3234.         lastUserInteraction = lastMouseDown;
  3235.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3236.       }, passiveCapture);
  3237.  
  3238.       document.addEventListener('tap', (evt) => {
  3239.         if (!evt || !evt.isTrusted) return;
  3240.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  3241.         lastMouseDown = lastMouseUp = dateNow();
  3242.         currentMouseDown = false;
  3243.         lastUserInteraction = lastMouseDown;
  3244.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3245.       }, passiveCapture);
  3246.  
  3247.  
  3248.       document.addEventListener('mouseup', (evt) => {
  3249.         if (!evt || !evt.isTrusted) return;
  3250.         if (currentMouseDown) {
  3251.           lastMouseUp = dateNow();
  3252.           currentMouseDown = false;
  3253.           lastUserInteraction = lastMouseUp;
  3254.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3255.         }
  3256.       }, passiveCapture);
  3257.  
  3258.  
  3259.       document.addEventListener('pointerup', (evt) => {
  3260.         if (!evt || !evt.isTrusted) return;
  3261.         if (currentMouseDown) {
  3262.           lastMouseUp = dateNow();
  3263.           currentMouseDown = false;
  3264.           lastUserInteraction = lastMouseUp;
  3265.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3266.         }
  3267.       }, passiveCapture);
  3268.  
  3269.       document.addEventListener('touchstart', (evt) => {
  3270.         if (!evt || !evt.isTrusted) return;
  3271.         lastTouchDown = dateNow();
  3272.         currentTouchDown = true;
  3273.         lastUserInteraction = lastTouchDown;
  3274.       }, passiveCapture);
  3275.  
  3276.       document.addEventListener('touchmove', (evt) => {
  3277.         if (!evt || !evt.isTrusted) return;
  3278.         lastTouchDown = dateNow();
  3279.         currentTouchDown = true;
  3280.         lastUserInteraction = lastTouchDown;
  3281.       }, passiveCapture);
  3282.  
  3283.       document.addEventListener('touchend', (evt) => {
  3284.         if (!evt || !evt.isTrusted) return;
  3285.         if (currentTouchDown) {
  3286.           lastTouchUp = dateNow();
  3287.           currentTouchDown = false;
  3288.           lastUserInteraction = lastTouchUp;
  3289.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3290.         }
  3291.       }, passiveCapture);
  3292.  
  3293.       document.addEventListener('touchcancel', (evt) => {
  3294.         if (!evt || !evt.isTrusted) return;
  3295.         if (currentTouchDown) {
  3296.           lastTouchUp = dateNow();
  3297.           currentTouchDown = false;
  3298.           lastUserInteraction = lastTouchUp;
  3299.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  3300.         }
  3301.       }, passiveCapture);
  3302.  
  3303.  
  3304.     }
  3305.  
  3306.     const getTimestampUsec = (itemRenderer) => {
  3307.       if (itemRenderer && 'timestampUsec' in itemRenderer) {
  3308.         return itemRenderer.timestampUsec
  3309.       } else if (itemRenderer && itemRenderer.showItemEndpoint) {
  3310.         const messageRenderer = ((itemRenderer.showItemEndpoint.showLiveChatItemEndpoint || 0).renderer || 0);
  3311.         if (messageRenderer) {
  3312.  
  3313.           const messageRendererKey = firstObjectKey(messageRenderer);
  3314.           if (messageRendererKey && messageRenderer[messageRendererKey]) {
  3315.             const messageRendererData = messageRenderer[messageRendererKey];
  3316.             if (messageRendererData && 'timestampUsec' in messageRendererData) {
  3317.               return messageRendererData.timestampUsec
  3318.             }
  3319.           }
  3320.         }
  3321.       }
  3322.       return null;
  3323.     }
  3324.  
  3325.     const onRegistryReadyForDOMOperations = () => {
  3326.  
  3327.       let firstCheckedOnYtInit = false;
  3328.  
  3329.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  3330.  
  3331.       const mightFirstCheckOnYtInit = () => {
  3332.         if (firstCheckedOnYtInit) return;
  3333.         firstCheckedOnYtInit = true;
  3334.  
  3335.         if (!document.body || !document.head) return;
  3336.         if (!assertorURL()) return;
  3337.  
  3338.         addCssManaged();
  3339.  
  3340.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  3341.         if (efsContainer && efsContainer.parentNode !== document.body) {
  3342.           document.body.appendChild(efsContainer);
  3343.         }
  3344.  
  3345.       };
  3346.  
  3347.       if (!assertorURL()) return;
  3348.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  3349.  
  3350.       if (document.documentElement && document.head) {
  3351.         addCssManaged();
  3352.       }
  3353.       // console.log(document.body===null)
  3354.  
  3355.       if (ATTEMPT_TICKER_ANIMATION_START_TIME_DETECTION) {
  3356.         getLCRDummy().then(async (lcrDummy) => {
  3357.  
  3358.           const tag = "yt-live-chat-renderer"
  3359.           const dummy = lcrDummy;
  3360.  
  3361.           const cProto = getProto(dummy);
  3362.           if (!cProto || !cProto.attached) {
  3363.             console.warn(`proto.attached for ${tag} is unavailable.`);
  3364.             return;
  3365.           }
  3366.  
  3367.           mightFirstCheckOnYtInit();
  3368.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-renderer hacks");
  3369.           console.log("[Begin]");
  3370.  
  3371.  
  3372.  
  3373.  
  3374.  
  3375.  
  3376.           if (typeof cProto.playerProgressChanged_ === 'function' && !cProto.playerProgressChanged32_) {
  3377.  
  3378.             cProto.playerProgressChanged32_ = cProto.playerProgressChanged_;
  3379.  
  3380.             const pop078 = function () {
  3381.               const r = this.pop78();
  3382.  
  3383.               if (r && (r.actions || 0).length >= 1 && r.videoOffsetTimeMsec) {
  3384.                 for (const action of r.actions) {
  3385.  
  3386.                   const itemActionKey = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3387.                   if (itemActionKey) {
  3388.  
  3389.                     const itemAction = action[itemActionKey];
  3390.                     const item = (itemAction || 0).item;
  3391.                     if (typeof item === 'object') {
  3392.  
  3393.                       const rendererKey = firstObjectKey(item);
  3394.                       if (rendererKey) {
  3395.                         const renderer = item[rendererKey];
  3396.                         if (renderer && typeof renderer === 'object') {
  3397.                           renderer.__videoOffsetTimeMsec__ = r.videoOffsetTimeMsec;
  3398.                           renderer.__progressAt__ = playerProgressChangedArg1;
  3399.                         }
  3400.  
  3401.                       }
  3402.  
  3403.                     }
  3404.                   }
  3405.                 }
  3406.               }
  3407.               return r;
  3408.             }
  3409.  
  3410.             cProto.playerProgressChanged_ = function (a, b, c) {
  3411.               playerProgressChangedArg1 = a;
  3412.               playerProgressChangedArg2 = b;
  3413.               playerProgressChangedArg3 = c;
  3414.               const replayBuffer_ = this.replayBuffer_;
  3415.               if (replayBuffer_) {
  3416.                 const replayQueue = replayBuffer_.replayQueue
  3417.                 if (replayQueue && typeof replayQueue === 'object' && !replayQueue.qe3) {
  3418.  
  3419.                   replayBuffer_.replayQueue = new Proxy(replayBuffer_.replayQueue, {
  3420.                     get(target, prop, receiver) {
  3421.                       if (prop === 'qe3') return 1;
  3422.                       const v = target[prop];
  3423.                       if (prop === 'front_') {
  3424.                         if (v && typeof v.length === 'number') {
  3425.                           if (!v.pop78) {
  3426.                             v.pop78 = v.pop;
  3427.                             v.pop = pop078;
  3428.                           }
  3429.                         }
  3430.                       }
  3431.                       return v;
  3432.                     }
  3433.                   });
  3434.  
  3435.                 }
  3436.               }
  3437.               return this.playerProgressChanged32_.apply(this, arguments);
  3438.             };
  3439.  
  3440.           }
  3441.  
  3442.           // if (typeof cProto.immediatelyApplyLiveChatActions === 'function' && !cProto.immediatelyApplyLiveChatActions32) {
  3443.  
  3444.           //   cProto.immediatelyApplyLiveChatActions32 = cProto.immediatelyApplyLiveChatActions;
  3445.  
  3446.           //   cProto.immediatelyApplyLiveChatActions = function (a) {
  3447.           //     // if (a.length > 8) {
  3448.           //     //   console.log(a)
  3449.           //     // }
  3450.           //     // console.log(a)
  3451.           //     /*
  3452.           //     let arr=a.slice();
  3453.  
  3454.           //     if(arr.length >= 2){
  3455.           //       arr.sort((a, b)=>{
  3456.           //         let ak = firstObjectKey(a);
  3457.           //         let bk = firstObjectKey(b);
  3458.           //         if(!ak||!bk) return 0;
  3459.           //         const ax = +a[ak]._timestampUsec57;
  3460.           //         const bx = +b[bk]._timestampUsec57;
  3461.           //         if(ax >0 && bx >0){
  3462.           //           const c =  bx - ax ;
  3463.  
  3464.           //           return c > 0.1 ? -1 : c< -0.1 ? 1 : 0;
  3465.           //         }
  3466.           //         return 0;
  3467.  
  3468.           //       });
  3469.           //       console.log('sort', JSON.parse(JSON.stringify(arr)));
  3470.           //     }
  3471.           //     a=arr;
  3472.           //     */
  3473.  
  3474.           //     if (a && typeof a === 'object' && a.length >= 1) {
  3475.           //       const d = Date.now();
  3476.           //       const m = [];
  3477.           //       for (let i = 0, l = a.length; i < l; i++) {
  3478.           //         const action = a[i];
  3479.           //         const key = !action ? null : 'addChatItemAction' in action ? 'addChatItemAction' : 'addLiveChatTickerItemAction' in action ? 'addLiveChatTickerItemAction' : null;
  3480.           //         if (key === 'addChatItemAction' || key === 'addLiveChatTickerItemAction') {
  3481.           //           const itemAction = action[key] || 0;
  3482.           //           const item = itemAction.item || 0;
  3483.           //           if (item && typeof item === 'object') {
  3484.           //             let rendererKey = firstObjectKey(item);
  3485.           //             const renderer = item[rendererKey];
  3486.           //             let timestampUsec = getTimestampUsec(renderer);
  3487.           //             if (timestampUsec !== null) {
  3488.           //               renderer._timestampUsec57 = timestampUsec;
  3489.           //             }
  3490.           //             m.push(renderer);
  3491.           //             // if(timestampUsec!==null){
  3492.           //             //   if(key==='addLiveChatTickerItemAction')console.log(renderer, rendererKey, key)
  3493.           //             //   m.push(renderer);
  3494.  
  3495.           //             // }
  3496.           //           }
  3497.           //         }
  3498.           //       }
  3499.           //       if (m.length >= 1) {
  3500.  
  3501.           //         let lastUsec = null;
  3502.           //         for (let i = 0, l = m.length; i < l; i++) {
  3503.           //           const renderer = m[i];
  3504.           //           if ('_timestampUsec57' in renderer) {
  3505.           //             lastUsec = +renderer._timestampUsec57 / 1E3;
  3506.           //             renderer.__lcrTime__ = d;
  3507.           //             renderer.__actionAt__ = d;
  3508.           //           }
  3509.           //         }
  3510.  
  3511.  
  3512.           //         if (lastUsec !== null) {
  3513.  
  3514.           //           const refUsec = lastUsec
  3515.  
  3516.           //           let prevUsec = null;
  3517.           //           for (let i = 0, l = m.length; i < l; i++) {
  3518.           //             const renderer = m[i];
  3519.           //             if ('_timestampUsec57' in renderer) {
  3520.  
  3521.           //               let actualTime = +renderer._timestampUsec57 / 1E3; // ms
  3522.           //               let lcrTime = d - Math.round(refUsec - actualTime); // ms
  3523.  
  3524.           //               renderer.__lcrTime__ = lcrTime; // ms
  3525.           //               renderer.__actionAt__ = d;
  3526.  
  3527.           //               prevUsec = lcrTime
  3528.           //             } else {
  3529.  
  3530.           //               renderer._prevUsec57 = prevUsec;
  3531.           //             }
  3532.           //           }
  3533.  
  3534.  
  3535.           //           let nextUsec = null;
  3536.           //           for (let i = m.length - 1; i >= 0; i--) {
  3537.           //             const renderer = m[i];
  3538.           //             if ('_timestampUsec57' in renderer) {
  3539.  
  3540.           //               nextUsec = renderer.__lcrTime__
  3541.           //             } else {
  3542.  
  3543.           //               renderer._nextUsec57 = nextUsec;
  3544.  
  3545.           //               if (renderer._nextUsec57 > 0 && renderer._prevUsec57 > 0 && renderer._nextUsec57 > renderer._prevUsec57) {
  3546.           //                 renderer.__lcrTime__ = (renderer._nextUsec57 + renderer._prevUsec57) / 2;
  3547.           //                 renderer.__actionAt__ = d;
  3548.           //               }
  3549.           //             }
  3550.           //           }
  3551.  
  3552.  
  3553.           //         }
  3554.  
  3555.  
  3556.           //       }
  3557.           //     }
  3558.           //     return this.immediatelyApplyLiveChatActions32.apply(this, arguments)
  3559.           //   }
  3560.  
  3561.  
  3562.           // }
  3563.  
  3564.  
  3565.  
  3566.           console.log("[End]");
  3567.           console.groupEnd();
  3568.  
  3569.  
  3570.         });
  3571.  
  3572.       }
  3573.  
  3574.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  3575.  
  3576.         const tag = "yt-live-chat-item-list-renderer"
  3577.         const dummy = document.createElement(tag);
  3578.  
  3579.         const cProto = getProto(dummy);
  3580.         if (!cProto || !cProto.attached) {
  3581.           console.warn(`proto.attached for ${tag} is unavailable.`);
  3582.           return;
  3583.         }
  3584.  
  3585.         mightFirstCheckOnYtInit();
  3586.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  3587.         console.log("[Begin]");
  3588.  
  3589.         const mclp = cProto;
  3590.         try {
  3591.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  3592.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  3593.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3594.           assertor(() => typeof mclp.setAtBottom === 'function');
  3595.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  3596.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  3597.         } catch (e) { }
  3598.  
  3599.  
  3600.         try {
  3601.           assertor(() => typeof mclp.attached === 'function');
  3602.           assertor(() => typeof mclp.detached === 'function');
  3603.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  3604.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  3605.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  3606.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  3607.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  3608.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  3609.         } catch (e) { }
  3610.  
  3611.         mclp.__intermediate_delay__ = null;
  3612.  
  3613.         let mzk = 0;
  3614.         let myk = 0;
  3615.         let mlf = 0;
  3616.         let myw = 0;
  3617.         let mzt = 0;
  3618.         let zarr = null;
  3619.         let mlg = 0;
  3620.  
  3621.         if ((mclp.clearList || 0).length === 0) {
  3622.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3623.           mclp.clearList66 = mclp.clearList;
  3624.           mclp.clearList = function () {
  3625.             mzk++;
  3626.             myk++;
  3627.             mlf++;
  3628.             myw++;
  3629.             mzt++;
  3630.             mlg++;
  3631.             zarr = null;
  3632.             this.__intermediate_delay__ = null;
  3633.             this.clearList66();
  3634.           };
  3635.           console.log("clearList", "OK");
  3636.         } else {
  3637.           console.log("clearList", "NG");
  3638.         }
  3639.  
  3640.  
  3641.         let onListRendererAttachedDone = false;
  3642.  
  3643.         function setList(itemOffset, items) {
  3644.  
  3645.           const isFirstTime = onListRendererAttachedDone === false;
  3646.  
  3647.           if (isFirstTime) {
  3648.             onListRendererAttachedDone = true;
  3649.             Promise.resolve().then(watchUserCSS);
  3650.             addCssManaged();
  3651.             setupEvents();
  3652.           }
  3653.  
  3654.           setupStyle(itemOffset, items);
  3655.  
  3656.           setupMutObserver(items);
  3657.         }
  3658.  
  3659.         mclp.attached419 = async function () {
  3660.  
  3661.           if (!this.isAttached) return;
  3662.  
  3663.           let maxTrial = 16;
  3664.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3665.             if (--maxTrial < 0 || !this.isAttached) return;
  3666.             await new Promise(requestAnimationFrame);
  3667.           }
  3668.  
  3669.           if (this.isAttached !== true) return;
  3670.  
  3671.           if (!this.$) {
  3672.             console.warn("!this.$");
  3673.             return;
  3674.           }
  3675.           if (!this.$) return;
  3676.           /** @type {HTMLElement | null} */
  3677.           const itemScroller = this.$['item-scroller'];
  3678.           /** @type {HTMLElement | null} */
  3679.           const itemOffset = this.$['item-offset'];
  3680.           /** @type {HTMLElement | null} */
  3681.           const items = this.$['items'];
  3682.  
  3683.           if (!itemScroller || !itemOffset || !items) {
  3684.             console.warn("items.parentNode !== itemOffset");
  3685.             return;
  3686.           }
  3687.  
  3688.           if (nodeParent(items) !== itemOffset) {
  3689.  
  3690.             console.warn("items.parentNode !== itemOffset");
  3691.             return;
  3692.           }
  3693.  
  3694.  
  3695.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3696.  
  3697.             console.warn("id incorrect");
  3698.             return;
  3699.           }
  3700.  
  3701.           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')
  3702.  
  3703.           if (!isTargetItems) {
  3704.             console.warn("!isTargetItems");
  3705.             return;
  3706.           }
  3707.  
  3708.           setList(itemOffset, items);
  3709.  
  3710.         }
  3711.  
  3712.         mclp.attached331 = mclp.attached;
  3713.         mclp.attached = function () {
  3714.           this.attached419 && this.attached419();
  3715.           return this.attached331();
  3716.         }
  3717.  
  3718.         mclp.detached331 = mclp.detached;
  3719.  
  3720.         mclp.detached = function () {
  3721.           setupMutObserver();
  3722.           return this.detached331();
  3723.         }
  3724.  
  3725.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3726.         for (const t29 of t29s) {
  3727.           if (insp(t29).isAttached === true) {
  3728.             t29.attached419();
  3729.           }
  3730.         }
  3731.  
  3732.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3733.  
  3734.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3735.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3736.  
  3737.           /** @type {Map<number, any>} */
  3738.           const aMap = new Map();
  3739.           let count = 6150;
  3740.           mclp.async66 = mclp.async;
  3741.           mclp.async = function (e, f) {
  3742.             // ensure the previous operation is done
  3743.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3744.             const hasF = arguments.length === 2;
  3745.             const stack = new Error().stack;
  3746.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3747.             if (count > 1e9) count = 6159;
  3748.             const resId = ++count;
  3749.             aMap.set(resId, e);
  3750.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3751.               const rp = aMap.get(resId);
  3752.               if (typeof rp !== 'function') {
  3753.                 return;
  3754.               }
  3755.               let cancelCall = false;
  3756.               if (isFlushAsync) {
  3757.                 if (rk < 0) {
  3758.                   cancelCall = true;
  3759.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3760.                   cancelCall = true;
  3761.                 }
  3762.               }
  3763.               if (cancelCall) {
  3764.                 aMap.delete(resId);
  3765.               } else {
  3766.                 const asyncEn = function () {
  3767.                   aMap.delete(resId);
  3768.                   return rp.apply(this, arguments);
  3769.                 };
  3770.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3771.               }
  3772.             });
  3773.  
  3774.             return resId;
  3775.           }
  3776.  
  3777.           mclp.cancelAsync66 = mclp.cancelAsync;
  3778.           mclp.cancelAsync = function (resId) {
  3779.             if (resId <= 6150) {
  3780.               this.cancelAsync66(resId);
  3781.             } else if (aMap.has(resId)) {
  3782.               const rp = aMap.get(resId);
  3783.               aMap.delete(resId);
  3784.               if (typeof rp !== 'function') {
  3785.                 this.cancelAsync66(rp);
  3786.               }
  3787.             }
  3788.           }
  3789.  
  3790.           console.log("async", "OK");
  3791.         } else {
  3792.           console.log("async", "NG");
  3793.         }
  3794.  
  3795.  
  3796.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3797.  
  3798.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3799.           mclp.showNewItems66_ = mclp.showNewItems_;
  3800.  
  3801.           mclp.showNewItems77_ = async function () {
  3802.             if (myk > 1e9) myk = 9;
  3803.             let tid = ++myk;
  3804.  
  3805.             await new Promise(requestAnimationFrame);
  3806.  
  3807.             if (tid !== myk) {
  3808.               return;
  3809.             }
  3810.  
  3811.             const cnt = this;
  3812.  
  3813.             await Promise.resolve();
  3814.             cnt.showNewItems66_();
  3815.  
  3816.             await Promise.resolve();
  3817.  
  3818.           }
  3819.  
  3820.           mclp.showNewItems_ = function () {
  3821.  
  3822.             const cnt = this;
  3823.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3824.               cnt.showNewItems77_().then(() => {
  3825.                 resolve();
  3826.               });
  3827.             });
  3828.           }
  3829.  
  3830.           console.log("showNewItems_", "OK");
  3831.         } else {
  3832.           console.log("showNewItems_", "NG");
  3833.         }
  3834.  
