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YouTube 超快聊天

YouTube直播聊天的终极性能提升

目前为 2023-08-28 提交的版本。查看 最新版本。

  1. // ==UserScript==
  2. // @name                YouTube Super Fast Chat
  3. // @version             0.53.2
  4. // @license             MIT
  5. // @name:ja             YouTube スーパーファーストチャット
  6. // @name:zh-TW          YouTube 超快聊天
  7. // @name:zh-CN          YouTube 超快聊天
  8. // @icon                https://github.com/cyfung1031/userscript-supports/raw/main/icons/super-fast-chat.png
  9. // @namespace           UserScript
  10. // @match               https://www.youtube.com/live_chat*
  11. // @match               https://www.youtube.com/live_chat_replay*
  12. // @author              CY Fung
  13. // @run-at              document-start
  14. // @grant               none
  15. // @unwrap
  16. // @allFrames           true
  17. // @inject-into         page
  18. //
  19. // @compatible          firefox Violentmonkey
  20. // @compatible          firefox Tampermonkey
  21. // @compatible          firefox FireMonkey
  22. // @compatible          chrome Violentmonkey
  23. // @compatible          chrome Tampermonkey
  24. // @compatible          opera Violentmonkey
  25. // @compatible          opera Tampermonkey
  26. // @compatible          safari Stay
  27. // @compatible          edge Violentmonkey
  28. // @compatible          edge Tampermonkey
  29. // @compatible          brave Violentmonkey
  30. // @compatible          brave Tampermonkey
  31. //
  32. // @description         Ultimate Performance Boost for YouTube Live Chats
  33. // @description:ja      YouTubeのライブチャットの究極のパフォーマンスブースト
  34. // @description:zh-TW   YouTube直播聊天的終極性能提升
  35. // @description:zh-CN   YouTube直播聊天的终极性能提升
  36. //
  37. // ==/UserScript==
  38.  
  39. ((__CONTEXT__) => {
  40.   'use strict';
  41.  
  42.   const ENABLE_REDUCED_MAXITEMS_FOR_FLUSH = true;         // TRUE to enable trimming down to MAX_ITEMS_FOR_FULL_FLUSH (25) messages when there are too many unrendered messages
  43.   const MAX_ITEMS_FOR_TOTAL_DISPLAY = 90;                 // By default, 250 latest messages will be displayed, but displaying MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages is already sufficient.
  44.   const MAX_ITEMS_FOR_FULL_FLUSH = 25;                    // If there are too many new (stacked) messages not yet rendered, clean all and flush MAX_ITEMS_FOR_FULL_FLUSH (25) latest messages then incrementally added back to MAX_ITEMS_FOR_TOTAL_DISPLAY (90) messages
  45.  
  46.   const ENABLE_NO_SMOOTH_TRANSFORM = true;                // Depends on whether you want the animation effect for new chat messages
  47.   const USE_OPTIMIZED_ON_SCROLL_ITEMS = true;             // TRUE for the majority
  48.   const USE_WILL_CHANGE_CONTROLLER = false;               // FALSE for the majority
  49.   const ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED = true;  // In Chrome, the rendering of new chat messages could be too fast for no smooth transform. 80ms delay of displaying new messages should be sufficient for element rendering.
  50.   const ENABLE_OVERFLOW_ANCHOR_PREFERRED = true;          // Enable `overflow-anchor: auto` to lock the scroll list at the bottom for no smooth transform.
  51.  
  52.   const FIX_SHOW_MORE_BUTTON_LOCATION = true;             // When there are voting options (bottom panel), move the "show more" button to the top.
  53.   const FIX_INPUT_PANEL_OVERFLOW_ISSUE = true;            // When the super chat button is flicking with color, the scrollbar might come out.
  54.   const FIX_INPUT_PANEL_BORDER_ISSUE = true;              // No border should be allowed if there is an empty input panel.
  55.   const SET_CONTAIN_FOR_CHATROOM = true;                  // Rendering hacks (`contain`) for chatroom elements. [ General ]
  56.  
  57.   const FORCE_CONTENT_VISIBILITY_UNSET = true;            // Content-visibility should be always VISIBLE for high performance and great rendering.
  58.   const FORCE_WILL_CHANGE_UNSET = true;                   // Will-change should be always UNSET (auto) for high performance and low energy impact.
  59.  
  60.   // Replace requestAnimationFrame timers with custom implementation
  61.   const ENABLE_RAF_HACK_TICKERS = true;           // When there is a ticker
  62.   const ENABLE_RAF_HACK_DOCKED_MESSAGE = true;    // To be confirmed
  63.   const ENABLE_RAF_HACK_INPUT_RENDERER = true;    // To be confirmed
  64.   const ENABLE_RAF_HACK_EMOJI_PICKER = true;      // When changing the page of the emoji picker
  65.  
  66.   // Force rendering all the character subsets of the designated font(s) before messages come (Pre-Rendering of Text)
  67.   const ENABLE_FONT_PRE_RENDERING_PREFERRED = 1 | 2 | 4 | 8 | 16;
  68.  
  69.   // Backdrop `filter: blur(4px)` inside the iframe can extend to the whole page, causing a negative visual impact on the video you are watching.
  70.   const NO_BACKDROP_FILTER_WHEN_MENU_SHOWN = true;
  71.  
  72.   // Data Manipulation for Participants (Participant List)
  73.   // << if DO_PARTICIPANT_LIST_HACKS >>
  74.   const DO_PARTICIPANT_LIST_HACKS = true;                     // TRUE for the majority
  75.   const SHOW_PARTICIPANT_CHANGES_IN_CONSOLE = false;          // Just too annoying to show them all in popular chat
  76.   const CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = true;  // Only consider changes in renderable content (not concerned with the last chat message of the participants)
  77.   const PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED = true;
  78.   // << end >>
  79.  
  80.   // show more button
  81.   const ENABLE_SHOW_MORE_BLINKER = true;                      // BLINK WHEN NEW MESSAGES COME
  82.  
  83.   // faster stampDomArray_ for participants list creation
  84.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL = 1;            // 0 - OFF; 1 - ON; 2 - ON(PARTICIPANTS_LIST ONLY)
  85.   const USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET = false;
  86.  
  87.   // reuse yt components
  88.   const ENABLE_FLAGS_REUSE_COMPONENTS = true;
  89.  
  90.   // images <Group#I01>
  91.   const AUTHOR_PHOTO_SINGLE_THUMBNAIL = 1;  // 0 - disable; 1- smallest; 2- largest
  92.   const EMOJI_IMAGE_SINGLE_THUMBNAIL = 1;   // 0 - disable; 1- smallest; 2- largest
  93.   const LEAST_IMAGE_SIZE = 48;              // minium size = 48px
  94.  
  95.   const DO_LINK_PREFETCH = true;                      // DO NOT CHANGE
  96.   // << if DO_LINK_PREFETCH >>
  97.   const ENABLE_BASE_PREFETCHING = true;               // (SUB-)DOMAIN | dns-prefetch & preconnect
  98.   const ENABLE_PRELOAD_THUMBNAIL = true;              // subresource (prefetch) [LINK for Images]
  99.   const PREFETCH_LIMITED_SIZE_EMOJI = 512;            // DO NOT CHANGE THIS
  100.   const PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO = 68;      // DO NOT CHANGE THIS
  101.   // << end >>
  102.  
  103.   const FIX_SETSRC_AND_THUMBNAILCHANGE_ = true;       // Function Replacement for yt-img-shadow....
  104.   const FIX_THUMBNAIL_DATACHANGED = true;             // Function Replacement for yt-live-chat-author-badge-renderer..dataChanged
  105.   // const REMOVE_PRELOADAVATARFORADDACTION = false;      // Function Replacement for yt-live-chat-renderer..preloadAvatarForAddAction
  106.  
  107.   const FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION = true;     // important [depends on <Group#I01>]
  108.   const FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT = true;  // [depends on <Group#I01>]
  109.  
  110.   const ATTEMPT_ANIMATED_TICKER_BACKGROUND = 'steps'   // false OR '' for disabled, 'linear', 'steps' for easing-function
  111.   // << if ATTEMPT_ANIMATED_TICKER_BACKGROUND >>
  112.   // BROWSER SUPPORT: Chrome 75+, Edge 79+, Safari 13.1+, Firefox 63+, Opera 62+
  113.   const TICKER_MAX_STEPS_LIMIT = 500;                       //  NOT LESS THAN 5 STEPS!!
  114.   // [limiting 500 max steps] is recommended for "confortable visual change"
  115.   //      min. step increment 0.2% => max steps: 500 =>  800ms per each update
  116.   //      min. step increment 0.5% => max steps: 200 => 1000ms per each update
  117.   //      min. step increment 1.0% => max steps: 100 => 1000ms per each update
  118.   //      min. step increment 2.5% => max steps:  40 => 1000ms per each update
  119.   //      min. step increment 5.0% => max steps:  20 => 1250ms per each update
  120.   const ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX = true;    // for video playback's ticker issue. [ Playback Replay - Pause at Middle - Backwards Seeking ]
  121.   // << end >>
  122.  
  123.   const FIX_TOOLTIP_DISPLAY = true;
  124.   const USE_VANILLA_DEREF = true;
  125.   const FIX_DROPDOWN_DERAF = true;                        // DONT CHANGE
  126.  
  127.  
  128.   const CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true;        // cache the menu data and used for the next reopen
  129.   const ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU = true; // pause auto scroll faster when the context menu is about to show
  130.   const ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU = true;        // avoid multiple requests on the same time
  131.  
  132.   const BOOST_MENU_OPENCHANGED_RENDERING = true;
  133.   const FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK = true;  // click again = close
  134.   const PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN = true; // require CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN = true
  135.   // const FIX_MENU_CAPTURE_SCROLL = true;
  136.   const CHAT_MENU_REFIT_ALONG_SCROLLING = 0;        // 0 for locking / default; 1 for unlocking only; 2 for unlocking and refit
  137.  
  138.   const RAF_FIX_keepScrollClamped = true;
  139.   const RAF_FIX_scrollIncrementally = 2;            // 0: no action; 1: basic fix; 2: also fix scroll position
  140.  
  141.   // << if BOOST_MENU_OPENCHANGED_RENDERING >>
  142.   const FIX_MENU_POSITION_N_SIZING_ON_SHOWN = 1;       // correct size and position when the menu dropdown opens
  143.  
  144.   const DE_JSONPRUNE_FOR_readyStateChangeHandler_ = 1; // jsonPrune for Ad-Blocking is not applicable to live_chat streaming
  145.   // << end >>
  146.  
  147.   // const LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY = false;
  148.  
  149.   const CHANGE_DATA_FLUSH_ASYNC = true;
  150.   const CHANGE_MANAGER_UNSUBSCRIBE = true;
  151.  
  152.   const INTERACTIVITY_BACKGROUND_ANIMATION = 1;         // mostly for pinned message
  153.   // 0 = default Yt animation background [= no fix]; 
  154.   // 1 = disable default animation background [= keep special animation]; 
  155.   // 2 = disable all animation backgrounds [= no animation backbround]
  156.  
  157.   const CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED = true;
  158.  
  159.   // ========= EXPLANTION FOR 0.2% @ step timing [min. 0.2%] ===========
  160.   /*
  161.  
  162.     ### Time Approach
  163.  
  164.     // all below values can make the time interval > 250ms
  165.     // 250ms (practical value) refers to the minimum frequency for timeupdate in most browsers (typically, shorter timeupdate interval in modern browsers)
  166.     if (totalDuration > 400000) stepInterval = 0.2;  // 400000ms with 0.2% increment => 800ms
  167.     else if (totalDuration > 200000) stepInterval = 0.5; // 200000ms with 0.5% increment => 1000ms
  168.     else if (totalDuration > 100000) stepInterval = 1; // 100000ms with 1% increment => 1000ms
  169.     else if (totalDuration > 50000) stepInterval = 2; // 50000ms with 2% increment => 1000ms
  170.     else if (totalDuration > 25000) stepInterval = 5; // 25000ms with 5% increment => 1250ms
  171.  
  172.     ### Pixel Check
  173.     // Target Max Pixel Increment < 5px for Short Period Ticker (Rapid Background Change)
  174.     // Assume total width <= 99px for short period ticker, like small donation & member welcome
  175.     99px * 5% = 4.95px < 5px [Condition Fulfilled]
  176.  
  177.     ### Example - totalDuration = 280000
  178.     totalDuration 280000
  179.     stepInterval 0.5
  180.     numOfSteps = Math.round(100 / stepInterval) = 200
  181.     time interval = 280000 / 200 = 1400ms <acceptable>
  182.  
  183.     ### Example - totalDuration = 18000
  184.     totalDuration 18000
  185.     stepInterval 5
  186.     numOfSteps = Math.round(100 / stepInterval) = 20
  187.     time interval = 18000 / 20 = 900ms <acceptable>
  188.  
  189.     ### Example - totalDuration = 5000
  190.     totalDuration 5000
  191.     stepInterval 5
  192.     numOfSteps = Math.round(100 / stepInterval) = 20
  193.     time interval = 5000 / 20 = 250ms <threshold value>
  194.  
  195.     ### Example - totalDuration = 3600
  196.     totalDuration 3600
  197.     stepInterval 5
  198.     numOfSteps = Math.round(100 / stepInterval) = 20
  199.     time interval = 3600 / 20 = 180ms <reasonable for 3600ms ticker>
  200.  
  201.   */
  202.  
  203.   // =======================================================================================================
  204.  
  205.   // AUTOMAICALLY DETERMINED
  206.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL === 1;
  207.   const ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST = ENABLE_FLAGS_MAINTAIN_STABLE_LIST_VAL >= 1;
  208.   const CHAT_MENU_SCROLL_UNLOCKING = CHAT_MENU_REFIT_ALONG_SCROLLING >= 1;
  209.   let runTickerClassName = 'run-ticker';
  210.  
  211.   const dummyImgURL = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
  212.   /*
  213.     WebP: data:image/webp;base64,UklGRjAB
  214.     PNG: data:image/png;base64,iVBORw0KGg==
  215.     JPEG: data:image/jpeg;base64,/9j/4AA=
  216.     GIF: data:image/gif;base64,R0lGODlhAQABAIA=
  217.     BMP: data:image/bmp;base64,Qk1oAAAA
  218.     SVG: data:image/svg+xml;base64,PHN2Zy8+Cg==
  219.  
  220.     WebP: data:image/webp;base64,AAAAAAA=
  221.     PNG:  data:image/png;base64,AAAAAAA=
  222.     JPEG: data:image/jpeg;base64,AAAAAAA=
  223.     GIF:  data:image/gif;base64,AAAAAAA=
  224.     BMP:  data:image/bmp;base64,AAAAAAA=
  225.  
  226.     data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
  227.  
  228.  
  229.   */
  230.  
  231.   // image sizing code
  232.   // (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null)
  233.  
  234.  
  235.   //   function KC(a, b, c, d) {
  236.   //     d = void 0 === d ? "width" : d;
  237.   //     if (!a || !a.length)
  238.   //         return null;
  239.   //     if (z("kevlar_tuner_should_always_use_device_pixel_ratio")) {
  240.   //         var e = window.devicePixelRatio;
  241.   //         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"));
  242.   //         HC = e
  243.   //     } else
  244.   //         HC || (HC = window.devicePixelRatio);
  245.   //     e = HC;
  246.   //     z("kevlar_tuner_should_always_use_device_pixel_ratio") ? b *= e : 1 < e && (b *= e);
  247.   //     if (z("kevlar_tuner_min_thumbnail_quality"))
  248.   //         return a[0].url || null;
  249.   //     e = a.length;
  250.   //     if (z("kevlar_tuner_max_thumbnail_quality"))
  251.   //         return a[e - 1].url || null;
  252.   //     if (c)
  253.   //         for (var h = 0; h < e; h++)
  254.   //             if (0 <= a[h].url.indexOf(c))
  255.   //                 return a[h].url || null;
  256.   //     for (c = 0; c < e; c++)
  257.   //         if (a[c][d] >= b)
  258.   //             return a[c].url || null;
  259.   //     for (b = e - 1; 0 < b; b--)
  260.   //         if (a[b][d])
  261.   //             return a[b].url || null;
  262.   //     return a[0].url || null
  263.   // }
  264.  
  265.   const { IntersectionObserver } = __CONTEXT__;
  266.  
  267.   /** @type {globalThis.PromiseConstructor} */
  268.   const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve.
  269.  
  270.   let jsonParseFix = null;
  271.  
  272.   if (!IntersectionObserver) return console.warn("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.");
  273.   if (typeof WebAssembly !== 'object') return console.warn("Your browser is too old.\nPlease upgrade to the latest version."); // for passive and once
  274.  
  275.   // necessity of cssText3_smooth_transform_position to be checked.
  276.   const cssText3_smooth_transform_position = ENABLE_NO_SMOOTH_TRANSFORM ? `
  277.  
  278.     #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer {
  279.         position: static !important;
  280.     }
  281.  
  282.   `: '';
  283.  
  284.   // fallback if dummy style fn fails
  285.   const cssText4_smooth_transform_forced_props = ENABLE_NO_SMOOTH_TRANSFORM ? `
  286.  
  287.     /* optional */
  288.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  289.         height: auto !important;
  290.         min-height: unset !important;
  291.     }
  292.  
  293.     #items.style-scope.yt-live-chat-item-list-renderer {
  294.         transform: translateY(0px) !important;
  295.     }
  296.  
  297.     /* optional */
  298.  
  299.   `: '';
  300.  
  301.   const cssText5 = SET_CONTAIN_FOR_CHATROOM ? `
  302.  
  303.     /* ------------------------------------------------------------------------------------------------------------- */
  304.  
  305.     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 {
  306.         contain: layout style;
  307.     }
  308.  
  309.     #items.style-scope.yt-live-chat-item-list-renderer {
  310.         contain: layout paint style;
  311.     }
  312.  
  313.     #item-offset.style-scope.yt-live-chat-item-list-renderer {
  314.         contain: style;
  315.     }
  316.  
  317.     #item-scroller.style-scope.yt-live-chat-item-list-renderer {
  318.         contain: size style;
  319.     }
  320.  
  321.     #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] {
  322.         contain: size layout paint style;
  323.     }
  324.  
  325.     .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container {
  326.         contain: layout paint style;
  327.     }
  328.  
  329.     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 {
  330.         contain: layout style;
  331.     }
  332.  
  333.     tp-yt-paper-tooltip[style*="inset"][role="tooltip"] {
  334.         contain: layout paint style;
  335.     }
  336.  
  337.     /* ------------------------------------------------------------------------------------------------------------- */
  338.  
  339.   ` : '';
  340.  
  341.   const cssText6b_show_more_button = FIX_SHOW_MORE_BUTTON_LOCATION ? `
  342.  
  343.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{
  344.         top: 4px;
  345.         transition-property: top;
  346.         bottom: unset;
  347.     }
  348.  
  349.     yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{
  350.         top: -42px;
  351.     }
  352.  
  353.   `: '';
  354.  
  355.   const cssText6c_input_panel_overflow = FIX_INPUT_PANEL_OVERFLOW_ISSUE ? `
  356.  
  357.     #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker {
  358.         contain: layout style;
  359.     }
  360.  
  361.     #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer {
  362.         overflow: visible;
  363.     }
  364.  
  365.   `: '';
  366.  
  367.   const cssText6d_input_panel_border = FIX_INPUT_PANEL_BORDER_ISSUE ? `
  368.  
  369.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) {
  370.         --yt-live-chat-action-panel-top-border: none;
  371.     }
  372.  
  373.     html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child {
  374.         border-top: 1px solid var(--yt-live-chat-panel-pages-border-color);
  375.     }
  376.  
  377.     html #panel-pages.yt-live-chat-renderer {
  378.         border-top: 0;
  379.         border-bottom: 0;
  380.     }
  381.  
  382.   `: '';
  383.  
  384.   const cssText7b_content_visibility_unset = FORCE_CONTENT_VISIBILITY_UNSET ? `
  385.  
  386.     img,
  387.     yt-img-shadow[height][width],
  388.     yt-img-shadow {
  389.         content-visibility: visible !important;
  390.     }
  391.  
  392.   `  : '';
  393.  
  394.   const cssText7c_will_change_unset = FORCE_WILL_CHANGE_UNSET ? `
  395.  
  396.     /* remove YouTube constant will-change */
  397.     /* constant value will slow down the performance; default auto */
  398.  
  399.     /* www-player.css */
  400.     html .ytp-contextmenu,
  401.     html .ytp-settings-menu {
  402.         will-change: unset;
  403.     }
  404.  
  405.     /* frequently matched elements */
  406.     html .fill.yt-interaction,
  407.     html .stroke.yt-interaction,
  408.     html .yt-spec-touch-feedback-shape__fill,
  409.     html .yt-spec-touch-feedback-shape__stroke {
  410.         will-change: unset;
  411.     }
  412.  
  413.     /* live_chat_polymer.js */
  414.     /*
  415.     html .toggle-button.tp-yt-paper-toggle-button,
  416.     html #primaryProgress.tp-yt-paper-progress,
  417.     html #secondaryProgress.tp-yt-paper-progress,
  418.     html #onRadio.tp-yt-paper-radio-button,
  419.     html .fill.yt-interaction,
  420.     html .stroke.yt-interaction,
  421.     html .yt-spec-touch-feedback-shape__fill,
  422.     html .yt-spec-touch-feedback-shape__stroke {
  423.         will-change: unset;
  424.     }
  425.     */
  426.  
  427.     /* desktop_polymer_enable_wil_icons.js */
  428.     /* html .fill.yt-interaction,
  429.     html .stroke.yt-interaction, */
  430.     html tp-yt-app-header::before,
  431.     html tp-yt-iron-list,
  432.     html #items.tp-yt-iron-list > *,
  433.     html #onRadio.tp-yt-paper-radio-button,
  434.     html .toggle-button.tp-yt-paper-toggle-button,
  435.     html ytd-thumbnail-overlay-toggle-button-renderer[use-expandable-tooltip] #label.ytd-thumbnail-overlay-toggle-button-renderer,
  436.     html #items.ytd-post-multi-image-renderer,
  437.     html #items.ytd-horizontal-card-list-renderer,
  438.     html #items.yt-horizontal-list-renderer,
  439.     html #left-arrow.yt-horizontal-list-renderer,
  440.     html #right-arrow.yt-horizontal-list-renderer,
  441.     html #items.ytd-video-description-infocards-section-renderer,
  442.     html #items.ytd-video-description-music-section-renderer,
  443.     html #chips.ytd-feed-filter-chip-bar-renderer,
  444.     html #chips.yt-chip-cloud-renderer,
  445.     html #items.ytd-merch-shelf-renderer,
  446.     html #items.ytd-product-details-image-carousel-renderer,
  447.     html ytd-video-preview,
  448.     html #player-container.ytd-video-preview,
  449.     html #primaryProgress.tp-yt-paper-progress,
  450.     html #secondaryProgress.tp-yt-paper-progress,
  451.     html ytd-miniplayer[enabled] /* ,
  452.     html .yt-spec-touch-feedback-shape__fill,
  453.     html .yt-spec-touch-feedback-shape__stroke */ {
  454.         will-change: unset;
  455.     }
  456.  
  457.     /* other */
  458.     .ytp-videowall-still-info-content[class],
  459.     .ytp-suggestion-image[class] {
  460.         will-change: unset !important;
  461.     }
  462.  
  463.   ` : '';
  464.  
  465.   const ENABLE_FONT_PRE_RENDERING = typeof HTMLElement.prototype.append === 'function' ? (ENABLE_FONT_PRE_RENDERING_PREFERRED || 0) : 0;
  466.   const cssText8_fonts_pre_render = ENABLE_FONT_PRE_RENDERING ? `
  467.  
  468.     elzm-fonts {
  469.         visibility: collapse;
  470.         position: fixed;
  471.         top: -10px;
  472.         left: -10px;
  473.         font-size: 10pt;
  474.         line-height: 100%;
  475.         width: 100px;
  476.         height: 100px;
  477.         transform: scale(0.1);
  478.         transform: scale(0.01);
  479.         transform: scale(0.001);
  480.         transform-origin: 0 0;
  481.         contain: strict;
  482.         display: block;
  483.  
  484.         pointer-events: none !important;
  485.         user-select: none !important;
  486.     }
  487.  
  488.     elzm-fonts[id]#elzm-fonts-yk75g {
  489.         user-select: none !important;
  490.         pointer-events: none !important;
  491.     }
  492.  
  493.     elzm-font {
  494.         visibility: collapse;
  495.         position: absolute;
  496.         line-height: 100%;
  497.         width: 100px;
  498.         height: 100px;
  499.         contain: strict;
  500.         display: block;
  501.  
  502.         user-select: none !important;
  503.         pointer-events: none !important;
  504.     }
  505.  
  506.     elzm-font::before {
  507.         visibility: collapse;
  508.         position: absolute;
  509.         line-height: 100%;
  510.         width: 100px;
  511.         height: 100px;
  512.         contain: strict;
  513.         display: block;
  514.  
  515.         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';
  516.  
  517.         user-select: none !important;
  518.         pointer-events: none !important;
  519.     }
  520.  
  521.   `: '';
  522.  
  523.   const cssText9_no_backdrop_filter_when_menu_shown = NO_BACKDROP_FILTER_WHEN_MENU_SHOWN ? `
  524.     tp-yt-iron-dropdown.yt-live-chat-app ytd-menu-popup-renderer  {
  525.         -webkit-backdrop-filter: none;
  526.         backdrop-filter: none;
  527.     }
  528.   `: '';
  529.  
  530.   const cssText10_show_more_blinker = ENABLE_SHOW_MORE_BLINKER ? `
  531.  
  532.     @keyframes blinker-miuzp {
  533.         0%, 60%, 100% {
  534.             opacity: 1;
  535.         }
  536.         30% {
  537.             opacity: 0.6;
  538.         }
  539.     }
  540.  
  541.     yt-icon-button#show-more.has-new-messages-miuzp {
  542.         animation: blinker-miuzp 1.74s linear infinite;
  543.     }
  544.  
  545.   `: '';
  546.  
  547.   const cssText11_entire_message_clickable = FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK ? `
  548.     
  549.     .yt-live-chat-item-list-renderer[whole-message-clickable] #menu.style-scope[class] {
  550.       pointer-events: none !important;
  551.     }
  552.  
  553.   `: '';
  554.  
  555.  
  556.   const addCss = () => `
  557.  
  558.   @property --ticker-rtime {
  559.     syntax: "<percentage>";
  560.     inherits: false;
  561.     initial-value: 0%;
  562.   }
  563.  
  564.   /*
  565.   .run-ticker {
  566.     background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  567.   }
  568.  
  569.   .run-ticker-test {
  570.     background: #00000001;
  571.   }
  572.  
  573.   .run-ticker-forced,
  574.   yt-live-chat-ticker-renderer #items > * > #container.run-ticker-forced,
  575.   yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker-forced[class]
  576.   {
  577.     background:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2)) !important;
  578.   }
  579.   */
  580.  
  581.   .run-ticker {
  582.     --ticker-bg:linear-gradient(90deg, var(--ticker-c1),var(--ticker-c1) var(--ticker-rtime),var(--ticker-c2) var(--ticker-rtime),var(--ticker-c2));
  583.   }
  584.  
  585.   .run-ticker,
  586.   yt-live-chat-ticker-renderer #items > * > #container.run-ticker,
  587.   yt-live-chat-ticker-renderer[class] #items[class] > *[class] > #container.run-ticker[class]
  588.   {
  589.     background: var(--ticker-bg) !important;
  590.   }
  591.  
  592.   yt-live-chat-ticker-dummy777-item-renderer {
  593.     background: #00000001;
  594.   }
  595.  
  596.   yt-live-chat-ticker-dummy777-item-renderer[dummy777] {
  597.     position: fixed !important;
  598.     top: -1000px !important;
  599.     left: -1000px !important;
  600.     font-size: 1px !important;
  601.     color: transparent !important;
  602.     pointer-events: none !important;
  603.     z-index: -1 !important;
  604.     contain: strict !important;
  605.     box-sizing: border-box !important;
  606.     pointer-events: none !important;
  607.     user-select: none !important;
  608.     max-width: 1px !important;
  609.     max-height: 1px !important;
  610.     overflow: hidden !important;
  611.     visibility: collapse !important;
  612.     display: none !important;
  613.   }
  614.  
  615.   yt-live-chat-ticker-dummy777-item-renderer #container {
  616.     background: inherit;
  617.   }
  618.  
  619.  
  620.   ${cssText8_fonts_pre_render}
  621.  
  622.   ${cssText9_no_backdrop_filter_when_menu_shown}
  623.  
  624.   @supports (contain: layout paint style) {
  625.  
  626.     ${cssText5}
  627.  
  628.   }
  629.  
  630.   @supports (color: var(--general)) {
  631.  
  632.     html {
  633.         --yt-live-chat-item-list-renderer-padding: 0px 0px;
  634.     }
  635.  
  636.     ${cssText3_smooth_transform_position}
  637.  
  638.     ${cssText7c_will_change_unset}
  639.  
  640.     ${cssText7b_content_visibility_unset}
  641.  
  642.     yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer {
  643.         overflow-y: scroll;
  644.         padding-right: 0;
  645.     }
  646.  
  647.     ${cssText4_smooth_transform_forced_props}
  648.  
  649.     yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * {
  650.         pointer-events: none !important;
  651.     }
  652.  
  653.     #continuations, #continuations * {
  654.         contain: strict;
  655.         position: fixed;
  656.         top: 2px;
  657.         height: 1px;
  658.         width: 2px;
  659.         height: 1px;
  660.         visibility: collapse;
  661.     }
  662.  
  663.     ${cssText6b_show_more_button}
  664.  
  665.     ${cssText6d_input_panel_border}
  666.  
  667.     ${cssText6c_input_panel_overflow}
  668.  
  669.   }
  670.  
  671.  
  672.   @supports (overflow-anchor: auto) {
  673.  
  674.     .no-anchor * {
  675.         overflow-anchor: none;
  676.     }
  677.     .no-anchor > item-anchor {
  678.         overflow-anchor: auto;
  679.     }
  680.  
  681.     item-anchor {
  682.  
  683.         height:1px;
  684.         width: 100%;
  685.         transform: scaleY(0.00001);
  686.         transform-origin:0 0;
  687.         contain: strict;
  688.         opacity:0;
  689.         display:flex;
  690.         position:relative;
  691.         flex-shrink:0;
  692.         flex-grow:0;
  693.         margin-bottom:0;
  694.         overflow:hidden;
  695.         box-sizing:border-box;
  696.         visibility: visible;
  697.         content-visibility: visible;
  698.         contain-intrinsic-size: auto 1px;
  699.         pointer-events:none !important;
  700.  
  701.     }
  702.  
  703.     #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] {
  704.         overflow-anchor: initial !important; /* whenever ENABLE_OVERFLOW_ANCHOR or not */
  705.     }
  706.  
  707.     html item-anchor {
  708.  
  709.         height: 1px;
  710.         width: 1px;
  711.         top: auto;
  712.         left: auto;
  713.         right: auto;
  714.         bottom: auto;
  715.         transform: translateY(-1px);
  716.         position: absolute;
  717.         z-index: -1;
  718.  
  719.     }
  720.  
  721.   }
  722.  
  723.   @supports (color: var(--pre-rendering)) {
  724.  
  725.     @keyframes dontRenderAnimation {
  726.         0% {
  727.             background-position-x: 3px;
  728.         }
  729.         100% {
  730.             background-position-x: 4px;
  731.         }
  732.     }
  733.  
  734.     .dont-render[class] {
  735.         /* visibility: collapse !important; */
  736.         /* visibility: collapse will make innerText become "" which conflicts with BetterStreamChat; see https://greasyfork.org/scripts/469878/discussions/197267 */
  737.  
  738.         transform: scale(0.01) !important;
  739.         transform: scale(0.00001) !important;
  740.         transform: scale(0.0000001) !important;
  741.         transform-origin: 0 0 !important;
  742.         z-index: -1 !important;
  743.         contain: strict !important;
  744.         box-sizing: border-box !important;
  745.  
  746.         height: 1px !important;
  747.         height: 0.1px !important;
  748.         height: 0.01px !important;
  749.         height: 0.0001px !important;
  750.         height: 0.000001px !important;
  751.  
  752.         animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important;
  753.  
  754.         pointer-events: none !important;
  755.         user-select: none !important;
  756.  
  757.     }
  758.  
  759.     #sk35z {
  760.       display: block !important;
  761.  
  762.       visibility: collapse !important;
  763.  
  764.       transform: scale(0.01) !important;
  765.       transform: scale(0.00001) !important;
  766.       transform: scale(0.0000001) !important;
  767.       transform-origin: 0 0 !important;
  768.       z-index: -1 !important;
  769.       contain: strict !important;
  770.       box-sizing: border-box !important;
  771.  
  772.       height: 1px !important;
  773.       height: 0.1px !important;
  774.       height: 0.01px !important;
  775.       height: 0.0001px !important;
  776.       height: 0.000001px !important;
  777.  
  778.       position: absolute !important;
  779.       top: -1000px !important;
  780.       left: -1000px !important;
  781.  
  782.     }
  783.  
  784.   }
  785.  
  786.   [rNgzQ] {
  787.     opacity: 0 !important;
  788.     pointer-events: none !important;
  789.   }
  790.  
  791.   ${cssText11_entire_message_clickable}
  792.  
  793.   ${cssText10_show_more_blinker}
  794.  
  795.   `;
  796.  
  797.  
  798.   const win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : (this instanceof Window ? this : window);
  799.  
  800.   // Create a unique key for the script and check if it is already running
  801.   const hkey_script = 'mchbwnoasqph';
  802.   if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting
  803.   win[hkey_script] = true;
  804.  
  805.   if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  806.  