  3835.  
  3836.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3837.  
  3838.           const sfi = fnIntegrity(mclp.flushActiveItems_);
  3839.           if (sfi === '0.150.84') {
  3840.             // https://www.youtube.com/s/desktop/e4d15d2c/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  3841.             // var b = Math.max(this.visibleItems.length + this.activeItems_.length - this.data.maxItemsToDisplay, 0);
  3842.             //     b && this.splice("visibleItems", 0, b);
  3843.             //     if (this.isSmoothScrollEnabled_() || this.dockableMessages.length)
  3844.             //         this.preinsertHeight_ = this.items.clientHeight;
  3845.             //     this.activeItems_.unshift("visibleItems");
  3846.             //     try {
  3847.             //         this.push.apply(this, this.activeItems_)
  3848.             //     } catch (c) {
  3849.             //         nm(c)
  3850.             //     }
  3851.             //     this.activeItems_ = [];
  3852.             //     this.isSmoothScrollEnabled_() ? this.canScrollToBottom_() && zQ(function() {
  3853.             //         a.showNewItems_()
  3854.             //     }) : zQ(function() {
  3855.             //         a.maybeScrollToBottom_()
  3856.             //     })
  3857.           } else if (sfi === '0.137.81' || sfi === '0.138.81') {
  3858.             // e.g. https://www.youtube.com/yts/jsbin/live_chat_polymer-vflCyWEBP/live_chat_polymer.js
  3859.           } else {
  3860.             assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.150.84'));
  3861.           }
  3862.  
  3863.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3864.  
  3865.           let contensWillChangeController = null;
  3866.  
  3867.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3868.  
  3869.           mclp.flushActiveItems78_ = async function (tid) {
  3870.             try {
  3871.               if (tid !== mlf) return;
  3872.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3873.               let logger = false;
  3874.               const cnt = this;
  3875.               let immd = cnt.__intermediate_delay__;
  3876.               await new Promise(requestAnimationFrame);
  3877.  
  3878.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3879.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3880.  
  3881.               mlf++;
  3882.               if (mlg > 1e9) mlg = 9;
  3883.               ++mlg;
  3884.  
  3885.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3886.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3887.               let changeMaxItemsToDisplay = false;
  3888.               const activeItemsLen = this.activeItems_.length;
  3889.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3890.                 logger = true;
  3891.  
  3892.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3893.  
  3894.                 logger && console.log('[Begin]')
  3895.  
  3896.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3897.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3898.                   console.log('reduce maxitems');
  3899.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3900.                     // as all the rendered chats are already "outdated"
  3901.                     // all old chats shall remove and reduced number of few chats will be rendered
  3902.                     // then restore to the original number
  3903.                     changeMaxItemsToDisplay = true;
  3904.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3905.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3906.                   }
  3907.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3908.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3909.  
  3910.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3911.                 } else {
  3912.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3913.  
  3914.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3915.                 }
  3916.               }
  3917.               // it is found that it will render all stacked chats after switching back from background
  3918.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3919.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3920.  
  3921.  
  3922.               const items = (cnt.$ || 0).items;
  3923.  
  3924.               if (USE_WILL_CHANGE_CONTROLLER) {
  3925.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3926.                   contensWillChangeController.release();
  3927.                   contensWillChangeController = null;
  3928.                 }
  3929.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3930.               }
  3931.               const wcController = contensWillChangeController;
  3932.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3933.               wcController && wcController.beforeOper();
  3934.               await Promise.resolve();
  3935.               const acItems = cnt.activeItems_;
  3936.               const len1 = acItems.length;
  3937.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3938.               let waitFor = [];
  3939.  
  3940.  
  3941.               /** @type {Set<string>} */
  3942.               const imageLinks = new Set();
  3943.  
  3944.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3945.                 for (const item of acItems) {
  3946.                   fixLiveChatItem(item, imageLinks);
  3947.                 }
  3948.               }
  3949.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3950.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3951.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3952.  
  3953.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3954.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3955.                 // preload performs the high priority fetching.
  3956.                 // prefetch delays the chat display if the video resoruce is demanding.
  3957.  
  3958.                 if (rel) {
  3959.  
  3960.                   imageLinks.forEach(imageLink => {
  3961.                     let d = false;
  3962.                     const isEmoji = imageLink.includes('/emoji/');
  3963.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3964.                     if (!pretechedSet.has(imageLink)) {
  3965.                       pretechedSet.add(imageLink);
  3966.                       d = true;
  3967.                     }
  3968.                     if (d) {
  3969.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3970.  
  3971.                     }
  3972.                   })
  3973.  
  3974.                 }
  3975.  
  3976.               }
  3977.  
  3978.               const noVisibleItem1 = ((cnt.visibleItems || 0).length || 0) === 0;
  3979.               skipDontRender = noVisibleItem1;
  3980.               // console.log('ss1', Date.now())
  3981.               if (waitFor.length > 0) {
  3982.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3983.               }
  3984.               waitFor.length = 0;
  3985.               waitFor = null;
  3986.               // console.log('ss2', Date.now())
  3987.               cnt.flushActiveItems66_();
  3988.               const noVisibleItem2 = ((cnt.visibleItems || 0).length || 0) === 0;
  3989.               skipDontRender = noVisibleItem2;
  3990.               const len2 = cnt.activeItems_.length;
  3991.               const bAsync = len1 !== len2;
  3992.               await Promise.resolve();
  3993.               if (wcController) {
  3994.                 if (bAsync) {
  3995.                   cnt.async(() => {
  3996.                     wcController.afterOper();
  3997.                   });
  3998.                 } else {
  3999.                   wcController.afterOper();
  4000.                 }
  4001.               }
  4002.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  4003.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  4004.  
  4005.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  4006.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  4007.               } else if (changeMaxItemsToDisplay) {
  4008.  
  4009.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  4010.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  4011.                   reducedMaxItemsToDisplay,
  4012.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  4013.                 });
  4014.               }
  4015.               logger && console.log('[End]');
  4016.  
  4017.               logger && console.groupEnd();
  4018.  
  4019.               if (noVisibleItem1 && !noVisibleItem2) {
  4020.                 // fix possible no auto scroll issue.
  4021.                 setTimeout(() => cnt.setAtBottom(), 1);
  4022.               }
  4023.  
  4024.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  4025.  
  4026.  
  4027.                 const ff = () => {
  4028.  
  4029.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4030.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4031.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  4032.                     cnt.scrollToBottom_();
  4033.  
  4034.                     Promise.resolve().then(() => {
  4035.  
  4036.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  4037.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  4038.                     });
  4039.  
  4040.  
  4041.                   }
  4042.                 }
  4043.  
  4044.                 ff();
  4045.  
  4046.  
  4047.                 Promise.resolve().then(ff);
  4048.  
  4049.                 // requestAnimationFrame(ff);
  4050.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  4051.  
  4052.                 const knt = cnt;
  4053.                 if (!scrollChatFn) {
  4054.                   const cnt = knt;
  4055.                   const f = () => {
  4056.                     const itemScroller = cnt.itemScroller;
  4057.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  4058.                     if (!cnt.atBottom) {
  4059.                       cnt.scrollToBottom_();
  4060.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  4061.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  4062.                     }
  4063.                   };
  4064.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  4065.                 }
  4066.  
  4067.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  4068.               }
  4069.  
  4070.               return 1;
  4071.  
  4072.  
  4073.             } catch (e) {
  4074.               console.warn(e);
  4075.             }
  4076.           }
  4077.  
  4078.           mclp.flushActiveItems77_ = function () {
  4079.  
  4080.             return new Promise(resResolve => {
  4081.               try {
  4082.                 const cnt = this;
  4083.                 if (mlf > 1e9) mlf = 9;
  4084.                 let tid = ++mlf;
  4085.                 const hostElement = cnt.hostElement || cnt;
  4086.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  4087.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  4088.  
  4089.                 // 4 times to maxItems to avoid frequent trimming.
  4090.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  4091.  
  4092.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  4093.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  4094.                 if (cnt.canScrollToBottom_()) {
  4095.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  4096.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  4097.                     .then((asyncResult) => {
  4098.                       resResolve(asyncResult); // either undefined or 1
  4099.                       resResolve = null;
  4100.                     }).catch((e) => {
  4101.                       console.warn(e);
  4102.                       if (resResolve) resResolve();
  4103.                     });
  4104.                 } else {
  4105.                   resResolve(2);
  4106.                   resResolve = null;
  4107.                 }
  4108.               } catch (e) {
  4109.                 console.warn(e);
  4110.                 if (resResolve) resResolve();
  4111.               }
  4112.  
  4113.  
  4114.             });
  4115.  
  4116.           }
  4117.  
  4118.           mclp.flushActiveItems_ = function () {
  4119.             const cnt = this;
  4120.  
  4121.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  4122.  
  4123.             if (cnt.activeItems_.length === 0) {
  4124.               cnt.__intermediate_delay__ = null;
  4125.               return;
  4126.             }
  4127.  
  4128.             const cntData = ((cnt || 0).data || 0);
  4129.             if (cntData.maxItemsToDisplay944 === undefined) {
  4130.               cntData.maxItemsToDisplay944 = null;
  4131.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  4132.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  4133.             }
  4134.  
  4135.             // ignore previous __intermediate_delay__ and create a new one
  4136.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4137.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  4138.                 if (rt === 1) {
  4139.                   resolve(1); // success, scroll to bottom
  4140.                   if (hasMoreMessageState === 1) {
  4141.                     hasMoreMessageState = 0;
  4142.                     const showMore = (cnt.$ || 0)['show-more'];
  4143.                     if (showMore) {
  4144.                       showMore.classList.remove('has-new-messages-miuzp');
  4145.                     }
  4146.                   }
  4147.                 }
  4148.                 else if (rt === 2) {
  4149.                   resolve(2); // success, trim
  4150.                   if (hasMoreMessageState === 0) {
  4151.                     hasMoreMessageState = 1;
  4152.                     const showMore = cnt.$['show-more'];
  4153.                     if (showMore) {
  4154.                       showMore.classList.add('has-new-messages-miuzp');
  4155.                     }
  4156.                   }
  4157.                 }
  4158.                 else resolve(-1); // skip
  4159.               }).catch(e => {
  4160.                 console.warn(e);
  4161.               });
  4162.             });
  4163.  
  4164.           }
  4165.           console.log("flushActiveItems_", "OK");
  4166.         } else {
  4167.           console.log("flushActiveItems_", "NG");
  4168.         }
  4169.  
  4170.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  4171.           try {
  4172.             if (mlg > 1e9) mlg = 9;
  4173.             const tid = ++mlg;
  4174.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  4175.             const runCond = () => this.canScrollToBottom_();
  4176.             if (!keepTrialCond()) return;
  4177.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  4178.             await new Promise(r => setTimeout(r, 80));
  4179.             if (!keepTrialCond()) return;
  4180.             if (runCond()) return this.flushActiveItems_() | 1;
  4181.             await new Promise(requestAnimationFrame);
  4182.             if (runCond()) return this.flushActiveItems_() | 1;
  4183.           } catch (e) {
  4184.             console.warn(e);
  4185.           }
  4186.         }
  4187.  
  4188.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  4189.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  4190.  
  4191.           const sfi = fnIntegrity(mclp.atBottomChanged_);
  4192.           if (sfi === '1.73.37') {
  4193.             // https://www.youtube.com/s/desktop/e4d15d2c/jsbin/live_chat_polymer.vflset/live_chat_polymer.js
  4194.           } else if (sfi === '1.75.39') {
  4195.             // e.g. https://www.youtube.com/yts/jsbin/live_chat_polymer-vflCyWEBP/live_chat_polymer.js
  4196.           } else {
  4197.             assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.73.37'));
  4198.           }
  4199.  
  4200.           const querySelector = HTMLElement.prototype.querySelector;
  4201.           const U = (element) => ({
  4202.             querySelector: (selector) => querySelector.call(element, selector)
  4203.           });
  4204.  
  4205.           let qid = 0;
  4206.           mclp.atBottomChanged_ = function (a) {
  4207.             let tid = ++qid;
  4208.             let b = this;
  4209.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  4210.               if (tid !== qid) return;
  4211.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  4212.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  4213.               this.hideShowMoreAsync_ = null,
  4214.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  4215.           }
  4216.  
  4217.           console.log("atBottomChanged_", "OK");
  4218.         } else {
  4219.           console.log("atBottomChanged_", "NG");
  4220.         }
  4221.  
  4222.         if ((mclp.onScrollItems_ || 0).length === 1) {
  4223.  
  4224.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  4225.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  4226.           mclp.onScrollItems77_ = async function (evt) {
  4227.             if (myw > 1e9) myw = 9;
  4228.             let tid = ++myw;
  4229.  
  4230.             await new Promise(requestAnimationFrame);
  4231.  
  4232.             if (tid !== myw) {
  4233.               return;
  4234.             }
  4235.  
  4236.             const cnt = this;
  4237.  
  4238.             await Promise.resolve();
  4239.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  4240.               await Promise.resolve().then(() => {
  4241.                 this.ytRendererBehavior.onScroll(evt);
  4242.               }).then(() => {
  4243.                 if (this.canScrollToBottom_()) {
  4244.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  4245.                   if (hasUserJustInteracted) {
  4246.                     // only when there is an user action
  4247.                     this.setAtBottom();
  4248.                     return 1;
  4249.                   }
  4250.                 } else {
  4251.                   // no message inserting
  4252.                   this.setAtBottom();
  4253.                   return 1;
  4254.                 }
  4255.               }).then((r) => {
  4256.  
  4257.                 if (this.activeItems_.length) {
  4258.  
  4259.                   if (this.canScrollToBottom_()) {
  4260.                     this.flushActiveItems_();
  4261.                     return 1 && r;
  4262.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  4263.                     // delayed due to user action
  4264.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  4265.                     return 0;
  4266.                   }
  4267.                 }
  4268.               }).then((r) => {
  4269.                 if (r) {
  4270.                   // ensure setAtBottom is correctly set
  4271.                   this.setAtBottom();
  4272.                 }
  4273.               });
  4274.             } else {
  4275.               cnt.onScrollItems66_(evt);
  4276.             }
  4277.  
  4278.             await Promise.resolve();
  4279.  
  4280.           }
  4281.  
  4282.           mclp.onScrollItems_ = function (evt) {
  4283.  
  4284.             const cnt = this;
  4285.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4286.               cnt.onScrollItems77_(evt).then(() => {
  4287.                 resolve();
  4288.               });
  4289.             });
  4290.           }
  4291.           console.log("onScrollItems_", "OK");
  4292.         } else {
  4293.           console.log("onScrollItems_", "NG");
  4294.         }
  4295.  
  4296.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  4297.  
  4298.           const sfi = fnIntegrity(mclp.handleLiveChatActions_);
  4299.           if (sfi === '1.39.20') {
  4300.             // TBC
  4301.           } else if (sfi === '1.31.17') {
  4302.             // original
  4303.           } else {
  4304.             assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  4305.           }
  4306.  
  4307.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  4308.  
  4309.           mclp.handleLiveChatActions77_ = async function (arr) {
  4310.             if (typeof (arr || 0).length !== 'number') {
  4311.               this.handleLiveChatActions66_(arr);
  4312.               return;
  4313.             }
  4314.             if (mzt > 1e9) mzt = 9;
  4315.             let tid = ++mzt;
  4316.  
  4317.             if (zarr === null) zarr = arr;
  4318.             else Array.prototype.push.apply(zarr, arr);
  4319.             arr = null;
  4320.  
  4321.             await new Promise(requestAnimationFrame);
  4322.  
  4323.             if (tid !== mzt || zarr === null) {
  4324.               return;
  4325.             }
  4326.  
  4327.             const carr = zarr;
  4328.             zarr = null;
  4329.  
  4330.             await Promise.resolve();
  4331.             this.handleLiveChatActions66_(carr);
  4332.             await Promise.resolve();
  4333.  
  4334.           }
  4335.  
  4336.           mclp.handleLiveChatActions_ = function (arr) {
  4337.  
  4338.             const cnt = this;
  4339.             cnt.__intermediate_delay__ = new Promise(resolve => {
  4340.               cnt.handleLiveChatActions77_(arr).then(() => {
  4341.                 resolve();
  4342.               });
  4343.             });
  4344.           }
  4345.           console.log("handleLiveChatActions_", "OK");
  4346.         } else {
  4347.           console.log("handleLiveChatActions_", "NG");
  4348.         }
  4349.  
  4350.         mclp.hasUserJustInteracted11_ = () => {
  4351.           const t = dateNow();
  4352.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  4353.         }
  4354.  
  4355.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  4356.  
  4357.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  4358.  
  4359.           mclp.canScrollToBottom_ = function () {
  4360.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  4361.           }
  4362.  
  4363.           console.log("canScrollToBottom_", "OK");
  4364.         } else {
  4365.           console.log("canScrollToBottom_", "NG");
  4366.         }
  4367.  
  4368.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  4369.  
  4370.           mclp.isSmoothScrollEnabled_ = function () {
  4371.             return false;
  4372.           }
  4373.  
  4374.           mclp.maybeResizeScrollContainer_ = function () {
  4375.             //
  4376.           }
  4377.  
  4378.           mclp.refreshOffsetContainerHeight_ = function () {
  4379.             //
  4380.           }
  4381.  
  4382.           mclp.smoothScroll_ = function () {
  4383.             //
  4384.           }
  4385.  
  4386.           mclp.resetSmoothScroll_ = function () {
  4387.             //
  4388.           }
  4389.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  4390.         } else {
  4391.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  4392.         }
  4393.  
  4394.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4395.  
  4396.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  4397.           mclp.handleAddChatItemAction_ = function (a) {
  4398.             try {
  4399.               if (a && typeof a === 'object' && !('length' in a)) {
  4400.                 fixLiveChatItem(a.item, null);
  4401.                 console.assert(arguments[0] === a);
  4402.               }
  4403.             } catch (e) { console.warn(e) }
  4404.             return this.handleAddChatItemAction66_.apply(this, arguments);
  4405.           }
  4406.  
  4407.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4408.         } else {
  4409.  
  4410.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  4411.         }
  4412.  
  4413.  
  4414.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  4415.  
  4416.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  4417.           mclp.handleReplaceChatItemAction_ = function (a) {
  4418.             try {
  4419.               if (a && typeof a === 'object' && !('length' in a)) {
  4420.                 fixLiveChatItem(a.replacementItem, null);
  4421.                 console.assert(arguments[0] === a);
  4422.               }
  4423.             } catch (e) { console.warn(e) }
  4424.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  4425.           }
  4426.  
  4427.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4428.         } else {
  4429.  
  4430.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  4431.         }
  4432.  
  4433.         console.log("[End]");
  4434.         console.groupEnd();
  4435.  
  4436.       }).catch(console.warn);
  4437.  
  4438.  
  4439.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  4440.  
  4441.         let yd = (this.__dataHost || insp(this).__dataHost || 0).__data;
  4442.  
  4443.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  4444.  
  4445.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  4446.           let v = `${attrValue}`;
  4447.           // conside a ticker is 101px width
  4448.           // 1% = 1.01px
  4449.           // 0.2% = 0.202px
  4450.  
  4451.  
  4452.           const ratio1 = (yd.ratio * 100);
  4453.           if (ratio1 > -1) { // avoid NaN
  4454.  
  4455.             // countdownDurationMs
  4456.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  4457.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  4458.             // 150000 - 1%    <1% = 1.5s>
  4459.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  4460.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  4461.  
  4462.             // 99px * 5% = 4.95px
  4463.  
  4464.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  4465.  
  4466.  
  4467.             // 1% Duration
  4468.  
  4469.             let ratio2 = ratio1;
  4470.  
  4471.             const ydd = yd.data;
  4472.             if (ydd) {
  4473.  
  4474.               const d1 = ydd.durationSec;
  4475.               const d2 = ydd.fullDurationSec;
  4476.  
  4477.               // @ step timing [min. 0.2%]
  4478.               let numOfSteps = 500;
  4479.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  4480.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  4481.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  4482.                 else if (d2 > 100) numOfSteps = 100; // 1%
  4483.                 else if (d2 > 50) numOfSteps = 50; // 2%
  4484.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  4485.                 else numOfSteps = 20;
  4486.               }
  4487.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4488.               if (numOfSteps < 5) numOfSteps = 5;
  4489.  
  4490.               const rd = numOfSteps / 100.0;
  4491.  
  4492.               ratio2 = Math.round(ratio2 * rd) / rd;
  4493.  
  4494.               // ratio2 = Math.round(ratio2 * 5) / 5;
  4495.               ratio2 = ratio2.toFixed(1);
  4496.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  4497.  
  4498.               if (yd.__style_last__ === v) return;
  4499.               yd.__style_last__ = v;
  4500.               // do not consider any delay here.
  4501.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  4502.  
  4503.             }
  4504.           }
  4505.  
  4506.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  4507.  
  4508.  
  4509.         } else {
  4510.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  4511.         }
  4512.  
  4513.       };
  4514.  
  4515.  