  807.     let te4 = setTimeout(() => { }); // dummy; skip timerId only;
  808.     if (te4 < 3) {
  809.       setTimeout(() => { });
  810.       setTimeout(() => { });
  811.     }
  812.  
  813.   }
  814.  
  815.   class Mutex {
  816.  
  817.     constructor() {
  818.       this.p = Promise.resolve()
  819.     }
  820.  
  821.     /**
  822.      *  @param {(lockResolve: () => void)} f
  823.      */
  824.     lockWith(f) {
  825.       this.p = this.p.then(() => new Promise(f).catch(console.warn))
  826.     }
  827.  
  828.   }
  829.  
  830.   function dr(s) {
  831.     // reserved for future use
  832.     return s;
  833.     // return window.deWeakJS ? window.deWeakJS(s) : s;
  834.   }
  835.  
  836.   const getProto = (element) => {
  837.     if (element) {
  838.       const cnt = element.inst || element;
  839.       return cnt.constructor.prototype || null;
  840.     }
  841.     return null;
  842.   }
  843.  
  844.   const assertor = (f) => f() || console.assert(false, f + "");
  845.  
  846.   const fnIntegrity = (f, d) => {
  847.     if (!f || typeof f !== 'function') {
  848.       console.warn('f is not a function', f);
  849.       return;
  850.     }
  851.     let p = f + "", s = 0, j = -1, w = 0;
  852.     for (let i = 0, l = p.length; i < l; i++) {
  853.       const t = p[i];
  854.       if (((t >= 'a' && t <= 'z') || (t >= 'A' && t <= 'Z'))) {
  855.         if (j < i - 1) w++;
  856.         j = i;
  857.       } else {
  858.         s++;
  859.       }
  860.     }
  861.     let itz = `${f.length}.${s}.${w}`;
  862.     if (!d) {
  863.       return itz;
  864.     } else {
  865.       return itz === d;
  866.     }
  867.   }
  868.  
  869.  
  870.   console.assert(MAX_ITEMS_FOR_TOTAL_DISPLAY > 0 && MAX_ITEMS_FOR_FULL_FLUSH > 0 && MAX_ITEMS_FOR_TOTAL_DISPLAY > MAX_ITEMS_FOR_FULL_FLUSH)
  871.  
  872.   let ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = false;
  873.   const isContainSupport = CSS.supports('contain', 'layout paint style');
  874.   if (!isContainSupport) {
  875.     console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim());
  876.   } else {
  877.     ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE = true;
  878.   }
  879.  
  880.   let ENABLE_OVERFLOW_ANCHOR_CAPABLE = false;
  881.   const isOverflowAnchorSupport = CSS.supports('overflow-anchor', 'auto');
  882.   if (!isOverflowAnchorSupport) {
  883.     console.warn("Your browser does not support css property 'overflow-anchor'.\nPlease upgrade to the latest version.".trim());
  884.   } else {
  885.     ENABLE_OVERFLOW_ANCHOR_CAPABLE = true;
  886.   }
  887.  
  888.   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.
  889.  
  890.   const ENABLE_OVERFLOW_ANCHOR = ENABLE_OVERFLOW_ANCHOR_PREFERRED && ENABLE_OVERFLOW_ANCHOR_CAPABLE && ENABLE_NO_SMOOTH_TRANSFORM;
  891.   const ENABLE_DELAYED_CHAT_OCCURRENCE = ENABLE_DELAYED_CHAT_OCCURRENCE_PREFERRED && ENABLE_DELAYED_CHAT_OCCURRENCE_CAPABLE && ENABLE_OVERFLOW_ANCHOR && ENABLE_NO_SMOOTH_TRANSFORM && NOT_FIREFOX;
  892.  
  893.   let hasTimerModified = null;
  894.   const DO_CHECK_TICKER_BACKGROUND_OVERRIDED = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND || ENABLE_RAF_HACK_TICKERS;
  895.  
  896.   const fxOperator = (proto, propertyName) => {
  897.     let propertyDescriptorGetter = null;
  898.     try {
  899.       propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get;
  900.     } catch (e) { }
  901.     return typeof propertyDescriptorGetter === 'function' ? (e) => {
  902.       try {
  903.  
  904.         return propertyDescriptorGetter.call(dr(e));
  905.       } catch (e) { }
  906.       return e[propertyName];
  907.     } : (e) => e[propertyName];
  908.   };
  909.  
  910.   const nodeParent = fxOperator(Node.prototype, 'parentNode');
  911.   // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild');
  912.   const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling');
  913.   const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling');
  914.   const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild');
  915.  
  916.   const groupCollapsed = (text1, text2) => {
  917.  
  918.     console.groupCollapsed(`%c${text1}%c${text2}`,
  919.       "background-color: #010502; color: #6acafe; font-weight: 700; padding: 2px;",
  920.       "background-color: #010502; color: #6ad9fe; font-weight: 300; padding: 2px;"
  921.     );
  922.   }
  923.  
  924.  
  925.   const EVENT_KEY_ON_REGISTRY_READY = "ytI-ce-registry-created";
  926.   const onRegistryReady = (callback) => {
  927.     if (typeof customElements === 'undefined') {
  928.       if (!('__CE_registry' in document)) {
  929.         // https://github.com/webcomponents/polyfills/
  930.         Object.defineProperty(document, '__CE_registry', {
  931.           get() {
  932.             // return undefined
  933.           },
  934.           set(nv) {
  935.             if (typeof nv == 'object') {
  936.               delete this.__CE_registry;
  937.               this.__CE_registry = nv;
  938.               this.dispatchEvent(new CustomEvent(EVENT_KEY_ON_REGISTRY_READY));
  939.             }
  940.             return true;
  941.           },
  942.           enumerable: false,
  943.           configurable: true
  944.         })
  945.       }
  946.       let eventHandler = (evt) => {
  947.         document.removeEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  948.         const f = callback;
  949.         callback = null;
  950.         eventHandler = null;
  951.         f();
  952.       };
  953.       document.addEventListener(EVENT_KEY_ON_REGISTRY_READY, eventHandler, false);
  954.     } else {
  955.       callback();
  956.     }
  957.   };
  958.  
  959.   const promiseForCustomYtElementsReady = new Promise(onRegistryReady);
  960.  
  961.   const renderReadyPn = typeof ResizeObserver !== 'undefined' ? (sizingTarget) => {
  962.  
  963.     return new Promise(resolve => {
  964.  
  965.       let ro = new ResizeObserver(entries => {
  966.         if (entries && entries.length >= 1) {
  967.           resolve();
  968.           ro.disconnect();
  969.           ro = null;
  970.         }
  971.       });
  972.       ro.observe(sizingTarget);
  973.  
  974.  
  975.  
  976.     });
  977.  
  978.   } : (sizingTarget) => {
  979.  
  980.  
  981.     return new Promise(resolve => {
  982.  
  983.       let io = new IntersectionObserver(entries => {
  984.         if (entries && entries.length >= 1) {
  985.           resolve();
  986.           io.disconnect();
  987.           io = null;
  988.         }
  989.       });
  990.       io.observe(sizingTarget);
  991.  
  992.  
  993.  
  994.     });
  995.  
  996.   };
  997.  
  998.   /* globals WeakRef:false */
  999.  
  1000.   /** @type {(o: Object | null) => WeakRef | null} */
  1001.   const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  1002.  
  1003.   /** @type {(wr: Object | null) => Object | null} */
  1004.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  1005.  
  1006.   const { addCssManaged } = (() => {
  1007.  
  1008.     const addFontPreRendering = () => {
  1009.  
  1010.       groupCollapsed("YouTube Super Fast Chat", " | Fonts Pre-Rendering");
  1011.  
  1012.       let efsContainer = document.createElement('elzm-fonts');
  1013.       efsContainer.id = 'elzm-fonts-yk75g'
  1014.  
  1015.       const arr = [];
  1016.       let p = document.createElement('elzm-font');
  1017.       arr.push(p);
  1018.  
  1019.       if (ENABLE_FONT_PRE_RENDERING & 1) {
  1020.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1021.  
  1022.           p = document.createElement('elzm-font');
  1023.           p.style.fontWeight = size;
  1024.           arr.push(p);
  1025.         }
  1026.       }
  1027.  
  1028.       if (ENABLE_FONT_PRE_RENDERING & 2) {
  1029.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1030.  
  1031.           p = document.createElement('elzm-font');
  1032.           p.style.fontFamily = 'Roboto';
  1033.           p.style.fontWeight = size;
  1034.           arr.push(p);
  1035.         }
  1036.       }
  1037.  
  1038.       if (ENABLE_FONT_PRE_RENDERING & 4) {
  1039.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1040.  
  1041.           p = document.createElement('elzm-font');
  1042.           p.style.fontFamily = '"YouTube Noto",Roboto,Arial,Helvetica,sans-serif';
  1043.           p.style.fontWeight = size;
  1044.           arr.push(p);
  1045.         }
  1046.       }
  1047.  
  1048.  
  1049.       if (ENABLE_FONT_PRE_RENDERING & 8) {
  1050.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1051.  
  1052.           p = document.createElement('elzm-font');
  1053.           p.style.fontFamily = '"Noto",Roboto,Arial,Helvetica,sans-serif';
  1054.           p.style.fontWeight = size;
  1055.           arr.push(p);
  1056.         }
  1057.       }
  1058.  
  1059.  
  1060.       if (ENABLE_FONT_PRE_RENDERING & 16) {
  1061.         for (const size of [100, 200, 300, 400, 500, 600, 700, 800, 900]) {
  1062.  
  1063.           p = document.createElement('elzm-font');
  1064.           p.style.fontFamily = 'sans-serif';
  1065.           p.style.fontWeight = size;
  1066.           arr.push(p);
  1067.         }
  1068.       }
  1069.  
  1070.       console.log('number of elzm-font elements', arr.length);
  1071.  
  1072.       HTMLElement.prototype.append.apply(efsContainer, arr);
  1073.  
  1074.       (document.body || document.documentElement).appendChild(efsContainer);
  1075.  
  1076.  
  1077.       console.log('elzm-font elements have been added to the page for rendering.');
  1078.  
  1079.       console.groupEnd();
  1080.  
  1081.     }
  1082.  
  1083.     let isCssAdded = false;
  1084.  
  1085.     function addCssElement() {
  1086.       let s = document.createElement('style');
  1087.       s.id = 'ewRvC';
  1088.       return s;
  1089.     }
  1090.  
  1091.     const addCssManaged = () => {
  1092.       if (!isCssAdded && document.documentElement && document.head) {
  1093.         isCssAdded = true;
  1094.         document.head.appendChild(dr(addCssElement())).textContent = addCss();
  1095.         if (ENABLE_FONT_PRE_RENDERING) {
  1096.           Promise.resolve().then(addFontPreRendering)
  1097.         }
  1098.       }
  1099.     }
  1100.  
  1101.     return { addCssManaged };
  1102.   })();
  1103.  
  1104.  
  1105.   const { setupStyle } = (() => {
  1106.  
  1107.     const sp7 = Symbol();
  1108.  
  1109.     const proxyHelperFn = (dummy) => ({
  1110.  
  1111.       get(target, prop) {
  1112.         return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop];
  1113.       },
  1114.       set(target, prop, value) {
  1115.         if (!(prop in dummy)) {
  1116.           target[prop] = value;
  1117.         }
  1118.         return true;
  1119.       },
  1120.       has(target, prop) {
  1121.         return (prop in target);
  1122.       },
  1123.       deleteProperty(target, prop) {
  1124.         return true;
  1125.       },
  1126.       ownKeys(target) {
  1127.         return Object.keys(target);
  1128.       },
  1129.       defineProperty(target, key, descriptor) {
  1130.         return Object.defineProperty(target, key, descriptor);
  1131.       },
  1132.       getOwnPropertyDescriptor(target, key) {
  1133.         return Object.getOwnPropertyDescriptor(target, key);
  1134.       },
  1135.  
  1136.     });
  1137.  
  1138.     const setupStyle = (m1, m2) => {
  1139.       if (!ENABLE_NO_SMOOTH_TRANSFORM) return;
  1140.  
  1141.       const dummy1v = {
  1142.         transform: '',
  1143.         height: '',
  1144.         minHeight: '',
  1145.         paddingBottom: '',
  1146.         paddingTop: ''
  1147.       };
  1148.  
  1149.       const dummyStyleFn = (k) => (function () { const style = this[sp7]; return style[k](...arguments); });
  1150.       for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) {
  1151.         dummy1v[k] = dummyStyleFn(k);
  1152.       }
  1153.  
  1154.       const dummy1p = proxyHelperFn(dummy1v);
  1155.       const sp1v = new Proxy(m1.style, dummy1p);
  1156.       const sp2v = new Proxy(m2.style, dummy1p);
  1157.       Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true });
  1158.       Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true });
  1159.       m1.removeAttribute("style");
  1160.       m2.removeAttribute("style");
  1161.  
  1162.     }
  1163.  
  1164.     return { setupStyle };
  1165.  
  1166.   })();
  1167.  
  1168.  
  1169.  
  1170.   function setThumbnails(config) {
  1171.  
  1172.     const { baseObject, thumbnails, flag0, imageLinks } = config;
  1173.  
  1174.     if (flag0 || (ENABLE_PRELOAD_THUMBNAIL && imageLinks)) {
  1175.  
  1176.  
  1177.       if (thumbnails && thumbnails.length > 0) {
  1178.         if (flag0 > 0 && thumbnails.length > 1) {
  1179.           let pSize = 0;
  1180.           let newThumbnails = [];
  1181.           for (const thumbnail of thumbnails) {
  1182.             if (!thumbnail || !thumbnail.url) continue;
  1183.             const squarePhoto = thumbnail.width === thumbnail.height && typeof thumbnail.width === 'number';
  1184.             const condSize = pSize <= 0 || (flag0 === 1 ? pSize > thumbnail.width : pSize < thumbnail.width);
  1185.             const leastSizeFulfilled = squarePhoto ? thumbnail.width >= LEAST_IMAGE_SIZE : true;
  1186.             if ((!squarePhoto || condSize) && leastSizeFulfilled) {
  1187.               newThumbnails.push(thumbnail);
  1188.               if (imageLinks) imageLinks.add(thumbnail.url);
  1189.             }
  1190.             if (squarePhoto && condSize && leastSizeFulfilled) {
  1191.               pSize = thumbnail.width;
  1192.             }
  1193.           }
  1194.           if (thumbnails.length !== newThumbnails.length && thumbnails === baseObject.thumbnails && newThumbnails.length > 0) {
  1195.             baseObject.thumbnails = newThumbnails;
  1196.           } else {
  1197.             newThumbnails.length = 0;
  1198.           }
  1199.           newThumbnails = null;
  1200.         } else {
  1201.           for (const thumbnail of thumbnails) {
  1202.             if (thumbnail && thumbnail.url) {
  1203.               if (imageLinks) imageLinks.add(thumbnail.url);
  1204.             }
  1205.           }
  1206.         }
  1207.       }
  1208.  
  1209.     }
  1210.   }
  1211.  
  1212.   function fixLiveChatItem(item, imageLinks) {
  1213.     const liveChatTextMessageRenderer = (item || 0).liveChatTextMessageRenderer || 0;
  1214.     if (liveChatTextMessageRenderer) {
  1215.       const messageRuns = (liveChatTextMessageRenderer.message || 0).runs || 0;
  1216.       if (messageRuns && messageRuns.length > 0) {
  1217.         for (const run of messageRuns) {
  1218.           const emojiImage = (((run || 0).emoji || 0).image || 0);
  1219.           setThumbnails({
  1220.             baseObject: emojiImage,
  1221.             thumbnails: emojiImage.thumbnails,
  1222.             flag0: EMOJI_IMAGE_SINGLE_THUMBNAIL,
  1223.             imageLinks
  1224.           });
  1225.         }
  1226.       }
  1227.       const authorPhoto = liveChatTextMessageRenderer.authorPhoto || 0;
  1228.       setThumbnails({
  1229.         baseObject: authorPhoto,
  1230.         thumbnails: authorPhoto.thumbnails,
  1231.         flag0: AUTHOR_PHOTO_SINGLE_THUMBNAIL,
  1232.         imageLinks
  1233.       });
  1234.     }
  1235.   }
  1236.  
  1237.  
  1238.   const flagsFnOnInterval = (ENABLE_FLAGS_MAINTAIN_STABLE_LIST || ENABLE_FLAGS_REUSE_COMPONENTS) ? (() => {
  1239.  
  1240.     const flags = () => {
  1241.       try {
  1242.         return ytcfg.data_.EXPERIMENT_FLAGS;
  1243.       } catch (e) { }
  1244.       return null;
  1245.     };
  1246.  
  1247.     const flagsForced = () => {
  1248.       try {
  1249.         return ytcfg.data_.EXPERIMENTS_FORCED_FLAGS;
  1250.       } catch (e) { }
  1251.       return null;
  1252.     };
  1253.  
  1254.     const flagsFn = (EXPERIMENT_FLAGS) => {
  1255.  
  1256.       if (!EXPERIMENT_FLAGS) return;
  1257.  
  1258.       if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST) {
  1259.         if (USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true : true) {
  1260.           EXPERIMENT_FLAGS.kevlar_tuner_should_test_maintain_stable_list = true;
  1261.           EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list = true;
  1262.         }
  1263.       }
  1264.  
  1265.       if (ENABLE_FLAGS_REUSE_COMPONENTS) {
  1266.         EXPERIMENT_FLAGS.kevlar_tuner_should_test_reuse_components = true;
  1267.         EXPERIMENT_FLAGS.kevlar_tuner_should_reuse_components = true;
  1268.       }
  1269.  
  1270.     };
  1271.  
  1272.     const uf = (EXPERIMENT_FLAGS) => {
  1273.       if (EXPERIMENT_FLAGS === undefined) EXPERIMENT_FLAGS = flags();
  1274.       if (EXPERIMENT_FLAGS) {
  1275.         flagsFn(EXPERIMENT_FLAGS);
  1276.         flagsFn(flagsForced());
  1277.       }
  1278.     }
  1279.  
  1280.     uf();
  1281.  
  1282.     const flagsFnOnInterval = (setInterval, clearInterval) => {
  1283.  
  1284.       uf();
  1285.       let cidFlags = 0;
  1286.       let kd = 0;
  1287.       new Promise(flagResolve => {
  1288.  
  1289.         const flagTimer = () => {
  1290.           const EXPERIMENT_FLAGS = flags();
  1291.           if (!EXPERIMENT_FLAGS) return;
  1292.           uf(EXPERIMENT_FLAGS);
  1293.           if (kd > 0) return;
  1294.           kd = 1;
  1295.           const delay1000 = new Promise(resolve => setTimeout(resolve, 1000));
  1296.           const moDeferred = new Promise(resolve => {
  1297.             let mo = new MutationObserver(() => {
  1298.               if (mo) {
  1299.                 mo.disconnect();
  1300.                 mo.takeRecords();
  1301.                 mo = null;
  1302.                 resolve();
  1303.               }
  1304.             });
  1305.             mo.observe(document, { subtree: true, childList: true });
  1306.           });
  1307.           Promise.race([delay1000, moDeferred]).then(flagResolve);
  1308.         };
  1309.  
  1310.         uf();
  1311.         cidFlags = setInterval(flagTimer, 1);
  1312.       }).then(() => {
  1313.         if (cidFlags > 0) clearInterval(cidFlags);
  1314.         cidFlags = 0;
  1315.         uf();
  1316.       });
  1317.  
  1318.     }
  1319.  
  1320.     return flagsFnOnInterval;
  1321.  
  1322.   })() : null;
  1323.  
  1324.   let kptPF = null;
  1325.   const emojiPrefetched = new Set();
  1326.   const authorPhotoPrefetched = new Set();
  1327.  
  1328.   function linker(link, rel, href, _as) {
  1329.     return new Promise(resolve => {
  1330.       if (!link) link = document.createElement('link');
  1331.       link.rel = rel;
  1332.       if (_as) link.setAttribute('as', _as);
  1333.       link.onload = function () {
  1334.         resolve({
  1335.           link: this,
  1336.           success: true
  1337.         })
  1338.         this.remove();
  1339.       };
  1340.       link.onerror = function () {
  1341.         resolve({
  1342.           link: this,
  1343.           success: false
  1344.         });
  1345.         this.remove();
  1346.       };
  1347.       link.href = href;
  1348.       document.head.appendChild(link);
  1349.       link = null;
  1350.     });
  1351.   }
  1352.  
  1353.  
  1354.  
  1355.   const cleanContext = async (win) => {
  1356.     const waitFn = requestAnimationFrame; // shall have been binded to window
  1357.     try {
  1358.       let mx = 16; // MAX TRIAL
  1359.       const frameId = 'vanillajs-iframe-v1';
  1360.       /** @type {HTMLIFrameElement | null} */
  1361.       let frame = document.getElementById(frameId);
  1362.       let removeIframeFn = null;
  1363.       if (!frame) {
  1364.         frame = document.createElement('iframe');
  1365.         frame.id = 'vanillajs-iframe-v1';
  1366.         frame.sandbox = 'allow-same-origin'; // script cannot be run inside iframe but API can be obtained from iframe
  1367.         let n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting)
  1368.         n.appendChild(frame);
  1369.         while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine
  1370.         const root = document.documentElement;
  1371.         root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL
  1372.         removeIframeFn = (setTimeout) => {
  1373.           const removeIframeOnDocumentReady = (e) => {
  1374.             e && win.removeEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1375.             win = null;
  1376.             setTimeout(() => {
  1377.               n.remove();
  1378.               n = null;
  1379.             }, 200);
  1380.           }
  1381.           if (document.readyState !== 'loading') {
  1382.             removeIframeOnDocumentReady();
  1383.           } else {
  1384.             win.addEventListener("DOMContentLoaded", removeIframeOnDocumentReady, false);
  1385.           }
  1386.         }
  1387.       }
  1388.       while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn);
  1389.       const fc = frame.contentWindow;
  1390.       if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL
  1391.       const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval } = fc;
  1392.       const res = { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval };
  1393.       for (let k in res) res[k] = res[k].bind(win); // necessary
  1394.       if (removeIframeFn) Promise.resolve(res.setTimeout).then(removeIframeFn);
  1395.       res.animate = fc.HTMLElement.prototype.animate;
  1396.       jsonParseFix = {
  1397.         _JSON: fc.JSON, _parse: fc.JSON.parse
  1398.       }
  1399.       return res;
  1400.     } catch (e) {
  1401.       console.warn(e);
  1402.       return null;
  1403.     }
  1404.   };
  1405.  
  1406.   cleanContext(win).then(__CONTEXT__ => {
  1407.     if (!__CONTEXT__) return null;
  1408.  
  1409.     const { requestAnimationFrame, setTimeout, cancelAnimationFrame, setInterval, clearInterval, animate } = __CONTEXT__;
  1410.  
  1411.  
  1412.  
  1413.     let foregroundPromiseForLiveChatFlush = null;
  1414.  
  1415.     const getForegroundPromiseForLiveChatFlush = () => {
  1416.       if (document.visibilityState === 'visible') return Promise.resolve();
  1417.       else {
  1418.         return (foregroundPromiseForLiveChatFlush = (foregroundPromiseForLiveChatFlush || new Promise(resolve => {
  1419.           requestAnimationFrame(() => {
  1420.             foregroundPromiseForLiveChatFlush = null;
  1421.             resolve();
  1422.           });
  1423.         })));
  1424.       }
  1425.     }
  1426.  
  1427.     let aeConstructor = null;
  1428.  
  1429.     // << if ENABLE_VIDEO_PROGRESS_STATE_FIX >>
  1430.     let pairForPauseResume = 0; // each increasion = number of ticker
  1431.     let pairForPauseResumeM = 0;
  1432.     // << end >>
  1433.  
  1434.     // << __openedChanged82 >>
  1435.     let currentMenuPivotWR = null;
  1436.  
  1437.     // << if DO_PARTICIPANT_LIST_HACKS >>
  1438.     const beforeParticipantsMap = new WeakMap();
  1439.     // << end >>
  1440.  
  1441.  
  1442.  
  1443.     // << if onRegistryReadyForDOMOperations >>
  1444.  
  1445.     let dt0 = Date.now() - 2000;
  1446.     const dateNow = () => Date.now() - dt0;
  1447.     // let lastScroll = 0;
  1448.     // let lastLShow = 0;
  1449.     let lastWheel = 0;
  1450.     let lastMouseDown = 0;
  1451.     let lastMouseUp = 0;
  1452.     let currentMouseDown = false;
  1453.     let lastTouchDown = 0;
  1454.     let lastTouchUp = 0;
  1455.     let currentTouchDown = false;
  1456.     let lastUserInteraction = 0;
  1457.  
  1458.     let scrollChatFn = null;
  1459.  
  1460.     let skipDontRender = true; // true first; false by flushActiveItems_
  1461.     let allowDontRender = null;
  1462.  
  1463.     // ---- #items mutation ----
  1464.     let sk35zResolveFn = null;
  1465.     let firstList = true;
  1466.  
  1467.     // << end >>
  1468.  
  1469.     class RAFHub {
  1470.       constructor() {
  1471.         /** @type {number} */
  1472.         this.startAt = 8170;
  1473.         /** @type {number} */
  1474.         this.counter = 0;
  1475.         /** @type {number} */
  1476.         this.rid = 0;
  1477.         /** @type {Map<number, FrameRequestCallback>} */
  1478.         this.funcs = new Map();
  1479.         const funcs = this.funcs;
  1480.         /** @type {FrameRequestCallback} */
  1481.         this.bCallback = this.mCallback.bind(this);
  1482.         this.pClear = () => funcs.clear();
  1483.         this.keepRAF = false;
  1484.       }
  1485.       /** @param {DOMHighResTimeStamp} highResTime */
  1486.       mCallback(highResTime) {
  1487.         this.rid = 0;
  1488.         Promise.resolve().then(this.pClear);
  1489.         this.funcs.forEach(func => Promise.resolve(highResTime).then(func).catch(console.warn));
  1490.       }
  1491.       /** @param {FrameRequestCallback} f */
  1492.       request(f) {
  1493.         if (this.counter > 1e9) this.counter = 9;
  1494.         let cid = this.startAt + (++this.counter);
  1495.         this.funcs.set(cid, f);
  1496.         if (this.rid === 0) this.rid = requestAnimationFrame(this.bCallback);
  1497.         return cid;
  1498.       }
  1499.       /** @param {number} cid */
  1500.       cancel(cid) {
  1501.         cid = +cid;
  1502.         if (cid > 0) {
  1503.           if (cid <= this.startAt) {
  1504.             return cancelAnimationFrame(cid);
  1505.           }
  1506.           if (this.rid > 0) {
  1507.             this.funcs.delete(cid);
  1508.             if (this.funcs.size === 0 && !this.keepRAF) {
  1509.               cancelAnimationFrame(this.rid);
  1510.               this.rid = 0;
  1511.             }
  1512.           }
  1513.         }
  1514.       }
  1515.     }
  1516.  
  1517.     function basePrefetching() {
  1518.  
  1519.       new Promise(resolve => {
  1520.  
  1521.         if (document.readyState !== 'loading') {
  1522.           resolve();
  1523.         } else {
  1524.           win.addEventListener("DOMContentLoaded", resolve, false);
  1525.         }
  1526.  
  1527.       }).then(() => {
  1528.         const hostL1 = [
  1529.           'https://www.youtube.com', 'https://googlevideo.com',
  1530.           'https://googleapis.com', 'https://accounts.youtube.com',
  1531.           'https://www.gstatic.com', 'https://ggpht.com',
  1532.           'https://yt3.ggpht.com', 'https://yt4.ggpht.com'
  1533.         ];
  1534.  
  1535.         const hostL2 = [
  1536.           'https://youtube.com',
  1537.           'https://fonts.googleapis.com', 'https://fonts.gstatic.com'
  1538.         ];
  1539.  
  1540.         let link = null;
  1541.  
  1542.         function kn() {
  1543.  
  1544.           link = document.createElement('link');
  1545.           if (link.relList && link.relList.supports) {
  1546.             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)
  1547.           } else {
  1548.             kptPF = 0;
  1549.           }
  1550.  
  1551.           groupCollapsed("YouTube Super Fast Chat", " | PREFETCH SUPPORTS");
  1552.           if (ENABLE_BASE_PREFETCHING) console.log('dns-prefetch', (kptPF & 1) ? 'OK' : 'NG');
  1553.           if (ENABLE_BASE_PREFETCHING) console.log('preconnect', (kptPF & 2) ? 'OK' : 'NG');
  1554.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('prefetch', (kptPF & 4) ? 'OK' : 'NG');
  1555.           // console.log('subresource', (kptPF & 8) ? 'OK' : 'NG');
  1556.           if (ENABLE_PRELOAD_THUMBNAIL) console.log('preload', (kptPF & 16) ? 'OK' : 'NG');
  1557.           console.groupEnd();
  1558.  
  1559.         }
  1560.  
  1561.         for (const h of hostL1) {
  1562.  
  1563.           if (kptPF === null) kn();
  1564.           if (ENABLE_BASE_PREFETCHING) {
  1565.             // if (kptPF & 1) {
  1566.             //   linker(link, 'dns-prefetch', h);
  1567.             //   link = null;
  1568.             // }
  1569.             if (kptPF & 2) {
  1570.               linker(link, 'preconnect', h);
  1571.               link = null;
  1572.             }
  1573.           }
  1574.         }
  1575.  
  1576.         for (const h of hostL2) {
  1577.           if (kptPF === null) kn();
  1578.           if (ENABLE_BASE_PREFETCHING) {
  1579.             if (kptPF & 1) {
  1580.               linker(link, 'dns-prefetch', h);
  1581.               link = null;
  1582.             }
  1583.           }
  1584.         }
  1585.  
  1586.       })
  1587.  
  1588.  
  1589.     }
  1590.  
  1591.     if (flagsFnOnInterval) flagsFnOnInterval(setInterval, clearInterval);
  1592.  
  1593.     if (DO_LINK_PREFETCH) basePrefetching();
  1594.  
  1595.     const { notifyPath7081 } = (() => {
  1596.       // DO_PARTICIPANT_LIST_HACKS
  1597.  
  1598.       const mutexParticipants = new Mutex();
  1599.  
  1600.       let uvid = 0;
  1601.       let r95dm = 0;
  1602.       let c95dm = -1;
  1603.  
  1604.       const foundMap = (base, content) => {
  1605.         /*
  1606.           let lastSearch = 0;
  1607.           let founds = base.map(baseEntry => {
  1608.             let search = content.indexOf(baseEntry, lastSearch);
  1609.             if (search < 0) return false;
  1610.             lastSearch = search + 1;
  1611.             return true;
  1612.           });
  1613.           return founds;
  1614.         */
  1615.         const contentSet = new Set(content);
  1616.         return base.map(baseEntry => contentSet.has(baseEntry));
  1617.  
  1618.       }
  1619.  
  1620.  
  1621.  
  1622.       const spliceIndicesFunc = (beforeParticipants, participants, idsBefore, idsAfter) => {
  1623.  
  1624.         const handler1 = {
  1625.           get(target, prop, receiver) {
  1626.             if (prop === 'object') {
  1627.               return participants; // avoid memory leakage
  1628.             }
  1629.             if (prop === 'type') {
  1630.               return 'splice';
  1631.             }
  1632.             return target[prop];
  1633.           }
  1634.         };
  1635.         const releaser = () => {
  1636.           participants = null;
  1637.         }
  1638.  
  1639.         let foundsForAfter = foundMap(idsAfter, idsBefore);
  1640.         let foundsForBefore = foundMap(idsBefore, idsAfter);
  1641.  
  1642.         let indexSplices = [];
  1643.         let contentUpdates = [];
  1644.         for (let i = 0, j = 0; i < foundsForBefore.length || j < foundsForAfter.length;) {
  1645.           if (beforeParticipants[i] === participants[j]) {
  1646.             i++; j++;
  1647.           } else if (idsBefore[i] === idsAfter[j]) {
  1648.             // content changed
  1649.             contentUpdates.push({ indexI: i, indexJ: j })
  1650.             i++; j++;
  1651.           } else {
  1652.             let addedCount = 0;
  1653.             for (let q = j; q < foundsForAfter.length; q++) {
  1654.               if (foundsForAfter[q] === false) addedCount++;
  1655.               else break;
  1656.             }
  1657.             let removedCount = 0;
  1658.             for (let q = i; q < foundsForBefore.length; q++) {
  1659.               if (foundsForBefore[q] === false) removedCount++;
  1660.               else break;
  1661.             }
  1662.             if (!addedCount && !removedCount) {
  1663.               throw 'ERROR(0xFF32): spliceIndicesFunc';
  1664.             }
  1665.             indexSplices.push(new Proxy({
  1666.               index: j,
  1667.               addedCount: addedCount,
  1668.               removed: removedCount >= 1 ? beforeParticipants.slice(i, i + removedCount) : []
  1669.             }, handler1));
  1670.             i += removedCount;
  1671.             j += addedCount;
  1672.           }
  1673.         }
  1674.         foundsForBefore = null;
  1675.         foundsForAfter = null;
  1676.         idsBefore = null;
  1677.         idsAfter = null;
  1678.         beforeParticipants = null;
  1679.         return { indexSplices, contentUpdates, releaser };
  1680.  
  1681.       }
  1682.  
  1683.       /*
  1684.  
  1685.       customElements.get("yt-live-chat-participant-renderer").prototype.notifyPath=function(){  console.log(123);  console.log(new Error().stack)}
  1686.  