  4516.       const fpTicker = (renderer) => {
  4517.         const cnt = insp(renderer);
  4518.         assertor(() => typeof (cnt || 0).is === 'string');
  4519.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  4520.         const container = (cnt.$ || 0).container;
  4521.         if (container) {
  4522.           assertor(() => (container || 0).nodeType === 1);
  4523.           assertor(() => typeof container.setAttribute === 'function');
  4524.           container.setAttribute = tickerContainerSetAttribute;
  4525.         } else {
  4526.           console.warn(`"container" does not exist in ${cnt.is}`);
  4527.         }
  4528.       };
  4529.  
  4530.  
  4531.       const tags = [
  4532.         "yt-live-chat-ticker-paid-message-item-renderer",
  4533.         "yt-live-chat-ticker-paid-sticker-item-renderer",
  4534.         "yt-live-chat-ticker-renderer",
  4535.         "yt-live-chat-ticker-sponsor-item-renderer"
  4536.       ];
  4537.  
  4538.  
  4539.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  4540.  
  4541.         mightFirstCheckOnYtInit();
  4542.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  4543.         console.log("[Begin]");
  4544.  
  4545.         let dummyValueForStyleReturn = null;
  4546.  
  4547.         const genDummyValueForStyleReturn = () => {
  4548.           let s = `--nx:82;`
  4549.           let ro = {
  4550.             "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4551.             "implementsGoogStringTypedString": true
  4552.           };
  4553.           ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4554.           return ro;
  4555.         }
  4556.  
  4557.         let isCSSPropertySupported_ = null;
  4558.         const isCSSPropertySupported = () => {
  4559.  
  4560.           // @property --ticker-rtime
  4561.  
  4562.           if (typeof isCSSPropertySupported_ === 'boolean') return isCSSPropertySupported_;
  4563.           isCSSPropertySupported_ = false;
  4564.  
  4565.           if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return false;
  4566.           const documentElement = document.documentElement;
  4567.           if (!documentElement) {
  4568.             console.warn('document.documentElement is not found');
  4569.             return false;
  4570.           }
  4571.           if (`${getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  4572.             return false;
  4573.           }
  4574.  
  4575.           const ae = animate.call(documentElement,
  4576.             [
  4577.               { '--ticker-rtime': '70%' },
  4578.               { '--ticker-rtime': '30%' }
  4579.             ],
  4580.             {
  4581.               fill: "forwards",
  4582.               duration: 1000 * 40,
  4583.               easing: 'linear'
  4584.             }
  4585.           );
  4586.  
  4587.           let animatedValue = getComputedStyle(document.documentElement).getPropertyValue('--ticker-rtime');
  4588.           ae.finish();
  4589.           if (`${animatedValue}`.length !== 3) return false;
  4590.  
  4591.           isCSSPropertySupported_ = true;
  4592.           return true;
  4593.  
  4594.         };
  4595.  
  4596.  
  4597.         let windowShownAt = -1;
  4598.         const setupEventForWindowShownAt = () => {
  4599.           window.addEventListener('visibilitychange', () => {
  4600.             if (document.visibilityState === 'visible') windowShownAt = Date.now();
  4601.             else windowShownAt = 0;
  4602.           }, false);
  4603.         }
  4604.  
  4605.         const dProto = {
  4606.  
  4607.           attachedForTickerInit: function () {
  4608.  
  4609.             fpTicker(this.hostElement || this);
  4610.             return this.attached77();
  4611.  
  4612.           },
  4613.  
  4614.  
  4615.           // doAnimator
  4616.  
  4617.           _makeAnimator: function () {
  4618.             if (this._r782) return;
  4619.             // if (!this.isAttached) return;
  4620.             if (!this._runnerAE) {
  4621.               /** @type {HTMLElement | null} */
  4622.               const aElement = (this.$ || 0).container;
  4623.               if (!aElement) return console.warn("this.$.container is undefined");
  4624.               const da = this.data;
  4625.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  4626.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  4627.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  4628.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  4629.  
  4630.               // if (!this.__tickerBackgroundInitialChecked__) {
  4631.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  4632.               //   console.log('__tickerBackgroundInitialChecked__')
  4633.               //   this._checkTickerBackgroundChanged();
  4634.               // }
  4635.  
  4636.               aElement.style.setProperty('--ticker-c1', c1);
  4637.               aElement.style.setProperty('--ticker-c2', c2);
  4638.               aElement.classList.add(runTickerClassName);
  4639.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4640.               // this._aeStartV = this.countdownMs;
  4641.               // this._aeStartT = this.countdownDurationMs;
  4642.               if (!(p >= 0 && p <= 100)) {
  4643.                 console.warn('incorrect time ratio', p);
  4644.               } else {
  4645.                 /*
  4646.                 const u0 = p.toFixed(4) + '%';
  4647.                 this._runnerAE = animate.call(aElement,
  4648.                   [
  4649.                     { '--ticker-rtime': u0 },
  4650.                     { '--ticker-rtime': '0%' }
  4651.                   ]
  4652.                   ,
  4653.                   {
  4654.                     fill: "forwards",
  4655.                     duration: this.countdownMs,
  4656.                     easing: "linear"
  4657.                   }
  4658.                 );
  4659.                 */
  4660.  
  4661.                 let timingFn = 'linear';
  4662.  
  4663.                 const totalDuration = this.countdownDurationMs;
  4664.  
  4665.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4666.  
  4667.                   // @ step timing [min. 0.2%]
  4668.                   let stepInterval = 0.2; // unit: %
  4669.                   if (totalDuration > 400000) stepInterval = 0.2;
  4670.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4671.                   else if (totalDuration > 100000) stepInterval = 1;
  4672.                   else if (totalDuration > 50000) stepInterval = 2;
  4673.                   else if (totalDuration > 25000) stepInterval = 5;
  4674.                   else stepInterval = 5;
  4675.  
  4676.                   let numOfSteps = Math.round(100 / stepInterval);
  4677.  
  4678.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4679.                   if (numOfSteps < 5) numOfSteps = 5;
  4680.  
  4681.                   timingFn = `steps(${numOfSteps}, end)`;
  4682.  
  4683.                 }
  4684.  
  4685.  
  4686.                 /** @type {Animation} */
  4687.                 const ae = animate.call(aElement,
  4688.                   [
  4689.                     { '--ticker-rtime': '100%' },
  4690.                     { '--ticker-rtime': '0%' }
  4691.                   ]
  4692.                   ,
  4693.                   {
  4694.                     fill: "forwards",
  4695.                     duration: totalDuration,
  4696.                     easing: timingFn
  4697.                   }
  4698.                 );
  4699.  
  4700.                 this._runnerAE = ae;
  4701.  
  4702.                 ae.onfinish = (event) => {
  4703.                   this.onfinish = null;
  4704.                   if (this._runnerAE !== ae) return;
  4705.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4706.                     this._aeFinished(event);
  4707.                   }
  4708.                 }
  4709.  
  4710.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4711.  
  4712.                 if (bq >= 0 && bq <= totalDuration) {
  4713.  
  4714.                   if (bq > totalDuration - 1) {
  4715.                     ae.currentTime = bq;
  4716.                     // setTimeout(() => {
  4717.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4718.                     // }, 1);
  4719.                   } else {
  4720.                     ae.currentTime = bq;
  4721.                   }
  4722.                 } else {
  4723.                   console.warn('Error on setting _runnerAE.currentTime!');
  4724.                 }
  4725.  
  4726.  
  4727.                 aeConstructor = ae.constructor; // constructor is from iframe
  4728.                 return ae;
  4729.               }
  4730.             } else {
  4731.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4732.               // assume just time update
  4733.               const ae = this._runnerAE;
  4734.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4735.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4736.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4737.               if (!(p >= 0 && p <= 100)) {
  4738.                 console.warn('incorrect time ratio', p);
  4739.               } else {
  4740.                 // let u0 = p.toFixed(4) + '%'
  4741.                 /*
  4742.                 ae.effect.setKeyframes([
  4743.                   { '--ticker-rtime': u0 },
  4744.                   { '--ticker-rtime': '0%' }
  4745.                 ]);
  4746.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4747.                 */
  4748.                 // ae.currentTime = 0;
  4749.  
  4750.  
  4751.  
  4752.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4753.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4754.  
  4755.                   this._runnerAE.currentTime = bq
  4756.                 } else {
  4757.                   console.warn('Error on setting _runnerAE.currentTime!');
  4758.                 }
  4759.  
  4760.  
  4761.                 ae.play();
  4762.                 return ae;
  4763.               }
  4764.             }
  4765.           },
  4766.  
  4767.           _aeFinished: function (event) {
  4768.  
  4769.             if (this._r782) return;
  4770.  
  4771.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4772.               this._throwOut();
  4773.               return;
  4774.             }
  4775.  
  4776.             if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4777.  
  4778.             let lc = window.performance.now();
  4779.             this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4780.             if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4781.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  4782.             if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4783.  
  4784.             this.countdownMs = 0;
  4785.             this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null;
  4786.  
  4787.             if (this.isAttached) {
  4788.               let fastRemoved = false;
  4789.               if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4790.                 // no animation if the video page is switched from background to foreground
  4791.                 // this.hostElement.style.display = 'none';
  4792.                 const id = (this.data || 0).id || 0;
  4793.                 if (!id) this.data = { id: 1 }
  4794.                 try {
  4795.                   this.requestRemoval();
  4796.                   fastRemoved = true;
  4797.                 } catch (e) {
  4798.  
  4799.                 }
  4800.               }
  4801.  
  4802.               if (!fastRemoved) {
  4803.                 "auto" === this.hostElement.style.width && this.setContainerWidth();
  4804.                 this.slideDown();
  4805.               }
  4806.             }
  4807.  
  4808.  
  4809.  
  4810.           },
  4811.  
  4812.  
  4813.           /** @type {()} */
  4814.           _throwOut: function () {
  4815.             this._r782 = 1;
  4816.             Promise.resolve().then(() => {
  4817.               if (typeof this.requestRemoval === 'function') {
  4818.                 const id = (this.data || 0).id;
  4819.                 if (!id) this.data = { id: 1 };
  4820.                 try {
  4821.                   this.requestRemoval();
  4822.                 } catch (e) { }
  4823.               }
  4824.               this.detached();
  4825.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  4826.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  4827.               if (this.__dataReady === true) this.__dataReady = false;
  4828.               this.data = null;
  4829.               this.countdownMs = 0;
  4830.               this.lastCountdownTimeMs = null;
  4831.               const hm = this.hostElement || this;
  4832.               if (hm.parentNode) hm.remove();
  4833.               for (let t; t = hm.firstChild;) t.remove();
  4834.             }).catch(e => {
  4835.               console.warn(e);
  4836.             });
  4837.           },
  4838.  
  4839.  
  4840.           // doTimerFnModification
  4841.  
  4842.  
  4843.           /** @type {(a, b)} */
  4844.           startCountdownForTimerFnModA: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4845.             try {
  4846.               // a.durationSec [s] => countdownMs [ms]
  4847.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4848.               // lastCountdownTimeMs => raf ongoing
  4849.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4850.  
  4851.               if (this._r782) return;
  4852.  
  4853.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4854.                 this._throwOut();
  4855.                 return;
  4856.               }
  4857.  
  4858.               // TimerFnModA
  4859.  
  4860.               b = void 0 === b ? 0 : b;
  4861.               if (void 0 !== a) {
  4862.  
  4863.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4864.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4865.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4866.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now()
  4867.                   this.rafId = 1
  4868.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4869.                   this.detlaSincePausedSecs = 0;
  4870.                   const ae = this._makeAnimator();
  4871.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4872.  
  4873.                   // if (playerProgressChangedArg1 === null) {
  4874.                   //   console.log('startCountdownForTimerFnModA', this.data)
  4875.                   // }
  4876.  
  4877.                   if (isPlayProgressTriggered && this.isAnimationPaused !== true && this.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__) {
  4878.  
  4879.  
  4880.  
  4881.  
  4882.                     this.playerProgressSec = lastPlayerProgress > 0 ? lastPlayerProgress : 0; // save the progress first
  4883.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4884.                     this.detlaSincePausedSecs = 0;
  4885.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4886.  
  4887.                     relayPromise = relayPromise || new PromiseExternal();
  4888.  
  4889.                     relayPromise.then(() => {
  4890.                       if (this.isAttached === true && this.countdownDurationMs > 0 && this.isAnimationPaused === true && this.isReplayPaused !== true) {
  4891.                         this.isAnimationPaused = false;
  4892.                       }
  4893.                     });
  4894.  
  4895.  
  4896.                   }
  4897.  
  4898.  
  4899.  
  4900.                 }
  4901.               }
  4902.  
  4903.             } catch (e) {
  4904.               console.warn(e);
  4905.             }
  4906.  
  4907.           },
  4908.  
  4909.  
  4910.  
  4911.           /** @type {(a, b)} */
  4912.           startCountdownForTimerFnModT: function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4913.             try {
  4914.               // a.durationSec [s] => countdownMs [ms]
  4915.               // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4916.               // lastCountdownTimeMs => raf ongoing
  4917.               // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4918.  
  4919.               if (this._r782) return;
  4920.  
  4921.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4922.                 this._throwOut();
  4923.                 return;
  4924.               }
  4925.  
  4926.               // TimerFnModT
  4927.  
  4928.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4929.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4930.               b = void 0 === b ? 0 : b;
  4931.               void 0 !== a && (this.countdownMs = 1E3 * a,
  4932.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4933.                 this.ratio = 1,
  4934.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = performance.now(),
  4935.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4936.  
  4937.             } catch (e) {
  4938.               console.warn(e);
  4939.             }
  4940.  
  4941.           },
  4942.  
  4943.  
  4944.           /** @type {(a,)} */
  4945.           updateTimeoutForTimerFnModA: function (a) {
  4946.  
  4947.             try {
  4948.  
  4949.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4950.  
  4951.               if (this._r782) return;
  4952.  
  4953.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4954.                 this._throwOut();
  4955.                 return;
  4956.               }
  4957.  
  4958.               // TimerFnModA
  4959.  
  4960.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4961.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  4962.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4963.               }
  4964.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4965.               if (this.isAttached && this.countdownMs) {
  4966.                 this.lastCountdownTimeMs = a
  4967.                 const ae = this._makeAnimator(); // request raf
  4968.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4969.               } else {
  4970.                 (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  4971.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4972.                     this.slideDown()));
  4973.               }
  4974.  
  4975.             } catch (e) {
  4976.               console.warn(e);
  4977.             }
  4978.  
  4979.  
  4980.           },
  4981.  
  4982.           /** @type {(a,)} */
  4983.           updateTimeoutForTimerFnModT: function (a) {
  4984.  
  4985.             try {
  4986.  
  4987.               // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  4988.  
  4989.               if (this._r782) return;
  4990.  
  4991.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4992.                 this._throwOut();
  4993.                 return;
  4994.               }
  4995.  
  4996.               // TimerFnModT
  4997.  
  4998.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4999.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5000.               if (this.lastCountdownTimeMs !== this._lastCountdownTimeMsX0) {
  5001.                 this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  5002.               }
  5003.               // console.log(703, this.countdownMs)
  5004.               this.ratio = this.countdownMs / this.countdownDurationMs;
  5005.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  5006.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = null,
  5007.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  5008.                     this.slideDown()))
  5009.  
  5010.  
  5011.             } catch (e) {
  5012.               console.warn(e);
  5013.             }
  5014.           },
  5015.  
  5016.           /** @type {(a,b)} */
  5017.           isAnimationPausedChangedForTimerFnModA: function (a, b) {
  5018.  
  5019.             if (this._r782) return;
  5020.  
  5021.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5022.               this._throwOut();
  5023.               return;
  5024.             }
  5025.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  5026.             this._forceNoDetlaSincePausedSecs783 = 0;
  5027.  
  5028.             Promise.resolve().then(() => {
  5029.  
  5030.               if (a) {
  5031.  
  5032.                 if (this._runnerAE && this._runnerAE.playState === 'running') {
  5033.  
  5034.                   this._runnerAE.pause()
  5035.                   let lc = window.performance.now();
  5036.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  5037.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  5038.                   this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = lc;
  5039.                 }
  5040.  
  5041.               } else if (!a && b) {
  5042.  
  5043.  
  5044.                 if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  5045.                 a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  5046.                 this.detlaSincePausedSecs = 0;
  5047.                 this.updateTimeout(a);
  5048.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now();
  5049.  
  5050.               }
  5051.  
  5052.  
  5053.             }).catch(e => {
  5054.               console.log(e);
  5055.             });
  5056.  
  5057.  
  5058.  
  5059.           },
  5060.  
  5061.  
  5062.           /** @type {(a,b)} */
  5063.           isAnimationPausedChangedForTimerFnModT: function (a, b) {
  5064.  
  5065.             if (this._r782) return;
  5066.  
  5067.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5068.               this._throwOut();
  5069.               return;
  5070.             }
  5071.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  5072.             this._forceNoDetlaSincePausedSecs783 = 0;
  5073.  
  5074.             Promise.resolve().then(() => {
  5075.  
  5076.               // TimerFnModT
  5077.  
  5078.               // ez++;
  5079.               // if(ez> 1e9) ez=9;
  5080.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  5081.               a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  5082.                 this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  5083.                   this.detlaSincePausedSecs = 0),
  5084.                 this.boundUpdateTimeout37_(a),
  5085.                 this.lastCountdownTimeMs = this._lastCountdownTimeMsX0 = window.performance.now())
  5086.  
  5087.  
  5088.             }).catch(e => {
  5089.               console.log(e);
  5090.             });
  5091.  
  5092.  
  5093.  
  5094.           },
  5095.  
  5096.  
  5097.           /** @type {(a,b)} */
  5098.           computeContainerStyleForAnimatorEnabled: function (a, b) {
  5099.  
  5100.             if (this._r782) return;
  5101.  
  5102.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  5103.               this._throwOut();
  5104.               return;
  5105.             }
  5106.  
  5107.             return (dummyValueForStyleReturn || (dummyValueForStyleReturn = genDummyValueForStyleReturn()));
  5108.  
  5109.           },
  5110.  
  5111.  
  5112.  
  5113.           /** @type {()} */
  5114.           handlePauseReplayForPlaybackProgressState: function () {
  5115.             if (!playerEventsByIframeRelay) return this.handlePauseReplay66.apply(this, arguments);
  5116.  
  5117.             if (onPlayStateChangePromise) {
  5118.  
  5119.               if (this.rtu > 1e9) this.rtu = this.rtu % 1e4;
  5120.               const tid = ++this.rtu;
  5121.  
  5122.               onPlayStateChangePromise.then(() => {
  5123.                 if (tid === this.rtu && !onPlayStateChangePromise) this.handlePauseReplay.apply(this, arguments);
  5124.               });
  5125.  
  5126.               return;
  5127.             }
  5128.  
  5129.             if (playerState !== 2) return;
  5130.             if (this.isAttached) {
  5131.               if (this.rtk > 1e9) this.rtk = this.rtk % 1e4;
  5132.               const tid = ++this.rtk;
  5133.               const tc = relayCount;
  5134.               foregroundPromiseFn().then(() => {
  5135.                 if (tid === this.rtk && tc === relayCount && playerState === 2 && _playerState === playerState) {
  5136.                   this.handlePauseReplay66();
  5137.                 }
  5138.  
  5139.               })
  5140.             }
  5141.           },
  5142.  
  5143.           /** @type {()} */
  5144.           handleResumeReplayForPlaybackProgressState: function () {
  5145.             if (!playerEventsByIframeRelay) return this.handleResumeReplay66.apply(this, arguments);
  5146.  
  5147.  
  5148.             if (onPlayStateChangePromise) {
  5149.  
  5150.               if (this.rtv > 1e9) this.rtv = this.rtv % 1e4;
  5151.               const tid = ++this.rtv;
  5152.  
  5153.               onPlayStateChangePromise.then(() => {
  5154.                 if (tid === this.rtv && !onPlayStateChangePromise) this.handleResumeReplay.apply(this, arguments);
  5155.               });
  5156.  
  5157.               return;
  5158.             }
  5159.  
  5160.  
  5161.             if (playerState !== 1) return;
  5162.             if (this.isAttached) {
  5163.               const tc = relayCount;
  5164.  
  5165.               relayPromise = relayPromise || new PromiseExternal();
  5166.               relayPromise.then(() => {
  5167.                 if (relayCount > tc && playerState === 1 && _playerState === playerState) {
  5168.                   this.handleResumeReplay66();
  5169.                 }
  5170.               });
  5171.             }
  5172.           },
  5173.  
  5174.           /** @type {(a,)} */
  5175.           handleReplayProgressForPlaybackProgressState: function (a) {
  5176.             if (this.isAttached) {
  5177.               const tid = ++this.rtk;
  5178.               foregroundPromiseFn().then(() => {
  5179.                 if (tid === this.rtk) {
  5180.                   this.handleReplayProgress66(a);
  5181.                 }
  5182.               })
  5183.             }
  5184.           }
  5185.  
  5186.  
  5187.         }
  5188.  
  5189.  
  5190.         for (const tag of tags) { // ##tag##
  5191.           const dummy = document.createElement(tag);
  5192.  
  5193.           const cProto = getProto(dummy);
  5194.           if (!cProto || !cProto.attached) {
  5195.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5196.             continue;
  5197.           }
  5198.  
  5199.           cProto.attached77 = cProto.attached;
  5200.  
  5201.           cProto.attached = dProto.attachedForTickerInit;
  5202.  
  5203.           let rafHackState = 0;
  5204.  