  1687.       VM63631:1 Error
  1688.       at customElements.get.notifyPath (<anonymous>:1:122)
  1689.       at e.forwardRendererStamperChanges_ (live_chat_polymer.js:4453:35)
  1690.       at e.rendererStamperApplyChangeRecord_ (live_chat_polymer.js:4451:12)
  1691.       at e.rendererStamperObserver_ (live_chat_polymer.js:4448:149)
  1692.       at Object.pu [as fn] (live_chat_polymer.js:1692:118)
  1693.       at ju (live_chat_polymer.js:1674:217)
  1694.       at a._propertiesChanged (live_chat_polymer.js:1726:122)
  1695.       at b._flushProperties (live_chat_polymer.js:1597:200)
  1696.       at a._invalidateProperties (live_chat_polymer.js:1718:69)
  1697.       at a.notifyPath (live_chat_polymer.js:1741:182)
  1698.  
  1699.       */
  1700.  
  1701.       function convertToIds(participants) {
  1702.         return participants.map(participant => {
  1703.           if (!participant || typeof participant !== 'object') {
  1704.             console.warn('Error(0xFA41): convertToIds', participant);
  1705.             return participant; // just in case
  1706.           }
  1707.           let keys = Object.keys(participant);
  1708.           // liveChatTextMessageRenderer
  1709.           // liveChatParticipantRenderer - livestream channel owner [no authorExternalChannelId]
  1710.           // liveChatPaidMessageRenderer
  1711.           /*
  1712.  
  1713.             'yt-live-chat-participant-renderer' utilizes the following:
  1714.             authorName.simpleText: string
  1715.             authorPhoto.thumbnails: Object{url:string, width:int, height:int} []
  1716.             authorBadges[].liveChatAuthorBadgeRenderer.icon.iconType: string
  1717.             authorBadges[].liveChatAuthorBadgeRenderer.tooltip: string
  1718.             authorBadges[].liveChatAuthorBadgeRenderer.accessibility.accessibilityData: Object{label:string}
  1719.  
  1720.           */
  1721.           if (keys.length !== 1) {
  1722.             console.warn('Error(0xFA42): convertToIds', participant);
  1723.             return participant; // just in case
  1724.           }
  1725.           let key = keys[0];
  1726.           let renderer = (participant[key] || 0);
  1727.           let authorName = (renderer.authorName || 0);
  1728.           let text = `${authorName.simpleText || authorName.text}`
  1729.           let res = participant; // fallback if it is not a vaild entry
  1730.           if (typeof text !== 'string') {
  1731.             console.warn('Error(0xFA53): convertToIds', participant);
  1732.           } else {
  1733.             text = `${renderer.authorExternalChannelId || 'null'}|${text || ''}`;
  1734.             if (text.length > 1) res = text;
  1735.           }
  1736.           return res;
  1737.           // return renderer?`${renderer.id}|${renderer.authorExternalChannelId}`: '';
  1738.           // note: renderer.id will be changed if the user typed something to trigger the update of the participants' record.
  1739.         });
  1740.       }
  1741.  
  1742.       const checkChangeToParticipantRendererContent = CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT ? (p1, p2) => {
  1743.         // just update when content is changed.
  1744.         if (p1.authorName !== p2.authorName) return true;
  1745.         if (p1.authorPhoto !== p2.authorPhoto) return true;
  1746.         if (p1.authorBadges !== p2.authorBadges) return true;
  1747.         return false;
  1748.       } : (p1, p2) => {
  1749.         // keep integrity all the time.
  1750.         return p1 !== p2; // always true
  1751.       }
  1752.  
  1753.       function notifyPath7081(path) { // cnt "yt-live-chat-participant-list-renderer"
  1754.  
  1755.         if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1756.           if (path !== "participantsManager.participants") {
  1757.             return this.__notifyPath5036__.apply(this, arguments);
  1758.           }
  1759.           if (c95dm === r95dm) return;
  1760.         } else {
  1761.           const stack = new Error().stack;
  1762.           if (path !== "participantsManager.participants" || stack.indexOf('.onParticipantsChanged') < 0) {
  1763.             return this.__notifyPath5036__.apply(this, arguments);
  1764.           }
  1765.         }
  1766.  
  1767.         if (uvid > 1e8) uvid = uvid % 100;
  1768.         let tid = ++uvid;
  1769.  
  1770.         const cnt = this; // "yt-live-chat-participant-list-renderer"
  1771.         mutexParticipants.lockWith(lockResolve => {
  1772.  
  1773.           const participants00 = cnt.participantsManager.participants;
  1774.  
  1775.           if (tid !== uvid || typeof (participants00 || 0).splice !== 'function') {
  1776.             lockResolve();
  1777.             return;
  1778.           }
  1779.  
  1780.           let doUpdate = false;
  1781.  
  1782.           if (PARTICIPANT_UPDATE_ONLY_ONLY_IF_MODIFICATION_DETECTED) {
  1783.  
  1784.             if (!participants00.r94dm) {
  1785.               participants00.r94dm = 1;
  1786.               if (++r95dm > 1e9) r95dm = 9;
  1787.               participants00.push = function () {
  1788.                 if (++r95dm > 1e9) r95dm = 9;
  1789.                 return Array.prototype.push.apply(this, arguments);
  1790.               }
  1791.               participants00.pop = function () {
  1792.                 if (++r95dm > 1e9) r95dm = 9;
  1793.                 return Array.prototype.pop.apply(this, arguments);
  1794.               }
  1795.               participants00.shift = function () {
  1796.                 if (++r95dm > 1e9) r95dm = 9;
  1797.                 return Array.prototype.shift.apply(this, arguments);
  1798.               }
  1799.               participants00.unshift = function () {
  1800.                 if (++r95dm > 1e9) r95dm = 9;
  1801.                 return Array.prototype.unshift.apply(this, arguments);
  1802.               }
  1803.               participants00.splice = function () {
  1804.                 if (++r95dm > 1e9) r95dm = 9;
  1805.                 return Array.prototype.splice.apply(this, arguments);
  1806.               }
  1807.               participants00.sort = function () {
  1808.                 if (++r95dm > 1e9) r95dm = 9;
  1809.                 return Array.prototype.sort.apply(this, arguments);
  1810.               }
  1811.               participants00.reverse = function () {
  1812.                 if (++r95dm > 1e9) r95dm = 9;
  1813.                 return Array.prototype.reverse.apply(this, arguments);
  1814.               }
  1815.             }
  1816.  
  1817.             if (c95dm !== r95dm) {
  1818.               c95dm = r95dm;
  1819.               doUpdate = true;
  1820.             }
  1821.  
  1822.           } else {
  1823.             doUpdate = true;
  1824.           }
  1825.  
  1826.           if (!doUpdate) {
  1827.             lockResolve();
  1828.             return;
  1829.           }
  1830.  
  1831.           const participants = participants00.slice(0);
  1832.           const beforeParticipants = beforeParticipantsMap.get(cnt) || [];
  1833.           beforeParticipantsMap.set(cnt, participants);
  1834.  
  1835.           const resPromise = (async () => {
  1836.  
  1837.             if (beforeParticipants.length === 0) {
  1838.               // not error
  1839.               return 0;
  1840.             }
  1841.  
  1842.             let countOfElements = cnt.__getAllParticipantsDOMRenderedLength__()
  1843.  
  1844.             // console.log(participants.length, doms.length) // different if no requestAnimationFrame
  1845.             if (beforeParticipants.length !== countOfElements) {
  1846.               // there is somewrong for the cache. - sometimes happen
  1847.               return 0;
  1848.             }
  1849.  
  1850.             const idsBefore = convertToIds(beforeParticipants);
  1851.             const idsAfter = convertToIds(participants);
  1852.  
  1853.             let { indexSplices, contentUpdates, releaser } = spliceIndicesFunc(beforeParticipants, participants, idsBefore, idsAfter);
  1854.  
  1855.             let res = 1; // default 1 for no update
  1856.  
  1857.             if (indexSplices.length >= 1) {
  1858.  
  1859.  
  1860.               // let p2 =  participants.slice(indexSplices[0].index, indexSplices[0].index+indexSplices[0].addedCount);
  1861.               // let p1 = indexSplices[0].removed;
  1862.               // console.log(indexSplices.length, indexSplices ,p1,p2,  convertToIds(p1),convertToIds(p2))
  1863.  
  1864.               /* folllow
  1865.                   a.notifyPath(c + ".splices", d);
  1866.                   a.notifyPath(c + ".length", b.length);
  1867.               */
  1868.               // stampDomArraySplices_
  1869.  
  1870.  
  1871.               await new Promise(resolve => {
  1872.                 cnt.resolveForDOMRendering781 = resolve;
  1873.  
  1874.                 cnt.__notifyPath5036__("participantsManager.participants.splices", {
  1875.                   indexSplices
  1876.                 });
  1877.                 indexSplices = null;
  1878.                 releaser();
  1879.                 releaser = null;
  1880.                 cnt.__notifyPath5036__("participantsManager.participants.length",
  1881.                   participants.length
  1882.                 );
  1883.  
  1884.               });
  1885.  
  1886.               await Promise.resolve(0); // play safe for the change of 'length'
  1887.               countOfElements = cnt.__getAllParticipantsDOMRenderedLength__();
  1888.  
  1889.               let wrongSize = participants.length !== countOfElements
  1890.               if (wrongSize) {
  1891.                 console.warn("ERROR(0xE2C3): notifyPath7081", beforeParticipants.length, participants.length, doms.length)
  1892.                 return 0;
  1893.               }
  1894.  
  1895.               res = 2 | 4;
  1896.  
  1897.             } else {
  1898.  
  1899.               indexSplices = null;
  1900.               releaser();
  1901.               releaser = null;
  1902.  
  1903.               if (participants.length !== countOfElements) {
  1904.                 // other unhandled cases
  1905.                 return 0;
  1906.               }
  1907.  
  1908.             }
  1909.  
  1910.             // participants.length === countOfElements before contentUpdates
  1911.             if (contentUpdates.length >= 1) {
  1912.               for (const contentUpdate of contentUpdates) {
  1913.                 let isChanged = checkChangeToParticipantRendererContent(beforeParticipants[contentUpdate.indexI], participants[contentUpdate.indexJ]);
  1914.                 if (isChanged) {
  1915.                   cnt.__notifyPath5036__(`participantsManager.participants[${contentUpdate.indexJ}]`);
  1916.                   res |= 4 | 8;
  1917.                 }
  1918.               }
  1919.             }
  1920.             contentUpdates = null;
  1921.  
  1922.             return res;
  1923.  
  1924.  
  1925.           })();
  1926.  
  1927.  
  1928.           resPromise.then(resValue => {
  1929.  
  1930.             const isLogRequired = SHOW_PARTICIPANT_CHANGES_IN_CONSOLE && ((resValue === 0) || ((resValue & 4) === 4));
  1931.             isLogRequired && groupCollapsed("Participant List Change", `tid = ${tid}; res = ${resValue}`);
  1932.             if (resValue === 0) {
  1933.               new Promise(resolve => {
  1934.                 cnt.resolveForDOMRendering781 = resolve;
  1935.                 isLogRequired && console.log("Full Refresh begins");
  1936.                 cnt.__notifyPath5036__("participantsManager.participants"); // full refresh
  1937.               }).then(() => {
  1938.                 isLogRequired && console.log("Full Refresh ends");
  1939.                 console.groupEnd();
  1940.               }).then(lockResolve);
  1941.               return;
  1942.             }
  1943.  
  1944.             const delayLockResolve = (resValue & 4) === 4;
  1945.  
  1946.             if (delayLockResolve) {
  1947.               isLogRequired && console.log(`Number of participants (before): ${beforeParticipants.length}`);
  1948.               isLogRequired && console.log(`Number of participants (after): ${participants.length}`);
  1949.               isLogRequired && console.log(`Total number of rendered participants: ${cnt.__getAllParticipantsDOMRenderedLength__()}`);
  1950.               isLogRequired && console.log(`Participant Renderer Content Updated: ${(resValue & 8) === 8}`);
  1951.               isLogRequired && console.groupEnd();
  1952.               // requestAnimationFrame is required to avoid particiant update during DOM changing (stampDomArraySplices_)
  1953.               // mutex lock with requestAnimationFrame can also disable participants update in background
  1954.               requestAnimationFrame(lockResolve);
  1955.             } else {
  1956.               lockResolve();
  1957.             }
  1958.  
  1959.           });
  1960.  
  1961.         });
  1962.  
  1963.       }
  1964.  
  1965.       return { notifyPath7081 };
  1966.  
  1967.     })();
  1968.  
  1969.  
  1970.     const onRegistryReadyForDataManipulation = () => {
  1971.  
  1972.       function dummy5035(a, b, c) { }
  1973.       function dummy411(a, b, c) { }
  1974.  
  1975.       customElements.whenDefined("yt-live-chat-participant-list-renderer").then(() => {
  1976.  
  1977.         if (!DO_PARTICIPANT_LIST_HACKS) return;
  1978.  
  1979.         const tag = "yt-live-chat-participant-list-renderer";
  1980.         const cProto = getProto(document.createElement(tag));
  1981.         if (!cProto || typeof cProto.attached !== 'function') {
  1982.           // for _registered, proto.attached shall exist when the element is defined.
  1983.           // for controller extraction, attached shall exist when instance creates.
  1984.           console.warn(`proto.attached for ${tag} is unavailable.`);
  1985.           return;
  1986.         }
  1987.  
  1988.  
  1989.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-participant-list-renderer hacks");
  1990.  
  1991.         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'];
  1992.         const fgs = {};
  1993.         for (const key of fgsArr) fgs[key] = undefined;
  1994.  
  1995.         try {
  1996.           const EXPERIMENT_FLAGS = ytcfg.data_.EXPERIMENT_FLAGS;
  1997.           for (const key of fgsArr) fgs[key] = EXPERIMENT_FLAGS[key];
  1998.         } catch (e) { }
  1999.         console.log(`EXPERIMENT_FLAGS: ${JSON.stringify(fgs, null, 2)}`);
  2000.  
  2001.         const canDoReplacement = (() => {
  2002.           if (typeof cProto.__notifyPath5035__ === 'function' && cProto.__notifyPath5035__.name !== 'dummy5035') {
  2003.             console.warn('YouTube Live Chat Tamer is running.');
  2004.             return;
  2005.           }
  2006.  
  2007.           if (typeof cProto.__attached411__ === 'function' && cProto.__attached411__.name !== 'dummy411') {
  2008.             console.warn('YouTube Live Chat Tamer is running.');
  2009.             return;
  2010.           }
  2011.  
  2012.           cProto.__notifyPath5035__ = dummy5035 // just to against Live Chat Tamer
  2013.           cProto.__attached411__ = dummy411 // just to against Live Chat Tamer
  2014.  
  2015.           if (typeof cProto.flushRenderStamperComponentBindings_ !== 'function' || cProto.flushRenderStamperComponentBindings_.length !== 0) {
  2016.             console.warn("ERROR(0xE355): cProto.flushRenderStamperComponentBindings_ not found");
  2017.             return;
  2018.           }
  2019.  
  2020.           if (typeof cProto.flushRenderStamperComponentBindings66_ === 'function') {
  2021.             console.warn("ERROR(0xE356): cProto.flushRenderStamperComponentBindings66_");
  2022.             return;
  2023.           }
  2024.  
  2025.           if (typeof cProto.__getAllParticipantsDOMRenderedLength__ === 'function') {
  2026.             console.warn("ERROR(0xE357): cProto.__getAllParticipantsDOMRenderedLength__");
  2027.             return;
  2028.           }
  2029.           return true;
  2030.         })();
  2031.  
  2032.         console.log(`Data Manipulation Boost = ${canDoReplacement}`);
  2033.  
  2034.         assertor(() => fnIntegrity(cProto.attached, '0.32.22')) // just warning
  2035.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2036.           const fiRSCB = fnIntegrity(cProto.flushRenderStamperComponentBindings_);
  2037.           const s = fiRSCB.split('.');
  2038.           if (s[0] === '0' && +s[1] > 381 && +s[1] < 391 && +s[2] > 228 && +s[2] < 238) {
  2039.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - OK`);
  2040.           } else {
  2041.             console.log(`flushRenderStamperComponentBindings_ ### ${fiRSCB} ### - Failed`);
  2042.           }
  2043.         } else {
  2044.           console.log("flushRenderStamperComponentBindings_ - not found");
  2045.         }
  2046.         // assertor(() => fnIntegrity(cProto.flushRenderStamperComponentBindings_, '0.386.233')) // just warning
  2047.  
  2048.         if (typeof cProto.flushRenderStamperComponentBindings_ === 'function') {
  2049.           cProto.flushRenderStamperComponentBindings66_ = cProto.flushRenderStamperComponentBindings_;
  2050.           cProto.flushRenderStamperComponentBindings_ = function () {
  2051.             // console.log('flushRenderStamperComponentBindings_')
  2052.             this.flushRenderStamperComponentBindings66_();
  2053.             if (this.resolveForDOMRendering781) {
  2054.               this.resolveForDOMRendering781();
  2055.               this.resolveForDOMRendering781 = null;
  2056.             }
  2057.           };
  2058.         }
  2059.  
  2060.         cProto.__getAllParticipantsDOMRenderedLength__ = function () {
  2061.           const container = ((this || 0).$ || 0).participants;
  2062.           if (!container) return 0;
  2063.           return HTMLElement.prototype.querySelectorAll.call(container, 'yt-live-chat-participant-renderer').length;
  2064.         }
  2065.  
  2066.         const onPageElements = [...document.querySelectorAll('yt-live-chat-participant-list-renderer:not(.n9fJ3)')];
  2067.  
  2068.         cProto.__attached412__ = cProto.attached;
  2069.         const fpPList = function (hostElement) {
  2070.           const cnt = hostElement.inst || hostElement;
  2071.           if (beforeParticipantsMap.has(cnt)) return;
  2072.           hostElement.classList.add('n9fJ3');
  2073.  
  2074.           assertor(() => (cnt.__dataEnabled === true && cnt.__dataReady === true));
  2075.           if (typeof cnt.notifyPath !== 'function' || typeof cnt.__notifyPath5036__ !== 'undefined') {
  2076.             console.warn("ERROR(0xE318): yt-live-chat-participant-list-renderer")
  2077.             return;
  2078.           }
  2079.  
  2080.           groupCollapsed("Participant List attached", "");
  2081.           // cnt.$.participants.appendChild = cnt.$.participants.__shady_native_appendChild =  function(){
  2082.           //   console.log(123, 'appendChild');
  2083.           //   return HTMLElement.prototype.appendChild.apply(this, arguments)
  2084.           // }
  2085.  
  2086.           // cnt.$.participants.insertBefore =cnt.$.participants.__shady_native_insertBefore =  function(){
  2087.           //   console.log(123, 'insertBefore');
  2088.           //   return HTMLElement.prototype.insertBefore.apply(this, arguments)
  2089.           // }
  2090.  
  2091.           cnt.__notifyPath5036__ = cnt.notifyPath
  2092.           const participants = ((cnt.participantsManager || 0).participants || 0);
  2093.           assertor(() => (participants.length > -1 && typeof participants.slice === 'function'));
  2094.           console.log(`initial number of participants: ${participants.length}`);
  2095.           const newParticipants = (participants.length >= 1 && typeof participants.slice === 'function') ? participants.slice(0) : [];
  2096.           beforeParticipantsMap.set(cnt, newParticipants);
  2097.           cnt.notifyPath = notifyPath7081;
  2098.           console.log(`CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT = ${CHECK_CHANGE_TO_PARTICIPANT_RENDERER_CONTENT}`);
  2099.           console.groupEnd();
  2100.         }
  2101.         cProto.attached = function () {
  2102.           fpPList(this.hostElement || this);
  2103.           this.__attached412__.apply(this, arguments);
  2104.         };
  2105.  
  2106.  
  2107.         if (ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST) {
  2108.  
  2109.           /** @type {boolean | (()=>boolean)} */
  2110.           let toUseMaintainStableList = USE_MAINTAIN_STABLE_LIST_ONLY_WHEN_KS_FLAG_IS_SET ? (() => ytcfg.data_.EXPERIMENT_FLAGS.kevlar_should_maintain_stable_list === true) : true;
  2111.           if (typeof cProto.stampDomArray_ === 'function' && cProto.stampDomArray_.length === 6 && !cProto.stampDomArray_.nIegT && !cProto.stampDomArray66_) {
  2112.  
  2113.             let lastMessageDate = 0;
  2114.             cProto.stampDomArray66_ = cProto.stampDomArray_;
  2115.  
  2116.             cProto.stampDomArray_ = function (...args) {
  2117.               if (args[0] && args[0].length > 0 && args[1] === "participants" && args[2] && args[3] === true && !args[5]) {
  2118.                 if (typeof toUseMaintainStableList === 'function') {
  2119.                   toUseMaintainStableList = toUseMaintainStableList();
  2120.                 }
  2121.                 args[5] = toUseMaintainStableList;
  2122.                 let currentDate = Date.now();
  2123.                 if (currentDate - lastMessageDate > 440) {
  2124.                   lastMessageDate = currentDate;
  2125.                   console.log('maintain_stable_list for participants list', toUseMaintainStableList);
  2126.                 }
  2127.               }
  2128.               return this.stampDomArray66_.apply(this, args);
  2129.             }
  2130.  
  2131.             cProto.stampDomArray_.nIegT = 1;
  2132.  
  2133.           }
  2134.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - YES`);
  2135.         } else {
  2136.           console.log(`ENABLE_FLAGS_MAINTAIN_STABLE_LIST_FOR_PARTICIPANTS_LIST - NO`);
  2137.         }
  2138.  
  2139.         console.groupEnd();
  2140.  
  2141.         if (onPageElements.length >= 1) {
  2142.           for (const s of onPageElements) {
  2143.             if ((s.inst || s).isAttached === true) {
  2144.               fpPList(s);
  2145.             }
  2146.           }
  2147.         }
  2148.  
  2149.       }).catch(console.warn);
  2150.  
  2151.     };
  2152.  
  2153.     if (DO_PARTICIPANT_LIST_HACKS) {
  2154.       promiseForCustomYtElementsReady.then(onRegistryReadyForDataManipulation);
  2155.     }
  2156.  
  2157.  
  2158.  
  2159.     const rafHub = (ENABLE_RAF_HACK_TICKERS || ENABLE_RAF_HACK_DOCKED_MESSAGE || ENABLE_RAF_HACK_INPUT_RENDERER || ENABLE_RAF_HACK_EMOJI_PICKER) ? new RAFHub() : null;
  2160.  
  2161.  
  2162.  
  2163.  
  2164.     const bnForDelayChatOccurrence = () => {
  2165.  
  2166.       document.addEventListener('animationstart', (evt) => {
  2167.  
  2168.         if (evt.animationName === 'dontRenderAnimation') {
  2169.           evt.target.classList.remove('dont-render');
  2170.           if (scrollChatFn) scrollChatFn();
  2171.         }
  2172.  
  2173.       }, true);
  2174.  
  2175.       const f = (elm) => {
  2176.         if (elm && elm.nodeType === 1) {
  2177.           if (!skipDontRender && allowDontRender === true) {
  2178.             // innerTextFixFn();
  2179.             elm.classList.add('dont-render');
  2180.           }
  2181.         }
  2182.       }
  2183.  
  2184.       Node.prototype.__appendChild931__ = function (a) {
  2185.         a = dr(a);
  2186.         if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) {
  2187.           if (a && a.nodeType === 1) f(a);
  2188.           else if (a instanceof DocumentFragment) {
  2189.             for (let n = a.firstChild; n; n = n.nextSibling) {
  2190.               f(n);
  2191.             }
  2192.           }
  2193.         }
  2194.       }
  2195.  
  2196.       Node.prototype.__appendChild932__ = function () {
  2197.         this.__appendChild931__.apply(this, arguments);
  2198.         return Node.prototype.appendChild.apply(this, arguments);
  2199.       }
  2200.  
  2201.  
  2202.     };
  2203.  
  2204.     const watchUserCSS = () => {
  2205.  
  2206.       // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return;
  2207.  
  2208.       const getElemFromWR = (nr) => {
  2209.         const n = kRef(nr);
  2210.         if (n && n.isConnected) return n;
  2211.         return null;
  2212.       }
  2213.  
  2214.       const clearContentVisibilitySizing = () => {
  2215.         Promise.resolve().then(() => {
  2216.  
  2217.           const e = document.querySelector('#show-more[disabled]');
  2218.           let btnShowMoreWR = e ? mWeakRef(e) : null;
  2219.  
  2220.           let lastVisibleItemWR = null;
  2221.           for (const elm of document.querySelectorAll('[wSr93]')) {
  2222.             if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm);
  2223.             elm.setAttribute('wSr93', '');
  2224.             // custom CSS property --wsr94 not working when attribute wSr93 removed
  2225.           }
  2226.           requestAnimationFrame(() => {
  2227.             const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null;
  2228.             if (btnShowMore) btnShowMore.click();
  2229.             else {
  2230.               // would not work if switch it frequently
  2231.               const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null;
  2232.               if (lastVisibleItem) {
  2233.  
  2234.                 Promise.resolve()
  2235.                   .then(() => lastVisibleItem.scrollIntoView())
  2236.                   .then(() => lastVisibleItem.scrollIntoView(false))
  2237.                   .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" }))
  2238.                   .catch(e => { }) // break the chain when method not callable
  2239.  
  2240.               }
  2241.             }
  2242.           });
  2243.  
  2244.         });
  2245.  
  2246.       }
  2247.  
  2248.       const mutObserver = new MutationObserver((mutations) => {
  2249.         for (const mutation of mutations) {
  2250.           if ((mutation.addedNodes || 0).length >= 1) {
  2251.             for (const addedNode of mutation.addedNodes) {
  2252.               if (addedNode.nodeName === 'STYLE') {
  2253.                 clearContentVisibilitySizing();
  2254.                 return;
  2255.               }
  2256.             }
  2257.           }
  2258.           if ((mutation.removedNodes || 0).length >= 1) {
  2259.             for (const removedNode of mutation.removedNodes) {
  2260.               if (removedNode.nodeName === 'STYLE') {
  2261.                 clearContentVisibilitySizing();
  2262.                 return;
  2263.               }
  2264.             }
  2265.           }
  2266.         }
  2267.       });
  2268.  
  2269.       mutObserver.observe(document.documentElement, {
  2270.         childList: true,
  2271.         subtree: false
  2272.       });
  2273.       mutObserver.observe(document.head, {
  2274.         childList: true,
  2275.         subtree: false
  2276.       });
  2277.       mutObserver.observe(document.body, {
  2278.         childList: true,
  2279.         subtree: false
  2280.       });
  2281.  
  2282.     }
  2283.  
  2284.  
  2285.     class WillChangeController {
  2286.       constructor(itemScroller, willChangeValue) {
  2287.         this.element = itemScroller;
  2288.         this.counter = 0;
  2289.         this.active = false;
  2290.         this.willChangeValue = willChangeValue;
  2291.       }
  2292.  
  2293.       beforeOper() {
  2294.         if (!this.active) {
  2295.           this.active = true;
  2296.           this.element.style.willChange = this.willChangeValue;
  2297.         }
  2298.         this.counter++;
  2299.       }
  2300.  
  2301.       afterOper() {
  2302.         const c = this.counter;
  2303.         requestAnimationFrame(() => {
  2304.           if (c === this.counter) {
  2305.             this.active = false;
  2306.             this.element.style.willChange = '';
  2307.           }
  2308.         });
  2309.       }
  2310.  
  2311.       release() {
  2312.         const element = this.element;
  2313.         this.element = null;
  2314.         this.counter = 1e16;
  2315.         this.active = false;
  2316.         try {
  2317.           element.style.willChange = '';
  2318.         } catch (e) { }
  2319.       }
  2320.  
  2321.     }
  2322.  
  2323.  
  2324.     const skzData = (skz) => skz.data = {
  2325.       "message": {
  2326.         "runs": [
  2327.           {
  2328.             "text": "em2o"
  2329.           },
  2330.           {
  2331.             "emoji": {
  2332.               "emojiId": "cm35z",
  2333.               "shortcuts": [
  2334.                 ":_s:",
  2335.                 ":s:"
  2336.               ],
  2337.               "searchTerms": [
  2338.                 "_s",
  2339.                 "s"
  2340.               ],
  2341.               "image": {
  2342.                 "thumbnails": [
  2343.                   {
  2344.                     "url": dummyImgURL,
  2345.                     "width": 48,
  2346.                     "height": 48
  2347.                   }
  2348.                 ],
  2349.                 "accessibility": {
  2350.                   "accessibilityData": {
  2351.                     "label": "s"
  2352.                   }
  2353.                 }
  2354.               },
  2355.               "isCustomEmoji": true
  2356.             }
  2357.           },
  2358.           {
  2359.             "text": "ji"
  2360.           }
  2361.         ]
  2362.       },
  2363.       "authorName": {
  2364.         "simpleText": "N"
  2365.       },
  2366.       "authorPhoto": {
  2367.         "thumbnails": [
  2368.           {
  2369.             "url": dummyImgURL,
  2370.             "width": 64,
  2371.             "height": 64
  2372.           }
  2373.         ]
  2374.       },
  2375.       "contextMenuEndpoint": {
  2376.         "commandMetadata": {
  2377.           "webCommandMetadata": {
  2378.             "ignoreNavigation": true
  2379.           }
  2380.         },
  2381.         "liveChatItemContextMenuEndpoint": {
  2382.           "params": "123=="
  2383.         }
  2384.       },
  2385.       "id": "sk35z",
  2386.       "timestampUsec": "1232302352350000",
  2387.       "authorBadges": [
  2388.         {
  2389.           "liveChatAuthorBadgeRenderer": {
  2390.             "customThumbnail": {
  2391.               "thumbnails": [
  2392.                 {
  2393.                   "url": dummyImgURL,
  2394.                   "width": 16,
  2395.                   "height": 16
  2396.                 },
  2397.                 {
  2398.                   "url": dummyImgURL,
  2399.                   "width": 32,
  2400.                   "height": 32
  2401.                 }
  2402.               ]
  2403.             },
  2404.             "tooltip": "T",
  2405.             "accessibility": {
  2406.               "accessibilityData": {
  2407.                 "label": "E"
  2408.               }
  2409.             }
  2410.           }
  2411.         }
  2412.       ],
  2413.       "authorExternalChannelId": "A",
  2414.       "contextMenuAccessibility": {
  2415.         "accessibilityData": {
  2416.           "label": "E"
  2417.         }
  2418.       },
  2419.       "timestampText": {
  2420.         "simpleText": "0:43"
  2421.       }
  2422.     };
  2423.  
  2424.  
  2425.  
  2426.     const { lcRendererElm, visObserver } = (() => {
  2427.  
  2428.  
  2429.  
  2430.       let lcRendererWR = null;
  2431.  
  2432.       const lcRendererElm = () => {
  2433.         let lcRenderer = kRef(lcRendererWR);
  2434.         if (!lcRenderer || !lcRenderer.isConnected) {
  2435.           lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer');
  2436.           lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null;
  2437.         }
  2438.         return lcRenderer;
  2439.       };
  2440.  
  2441.  
  2442.       let hasFirstShowMore = false;
  2443.  
  2444.       const visObserverFn = (entry) => {
  2445.  
  2446.         const target = entry.target;
  2447.         if (!target) return;
  2448.         // if(target.classList.contains('dont-render')) return;
  2449.         let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5;
  2450.         // const h = entry.boundingClientRect.height;
  2451.         /*
  2452.         if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20
  2453.             // e.g. under fullscreen. the element created but not rendered.
  2454.             target.setAttribute('wSr93', '');
  2455.             return;
  2456.         }
  2457.         */
  2458.         if (isVisible) {
  2459.           // target.style.setProperty('--wsr94', h + 'px');
  2460.           target.setAttribute('wSr93', 'visible');
  2461.           if (nNextElem(target) === null) {
  2462.  
  2463.             // firstVisibleItemDetected = true;
  2464.             /*
  2465.               if (dateNow() - lastScroll < 80) {
  2466.                   lastLShow = 0;
  2467.                   lastScroll = 0;
  2468.                   Promise.resolve().then(clickShowMore);
  2469.               } else {
  2470.                   lastLShow = dateNow();
  2471.               }
  2472.               */
  2473.             // lastLShow = dateNow();
  2474.           } else if (!hasFirstShowMore) { // should more than one item being visible
  2475.             // implement inside visObserver to ensure there is sufficient delay
  2476.             hasFirstShowMore = true;
  2477.             requestAnimationFrame(() => {
  2478.               // foreground page
  2479.               // page visibly ready -> load the latest comments at initial loading
  2480.               const lcRenderer = lcRendererElm();
  2481.               if (lcRenderer) {
  2482.                 (lcRenderer.inst || lcRenderer).scrollToBottom_();
  2483.               }
  2484.             });
  2485.           }
  2486.         }
  2487.         else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing
  2488.  
  2489.           // target.style.setProperty('--wsr94', h + 'px');
  2490.           target.setAttribute('wSr93', 'hidden');
  2491.         } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' <new last item>
  2492.  
  2493.       }
  2494.  
  2495.  
  2496.  
  2497.       const visObserver = new IntersectionObserver((entries) => {
  2498.  
  2499.         for (const entry of entries) {
  2500.  
  2501.           Promise.resolve(entry).then(visObserverFn);
  2502.  
  2503.         }
  2504.  
  2505.       }, {
  2506.         // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable
  2507.         rootMargin: "0px",
  2508.         threshold: [0.05, 0.95],
  2509.       });
  2510.  
  2511.  
  2512.       return { lcRendererElm, visObserver }
  2513.  
  2514.  
  2515.     })();
  2516.  
  2517.     const { setupMutObserver } = (() => {
  2518.  
  2519.       const mutFn = (items) => {
  2520.         for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) {
  2521.           if (node.hasAttribute('wSr93')) break;
  2522.           node.setAttribute('wSr93', '');
  2523.           visObserver.observe(node);
  2524.         }
  2525.       }
  2526.  