  5205.           let isTimingFunctionHackable = false;
  5206.  
  5207.           let urt = 0;
  5208.  
  5209.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  5210.  
  5211.             // console.log('startCountdown', typeof cProto.startCountdown)
  5212.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  5213.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  5214.  
  5215.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  5216.  
  5217.           } else {
  5218.             console.log(`Skip Timing Function Modification for ${tag}`);
  5219.             continue;
  5220.           }
  5221.  
  5222.  
  5223.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  5224.  
  5225.             // cancelable - this.rafId < isAnimationPausedChanged >
  5226.             rafHackState = 1;
  5227.  
  5228.             if (isTimingFunctionHackable) {
  5229.               rafHackState = 2;
  5230.  
  5231.             } else {
  5232.               rafHackState = 4;
  5233.             }
  5234.  
  5235.           }
  5236.  
  5237.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  5238.  
  5239.           const doRAFHack = rafHackState === 2;
  5240.  
  5241.           cProto._throwOut = dProto._throwOut;
  5242.  
  5243.           cProto._makeAnimator = doAnimator ? dProto._makeAnimator : null;
  5244.  
  5245.           cProto._aeFinished = doAnimator ? dProto._aeFinished : null;
  5246.  
  5247.  
  5248.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  5249.  
  5250.  
  5251.  
  5252.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  5253.               urt++;
  5254.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  5255.             } else {
  5256.               console.log('Error for setting cProto.handlePauseReplay', tag)
  5257.             }
  5258.  
  5259.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  5260.               urt++;
  5261.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  5262.             } else {
  5263.               console.log('Error for setting cProto.handleResumeReplay', tag)
  5264.             }
  5265.  
  5266.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  5267.               urt++;
  5268.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  5269.             } else {
  5270.               console.log('Error for setting cProto.handleReplayProgress', tag)
  5271.             }
  5272.  
  5273.  
  5274.  
  5275.           }
  5276.  
  5277.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  5278.           cProto.__ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED__ = ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED;
  5279.  
  5280.           if (ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED) {
  5281.  
  5282.             cProto.rtk = 0;
  5283.             cProto.rtu = 0;
  5284.             cProto.rtv = 0;
  5285.  
  5286.             cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  5287.             cProto.handlePauseReplay = dProto.handlePauseReplayForPlaybackProgressState;
  5288.  
  5289.             cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  5290.             cProto.handleResumeReplay = dProto.handleResumeReplayForPlaybackProgressState;
  5291.  
  5292.             cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  5293.             cProto.handleReplayProgress = dProto.handleReplayProgressForPlaybackProgressState;
  5294.  
  5295.           }
  5296.  
  5297.           const doTimerFnModification = (doRAFHack || doAnimator);
  5298.  
  5299.           if (doAnimator && windowShownAt < 0) {
  5300.             windowShownAt = 0;
  5301.             setupEventForWindowShownAt();
  5302.           }
  5303.  
  5304.           if (doTimerFnModification) {
  5305.  
  5306.             cProto.startCountdown = (
  5307.               doAnimator ? dProto.startCountdownForTimerFnModA : dProto.startCountdownForTimerFnModT
  5308.             );
  5309.  
  5310.             // _lastCountdownTimeMsX0 is required since performance.now() is not fully the same with rAF timestamp
  5311.             cProto.updateTimeout = (
  5312.               doAnimator ? dProto.updateTimeoutForTimerFnModA : dProto.updateTimeoutForTimerFnModT
  5313.             );
  5314.  
  5315.  
  5316.             // let ez = 0;
  5317.             cProto.isAnimationPausedChanged = (
  5318.               doAnimator ? dProto.isAnimationPausedChangedForTimerFnModA : dProto.isAnimationPausedChangedForTimerFnModT
  5319.             );
  5320.  
  5321.           }
  5322.  
  5323.           if (doAnimator) {
  5324.  
  5325.             const s = fnIntegrity(cProto.computeContainerStyle);
  5326.             // 2.44.29 or 2.81.31
  5327.             if (s === '2.44.29' || s === '2.81.31') {
  5328.  
  5329.               //     var ofb = da([""])
  5330.               //         pfb = da("background:linear-gradient(90deg, {,{ {,{ {,{);".split("{"))
  5331.  
  5332.               // f.computeContainerStyle = function(a, b) {
  5333.               //     if (!a)
  5334.               //         return pi(ofb);
  5335.               //     var c = this.colorFromDecimal(a.startBackgroundColor);
  5336.               //     a = this.colorFromDecimal(a.endBackgroundColor);
  5337.               //     b = 100 * b + "%";
  5338.               //     return pi(pfb, c, c, b, a, b, a)
  5339.               // }
  5340.  
  5341.             } else {
  5342.               assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.44.29'));
  5343.             }
  5344.  
  5345.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  5346.  
  5347.             cProto.computeContainerStyle = dProto.computeContainerStyleForAnimatorEnabled;
  5348.  
  5349.           }
  5350.  
  5351.           if (doTimerFnModification === true) hasTimerModified = true;
  5352.  
  5353.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  5354.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  5355.           }
  5356.  
  5357.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  5358.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  5359.           }
  5360.  
  5361.         }
  5362.  
  5363.         const selector = tags.join(', ');
  5364.         const elements = document.querySelectorAll(selector);
  5365.         if (elements.length >= 1) {
  5366.           for (const elm of elements) {
  5367.             if (insp(elm).isAttached === true) {
  5368.               fpTicker(elm);
  5369.             }
  5370.           }
  5371.         }
  5372.  
  5373.         console.log("[End]");
  5374.         console.groupEnd();
  5375.  
  5376.  
  5377.       }).catch(console.warn);
  5378.  
  5379.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  5380.  
  5381.         mightFirstCheckOnYtInit();
  5382.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  5383.         console.log("[Begin]");
  5384.         (() => {
  5385.  
  5386.           /* pending!!
  5387.  
  5388.           handleLiveChatAction
  5389.  
  5390.           removeTickerItemById
  5391.  
  5392.           _itemsChanged
  5393.           itemsChanged
  5394.  
  5395.           handleMarkChatItemAsDeletedAction
  5396.           handleMarkChatItemsByAuthorAsDeletedAction
  5397.           handleRemoveChatItemByAuthorAction
  5398.  
  5399.  
  5400.           */
  5401.  
  5402.           const tag = "yt-live-chat-ticker-renderer"
  5403.           const dummy = document.createElement(tag);
  5404.  
  5405.           const cProto = getProto(dummy);
  5406.           if (!cProto || !cProto.attached) {
  5407.             console.warn(`proto.attached for ${tag} is unavailable.`);
  5408.             return;
  5409.           }
  5410.  
  5411.           if (AMEND_TICKER_handleLiveChatAction
  5412.             && typeof cProto.handleLiveChatAction === 'function' && !cProto.handleLiveChatAction45 && '|1.63.48|1.64.48|'.includes(`|${fnIntegrity(cProto.handleLiveChatAction)}|`)
  5413.             && typeof cProto.handleLiveChatActions === 'function' && !cProto.handleLiveChatActions45 && fnIntegrity(cProto.handleLiveChatActions) === '1.23.12'
  5414.             && typeof cProto.unshift === 'function' && cProto.unshift.length === 1
  5415.             && typeof cProto.handleMarkChatItemAsDeletedAction === 'function' && cProto.handleMarkChatItemAsDeletedAction.length === 1
  5416.             && typeof cProto.removeTickerItemById === 'function' && cProto.removeTickerItemById.length === 1
  5417.             && typeof cProto.handleMarkChatItemsByAuthorAsDeletedAction === 'function' && cProto.handleMarkChatItemsByAuthorAsDeletedAction.length === 1
  5418.             && typeof cProto.handleRemoveChatItemByAuthorAction === 'function' && cProto.handleRemoveChatItemByAuthorAction.length === 1
  5419.           ) {
  5420.  
  5421.             cProto.handleLiveChatActions45 = cProto.handleLiveChatActions;
  5422.  
  5423.             cProto.handleLiveChatActions = function (a) {
  5424.               /**
  5425.                *
  5426.                   f.handleLiveChatActions = function(a) {
  5427.                       a.length && (a.forEach(this.handleLiveChatAction, this),
  5428.                       this.updateHighlightedItem(),
  5429.                       this.shouldAnimateIn = !0)
  5430.                   }
  5431.                *
  5432.                */
  5433.  
  5434.               if (a.length) {
  5435.                 const batchToken = String.fromCharCode(Date.now() % 26 + 97) + Math.floor(Math.random() * 19861 + 19861).toString(36);
  5436.                 const len = a.length;
  5437.                 if (FIX_BATCH_TICKER_ORDER && len >= 2) {
  5438.                   // Primarily for the initial batch, this is due to replayBuffer._back.
  5439.                   const entries = [];
  5440.                   const entriesI = [];
  5441.                   for (let i = 0; i < len; i++) {
  5442.                     const item = ((a[i] || 0).addLiveChatTickerItemAction || 0).item || 0;
  5443.                     if (item) {
  5444.                       const itemRendererKey = firstObjectKey(item);
  5445.                       const itemRenderer = item[itemRendererKey];
  5446.                       if (itemRenderer) {
  5447.                         let timestampUsec = getTimestampUsec(itemRenderer);
  5448.                         if (timestampUsec !== null) {
  5449.                           timestampUsec = parseInt(timestampUsec);
  5450.                           if (timestampUsec > 0) {
  5451.                             entriesI.push(i);
  5452.                             entries.push({ e: a[i], timestampUsec })
  5453.                           }
  5454.                         }
  5455.                       }
  5456.                     }
  5457.                   }
  5458.                   const mLen = entries.length;
  5459.                   if (mLen >= 2) {
  5460.                     entries.sort((a, b) => {
  5461.                       const diff = a.timestampUsec - b.timestampUsec;
  5462.                       return diff > 0.1 ? 1 : diff < -0.1 ? -1 : 0;
  5463.                     });
  5464.                     for (let j = 0; j < mLen; j++) {
  5465.                       const i = entriesI[j];
  5466.                       a[i] = entries[j].e;
  5467.                     }
  5468.                   }
  5469.                   entries.length = 0;
  5470.                   entriesI.length = 0;
  5471.                 }
  5472.                 for (const action of a) {
  5473.                   action.__batchId45__ = batchToken;
  5474.                   this.handleLiveChatAction(action);
  5475.                 }
  5476.               }
  5477.             }
  5478.  
  5479.             cProto.handleLiveChatAction45 = cProto.handleLiveChatAction;
  5480.  
  5481.  
  5482.  
  5483.             cProto._nszlv_ = 0;
  5484.             cProto._stackedLCAs_ = null;
  5485.             cProto._lastAddItem_ = null;
  5486.             cProto._lastAddItemInStack_ = false;
  5487.             cProto.handleLiveChatAction = function (a) {
  5488.  
  5489.  
  5490.               /**
  5491.                *
  5492.                *
  5493.                 f.handleLiveChatAction = function(a) {
  5494.                     var b = C(a, xO)
  5495.                       , c = C(a, yO)
  5496.                       , d = C(a, o1a)
  5497.                       , e = C(a, p1a);
  5498.                     a = C(a, A1a);
  5499.                     b ? this.unshift("items", b.item) : c ? this.handleMarkChatItemAsDeletedAction(c) : d ? this.removeTickerItemById(d.targetItemId) : e ? this.handleMarkChatItemsByAuthorAsDeletedAction(e) : a && this.handleRemoveChatItemByAuthorAction(a)
  5500.                 }
  5501.                *
  5502.                */
  5503.  
  5504.               // return this.handleLiveChatAction45(a)
  5505.               const { addChatItemAction, addLiveChatTickerItemAction, markChatItemAsDeletedAction,
  5506.                 removeChatItemAction, markChatItemsByAuthorAsDeletedAction, removeChatItemByAuthorAction, __batchId45__ } = a
  5507.  
  5508.               if (addChatItemAction) return;
  5509.  
  5510.  
  5511.               const d = Date.now();
  5512.  
  5513.  
  5514.               // console.log(Object.keys(a));
  5515.  
  5516.               if (this._stackedLCAs_ === null) this._stackedLCAs_ = [];
  5517.               const stackArr = this._stackedLCAs_;
  5518.               let newStackEntry = null;
  5519.               if (addLiveChatTickerItemAction) {
  5520.                 let isDuplicated = false;
  5521.  
  5522.                 const newItem = addLiveChatTickerItemAction.item;
  5523.                 const tickerType = firstObjectKey(newItem);
  5524.                 if (!tickerType) return;
  5525.                 const tickerItem = newItem[tickerType];
  5526.                 const tickerId = tickerItem.id;
  5527.                 if (!tickerId) return;
  5528.  
  5529.                 if (this._lastAddItem_ && this._lastAddItem_.id === tickerId) {
  5530.                   let prevTickerItem = null;
  5531.                   if (this._lastAddItemInStack_) {
  5532.                     const entry = stackArr[stackArr.length - 1]; // only consider the last entry
  5533.                     if (entry && entry.action === 'addItem') {
  5534.                       prevTickerItem = entry.data; // only consider the first item;
  5535.                     }
  5536.                   } else {
  5537.                     prevTickerItem = this.items[0]; // only consider the first item;
  5538.                   }
  5539.                   if (prevTickerItem && prevTickerItem[tickerType]) {
  5540.                     if (prevTickerItem[tickerType].id === tickerId) {
  5541.                       isDuplicated = true;
  5542.                     }
  5543.                   }
  5544.                 }
  5545.                 if (!isDuplicated) {
  5546.                   this._lastAddItem_ = tickerItem;
  5547.                   this._lastAddItemInStack_ = true;
  5548.                   // console.log('newItem', newItem)
  5549.  
  5550.                   const item = newItem;
  5551.                   const key = firstObjectKey(item);
  5552.                   if (key) {
  5553.                     const itemRenderer = item[key] || 0;
  5554.                     if (itemRenderer.fullDurationSec > 0) {
  5555.                       itemRenderer.__actionAt__ = d;
  5556.                     }
  5557.                   }
  5558.  
  5559.  
  5560.                   newStackEntry = { action: 'addItem', data: newItem };
  5561.  
  5562.                 } else {
  5563.                   console.log('handleLiveChatAction Repeated Item', tickerItem.id, tickerItem); // happen in both live and playback. Reason Unknown.
  5564.                   return;
  5565.                 }
  5566.  
  5567.               } else {
  5568.                 markChatItemAsDeletedAction && (newStackEntry = { action: 'mcItemD', data: markChatItemAsDeletedAction });
  5569.                 removeChatItemAction && (newStackEntry = { action: 'removeItemById', data: removeChatItemAction.targetId });
  5570.                 markChatItemsByAuthorAsDeletedAction && (newStackEntry = { action: 'mcItemAD', data: markChatItemsByAuthorAsDeletedAction });
  5571.                 removeChatItemByAuthorAction && (newStackEntry = { action: 'removeItemA', data: removeChatItemByAuthorAction })
  5572.               }
  5573.  
  5574.  
  5575.               if (!newStackEntry) return;
  5576.               stackArr.push(newStackEntry);
  5577.  
  5578.  
  5579.               this._nszlv_++;
  5580.               if (this._nszlv_ > 1e9) this._nszlv_ = 9;
  5581.               const tid = this._nszlv_;
  5582.  
  5583.               newStackEntry.__batchId45__ = __batchId45__ || '';
  5584.               newStackEntry.dateTime = Date.now();
  5585.  
  5586.  
  5587.               foregroundPromiseFn().then(() => {
  5588.  
  5589.                 if (tid !== this._nszlv_) return;
  5590.                 const dateNow = Date.now(); // time difference to shift animation start time shall be considered. (pending)
  5591.                 const stackArr = this._stackedLCAs_.slice(0);
  5592.                 this._stackedLCAs_.length = 0;
  5593.                 this._lastAddItemInStack_ = false;
  5594.                 let lastDateTime = 0;
  5595.                 let prevBatchId = '';
  5596.                 const addItems = [];
  5597.                 // const previousShouldAnimateIn = this.shouldAnimateIn;
  5598.  
  5599.                 const addItemsFx = () => {
  5600.  
  5601.                   if (addItems.length >= 1) {
  5602.                     const eArr = addItems.slice(0);
  5603.                     addItems.length = 0;
  5604.                     if (ADJUST_TICKER_DURATION_ALIGN_RENDER_TIME) {
  5605.  
  5606.                       const arr = []; // size of arr <= size of eArr
  5607.                       const d = Date.now();
  5608.                       for (const item of eArr) {
  5609.                         const key = firstObjectKey(item);
  5610.                         if (key) {
  5611.  
  5612.  
  5613.                           const itemRenderer = item[key] || 0;
  5614.                           const { durationSec, fullDurationSec, __actionAt__ } = itemRenderer;
  5615.                           if (__actionAt__ > 0 && durationSec > 0 && fullDurationSec > 0) {
  5616.  
  5617.  
  5618.                             const offset = d - __actionAt__;
  5619.                             if (offset > 0 && typeof durationSec === 'number' && typeof fullDurationSec === 'number' && fullDurationSec >= durationSec) {
  5620.                               const adjustedDurationSec = durationSec - Math.floor(offset / 1000);
  5621.                               if (adjustedDurationSec < durationSec) { // prevent NaN
  5622.                                 // console.log('adjustedDurationSec', adjustedDurationSec);
  5623.                                 if (adjustedDurationSec > 0) {
  5624.                                   // console.log('offset Sec', Math.floor(offset / 1000));
  5625.                                   itemRenderer.durationSec = adjustedDurationSec;
  5626.                                 } else {
  5627.                                   // if adjustedDurationSec equal 0 or invalid
  5628.                                   continue; // skip adding
  5629.                                 }
  5630.                               }
  5631.  
  5632.                             }
  5633.  
  5634.                           }
  5635.  
  5636.                           if (fullDurationSec > 0 && durationSec < 1) continue; // fallback check
  5637.  
  5638.  
  5639.  
  5640.                         }
  5641.                         arr.push(item)
  5642.                         // arr.unshift(item);
  5643.                       }
  5644.  
  5645.  
  5646.                       // console.log(arr.slice(0))
  5647.                       this.unshift("items", ...arr);
  5648.                     } else {
  5649.                       this.unshift("items", ...eArr);
  5650.                     }
  5651.                   }
  5652.                 }
  5653.  
  5654.                 for (const entry of stackArr) {
  5655.  
  5656.                   const { action, data, dateTime, __batchId45__ } = entry;
  5657.  
  5658.                   const finishLastAction = (
  5659.                     (prevBatchId !== __batchId45__ && prevBatchId)
  5660.                     || (dateNow - lastDateTime >= 1000 && dateNow - dateTime < 1000)
  5661.                   );
  5662.  
  5663.                   const addPrevItems = addItems.length >= 1 && (finishLastAction || action !== 'addItem');
  5664.                   lastDateTime = dateTime;
  5665.                   prevBatchId = __batchId45__;
  5666.  
  5667.                   // if (dateNow - dateTime >= 1000 && this.shouldAnimateIn) this.shouldAnimateIn = false;
  5668.  
  5669.  
  5670.                   if (addPrevItems) {
  5671.                     addItemsFx();
  5672.                   }
  5673.                   // if (finishLastAction) {
  5674.                   //   this.updateHighlightedItem();
  5675.                   //   if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5676.                   // }
  5677.  
  5678.  
  5679.                   if (action === 'addItem') addItems.unshift(data);
  5680.                   else if (action === 'mcItemD') this.handleMarkChatItemAsDeletedAction(data);
  5681.                   else if (action === 'removeItemById') this.removeTickerItemById(data);
  5682.                   else if (action === 'mcItemAD') this.handleMarkChatItemsByAuthorAsDeletedAction(data);
  5683.                   else if (action === 'removeItemA') this.handleRemoveChatItemByAuthorAction(data);
  5684.  
  5685.                 }
  5686.  
  5687.  
  5688.                 // if (previousShouldAnimateIn && !this.shouldAnimateIn) this.shouldAnimateIn = true;
  5689.  
  5690.                 addItemsFx();
  5691.  
  5692.                 // if (prevBatchId || dateNow - lastDateTime >= 1000) {
  5693.                 //   this.updateHighlightedItem();
  5694.                 //   if (!this.shouldAnimateIn) this.shouldAnimateIn = true;
  5695.                 // }
  5696.  
  5697.               })
  5698.  
  5699.             }
  5700.  
  5701.             console.log("AMEND_TICKER_handleLiveChatAction - OK");
  5702.           } else {
  5703.             console.log("AMEND_TICKER_handleLiveChatAction - NG");
  5704.           }
  5705.  
  5706.           if (RAF_FIX_keepScrollClamped) {
  5707.  
  5708.             // to be improved
  5709.  
  5710.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  5711.  
  5712.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  5713.               cProto.keepScrollClamped = function () {
  5714.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  5715.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  5716.                 this.maybeClampScroll()
  5717.               }
  5718.  
  5719.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  5720.             } else {
  5721.  
  5722.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  5723.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  5724.             }
  5725.  
  5726.           }
  5727.  
  5728.  
  5729.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.43.31' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  5730.             // to be replaced by animator
  5731.  
  5732.             cProto.startScrolling = function (a) {
  5733.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  5734.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  5735.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  5736.               this.scrollRatePixelsPerSecond = a;
  5737.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5738.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  5739.             };
  5740.  
  5741.             // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  5742.  
  5743.             cProto.scrollIncrementally = (RAF_FIX_scrollIncrementally === 2) ? function (a) {
  5744.               const b = a - (this.lastFrameTimestamp || 0);
  5745.               const rate = this.scrollRatePixelsPerSecond
  5746.               const q = b / 1E3 * (rate || 0);
  5747.  
  5748.               const sl = this.$.items.scrollLeft;
  5749.               // console.log(rate, sl, q)
  5750.               if (this.lastFrameTimestamp == this.scrollStartTime) {
  5751.  
  5752.               } else if (q > -1e-5 && q < 1e-5) {
  5753.  
  5754.               } else {
  5755.                 let cond1 = sl > 0 && rate > 0 && q > 0;
  5756.                 let cond2 = sl > 0 && rate < 0 && q < 0;
  5757.                 let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  5758.                 if (cond1 || cond2 || cond3) {
  5759.                   this.$.items.scrollLeft += q;
  5760.                   this.maybeClampScroll();
  5761.                   this.updateArrows();
  5762.                 }
  5763.               }
  5764.  
  5765.               this.lastFrameTimestamp = a;
  5766.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5767.               0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5768.             } : function (a) {
  5769.               const b = a - (this.lastFrameTimestamp || 0);
  5770.               this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  5771.               this.maybeClampScroll();
  5772.               this.updateArrows();
  5773.               this.lastFrameTimestamp = a;
  5774.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  5775.               0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  5776.             };
  5777.  
  5778.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  5779.           } else {
  5780.             assertor(() => fnIntegrity(cProto.startScrolling, '1.43.31'));
  5781.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  5782.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  5783.           }
  5784.  
  5785.  
  5786.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  5787.  
  5788.             cProto.attached37 = cProto.attached;
  5789.             cProto.detached37 = cProto.detached;
  5790.  
  5791.             let naohzId = 0;
  5792.             cProto.__naohzId__ = 0;
  5793.             cProto.attached = function () {
  5794.               Promise.resolve().then(() => {
  5795.  
  5796.                 const hostElement = this.hostElement || this;
  5797.                 if (!(hostElement instanceof HTMLElement)) return;
  5798.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  5799.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  5800.                 // or #chat-messages
  5801.                 if (!ironPage) return;
  5802.  
  5803.                 if (this.__naohzId__) removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5804.                 if (naohzId > 1e9) naohzId = naohzId % 1e4;
  5805.                 this.__naohzId__ = ++naohzId;
  5806.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  5807.  
  5808.                 addEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5809.  
  5810.               });
  5811.               return this.attached37.apply(this, arguments);
  5812.             };
  5813.             cProto.detached = function () {
  5814.               Promise.resolve().then(() => {
  5815.  
  5816.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  5817.                 if (!ironPage) return;
  5818.  
  5819.                 removeEventListener.call(ironPage, 'click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  5820.  
  5821.               });
  5822.               return this.detached37.apply(this, arguments);
  5823.             };
  5824.  
  5825.             const clickFade = (u) => {
  5826.               u.click();
  5827.             };
  5828.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  5829.  
  5830.               const target = (evt || 0).target || 0;
  5831.               if (!target) return;
  5832.  
  5833.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  5834.                 const is = p.is;
  5835.                 if (typeof is === 'string' && is) {
  5836.  
  5837.                   if (is === 'yt-live-chat-pinned-message-renderer') {
  5838.                     return;
  5839.                   }
  5840.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  5841.                     const fade = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  5842.                     if (fade) {
  5843.                       Promise.resolve(fade).then(clickFade);
  5844.                       evt && evt.stopPropagation();
  5845.                     }
  5846.                     return;
  5847.                   }
  5848.                   if (is !== 'yt-live-chat-ticker-renderer') {
  5849.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  5850.                     if (!is.endsWith('-renderer')) return;
  5851.                   }
  5852.  
  5853.                 } else {
  5854.                   if ((p.nodeName || '').includes('BUTTON')) return;
  5855.                 }
  5856.  
  5857.               }
  5858.             };
  5859.  
  5860.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  5861.  
  5862.           } else {
  5863.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  5864.           }
  5865.  
  5866.  
  5867.         })();
  5868.  
  5869.         console.log("[End]");
  5870.  
  5871.         console.groupEnd();
  5872.  
  5873.       }).catch(console.warn);
  5874.  
  5875.  
  5876.  
  5877.       if (ENABLE_RAF_HACK_INPUT_RENDERER || DELAY_FOCUSEDCHANGED) {
  5878.  
  5879.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  5880.  
  5881.           mightFirstCheckOnYtInit();
  5882.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  5883.           console.log("[Begin]");
  5884.           (() => {
  5885.  
  5886.  
  5887.  
  5888.             const tag = "yt-live-chat-message-input-renderer"
  5889.             const dummy = document.createElement(tag);
  5890.  
  5891.             const cProto = getProto(dummy);
  5892.             if (!cProto || !cProto.attached) {
  5893.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5894.               return;
  5895.             }
  5896.  
  5897.  
  5898.             if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  5899.  
  5900.               let doHack = false;
  5901.               if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  5902.  
  5903.                 // not cancellable
  5904.  
  5905.  
  5906.                 doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  5907.  
  5908.               }
  5909.  
  5910.               if (doHack) {
  5911.  
  5912.                 cProto.handleTimeout = function (a) {
  5913.                   console.log('cProto.handleTimeout', tag)
  5914.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5915.                   this.timeoutDurationMs = this.timeoutMs = a;
  5916.                   this.countdownRatio = 1;
  5917.                   0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  5918.                 };
  5919.                 cProto.updateTimeout = function (a) {
  5920.                   console.log('cProto.updateTimeout', tag)
  5921.                   if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  5922.                   this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  5923.                     this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  5924.                   this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  5925.                     rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  5926.                 };
  5927.  
  5928.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  5929.               } else {
  5930.  
  5931.                 console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  5932.                 console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  5933.  
  5934.                 console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  5935.               }
  5936.  
  5937.  
  5938.             }
  5939.  
  5940.             if (DELAY_FOCUSEDCHANGED && typeof cProto.onFocusedChanged === 'function' && cProto.onFocusedChanged.length === 1 && !cProto.onFocusedChanged372) {
  5941.               cProto.onFocusedChanged372 = cProto.onFocusedChanged;
  5942.               cProto.onFocusedChanged = function (a) {
  5943.                 Promise.resolve().then(() => {
  5944.                   if (this.isAttached === true) this.onFocusedChanged372(a);
  5945.                 }).catch(console.warn);
  5946.               }
  5947.             }
  5948.  
  5949.           })();
  5950.  
  5951.           console.log("[End]");
  5952.  
  5953.           console.groupEnd();
  5954.  
  5955.  
  5956.         })
  5957.  
  5958.       }
  5959.  
  5960.  
  5961.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  5962.  
  5963.  
  5964.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  5965.  
  5966.           mightFirstCheckOnYtInit();
  5967.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  5968.           console.log("[Begin]");
  5969.           (() => {
  5970.  
  5971.             const tag = "yt-emoji-picker-renderer"
  5972.             const dummy = document.createElement(tag);
  5973.  
  5974.             const cProto = getProto(dummy);
  5975.             if (!cProto || !cProto.attached) {
  5976.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5977.               return;
  5978.             }
  5979.  
  5980.             let doHack = false;
  5981.             if (typeof cProto.animateScroll_ === 'function') {
  5982.  
  5983.               // not cancellable
  5984.               console.log('animateScroll_', typeof cProto.animateScroll_)
  5985.  
  5986.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  5987.  
  5988.             }
  5989.  
  5990.             if (doHack) {
  5991.  
  5992.               const querySelector = HTMLElement.prototype.querySelector;
  5993.               const U = (element) => ({
  5994.                 querySelector: (selector) => querySelector.call(element, selector)
  5995.               });
  5996.  
  5997.               cProto.animateScroll_ = function (a) {
  5998.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  5999.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  6000.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  6001.                 a -= this.lastAnimationTime_;
  6002.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  6003.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  6004.                     this.animationEnd_ = this.animationStart_ = null,
  6005.                     this.lastAnimationTime_ = 0);
  6006.                 this.updateButtons_()
  6007.               }
  6008.  
  6009.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  6010.             } else {
  6011.  
  6012.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  6013.             }
  6014.  
  6015.           })();
  6016.  
  6017.           console.log("[End]");
  6018.  
  6019.           console.groupEnd();
  6020.         });
  6021.       }
  6022.  
  6023.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  6024.  
  6025.  
  6026.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  6027.  
  6028.           mightFirstCheckOnYtInit();
  6029.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  6030.           console.log("[Begin]");
  6031.           (() => {
  6032.  
  6033.             const tag = "yt-live-chat-docked-message"
  6034.             const dummy = document.createElement(tag);
  6035.  
  6036.             const cProto = getProto(dummy);
  6037.             if (!cProto || !cProto.attached) {
  6038.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6039.               return;
  6040.             }
  6041.  
  6042.             let doHack = false;
  6043.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  6044.  
  6045.               // cancelable - this.intersectRAF <detached>
  6046.               // yt-live-chat-docked-message
  6047.               // boundCheckIntersections <-> checkIntersections
  6048.               // onDockableMessagesChanged
  6049.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  6050.  
  6051.               console.log('detached', typeof cProto.detached)
  6052.               console.log('checkIntersections', typeof cProto.checkIntersections)
  6053.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  6054.  
  6055.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  6056.  
  6057.             }
  6058.  
  6059.             if (doHack) {
  6060.  
  6061.               cProto.checkIntersections = function () {
  6062.                 // console.log('cProto.checkIntersections', tag)
  6063.                 if (this.dockableMessages.length) {
  6064.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  6065.                   let a = this.dockableMessages[0]
  6066.                     , b = this.hostElement.getBoundingClientRect();
  6067.                   a = a.getBoundingClientRect();
  6068.                   let c = a.top - b.top
  6069.                     , d = 8 >= c;
  6070.                   c = 8 >= c - this.hostElement.clientHeight;
  6071.                   if (d) {
  6072.                     let e;
  6073.                     for (; d;) {
  6074.                       e = this.dockableMessages.shift();
  6075.                       d = this.dockableMessages[0];
  6076.                       if (!d)
  6077.                         break;
  6078.                       d = d.getBoundingClientRect();
  6079.                       c = d.top - b.top;
  6080.                       let f = 8 >= c;
  6081.                       if (8 >= c - a.height)
  6082.                         if (f)
  6083.                           a = d;
  6084.                         else
  6085.                           return;
  6086.                       d = f
  6087.                     }
  6088.                     this.dock(e)
  6089.                   } else
  6090.                     c && this.dockedItem && this.clear()
  6091.                 } else
  6092.                   this.intersectRAF = 0
  6093.               }
  6094.  
  6095.               cProto.onDockableMessagesChanged = function () {
  6096.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  6097.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  6098.               }
  6099.  
  6100.               cProto.detached = function () {
  6101.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  6102.               }
  6103.  
  6104.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  6105.             } else {
  6106.  
  6107.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  6108.             }
  6109.  
  6110.           })();
  6111.  
  6112.           console.log("[End]");
  6113.  
  6114.           console.groupEnd();
  6115.  
  6116.         }).catch(console.warn);
  6117.  
  6118.       }
  6119.  
  6120.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  6121.  
  6122.  
  6123.         customElements.whenDefined("yt-img-shadow").then(() => {
  6124.  
  6125.           mightFirstCheckOnYtInit();
  6126.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  6127.           console.log("[Begin]");
  6128.           (() => {
  6129.  
  6130.             const tag = "yt-img-shadow"
  6131.             const dummy = document.createElement(tag);
  6132.  
  6133.             const cProto = getProto(dummy);
  6134.             if (!cProto || !cProto.attached) {
  6135.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6136.               return;
  6137.             }
  6138.  
  6139.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  6140.  
  6141.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  6142.               cProto.thumbnailChanged_ = function (a) {
  6143.  
  6144.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  6145.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  6146.  
  6147.                 return this.thumbnailChanged66_.apply(this, arguments)
  6148.  
  6149.               }
  6150.               console.log("cProto.thumbnailChanged_ - OK");
  6151.  
  6152.             } else {
  6153.               console.log("cProto.thumbnailChanged_ - NG");
  6154.  
  6155.             }
  6156.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  6157.  
  6158.               cProto.setSrc66_ = cProto.setSrc_;
  6159.               cProto.setSrc_ = function (a) {
  6160.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  6161.                 return this.setSrc66_.apply(this, arguments)
  6162.               }
  6163.  
  6164.               console.log("cProto.setSrc_ - OK");
  6165.             } else {
  6166.  
  6167.               console.log("cProto.setSrc_ - NG");
  6168.             }
  6169.  
  6170.           })();
  6171.  
  6172.           console.log("[End]");
  6173.  
  6174.           console.groupEnd();
  6175.  
  6176.         }).catch(console.warn);
  6177.  
  6178.       }
  6179.  
  6180.       if (FIX_THUMBNAIL_DATACHANGED) {
  6181.  
  6182.  
  6183.  
  6184.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  6185.  
  6186.           mightFirstCheckOnYtInit();
  6187.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  6188.           console.log("[Begin]");
  6189.           (() => {
  6190.  
  6191.             const tag = "yt-live-chat-author-badge-renderer"
  6192.             const dummy = document.createElement(tag);
  6193.  
  6194.             const cProto = getProto(dummy);
  6195.             if (!cProto || !cProto.attached) {
  6196.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6197.               return;
  6198.             }
  6199.  
  6200.  
  6201.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && '|1.160.97|1.159.97|'.includes(`|${fnIntegrity(cProto.dataChanged)}|`)) {
  6202.  
  6203.  
  6204.  
  6205.               cProto.dataChanged86 = cProto.dataChanged;
  6206.               cProto.dataChanged = function (a) {
  6207.  
  6208.                 /*
  6209.  
  6210.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  6211.                       b.removeChild(b.firstChild);
  6212.                   if (a)
  6213.                       if (a.icon) {
  6214.                           var c = document.createElement("yt-icon");
  6215.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  6216.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  6217.                           b.appendChild(c)
  6218.                       } else if (a.customThumbnail) {
  6219.                           c = document.createElement("img");
  6220.                           var d;
  6221.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6222.                           b.appendChild(c),
  6223.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  6224.                       }
  6225.  
  6226.                 */
  6227.  
  6228.                 const image = ((this || 0).$ || 0).image
  6229.                 if (image && a && image.firstElementChild) {
  6230.                   let exisiting = image.firstElementChild;
  6231.                   if (exisiting === image.lastElementChild) {
  6232.  
  6233.  
  6234.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  6235.  
  6236.                       let c = exisiting;
  6237.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  6238.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  6239.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  6240.                       } else {
  6241.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  6242.                         if (c.icon !== p) c.icon = p;
  6243.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  6244.                       }
  6245.                       return;
  6246.  
  6247.  
  6248.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  6249.  
  6250.                       let c = exisiting;
  6251.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  6252.  
  6253.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  6254.                         return;
  6255.                       }
  6256.                       /*
  6257.  
  6258.                       var d;
  6259.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  6260.  
  6261.  
  6262.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  6263.                         */
  6264.                     }
  6265.  
  6266.  
  6267.                   }
  6268.                 }
  6269.                 return this.dataChanged86.apply(this, arguments)
  6270.  
  6271.               }
  6272.               console.log("cProto.dataChanged - OK");
  6273.  
  6274.             } else {
  6275.               assertor(() => fnIntegrity(cProto.dataChanged, '1.160.97'));
  6276.               console.log("cProto.dataChanged - NG");
  6277.  
  6278.             }
  6279.  
  6280.           })();
  6281.  
  6282.           console.log("[End]");
  6283.  
  6284.           console.groupEnd();
  6285.  
  6286.         }).catch(console.warn);
  6287.  
  6288.  
  6289.       }
  6290.  
  6291.  
  6292.       if (FIX_TOOLTIP_DISPLAY) {
  6293.  
  6294.  
  6295.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  6296.  
  6297.           mightFirstCheckOnYtInit();
  6298.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  6299.           console.log("[Begin]");
  6300.           (() => {
  6301.  
  6302.             const tag = "tp-yt-paper-tooltip"
  6303.             const dummy = document.createElement(tag);
  6304.  
  6305.             const cProto = getProto(dummy);
  6306.             if (!cProto || !cProto.attached) {
  6307.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6308.               return;
  6309.             }
  6310.  
  6311.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  6312.  
  6313.               cProto._readyClients43 = cProto._readyClients;
  6314.               cProto._readyClients = function () {
  6315.                 let r = cProto._readyClients43.apply(this, arguments);
  6316.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  6317.                 return r;
  6318.               }
  6319.  
  6320.               console.log("_readyClients - OK");
  6321.  
  6322.             } else {
  6323.               console.log("_readyClients - NG");
  6324.  
  6325.             }
  6326.  
  6327.             if (typeof cProto.show === 'function' && !cProto.show17) {
  6328.               cProto.show17 = cProto.show;
  6329.               cProto.show = function () {
  6330.  
  6331.                 let r = this.show17.apply(this, arguments);
  6332.                 this._showing === true && Promise.resolve().then(() => {
  6333.                   const tooltip = (this.$ || 0).tooltip;
  6334.  
  6335.                   if (tooltip && tooltip.firstElementChild === null) {
  6336.                     let text = tooltip.textContent;
  6337.                     if (typeof text === 'string' && text.length >= 2) {
  6338.                       tooltip.textContent = text.trim();
  6339.                     }
  6340.                   }
  6341.                 }).catch(console.warn)
  6342.                 return r;
  6343.               }
  6344.  
  6345.               console.log("trim tooltip content - OK");
  6346.  
  6347.             } else {
  6348.               console.log("trim tooltip content - NG");
  6349.  
  6350.             }
  6351.  
  6352.             /*
  6353.             cProto.updatePosition61 = cProto.updatePosition;
  6354.  
  6355.  
  6356.             cProto.updatePosition = function () {
  6357.  
  6358.  
  6359.               if (this._target && this.offsetParent) {
  6360.                 var a = this.offset;
  6361.                 14 != this.marginTop && 14 == this.offset && (a = this.marginTop);
  6362.                 var b = this.offsetParent.getBoundingClientRect()
  6363.                   , c = this._target.getBoundingClientRect()
  6364.                   , d = this.getBoundingClientRect()
  6365.                   , e = (c.width - d.width) / 2
  6366.                   , h = (c.height - d.height) / 2
  6367.                   , l = c.left - b.left
  6368.                   , m = c.top - b.top;
  6369.                 switch (this.position) {
  6370.                   case "top":
  6371.                     var p = l + e;
  6372.                     var q = m - d.height - a;
  6373.                     break;
  6374.                   case "bottom":
  6375.                     p = l + e;
  6376.                     q = m + c.height + a;
  6377.                     break;
  6378.                   case "left":
  6379.                     p = l - d.width - a;
  6380.                     q = m + h;
  6381.                     break;
  6382.                   case "right":
  6383.                     p = l + c.width + a,
  6384.                       q = m + h;
  6385.                 }
  6386.  
  6387.               if(this.ascee) {
  6388.                 this.fitToVisibleBounds = false;
  6389.               }
  6390.                 this.fitToVisibleBounds ? (b.left + p + d.width > window.innerWidth ? (this.style.right = "0px",
  6391.                   this.style.left = "auto") : (this.style.left = Math.max(0, p) + "px",
  6392.                     this.style.right = "auto"),
  6393.                   b.top + q + d.height > window.innerHeight ? (this.style.bottom = b.height + "px",
  6394.                     this.style.top = "auto") : (this.style.top = Math.max(-b.top, q) + "px",
  6395.                       this.style.bottom = "auto")) : (this.style.left = p + "px",
  6396.                         this.style.top = q + "px")
  6397.               }
  6398.             }
  6399.  
  6400.             cProto.updateStyles61 = cProto.updateStyles;
  6401.             cProto.updateStyles= function(){
  6402.               if(this.ascee) return;
  6403.               return this.updateStyles61.apply(this,arguments);
  6404.             }
  6405.             */
  6406.  
  6407.  
  6408.           })();
  6409.  
  6410.           console.log("[End]");
  6411.  
  6412.           console.groupEnd();
  6413.  
  6414.         }).catch(console.warn);
  6415.  
  6416.  
  6417.  
  6418.       }
  6419.  
  6420.  
  6421.  
  6422.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  6423.  
  6424.  
  6425.         const hookDocumentMouseDownSetupFn = () => {
  6426.  
  6427.  
  6428.  
  6429.           let muzTimestamp = 0;
  6430.           let nszDropdown = null;
  6431.  
  6432.  
  6433.  
  6434.           const handlerObject = {
  6435.  
  6436.             // mdHandler282 : function (evt) {
  6437.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6438.             //   if (!evt || !evt.isTrusted) return;
  6439.             //   muzTimestamp = 0;
  6440.             //   nszDropdown = null;
  6441.  
  6442.             //   const hostElement = this.hostElement || this;
  6443.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  6444.             //   if (!hostElement.contains(evt.target)) return;
  6445.             //   let targetDropDown = null;
  6446.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  6447.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  6448.             //       targetDropDown = dropdown;
  6449.             //     }
  6450.             //   }
  6451.             //   if ((nszDropdown = targetDropDown)) {
  6452.             //     muzTimestamp = Date.now();
  6453.             //     evt.stopImmediatePropagation();
  6454.             //     evt.stopPropagation();
  6455.             //   }
  6456.  