  2527.       const mutObserver = new MutationObserver((mutations) => {
  2528.         const items = (mutations[0] || 0).target;
  2529.         if (!items) return;
  2530.         if (sk35zResolveFn) {
  2531.           sk35zResolveFn();
  2532.           sk35zResolveFn = null;
  2533.         }
  2534.         mutFn(items);
  2535.       });
  2536.  
  2537.       const setupMutObserver = (m2) => {
  2538.         scrollChatFn = null;
  2539.         mutObserver.disconnect();
  2540.         mutObserver.takeRecords();
  2541.         if (m2) {
  2542.           ENABLE_DELAYED_CHAT_OCCURRENCE && bnForDelayChatOccurrence();
  2543.           if (typeof m2.__appendChild932__ === 'function') {
  2544.             if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__;
  2545.             if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__;
  2546.           }
  2547.           mutObserver.observe(m2, {
  2548.             childList: true,
  2549.             subtree: false
  2550.           });
  2551.           mutFn(m2);
  2552.  
  2553.           const isFirstList = firstList;
  2554.           firstList = false;
  2555.  
  2556.           if (ENABLE_OVERFLOW_ANCHOR) {
  2557.  
  2558.             let items = m2;
  2559.             let addedAnchor = false;
  2560.             if (items) {
  2561.               if (items.nextElementSibling === null) {
  2562.                 items.classList.add('no-anchor');
  2563.                 addedAnchor = true;
  2564.                 items.parentNode.appendChild(dr(document.createElement('item-anchor')));
  2565.               }
  2566.             }
  2567.  
  2568.  
  2569.  
  2570.             if (addedAnchor) {
  2571.               nodeParent(m2).classList.add('no-anchor'); // required
  2572.             }
  2573.  
  2574.           }
  2575.  
  2576.           // let div = document.createElement('div');
  2577.           // div.id = 'qwcc';
  2578.           // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div )
  2579.           // bufferRegion =div;
  2580.  
  2581.           // buffObserver.takeRecords();
  2582.           // buffObserver.disconnect();
  2583.           // buffObserver.observe(div,  {
  2584.           //     childList: true,
  2585.           //     subtree: false
  2586.           // })
  2587.  
  2588.           if (ENABLE_DELAYED_CHAT_OCCURRENCE && isFirstList) {
  2589.  
  2590.             promiseForCustomYtElementsReady.then(() => {
  2591.  
  2592.               customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  2593.  
  2594.  
  2595.  
  2596.  
  2597.                 setTimeout(() => {
  2598.  
  2599.                   /** @type {HTMLTemplateElement} */
  2600.                   let skz = document.createElement('yt-live-chat-text-message-renderer');
  2601.  
  2602.                   let cz1 = null;
  2603.  
  2604.                   if (skz && 'data' in skz && 'attached' in skz) {
  2605.  
  2606.                     const deferredZy1 = new Promise(resolve => {
  2607.  
  2608.                       skz.attached = function () {
  2609.                         cz1 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2610.                         resolve(skz.textContent);
  2611.                       }
  2612.                       skz.detached = function () {
  2613.  
  2614.                       }
  2615.  
  2616.                     });
  2617.                     skz.id = 'sk35z';
  2618.                     skzData(skz);
  2619.  
  2620.  
  2621.                     sk35zResolveFn = null;
  2622.                     const deferredMutation = new Promise(resolve => {
  2623.                       sk35zResolveFn = resolve;
  2624.                       HTMLElement.prototype.appendChild.call(m2, skz);
  2625.                     });
  2626.  
  2627.                     Promise.all([deferredZy1, deferredMutation]).then(async (res) => {
  2628.                       const [zy1, _] = res;
  2629.                       function fn() {
  2630.                         const zy2 = skz.textContent;
  2631.                         const cz2 = HTMLElement.prototype.querySelector.call(skz, '#message img') !== null;
  2632.                         if (typeof zy1 === 'string' && typeof zy2 === 'string') {
  2633.                           allowDontRender = zy1 === zy2 && cz1 === cz2; // '0:43N​em2oji'
  2634.                         }
  2635.                         if (allowDontRender === false) {
  2636.  
  2637.                           console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2638.                             "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2639.                             "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2640.                           );
  2641.  
  2642.                           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');
  2643.  
  2644.                           console.groupEnd();
  2645.                         } else if (allowDontRender === true) {
  2646.                           return true;
  2647.                         }
  2648.                       }
  2649.                       await new Promise(r => setTimeout(r, 1));
  2650.                       if (fn()) {
  2651.                         await new Promise(r => requestAnimationFrame(r));
  2652.                         if (fn()) {
  2653.                           skz.remove();
  2654.                           skz.textContent = '';
  2655.                           console.log('%cALLOW_DELAYED_CHAT_OCCURRENCE', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2656.                         }
  2657.                       }
  2658.                     });
  2659.  
  2660.                   }
  2661.  
  2662.                 }, 1);
  2663.  
  2664.               }).catch(console.warn);
  2665.  
  2666.             })
  2667.  
  2668.           }
  2669.  
  2670.  
  2671.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  2672.  
  2673.             (() => {
  2674.  
  2675.               const tag = 'yt-iframed-player-events-relay'
  2676.               const dummy = document.createElement(tag);
  2677.  
  2678.               const cProto = getProto(dummy);
  2679.               if (!cProto || !cProto.handlePostMessage_) {
  2680.                 console.warn(`proto.handlePostMessage_ for ${tag} is unavailable.`);
  2681.                 return;
  2682.               }
  2683.  
  2684.               if (typeof cProto.handlePostMessage_ === 'function' && !cProto.handlePostMessage66_) {
  2685.  
  2686.                 cProto.handlePostMessage66_ = cProto.handlePostMessage_;
  2687.  
  2688.                 cProto.handlePostMessage_ = function (a) {
  2689.  
  2690.                   const da = (a || 0).data || 0;
  2691.                   if (typeof da === 'object') {
  2692.  
  2693.                     // console.log('handlePostMessage_', da)
  2694.                     const qc = da['yt-player-state-change'];
  2695.                     if (qc === 3) { // pause
  2696.                       pairForPauseResume++;
  2697.                       pairForPauseResumeM++;
  2698.                     } else if (qc === 1) { // pause
  2699.                       pairForPauseResume++;
  2700.                       pairForPauseResumeM++;
  2701.                     } else if (qc === 2) {
  2702.                       pairForPauseResume++;
  2703.                       pairForPauseResumeM++;
  2704.                     }
  2705.                     if (pairForPauseResume > 1e9) pairForPauseResume = pairForPauseResume % 1e4;
  2706.                     if (pairForPauseResumeM > 1e9) pairForPauseResumeM = pairForPauseResumeM % 1e4;
  2707.                     return this.handlePostMessage66_(a);
  2708.  
  2709.                   }
  2710.  
  2711.  
  2712.                 }
  2713.  
  2714.               }
  2715.  
  2716.  
  2717.             })();
  2718.  
  2719.           }
  2720.  
  2721.           if (isFirstList && DO_CHECK_TICKER_BACKGROUND_OVERRIDED) {
  2722.             setTimeout(() => {
  2723.               if (!hasTimerModified) return;
  2724.               const tickerRenderer = document.querySelector('#ticker yt-live-chat-ticker-renderer.style-scope.yt-live-chat-renderer');
  2725.               if (!tickerRenderer) return;
  2726.  
  2727.               const items = (tickerRenderer.$ || 0).items || 0;
  2728.               if (!items) return;
  2729.               const template = document.createElement('template');
  2730.               template.innerHTML = `<yt-live-chat-ticker-dummy777-item-renderer class="style-scope yt-live-chat-ticker-renderer" whole-message-clickable=""
  2731.                 modern="" aria-label="¥1,000" role="button" tabindex="0" id="Chw777" style="width: 94px; overflow: hidden;"
  2732.                 dimmed="" [dummy777]>
  2733.                 <div id="container" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer"
  2734.                   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));">
  2735.                   <div id="content" class="style-scope yt-live-chat-ticker-dummy777-item-renderer" style="color: rgb(255, 255, 255);">
  2736.                     <yt-img-shadow777 id="author-photo" height="24" width="24"
  2737.                       class="style-scope yt-live-chat-ticker-dummy777-item-renderer no-transition"
  2738.                       style="background-color: transparent;" loaded=""><img id="img"
  2739.                         draggable="false" class="style-scope yt-img-shadow" alt="I" height="24" width="24"
  2740.                         src="${dummyImgURL}"></yt-img-shadow777>
  2741.  
  2742.                     <span id="text" dir="ltr" class="style-scope yt-live-chat-ticker-dummy777-item-renderer">¥1,000</span>
  2743.                   </div>
  2744.                 </div>
  2745.               </yt-live-chat-ticker-dummy777-item-renderer>`;
  2746.               const dummy777 = template.content.firstElementChild;
  2747.               items.appendChild(dummy777);
  2748.               Promise.resolve(dummy777).then((dummy777) => {
  2749.                 let container = HTMLElement.prototype.querySelector.call(dummy777, '#container') || 0;
  2750.                 if (container.isConnected === true) {
  2751.  
  2752.                   const evaluated = `${window.getComputedStyle(container).background}`;
  2753.  
  2754.                   container = null;
  2755.                   dummy777.remove();
  2756.                   dummy777.textContent = '';
  2757.                   dummy777 = null;
  2758.  
  2759.                   if (evaluated.indexOf('0.') < 4) {
  2760.  
  2761.                     // not fulfilling
  2762.                     // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  2763.  
  2764.                     console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  2765.                       "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  2766.                       "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  2767.                     );
  2768.                     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');
  2769.                     console.groupEnd();
  2770.  
  2771.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND (Overriding other scripting)', 'background-color: #7eb32b; color: #102624; padding: 2px 4px');
  2772.  
  2773.                   } else {
  2774.  
  2775.                     console.log('%cALLOW_ADVANCED_ANIMATED_TICKER_BACKGROUND', 'background-color: #16c450; color: #102624; padding: 2px 4px');
  2776.                   }
  2777.                 }
  2778.               });
  2779.  
  2780.             }, 800);
  2781.           }
  2782.  
  2783.         }
  2784.       }
  2785.  
  2786.       return { setupMutObserver };
  2787.  
  2788.  
  2789.  
  2790.     })();
  2791.  
  2792.     const setupEvents = () => {
  2793.  
  2794.  
  2795.       let scrollCount = 0;
  2796.  
  2797.       const passiveCapture = typeof IntersectionObserver === 'function' ? { capture: true, passive: true } : true;
  2798.  
  2799.  
  2800.       const delayFlushActiveItemsAfterUserActionK_ = () => {
  2801.  
  2802.         const lcRenderer = lcRendererElm();
  2803.         if (lcRenderer) {
  2804.           const cnt = (lcRenderer.inst || lcRenderer);
  2805.           if (!cnt.hasUserJustInteracted11_) return;
  2806.           if (cnt.atBottom && cnt.allowScroll && cnt.activeItems_.length >= 1 && cnt.hasUserJustInteracted11_()) {
  2807.             cnt.delayFlushActiveItemsAfterUserAction11_ && cnt.delayFlushActiveItemsAfterUserAction11_();
  2808.           }
  2809.         }
  2810.  
  2811.       }
  2812.  
  2813.       document.addEventListener('scroll', (evt) => {
  2814.         if (!evt || !evt.isTrusted) return;
  2815.         // lastScroll = dateNow();
  2816.         if (++scrollCount > 1e9) scrollCount = 9;
  2817.       }, passiveCapture); // support contain => support passive
  2818.  
  2819.       let lastScrollCount = -1;
  2820.       document.addEventListener('wheel', (evt) => {
  2821.         if (!evt || !evt.isTrusted) return;
  2822.         if (lastScrollCount === scrollCount) return;
  2823.         lastScrollCount = scrollCount;
  2824.         lastWheel = dateNow();
  2825.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2826.       }, passiveCapture); // support contain => support passive
  2827.  
  2828.       document.addEventListener('mousedown', (evt) => {
  2829.         if (!evt || !evt.isTrusted) return;
  2830.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2831.         lastMouseDown = dateNow();
  2832.         currentMouseDown = true;
  2833.         lastUserInteraction = lastMouseDown;
  2834.       }, passiveCapture);
  2835.  
  2836.       document.addEventListener('pointerdown', (evt) => {
  2837.         if (!evt || !evt.isTrusted) return;
  2838.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2839.         lastMouseDown = dateNow();
  2840.         currentMouseDown = true;
  2841.         lastUserInteraction = lastMouseDown;
  2842.       }, passiveCapture);
  2843.  
  2844.       document.addEventListener('click', (evt) => {
  2845.         if (!evt || !evt.isTrusted) return;
  2846.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2847.         lastMouseDown = lastMouseUp = dateNow();
  2848.         currentMouseDown = false;
  2849.         lastUserInteraction = lastMouseDown;
  2850.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2851.       }, passiveCapture);
  2852.  
  2853.       document.addEventListener('tap', (evt) => {
  2854.         if (!evt || !evt.isTrusted) return;
  2855.         if (((evt || 0).target || 0).id !== 'item-scroller') return;
  2856.         lastMouseDown = lastMouseUp = dateNow();
  2857.         currentMouseDown = false;
  2858.         lastUserInteraction = lastMouseDown;
  2859.         delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2860.       }, passiveCapture);
  2861.  
  2862.  
  2863.       document.addEventListener('mouseup', (evt) => {
  2864.         if (!evt || !evt.isTrusted) return;
  2865.         if (currentMouseDown) {
  2866.           lastMouseUp = dateNow();
  2867.           currentMouseDown = false;
  2868.           lastUserInteraction = lastMouseUp;
  2869.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2870.         }
  2871.       }, passiveCapture);
  2872.  
  2873.  
  2874.       document.addEventListener('pointerup', (evt) => {
  2875.         if (!evt || !evt.isTrusted) return;
  2876.         if (currentMouseDown) {
  2877.           lastMouseUp = dateNow();
  2878.           currentMouseDown = false;
  2879.           lastUserInteraction = lastMouseUp;
  2880.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2881.         }
  2882.       }, passiveCapture);
  2883.  
  2884.       document.addEventListener('touchstart', (evt) => {
  2885.         if (!evt || !evt.isTrusted) return;
  2886.         lastTouchDown = dateNow();
  2887.         currentTouchDown = true;
  2888.         lastUserInteraction = lastTouchDown;
  2889.       }, passiveCapture);
  2890.  
  2891.       document.addEventListener('touchmove', (evt) => {
  2892.         if (!evt || !evt.isTrusted) return;
  2893.         lastTouchDown = dateNow();
  2894.         currentTouchDown = true;
  2895.         lastUserInteraction = lastTouchDown;
  2896.       }, passiveCapture);
  2897.  
  2898.       document.addEventListener('touchend', (evt) => {
  2899.         if (!evt || !evt.isTrusted) return;
  2900.         if (currentTouchDown) {
  2901.           lastTouchUp = dateNow();
  2902.           currentTouchDown = false;
  2903.           lastUserInteraction = lastTouchUp;
  2904.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2905.         }
  2906.       }, passiveCapture);
  2907.  
  2908.       document.addEventListener('touchcancel', (evt) => {
  2909.         if (!evt || !evt.isTrusted) return;
  2910.         if (currentTouchDown) {
  2911.           lastTouchUp = dateNow();
  2912.           currentTouchDown = false;
  2913.           lastUserInteraction = lastTouchUp;
  2914.           delayFlushActiveItemsAfterUserActionK_ && delayFlushActiveItemsAfterUserActionK_();
  2915.         }
  2916.       }, passiveCapture);
  2917.  
  2918.  
  2919.     }
  2920.  
  2921.  
  2922.     const onRegistryReadyForDOMOperations = () => {
  2923.  
  2924.       let firstCheckedOnYtInit = false;
  2925.  
  2926.       const assertorURL = () => assertor(() => location.pathname.startsWith('/live_chat') && (location.search.indexOf('continuation=') > 0 || location.search.indexOf('v=') > 0));
  2927.  
  2928.       const mightFirstCheckOnYtInit = () => {
  2929.         if (firstCheckedOnYtInit) return;
  2930.         firstCheckedOnYtInit = true;
  2931.  
  2932.         if (!document.body || !document.head) return;
  2933.         if (!assertorURL()) return;
  2934.  
  2935.         addCssManaged();
  2936.  
  2937.         let efsContainer = document.getElementById('elzm-fonts-yk75g');
  2938.         if (efsContainer && efsContainer.parentNode !== document.body) {
  2939.           document.body.appendChild(efsContainer);
  2940.         }
  2941.  
  2942.       };
  2943.  
  2944.       if (!assertorURL()) return;
  2945.       // if (!assertor(() => document.getElementById('yt-masthead') === null)) return;
  2946.  
  2947.       if (document.documentElement && document.head) {
  2948.         addCssManaged();
  2949.       }
  2950.       // console.log(document.body===null)
  2951.  
  2952.       customElements.whenDefined('yt-live-chat-item-list-renderer').then(() => {
  2953.  
  2954.         const tag = "yt-live-chat-item-list-renderer"
  2955.         const dummy = document.createElement(tag);
  2956.  
  2957.         const cProto = getProto(dummy);
  2958.         if (!cProto || !cProto.attached) {
  2959.           console.warn(`proto.attached for ${tag} is unavailable.`);
  2960.           return;
  2961.         }
  2962.  
  2963.         mightFirstCheckOnYtInit();
  2964.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-item-list-renderer hacks");
  2965.         console.log("[Begin]");
  2966.  
  2967.         const mclp = cProto;
  2968.         try {
  2969.           assertor(() => typeof mclp.scrollToBottom_ === 'function');
  2970.           assertor(() => typeof mclp.flushActiveItems_ === 'function');
  2971.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  2972.           assertor(() => typeof mclp.setAtBottom === 'function');
  2973.           assertor(() => typeof mclp.scrollToBottom66_ === 'undefined');
  2974.           assertor(() => typeof mclp.flushActiveItems66_ === 'undefined');
  2975.         } catch (e) { }
  2976.  
  2977.  
  2978.         try {
  2979.           assertor(() => typeof mclp.attached === 'function');
  2980.           assertor(() => typeof mclp.detached === 'function');
  2981.           assertor(() => typeof mclp.canScrollToBottom_ === 'function');
  2982.           assertor(() => typeof mclp.isSmoothScrollEnabled_ === 'function');
  2983.           assertor(() => typeof mclp.maybeResizeScrollContainer_ === 'function');
  2984.           assertor(() => typeof mclp.refreshOffsetContainerHeight_ === 'function');
  2985.           assertor(() => typeof mclp.smoothScroll_ === 'function');
  2986.           assertor(() => typeof mclp.resetSmoothScroll_ === 'function');
  2987.         } catch (e) { }
  2988.  
  2989.         mclp.__intermediate_delay__ = null;
  2990.  
  2991.         let mzk = 0;
  2992.         let myk = 0;
  2993.         let mlf = 0;
  2994.         let myw = 0;
  2995.         let mzt = 0;
  2996.         let zarr = null;
  2997.         let mlg = 0;
  2998.  
  2999.         if ((mclp.clearList || 0).length === 0) {
  3000.           assertor(() => fnIntegrity(mclp.clearList, '0.106.50'));
  3001.           mclp.clearList66 = mclp.clearList;
  3002.           mclp.clearList = function () {
  3003.             mzk++;
  3004.             myk++;
  3005.             mlf++;
  3006.             myw++;
  3007.             mzt++;
  3008.             mlg++;
  3009.             zarr = null;
  3010.             this.__intermediate_delay__ = null;
  3011.             this.clearList66();
  3012.           };
  3013.           console.log("clearList", "OK");
  3014.         } else {
  3015.           console.log("clearList", "NG");
  3016.         }
  3017.  
  3018.  
  3019.         let onListRendererAttachedDone = false;
  3020.  
  3021.         function setList(itemOffset, items) {
  3022.  
  3023.           const isFirstTime = onListRendererAttachedDone === false;
  3024.  
  3025.           if (isFirstTime) {
  3026.             onListRendererAttachedDone = true;
  3027.             Promise.resolve().then(watchUserCSS);
  3028.             addCssManaged();
  3029.             setupEvents();
  3030.           }
  3031.  
  3032.           setupStyle(itemOffset, items);
  3033.  
  3034.           setupMutObserver(items);
  3035.         }
  3036.  
  3037.         mclp.attached419 = async function () {
  3038.  
  3039.           if (!this.isAttached) return;
  3040.  
  3041.           let maxTrial = 16;
  3042.           while (!this.$ || !this.$['item-scroller'] || !this.$['item-offset'] || !this.$['items']) {
  3043.             if (--maxTrial < 0 || !this.isAttached) return;
  3044.             await new Promise(requestAnimationFrame);
  3045.           }
  3046.  
  3047.           if (this.isAttached !== true) return;
  3048.  
  3049.           if (!this.$) {
  3050.             console.warn("!this.$");
  3051.             return;
  3052.           }
  3053.           if (!this.$) return;
  3054.           /** @type {HTMLElement | null} */
  3055.           const itemScroller = this.$['item-scroller'];
  3056.           /** @type {HTMLElement | null} */
  3057.           const itemOffset = this.$['item-offset'];
  3058.           /** @type {HTMLElement | null} */
  3059.           const items = this.$['items'];
  3060.  
  3061.           if (!itemScroller || !itemOffset || !items) {
  3062.             console.warn("items.parentNode !== itemOffset");
  3063.             return;
  3064.           }
  3065.  
  3066.           if (nodeParent(items) !== itemOffset) {
  3067.  
  3068.             console.warn("items.parentNode !== itemOffset");
  3069.             return;
  3070.           }
  3071.  
  3072.  
  3073.           if (items.id !== 'items' || itemOffset.id !== "item-offset") {
  3074.  
  3075.             console.warn("id incorrect");
  3076.             return;
  3077.           }
  3078.  
  3079.           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')
  3080.  
  3081.           if (!isTargetItems) {
  3082.             console.warn("!isTargetItems");
  3083.             return;
  3084.           }
  3085.  
  3086.           setList(itemOffset, items);
  3087.  
  3088.         }
  3089.  
  3090.         mclp.attached331 = mclp.attached;
  3091.         mclp.attached = function () {
  3092.           this.attached419 && this.attached419();
  3093.           return this.attached331();
  3094.         }
  3095.  
  3096.         mclp.detached331 = mclp.detached;
  3097.  
  3098.         mclp.detached = function () {
  3099.           setupMutObserver();
  3100.           return this.detached331();
  3101.         }
  3102.  
  3103.         const t29s = document.querySelectorAll("yt-live-chat-item-list-renderer");
  3104.         for (const t29 of t29s) {
  3105.           if ((t29.inst || t29).isAttached === true) {
  3106.             t29.attached419();
  3107.           }
  3108.         }
  3109.  
  3110.         if ((mclp.async || 0).length === 2 && (mclp.cancelAsync || 0).length === 1) {
  3111.  
  3112.           assertor(() => fnIntegrity(mclp.async, '2.24.15'));
  3113.           assertor(() => fnIntegrity(mclp.cancelAsync, '1.15.8'));
  3114.  
  3115.           /** @type {Map<number, any>} */
  3116.           const aMap = new Map();
  3117.           let count = 6150;
  3118.           mclp.async66 = mclp.async;
  3119.           mclp.async = function (e, f) {
  3120.             // ensure the previous operation is done
  3121.             // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_
  3122.             const hasF = arguments.length === 2;
  3123.             const stack = new Error().stack;
  3124.             const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0;
  3125.             if (count > 1e9) count = 6159;
  3126.             const resId = ++count;
  3127.             aMap.set(resId, e);
  3128.             (this.__intermediate_delay__ || Promise.resolve()).then(rk => {
  3129.               const rp = aMap.get(resId);
  3130.               if (typeof rp !== 'function') {
  3131.                 return;
  3132.               }
  3133.               let cancelCall = false;
  3134.               if (isFlushAsync) {
  3135.                 if (rk < 0) {
  3136.                   cancelCall = true;
  3137.                 } else if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) {
  3138.                   cancelCall = true;
  3139.                 }
  3140.               }
  3141.               if (cancelCall) {
  3142.                 aMap.delete(resId);
  3143.               } else {
  3144.                 const asyncEn = function () {
  3145.                   aMap.delete(resId);
  3146.                   return rp.apply(this, arguments);
  3147.                 };
  3148.                 aMap.set(resId, hasF ? this.async66(asyncEn, f) : this.async66(asyncEn));
  3149.               }
  3150.             });
  3151.  
  3152.             return resId;
  3153.           }
  3154.  
  3155.           mclp.cancelAsync66 = mclp.cancelAsync;
  3156.           mclp.cancelAsync = function (resId) {
  3157.             if (resId <= 6150) {
  3158.               this.cancelAsync66(resId);
  3159.             } else if (aMap.has(resId)) {
  3160.               const rp = aMap.get(resId);
  3161.               aMap.delete(resId);
  3162.               if (typeof rp !== 'function') {
  3163.                 this.cancelAsync66(rp);
  3164.               }
  3165.             }
  3166.           }
  3167.  
  3168.           console.log("async", "OK");
  3169.         } else {
  3170.           console.log("async", "NG");
  3171.         }
  3172.  
  3173.  
  3174.         if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) {
  3175.  
  3176.           assertor(() => fnIntegrity(mclp.showNewItems_, '0.170.79'));
  3177.           mclp.showNewItems66_ = mclp.showNewItems_;
  3178.  
  3179.           mclp.showNewItems77_ = async function () {
  3180.             if (myk > 1e9) myk = 9;
  3181.             let tid = ++myk;
  3182.  
  3183.             await new Promise(requestAnimationFrame);
  3184.  
  3185.             if (tid !== myk) {
  3186.               return;
  3187.             }
  3188.  
  3189.             const cnt = this;
  3190.  
  3191.             await Promise.resolve();
  3192.             cnt.showNewItems66_();
  3193.  
  3194.             await Promise.resolve();
  3195.  
  3196.           }
  3197.  
  3198.           mclp.showNewItems_ = function () {
  3199.  
  3200.             const cnt = this;
  3201.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3202.               cnt.showNewItems77_().then(() => {
  3203.                 resolve();
  3204.               });
  3205.             });
  3206.           }
  3207.  
  3208.           console.log("showNewItems_", "OK");
  3209.         } else {
  3210.           console.log("showNewItems_", "NG");
  3211.         }
  3212.  
  3213.  
  3214.         if ((mclp.flushActiveItems_ || 0).length === 0) {
  3215.  
  3216.           assertor(() => fnIntegrity(mclp.flushActiveItems_, '0.137.81'));
  3217.  
  3218.           let hasMoreMessageState = !ENABLE_SHOW_MORE_BLINKER ? -1 : 0;
  3219.  
  3220.           let contensWillChangeController = null;
  3221.  
  3222.           mclp.flushActiveItems66_ = mclp.flushActiveItems_;
  3223.  
  3224.           mclp.flushActiveItems78_ = async function (tid) {
  3225.             try {
  3226.               if (tid !== mlf) return;
  3227.               const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3228.               let logger = false;
  3229.               const cnt = this;
  3230.               let immd = cnt.__intermediate_delay__;
  3231.               await new Promise(requestAnimationFrame);
  3232.  
  3233.               if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3234.               if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return;
  3235.  
  3236.               mlf++;
  3237.               if (mlg > 1e9) mlg = 9;
  3238.               ++mlg;
  3239.  
  3240.               const tmpMaxItemsCount = this.data.maxItemsToDisplay;
  3241.               const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH;
  3242.               let changeMaxItemsToDisplay = false;
  3243.               const activeItemsLen = this.activeItems_.length;
  3244.               if (activeItemsLen > tmpMaxItemsCount && tmpMaxItemsCount > 0) {
  3245.                 logger = true;
  3246.  
  3247.                 groupCollapsed("YouTube Super Fast Chat", " | flushActiveItems78_");
  3248.  
  3249.                 logger && console.log('[Begin]')
  3250.  
  3251.                 console.log('this.activeItems_.length > N', activeItemsLen, tmpMaxItemsCount);
  3252.                 if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && lockedMaxItemsToDisplay === tmpMaxItemsCount && lockedMaxItemsToDisplay !== reducedMaxItemsToDisplay) {
  3253.                   console.log('reduce maxitems');
  3254.                   if (tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3255.                     // as all the rendered chats are already "outdated"
  3256.                     // all old chats shall remove and reduced number of few chats will be rendered
  3257.                     // then restore to the original number
  3258.                     changeMaxItemsToDisplay = true;
  3259.                     this.data.maxItemsToDisplay = reducedMaxItemsToDisplay;
  3260.                     console.log(`'maxItemsToDisplay' is reduced from ${tmpMaxItemsCount} to ${reducedMaxItemsToDisplay}.`)
  3261.                   }
  3262.                   this.activeItems_.splice(0, activeItemsLen - this.data.maxItemsToDisplay);
  3263.                   //   console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3264.  
  3265.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3266.                 } else {
  3267.                   this.activeItems_.splice(0, activeItemsLen - (tmpMaxItemsCount < 900 ? tmpMaxItemsCount : 900));
  3268.  
  3269.                   console.log('new this.activeItems_.length > N', this.activeItems_.length);
  3270.                 }
  3271.               }
  3272.               // it is found that it will render all stacked chats after switching back from background
  3273.               // to avoid lagging in popular livestream with massive chats, trim first before rendering.
  3274.               // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay);
  3275.  
  3276.  
  3277.               const items = (cnt.$ || 0).items;
  3278.  
  3279.               if (USE_WILL_CHANGE_CONTROLLER) {
  3280.                 if (contensWillChangeController && contensWillChangeController.element !== items) {
  3281.                   contensWillChangeController.release();
  3282.                   contensWillChangeController = null;
  3283.                 }
  3284.                 if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents');
  3285.               }
  3286.               const wcController = contensWillChangeController;
  3287.               cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]);
  3288.               wcController && wcController.beforeOper();
  3289.               await Promise.resolve();
  3290.               const acItems = cnt.activeItems_;
  3291.               const len1 = acItems.length;
  3292.               if (!len1) console.warn('cnt.activeItems_.length = 0');
  3293.               let waitFor = [];
  3294.  
  3295.  
  3296.               /** @type {Set<string>} */
  3297.               const imageLinks = new Set();
  3298.  
  3299.               if (ENABLE_PRELOAD_THUMBNAIL || EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL) {
  3300.                 for (const item of acItems) {
  3301.                   fixLiveChatItem(item, imageLinks);
  3302.                 }
  3303.               }
  3304.               if (ENABLE_PRELOAD_THUMBNAIL && kptPF !== null && (kptPF & (8 | 4)) && imageLinks.size > 0) {
  3305.                 if (emojiPrefetched.size > PREFETCH_LIMITED_SIZE_EMOJI) emojiPrefetched.clear();
  3306.                 if (authorPhotoPrefetched.size > PREFETCH_LIMITED_SIZE_AUTHOR_PHOTO) authorPhotoPrefetched.clear();
  3307.  
  3308.                 // reference: https://github.com/Yuanfang-fe/Blog-X/issues/34
  3309.                 const rel = kptPF & 8 ? 'subresource' : kptPF & 16 ? 'preload' : kptPF & 4 ? 'prefetch' : '';
  3310.                 // preload performs the high priority fetching.
  3311.                 // prefetch delays the chat display if the video resoruce is demanding.
  3312.  
  3313.                 if (rel) {
  3314.  
  3315.                   imageLinks.forEach(imageLink => {
  3316.                     let d = false;
  3317.                     const isEmoji = imageLink.includes('/emoji/');
  3318.                     const pretechedSet = isEmoji ? emojiPrefetched : authorPhotoPrefetched;
  3319.                     if (!pretechedSet.has(imageLink)) {
  3320.                       pretechedSet.add(imageLink);
  3321.                       d = true;
  3322.                     }
  3323.                     if (d) {
  3324.                       waitFor.push(linker(null, rel, imageLink, 'image'));
  3325.  
  3326.                     }
  3327.                   })
  3328.  
  3329.                 }
  3330.  
  3331.               }
  3332.  
  3333.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3334.               // console.log('ss1', Date.now())
  3335.               if (waitFor.length > 0) {
  3336.                 await Promise.race([new Promise(r => setTimeout(r, 250)), Promise.all(waitFor)]);
  3337.               }
  3338.               waitFor.length = 0;
  3339.               waitFor = null;
  3340.               // console.log('ss2', Date.now())
  3341.               cnt.flushActiveItems66_();
  3342.               skipDontRender = ((cnt.visibleItems || 0).length || 0) === 0;
  3343.               const len2 = cnt.activeItems_.length;
  3344.               const bAsync = len1 !== len2;
  3345.               await Promise.resolve();
  3346.               if (wcController) {
  3347.                 if (bAsync) {
  3348.                   cnt.async(() => {
  3349.                     wcController.afterOper();
  3350.                   });
  3351.                 } else {
  3352.                   wcController.afterOper();
  3353.                 }
  3354.               }
  3355.               if (changeMaxItemsToDisplay && this.data.maxItemsToDisplay === reducedMaxItemsToDisplay && tmpMaxItemsCount > reducedMaxItemsToDisplay) {
  3356.                 this.data.maxItemsToDisplay = tmpMaxItemsCount;
  3357.  
  3358.                 logger && console.log(`'maxItemsToDisplay' is restored from ${reducedMaxItemsToDisplay} to ${tmpMaxItemsCount}.`);
  3359.                 //   console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay)
  3360.               } else if (changeMaxItemsToDisplay) {
  3361.  
  3362.                 logger && console.log(`'maxItemsToDisplay' cannot be restored`, {
  3363.                   maxItemsToDisplay: this.data.maxItemsToDisplay,
  3364.                   reducedMaxItemsToDisplay,
  3365.                   originalMaxItemsToDisplay: tmpMaxItemsCount
  3366.                 });
  3367.               }
  3368.               logger && console.log('[End]')
  3369.  