  6457.             // },
  6458.  
  6459.  
  6460.             muHandler282: function (evt) {
  6461.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6462.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6463.               const dropdown = nszDropdown;
  6464.               muzTimestamp = 0;
  6465.               nszDropdown = null;
  6466.  
  6467.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  6468.               const hostElement = kurMPC.hostElement || kurMPC;
  6469.               if (!hostElement.hasAttribute('menu-visible')) return;
  6470.  
  6471.               const chatBanner = HTMLElement.prototype.closest.call(hostElement, 'yt-live-chat-banner-renderer') || 0;
  6472.               if (chatBanner) return;
  6473.  
  6474.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  6475.  
  6476.                 /*
  6477.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6478.                 if(parentButton) return;
  6479.                 */
  6480.  
  6481.                 muzTimestamp = Date.now();
  6482.                 evt.stopImmediatePropagation();
  6483.                 evt.stopPropagation();
  6484.                 Promise.resolve(dropdown).then((dropdown) => {
  6485.                   dropdown.cancel();
  6486.                 });
  6487.                 // document.body.click();
  6488.               }
  6489.  
  6490.             },
  6491.  
  6492.             mlHandler282: function (evt) {
  6493.               muzTimestamp = 0;
  6494.               nszDropdown = null;
  6495.             },
  6496.  
  6497.             ckHandler282: function (evt) {
  6498.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6499.  
  6500.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6501.               if (Date.now() - muzTimestamp < 40) {
  6502.  
  6503.                 /*
  6504.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6505.                 if(parentButton) return;
  6506.                 */
  6507.  
  6508.                 muzTimestamp = Date.now();
  6509.                 evt.stopImmediatePropagation();
  6510.                 evt.stopPropagation();
  6511.               }
  6512.  
  6513.             },
  6514.  
  6515.             tapHandler282: function (evt) {
  6516.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  6517.  
  6518.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  6519.               if (Date.now() - muzTimestamp < 40) {
  6520.  
  6521.                 /*
  6522.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6523.                 if(parentButton) return;
  6524.                 */
  6525.  
  6526.                 muzTimestamp = Date.now();
  6527.                 evt.stopImmediatePropagation();
  6528.                 evt.stopPropagation();
  6529.               }
  6530.  
  6531.             },
  6532.  
  6533.  
  6534.             handleEvent(evt) {
  6535.  
  6536.  
  6537.               if (evt) {
  6538.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  6539.                 const cnt = insp(kurMPC);
  6540.                 const hostElement = cnt.hostElement || cnt;
  6541.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  6542.                 switch (evt.type) {
  6543.                   // case 'mousedown':
  6544.                   // return this.mdHandler282.call(kurMPC, evt);
  6545.                   case 'mouseup':
  6546.                     return this.muHandler282(evt);
  6547.                   case 'mouseleave':
  6548.                     return this.mlHandler282(evt);
  6549.                   case 'tap':
  6550.                     return this.tapHandler282(evt);
  6551.                   case 'click':
  6552.                     return this.ckHandler282(evt);
  6553.                 }
  6554.               }
  6555.  
  6556.             }
  6557.  
  6558.  
  6559.  
  6560.           }
  6561.  
  6562.           document.addEventListener('mousedown', function (evt) {
  6563.  
  6564.             if (!evt || !evt.isTrusted || !evt.target) return;
  6565.  
  6566.  
  6567.  
  6568.             muzTimestamp = 0;
  6569.             nszDropdown = null;
  6570.  
  6571.             /*
  6572.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  6573.             if(parentButton){
  6574.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  6575.               if(kurMPC){
  6576.                 evt.preventDefault();
  6577.                 evt.stopImmediatePropagation();
  6578.                 evt.stopPropagation();
  6579.               }
  6580.               return;
  6581.             }
  6582.             */
  6583.  
  6584.             /** @type {HTMLElement | null} */
  6585.             const kurMP = kRef(currentMenuPivotWR);
  6586.             if (!kurMP) return;
  6587.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  6588.  
  6589.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  6590.  
  6591.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  6592.  
  6593.             const chatBanner = HTMLElement.prototype.closest.call(kurMPC, 'yt-live-chat-banner-renderer') || 0;
  6594.             if (chatBanner) return;
  6595.  
  6596.  
  6597.             let targetDropDown = null;
  6598.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  6599.               if (dropdown && dropdown.positionTarget === kurMP) {
  6600.                 targetDropDown = dropdown;
  6601.               }
  6602.             }
  6603.  
  6604.             if (!targetDropDown) return;
  6605.  
  6606.  
  6607.             /*
  6608.             if (parentButton) {
  6609.               evt.preventDefault();
  6610.               evt.stopImmediatePropagation();
  6611.               evt.stopPropagation();
  6612.               currentMenuPivotWR = mWeakRef(kurMPC);
  6613.               return;
  6614.             }
  6615.             */
  6616.  
  6617.             if ((nszDropdown = targetDropDown)) {
  6618.               muzTimestamp = Date.now();
  6619.               evt.stopImmediatePropagation();
  6620.               evt.stopPropagation();
  6621.               currentMenuPivotWR = mWeakRef(kurMPC);
  6622.  
  6623.               const listenOpts = { capture: true, passive: false, once: true };
  6624.  
  6625.               // remove unexcecuted eventHandler
  6626.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  6627.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  6628.               document.removeEventListener('tap', handlerObject, listenOpts);
  6629.               document.removeEventListener('click', handlerObject, listenOpts);
  6630.  
  6631.               // inject one time eventHandler to by pass events
  6632.               document.addEventListener('mouseup', handlerObject, listenOpts);
  6633.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  6634.               document.addEventListener('tap', handlerObject, listenOpts);
  6635.               document.addEventListener('click', handlerObject, listenOpts);
  6636.  
  6637.             }
  6638.  
  6639.           }, true);
  6640.  
  6641.         }
  6642.  
  6643.  
  6644.         // yt-live-chat-paid-message-renderer ??
  6645.  
  6646.         /*
  6647.  
  6648.         [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  6649.  
  6650.  
  6651.         "yt-live-chat-ticker-paid-message-item-renderer"
  6652.         "yt-live-chat-ticker-paid-sticker-item-renderer"
  6653.         "yt-live-chat-paid-message-renderer"
  6654.         "yt-live-chat-text-message-renderer"
  6655.         "yt-live-chat-paid-sticker-renderer"
  6656.  
  6657.         */
  6658.  
  6659.  
  6660.         whenDefinedMultiple([
  6661.  
  6662.           "yt-live-chat-paid-message-renderer",
  6663.           "yt-live-chat-membership-item-renderer",
  6664.           "yt-live-chat-paid-sticker-renderer",
  6665.           "yt-live-chat-text-message-renderer",
  6666.           "yt-live-chat-auto-mod-message-renderer",
  6667.  
  6668.           /*
  6669.           "yt-live-chat-ticker-paid-message-item-renderer",
  6670.           "yt-live-chat-ticker-paid-sticker-item-renderer",
  6671.           "yt-live-chat-paid-message-renderer",
  6672.           "yt-live-chat-text-message-renderer",
  6673.           "yt-live-chat-paid-sticker-renderer",
  6674.  
  6675.           "yt-live-chat-ticker-sponsor-item-renderer",
  6676.           "yt-live-chat-banner-header-renderer",
  6677.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6678.           "ytd-sponsorships-live-chat-header-renderer",
  6679.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6680.  
  6681.  
  6682.  
  6683.  
  6684.           "yt-live-chat-auto-mod-message-renderer",
  6685.           "yt-live-chat-text-message-renderer",
  6686.           "yt-live-chat-paid-message-renderer",
  6687.  
  6688.           "yt-live-chat-legacy-paid-message-renderer",
  6689.           "yt-live-chat-membership-item-renderer",
  6690.           "yt-live-chat-paid-sticker-renderer",
  6691.           "yt-live-chat-donation-announcement-renderer",
  6692.           "yt-live-chat-moderation-message-renderer",
  6693.           "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  6694.           "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  6695.           "yt-live-chat-viewer-engagement-message-renderer",
  6696.  
  6697.           */
  6698.  
  6699.  
  6700.         ]).then(sTags => {
  6701.  
  6702.  
  6703.           mightFirstCheckOnYtInit();
  6704.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-renderer(s)... hacks");
  6705.           console.log("[Begin]");
  6706.           let doMouseHook = false;
  6707.  
  6708.           const dProto = {
  6709.             isClickableChatRow111: function () {
  6710.               return (
  6711.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  6712.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  6713.               ); // follow .onItemTap(a)
  6714.             }
  6715.           };
  6716.  
  6717.           for (const sTag of sTags) { // ##tag##
  6718.  
  6719.  
  6720.             (() => {
  6721.  
  6722.               const tag = sTag;
  6723.               const dummy = document.createElement(tag);
  6724.  
  6725.               const cProto = getProto(dummy);
  6726.               if (!cProto || !cProto.attached) {
  6727.                 console.warn(`proto.attached for ${tag} is unavailable.`);
  6728.                 return;
  6729.               }
  6730.  
  6731.               const dCnt = insp(dummy);
  6732.               if ('wholeMessageClickable' in dCnt && typeof dCnt.hasModerationOverlayVisible === 'function' && typeof dCnt.shouldSupportWholeItemClick === 'function') {
  6733.  
  6734.                 cProto.isClickableChatRow111 = dProto.isClickableChatRow111;
  6735.  
  6736.                 const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  6737.  
  6738.                 if (toHookDocumentMouseDown) {
  6739.                   doMouseHook = true;
  6740.                 }
  6741.  
  6742.                 console.log("shouldSupportWholeItemClick Y", tag);
  6743.  
  6744.               } else {
  6745.  
  6746.                 console.log("shouldSupportWholeItemClick N", tag);
  6747.               }
  6748.  
  6749.  
  6750.             })();
  6751.  
  6752.           }
  6753.  
  6754.  
  6755.           if (doMouseHook) {
  6756.  
  6757.             hookDocumentMouseDownSetupFn();
  6758.  
  6759.  
  6760.             console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  6761.           }
  6762.  
  6763.           console.log("[End]");
  6764.  
  6765.           console.groupEnd();
  6766.  
  6767.  
  6768.         }).catch(console.warn);
  6769.  
  6770.  
  6771.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  6772.  
  6773.  
  6774.       }
  6775.  
  6776.       if (NO_ITEM_TAP_FOR_NON_STATIONARY_TAP) {
  6777.         let targetElementCntWR = null;
  6778.         let _e0 = null;
  6779.         document.addEventListener('mousedown', (e) => {
  6780.           if (!e || !e.isTrusted) return;
  6781.           let element = e.target;
  6782.           for (; element instanceof HTMLElement; element = element.parentNode) {
  6783.             if (element.is) break;
  6784.           }
  6785.           if (!element || !element.is) return;
  6786.           const cnt = insp(element);
  6787.           if (typeof cnt.onItemTap === 'function') {
  6788.             cnt._onItemTap_isNonStationary = 0;
  6789.             const cProto = getProto(element);
  6790.             if (!cProto.onItemTap366 && typeof cProto.onItemTap === 'function' && cProto.onItemTap.length === 1) {
  6791.               cProto.onItemTap366 = cProto.onItemTap;
  6792.               cProto.onItemTap = function (a) {
  6793.                 const t = this._onItemTap_isNonStationary;
  6794.                 this._onItemTap_isNonStationary = 0;
  6795.                 if (t > Date.now()) return;
  6796.                 return this.onItemTap366.apply(this, arguments)
  6797.               }
  6798.             }
  6799.             _e0 = e;
  6800.             targetElementCntWR = mWeakRef(cnt);
  6801.           } else {
  6802.             _e0 = null;
  6803.             targetElementCntWR = null;
  6804.           }
  6805.         }, { capture: true, passive: true });
  6806.  
  6807.         document.addEventListener('mouseup', (e) => {
  6808.           if (!e || !e.isTrusted) return;
  6809.           const e0 = _e0;
  6810.           _e0 = null;
  6811.           if (!e0) return;
  6812.           const cnt = kRef(targetElementCntWR);
  6813.           targetElementCntWR = null;
  6814.           if (!cnt) return;
  6815.           if (e.timeStamp - e0.timeStamp > TAP_ACTION_DURATION) {
  6816.             cnt._onItemTap_isNonStationary = Date.now() + 40;
  6817.           } else if ((window.getSelection() + "").trim().replace(/[\u2000-\u200a\u202f\u2800\u200B\u200C\u200D\uFEFF]+/g, '').length >= 1) {
  6818.             cnt._onItemTap_isNonStationary = Date.now() + 40;
  6819.           } else {
  6820.             const dx = e.clientX - e0.clientX;
  6821.             const dy = e.clientY - e0.clientY;
  6822.             const dd = Math.sqrt(dx * dx + dy * dy);
  6823.             const ddmm = px2mm(dd);
  6824.             if (ddmm > 1.0) {
  6825.               cnt._onItemTap_isNonStationary = Date.now() + 40;
  6826.             } else {
  6827.               cnt._onItemTap_isNonStationary = 0;
  6828.             }
  6829.           }
  6830.         }, { capture: true, passive: true });
  6831.  
  6832.       }
  6833.  
  6834.  
  6835.       const __showContextMenu_assign_lock_with_external_unlock_ = function (targetCnt) {
  6836.  
  6837.         let rr = null;
  6838.         const p1 = new Promise(resolve => {
  6839.           rr = resolve;
  6840.         });
  6841.  
  6842.         const p1unlock = () => {
  6843.           const f = rr;
  6844.           if (f) {
  6845.             rr = null;
  6846.             f();
  6847.           }
  6848.         }
  6849.  
  6850.         return {
  6851.           p1,
  6852.           p1unlock,
  6853.           assignLock: (targetCnt, timeout) => {
  6854.             targetCnt.__showContextMenu_assign_lock__(p1);
  6855.             if (timeout) setTimeout(p1unlock, timeout);
  6856.           }
  6857.         }
  6858.  
  6859.       }
  6860.  
  6861.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  6862.  
  6863.         document.addEventListener('mousedown', function (evt) {
  6864.  
  6865.           const maxloopDOMTreeElements = 4;
  6866.           const maxloopYtCompontents = 4;
  6867.           let j1 = 0;
  6868.           let j2 = 0;
  6869.           let target = (evt || 0).target || 0;
  6870.           if (!target) return;
  6871.  
  6872.  
  6873.           while (target instanceof HTMLElement) {
  6874.             if (++j1 > maxloopDOMTreeElements) break;
  6875.             if (typeof (target.is || insp(target).is || null) === 'string') break;
  6876.             target = nodeParent(target);
  6877.           }
  6878.           const components = [];
  6879.           while (target instanceof HTMLElement) {
  6880.             if (++j2 > maxloopYtCompontents) break;
  6881.             const cnt = insp(target);
  6882.             if (typeof (target.is || cnt.is || null) === 'string') {
  6883.               components.push(target);
  6884.             }
  6885.             if (typeof cnt.showContextMenu === 'function') break;
  6886.             target = target.parentComponent || cnt.parentComponent || null;
  6887.           }
  6888.           if (!(target instanceof HTMLElement)) return;
  6889.           const targetCnt = insp(target);
  6890.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  6891.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  6892.             return;
  6893.           }
  6894.  
  6895.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  6896.           if (!endpoint) return;
  6897.           if (targetCnt.opened || !targetCnt.isAttached) return;
  6898.  
  6899.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  6900.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  6901.           }
  6902.  
  6903.           const targetDollar = indr(target);
  6904.  
  6905.           let doPreRequest = false;
  6906.           if (components.length >= 2 && components[0].id === 'menu-button' && (targetDollar || 0)['menu-button'] === components[0]) {
  6907.             doPreRequest = true;
  6908.           } else if (components.length === 1 && components[0] === target) {
  6909.             doPreRequest = true;
  6910.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (targetDollar || 0)['author-photo'] === components[0]) {
  6911.             doPreRequest = true;
  6912.           }
  6913.           if (doPreRequest === false) {
  6914.             console.log('doPreRequest = fasle on showContextMenu', components);
  6915.             return;
  6916.           }
  6917.  
  6918.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function' || targetCnt.__getCachedEndpointData__(endpoint)) return;
  6919.  
  6920.           if ((typeof targetCnt.__showContextMenu_mutex_unlock_isEmpty__ === 'function') && !targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  6921.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  6922.             return;
  6923.           }
  6924.  
  6925.  
  6926.           const onSuccess = (a) => {
  6927.             /*
  6928.  
  6929.               dQ() && (a = a.response);
  6930.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6931.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  6932.  
  6933.             */
  6934.  
  6935.             a = a.response || a;
  6936.  
  6937.             if (!a) {
  6938.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  6939.               return;
  6940.             }
  6941.  
  6942.             let z = null;
  6943.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  6944.  
  6945.             if (z) {
  6946.               a = z;
  6947.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  6948.             }
  6949.  
  6950.           };
  6951.           const onFailure = (a) => {
  6952.  
  6953.             /*
  6954.  
  6955.               if (a instanceof Error || a instanceof Object || a instanceof String)
  6956.                   var b = a;
  6957.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  6958.  
  6959.             */
  6960.  
  6961.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  6962.             // console.log('onFailure', a)
  6963.  
  6964.           };
  6965.  
  6966.           if (doPreRequest) {
  6967.  
  6968.             let propertyCounter = 0;
  6969.             const pm1 = __showContextMenu_assign_lock_with_external_unlock_(targetCnt);
  6970.             const p1Timeout = 800;
  6971.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  6972.  
  6973.             try {
  6974.  
  6975.               const onSuccessHelperFn = function () {
  6976.                 pm1.p1unlock();
  6977.                 if (propertyCounter !== 5) {
  6978.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  6979.                   return;
  6980.                 }
  6981.                 if (this[proxyKey] !== targetCnt) {
  6982.                   console.log('Error in prerequest for showContextMenu.this');
  6983.                   return;
  6984.                 }
  6985.                 onSuccess(...arguments);
  6986.               };
  6987.               const onFailureHelperFn = function () {
  6988.                 pm1.p1unlock();
  6989.                 if (propertyCounter !== 5) {
  6990.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  6991.                   return;
  6992.                 }
  6993.                 if (this[proxyKey] !== targetCnt) {
  6994.                   console.log('Error in prerequest for showContextMenu.this');
  6995.                   return;
  6996.                 }
  6997.                 onFailure(...arguments);
  6998.  
  6999.               }
  7000.               const fakeTargetCnt = new Proxy({
  7001.                 __showContextMenu_forceNativeRequest__: 1,
  7002.                 __showContextMenu_sync_mode_request__: 1,
  7003.                 get handleGetContextMenuResponse_() {
  7004.                   propertyCounter += 2;
  7005.                   return onSuccessHelperFn;
  7006.                 },
  7007.                 get handleGetContextMenuError() {
  7008.                   propertyCounter += 3;
  7009.                   return onFailureHelperFn;
  7010.                 }
  7011.               }, {
  7012.                 get(_, key, receiver) {
  7013.                   if (key in _) return _[key];
  7014.                   if (key === proxyKey) return targetCnt;
  7015.  
  7016.                   let giveNative = false;
  7017.                   if (key in targetCnt) {
  7018.                     if (key === 'data') giveNative = true;
  7019.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  7020.                   }
  7021.                   if (giveNative) return targetCnt[key];
  7022.                 }
  7023.               });
  7024.  
  7025.               const fakeEvent = (() => {
  7026.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  7027.                 const nf = function () { }
  7028.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  7029.  
  7030.                 return {
  7031.                   type: 'tap',
  7032.                   eventPhase: 0,
  7033.                   isTrusted: false,
  7034.                   __composed: true,
  7035.                   bubbles, cancelable, cancelBubble, timeStamp,
  7036.                   target, srcElement, defaultPrevented, currentTarget, composed,
  7037.                   stopPropagation, stopImmediatePropagation, preventDefault
  7038.                 };
  7039.               })(evt);
  7040.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  7041.  
  7042.  
  7043.             } catch (e) {
  7044.               console.warn(e);
  7045.               propertyCounter = 7;
  7046.  
  7047.             }
  7048.             if (propertyCounter !== 5) {
  7049.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  7050.               return;
  7051.             }
  7052.  
  7053.             pm1.assignLock(targetCnt, p1Timeout);
  7054.  
  7055.           }
  7056.  
  7057.  
  7058.  
  7059.  
  7060.  
  7061.  
  7062.         }, true);
  7063.  
  7064.  
  7065.       }
  7066.  
  7067.  
  7068.  
  7069.       /*
  7070.  
  7071.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  7072.  
  7073.       */
  7074.  
  7075.       whenDefinedMultiple([
  7076.         "yt-live-chat-ticker-sponsor-item-renderer",
  7077.         "yt-live-chat-banner-header-renderer",
  7078.         "yt-live-chat-text-message-renderer",
  7079.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  7080.         "ytd-sponsorships-live-chat-header-renderer",
  7081.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer",
  7082.  
  7083.         "yt-live-chat-paid-sticker-renderer",
  7084.         "yt-live-chat-viewer-engagement-message-renderer",
  7085.         "yt-live-chat-paid-message-renderer"
  7086.  