  3370.               logger && console.groupEnd();
  3371.  
  3372.               if (!ENABLE_NO_SMOOTH_TRANSFORM) {
  3373.  
  3374.  
  3375.                 const ff = () => {
  3376.  
  3377.                   if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3378.                   //   if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3379.                   if (!cnt.atBottom && cnt.allowScroll && cnt.hasUserJustInteracted11_ && !cnt.hasUserJustInteracted11_()) {
  3380.                     cnt.scrollToBottom_();
  3381.  
  3382.                     Promise.resolve().then(() => {
  3383.  
  3384.                       if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return;
  3385.                       if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_();
  3386.                     });
  3387.  
  3388.  
  3389.                   }
  3390.                 }
  3391.  
  3392.                 ff();
  3393.  
  3394.  
  3395.                 Promise.resolve().then(ff);
  3396.  
  3397.                 // requestAnimationFrame(ff);
  3398.               } else if (true) { // it might not be sticky to bottom when there is a full refresh.
  3399.  
  3400.                 const knt = cnt;
  3401.                 if (!scrollChatFn) {
  3402.                   const cnt = knt;
  3403.                   const f = () => {
  3404.                     const itemScroller = cnt.itemScroller;
  3405.                     if (!itemScroller || itemScroller.isConnected === false || cnt.isAttached === false) return;
  3406.                     if (!cnt.atBottom) {
  3407.                       cnt.scrollToBottom_();
  3408.                     } else if (itemScroller.scrollTop === 0) { // not yet interacted by user; cannot stick to bottom
  3409.                       itemScroller.scrollTop = itemScroller.scrollHeight;
  3410.                     }
  3411.                   };
  3412.                   scrollChatFn = () => Promise.resolve().then(f).then(f);
  3413.                 }
  3414.  
  3415.                 if (!ENABLE_DELAYED_CHAT_OCCURRENCE) scrollChatFn();
  3416.               }
  3417.  
  3418.               return 1;
  3419.  
  3420.  
  3421.             } catch (e) {
  3422.               console.warn(e);
  3423.             }
  3424.           }
  3425.  
  3426.           mclp.flushActiveItems77_ = function () {
  3427.  
  3428.             return new Promise(resResolve => {
  3429.               try {
  3430.                 const cnt = this;
  3431.                 if (mlf > 1e9) mlf = 9;
  3432.                 let tid = ++mlf;
  3433.                 const hostElement = cnt.hostElement || cnt;
  3434.                 if (tid !== mlf || cnt.isAttached === false || hostElement.isConnected === false) return resResolve();
  3435.                 if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return resResolve();
  3436.  
  3437.                 // 4 times to maxItems to avoid frequent trimming.
  3438.                 // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16
  3439.  
  3440.                 const lockedMaxItemsToDisplay = this.data.maxItemsToDisplay944;
  3441.                 this.activeItems_.length > lockedMaxItemsToDisplay * 4 && lockedMaxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - lockedMaxItemsToDisplay - 1);
  3442.                 if (cnt.canScrollToBottom_()) {
  3443.                   cnt.mutexPromiseFA78 = (cnt.mutexPromiseFA78 || Promise.resolve())
  3444.                     .then(() => cnt.flushActiveItems78_(tid)) // async function
  3445.                     .then((asyncResult) => {
  3446.                       resResolve(asyncResult); // either undefined or 1
  3447.                       resResolve = null;
  3448.                     }).catch((e) => {
  3449.                       console.warn(e);
  3450.                       if (resResolve) resResolve();
  3451.                     });
  3452.                 } else {
  3453.                   resResolve(2);
  3454.                   resResolve = null;
  3455.                 }
  3456.               } catch (e) {
  3457.                 console.warn(e);
  3458.                 if (resResolve) resResolve();
  3459.               }
  3460.  
  3461.  
  3462.             });
  3463.  
  3464.           }
  3465.  
  3466.           mclp.flushActiveItems_ = function () {
  3467.             const cnt = this;
  3468.  
  3469.             if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments);
  3470.  
  3471.             if (cnt.activeItems_.length === 0) {
  3472.               cnt.__intermediate_delay__ = null;
  3473.               return;
  3474.             }
  3475.  
  3476.             const cntData = ((cnt || 0).data || 0);
  3477.             if (cntData.maxItemsToDisplay944 === undefined) {
  3478.               cntData.maxItemsToDisplay944 = null;
  3479.               if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY;
  3480.               cntData.maxItemsToDisplay944 = cntData.maxItemsToDisplay || null;
  3481.             }
  3482.  
  3483.             // ignore previous __intermediate_delay__ and create a new one
  3484.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3485.               cnt.flushActiveItems77_().then(rt => {  // either undefined or 1 or 2
  3486.                 if (rt === 1) {
  3487.                   resolve(1); // success, scroll to bottom
  3488.                   if (hasMoreMessageState === 1) {
  3489.                     hasMoreMessageState = 0;
  3490.                     const showMore = (cnt.$ || 0)['show-more'];
  3491.                     if (showMore) {
  3492.                       showMore.classList.remove('has-new-messages-miuzp');
  3493.                     }
  3494.                   }
  3495.                 }
  3496.                 else if (rt === 2) {
  3497.                   resolve(2); // success, trim
  3498.                   if (hasMoreMessageState === 0) {
  3499.                     hasMoreMessageState = 1;
  3500.                     const showMore = cnt.$['show-more'];
  3501.                     if (showMore) {
  3502.                       showMore.classList.add('has-new-messages-miuzp');
  3503.                     }
  3504.                   }
  3505.                 }
  3506.                 else resolve(-1); // skip
  3507.               }).catch(e => {
  3508.                 console.warn(e);
  3509.               });
  3510.             });
  3511.  
  3512.           }
  3513.           console.log("flushActiveItems_", "OK");
  3514.         } else {
  3515.           console.log("flushActiveItems_", "NG");
  3516.         }
  3517.  
  3518.         mclp.delayFlushActiveItemsAfterUserAction11_ = async function () {
  3519.           try {
  3520.             if (mlg > 1e9) mlg = 9;
  3521.             const tid = ++mlg;
  3522.             const keepTrialCond = () => this.atBottom && this.allowScroll && (tid === mlg) && this.isAttached === true && this.activeItems_.length >= 1 && (this.hostElement || 0).isConnected === true;
  3523.             const runCond = () => this.canScrollToBottom_();
  3524.             if (!keepTrialCond()) return;
  3525.             if (runCond()) return this.flushActiveItems_() | 1; // avoid return promise
  3526.             await new Promise(r => setTimeout(r, 80));
  3527.             if (!keepTrialCond()) return;
  3528.             if (runCond()) return this.flushActiveItems_() | 1;
  3529.             await new Promise(requestAnimationFrame);
  3530.             if (runCond()) return this.flushActiveItems_() | 1;
  3531.           } catch (e) {
  3532.             console.warn(e);
  3533.           }
  3534.         }
  3535.  
  3536.         if ((mclp.atBottomChanged_ || 0).length === 1) {
  3537.           // note: if the scrolling is too frequent, the show more visibility might get wrong.
  3538.           assertor(() => fnIntegrity(mclp.atBottomChanged_, '1.75.39'));
  3539.  
  3540.           const querySelector = HTMLElement.prototype.querySelector;
  3541.           const U = (element) => ({
  3542.             querySelector: (selector) => querySelector.call(element, selector)
  3543.           });
  3544.  
  3545.           let qid = 0;
  3546.           mclp.atBottomChanged_ = function (a) {
  3547.             let tid = ++qid;
  3548.             let b = this;
  3549.             a ? this.hideShowMoreAsync_ || (this.hideShowMoreAsync_ = this.async(function () {
  3550.               if (tid !== qid) return;
  3551.               U(b.hostElement).querySelector("#show-more").style.visibility = "hidden"
  3552.             }, 200)) : (this.hideShowMoreAsync_ && this.cancelAsync(this.hideShowMoreAsync_),
  3553.               this.hideShowMoreAsync_ = null,
  3554.               U(this.hostElement).querySelector("#show-more").style.visibility = "visible")
  3555.           }
  3556.  
  3557.           console.log("atBottomChanged_", "OK");
  3558.         } else {
  3559.           console.log("atBottomChanged_", "NG");
  3560.         }
  3561.  
  3562.         if ((mclp.onScrollItems_ || 0).length === 1) {
  3563.  
  3564.           assertor(() => fnIntegrity(mclp.onScrollItems_, '1.17.9'));
  3565.           mclp.onScrollItems66_ = mclp.onScrollItems_;
  3566.           mclp.onScrollItems77_ = async function (evt) {
  3567.             if (myw > 1e9) myw = 9;
  3568.             let tid = ++myw;
  3569.  
  3570.             await new Promise(requestAnimationFrame);
  3571.  
  3572.             if (tid !== myw) {
  3573.               return;
  3574.             }
  3575.  
  3576.             const cnt = this;
  3577.  
  3578.             await Promise.resolve();
  3579.             if (USE_OPTIMIZED_ON_SCROLL_ITEMS) {
  3580.               await Promise.resolve().then(() => {
  3581.                 this.ytRendererBehavior.onScroll(evt);
  3582.               }).then(() => {
  3583.                 if (this.canScrollToBottom_()) {
  3584.                   const hasUserJustInteracted = this.hasUserJustInteracted11_ ? this.hasUserJustInteracted11_() : true;
  3585.                   if (hasUserJustInteracted) {
  3586.                     // only when there is an user action
  3587.                     this.setAtBottom();
  3588.                     return 1;
  3589.                   }
  3590.                 } else {
  3591.                   // no message inserting
  3592.                   this.setAtBottom();
  3593.                   return 1;
  3594.                 }
  3595.               }).then((r) => {
  3596.  
  3597.                 if (this.activeItems_.length) {
  3598.  
  3599.                   if (this.canScrollToBottom_()) {
  3600.                     this.flushActiveItems_();
  3601.                     return 1 && r;
  3602.                   } else if (this.atBottom && this.allowScroll && (this.hasUserJustInteracted11_ && this.hasUserJustInteracted11_())) {
  3603.                     // delayed due to user action
  3604.                     this.delayFlushActiveItemsAfterUserAction11_ && this.delayFlushActiveItemsAfterUserAction11_();
  3605.                     return 0;
  3606.                   }
  3607.                 }
  3608.               }).then((r) => {
  3609.                 if (r) {
  3610.                   // ensure setAtBottom is correctly set
  3611.                   this.setAtBottom();
  3612.                 }
  3613.               });
  3614.             } else {
  3615.               cnt.onScrollItems66_(evt);
  3616.             }
  3617.  
  3618.             await Promise.resolve();
  3619.  
  3620.           }
  3621.  
  3622.           mclp.onScrollItems_ = function (evt) {
  3623.  
  3624.             const cnt = this;
  3625.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3626.               cnt.onScrollItems77_(evt).then(() => {
  3627.                 resolve();
  3628.               });
  3629.             });
  3630.           }
  3631.           console.log("onScrollItems_", "OK");
  3632.         } else {
  3633.           console.log("onScrollItems_", "NG");
  3634.         }
  3635.  
  3636.         if ((mclp.handleLiveChatActions_ || 0).length === 1) {
  3637.  
  3638.           assertor(() => fnIntegrity(mclp.handleLiveChatActions_, '1.31.17'));
  3639.           mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_;
  3640.  
  3641.           mclp.handleLiveChatActions77_ = async function (arr) {
  3642.             if (typeof (arr || 0).length !== 'number') {
  3643.               this.handleLiveChatActions66_(arr);
  3644.               return;
  3645.             }
  3646.             if (mzt > 1e9) mzt = 9;
  3647.             let tid = ++mzt;
  3648.  
  3649.             if (zarr === null) zarr = arr;
  3650.             else Array.prototype.push.apply(zarr, arr);
  3651.             arr = null;
  3652.  
  3653.             await new Promise(requestAnimationFrame);
  3654.  
  3655.             if (tid !== mzt || zarr === null) {
  3656.               return;
  3657.             }
  3658.  
  3659.             const carr = zarr;
  3660.             zarr = null;
  3661.  
  3662.             await Promise.resolve();
  3663.             this.handleLiveChatActions66_(carr);
  3664.             await Promise.resolve();
  3665.  
  3666.           }
  3667.  
  3668.           mclp.handleLiveChatActions_ = function (arr) {
  3669.  
  3670.             const cnt = this;
  3671.             cnt.__intermediate_delay__ = new Promise(resolve => {
  3672.               cnt.handleLiveChatActions77_(arr).then(() => {
  3673.                 resolve();
  3674.               });
  3675.             });
  3676.           }
  3677.           console.log("handleLiveChatActions_", "OK");
  3678.         } else {
  3679.           console.log("handleLiveChatActions_", "NG");
  3680.         }
  3681.  
  3682.         mclp.hasUserJustInteracted11_ = () => {
  3683.           const t = dateNow();
  3684.           return (t - lastWheel < 80) || currentMouseDown || currentTouchDown || (t - lastUserInteraction < 80);
  3685.         }
  3686.  
  3687.         if ((mclp.canScrollToBottom_ || 0).length === 0) {
  3688.  
  3689.           assertor(() => fnIntegrity(mclp.canScrollToBottom_, '0.9.5'));
  3690.  
  3691.           mclp.canScrollToBottom_ = function () {
  3692.             return this.atBottom && this.allowScroll && !this.hasUserJustInteracted11_();
  3693.           }
  3694.  
  3695.           console.log("canScrollToBottom_", "OK");
  3696.         } else {
  3697.           console.log("canScrollToBottom_", "NG");
  3698.         }
  3699.  
  3700.         if (ENABLE_NO_SMOOTH_TRANSFORM) {
  3701.  
  3702.           mclp.isSmoothScrollEnabled_ = function () {
  3703.             return false;
  3704.           }
  3705.  
  3706.           mclp.maybeResizeScrollContainer_ = function () {
  3707.             //
  3708.           }
  3709.  
  3710.           mclp.refreshOffsetContainerHeight_ = function () {
  3711.             //
  3712.           }
  3713.  
  3714.           mclp.smoothScroll_ = function () {
  3715.             //
  3716.           }
  3717.  
  3718.           mclp.resetSmoothScroll_ = function () {
  3719.             //
  3720.           }
  3721.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "OK");
  3722.         } else {
  3723.           console.log("ENABLE_NO_SMOOTH_TRANSFORM", "NG");
  3724.         }
  3725.  
  3726.         if (typeof mclp.handleAddChatItemAction_ === 'function' && !mclp.handleAddChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3727.  
  3728.           mclp.handleAddChatItemAction66_ = mclp.handleAddChatItemAction_;
  3729.           mclp.handleAddChatItemAction_ = function (a) {
  3730.             try {
  3731.               if (a && typeof a === 'object' && !('length' in a)) {
  3732.                 fixLiveChatItem(a.item, null);
  3733.                 console.assert(arguments[0] === a);
  3734.               }
  3735.             } catch (e) { console.warn(e) }
  3736.             return this.handleAddChatItemAction66_.apply(this, arguments);
  3737.           }
  3738.  
  3739.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3740.         } else {
  3741.  
  3742.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION) console.log("handleAddChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_ADDITION ]", "OK");
  3743.         }
  3744.  
  3745.  
  3746.         if (typeof mclp.handleReplaceChatItemAction_ === 'function' && !mclp.handleReplaceChatItemAction66_ && FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT && (EMOJI_IMAGE_SINGLE_THUMBNAIL || AUTHOR_PHOTO_SINGLE_THUMBNAIL)) {
  3747.  
  3748.           mclp.handleReplaceChatItemAction66_ = mclp.handleReplaceChatItemAction_;
  3749.           mclp.handleReplaceChatItemAction_ = function (a) {
  3750.             try {
  3751.               if (a && typeof a === 'object' && !('length' in a)) {
  3752.                 fixLiveChatItem(a.replacementItem, null);
  3753.                 console.assert(arguments[0] === a);
  3754.               }
  3755.             } catch (e) { console.warn(e) }
  3756.             return this.handleReplaceChatItemAction66_.apply(this, arguments);
  3757.           }
  3758.  
  3759.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3760.         } else {
  3761.  
  3762.           if (FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT) console.log("handleReplaceChatItemAction_ [ FIX_THUMBNAIL_SIZE_ON_ITEM_REPLACEMENT ]", "OK");
  3763.         }
  3764.  
  3765.         console.log("[End]");
  3766.         console.groupEnd();
  3767.  
  3768.       }).catch(console.warn);
  3769.  
  3770.  
  3771.       const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1)
  3772.  
  3773.         let yd = (this.__dataHost || (this.inst || 0).__dataHost || 0).__data;
  3774.  
  3775.         if (arguments.length === 2 && attrName === 'style' && yd && attrValue) {
  3776.  
  3777.           // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_;
  3778.           let v = `${attrValue}`;
  3779.           // conside a ticker is 101px width
  3780.           // 1% = 1.01px
  3781.           // 0.2% = 0.202px
  3782.  
  3783.  
  3784.           const ratio1 = (yd.ratio * 100);
  3785.           if (ratio1 > -1) { // avoid NaN
  3786.  
  3787.             // countdownDurationMs
  3788.             // 600000 - 0.2%    <1% = 6s>  <0.2% = 1.2s>
  3789.             // 300000 - 0.5%    <1% = 3s>  <0.5% = 1.5s>
  3790.             // 150000 - 1%    <1% = 1.5s>
  3791.             // 75000 - 2%    <1% =0.75s > <2% = 1.5s>
  3792.             // 30000 - 5%    <1% =0.3s > <5% = 1.5s>
  3793.  
  3794.             // 99px * 5% = 4.95px
  3795.  
  3796.             // 15000 - 10%    <1% =0.15s > <10% = 1.5s>
  3797.  
  3798.  
  3799.             // 1% Duration
  3800.  
  3801.             let ratio2 = ratio1;
  3802.  
  3803.             const ydd = yd.data;
  3804.             if (ydd) {
  3805.  
  3806.               const d1 = ydd.durationSec;
  3807.               const d2 = ydd.fullDurationSec;
  3808.  
  3809.               // @ step timing [min. 0.2%]
  3810.               let numOfSteps = 500;
  3811.               if ((d1 === d2 || (d1 + 1 === d2)) && d1 > 1) {
  3812.                 if (d2 > 400) numOfSteps = 500; // 0.2%
  3813.                 else if (d2 > 200) numOfSteps = 200; // 0.5%
  3814.                 else if (d2 > 100) numOfSteps = 100; // 1%
  3815.                 else if (d2 > 50) numOfSteps = 50; // 2%
  3816.                 else if (d2 > 25) numOfSteps = 20; // 5% (max => 99px * 5% = 4.95px)
  3817.                 else numOfSteps = 20;
  3818.               }
  3819.               if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  3820.               if (numOfSteps < 5) numOfSteps = 5;
  3821.  
  3822.               const rd = numOfSteps / 100.0;
  3823.  
  3824.               ratio2 = Math.round(ratio2 * rd) / rd;
  3825.  
  3826.               // ratio2 = Math.round(ratio2 * 5) / 5;
  3827.               ratio2 = ratio2.toFixed(1);
  3828.               v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`);
  3829.  
  3830.               if (yd.__style_last__ === v) return;
  3831.               yd.__style_last__ = v;
  3832.               // do not consider any delay here.
  3833.               // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask.
  3834.  
  3835.             }
  3836.           }
  3837.  
  3838.           HTMLElement.prototype.setAttribute.call(dr(this), attrName, v);
  3839.  
  3840.  
  3841.         } else {
  3842.           HTMLElement.prototype.setAttribute.apply(dr(this), arguments);
  3843.         }
  3844.  
  3845.       };
  3846.  
  3847.  
  3848.       const fpTicker = (renderer) => {
  3849.         const cnt = renderer.inst || renderer;
  3850.         assertor(() => typeof (cnt || 0).is === 'string');
  3851.         assertor(() => ((cnt || 0).hostElement || 0).nodeType === 1);
  3852.         const container = (cnt.$ || 0).container;
  3853.         if (container) {
  3854.           assertor(() => (container || 0).nodeType === 1);
  3855.           assertor(() => typeof container.setAttribute === 'function');
  3856.           container.setAttribute = tickerContainerSetAttribute;
  3857.         } else {
  3858.           console.warn(`"container" does not exist in ${cnt.is}`);
  3859.         }
  3860.       };
  3861.  
  3862.  
  3863.       const tags = ["yt-live-chat-ticker-paid-message-item-renderer", "yt-live-chat-ticker-paid-sticker-item-renderer",
  3864.         "yt-live-chat-ticker-renderer", "yt-live-chat-ticker-sponsor-item-renderer"];
  3865.  
  3866.  
  3867.       Promise.all(tags.map(tag => customElements.whenDefined(tag))).then(() => {
  3868.  
  3869.         mightFirstCheckOnYtInit();
  3870.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-... hacks");
  3871.         console.log("[Begin]");
  3872.  
  3873.         // << if ENABLE_VIDEO_PROGRESS_STATE_FIX >>
  3874.         let isMainVideoOngoing = null;
  3875.         let mainVideoLastProgress = null;
  3876.         // << end >>
  3877.  
  3878.         for (const tag of tags) {
  3879.           const dummy = document.createElement(tag);
  3880.  
  3881.           const cProto = getProto(dummy);
  3882.           if (!cProto || !cProto.attached) {
  3883.             console.warn(`proto.attached for ${tag} is unavailable.`);
  3884.             continue;
  3885.           }
  3886.  
  3887.           cProto.attached77 = cProto.attached;
  3888.  
  3889.           cProto.attached = function () {
  3890.             fpTicker(this.hostElement || this);
  3891.             return this.attached77();
  3892.           }
  3893.  
  3894.           for (const elm of document.getElementsByTagName(tag)) {
  3895.             if ((elm || elm.inst).isAttached === true) {
  3896.               fpTicker(elm);
  3897.             }
  3898.           }
  3899.  
  3900.  
  3901.           let rafHackState = 0;
  3902.  
  3903.           let isTimingFunctionHackable = false;
  3904.  
  3905.           let urt = 0;
  3906.  
  3907.           if (typeof cProto.startCountdown === 'function' && typeof cProto.updateTimeout === 'function' && typeof cProto.isAnimationPausedChanged === 'function') {
  3908.  
  3909.             // console.log('startCountdown', typeof cProto.startCountdown)
  3910.             // console.log('updateTimeout', typeof cProto.updateTimeout)
  3911.             // console.log('isAnimationPausedChanged', typeof cProto.isAnimationPausedChanged)
  3912.  
  3913.             isTimingFunctionHackable = fnIntegrity(cProto.startCountdown, '2.66.37') && fnIntegrity(cProto.updateTimeout, '1.76.45') && fnIntegrity(cProto.isAnimationPausedChanged, '2.56.30')
  3914.  
  3915.           } else {
  3916.             console.log(`Skip Timing Function Modification for ${tag}`);
  3917.             continue;
  3918.           }
  3919.  
  3920.  
  3921.           if (ENABLE_RAF_HACK_TICKERS && rafHub !== null) {
  3922.  
  3923.             // cancelable - this.rafId < isAnimationPausedChanged >
  3924.             rafHackState = 1;
  3925.  
  3926.             if (isTimingFunctionHackable) {
  3927.               rafHackState = 2;
  3928.  
  3929.             } else {
  3930.               rafHackState = 4;
  3931.             }
  3932.  
  3933.           }
  3934.  
  3935.           const isCSSPropertySupported = () => {
  3936.  
  3937.             if (typeof CSS !== 'object' || typeof (CSS || 0).registerProperty !== 'function') return;
  3938.             const documentElement = document.documentElement;
  3939.             if (!documentElement) {
  3940.               console.warn('document.documentElement is not found');
  3941.               return false;
  3942.             }
  3943.             if (`${window.getComputedStyle(documentElement).getPropertyValue('--ticker-rtime')}`.length === 0) {
  3944.               return false;
  3945.             }
  3946.             return true;
  3947.  
  3948.           };
  3949.  
  3950.           const doAnimator = !!ATTEMPT_ANIMATED_TICKER_BACKGROUND && isTimingFunctionHackable && typeof KeyframeEffect === 'function' && typeof animate === 'function' && typeof cProto.computeContainerStyle === 'function' && typeof cProto.colorFromDecimal === 'function' && isCSSPropertySupported();
  3951.  
  3952.           const doRAFHack = rafHackState === 2;
  3953.  
  3954.           cProto._throwOut = function () {
  3955.             this._r782 = 1;
  3956.             Promise.resolve().then(() => {
  3957.               if (typeof this.requestRemoval === 'function') {
  3958.                 const id = (this.data || 0).id;
  3959.                 if (!id) this.data = { id: 1 };
  3960.                 try {
  3961.                   this.requestRemoval();
  3962.                 } catch (e) { }
  3963.               }
  3964.               this.detached();
  3965.               this.data = null;
  3966.               this.countdownMs = 0;
  3967.               this.lastCountdownTimeMs = null;
  3968.               if (this.__dataClientsReady === true) this.__dataClientsReady = false;
  3969.               if (this.__dataEnabled === true) this.__dataEnabled = false;
  3970.               if (this.__dataReady === true) this.__dataReady = false;
  3971.               const hm = this.hostElement || this;
  3972.               if (hm.parentNode) hm.remove();
  3973.               if (hm.firstChild) hm.textContent = '';
  3974.             }).catch(e => {
  3975.               console.warn(e);
  3976.             });
  3977.           };
  3978.  
  3979.           // cProto._checkTickerBackgroundChanged = doAnimator ? function () {
  3980.           //   if (runTickerClassName === 'run-ticker') {
  3981.           //     const container = (this.$ || 0).container || 0;
  3982.           //     if (!container) return;
  3983.           //     container.classList.add('run-ticker-test');
  3984.           //     const evaluated = `${window.getComputedStyle(container).background}`;
  3985.           //     container.classList.remove('run-ticker-test');
  3986.           //     if (evaluated.indexOf('0.') < 4) {
  3987.           //       // not fulfilling
  3988.           //       // rgba(0, 0, 0, 0.004) none repeat scroll 0% 0% / auto padding-box border-box
  3989.           //       runTickerClassName = 'run-ticker-forced';
  3990.           //       console.groupCollapsed(`%c${"YouTube Super Fast Chat"}%c${" | Incompatibility Found"}`,
  3991.           //         "background-color: #010502; color: #fe806a; font-weight: 700; padding: 2px;",
  3992.           //         "background-color: #010502; color: #fe806a; font-weight: 300; padding: 2px;"
  3993.           //       );
  3994.           //       console.warn(`%cWarning:\n\tYou might have added a userscript or extension that hacks ticker background too.\n\tYouTube Super Fast Chat will override it for you.`, 'color: #bada55');
  3995.           //       console.groupEnd();
  3996.           //     }
  3997.           //   }
  3998.           // } : null;
  3999.  
  4000.           cProto._makeAnimator = doAnimator ? function () {
  4001.             if (this._r782) return;
  4002.             // if (!this.isAttached) return;
  4003.             if (!this._runnerAE) {
  4004.               const aElement = (this.$ || 0).container;
  4005.               if (!aElement) return console.warn("this.$.container is undefined");
  4006.               const da = this.data;
  4007.               if (!da || !da.startBackgroundColor || !da.endBackgroundColor) return console.warn("this.data is undefined or incorrect");
  4008.               const c1 = this.colorFromDecimal(da.startBackgroundColor);
  4009.               const c2 = this.colorFromDecimal(da.endBackgroundColor);
  4010.               if (typeof c1 !== 'string' || typeof c2 !== 'string') return console.warn('c1, c2 is not a string');
  4011.  
  4012.               // if (!this.__tickerBackgroundInitialChecked__) {
  4013.               //   this.constructor.prototype.__tickerBackgroundInitialChecked__ = true;
  4014.               //   console.log('__tickerBackgroundInitialChecked__')
  4015.               //   this._checkTickerBackgroundChanged();
  4016.               // }
  4017.  
  4018.               aElement.style.setProperty('--ticker-c1', c1);
  4019.               aElement.style.setProperty('--ticker-c2', c2);
  4020.               aElement.classList.add(runTickerClassName);
  4021.               const p = (this.countdownMs / this.countdownDurationMs) * 100;
  4022.               // this._aeStartV = this.countdownMs;
  4023.               // this._aeStartT = this.countdownDurationMs;
  4024.               if (!(p >= 0 && p <= 100)) {
  4025.                 console.warn('incorrect time ratio', p);
  4026.               } else {
  4027.                 /*
  4028.                 const u0 = p.toFixed(4) + '%';
  4029.                 this._runnerAE = animate.call(aElement,
  4030.                   [
  4031.                     { '--ticker-rtime': u0 },
  4032.                     { '--ticker-rtime': '0%' }
  4033.                   ]
  4034.                   ,
  4035.                   {
  4036.                     fill: "forwards",
  4037.                     duration: this.countdownMs,
  4038.                     easing: "linear"
  4039.                   }
  4040.                 );
  4041.                 */
  4042.  
  4043.                 let timingFn = 'linear';
  4044.  
  4045.                 const totalDuration = this.countdownDurationMs;
  4046.  
  4047.                 if (ATTEMPT_ANIMATED_TICKER_BACKGROUND === 'steps') {
  4048.  
  4049.                   // @ step timing [min. 0.2%]
  4050.                   let stepInterval = 0.2; // unit: %
  4051.                   if (totalDuration > 400000) stepInterval = 0.2;
  4052.                   else if (totalDuration > 200000) stepInterval = 0.5;
  4053.                   else if (totalDuration > 100000) stepInterval = 1;
  4054.                   else if (totalDuration > 50000) stepInterval = 2;
  4055.                   else if (totalDuration > 25000) stepInterval = 5;
  4056.                   else stepInterval = 5;
  4057.  
  4058.                   let numOfSteps = Math.round(100 / stepInterval);
  4059.  
  4060.                   if (numOfSteps > TICKER_MAX_STEPS_LIMIT) numOfSteps = TICKER_MAX_STEPS_LIMIT;
  4061.                   if (numOfSteps < 5) numOfSteps = 5;
  4062.  
  4063.                   timingFn = `steps(${numOfSteps}, end)`;
  4064.  
  4065.                 }
  4066.  
  4067.  
  4068.                 const ae = animate.call(aElement,
  4069.                   [
  4070.                     { '--ticker-rtime': '100%' },
  4071.                     { '--ticker-rtime': '0%' }
  4072.                   ]
  4073.                   ,
  4074.                   {
  4075.                     fill: "forwards",
  4076.                     duration: totalDuration,
  4077.                     easing: timingFn
  4078.                   }
  4079.                 );
  4080.  
  4081.                 this._runnerAE = ae;
  4082.  
  4083.                 ae.onfinish = (event) => {
  4084.                   this.onfinish = null;
  4085.                   if (this.isAttached === true && !this._r782 && ((this.$ || 0).container || 0).isConnected === true) {
  4086.                     this._aeFinished(event);
  4087.                   }
  4088.                 }
  4089.  
  4090.                 let bq = (1.0 - (this.countdownMs / totalDuration)) * totalDuration;
  4091.  
  4092.                 if (bq >= 0 && bq <= totalDuration) {
  4093.  
  4094.                   if (bq > totalDuration - 1) {
  4095.                     ae.currentTime = bq;
  4096.                     // setTimeout(() => {
  4097.                     //   if (this._runnerAE === ae && ae.onfinish) ae.onfinish();
  4098.                     // }, 1);
  4099.                   } else {
  4100.                     ae.currentTime = bq;
  4101.                   }
  4102.                 } else {
  4103.                   console.warn('Error on setting _runnerAE.currentTime!');
  4104.                 }
  4105.  
  4106.  
  4107.                 aeConstructor = ae.constructor; // constructor is from iframe
  4108.                 return ae;
  4109.               }
  4110.             } else {
  4111.               if (!aeConstructor) return console.warn('aeConstructor is undefined');
  4112.               // assume just time update
  4113.               const ae = this._runnerAE;
  4114.               if (!(ae instanceof aeConstructor)) return console.warn('this._runnerAE is not Animation');
  4115.               if (ae.playState !== 'paused') console.warn('ae.playState !== paused');
  4116.               let p = (this.countdownMs / this.countdownDurationMs) * 100;
  4117.               if (!(p >= 0 && p <= 100)) {
  4118.                 console.warn('incorrect time ratio', p);
  4119.               } else {
  4120.                 // let u0 = p.toFixed(4) + '%'
  4121.                 /*
  4122.                 ae.effect.setKeyframes([
  4123.                   { '--ticker-rtime': u0 },
  4124.                   { '--ticker-rtime': '0%' }
  4125.                 ]);
  4126.                 ae.effect.updateTiming({ duration: this.countdownMs });
  4127.                 */
  4128.                 // ae.currentTime = 0;
  4129.  
  4130.  
  4131.  
  4132.                 let bq = (1.0 - (this.countdownMs / this.countdownDurationMs)) * this.countdownDurationMs;
  4133.                 if (bq >= 0 && bq <= this.countdownDurationMs) {
  4134.  
  4135.                   this._runnerAE.currentTime = bq
  4136.                 } else {
  4137.                   console.warn('Error on setting _runnerAE.currentTime!');
  4138.                 }
  4139.  
  4140.  
  4141.                 ae.play();
  4142.                 return ae;
  4143.               }
  4144.             }
  4145.           } : null;
  4146.  
  4147.           cProto._aeFinished = doAnimator ? function (event) {
  4148.  
  4149.             if (this._r782) return;
  4150.  
  4151.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4152.               this._throwOut();
  4153.               return;
  4154.             }
  4155.  
  4156.             if (doAnimator) {
  4157.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4158.  
  4159.               let lc = window.performance.now();
  4160.               this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4161.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4162.               this.lastCountdownTimeMs = lc;
  4163.               if (this.countdownMs > 76) console.warn('Warning: this.countdownMs is not zero when finished!', this.countdownMs, this, event); // just warning.
  4164.  
  4165.               this.countdownMs = 0;
  4166.               this.lastCountdownTimeMs = null;
  4167.  
  4168.               if (this.isAttached) {
  4169.                 let fastRemoved = false;
  4170.                 if (Date.now() - windowShownAt < 80 && typeof this.requestRemoval === 'function') {
  4171.                   // no animation if the video page is switched from background to foreground
  4172.                   // this.hostElement.style.display = 'none';
  4173.                   const id = (this.data || 0).id || 0;
  4174.                   if (!id) this.data = { id: 1 }
  4175.                   try {
  4176.                     this.requestRemoval();
  4177.                     fastRemoved = true;
  4178.                   } catch (e) {
  4179.  
  4180.                   }
  4181.                 }
  4182.  
  4183.                 if (!fastRemoved) {
  4184.                   "auto" === this.hostElement.style.width && this.setContainerWidth();
  4185.                   this.slideDown();
  4186.                 }
  4187.               }
  4188.  
  4189.  
  4190.             } else {
  4191.               console.warn('unexpected issue')
  4192.             }
  4193.           } : null;
  4194.  
  4195.  
  4196.           if (ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX) {
  4197.  
  4198.             if (typeof cProto.handlePauseReplay === 'function' && !cProto.handlePauseReplay66 && cProto.handlePauseReplay.length === 0) {
  4199.               urt++;
  4200.               assertor(() => fnIntegrity(cProto.handlePauseReplay, '0.12.4'));
  4201.               cProto.handlePauseReplay66 = cProto.handlePauseReplay;
  4202.               cProto.handlePauseReplay = function () {
  4203.                 if (this.isAttached) {
  4204.  
  4205.                   if (pairForPauseResumeM === 0) {
  4206.                     pairForPauseResume++;
  4207.                     if (pairForPauseResume > 1e9) pairForPauseResume = pairForPauseResume % 1e4;
  4208.                   }
  4209.                   // console.log('handlePauseReplay');
  4210.                   // console.log('handlePauseReplay', pairForPauseResume);
  4211.                   const r = this.handlePauseReplay66.apply(this, arguments);
  4212.                   isMainVideoOngoing = false;
  4213.                   return r;
  4214.                 }
  4215.               };
  4216.             } else {
  4217.               console.log('Error for setting cProto.handlePauseReplay', tag)
  4218.             }
  4219.  
  4220.             if (typeof cProto.handleResumeReplay === 'function' && !cProto.handleResumeReplay66 && cProto.handlePauseReplay.length === 0) {
  4221.               urt++;
  4222.               assertor(() => fnIntegrity(cProto.handleResumeReplay, '0.8.2'));
  4223.               cProto.handleResumeReplay66 = cProto.handleResumeReplay;
  4224.               cProto.handleResumeReplay = function () {
  4225.                 if (this.isAttached) {
  4226.  
  4227.                   if (pairForPauseResumeM === 0) {
  4228.                     pairForPauseResume++;
  4229.                     if (pairForPauseResume > 1e9) pairForPauseResume = pairForPauseResume % 1e4;
  4230.                   }
  4231.                   // console.log('handleResumeReplay');
  4232.                   // console.log('handleResumeReplay', pairForPauseResume);
  4233.                   const r = this.handleResumeReplay66.apply(this, arguments);
  4234.                   isMainVideoOngoing = true;
  4235.                   return r;
  4236.  
  4237.                 }
  4238.               };
  4239.             } else {
  4240.               console.log('Error for setting cProto.handleResumeReplay', tag)
  4241.             }
  4242.  
  4243.             if (typeof cProto.handleReplayProgress === 'function' && !cProto.handleReplayProgress66 && cProto.handleReplayProgress.length === 1) {
  4244.               urt++;
  4245.               assertor(() => fnIntegrity(cProto.handleReplayProgress, '1.16.13'));
  4246.               cProto.handleReplayProgress66 = cProto.handleReplayProgress;
  4247.               cProto.handleReplayProgress = function (a) {
  4248.                 if (this.isAttached) {
  4249.                   const p = mainVideoLastProgress;
  4250.                   mainVideoLastProgress = a;
  4251.                   if (isMainVideoOngoing === false) { // ignore isMainVideoOngoing === null ?
  4252.                     const d = a - p;
  4253.                     if (d > 0 && d < 0.28) isMainVideoOngoing = true; // timeupdate
  4254.                     // 0.28 is due to
  4255.                     //    - most browsers will fire the timeupdate event between 4 to 60 times per second
  4256.                     //    - i.e. timeupdate roughly every 15-250 milliseconds
  4257.                   }
  4258.                   let promiseResult = null;
  4259.                   if (this.isAnimationPaused) {
  4260.                     // unstable state for isMainVideoOngoing; delay required
  4261.                     // all the tickers' handleReplayProgress are executed in the same microtask
  4262.                     // execute after result returned
  4263.                     const lz1 = pairForPauseResume;
  4264.                     Promise.resolve().then(() => {
  4265.                       return promiseResult
  4266.                     }).then(() => {
  4267.  
  4268.  
  4269.                       if (isMainVideoOngoing === true && this.isAnimationPaused) {
  4270.                         const lz2 = pairForPauseResume;
  4271.                         // console.log( 10044000, lz1, lz2 , mainVideoLastProgress - a, isMainVideoOngoing  )
  4272.                         if (lz1 === lz2 && mainVideoLastProgress !== null && mainVideoLastProgress - a >= -1e-5) this.isAnimationPaused = false; // trigger isAnimationPausedChanged
  4273.                       }
  4274.  
  4275.                     });
  4276.                   }
  4277.  
  4278.                   const lq1 = pairForPauseResume;
  4279.                   promiseResult = Promise.resolve().then(() => {
  4280.                     const lq2 = pairForPauseResume;
  4281.  
  4282.                     if (lq1 === lq2) {
  4283.                       this.handleReplayProgress66(a);
  4284.                     }
  4285.  
  4286.  
  4287.                   })
  4288.  
  4289.                 }
  4290.               };
  4291.             } else {
  4292.               console.log('Error for setting cProto.handleReplayProgress', tag)
  4293.             }
  4294.  
  4295.           }
  4296.  
  4297.           const ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED = ENABLE_VIDEO_PLAYBACK_PROGRESS_STATE_FIX && urt === 3;
  4298.  
  4299.           const doTimerFnModification = (doRAFHack || doAnimator);
  4300.  
  4301.           let windowShownAt = 0;
  4302.           if (doTimerFnModification) {
  4303.  
  4304.             window.addEventListener('visibilitychange', () => {
  4305.               if (document.visibilityState === 'visible') windowShownAt = Date.now();
  4306.               else windowShownAt = 0;
  4307.             }, false);
  4308.  
  4309.           }
  4310.  
  4311.           cProto.startCountdown = doTimerFnModification ? function (a, b) { // .startCountdown(a.durationSec, a.fullDurationSec)
  4312.  
  4313.             // a.durationSec [s] => countdownMs [ms]
  4314.             // a.fullDurationSec [s] => countdownDurationMs [ms] OR countdownMs [ms]
  4315.             // lastCountdownTimeMs => raf ongoing
  4316.             // lastCountdownTimeMs = 0 when rafId = 0 OR countdownDurationMs = 0
  4317.  
  4318.             if (this._r782) return;
  4319.  
  4320.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4321.               this._throwOut();
  4322.               return;
  4323.             }
  4324.  
  4325.             if (doAnimator) {
  4326.               b = void 0 === b ? 0 : b;
  4327.               if (void 0 !== a) {
  4328.                 this.countdownMs = 1E3 * a; // decreasing from durationSec[s] to zero
  4329.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs; // constant throughout the animation
  4330.                 if (!(this.lastCountdownTimeMs || this.isAnimationPaused)) {
  4331.                   this.lastCountdownTimeMs = performance.now()
  4332.                   this.rafId = 1
  4333.                   if (this._runnerAE) console.warn('Error in .startCountdown; this._runnerAE already created.')
  4334.                   this.detlaSincePausedSecs = 0;
  4335.                   const ae = this._makeAnimator();
  4336.                   if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4337.  
  4338.                   // console.log(539, isMainVideoOngoing)
  4339.                   if (this.isAnimationPaused === void 0 && ENABLE_VIDEO_PROGRESS_STATE_FIX_AND_URT_PASSED && isMainVideoOngoing === false && mainVideoLastProgress !== null) {
  4340.                     // << This is mainly for [PlayBack Replay] backwards >>
  4341.                     // fix the case when the main video is paused but due to seeking the tickers are added
  4342.                     // play first then pause immediately to allow the visual effect of initial state
  4343.                     // don't forget to set the "playerProgressSec"
  4344.                     // otherwise when it resumes from paused state, the detlaSincePausedSecs will be huge
  4345.                     this.playerProgressSec = mainVideoLastProgress; // save the progress first
  4346.                     this.isAnimationPaused = true; // trigger isAnimationPausedChanged
  4347.                     this.detlaSincePausedSecs = 0;
  4348.                     this._forceNoDetlaSincePausedSecs783 = 1; // reset this.detlaSincePausedSecs = 0 when resumed
  4349.                   }
  4350.                 }
  4351.               }
  4352.             } else {
  4353.               // console.log('cProto.startCountdown', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4354.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4355.               b = void 0 === b ? 0 : b;
  4356.               void 0 !== a && (this.countdownMs = 1E3 * a,
  4357.                 this.countdownDurationMs = b ? 1E3 * b : this.countdownMs,
  4358.                 this.ratio = 1,
  4359.                 this.lastCountdownTimeMs || this.isAnimationPaused || (this.lastCountdownTimeMs = performance.now(),
  4360.                   this.rafId = rafHub.request(this.boundUpdateTimeout37_)))
  4361.             }
  4362.  
  4363.           } : cProto.startCountdown;
  4364.  
  4365.           cProto.updateTimeout = doTimerFnModification ? function (a) {
  4366.  
  4367.             if (this._r782) return;
  4368.  
  4369.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4370.               this._throwOut();
  4371.               return;
  4372.             }
  4373.  
  4374.             if (doAnimator) {
  4375.               if (!this._runnerAE) console.warn('Error in .updateTimeout; this._runnerAE is undefined');
  4376.               this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4377.               if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4378.               if (this.isAttached && this.countdownMs) {
  4379.                 this.lastCountdownTimeMs = a
  4380.                 const ae = this._makeAnimator(); // request raf
  4381.                 if (!ae) console.warn('Error in startCountdown._makeAnimator()');
  4382.               } else {
  4383.                 (this.lastCountdownTimeMs = null,
  4384.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4385.                     this.slideDown()));
  4386.               }
  4387.             } else {
  4388.               // console.log('cProto.updateTimeout', tag) // yt-live-chat-ticker-sponsor-item-renderer
  4389.               if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4390.               this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0)));
  4391.               this.ratio = this.countdownMs / this.countdownDurationMs;
  4392.               this.isAttached && this.countdownMs ? (this.lastCountdownTimeMs = a,
  4393.                 this.rafId = rafHub.request(this.boundUpdateTimeout37_)) : (this.lastCountdownTimeMs = null,
  4394.                   this.isAttached && ("auto" === this.hostElement.style.width && this.setContainerWidth(),
  4395.                     this.slideDown()))
  4396.             }
  4397.  
  4398.           } : cProto.updateTimeout;
  4399.  
  4400.           // let ez = 0;
  4401.           cProto.isAnimationPausedChanged = doTimerFnModification ? function (a, b) {
  4402.  
  4403.             if (this._r782) return;
  4404.  
  4405.             if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4406.               this._throwOut();
  4407.               return;
  4408.             }
  4409.             let forceNoDetlaSincePausedSecs783 = this._forceNoDetlaSincePausedSecs783;
  4410.             this._forceNoDetlaSincePausedSecs783 = 0;
  4411.  
  4412.             Promise.resolve().then(() => {
  4413.  
  4414.               if (doAnimator) {
  4415.  
  4416.                 const playState = (this._runnerAE || 0).playState;
  4417.                 if (a && playState === 'running') {
  4418.  
  4419.                 } else if (!a && playState !== 'running' && b) {
  4420.  
  4421.                 } else {
  4422.                   return;
  4423.                 }
  4424.               }
  4425.  
  4426.               // if (Math.abs(this.detlaSincePausedSecs) < 0.01) this.detlaSincePausedSecs = 0;
  4427.               if (doAnimator) {
  4428.                 const pu = () => { // running -> pause
  4429.                   this._runnerAE.pause()
  4430.                   let lc = window.performance.now();
  4431.                   this.countdownMs = Math.max(0, this.countdownMs - (lc - this.lastCountdownTimeMs));
  4432.                   if (this.countdownMs > this.countdownDurationMs) this.countdownMs = this.countdownDurationMs;
  4433.                   this.lastCountdownTimeMs = lc;
  4434.                 };
  4435.                 const wa = () => { // pause -> running
  4436.                   if (forceNoDetlaSincePausedSecs783) this.detlaSincePausedSecs = 0;
  4437.                   a = this.detlaSincePausedSecs ? (this.lastCountdownTimeMs || 0) + 1000 * this.detlaSincePausedSecs : (this.lastCountdownTimeMs || 0);
  4438.                   this.detlaSincePausedSecs = 0;
  4439.                   this.updateTimeout(a);
  4440.                   this.lastCountdownTimeMs = window.performance.now();
  4441.                 };
  4442.                 a ? (this._runnerAE && pu()) : (!a && b && wa());
  4443.               } else {
  4444.                 // ez++;
  4445.                 // if(ez> 1e9) ez=9;
  4446.                 if (!this.boundUpdateTimeout37_) this.boundUpdateTimeout37_ = this.updateTimeout.bind(this);
  4447.                 a ? rafHub.cancel(this.rafId) : !a && b && (a = this.lastCountdownTimeMs || 0,
  4448.                   this.detlaSincePausedSecs && (a = (this.lastCountdownTimeMs || 0) + 1E3 * this.detlaSincePausedSecs,
  4449.                     this.detlaSincePausedSecs = 0),
  4450.                   this.boundUpdateTimeout37_(a),
  4451.                   this.lastCountdownTimeMs = window.performance.now())
  4452.               }
  4453.  
  4454.             }).catch(e => {
  4455.               console.log(e);
  4456.             });
  4457.  
  4458.  
  4459.  
  4460.           } : cProto.isAnimationPausedChanged;
  4461.  
  4462.  
  4463.           if (doAnimator) {
  4464.  
  4465.             assertor(() => fnIntegrity(cProto.computeContainerStyle, '2.81.31'));
  4466.  
  4467.             let dummyValueForStyleReturn = null;
  4468.  
  4469.             cProto.computeContainerStyle66 = cProto.computeContainerStyle;
  4470.             cProto.computeContainerStyle = function (a, b) {
  4471.  
  4472.               if (this._r782) return;
  4473.  
  4474.               if (this.isAttached === false && ((this.$ || 0).container || 0).isConnected === false) {
  4475.                 this._throwOut();
  4476.                 return;
  4477.               }
  4478.  
  4479.               const fullDurationSec = a ? a.fullDurationSec : 0;
  4480.               if (fullDurationSec > 0 && typeof b === 'number') {
  4481.  
  4482.                 // usually zero
  4483.  
  4484.                 // let currentDuationSrc = b * fullDurationSec; // a.durationSec
  4485.  
  4486.                 // console.log(231, fullDurationSec, b, currentDuationSrc, a.durationSec);
  4487.  
  4488.                 /*
  4489.                 if (a.mdsz && typeof a.mdst) return a.mdst;
  4490.                 a.mdsz = 1;
  4491.  
  4492.  
  4493.  
  4494.                 let c1 = this.colorFromDecimal(a.startBackgroundColor);
  4495.                 let c2 = this.colorFromDecimal(a.endBackgroundColor);
  4496.  
  4497.                 let ratio = currentDuationSrc / fullDurationSec;
  4498.  
  4499.                 let m = (ratio * 100).toFixed(1);
  4500.  
  4501.  
  4502.                 let s = `--background:linear-gradient(90deg, ${c1},${c1} ${m}%,${c2} ${m}%,${c2});`
  4503.                 let ro = {
  4504.                   "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4505.                   "implementsGoogStringTypedString": true
  4506.                 };
  4507.  
  4508.                 ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4509.  
  4510.                 a.mdst = s;
  4511.  
  4512.                 return ro;
  4513.                 */
  4514.               }
  4515.  
  4516.  
  4517.  
  4518.               // return this.computeContainerStyle66.apply(this, arguments);
  4519.  
  4520.               if (dummyValueForStyleReturn === null) {
  4521.  
  4522.                 let s = `--nx:82;`
  4523.                 let ro = {
  4524.                   "privateDoNotAccessOrElseSafeStyleWrappedValue_": s,
  4525.                   "implementsGoogStringTypedString": true
  4526.                 };
  4527.  
  4528.                 ro.getTypedStringValue = ro.toString = function () { return this.privateDoNotAccessOrElseSafeStyleWrappedValue_ };
  4529.  
  4530.  
  4531.                 dummyValueForStyleReturn = ro;
  4532.  
  4533.  
  4534.               }
  4535.  
  4536.  
  4537.               return dummyValueForStyleReturn;
  4538.  
  4539.  
  4540.             }
  4541.  
  4542.           }
  4543.  
  4544.           if (doTimerFnModification === true) hasTimerModified = true;
  4545.  
  4546.           if (!!ATTEMPT_ANIMATED_TICKER_BACKGROUND) {
  4547.             console.log('ATTEMPT_ANIMATED_TICKER_BACKGROUND', tag, doAnimator ? 'OK' : 'NG');
  4548.           }
  4549.  
  4550.           if (!doAnimator && (rafHackState === 2 || rafHackState === 4)) {
  4551.             console.log('RAF_HACK_TICKERS', tag, doRAFHack ? "OK" : "NG");
  4552.           }
  4553.  
  4554.         }
  4555.         console.log("[End]");
  4556.         console.groupEnd();
  4557.  
  4558.  
  4559.       }).catch(console.warn);
  4560.  
  4561.       customElements.whenDefined('yt-live-chat-ticker-renderer').then(() => {
  4562.  
  4563.         mightFirstCheckOnYtInit();
  4564.         groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-ticker-renderer hacks");
  4565.         console.log("[Begin]");
  4566.         (() => {
  4567.  
  4568.           const tag = "yt-live-chat-ticker-renderer"
  4569.           const dummy = document.createElement(tag);
  4570.  
  4571.           const cProto = getProto(dummy);
  4572.           if (!cProto || !cProto.attached) {
  4573.             console.warn(`proto.attached for ${tag} is unavailable.`);
  4574.             return;
  4575.           }
  4576.  
  4577.           if (RAF_FIX_keepScrollClamped) {
  4578.  
  4579.             // to be improved
  4580.  
  4581.             if (typeof cProto.keepScrollClamped === 'function' && !cProto.keepScrollClamped72 && fnIntegrity(cProto.keepScrollClamped) === '0.17.10') {
  4582.  
  4583.               cProto.keepScrollClamped72 = cProto.keepScrollClamped;
  4584.               cProto.keepScrollClamped = function () {
  4585.                 this._bound_keepScrollClamped = this._bound_keepScrollClamped || this.keepScrollClamped.bind(this);
  4586.                 this.scrollClampRaf = requestAnimationFrame(this._bound_keepScrollClamped);
  4587.                 this.maybeClampScroll()
  4588.               }
  4589.  
  4590.               console.log('RAF_FIX: keepScrollClamped', tag, "OK")
  4591.             } else {
  4592.  
  4593.               assertor(() => fnIntegrity(cProto.keepScrollClamped, '0.17.10'));
  4594.               console.log('RAF_FIX: keepScrollClamped', tag, "NG")
  4595.             }
  4596.  
  4597.           }
  4598.  
  4599.  
  4600.           if (RAF_FIX_scrollIncrementally && typeof cProto.startScrolling === 'function' && typeof cProto.scrollIncrementally === 'function' && fnIntegrity(cProto.startScrolling) === '1.44.32' && fnIntegrity(cProto.scrollIncrementally) === '1.82.43') {
  4601.             // to be replaced by animator
  4602.  
  4603.             cProto.startScrolling = function (a) {
  4604.               this.scrollStopHandle && this.cancelAsync(this.scrollStopHandle);
  4605.               this.asyncHandle && cancelAnimationFrame(this.asyncHandle);
  4606.               this.lastFrameTimestamp = this.scrollStartTime = performance.now();
  4607.               this.scrollRatePixelsPerSecond = a;
  4608.               this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4609.               this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally)
  4610.             };
  4611.  
  4612.             if (RAF_FIX_scrollIncrementally === 2) {
  4613.  
  4614.               // related functions: startScrollBack, startScrollingLeft, startScrollingRight, etc.
  4615.  
  4616.               cProto.scrollIncrementally = function (a) {
  4617.                 const b = a - (this.lastFrameTimestamp || 0);
  4618.                 const rate = this.scrollRatePixelsPerSecond
  4619.                 const q = b / 1E3 * (rate || 0);
  4620.  
  4621.                 const sl = this.$.items.scrollLeft;
  4622.                 // console.log(rate, sl, q)
  4623.                 if (this.lastFrameTimestamp == this.scrollStartTime) {
  4624.  
  4625.                 } else if (q > -1e-5 && q < 1e-5) {
  4626.  
  4627.                 } else {
  4628.                   let cond1 = sl > 0 && rate > 0 && q > 0;
  4629.                   let cond2 = sl > 0 && rate < 0 && q < 0;
  4630.                   let cond3 = sl < 1e-5 && sl > -1e-5 && rate > 0 && q > 0;
  4631.                   if (cond1 || cond2 || cond3) {
  4632.                     this.$.items.scrollLeft += q;
  4633.                     this.maybeClampScroll();
  4634.                     this.updateArrows();
  4635.                   }
  4636.                 }
  4637.  
  4638.                 this.lastFrameTimestamp = a;
  4639.                 this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4640.                 0 < this.$.items.scrollLeft || rate && 0 < rate ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  4641.               };
  4642.  
  4643.             } else {
  4644.  
  4645.               cProto.scrollIncrementally = function (a) {
  4646.                 const b = a - (this.lastFrameTimestamp || 0);
  4647.                 this.$.items.scrollLeft += b / 1E3 * (this.scrollRatePixelsPerSecond || 0);
  4648.                 this.maybeClampScroll();
  4649.                 this.updateArrows();
  4650.                 this.lastFrameTimestamp = a;
  4651.                 this._bound_scrollIncrementally = this._bound_scrollIncrementally || this.scrollIncrementally.bind(this);
  4652.                 0 < this.$.items.scrollLeft || this.scrollRatePixelsPerSecond && 0 < this.scrollRatePixelsPerSecond ? this.asyncHandle = requestAnimationFrame(this._bound_scrollIncrementally) : this.stopScrolling()
  4653.               };
  4654.  
  4655.             }
  4656.  
  4657.             console.log(`RAF_FIX: scrollIncrementally${RAF_FIX_scrollIncrementally}`, tag, "OK")
  4658.           } else {
  4659.             assertor(() => fnIntegrity(cProto.startScrolling, '1.44.32'));
  4660.             assertor(() => fnIntegrity(cProto.scrollIncrementally, '1.82.43'));
  4661.             console.log('RAF_FIX: scrollIncrementally', tag, "NG")
  4662.           }
  4663.  
  4664.  
  4665.           if (CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED && typeof cProto.attached === 'function' && !cProto.attached37 && typeof cProto.detached === 'function' && !cProto.detached37) {
  4666.  
  4667.             cProto.attached37 = cProto.attached;
  4668.             cProto.detached37 = cProto.detached;
  4669.  
  4670.             let naohzId = 0;
  4671.             cProto.__naohzId__ = 0;
  4672.             cProto.attached = function () {
  4673.               Promise.resolve().then(() => {
  4674.  
  4675.                 const hostElement = this.hostElement || this;
  4676.                 if (!(hostElement instanceof HTMLElement)) return;
  4677.                 if (!HTMLElement.prototype.matches.call(hostElement, '.yt-live-chat-renderer')) return;
  4678.                 const ironPage = HTMLElement.prototype.closest.call(hostElement, 'iron-pages.yt-live-chat-renderer');
  4679.                 // or #chat-messages
  4680.                 if (!ironPage) return;
  4681.                 this.__naohzId__ = ++naohzId;
  4682.                 ironPage.setAttribute('naohz', `${+this.__naohzId__}`);
  4683.  
  4684.                 ironPage.removeEventListener('click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4685.                 ironPage.addEventListener('click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4686.  
  4687.               });
  4688.               return this.attached37.apply(this, arguments);
  4689.             };
  4690.             cProto.detached = function () {
  4691.               Promise.resolve().then(() => {
  4692.  
  4693.                 const ironPage = document.querySelector(`iron-pages[naohz="${+this.__naohzId__}"]`);
  4694.                 if (!ironPage) return;
  4695.  
  4696.                 ironPage.removeEventListener('click', this.messageBoxClickHandlerForFade, { capture: false, passive: true });
  4697.  
  4698.               });
  4699.               return this.detached37.apply(this, arguments);
  4700.             };
  4701.  
  4702.             const clickFade = (p) => {
  4703.  
  4704.               let u = HTMLElement.prototype.querySelector.call(p, 'yt-live-chat-pinned-message-renderer:not([hidden]) #fade');
  4705.               if (u) u.click();
  4706.             };
  4707.             cProto.messageBoxClickHandlerForFade = async (evt) => {
  4708.  
  4709.               const target = (evt || 0).target || 0;
  4710.               evt = null;
  4711.               if (!target) return;
  4712.  
  4713.               for (let p = target; p instanceof HTMLElement; p = nodeParent(p)) {
  4714.                 const is = p.is;
  4715.                 if (typeof is === 'string' && is) {
  4716.  
  4717.                   if (is === 'iron-pages' || is === 'yt-live-chat-renderer' || is === 'yt-live-chat-app') {
  4718.                     Promise.resolve(p).then(clickFade);
  4719.                     return;
  4720.                   }
  4721.                   if (is !== 'yt-live-chat-ticker-renderer') {
  4722.                     if (is.startsWith('yt-live-chat-ticker-')) return;
  4723.                     if (!is.endsWith('-renderer')) return;
  4724.                   }
  4725.  
  4726.                 } else {
  4727.                   if ((p.nodeName || '').includes('BUTTON')) return;
  4728.                 }
  4729.  
  4730.               }
  4731.             };
  4732.  
  4733.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - OK")
  4734.  
  4735.           } else {
  4736.             console.log("CLOSE_TICKER_PINNED_MESSAGE_WHEN_HEADER_CLICKED - NG")
  4737.           }
  4738.  
  4739.  
  4740.         })();
  4741.  
  4742.         console.log("[End]");
  4743.  
  4744.         console.groupEnd();
  4745.  
  4746.       }).catch(console.warn);
  4747.  
  4748.  
  4749.       if (ENABLE_RAF_HACK_INPUT_RENDERER && rafHub !== null) {
  4750.  
  4751.  
  4752.         customElements.whenDefined("yt-live-chat-message-input-renderer").then(() => {
  4753.  
  4754.           mightFirstCheckOnYtInit();
  4755.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-message-input-renderer hacks");
  4756.           console.log("[Begin]");
  4757.           (() => {
  4758.  
  4759.             const tag = "yt-live-chat-message-input-renderer"
  4760.             const dummy = document.createElement(tag);
  4761.  
  4762.             const cProto = getProto(dummy);
  4763.             if (!cProto || !cProto.attached) {
  4764.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4765.               return;
  4766.             }
  4767.  
  4768.             let doHack = false;
  4769.             if (typeof cProto.handleTimeout === 'function' && typeof cProto.updateTimeout === 'function') {
  4770.  
  4771.               // not cancellable
  4772.  
  4773.  
  4774.               doHack = fnIntegrity(cProto.handleTimeout, '1.27.16') && fnIntegrity(cProto.updateTimeout, '1.50.33');
  4775.  
  4776.             }
  4777.  
  4778.             if (doHack) {
  4779.  
  4780.               cProto.handleTimeout = function (a) {
  4781.                 console.log('cProto.handleTimeout', tag)
  4782.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4783.                 this.timeoutDurationMs = this.timeoutMs = a;
  4784.                 this.countdownRatio = 1;
  4785.                 0 === this.lastTimeoutTimeMs && rafHub.request(this.boundUpdateTimeout38_)
  4786.               };
  4787.               cProto.updateTimeout = function (a) {
  4788.                 console.log('cProto.updateTimeout', tag)
  4789.                 if (!this.boundUpdateTimeout38_) this.boundUpdateTimeout38_ = this.updateTimeout.bind(this);
  4790.                 this.lastTimeoutTimeMs && (this.timeoutMs = Math.max(0, this.timeoutMs - (a - this.lastTimeoutTimeMs)),
  4791.                   this.countdownRatio = this.timeoutMs / this.timeoutDurationMs);
  4792.                 this.isAttached && this.timeoutMs ? (this.lastTimeoutTimeMs = a,
  4793.                   rafHub.request(this.boundUpdateTimeout38_)) : this.lastTimeoutTimeMs = 0
  4794.               };
  4795.  
  4796.               console.log('RAF_HACK_INPUT_RENDERER', tag, "OK")
  4797.             } else {
  4798.  
  4799.               console.log('typeof handleTimeout', typeof cProto.handleTimeout)
  4800.               console.log('typeof updateTimeout', typeof cProto.updateTimeout)
  4801.  
  4802.               console.log('RAF_HACK_INPUT_RENDERER', tag, "NG")
  4803.             }
  4804.  
  4805.           })();
  4806.  
  4807.           console.log("[End]");
  4808.  
  4809.           console.groupEnd();
  4810.  
  4811.  
  4812.         })
  4813.  
  4814.  
  4815.       }
  4816.  
  4817.       if (ENABLE_RAF_HACK_EMOJI_PICKER && rafHub !== null) {
  4818.  
  4819.  
  4820.         customElements.whenDefined("yt-emoji-picker-renderer").then(() => {
  4821.  
  4822.           mightFirstCheckOnYtInit();
  4823.           groupCollapsed("YouTube Super Fast Chat", " | yt-emoji-picker-renderer hacks");
  4824.           console.log("[Begin]");
  4825.           (() => {
  4826.  
  4827.             const tag = "yt-emoji-picker-renderer"
  4828.             const dummy = document.createElement(tag);
  4829.  
  4830.             const cProto = getProto(dummy);
  4831.             if (!cProto || !cProto.attached) {
  4832.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4833.               return;
  4834.             }
  4835.  
  4836.             let doHack = false;
  4837.             if (typeof cProto.animateScroll_ === 'function') {
  4838.  
  4839.               // not cancellable
  4840.               console.log('animateScroll_', typeof cProto.animateScroll_)
  4841.  
  4842.               doHack = fnIntegrity(cProto.animateScroll_, '1.102.49')
  4843.  
  4844.             }
  4845.  
  4846.             if (doHack) {
  4847.  
  4848.               const querySelector = HTMLElement.prototype.querySelector;
  4849.               const U = (element) => ({
  4850.                 querySelector: (selector) => querySelector.call(element, selector)
  4851.               });
  4852.  
  4853.               cProto.animateScroll_ = function (a) {
  4854.                 // console.log('cProto.animateScroll_', tag) // yt-emoji-picker-renderer
  4855.                 if (!this.boundAnimateScroll39_) this.boundAnimateScroll39_ = this.animateScroll_.bind(this);
  4856.                 this.lastAnimationTime_ || (this.lastAnimationTime_ = a);
  4857.                 a -= this.lastAnimationTime_;
  4858.                 200 > a ? (U(this.hostElement).querySelector("#categories").scrollTop = this.animationStart_ + (this.animationEnd_ - this.animationStart_) * a / 200,
  4859.                   rafHub.request(this.boundAnimateScroll39_)) : (null != this.animationEnd_ && (U(this.hostElement).querySelector("#categories").scrollTop = this.animationEnd_),
  4860.                     this.animationEnd_ = this.animationStart_ = null,
  4861.                     this.lastAnimationTime_ = 0);
  4862.                 this.updateButtons_()
  4863.               }
  4864.  
  4865.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "OK")
  4866.             } else {
  4867.  
  4868.               console.log('ENABLE_RAF_HACK_EMOJI_PICKER', tag, "NG")
  4869.             }
  4870.  
  4871.           })();
  4872.  
  4873.           console.log("[End]");
  4874.  
  4875.           console.groupEnd();
  4876.         });
  4877.       }
  4878.  
  4879.       if (ENABLE_RAF_HACK_DOCKED_MESSAGE && rafHub !== null) {
  4880.  
  4881.  
  4882.         customElements.whenDefined("yt-live-chat-docked-message").then(() => {
  4883.  
  4884.           mightFirstCheckOnYtInit();
  4885.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-docked-message hacks");
  4886.           console.log("[Begin]");
  4887.           (() => {
  4888.  
  4889.             const tag = "yt-live-chat-docked-message"
  4890.             const dummy = document.createElement(tag);
  4891.  
  4892.             const cProto = getProto(dummy);
  4893.             if (!cProto || !cProto.attached) {
  4894.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4895.               return;
  4896.             }
  4897.  
  4898.             let doHack = false;
  4899.             if (typeof cProto.detached === 'function' && typeof cProto.checkIntersections === 'function' && typeof cProto.onDockableMessagesChanged === 'function' && typeof cProto.boundCheckIntersections === 'undefined') {
  4900.  
  4901.               // cancelable - this.intersectRAF <detached>
  4902.               // yt-live-chat-docked-message
  4903.               // boundCheckIntersections <-> checkIntersections
  4904.               // onDockableMessagesChanged
  4905.               //  this.intersectRAF = window.requestAnimationFrame(this.boundCheckIntersections);
  4906.  
  4907.               console.log('detached', typeof cProto.detached)
  4908.               console.log('checkIntersections', typeof cProto.checkIntersections)
  4909.               console.log('onDockableMessagesChanged', typeof cProto.onDockableMessagesChanged)
  4910.  