  7087.  
  7088.  
  7089.  
  7090.       ]).then(sTags => {
  7091.  
  7092.         mightFirstCheckOnYtInit();
  7093.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  7094.         console.log("[Begin]");
  7095.  
  7096.  
  7097.         const __showContextMenu_mutex__ = new Mutex();
  7098.         let __showContextMenu_mutex_unlock__ = null;
  7099.         let lastShowMenuTarget = null;
  7100.  
  7101.  
  7102.  
  7103.  
  7104.         const wm37 = new WeakMap();
  7105.  
  7106.         const dProto = {
  7107.  
  7108.  
  7109.           // CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN
  7110.  
  7111.           __cacheResolvedEndpointData__: (endpoint, a, doDeepCopy) => {
  7112.             if (a) {
  7113.               if (doDeepCopy) a = deepCopy(a);
  7114.               wm37.set(endpoint, a);
  7115.             } else {
  7116.               wm37.remove(endpoint);
  7117.             }
  7118.           },
  7119.           __getCachedEndpointData__: function (endpoint) {
  7120.             endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  7121.             if (endpoint) return wm37.get(endpoint);
  7122.             return null;
  7123.           },
  7124.           /** @type {(resolvedEndpoint: any) => void 0} */
  7125.           __showCachedContextMenu__: function (resolvedEndpoint) { // non-null
  7126.  
  7127.             resolvedEndpoint = deepCopy(resolvedEndpoint);
  7128.             // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  7129.             Promise.resolve(resolvedEndpoint).then(() => {
  7130.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  7131.               this.showContextMenu_(resolvedEndpoint);
  7132.               this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  7133.             });
  7134.  
  7135.  
  7136.           },
  7137.  
  7138.  
  7139.  
  7140.           showContextMenuForCacheReopen: function (a) {
  7141.             if (!this.__showContextMenu_forceNativeRequest__) {
  7142.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  7143.               if (endpoint) {
  7144.                 const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  7145.                 if (resolvedEndpoint) {
  7146.                   this.__showCachedContextMenu__(resolvedEndpoint);
  7147.                   a && a.stopPropagation()
  7148.                   return;
  7149.                 }
  7150.               }
  7151.             }
  7152.             return this.showContextMenu37(a);
  7153.           },
  7154.  
  7155.           showContextMenuForCacheReopen_: function (a) {
  7156.             if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  7157.               const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  7158.               if (endpoint) {
  7159.                 const f = this.__cacheResolvedEndpointData__;
  7160.                 if (typeof f === 'function') f(endpoint, a, true);
  7161.               }
  7162.             }
  7163.             return this.showContextMenu37_(a);
  7164.           },
  7165.  
  7166.           // ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU
  7167.  
  7168.           showContextMenuWithDisableScroll: function (a) {
  7169.  
  7170.             const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  7171.             if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  7172.  
  7173.               const parentComponent = this.parentComponent;
  7174.               if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  7175.                 parentComponent.allowScroll = false;
  7176.               }
  7177.             }
  7178.  
  7179.             return this.showContextMenu48.apply(this, arguments);
  7180.  
  7181.           },
  7182.  
  7183.           // ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU
  7184.  
  7185.           __showContextMenu_mutex_unlock_isEmpty__: () => {
  7186.             return __showContextMenu_mutex_unlock__ === null;
  7187.           },
  7188.  
  7189.           __showContextMenu_assign_lock__: function (p) {
  7190.  
  7191.             const mutex = __showContextMenu_mutex__;
  7192.  
  7193.             mutex.lockWith(unlock => {
  7194.               p.then(unlock);
  7195.             });
  7196.  
  7197.           },
  7198.  
  7199.           showContextMenuWithMutex: function (a) {
  7200.             lastShowMenuTarget = this;
  7201.  
  7202.             if (this.__showContextMenu_sync_mode_request__) {
  7203.  
  7204.               return this.showContextMenu47(a);
  7205.             } else {
  7206.  
  7207.               const mutex = __showContextMenu_mutex__;
  7208.  
  7209.               mutex.lockWith(unlock => {
  7210.                 if (lastShowMenuTarget !== this) {
  7211.                   unlock();
  7212.                   return;
  7213.                 }
  7214.  
  7215.                 setTimeout(unlock, 800); // in case network failure
  7216.                 __showContextMenu_mutex_unlock__ = unlock;
  7217.                 try {
  7218.                   this.showContextMenu47(a);
  7219.                 } catch (e) {
  7220.                   console.warn(e);
  7221.                   unlock(); // in case function script error
  7222.                 }
  7223.  
  7224.               });
  7225.  
  7226.             }
  7227.  
  7228.  
  7229.           },
  7230.  
  7231.           showContextMenuWithMutex_: function (a) {
  7232.  
  7233.             if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  7234.               __showContextMenu_mutex_unlock__();
  7235.               __showContextMenu_mutex_unlock__ = null;
  7236.             }
  7237.             return this.showContextMenu47_(a);
  7238.  
  7239.           }
  7240.  
  7241.         }
  7242.  
  7243.         for (const tag of sTags) { // ##tag##
  7244.  
  7245.  
  7246.  
  7247.           (() => {
  7248.  
  7249.             const dummy = document.createElement(tag);
  7250.  
  7251.             const cProto = getProto(dummy);
  7252.             if (!cProto || !cProto.attached) {
  7253.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7254.               return;
  7255.             }
  7256.  
  7257.  
  7258.  
  7259.  
  7260.             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) {
  7261.  
  7262.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  7263.               cProto.showContextMenu37 = cProto.showContextMenu;
  7264.  
  7265.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  7266.               cProto.__cacheResolvedEndpointData__ = dProto.__cacheResolvedEndpointData__
  7267.               cProto.__getCachedEndpointData__ = dProto.__getCachedEndpointData__
  7268.               cProto.__showCachedContextMenu__ = dProto.__showCachedContextMenu__
  7269.  
  7270.               cProto.showContextMenu = dProto.showContextMenuForCacheReopen;
  7271.  
  7272.               cProto.showContextMenu_ = dProto.showContextMenuForCacheReopen_;
  7273.  
  7274.  
  7275.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  7276.  
  7277.  
  7278.  
  7279.             } else {
  7280.  
  7281.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - NG", tag);
  7282.  
  7283.             }
  7284.  
  7285.  
  7286.  
  7287.             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) {
  7288.  
  7289.  
  7290.               cProto.showContextMenu48 = cProto.showContextMenu;
  7291.  
  7292.  
  7293.               cProto.showContextMenu = dProto.showContextMenuWithDisableScroll;
  7294.  
  7295.  
  7296.  
  7297.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7298.  
  7299.  
  7300.  
  7301.             } else {
  7302.  
  7303.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7304.  
  7305.             }
  7306.  
  7307.  
  7308.  
  7309.  
  7310.  
  7311.             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) {
  7312.  
  7313.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  7314.               cProto.showContextMenu47 = cProto.showContextMenu;
  7315.  
  7316.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = dProto.__showContextMenu_mutex_unlock_isEmpty__;
  7317.               cProto.__showContextMenu_assign_lock__ = dProto.__showContextMenu_assign_lock__;
  7318.               cProto.showContextMenu = dProto.showContextMenuWithMutex;
  7319.               cProto.showContextMenu_ = dProto.showContextMenuWithMutex_;
  7320.  
  7321.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  7322.  
  7323.  
  7324.  
  7325.             } else {
  7326.  
  7327.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - NG", tag);
  7328.  
  7329.             }
  7330.  
  7331.  
  7332.  
  7333.  
  7334.           })();
  7335.  
  7336.         }
  7337.  
  7338.  
  7339.  
  7340.         console.log("[End]");
  7341.  
  7342.         console.groupEnd();
  7343.  
  7344.       }).catch(console.warn);
  7345.  
  7346.  
  7347.  
  7348.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  7349.  
  7350.         mightFirstCheckOnYtInit();
  7351.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  7352.         console.log("[Begin]");
  7353.         (() => {
  7354.  
  7355.           const tag = "tp-yt-iron-dropdown";
  7356.           const dummy = document.createElement(tag);
  7357.  
  7358.           const cProto = getProto(dummy);
  7359.           if (!cProto || !cProto.attached) {
  7360.             console.warn(`proto.attached for ${tag} is unavailable.`);
  7361.             return;
  7362.           }
  7363.  
  7364.  
  7365.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  7366.             cProto.__deraf_hn__ = function (sId, fn) {
  7367.               const rhKey = `_rafHandler_${sId}`;
  7368.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  7369.               if (m.has(fn)) return m.get(fn);
  7370.               const resFn = () => {
  7371.                 this.__rafs[sId] = null;
  7372.                 fn.call(this)
  7373.               };
  7374.               m.set(fn, resFn);
  7375.               m.set(resFn, resFn);
  7376.               return resFn;
  7377.             };
  7378.             cProto.__deraf34 = cProto.__deraf;
  7379.             cProto.__deraf = function (a, b) { // sId, fn
  7380.               let c = this.__rafs;
  7381.               null !== c[a] && cancelAnimationFrame(c[a]);
  7382.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  7383.             };
  7384.             console.log("USE_VANILLA_DEREF - OK");
  7385.           } else {
  7386.             console.log("USE_VANILLA_DEREF - NG");
  7387.           }
  7388.  
  7389.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  7390.             cProto.__deraf66 = cProto.__deraf;
  7391.             cProto.__deraf = function (sId, fn) {
  7392.               if (this.__byPassRAF__) {
  7393.                 Promise.resolve().then(() => {
  7394.                   fn.call(this);
  7395.                 });
  7396.               }
  7397.               let r = this.__deraf66.apply(this, arguments);
  7398.               return r;
  7399.             }
  7400.             console.log("FIX_DROPDOWN_DERAF - OK");
  7401.           } else {
  7402.             console.log("FIX_DROPDOWN_DERAF - NG");
  7403.           }
  7404.  
  7405.  
  7406.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  7407.  
  7408.             let lastClose = null;
  7409.             let lastOpen = null;
  7410.             let cid = 0;
  7411.  
  7412.             cProto.__mtChanged__ = function (b) {
  7413.  
  7414.               Promise.resolve().then(() => {
  7415.                 this._applyFocus();
  7416.               }).then(() => {
  7417.                 b ? this._renderOpened() : this._renderClosed();
  7418.               }).catch(console.warn);
  7419.  
  7420.             };
  7421.  
  7422.             const __moChanged__ = () => {
  7423.               if (!cid) return;
  7424.               // console.log(553, !!lastOpen, !!lastClose);
  7425.               cid = 0;
  7426.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  7427.                 lastOpen.__mtChanged__(1)
  7428.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  7429.                 lastClose.__mtChanged__(0);
  7430.               }
  7431.               lastOpen = null;
  7432.               lastClose = null;
  7433.             };
  7434.  
  7435.  
  7436.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  7437.               cProto._openedChanged66 = cProto._openedChanged;
  7438.               cProto._openedChanged = function () {
  7439.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  7440.                 this.__byPassRAF__ = true;
  7441.                 let r = this._openedChanged66.apply(this, arguments);
  7442.                 this.__byPassRAF__ = false;
  7443.                 return r;
  7444.               }
  7445.             }
  7446.  
  7447.             const pSetGet = (key, pdThis, pdBase) => {
  7448.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  7449.               return {
  7450.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  7451.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  7452.               };
  7453.             };
  7454.  
  7455.             cProto.__modifiedMenuPropsFn__ = function () {
  7456.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  7457.               const pdBase = Object.getOwnPropertyDescriptors(this)
  7458.  
  7459.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  7460.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  7461.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  7462.  
  7463.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  7464.                 console.warn('there is setter/getter for autoFitOnAttach');
  7465.                 return;
  7466.               }
  7467.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  7468.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  7469.                 return;
  7470.               }
  7471.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  7472.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  7473.                 return;
  7474.               }
  7475.  
  7476.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  7477.  
  7478.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  7479.  
  7480.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  7481.  
  7482.               Object.defineProperties(this, {
  7483.                 autoFitOnAttach: {
  7484.                   get() {
  7485.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  7486.                     return autoFitOnAttach;
  7487.                   },
  7488.                   set(nv) {
  7489.                     autoFitOnAttach = nv;
  7490.                     return true;
  7491.                   },
  7492.                   enumerable: true,
  7493.                   configurable: true
  7494.                 }, expandSizingTargetForScrollbars: {
  7495.                   get() {
  7496.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  7497.                     return expandSizingTargetForScrollbars;
  7498.                   },
  7499.                   set(nv) {
  7500.                     expandSizingTargetForScrollbars = nv;
  7501.                     return true;
  7502.                   },
  7503.                   enumerable: true,
  7504.                   configurable: true
  7505.                 }, allowOutsideScroll: {
  7506.                   get() {
  7507.                     if (this._modifiedMenuPropOn062__) return true;
  7508.                     return allowOutsideScroll;
  7509.                   },
  7510.                   set(nv) {
  7511.                     allowOutsideScroll = nv;
  7512.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  7513.                     return true;
  7514.                   },
  7515.                   enumerable: true,
  7516.                   configurable: true
  7517.                 }
  7518.               })
  7519.             };
  7520.  
  7521.             /*
  7522.                // ***** position() to be changed. *****
  7523.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  7524.  
  7525.                   overflow: visible !important;
  7526.                   min-width: max-content !important;
  7527.                   max-width: max-content !important;
  7528.                   max-height: max-content !important;
  7529.                   min-height: max-content !important;
  7530.                   white-space: nowrap;
  7531.               }
  7532.  
  7533.             */
  7534.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  7535.  
  7536.               let m34 = 0;
  7537.               cProto.__refitByPosition__ = function () {
  7538.                 m34++;
  7539.                 if (m34 <= 0) m34 = 0;
  7540.                 if (m34 !== 1) return;
  7541.                 const hostElement = this.hostElement || this;
  7542.                 if (document.visibilityState === 'visible') {
  7543.                   const sizingTarget = this.sizingTarget;
  7544.                   if (!sizingTarget) {
  7545.                     m34 = 0;
  7546.                     return;
  7547.                   }
  7548.  
  7549.                   /*
  7550.                   let useVisibilityCollapse = true;
  7551.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  7552.                     useVisibilityCollapse = false;
  7553.                   }
  7554.  
  7555.                   if (useVisibilityCollapse) {
  7556.                     hostElement.style.visibility = 'collapse';
  7557.                     sizingTarget.style.visibility = 'collapse';
  7558.                   } else {
  7559.                     hostElement.setAttribute('rNgzQ', '');
  7560.                     sizingTarget.setAttribute('rNgzQ', '');
  7561.                   }
  7562.                   */
  7563.                   hostElement.setAttribute('rNgzQ', '');
  7564.                   sizingTarget.setAttribute('rNgzQ', '');
  7565.  
  7566.                   const gn = () => {
  7567.                     /*
  7568.                     if (useVisibilityCollapse) {
  7569.                       hostElement.style.visibility = '';
  7570.                       sizingTarget.style.visibility = '';
  7571.                     } else {
  7572.                       hostElement.removeAttribute('rNgzQ');
  7573.                       sizingTarget.removeAttribute('rNgzQ');
  7574.                     }
  7575.                     */
  7576.                     hostElement.removeAttribute('rNgzQ');
  7577.                     sizingTarget.removeAttribute('rNgzQ');
  7578.                   }
  7579.  
  7580.                   const an = async () => {
  7581.                     while (m34 >= 1) {
  7582.                       await renderReadyPn(sizingTarget);
  7583.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  7584.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  7585.                       }
  7586.                       m34--;
  7587.                     }
  7588.                     m34 = 0;
  7589.                     Promise.resolve().then(gn);
  7590.                   }
  7591.                   setTimeout(an, 4); // wait those resizing function calls
  7592.  
  7593.  
  7594.                 } else {
  7595.                   m34 = 0;
  7596.                 }
  7597.               }
  7598.               cProto.position34 = cProto.position
  7599.               cProto.position = function () {
  7600.                 if (this._positionInitialize_) {
  7601.                   this._positionInitialize_ = 0;
  7602.                   this.__refitByPosition__();
  7603.                 }
  7604.                 let r = cProto.position34.apply(this, arguments);
  7605.                 return r;
  7606.               }
  7607.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  7608.  
  7609.             } else {
  7610.  
  7611.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  7612.  
  7613.             }
  7614.  
  7615.  
  7616.  
  7617.             cProto.__openedChanged = function () {
  7618.               this._positionInitialize_ = 1;
  7619.               // this.removeAttribute('horizontal-align')
  7620.               // this.removeAttribute('vertical-align')
  7621.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  7622.                 this.__menuTypeCheck__ = true;
  7623.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  7624.                   this._modifiedMenuPropOn062__ = false;
  7625.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7626.                   // this.autoFitOnAttach = true;
  7627.                   // this.expandSizingTargetForScrollbars = true;
  7628.                   // this.allowOutsideScroll = true;
  7629.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  7630.                   this.__modifiedMenuPropsFn__();
  7631.                   // this.constrain= function(){}
  7632.                   // this.position= function(){}
  7633.  
  7634.                   // this.autoFitOnAttach = true;
  7635.                   // this.expandSizingTargetForScrollbars = true;
  7636.                   // this.allowOutsideScroll = true;
  7637.                 }
  7638.               }
  7639.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  7640.                 let newValue = null;
  7641.                 const positionTarget = this.positionTarget;
  7642.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  7643.                   if (this._modifiedMenuPropOn062__ === false) {
  7644.                     newValue = true;
  7645.                   }
  7646.                 } else if (this._modifiedMenuPropOn062__ === true) {
  7647.                   newValue = false;
  7648.                 }
  7649.                 if (newValue !== null) {
  7650.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  7651.                   this._modifiedMenuPropOn062__ = newValue;
  7652.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  7653.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  7654.                 }
  7655.               }
  7656.  
  7657.               if (this.opened) {
  7658.  
  7659.                 Promise.resolve().then(() => {
  7660.  
  7661.                   this._prepareRenderOpened();
  7662.                 }).then(() => {
  7663.                   this._manager.addOverlay(this);
  7664.                   if (this._manager._overlays.length === 1) {
  7665.                     lastOpen = this;
  7666.                     lastClose = null;
  7667.                   } else {
  7668.                     return 1;
  7669.                   }
  7670.                   // if (cid) {
  7671.                   //   clearTimeout(cid);
  7672.                   //   cid = -1;
  7673.                   //   this.__moChanged__();
  7674.                   //   cid = 0;
  7675.                   // } else {
  7676.                   //   cid = -1;
  7677.                   //   this.__moChanged__();
  7678.                   //   cid = 0;
  7679.                   // }
  7680.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7681.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7682.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7683.                   cid = cid || requestAnimationFrame(__moChanged__);
  7684.                 }).then((r) => {
  7685.  
  7686.                   if (r) this.__mtChanged__(1);
  7687.                 }).catch(console.warn);
  7688.  
  7689.               } else {
  7690.                 Promise.resolve().then(() => {
  7691.                   this._manager.removeOverlay(this);
  7692.                   if (this._manager._overlays.length === 0) {
  7693.                     lastClose = this;
  7694.                     lastOpen = null;
  7695.                   } else {
  7696.                     return 1;
  7697.                   }
  7698.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  7699.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  7700.                   // cid = cid || setTimeout(__moChanged__, delay1);
  7701.                   cid = cid || requestAnimationFrame(__moChanged__);
  7702.                 }).then((r) => {
  7703.                   if (r) this.__mtChanged__(0);
  7704.                 }).catch(console.warn);
  7705.  
  7706.               }
  7707.  
  7708.             }
  7709.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  7710.  
  7711.           } else {
  7712.  
  7713.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  7714.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  7715.  
  7716.           }
  7717.  
  7718.  
  7719.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  7720.  
  7721.             cProto.__openedChanged82 = cProto.__openedChanged;
  7722.  
  7723.  
  7724.             cProto.__openedChanged = function () {
  7725.  
  7726.               // currentMenuPivotWR = null;
  7727.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  7728.  
  7729.  
  7730.  
  7731.               // if (this.opened && this.positionTarget) {
  7732.  
  7733.               //   const positionTarget = this.positionTarget;
  7734.               //   console.log(1480, '__openedChanged.B', positionTarget)
  7735.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  7736.  
  7737.               // }
  7738.  
  7739.               const positionTarget = this.positionTarget;
  7740.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  7741.               return this.__openedChanged82.apply(this, arguments);
  7742.             }
  7743.           }
  7744.  
  7745.  
  7746.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  7747.  
  7748.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  7749.  
  7750.           //   cProto.__onCaptureScroll = function(a){
  7751.  
  7752.           //     const q = true;
  7753.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  7754.  
  7755.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  7756.           //       async function af() {
  7757.           //         this.__isAnimating && this._finishRenderOpened();
  7758.           //         if (!this.opened) return;
  7759.           //         this.__restoreScrollPosition();
  7760.           //         await new Promise(r => requestAnimationFrame(r));
  7761.           //         if (!this.opened) return;
  7762.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7763.           //         if (!this.opened) return;
  7764.           //         this.__restoreScrollPosition();
  7765.           //         await new Promise(r => requestAnimationFrame(r));
  7766.           //         if (!this.opened) return;
  7767.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  7768.           //         if (!this.opened) return;
  7769.           //         this.opened && !this.__isAnimating && this.refit();
  7770.           //       }
  7771.           //       Promise.resolve().then(af);
  7772.  
  7773.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  7774.           //     }else{
  7775.  
  7776.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  7777.  
  7778.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  7779.           //     }
  7780.           //   }
  7781.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  7782.           // }else{
  7783.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  7784.  
  7785.           // }
  7786.  
  7787.  
  7788.         })();
  7789.  
  7790.         console.log("[End]");
  7791.  
  7792.         console.groupEnd();
  7793.  
  7794.       }).catch(console.warn);
  7795.  
  7796.  
  7797.  
  7798.  
  7799.  
  7800.  
  7801.  
  7802.  
  7803.       /*
  7804.  
  7805.  
  7806.  
  7807.  
  7808.  
  7809.           var FU = function() {
  7810.               var a = this;
  7811.               this.nextHandle_ = 1;
  7812.               this.clients_ = {};
  7813.               this.JSC$10323_callbacks_ = {};
  7814.               this.unsubscribeAsyncHandles_ = {};
  7815.               this.subscribe = vl(function(b, c, d) {
  7816.                   var e = Geb(b);
  7817.                   if (e in a.clients_)
  7818.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  7819.                   else {
  7820.                       a: {
  7821.                           var h = Geb(b), l;
  7822.                           for (l in a.unsubscribeAsyncHandles_) {
  7823.                               var m = a.clients_[l];
  7824.                               if (m instanceof KO) {
  7825.                                   delete a.clients_[l];
  7826.                                   delete a.JSC$10323_callbacks_[l];
  7827.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  7828.                                   delete a.unsubscribeAsyncHandles_[l];
  7829.                                   i6a(m);
  7830.                                   m.objectId_ = new FQa(h);
  7831.                                   m.register();
  7832.                                   d = m;
  7833.                                   break a
  7834.                               }
  7835.                           }
  7836.                           d.objectSource = b.invalidationId.objectSource;
  7837.                           d.objectId = h;
  7838.                           if (b = b.webAuthConfigurationData)
  7839.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  7840.                               b.pageId && (d.pageId = b.pageId);
  7841.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  7842.                           d.register()
  7843.                       }
  7844.                       a.clients_[e] = d;
  7845.                       a.JSC$10323_callbacks_[e] = {}
  7846.                   }
  7847.                   d = a.nextHandle_++;
  7848.                   a.JSC$10323_callbacks_[e][d] = c;
  7849.                   return d
  7850.               })
  7851.           };
  7852.           FU.prototype.unsubscribe = function(a, b) {
  7853.               var c = Geb(a);
  7854.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  7855.               !this.JSC$10323_callbacks_[c].length)) {
  7856.                   var d = this.clients_[c];
  7857.                   b = Jq.run(function() {
  7858.                       ei(d);
  7859.                       delete this.clients_[c];
  7860.                       delete this.unsubscribeAsyncHandles_[c]
  7861.                   }
  7862.                   .bind(this));
  7863.                   this.unsubscribeAsyncHandles_[c] = b
  7864.               }
  7865.           }
  7866.           ;
  7867.  
  7868.  
  7869.       */
  7870.  
  7871.  
  7872.  
  7873.  
  7874.       const onManagerFound = (dummyManager) => {
  7875.         if (!dummyManager || typeof dummyManager !== 'object') return;
  7876.  
  7877.         const mgrProto = dummyManager.constructor.prototype;
  7878.  
  7879.         let keyCallbackStore = '';
  7880.         for (const [key, v] of Object.entries(dummyManager)) {
  7881.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  7882.         }
  7883.  
  7884.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  7885.  
  7886.         if (mgrProto.unsubscribe16) return;
  7887.  
  7888.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  7889.  
  7890.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  7891.         console.log("[Begin]");
  7892.  
  7893.  
  7894.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  7895.         const isEmptyObject = ((obj) => (firstKey(obj) === null));
  7896.  
  7897.         const idMapper = new Map();
  7898.  
  7899.         const convertId = function (objectId) {
  7900.           if (!objectId || typeof objectId !== 'string') return null;
  7901.  
  7902.           let result = idMapper.get(objectId)
  7903.           if (result) return result;
  7904.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  7905.           idMapper.set(objectId, result)
  7906.           return result;
  7907.         }
  7908.  
  7909.  
  7910.         const rafHandleHolder = [];
  7911.  
  7912.         let pzw = 0;
  7913.         let lza = 0;
  7914.         const rafHandlerFn = () => {
  7915.           pzw = 0;
  7916.           if (rafHandleHolder.length === 1) {
  7917.             const f = rafHandleHolder[0];
  7918.             rafHandleHolder.length = 0;
  7919.             f();
  7920.           } else if (rafHandleHolder.length > 1) {
  7921.             const arr = rafHandleHolder.slice(0);
  7922.             rafHandleHolder.length = 0;
  7923.             for (const fn of arr) fn();
  7924.           }
  7925.         };
  7926.  
  7927.  
  7928.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  7929.  
  7930.           const checkIntegrityForSubscribe = (mgr) => {
  7931.             if (mgr
  7932.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  7933.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  7934.  
  7935.               const ns = new Set(Object.keys(mgr));
  7936.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  7937.  
  7938.               if (ns.size >= 6 && ms.size >= 4) {
  7939.                 // including 'subscribe18'
  7940.                 // 'unsubscribe16', 'subscribe19'
  7941.  
  7942.                 let r = 0;
  7943.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  7944.                   r += ns.has(k) ? 1 : 0;
  7945.                 }
  7946.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  7947.                   r += ms.has(k) ? 1 : 0;
  7948.                 }
  7949.                 if (r === 10) {
  7950.                   const isObject = (c) => (c || 0).constructor === Object;
  7951.  
  7952.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  7953.  
  7954.                     return true;
  7955.                   }
  7956.  
  7957.  
  7958.                 }
  7959.  
  7960.               }
  7961.  
  7962.  
  7963.             }
  7964.             return false;
  7965.           }
  7966.  
  7967.           mgrProto.subscribe19 = function (o, f, opts) {
  7968.  
  7969.             const ct_clients_ = this.clients_ || 0;
  7970.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  7971.  
  7972.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  7973.  
  7974.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7975.             if (!objectId) return this.subscribe18.apply(this, arguments);
  7976.             objectId = convertId(objectId);
  7977.  
  7978.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  7979.  
  7980.             if (ct_clients_[objectId]) {
  7981.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  7982.             }
  7983.  
  7984.             return this.subscribe18.apply(this, arguments);
  7985.           }
  7986.  
  7987.           mgrProto.unsubscribe = function (o, d) {
  7988.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  7989.               this.subscribe18 = this.subscribe;
  7990.               this.subscribe = this.subscribe19;
  7991.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  7992.             }
  7993.             const ct_clients_ = this.clients_;
  7994.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  7995.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  7996.  
  7997.             let objectId = ((o || 0).invalidationId || 0).objectId;
  7998.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  7999.  
  8000.             objectId = convertId(objectId);
  8001.  
  8002.  
  8003.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  8004.  
  8005.             const callbacks = this[keyCallbackStore] || 0;
  8006.             const callbackObj = callbacks[objectId] || 0;
  8007.  
  8008.  
  8009.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  8010.               const w = ct_clients_[objectId];
  8011.               --lza;
  8012.               if (lza < -1e9) lza = -1;
  8013.               const qta = lza;
  8014.               rafHandleHolder.push(() => {
  8015.                 if (qta === ct_handles_[objectId]) {
  8016.                   const o = {
  8017.                     callbacks, callbackObj,
  8018.                     client: ct_clients_[objectId],
  8019.                     handle: ct_handles_[objectId]
  8020.                   };
  8021.                   let p = 0;
  8022.                   try {
  8023.                     if (ct_clients_[objectId] === w) {
  8024.                       w && "function" === typeof w.dispose && w.dispose();
  8025.                       delete ct_clients_[objectId];
  8026.                       delete ct_handles_[objectId];
  8027.                       p = 1;
  8028.                     } else {
  8029.                       // w && "function" === typeof w.dispose && w.dispose();
  8030.                       // delete ct_clients_[objectId];
  8031.                       // delete ct_handles_[objectId];
  8032.                       p = 2;
  8033.                     }
  8034.                   } catch (e) {
  8035.                     console.warn(e);
  8036.                   }
  8037.                   console.log(`unsubscribed: ${p}`, this, o);
  8038.                 }
  8039.               });
  8040.               ct_handles_[objectId] = qta;
  8041.               if (pzw === 0) {
  8042.                 pzw = requestAnimationFrame(rafHandlerFn);
  8043.               }
  8044.             }
  8045.           }
  8046.  
  8047.  
  8048.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  8049.  
  8050.         } else {
  8051.  
  8052.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  8053.         }
  8054.  
  8055.         console.log("[End]");
  8056.  
  8057.         console.groupEnd();
  8058.  
  8059.       }
  8060.  
  8061.  
  8062.  
  8063.       /*
  8064.  
  8065.  
  8066.               a.prototype.async = function(e, h) {
  8067.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  8068.               }
  8069.               ;
  8070.               a.prototype.cancelAsync = function(e) {
  8071.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  8072.               }
  8073.  
  8074.       */
  8075.  
  8076.  
  8077.       (FASTER_ICON_RENDERING && Promise.all(
  8078.         [
  8079.           customElements.whenDefined("yt-icon-shape"),
  8080.           customElements.whenDefined("yt-icon")
  8081.           //  document.createElement('icon-shape'),
  8082.         ]
  8083.       )).then(() => {
  8084.         let cq = 0;
  8085.         let dummys = [document.createElement('yt-icon-shape'), document.createElement('yt-icon')]
  8086.         for (const dummy of dummys) {
  8087.           let cProto = getProto(dummy);
  8088.           if (cProto && typeof cProto.shouldRenderIconShape === 'function' && !cProto.shouldRenderIconShape571 && cProto.shouldRenderIconShape.length === 1) {
  8089.             assertor(() => fnIntegrity(cProto.shouldRenderIconShape, '1.70.38'));
  8090.             cq++;
  8091.             cProto.shouldRenderIconShape571 = cProto.shouldRenderIconShape;
  8092.             cProto.shouldRenderIconShape = function (a) {
  8093.               if (this.isAnimatedIcon) return this.shouldRenderIconShape571(a);
  8094.               if (!this.iconType || !this.iconShapeData) return this.shouldRenderIconShape571(a);
  8095.               if (!this.iconName) return this.shouldRenderIconShape571(a);
  8096.               return false;
  8097.               // console.log(1051, this.iconType)
  8098.               // console.log(1052, this.iconShapeData)
  8099.               // console.log(1053, this.isAnimatedIcon)
  8100.             }
  8101.           }
  8102.           // if(cProto && cProto.switchTemplateAtRegistration){
  8103.           //   cProto.switchTemplateAtRegistration = false;
  8104.           // }
  8105.         }
  8106.         if (cq === 1) {
  8107.           console.log("modified shouldRenderIconShape - Y")
  8108.         } else {
  8109.           console.log("modified shouldRenderIconShape - N", cq)
  8110.         }
  8111.       });
  8112.  
  8113.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  8114.  
  8115.         let __dummyManager__ = null;
  8116.  
  8117.         mightFirstCheckOnYtInit();
  8118.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  8119.         console.log("[Begin]");
  8120.         (() => {
  8121.  
  8122.           const tag = "yt-invalidation-continuation"
  8123.           const dummy = document.createElement(tag);
  8124.  
  8125.           const cProto = getProto(dummy);
  8126.           if (!cProto || !cProto.attached) {
  8127.             console.warn(`proto.attached for ${tag} is unavailable.`);
  8128.             return;
  8129.           }
  8130.  
  8131.           const dummyManager = insp(dummy).manager_ || 0;
  8132.           __dummyManager__ = dummyManager;
  8133.  
  8134.           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) {
  8135.  
  8136.  
  8137.             const rafHub = new RAFHub();
  8138.  
  8139.             rafHub.keepRAF = true;
  8140.             cProto.async71 = cProto.async;
  8141.             cProto.cancelAsync71 = cProto.cancelAsync;
  8142.  
  8143.             // mostly for subscription timeoutMs 10000ms
  8144.             let mcw = 1; // 1, 3, 5, ...
  8145.             let arr = new Map();
  8146.  
  8147.             let __asyncInited__ = 0;
  8148.             let __timeoutStartId__ = null;
  8149.             const __asyncInit__ = () => {
  8150.  
  8151.               if (__asyncInited__) return;
  8152.               __asyncInited__ = 1;
  8153.  
  8154.               __timeoutStartId__ = setTimeout(() => { });
  8155.               mcw = __timeoutStartId__ * 2 + 1;
  8156.  
  8157.               setInterval(() => {
  8158.  
  8159.                 if (!arr.length) return;
  8160.  
  8161.                 const p = Date.now();
  8162.                 let deleteKeys = [];
  8163.                 arr.forEach((entry, key) => {
  8164.  
  8165.  
  8166.                   if (entry.cid === -1) {
  8167.                     entry.cid = -2;
  8168.                   } else if (entry.cid === -2) {
  8169.  
  8170.                     let offset = p - entry.add
  8171.                     if (offset < 0) offset = 0;
  8172.                     let delay2 = entry.delay - offset;
  8173.                     if (delay2 < 0) delay2 = 0;
  8174.                     entry.cid = setTimeout(entry.q(), delay2);
  8175.                     entry.q = null;
  8176.  
  8177.                   } else if (entry.add + entry.delay < p) {
  8178.                     deleteKeys.push(key);
  8179.  
  8180.                   }
  8181.  
  8182.                 })
  8183.  
  8184.                 for (const key of deleteKeys) arr.delete(key);
  8185.  
  8186.               }, 2000)
  8187.  
  8188.             }
  8189.  
  8190.  
  8191.  
  8192.  
  8193.             cProto.async = function (e, h) {
  8194.  
  8195.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  8196.  
  8197.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  8198.  
  8199.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  8200.  
  8201.  
  8202.               if (!this.__asyncInited__) {
  8203.                 this.__asyncInited__ = 1;
  8204.                 __asyncInit__();
  8205.               }
  8206.               mcw += 2; // 2K+3, 2K+4, ...
  8207.               if (mcw > 1e9) mcw = mcw % 1e4;
  8208.               const cid = mcw;
  8209.               const q = () => {
  8210.                 return () => {
  8211.                   console.log('async h > 8000');
  8212.                   e.call(this);
  8213.                 }
  8214.               }
  8215.               // setTimeout(q, delay)
  8216.               arr.set(cid, {
  8217.                 cid: -1, // -1 -> -2 -> cid
  8218.                 add: Date.now(),
  8219.                 q,
  8220.                 delay: h
  8221.               });
  8222.               // console.log('cid-async', cid)
  8223.               return cid;
  8224.  
  8225.             }
  8226.  
  8227.  
  8228.             cProto.cancelAsync = function (e) {
  8229.  
  8230.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  8231.  
  8232.               // console.log('cid-unasync', e)
  8233.  
  8234.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  8235.  
  8236.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  8237.  
  8238.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  8239.  
  8240.                 if (!arr.has(e)) return; // duplciated cancel
  8241.  
  8242.                 const entry = arr.get(e);
  8243.                 if (entry.cid < 0) {
  8244.                   entry.cid = 0;
  8245.                   arr.delete(e);
  8246.                 } else {
  8247.                   clearTimeout(entry.cid); // cid >= 1
  8248.                   entry.cid = 0;
  8249.                   arr.delete(e);
  8250.                 }
  8251.  
  8252.               } else {
  8253.  
  8254.                 return this.cancelAsync71(e);
  8255.  
  8256.               }
  8257.  
  8258.             }
  8259.  
  8260.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  8261.  
  8262.           } else {
  8263.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  8264.  
  8265.           }
  8266.  
  8267.         })();
  8268.  
  8269.         console.log("[End]");
  8270.  
  8271.         console.groupEnd();
  8272.  
  8273.  
  8274.  
  8275.         onManagerFound(__dummyManager__);
  8276.  
  8277.       }).catch(console.warn);
  8278.  
  8279.  
  8280.  
  8281.  
  8282.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  8283.  
  8284.  
  8285.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  8286.  
  8287.  
  8288.           mightFirstCheckOnYtInit();
  8289.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  8290.           console.log("[Begin]");
  8291.           (() => {
  8292.  
  8293.             const tag = "yt-live-interactivity-component-background"
  8294.             const dummy = document.createElement(tag);
  8295.  
  8296.             const cProto = getProto(dummy);
  8297.             if (!cProto || !cProto.attached) {
  8298.               console.warn(`proto.attached for ${tag} is unavailable.`);
  8299.               return;
  8300.             }
  8301.  
  8302.  
  8303.             cProto.__toStopAfterRun__ = function (hostElement) {
  8304.               let mo = new MutationObserver(() => {
  8305.                 mo.disconnect();
  8306.                 mo.takeRecords();
  8307.                 mo = null;
  8308.                 this.lottieAnimation && this.lottieAnimation.stop(); // primary
  8309.                 foregroundPromiseFn().then(() => { // if the lottieAnimation is started with rAf triggering
  8310.                   this.lottieAnimation && this.lottieAnimation.stop(); // fallback
  8311.                 });
  8312.               });
  8313.               mo.observe(hostElement, { subtree: true, childList: true });
  8314.             }
  8315.  
  8316.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  8317.  
  8318.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  8319.               cProto.maybeLoadAnimationBackground = function () {
  8320.                 let toRun = true;
  8321.                 let stopAfterRun = false;
  8322.                 if (!this.__bypassDisableAnimationBackground__) {
  8323.                   let doFix = false;
  8324.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  8325.                     if (!this.lottieAnimation) {
  8326.                       doFix = true;
  8327.                     }
  8328.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  8329.                     doFix = true;
  8330.                   }
  8331.                   if (doFix) {
  8332.                     if (this.useAnimationBackground === true) {
  8333.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  8334.                     }
  8335.                     toRun = true;
  8336.                     stopAfterRun = true;
  8337.                   }
  8338.                 }
  8339.                 if (toRun) {
  8340.                   if (stopAfterRun && (this.hostElement instanceof HTMLElement)) {
  8341.                     this.__toStopAfterRun__(this.hostElement); // primary
  8342.                   }
  8343.                   const r = this.maybeLoadAnimationBackground77.apply(this, arguments);
  8344.                   if (stopAfterRun && this.lottieAnimation) {
  8345.                     this.lottieAnimation.stop(); // fallback if no mutation
  8346.                   }
  8347.                   return r;
  8348.                 }
  8349.               }
  8350.  
  8351.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  8352.  
  8353.             } else {
  8354.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  8355.  
  8356.             }
  8357.  
  8358.           })();
  8359.  
  8360.           console.log("[End]");
  8361.  
  8362.           console.groupEnd();
  8363.  
  8364.  
  8365.         }).catch(console.warn);
  8366.  
  8367.       }
  8368.  
  8369.  
  8370.       if (DELAY_FOCUSEDCHANGED) {
  8371.  
  8372.         customElements.whenDefined("yt-live-chat-text-input-field-renderer").then(() => {
  8373.  
  8374.  
  8375.           mightFirstCheckOnYtInit();
  8376.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-text-input-field-renderer hacks");
  8377.           console.log("[Begin]");
  8378.           (() => {
  8379.  
  8380.             const tag = "yt-live-chat-text-input-field-renderer"
  8381.             const dummy = document.createElement(tag);
  8382.  
  8383.             const cProto = getProto(dummy);
  8384.             if (!cProto || !cProto.attached) {
  8385.               console.warn(`proto.attached for ${tag} is unavailable.`);
  8386.               return;
  8387.             }
  8388.  
  8389.             if (DELAY_FOCUSEDCHANGED && typeof cProto.focusedChanged === 'function' && cProto.focusedChanged.length === 0 && !cProto.focusedChanged372) {
  8390.               cProto.focusedChanged372 = cProto.focusedChanged;
  8391.               cProto.focusedChanged = function () {
  8392.                 Promise.resolve().then(() => {
  8393.                   if (this.isAttached === true) this.focusedChanged372();
  8394.                 });
  8395.               }
  8396.             }
  8397.  
  8398.           })();
  8399.  
  8400.           console.log("[End]");
  8401.  
  8402.           console.groupEnd();
  8403.  
  8404.         });
  8405.  
  8406.       }
  8407.  
  8408.  
  8409.     }
  8410.  
  8411.  
  8412.  
  8413.  
  8414.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  8415.  
  8416.     const fixJsonParse = () => {
  8417.  
  8418.       let p1 = window.onerror;
  8419.  
  8420.       try {
  8421.         JSON.parse("{}");
  8422.       } catch (e) {
  8423.         console.warn(e);
  8424.       }
  8425.  
  8426.       let p2 = window.onerror;
  8427.  
  8428.       if (p1 !== p2) {
  8429.  
  8430.  
  8431.         console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | JS Engine Issue Found"}`,
  8432.           "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  8433.           "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  8434.         );
  8435.  
  8436.         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");
  8437.  
  8438.         console.groupEnd();
  8439.  
  8440.       }
  8441.  
  8442.     }
  8443.  
  8444.     if (CHECK_JSONPRUNE) {
  8445.       promiseForCustomYtElementsReady.then(fixJsonParse);
  8446.     }
  8447.  
  8448.   });
  8449.  
  8450.  
  8451.  
  8452. })({ IntersectionObserver });