  4911.               doHack = fnIntegrity(cProto.detached, '0.32.22') && fnIntegrity(cProto.checkIntersections, '0.128.85') && fnIntegrity(cProto.onDockableMessagesChanged, '0.20.11')
  4912.  
  4913.             }
  4914.  
  4915.             if (doHack) {
  4916.  
  4917.               cProto.checkIntersections = function () {
  4918.                 // console.log('cProto.checkIntersections', tag)
  4919.                 if (this.dockableMessages.length) {
  4920.                   this.intersectRAF = rafHub.request(this.boundCheckIntersections);
  4921.                   let a = this.dockableMessages[0]
  4922.                     , b = this.hostElement.getBoundingClientRect();
  4923.                   a = a.getBoundingClientRect();
  4924.                   let c = a.top - b.top
  4925.                     , d = 8 >= c;
  4926.                   c = 8 >= c - this.hostElement.clientHeight;
  4927.                   if (d) {
  4928.                     let e;
  4929.                     for (; d;) {
  4930.                       e = this.dockableMessages.shift();
  4931.                       d = this.dockableMessages[0];
  4932.                       if (!d)
  4933.                         break;
  4934.                       d = d.getBoundingClientRect();
  4935.                       c = d.top - b.top;
  4936.                       let f = 8 >= c;
  4937.                       if (8 >= c - a.height)
  4938.                         if (f)
  4939.                           a = d;
  4940.                         else
  4941.                           return;
  4942.                       d = f
  4943.                     }
  4944.                     this.dock(e)
  4945.                   } else
  4946.                     c && this.dockedItem && this.clear()
  4947.                 } else
  4948.                   this.intersectRAF = 0
  4949.               }
  4950.  
  4951.               cProto.onDockableMessagesChanged = function () {
  4952.                 // console.log('cProto.onDockableMessagesChanged', tag) // yt-live-chat-docked-message
  4953.                 this.dockableMessages.length && !this.intersectRAF && (this.intersectRAF = rafHub.request(this.boundCheckIntersections))
  4954.               }
  4955.  
  4956.               cProto.detached = function () {
  4957.                 this.intersectRAF && rafHub.cancel(this.intersectRAF)
  4958.               }
  4959.  
  4960.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "OK")
  4961.             } else {
  4962.  
  4963.               console.log('ENABLE_RAF_HACK_DOCKED_MESSAGE', tag, "NG")
  4964.             }
  4965.  
  4966.           })();
  4967.  
  4968.           console.log("[End]");
  4969.  
  4970.           console.groupEnd();
  4971.  
  4972.         }).catch(console.warn);
  4973.  
  4974.       }
  4975.  
  4976.       if (FIX_SETSRC_AND_THUMBNAILCHANGE_) {
  4977.  
  4978.  
  4979.         customElements.whenDefined("yt-img-shadow").then(() => {
  4980.  
  4981.           mightFirstCheckOnYtInit();
  4982.           groupCollapsed("YouTube Super Fast Chat", " | yt-img-shadow hacks");
  4983.           console.log("[Begin]");
  4984.           (() => {
  4985.  
  4986.             const tag = "yt-img-shadow"
  4987.             const dummy = document.createElement(tag);
  4988.  
  4989.             const cProto = getProto(dummy);
  4990.             if (!cProto || !cProto.attached) {
  4991.               console.warn(`proto.attached for ${tag} is unavailable.`);
  4992.               return;
  4993.             }
  4994.  
  4995.             if (typeof cProto.thumbnailChanged_ === 'function' && !cProto.thumbnailChanged66_) {
  4996.  
  4997.               cProto.thumbnailChanged66_ = cProto.thumbnailChanged_;
  4998.               cProto.thumbnailChanged_ = function (a) {
  4999.  
  5000.                 if (this.oldThumbnail_ && this.thumbnail && this.oldThumbnail_.thumbnails === this.thumbnail.thumbnails) return;
  5001.                 if (!this.oldThumbnail_ && !this.thumbnail) return;
  5002.  
  5003.                 return this.thumbnailChanged66_.apply(this, arguments)
  5004.  
  5005.               }
  5006.               console.log("cProto.thumbnailChanged_ - OK");
  5007.  
  5008.             } else {
  5009.               console.log("cProto.thumbnailChanged_ - NG");
  5010.  
  5011.             }
  5012.             if (typeof cProto.setSrc_ === 'function' && !cProto.setSrc66_) {
  5013.  
  5014.               cProto.setSrc66_ = cProto.setSrc_;
  5015.               cProto.setSrc_ = function (a) {
  5016.                 if ((((this || 0).$ || 0).img || 0).src === a) return;
  5017.                 return this.setSrc66_.apply(this, arguments)
  5018.               }
  5019.  
  5020.               console.log("cProto.setSrc_ - OK");
  5021.             } else {
  5022.  
  5023.               console.log("cProto.setSrc_ - NG");
  5024.             }
  5025.  
  5026.           })();
  5027.  
  5028.           console.log("[End]");
  5029.  
  5030.           console.groupEnd();
  5031.  
  5032.         }).catch(console.warn);
  5033.  
  5034.       }
  5035.  
  5036.       if (FIX_THUMBNAIL_DATACHANGED) {
  5037.  
  5038.  
  5039.  
  5040.         customElements.whenDefined("yt-live-chat-author-badge-renderer").then(() => {
  5041.  
  5042.           mightFirstCheckOnYtInit();
  5043.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-author-badge-renderer hacks");
  5044.           console.log("[Begin]");
  5045.           (() => {
  5046.  
  5047.             const tag = "yt-live-chat-author-badge-renderer"
  5048.             const dummy = document.createElement(tag);
  5049.  
  5050.             const cProto = getProto(dummy);
  5051.             if (!cProto || !cProto.attached) {
  5052.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5053.               return;
  5054.             }
  5055.  
  5056.  
  5057.             if (typeof cProto.dataChanged === 'function' && !cProto.dataChanged86 && fnIntegrity(cProto.dataChanged) === '1.159.97') {
  5058.  
  5059.  
  5060.  
  5061.               cProto.dataChanged86 = cProto.dataChanged;
  5062.               cProto.dataChanged = function (a) {
  5063.  
  5064.                 /*
  5065.  
  5066.                   for (var b = xC(Z(this.hostElement).querySelector("#image")); b.firstChild; )
  5067.                       b.removeChild(b.firstChild);
  5068.                   if (a)
  5069.                       if (a.icon) {
  5070.                           var c = document.createElement("yt-icon");
  5071.                           "MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge ? (c.icon = "yt-sys-icons:shield-filled",
  5072.                           c.defaultToFilled = !0) : c.icon = "live-chat-badges:" + a.icon.iconType.toLowerCase();
  5073.                           b.appendChild(c)
  5074.                       } else if (a.customThumbnail) {
  5075.                           c = document.createElement("img");
  5076.                           var d;
  5077.                           (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5078.                           b.appendChild(c),
  5079.                           c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail",a.customThumbnail))
  5080.                       }
  5081.  
  5082.                 */
  5083.  
  5084.                 const image = ((this || 0).$ || 0).image
  5085.                 if (image && a && image.firstElementChild) {
  5086.                   let exisiting = image.firstElementChild;
  5087.                   if (exisiting === image.lastElementChild) {
  5088.  
  5089.  
  5090.                     if (a.icon && exisiting.nodeName.toUpperCase() === 'YT-ICON') {
  5091.  
  5092.                       let c = exisiting;
  5093.                       if ("MODERATOR" === a.icon.iconType && this.enableNewModeratorBadge) {
  5094.                         if (c.icon !== "yt-sys-icons:shield-filled") c.icon = "yt-sys-icons:shield-filled";
  5095.                         if (c.defaultToFilled !== true) c.defaultToFilled = true;
  5096.                       } else {
  5097.                         let p = "live-chat-badges:" + a.icon.iconType.toLowerCase();;
  5098.                         if (c.icon !== p) c.icon = p;
  5099.                         if (c.defaultToFilled !== false) c.defaultToFilled = false;
  5100.                       }
  5101.                       return;
  5102.  
  5103.  
  5104.                     } else if (a.customThumbnail && exisiting.nodeName.toUpperCase() == 'IMG') {
  5105.  
  5106.                       let c = exisiting;
  5107.                       if (a.customThumbnail.thumbnails.map(e => e.url).includes(c.src)) {
  5108.  
  5109.                         c.setAttribute("alt", this.hostElement.ariaLabel || "");
  5110.                         return;
  5111.                       }
  5112.                       /*
  5113.  
  5114.                       var d;
  5115.                       (d = (d = KC(a.customThumbnail.thumbnails, 16)) ? lc(oc(d)) : null) ? (c.src = d,
  5116.  
  5117.  
  5118.                         c.setAttribute("alt", this.hostElement.ariaLabel || "")) : lq(new tm("Could not compute URL for thumbnail", a.customThumbnail))
  5119.                         */
  5120.                     }
  5121.  
  5122.  
  5123.                   }
  5124.                 }
  5125.                 return this.dataChanged86.apply(this, arguments)
  5126.  
  5127.               }
  5128.               console.log("cProto.dataChanged - OK");
  5129.  
  5130.             } else {
  5131.               assertor(() => fnIntegrity(cProto.dataChanged, '1.159.97'));
  5132.               console.log("cProto.dataChanged - NG");
  5133.  
  5134.             }
  5135.  
  5136.           })();
  5137.  
  5138.           console.log("[End]");
  5139.  
  5140.           console.groupEnd();
  5141.  
  5142.         }).catch(console.warn);
  5143.  
  5144.  
  5145.       }
  5146.  
  5147.  
  5148.       if (FIX_TOOLTIP_DISPLAY) {
  5149.  
  5150.  
  5151.         customElements.whenDefined("tp-yt-paper-tooltip").then(() => {
  5152.  
  5153.           mightFirstCheckOnYtInit();
  5154.           groupCollapsed("YouTube Super Fast Chat", " | tp-yt-paper-tooltip hacks");
  5155.           console.log("[Begin]");
  5156.           (() => {
  5157.  
  5158.             const tag = "tp-yt-paper-tooltip"
  5159.             const dummy = document.createElement(tag);
  5160.  
  5161.             const cProto = getProto(dummy);
  5162.             if (!cProto || !cProto.attached) {
  5163.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5164.               return;
  5165.             }
  5166.  
  5167.             if (typeof cProto.attached === 'function' && typeof cProto.detached === 'function' && cProto._readyClients && cProto._attachDom && cProto.ready && !cProto._readyClients43) {
  5168.  
  5169.               cProto._readyClients43 = cProto._readyClients;
  5170.               cProto._readyClients = function () {
  5171.                 let r = cProto._readyClients43.apply(this, arguments);
  5172.                 if (this.$ && this.$$ && this.$.tooltip) this.root = null; // fix this.root = null != (b = a.root) ? b : this.host
  5173.                 return r;
  5174.               }
  5175.  
  5176.               console.log("_readyClients - OK");
  5177.  
  5178.             } else {
  5179.               console.log("_readyClients - NG");
  5180.  
  5181.             }
  5182.  
  5183.             if (typeof cProto.show === 'function' && !cProto.show17) {
  5184.               cProto.show17 = cProto.show;
  5185.               cProto.show = function () {
  5186.  
  5187.                 let r = this.show17.apply(this, arguments);
  5188.                 this._showing === true && Promise.resolve().then(() => {
  5189.                   const tooltip = (this.$ || 0).tooltip;
  5190.  
  5191.                   if (tooltip && tooltip.firstElementChild === null) {
  5192.                     let text = tooltip.textContent;
  5193.                     if (typeof text === 'string' && text.length >= 2) {
  5194.                       tooltip.textContent = text.trim();
  5195.                     }
  5196.                   }
  5197.                 }).catch(console.warn)
  5198.                 return r;
  5199.               }
  5200.  
  5201.               console.log("trim tooltip content - OK");
  5202.  
  5203.             } else {
  5204.               console.log("trim tooltip content - NG");
  5205.  
  5206.             }
  5207.  
  5208.  
  5209.  
  5210.           })();
  5211.  
  5212.           console.log("[End]");
  5213.  
  5214.           console.groupEnd();
  5215.  
  5216.         }).catch(console.warn);
  5217.  
  5218.  
  5219.  
  5220.       }
  5221.  
  5222.  
  5223.  
  5224.       if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK) {
  5225.  
  5226.  
  5227.         const hookDocumentMouseDownSetupFn = () => {
  5228.  
  5229.  
  5230.  
  5231.           let muzTimestamp = 0;
  5232.           let nszDropdown = null;
  5233.  
  5234.  
  5235.  
  5236.           const handlerObject = {
  5237.  
  5238.             // mdHandler282 : function (evt) {
  5239.             //   // console.log(evt, 1, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5240.             //   if (!evt || !evt.isTrusted) return;
  5241.             //   muzTimestamp = 0;
  5242.             //   nszDropdown = null;
  5243.  
  5244.             //   const hostElement = this.hostElement || this;
  5245.             //   if (!evt || !evt.isTrusted || !hostElement.hasAttribute('menu-visible')) return;
  5246.             //   if (!hostElement.contains(evt.target)) return;
  5247.             //   let targetDropDown = null;
  5248.             //   for(const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')){
  5249.             //     if(dropdown && dropdown.positionTarget && hostElement.contains( dropdown.positionTarget)){
  5250.             //       targetDropDown = dropdown;
  5251.             //     }
  5252.             //   }
  5253.             //   if ((nszDropdown = targetDropDown)) {
  5254.             //     muzTimestamp = Date.now();
  5255.             //     evt.stopImmediatePropagation();
  5256.             //     evt.stopPropagation();
  5257.             //   }
  5258.  
  5259.             // },
  5260.  
  5261.  
  5262.             muHandler282: function (evt) {
  5263.               // console.log(evt, 7, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5264.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5265.               const dropdown = nszDropdown;
  5266.               muzTimestamp = 0;
  5267.               nszDropdown = null;
  5268.  
  5269.               const kurMPC = kRef(currentMenuPivotWR) || 0;
  5270.               const hostElement = kurMPC.hostElement || kurMPC;
  5271.               if (!hostElement.hasAttribute('menu-visible')) return;
  5272.               if (dropdown && dropdown.positionTarget && hostElement.contains(dropdown.positionTarget)) {
  5273.  
  5274.  
  5275.                 /*
  5276.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5277.                 if(parentButton) return;
  5278.                 */
  5279.  
  5280.                 muzTimestamp = Date.now();
  5281.                 evt.stopImmediatePropagation();
  5282.                 evt.stopPropagation();
  5283.                 Promise.resolve(dropdown).then((dropdown) => {
  5284.                   dropdown.cancel();
  5285.                 });
  5286.                 // document.body.click();
  5287.               }
  5288.  
  5289.             },
  5290.  
  5291.             mlHandler282: function (evt) {
  5292.               muzTimestamp = 0;
  5293.               nszDropdown = null;
  5294.             },
  5295.  
  5296.             ckHandler282: function (evt) {
  5297.               // console.log(evt, 3, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5298.  
  5299.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5300.               if (Date.now() - muzTimestamp < 40) {
  5301.  
  5302.                 /*
  5303.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5304.                 if(parentButton) return;
  5305.                 */
  5306.  
  5307.                 muzTimestamp = Date.now();
  5308.                 evt.stopImmediatePropagation();
  5309.                 evt.stopPropagation();
  5310.               }
  5311.  
  5312.             },
  5313.  
  5314.             tapHandler282: function (evt) {
  5315.               // console.log(evt, 2, document.querySelector('tp-yt-iron-dropdown[focused].style-scope.yt-live-chat-app'))
  5316.  
  5317.               if (!evt || !evt.isTrusted || !muzTimestamp) return;
  5318.               if (Date.now() - muzTimestamp < 40) {
  5319.  
  5320.                 /*
  5321.                 const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5322.                 if(parentButton) return;
  5323.                 */
  5324.  
  5325.                 muzTimestamp = Date.now();
  5326.                 evt.stopImmediatePropagation();
  5327.                 evt.stopPropagation();
  5328.               }
  5329.  
  5330.             },
  5331.  
  5332.  
  5333.             handleEvent(evt) {
  5334.  
  5335.  
  5336.               if (evt) {
  5337.                 const kurMPC = kRef(currentMenuPivotWR) || 0;
  5338.                 const cnt = kurMPC.inst || kurMPC;
  5339.                 const hostElement = cnt.hostElement || cnt;
  5340.                 if (!cnt || cnt.isAttached !== true || hostElement.isConnected !== true) return;
  5341.                 switch (evt.type) {
  5342.                   // case 'mousedown':
  5343.                   // return this.mdHandler282.call(kurMPC, evt);
  5344.                   case 'mouseup':
  5345.                     return this.muHandler282(evt);
  5346.                   case 'mouseleave':
  5347.                     return this.mlHandler282(evt);
  5348.                   case 'tap':
  5349.                     return this.tapHandler282(evt);
  5350.                   case 'click':
  5351.                     return this.ckHandler282(evt);
  5352.                 }
  5353.               }
  5354.  
  5355.             }
  5356.  
  5357.  
  5358.  
  5359.           }
  5360.  
  5361.           document.addEventListener('mousedown', function (evt) {
  5362.  
  5363.             if (!evt || !evt.isTrusted || !evt.target) return;
  5364.  
  5365.  
  5366.  
  5367.             muzTimestamp = 0;
  5368.             nszDropdown = null;
  5369.  
  5370.             /*
  5371.             const parentButton = HTMLElement.prototype.closest.call(evt.target, 'button, yt-icon, yt-icon-shape, icon-shape');
  5372.             if(parentButton){
  5373.               const kurMPC = HTMLElement.prototype.closest.call(parentButton, '[whole-message-clickable]') || 0;
  5374.               if(kurMPC){
  5375.                 evt.preventDefault();
  5376.                 evt.stopImmediatePropagation();
  5377.                 evt.stopPropagation();
  5378.               }
  5379.               return;
  5380.             }
  5381.             */
  5382.  
  5383.             /** @type {HTMLElement | null} */
  5384.             const kurMP = kRef(currentMenuPivotWR);
  5385.             if (!kurMP) return;
  5386.             const kurMPC = HTMLElement.prototype.closest.call(kurMP, '[menu-visible]') || 0;
  5387.  
  5388.             if (!kurMPC || !kurMPC.hasAttribute('whole-message-clickable')) return;
  5389.  
  5390.             if (!kurMPC.isClickableChatRow111 || !kurMPC.isClickableChatRow111() || !HTMLElement.prototype.contains.call(kurMPC, evt.target)) return;
  5391.  
  5392.  
  5393.             let targetDropDown = null;
  5394.             for (const dropdown of document.querySelectorAll('tp-yt-iron-dropdown.style-scope.yt-live-chat-app')) {
  5395.               if (dropdown && dropdown.positionTarget === kurMP) {
  5396.                 targetDropDown = dropdown;
  5397.               }
  5398.             }
  5399.  
  5400.             if (!targetDropDown) return;
  5401.  
  5402.  
  5403.             /*
  5404.             if (parentButton) {
  5405.               evt.preventDefault();
  5406.               evt.stopImmediatePropagation();
  5407.               evt.stopPropagation();
  5408.               currentMenuPivotWR = mWeakRef(kurMPC);
  5409.               return;
  5410.             } 
  5411.             */
  5412.  
  5413.             if ((nszDropdown = targetDropDown)) {
  5414.               muzTimestamp = Date.now();
  5415.               evt.stopImmediatePropagation();
  5416.               evt.stopPropagation();
  5417.               currentMenuPivotWR = mWeakRef(kurMPC);
  5418.  
  5419.               const listenOpts = { capture: true, passive: false, once: true };
  5420.  
  5421.               // remove unexcecuted eventHandler
  5422.               document.removeEventListener('mouseup', handlerObject, listenOpts);
  5423.               document.removeEventListener('mouseleave', handlerObject, listenOpts);
  5424.               document.removeEventListener('tap', handlerObject, listenOpts);
  5425.               document.removeEventListener('click', handlerObject, listenOpts);
  5426.  
  5427.               // inject one time eventHandler to by pass events
  5428.               document.addEventListener('mouseup', handlerObject, listenOpts);
  5429.               document.addEventListener('mouseleave', handlerObject, listenOpts);
  5430.               document.addEventListener('tap', handlerObject, listenOpts);
  5431.               document.addEventListener('click', handlerObject, listenOpts);
  5432.  
  5433.             }
  5434.  
  5435.           }, true);
  5436.  
  5437.         }
  5438.  
  5439.  
  5440.         // yt-live-chat-paid-message-renderer ??
  5441.  
  5442. /*
  5443.  
  5444. [...(new Set([...document.querySelectorAll('*')].filter(e=>e.is&&('shouldSupportWholeItemClick' in e)).map(e=>e.is))).keys()]
  5445.  
  5446.  
  5447. "yt-live-chat-ticker-paid-message-item-renderer"
  5448. "yt-live-chat-ticker-paid-sticker-item-renderer"
  5449. "yt-live-chat-paid-message-renderer"
  5450. "yt-live-chat-text-message-renderer"
  5451. "yt-live-chat-paid-sticker-renderer"
  5452.  
  5453. */
  5454.         
  5455.         // https://www.youtube.com/watch?v=oQzFi1NO7io
  5456.         customElements.whenDefined('yt-live-chat-text-message-renderer').then(() => {
  5457.  
  5458.  
  5459.           mightFirstCheckOnYtInit();
  5460.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-text-message-renderer hacks");
  5461.           console.log("[Begin]");
  5462.           (() => {
  5463.  
  5464.             const tag = "yt-live-chat-text-message-renderer"
  5465.             const dummy = document.createElement(tag);
  5466.  
  5467.             const cProto = getProto(dummy);
  5468.             if (!cProto || !cProto.attached) {
  5469.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5470.               return;
  5471.             }
  5472.  
  5473.             /*
  5474.  
  5475.  
  5476.  
  5477.                 remarks:
  5478.  
  5479.                 const w=new Set();
  5480.                 setInterval(()=>{
  5481.                 for(const a of document.getElementsByTagName('*')) if(a.shouldSupportWholeItemClick) w.add(a.is||'');
  5482.                 console.log([...w.keys()]);
  5483.                 },800);
  5484.  
  5485.  
  5486.                 [
  5487.                 "yt-live-chat-ticker-sponsor-item-renderer",
  5488.                 "yt-live-chat-banner-header-renderer",
  5489.                 "yt-live-chat-text-message-renderer",
  5490.                 "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5491.                 "ytd-sponsorships-live-chat-header-renderer",
  5492.                 "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer"
  5493.                 ]
  5494.  
  5495.             */
  5496.  
  5497.             cProto.isClickableChatRow111 = function () {
  5498.               return (
  5499.                 this.data && typeof this.shouldSupportWholeItemClick === 'function' && typeof this.hasModerationOverlayVisible === 'function' &&
  5500.                 this.data.contextMenuEndpoint && this.wholeMessageClickable && this.shouldSupportWholeItemClick() && !this.hasModerationOverlayVisible()
  5501.               ); // follow .onItemTap(a)
  5502.             }
  5503.  
  5504.  
  5505.  
  5506.             const toHookDocumentMouseDown = typeof cProto.shouldSupportWholeItemClick === 'function' && typeof cProto.hasModerationOverlayVisible === 'function';
  5507.  
  5508.             if (toHookDocumentMouseDown) {
  5509.  
  5510.               hookDocumentMouseDownSetupFn();
  5511.  
  5512.  
  5513.               console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent OK");
  5514.  
  5515.  
  5516.  
  5517.             } else {
  5518.  
  5519.               console.log("FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK - Doc MouseEvent NG");
  5520.  
  5521.             }
  5522.  
  5523.  
  5524.  
  5525.  
  5526.           })();
  5527.  
  5528.           console.log("[End]");
  5529.  
  5530.           console.groupEnd();
  5531.  
  5532.         }).catch(console.warn);
  5533.  
  5534.  
  5535.       }
  5536.  
  5537.  
  5538.       if (PREREQUEST_CONTEXT_MENU_ON_MOUSE_DOWN) {
  5539.  
  5540.         document.addEventListener('mousedown', function (evt) {
  5541.  
  5542.           const maxloopDOMTreeElements = 4;
  5543.           const maxloopYtCompontents = 4;
  5544.           let j1 = 0;
  5545.           let j2 = 0;
  5546.           let target = (evt || 0).target || 0;
  5547.           if (!target) return;
  5548.  
  5549.  
  5550.           while (target instanceof HTMLElement) {
  5551.             if (++j1 > maxloopDOMTreeElements) break;
  5552.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') break;
  5553.             target = nodeParent(target);
  5554.           }
  5555.           const components = [];
  5556.           while (target instanceof HTMLElement) {
  5557.             if (++j2 > maxloopYtCompontents) break;
  5558.             if (typeof (target.is || (target.inst || 0).is || null) === 'string') {
  5559.               components.push(target);
  5560.             }
  5561.             if (typeof (target.inst || target).showContextMenu === 'function') break;
  5562.             target = target.parentComponent || (target.inst || 0).parentComponent || null;
  5563.           }
  5564.           if (!(target instanceof HTMLElement)) return;
  5565.           const targetCnt = target.inst || target;
  5566.           if (typeof targetCnt.handleGetContextMenuResponse_ !== 'function' || typeof targetCnt.handleGetContextMenuError !== 'function') {
  5567.             console.log('Error Found: handleGetContextMenuResponse_ OR handleGetContextMenuError is not defined on a component with showContextMenu')
  5568.             return;
  5569.           }
  5570.  
  5571.           const endpoint = (targetCnt.data || 0).contextMenuEndpoint
  5572.           if (!endpoint) return;
  5573.           if (targetCnt.opened || !targetCnt.isAttached) return;
  5574.  
  5575.           if (typeof targetCnt.__cacheResolvedEndpointData__ !== 'function') {
  5576.             console.log(`preRequest for showContextMenu in ${targetCnt.is} is not yet supported.`)
  5577.           }
  5578.  
  5579.           let doPreRequest = false;
  5580.           if (components.length >= 2 && components[0].id === 'menu-button' && (target.$ || 0)['menu-button'] === components[0]) {
  5581.             doPreRequest = true;
  5582.           } else if (components.length === 1 && components[0] === target) {
  5583.             doPreRequest = true;
  5584.           } else if (components.length >= 2 && components[0].id === 'author-photo' && (target.$ || 0)['author-photo'] === components[0]) {
  5585.             doPreRequest = true;
  5586.           }
  5587.           if (doPreRequest === false) {
  5588.             console.log('doPreRequest = fasle on showContextMenu', components);
  5589.             return;
  5590.           }
  5591.  
  5592.           if (typeof targetCnt.__getCachedEndpointData__ !== 'function') return;
  5593.           if (targetCnt.__getCachedEndpointData__(endpoint)) return;
  5594.  
  5595.           if (!targetCnt.__showContextMenu_mutex_unlock_isEmpty__()) {
  5596.             console.log('preRequest on showContextMenu aborted due to stacked network request');
  5597.             return;
  5598.           }
  5599.  
  5600.  
  5601.           const onSuccess = (a) => {
  5602.             /*
  5603.  
  5604.               dQ() && (a = a.response);
  5605.               a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && this.showContextMenu_(a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  5606.               a.actions && Eu(this.hostElement, "yt-live-chat-actions", [a.actions])
  5607.  
  5608.             */
  5609.  
  5610.             a = a.response || a;
  5611.  
  5612.             if (!a) {
  5613.               console.log('unexpected error in prerequest for showContextMenu.onSuccess');
  5614.               return;
  5615.             }
  5616.  
  5617.             let z = null;
  5618.             a.liveChatItemContextMenuSupportedRenderers && a.liveChatItemContextMenuSupportedRenderers.menuRenderer && (z = a.liveChatItemContextMenuSupportedRenderers.menuRenderer);
  5619.  
  5620.             if (z) {
  5621.               a = z;
  5622.               targetCnt.__cacheResolvedEndpointData__(endpoint, a, true);
  5623.             }
  5624.  
  5625.           };
  5626.           const onFailure = (a) => {
  5627.  
  5628.             /*
  5629.  
  5630.               if (a instanceof Error || a instanceof Object || a instanceof String)
  5631.                   var b = a;
  5632.               hq(new xm("Error encountered calling GetLiveChatItemContextMenu",b))
  5633.  
  5634.             */
  5635.  
  5636.             targetCnt.__cacheResolvedEndpointData__(endpoint, null);
  5637.             // console.log('onFailure', a)
  5638.  
  5639.           };
  5640.  
  5641.           if (doPreRequest) {
  5642.  
  5643.             let propertyCounter = 0;
  5644.             let p1unlock = null;
  5645.             const p1 = new Promise(r => {
  5646.               p1unlock = r;
  5647.             });
  5648.             const p1Timeout = 800;
  5649.             const proxyKey = '__$$__proxy_to_this__$$__' + Date.now();
  5650.  
  5651.             try {
  5652.  
  5653.               const onSuccessHelperFn = function () {
  5654.                 p1unlock && p1unlock();
  5655.                 p1unlock = null;
  5656.                 if (propertyCounter !== 5) {
  5657.                   console.log('Error in prerequest for showContextMenu.onSuccessHelperFn')
  5658.                   return;
  5659.                 }
  5660.                 if (this[proxyKey] !== targetCnt) {
  5661.                   console.log('Error in prerequest for showContextMenu.this');
  5662.                   return;
  5663.                 }
  5664.                 onSuccess(...arguments);
  5665.               };
  5666.               const onFailureHelperFn = function () {
  5667.                 p1unlock && p1unlock();
  5668.                 p1unlock = null;
  5669.                 if (propertyCounter !== 5) {
  5670.                   console.log('Error in prerequest for showContextMenu.onFailureHelperFn')
  5671.                   return;
  5672.                 }
  5673.                 if (this[proxyKey] !== targetCnt) {
  5674.                   console.log('Error in prerequest for showContextMenu.this');
  5675.                   return;
  5676.                 }
  5677.                 onFailure(...arguments);
  5678.  
  5679.               }
  5680.               const fakeTargetCnt = new Proxy({
  5681.                 __showContextMenu_forceNativeRequest__: 1,
  5682.                 __showContextMenu_sync_mode_request__: 1,
  5683.                 get handleGetContextMenuResponse_() {
  5684.                   propertyCounter += 2;
  5685.                   return onSuccessHelperFn;
  5686.                 },
  5687.                 get handleGetContextMenuError() {
  5688.                   propertyCounter += 3;
  5689.                   return onFailureHelperFn;
  5690.                 }
  5691.               }, {
  5692.                 get(_, key, receiver) {
  5693.                   if (key in _) return _[key];
  5694.                   if (key === proxyKey) return targetCnt;
  5695.  
  5696.                   let giveNative = false;
  5697.                   if (key in targetCnt) {
  5698.                     if (key === 'data') giveNative = true;
  5699.                     else if (typeof targetCnt[key] === 'function') giveNative = true;
  5700.                   }
  5701.                   if (giveNative) return targetCnt[key];
  5702.                 }
  5703.               });
  5704.  
  5705.               const fakeEvent = (() => {
  5706.                 const { target, bubbles, cancelable, cancelBubble, srcElement, timeStamp, defaultPrevented, currentTarget, composed } = evt;
  5707.                 const nf = function () { }
  5708.                 const [stopPropagation, stopImmediatePropagation, preventDefault] = [nf, nf, nf];
  5709.  
  5710.                 return {
  5711.                   type: 'tap',
  5712.                   eventPhase: 0,
  5713.                   isTrusted: false,
  5714.                   __composed: true,
  5715.                   bubbles, cancelable, cancelBubble, timeStamp,
  5716.                   target, srcElement, defaultPrevented, currentTarget, composed,
  5717.                   stopPropagation, stopImmediatePropagation, preventDefault
  5718.                 };
  5719.               })(evt);
  5720.               targetCnt.showContextMenu.call(fakeTargetCnt, fakeEvent);
  5721.  
  5722.  
  5723.             } catch (e) {
  5724.               console.warn(e);
  5725.               propertyCounter = 7;
  5726.  
  5727.             }
  5728.             if (propertyCounter !== 5) {
  5729.               console.log('Error in prerequest for showContextMenu', propertyCounter);
  5730.               return;
  5731.             }
  5732.             targetCnt.__showContextMenu_assign_lock__(p1);
  5733.             setTimeout(() => {
  5734.               p1unlock && p1unlock();
  5735.               p1unlock = null;
  5736.             }, p1Timeout);
  5737.           }
  5738.  
  5739.  
  5740.  
  5741.  
  5742.  
  5743.  
  5744.         }, true);
  5745.  
  5746.  
  5747.       }
  5748.  
  5749.  
  5750.  
  5751.       /*
  5752.  
  5753.       const w=new Set(); for(const a of document.getElementsByTagName('*')) if(a.showContextMenu && a.showContextMenu_) w.add(a.is||''); console.log([...w.keys()])
  5754.  
  5755.       */
  5756.  
  5757.       let pTags = [];
  5758.       const sTags = [
  5759.         "yt-live-chat-ticker-sponsor-item-renderer",
  5760.         "yt-live-chat-banner-header-renderer",
  5761.         "yt-live-chat-text-message-renderer",
  5762.         "ytd-sponsorships-live-chat-gift-purchase-announcement-renderer",
  5763.         "ytd-sponsorships-live-chat-header-renderer",
  5764.         "ytd-sponsorships-live-chat-gift-redemption-announcement-renderer"
  5765.       ];
  5766.  
  5767.       for (const tag of sTags) {
  5768.         pTags.push(customElements.whenDefined(tag));
  5769.       }
  5770.  
  5771.  
  5772.       Promise.all(pTags).then(() => {
  5773.  
  5774.  
  5775.         mightFirstCheckOnYtInit();
  5776.         groupCollapsed("YouTube Super Fast Chat", " | fixShowContextMenu");
  5777.         console.log("[Begin]");
  5778.  
  5779.         for (const tag of sTags) {
  5780.  
  5781.  
  5782.  
  5783.           (() => {
  5784.  
  5785.             const dummy = document.createElement(tag);
  5786.  
  5787.             const cProto = getProto(dummy);
  5788.             if (!cProto || !cProto.attached) {
  5789.               console.warn(`proto.attached for ${tag} is unavailable.`);
  5790.               return;
  5791.             }
  5792.  
  5793.  
  5794.  
  5795.  
  5796.             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) {
  5797.  
  5798.               cProto.showContextMenu37_ = cProto.showContextMenu_;
  5799.               cProto.showContextMenu37 = cProto.showContextMenu;
  5800.  
  5801.               function deepCopy(obj, skipKeys) {
  5802.                 skipKeys = skipKeys || [];
  5803.                 if (!obj || typeof obj !== 'object') return obj;
  5804.                 if (Array.isArray(obj)) {
  5805.                   return obj.map(item => deepCopy(item, skipKeys));
  5806.                 }
  5807.                 const copy = {};
  5808.                 for (let key in obj) {
  5809.                   if (!skipKeys.includes(key)) {
  5810.                     copy[key] = deepCopy(obj[key], skipKeys);
  5811.                   }
  5812.                 }
  5813.                 return copy;
  5814.               }
  5815.  
  5816.               /*
  5817.               const wm37 = new WeakMap();
  5818.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  5819.               cProto.__cacheResolvedEndpointData__ = (endpoint, a, doDeepCopy) => {
  5820.                 if (a) {
  5821.                   if (doDeepCopy) a = deepCopy(a);
  5822.                   wm37.set(endpoint, a);
  5823.                 } else {
  5824.                   wm37.remove(endpoint);
  5825.                 }
  5826.               }
  5827.               cProto.__showContextMenuNetworkRequestMutex__ = null;
  5828.               cProto.__showContextMenuNetworkRequestMutexResolve__  = null;
  5829.               cProto.showContextMenu = function (a) {
  5830.                 if(this.__showContextMenu_forceNativeRequest__){
  5831.                   return this.showContextMenu37(a);
  5832.                 }
  5833.                 const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5834.                 if (!endpoint) {
  5835.                   return this.showContextMenu37(a);
  5836.                 }
  5837.                 this.__showContextMenuNetworkRequestMutex__ = (this.__showContextMenuNetworkRequestMutex__ || Promise.resolve())
  5838.                 .then(()=>new Promise(lockResolve=>{
  5839.  
  5840.                   if (endpoint !== (this.data || 0).contextMenuEndpoint || 0){
  5841.                     lockResolve();
  5842.                     return;
  5843.                   }
  5844.  
  5845.                   if (endpoint) {
  5846.                     let resolvedEndpoint = wm37.get(endpoint);
  5847.                     if (resolvedEndpoint) {
  5848.                       resolvedEndpoint = deepCopy(resolvedEndpoint);
  5849.                       // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  5850.                       Promise.resolve(resolvedEndpoint).then(() => {
  5851.                         this.showContextMenu37_(resolvedEndpoint);
  5852.                       });
  5853.                       lockResolve();
  5854.                       return;
  5855.                       //this.showContextMenu37_(JSON.parse(JSON.stringify(a)));
  5856.                       //return;
  5857.                     }
  5858.  
  5859.                     this.__showContextMenuNetworkRequestMutexResolve__ = new Promise(resolve=>{
  5860.                       this.__showContextMenuNetworkRequestMutexResolve__ = resolve;
  5861.  
  5862.                     }).then((a)=>{
  5863.  
  5864.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5865.                   if (endpoint) {
  5866.                     const f = this.__cacheResolvedEndpointData__
  5867.                     if (typeof f === 'function') f(endpoint, a, true);
  5868.                   }
  5869.                    this.showContextMenu37_(a);
  5870.                    lockResolve();
  5871.  
  5872.                     }).catch(console.warn)
  5873.  
  5874.                   }else{
  5875.  
  5876.                     this.__showContextMenuNetworkRequestMutexResolve__ = null;
  5877.                     this.showContextMenu37(a);
  5878.                     lockResolve();
  5879.                   }
  5880.  
  5881.  
  5882.  
  5883.  
  5884.                 })).catch(console.warn);
  5885.               }
  5886.  
  5887.               cProto.showContextMenu_ = function (a) {
  5888.  
  5889.                 let resolve = this.__showContextMenuNetworkRequestMutexResolve__;
  5890.                 this.__showContextMenuNetworkRequestMutexResolve__= null;
  5891.  
  5892.                 if (resolve) {
  5893.                   resolve(a);
  5894.                 } else {
  5895.                   return this.showContextMenu37_(a);
  5896.                 }
  5897.  
  5898.               }
  5899.               */
  5900.  
  5901.  
  5902.               const wm37 = new WeakMap();
  5903.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  5904.               cProto.__cacheResolvedEndpointData__ = (endpoint, a, doDeepCopy) => {
  5905.                 if (a) {
  5906.                   if (doDeepCopy) a = deepCopy(a);
  5907.                   wm37.set(endpoint, a);
  5908.                 } else {
  5909.                   wm37.remove(endpoint);
  5910.                 }
  5911.               }
  5912.               cProto.__getCachedEndpointData__ = function (endpoint) {
  5913.                 endpoint = endpoint || (this.data || 0).contextMenuEndpoint || 0;
  5914.                 if (endpoint) return wm37.get(endpoint);
  5915.                 return null;
  5916.               }
  5917.               cProto.__showCachedContextMenu__ = function (resolvedEndpoint) { // non-null
  5918.  
  5919.                 resolvedEndpoint = deepCopy(resolvedEndpoint);
  5920.                 // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  5921.                 Promise.resolve(resolvedEndpoint).then(() => {
  5922.                   this.__showContextMenu_skip_cacheResolvedEndpointData__ = 1;
  5923.                   this.showContextMenu_(resolvedEndpoint);
  5924.                   this.__showContextMenu_skip_cacheResolvedEndpointData__ = 0;
  5925.                 });
  5926.  
  5927.  
  5928.  
  5929.               }
  5930.               cProto.showContextMenu = function (a) {
  5931.                 if (!this.__showContextMenu_forceNativeRequest__) {
  5932.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5933.                   if (endpoint) {
  5934.                     const resolvedEndpoint = this.__getCachedEndpointData__(endpoint);
  5935.                     if (resolvedEndpoint) {
  5936.                       this.__showCachedContextMenu__(resolvedEndpoint);
  5937.                       return;
  5938.                     }
  5939.                   }
  5940.                 }
  5941.                 return this.showContextMenu37(a);
  5942.               }
  5943.  
  5944.               cProto.showContextMenu_ = function (a) {
  5945.                 if (!this.__showContextMenu_skip_cacheResolvedEndpointData__) {
  5946.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5947.                   if (endpoint) {
  5948.                     const f = this.__cacheResolvedEndpointData__;
  5949.                     if (typeof f === 'function') f(endpoint, a, true);
  5950.                   }
  5951.                 }
  5952.                 return this.showContextMenu37_(a);
  5953.               }
  5954.  
  5955.  
  5956.  
  5957.  
  5958.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN - OK", tag);
  5959.  
  5960.  
  5961.  
  5962.             } else {
  5963.  
  5964.               console.log("CACHE_SHOW_CONTEXT_MENU_FOR_REOPEN -  NG", tag);
  5965.  
  5966.             }
  5967.  
  5968.  
  5969.  
  5970.             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) {
  5971.  
  5972.  
  5973.               cProto.showContextMenu48 = cProto.showContextMenu;
  5974.  
  5975.  
  5976.               cProto.showContextMenu = function (a) {
  5977.  
  5978.                 const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  5979.                 if (endpoint && typeof this.is === 'string' && this.menuVisible === false && this.menuOpen === false) {
  5980.  
  5981.                   const parentComponent = this.parentComponent;
  5982.                   if (parentComponent && parentComponent.is === 'yt-live-chat-item-list-renderer' && parentComponent.contextMenuOpen === false && parentComponent.allowScroll === true) {
  5983.                     parentComponent.allowScroll = false;
  5984.                   }
  5985.                 }
  5986.  
  5987.                 return this.showContextMenu48.apply(this, arguments);
  5988.  
  5989.               }
  5990.  
  5991.  
  5992.  
  5993.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU - OK", tag);
  5994.  
  5995.  
  5996.  
  5997.             } else {
  5998.  
  5999.               console.log("ADVANCED_NOT_ALLOW_SCROLL_FOR_SHOW_CONTEXT_MENU -  NG", tag);
  6000.  
  6001.             }
  6002.  
  6003.  
  6004.  
  6005.  
  6006.  
  6007.             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) {
  6008.  
  6009.               cProto.showContextMenu47_ = cProto.showContextMenu_;
  6010.               cProto.showContextMenu47 = cProto.showContextMenu;
  6011.  
  6012.               const mutex = new Mutex();
  6013.               let __showContextMenu_mutex_unlock__ = null;
  6014.               cProto.__showContextMenu_mutex_unlock_isEmpty__ = () => {
  6015.                 return __showContextMenu_mutex_unlock__ === null;
  6016.               }
  6017.               cProto.__showContextMenu_assign_lock__ = function (p) {
  6018.  
  6019.  
  6020.                 mutex.lockWith(unlock => {
  6021.                   p.then(unlock);
  6022.                 });
  6023.  
  6024.               }
  6025.               let lastShowMenuTarget = null;
  6026.               cProto.showContextMenu = function (a) {
  6027.                 lastShowMenuTarget = this;
  6028.  
  6029.                 if (this.__showContextMenu_sync_mode_request__) {
  6030.  
  6031.                   return this.showContextMenu47(a);
  6032.                 } else {
  6033.  
  6034.  
  6035.                   mutex.lockWith(unlock => {
  6036.                     if (lastShowMenuTarget !== this) {
  6037.                       unlock();
  6038.                       return;
  6039.                     }
  6040.  
  6041.                     setTimeout(unlock, 800); // in case network failure
  6042.                     __showContextMenu_mutex_unlock__ = unlock;
  6043.                     try {
  6044.                       this.showContextMenu47(a);
  6045.                     } catch (e) {
  6046.                       console.warn(e);
  6047.                       unlock(); // in case function script error
  6048.                     }
  6049.  
  6050.                   });
  6051.  
  6052.                 }
  6053.  
  6054.  
  6055.               }
  6056.  
  6057.  
  6058.               cProto.showContextMenu_ = function (a) {
  6059.  
  6060.                 if (__showContextMenu_mutex_unlock__ && this === lastShowMenuTarget) {
  6061.                   __showContextMenu_mutex_unlock__();
  6062.                   __showContextMenu_mutex_unlock__ = null;
  6063.                 }
  6064.                 return this.showContextMenu47_(a);
  6065.  
  6066.               }
  6067.  
  6068.               /*
  6069.               const wm37 = new WeakMap();
  6070.               cProto.__showContextMenu_forceNativeRequest__ = 0;
  6071.               cProto.__cacheResolvedEndpointData__ = (endpoint, a, doDeepCopy) => {
  6072.                 if (a) {
  6073.                   if (doDeepCopy) a = deepCopy(a);
  6074.                   wm37.set(endpoint, a);
  6075.                 } else {
  6076.                   wm37.remove(endpoint);
  6077.                 }
  6078.               }
  6079.               cProto.__showContextMenuNetworkRequestMutex__ = null;
  6080.               cProto.__showContextMenuNetworkRequestMutexResolve__  = null;
  6081.               cProto.showContextMenu = function (a) {
  6082.                 if(this.__showContextMenu_forceNativeRequest__){
  6083.                   return this.showContextMenu37(a);
  6084.                 }
  6085.                 const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6086.                 if (!endpoint) {
  6087.                   return this.showContextMenu37(a);
  6088.                 }
  6089.                 this.__showContextMenuNetworkRequestMutex__ = (this.__showContextMenuNetworkRequestMutex__ || Promise.resolve())
  6090.                 .then(()=>new Promise(lockResolve=>{
  6091.  
  6092.                   if (endpoint !== (this.data || 0).contextMenuEndpoint || 0){
  6093.                     lockResolve();
  6094.                     return;
  6095.                   }
  6096.  
  6097.                   if (endpoint) {
  6098.                     let resolvedEndpoint = wm37.get(endpoint);
  6099.                     if (resolvedEndpoint) {
  6100.                       resolvedEndpoint = deepCopy(resolvedEndpoint);
  6101.                       // let b = deepCopy(resolvedEndpoint, ['trackingParams', 'clickTrackingParams'])
  6102.                       Promise.resolve(resolvedEndpoint).then(() => {
  6103.                         this.showContextMenu37_(resolvedEndpoint);
  6104.                       });
  6105.                       lockResolve();
  6106.                       return;
  6107.                       //this.showContextMenu37_(JSON.parse(JSON.stringify(a)));
  6108.                       //return;
  6109.                     }
  6110.  
  6111.                     this.__showContextMenuNetworkRequestMutexResolve__ = new Promise(resolve=>{
  6112.                       this.__showContextMenuNetworkRequestMutexResolve__ = resolve;
  6113.  
  6114.                     }).then((a)=>{
  6115.  
  6116.                   const endpoint = (this.data || 0).contextMenuEndpoint || 0;
  6117.                   if (endpoint) {
  6118.                     const f = this.__cacheResolvedEndpointData__
  6119.                     if (typeof f === 'function') f(endpoint, a, true);
  6120.                   }
  6121.                    this.showContextMenu37_(a);
  6122.                    lockResolve();
  6123.  
  6124.                     }).catch(console.warn)
  6125.  
  6126.                   }else{
  6127.  
  6128.                     this.__showContextMenuNetworkRequestMutexResolve__ = null;
  6129.                     this.showContextMenu37(a);
  6130.                     lockResolve();
  6131.                   }
  6132.  
  6133.  
  6134.  
  6135.  
  6136.                 })).catch(console.warn);
  6137.               }
  6138.  
  6139.               cProto.showContextMenu_ = function (a) {
  6140.  
  6141.                 let resolve = this.__showContextMenuNetworkRequestMutexResolve__;
  6142.                 this.__showContextMenuNetworkRequestMutexResolve__= null;
  6143.  
  6144.                 if (resolve) {
  6145.                   resolve(a);
  6146.                 } else {
  6147.                   return this.showContextMenu37_(a);
  6148.                 }
  6149.  
  6150.               }
  6151.               */
  6152.  
  6153.  
  6154.  
  6155.  
  6156.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU - OK", tag);
  6157.  
  6158.  
  6159.  
  6160.             } else {
  6161.  
  6162.               console.log("ENABLE_MUTEX_FOR_SHOW_CONTEXT_MENU -  NG", tag);
  6163.  
  6164.             }
  6165.  
  6166.  
  6167.  
  6168.  
  6169.           })();
  6170.  
  6171.         }
  6172.  
  6173.  
  6174.  
  6175.         console.log("[End]");
  6176.  
  6177.         console.groupEnd();
  6178.  
  6179.       }).catch(console.warn);
  6180.  
  6181.  
  6182.  
  6183.       customElements.whenDefined('tp-yt-iron-dropdown').then(() => {
  6184.  
  6185.         mightFirstCheckOnYtInit();
  6186.         groupCollapsed("YouTube Super Fast Chat", " | tp-yt-iron-dropdown hacks");
  6187.         console.log("[Begin]");
  6188.         (() => {
  6189.  
  6190.           const tag = "tp-yt-iron-dropdown";
  6191.           const dummy = document.createElement(tag);
  6192.  
  6193.           const cProto = getProto(dummy);
  6194.           if (!cProto || !cProto.attached) {
  6195.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6196.             return;
  6197.           }
  6198.  
  6199.  
  6200.           if (USE_VANILLA_DEREF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf34 && fnIntegrity(cProto.__deraf) === '2.42.24') {
  6201.             cProto.__deraf_hn__ = function (sId, fn) {
  6202.               const rhKey = `_rafHandler_${sId}`;
  6203.               const m = this[rhKey] || (this[rhKey] = new WeakMap());
  6204.               if (m.has(fn)) return m.get(fn);
  6205.               const resFn = () => {
  6206.                 this.__rafs[sId] = null;
  6207.                 fn.call(this)
  6208.               };
  6209.               m.set(fn, resFn);
  6210.               m.set(resFn, resFn);
  6211.               return resFn;
  6212.             };
  6213.             cProto.__deraf34 = cProto.__deraf;
  6214.             cProto.__deraf = function (a, b) { // sId, fn
  6215.               let c = this.__rafs;
  6216.               null !== c[a] && cancelAnimationFrame(c[a]);
  6217.               c[a] = requestAnimationFrame(this.__deraf_hn__(a, b));
  6218.             };
  6219.             console.log("USE_VANILLA_DEREF - OK");
  6220.           } else {
  6221.             console.log("USE_VANILLA_DEREF - NG");
  6222.           }
  6223.  
  6224.           if (FIX_DROPDOWN_DERAF && typeof cProto.__deraf === 'function' && cProto.__deraf.length === 2 && !cProto.__deraf66) {
  6225.             cProto.__deraf66 = cProto.__deraf;
  6226.             cProto.__deraf = function (sId, fn) {
  6227.               if (this.__byPassRAF__) {
  6228.                 Promise.resolve().then(() => {
  6229.                   fn.call(this);
  6230.                 });
  6231.               }
  6232.               let r = this.__deraf66.apply(this, arguments);
  6233.               return r;
  6234.             }
  6235.             console.log("FIX_DROPDOWN_DERAF - OK");
  6236.           } else {
  6237.             console.log("FIX_DROPDOWN_DERAF - NG");
  6238.           }
  6239.  
  6240.  
  6241.           if (BOOST_MENU_OPENCHANGED_RENDERING && typeof cProto.__openedChanged === 'function' && !cProto.__mtChanged__ && fnIntegrity(cProto.__openedChanged) === '0.46.20') {
  6242.  
  6243.             let lastClose = null;
  6244.             let lastOpen = null;
  6245.             let cid = 0;
  6246.  
  6247.             cProto.__mtChanged__ = function (b) {
  6248.  
  6249.               Promise.resolve().then(() => {
  6250.                 this._applyFocus();
  6251.               }).then(() => {
  6252.                 b ? this._renderOpened() : this._renderClosed();
  6253.               }).catch(console.warn);
  6254.  
  6255.             };
  6256.  
  6257.             const __moChanged__ = () => {
  6258.               if (!cid) return;
  6259.               // console.log(553, !!lastOpen, !!lastClose);
  6260.               cid = 0;
  6261.               if (lastOpen && !lastClose && lastOpen.isAttached) {
  6262.                 lastOpen.__mtChanged__(1)
  6263.               } else if (lastClose && !lastOpen && lastClose.isAttached) {
  6264.                 lastClose.__mtChanged__(0);
  6265.               }
  6266.               lastOpen = null;
  6267.               lastClose = null;
  6268.             };
  6269.  
  6270.  
  6271.             if (typeof cProto._openedChanged === 'function' && !cProto._openedChanged66) {
  6272.               cProto._openedChanged66 = cProto._openedChanged;
  6273.               cProto._openedChanged = function () {
  6274.                 // this.__byPassRAF__ = !lastOpen ? true : false; // or just true?
  6275.                 this.__byPassRAF__ = true;
  6276.                 let r = this._openedChanged66.apply(this, arguments);
  6277.                 this.__byPassRAF__ = false;
  6278.                 return r;
  6279.               }
  6280.             }
  6281.  
  6282.             const pSetGet = (key, pdThis, pdBase) => {
  6283.               // note: this is not really a standard way for the getOwnPropertyDescriptors; but it is sufficient to make the job done
  6284.               return {
  6285.                 get: (pdThis[key] || 0).get || (pdBase[key] || 0).get,
  6286.                 set: (pdThis[key] || 0).set || (pdBase[key] || 0).set
  6287.               };
  6288.             };
  6289.  
  6290.             cProto.__modifiedMenuPropsFn__ = function () {
  6291.               const pdThis = Object.getOwnPropertyDescriptors(this.constructor.prototype)
  6292.               const pdBase = Object.getOwnPropertyDescriptors(this)
  6293.  
  6294.               const pdAutoFitOnAttach = pSetGet('autoFitOnAttach', pdThis, pdBase);
  6295.               const pdExpandSizingTargetForScrollbars = pSetGet('expandSizingTargetForScrollbars', pdThis, pdBase);
  6296.               const pdAllowOutsideScroll = pSetGet('allowOutsideScroll', pdThis, pdBase);
  6297.  
  6298.               if (pdAutoFitOnAttach.get || pdAutoFitOnAttach.set) {
  6299.                 console.warn('there is setter/getter for autoFitOnAttach');
  6300.                 return;
  6301.               }
  6302.               if (pdExpandSizingTargetForScrollbars.get || pdExpandSizingTargetForScrollbars.set) {
  6303.                 console.warn('there is setter/getter for expandSizingTargetForScrollbars');
  6304.                 return;
  6305.               }
  6306.               if (!pdAllowOutsideScroll.get || !pdAllowOutsideScroll.set) {
  6307.                 console.warn('there is NO setter-getter for allowOutsideScroll');
  6308.                 return;
  6309.               }
  6310.  
  6311.               let { autoFitOnAttach, expandSizingTargetForScrollbars, allowOutsideScroll } = this;
  6312.  
  6313.               this.__AllowOutsideScrollPD__ = pdAllowOutsideScroll;
  6314.  
  6315.               const fitEnable = CHAT_MENU_REFIT_ALONG_SCROLLING === 2;
  6316.  
  6317.               Object.defineProperties(this, {
  6318.                 autoFitOnAttach: {
  6319.                   get() {
  6320.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6321.                     return autoFitOnAttach;
  6322.                   },
  6323.                   set(nv) {
  6324.                     autoFitOnAttach = nv;
  6325.                     return true;
  6326.                   },
  6327.                   enumerable: true,
  6328.                   configurable: true
  6329.                 }, expandSizingTargetForScrollbars: {
  6330.                   get() {
  6331.                     if (fitEnable && this._modifiedMenuPropOn062__) return true;
  6332.                     return expandSizingTargetForScrollbars;
  6333.                   },
  6334.                   set(nv) {
  6335.                     expandSizingTargetForScrollbars = nv;
  6336.                     return true;
  6337.                   },
  6338.                   enumerable: true,
  6339.                   configurable: true
  6340.                 }, allowOutsideScroll: {
  6341.                   get() {
  6342.                     if (this._modifiedMenuPropOn062__) return true;
  6343.                     return allowOutsideScroll;
  6344.                   },
  6345.                   set(nv) {
  6346.                     allowOutsideScroll = nv;
  6347.                     this.__AllowOutsideScrollPD__.set.call(this, nv);
  6348.                     return true;
  6349.                   },
  6350.                   enumerable: true,
  6351.                   configurable: true
  6352.                 }
  6353.               })
  6354.             };
  6355.  
  6356.             /*
  6357.                // ***** position() to be changed. *****
  6358.               tp-yt-iron-dropdown[class], tp-yt-iron-dropdown[class] #contentWrapper, tp-yt-iron-dropdown[class] ytd-menu-popup-renderer[class] {
  6359.  
  6360.                   overflow: visible !important;
  6361.                   min-width: max-content !important;
  6362.                   max-width: max-content !important;
  6363.                   max-height: max-content !important;
  6364.                   min-height: max-content !important;
  6365.                   white-space: nowrap;
  6366.               }
  6367.  
  6368.             */
  6369.             if (FIX_MENU_POSITION_N_SIZING_ON_SHOWN && typeof cProto.position === 'function' && !cProto.position34 && typeof cProto.refit === 'function') {
  6370.  
  6371.               let m34 = 0;
  6372.               cProto.__refitByPosition__ = function () {
  6373.                 m34++;
  6374.                 if (m34 <= 0) m34 = 0;
  6375.                 if (m34 !== 1) return;
  6376.                 const hostElement = this.hostElement || this;
  6377.                 if (document.visibilityState === 'visible') {
  6378.                   const sizingTarget = this.sizingTarget;
  6379.                   if (!sizingTarget) {
  6380.                     m34 = 0;
  6381.                     return;
  6382.                   }
  6383.  
  6384.                   /*
  6385.                   let useVisibilityCollapse = true;
  6386.                   if (HTMLElement.prototype.querySelector.call(sizingTarget, 'yt-icon:empty')) {
  6387.                     useVisibilityCollapse = false;
  6388.                   }
  6389.  
  6390.                   if (useVisibilityCollapse) {
  6391.                     hostElement.style.visibility = 'collapse';
  6392.                     sizingTarget.style.visibility = 'collapse';
  6393.                   } else {
  6394.                     hostElement.setAttribute('rNgzQ', '');
  6395.                     sizingTarget.setAttribute('rNgzQ', '');
  6396.                   }
  6397.                   */
  6398.                   hostElement.setAttribute('rNgzQ', '');
  6399.                   sizingTarget.setAttribute('rNgzQ', '');
  6400.  
  6401.                   const gn = () => {
  6402.                     /*
  6403.                     if (useVisibilityCollapse) {
  6404.                       hostElement.style.visibility = '';
  6405.                       sizingTarget.style.visibility = '';
  6406.                     } else {
  6407.                       hostElement.removeAttribute('rNgzQ');
  6408.                       sizingTarget.removeAttribute('rNgzQ');
  6409.                     }
  6410.                     */
  6411.                     hostElement.removeAttribute('rNgzQ');
  6412.                     sizingTarget.removeAttribute('rNgzQ');
  6413.                   }
  6414.  
  6415.                   const an = async () => {
  6416.                     while (m34 >= 1) {
  6417.                       await renderReadyPn(sizingTarget);
  6418.                       if (this.opened && this.isAttached && sizingTarget.isConnected === true && sizingTarget === this.sizingTarget) {
  6419.                         if (sizingTarget.matches('ytd-menu-popup-renderer[slot="dropdown-content"].yt-live-chat-app')) this.refit();
  6420.                       }
  6421.                       m34--;
  6422.                     }
  6423.                     m34 = 0;
  6424.                     Promise.resolve().then(gn);
  6425.                   }
  6426.                   setTimeout(an, 4); // wait those resizing function calls
  6427.  
  6428.  
  6429.                 } else {
  6430.                   m34 = 0;
  6431.                 }
  6432.               }
  6433.               cProto.position34 = cProto.position
  6434.               cProto.position = function () {
  6435.                 if (this._positionInitialize_) {
  6436.                   this._positionInitialize_ = 0;
  6437.                   this.__refitByPosition__();
  6438.                 }
  6439.                 let r = cProto.position34.apply(this, arguments);
  6440.                 return r;
  6441.               }
  6442.               console.log("FIX_MENU_POSITION_ON_SHOWN - OK");
  6443.  
  6444.             } else {
  6445.  
  6446.               console.log("FIX_MENU_POSITION_ON_SHOWN - NG");
  6447.  
  6448.             }
  6449.  
  6450.  
  6451.  
  6452.             cProto.__openedChanged = function () {
  6453.               this._positionInitialize_ = 1;
  6454.               // this.removeAttribute('horizontal-align')
  6455.               // this.removeAttribute('vertical-align')
  6456.               if (typeof this.__menuTypeCheck__ !== 'boolean') {
  6457.                 this.__menuTypeCheck__ = true;
  6458.                 if (CHAT_MENU_SCROLL_UNLOCKING) {
  6459.                   this._modifiedMenuPropOn062__ = false;
  6460.                   // console.log(513, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6461.                   // this.autoFitOnAttach = true;
  6462.                   // this.expandSizingTargetForScrollbars = true;
  6463.                   // this.allowOutsideScroll = true;
  6464.                   // console.log(519,Object.getOwnPropertyDescriptors(this.constructor.prototype))
  6465.                   this.__modifiedMenuPropsFn__();
  6466.                   // this.constrain= function(){}
  6467.                   // this.position= function(){}
  6468.  
  6469.                   // this.autoFitOnAttach = true;
  6470.                   // this.expandSizingTargetForScrollbars = true;
  6471.                   // this.allowOutsideScroll = true;
  6472.                 }
  6473.               }
  6474.               if (CHAT_MENU_SCROLL_UNLOCKING && this.opened) {
  6475.                 let newValue = null;
  6476.                 const positionTarget = this.positionTarget;
  6477.                 if (positionTarget && positionTarget.classList.contains('yt-live-chat-text-message-renderer')) {
  6478.                   if (this._modifiedMenuPropOn062__ === false) {
  6479.                     newValue = true;
  6480.                   }
  6481.                 } else if (this._modifiedMenuPropOn062__ === true) {
  6482.                   newValue = false;
  6483.                 }
  6484.                 if (newValue !== null) {
  6485.                   const beforeAllowOutsideScroll = this.allowOutsideScroll;
  6486.                   this._modifiedMenuPropOn062__ = newValue;
  6487.                   const afterAllowOutsideScroll = this.allowOutsideScroll;
  6488.                   if (beforeAllowOutsideScroll !== afterAllowOutsideScroll) this.__AllowOutsideScrollPD__.set.call(this, afterAllowOutsideScroll);
  6489.                 }
  6490.               }
  6491.  
  6492.               if (this.opened) {
  6493.  
  6494.                 Promise.resolve().then(() => {
  6495.  
  6496.                   this._prepareRenderOpened();
  6497.                 }).then(() => {
  6498.                   this._manager.addOverlay(this);
  6499.                   if (this._manager._overlays.length === 1) {
  6500.                     lastOpen = this;
  6501.                     lastClose = null;
  6502.                   } else {
  6503.                     return 1;
  6504.                   }
  6505.                   // if (cid) {
  6506.                   //   clearTimeout(cid);
  6507.                   //   cid = -1;
  6508.                   //   this.__moChanged__();
  6509.                   //   cid = 0;
  6510.                   // } else {
  6511.                   //   cid = -1;
  6512.                   //   this.__moChanged__();
  6513.                   //   cid = 0;
  6514.                   // }
  6515.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6516.                   // console.log(580, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6517.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6518.                   cid = cid || requestAnimationFrame(__moChanged__);
  6519.                 }).then((r) => {
  6520.  
  6521.                   if (r) this.__mtChanged__(1);
  6522.                 }).catch(console.warn);
  6523.  
  6524.               } else {
  6525.                 Promise.resolve().then(() => {
  6526.                   this._manager.removeOverlay(this);
  6527.                   if (this._manager._overlays.length === 0) {
  6528.                     lastClose = this;
  6529.                     lastOpen = null;
  6530.                   } else {
  6531.                     return 1;
  6532.                   }
  6533.                   // cid = cid > 0 ? clearTimeout(cid) : 0;
  6534.                   // console.log(581, this.positionTarget && this.positionTarget.classList.contains('yt-live-chat-text-message-renderer'))
  6535.                   // cid = cid || setTimeout(__moChanged__, delay1);
  6536.                   cid = cid || requestAnimationFrame(__moChanged__);
  6537.                 }).then((r) => {
  6538.                   if (r) this.__mtChanged__(0);
  6539.                 }).catch(console.warn);
  6540.  
  6541.               }
  6542.  
  6543.             }
  6544.             console.log("BOOST_MENU_OPENCHANGED_RENDERING - OK");
  6545.  
  6546.           } else {
  6547.  
  6548.             assertor(() => fnIntegrity(cProto.__openedChanged, '0.46.20'));
  6549.             console.log("FIX_MENU_REOPEN_RENDER_PERFORMANC_1 - NG");
  6550.  
  6551.           }
  6552.  
  6553.  
  6554.           if (FIX_CLICKING_MESSAGE_MENU_DISPLAY_ON_MOUSE_CLICK && typeof cProto.__openedChanged === 'function' && !cProto.__openedChanged82) {
  6555.  
  6556.             cProto.__openedChanged82 = cProto.__openedChanged;
  6557.  
  6558.  
  6559.             cProto.__openedChanged = function () {
  6560.  
  6561.               // currentMenuPivotWR = null;
  6562.               // console.log(1480, '__openedChanged.A', this.positionTarget)
  6563.  
  6564.  
  6565.  
  6566.               // if (this.opened && this.positionTarget) {
  6567.  
  6568.               //   const positionTarget = this.positionTarget;
  6569.               //   console.log(1480, '__openedChanged.B', positionTarget)
  6570.               //   currentMenuPivotWR = mWeakRef(positionTarget);
  6571.  
  6572.               // }
  6573.  
  6574.               const positionTarget = this.positionTarget;
  6575.               currentMenuPivotWR = positionTarget ? mWeakRef(positionTarget) : null;
  6576.               return this.__openedChanged82.apply(this, arguments);
  6577.             }
  6578.           }
  6579.  
  6580.  
  6581.           // if(FIX_MENU_CAPTURE_SCROLL && typeof cProto.__onCaptureScroll === 'function' && !cProto.__onCaptureScroll66){
  6582.  
  6583.           //   cProto.__onCaptureScroll66 = cProto.__onCaptureScroll;
  6584.  
  6585.           //   cProto.__onCaptureScroll = function(a){
  6586.  
  6587.           //     const q = true;
  6588.           //     if(this.scrollAction === 'lock'  && q && this.opened){
  6589.  
  6590.           //       // console.log(9107, this.scrollAction, this.__isAnimating, this.opened, a); // lock; __isAnimating = false
  6591.           //       async function af() {
  6592.           //         this.__isAnimating && this._finishRenderOpened();
  6593.           //         if (!this.opened) return;
  6594.           //         this.__restoreScrollPosition();
  6595.           //         await new Promise(r => requestAnimationFrame(r));
  6596.           //         if (!this.opened) return;
  6597.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6598.           //         if (!this.opened) return;
  6599.           //         this.__restoreScrollPosition();
  6600.           //         await new Promise(r => requestAnimationFrame(r));
  6601.           //         if (!this.opened) return;
  6602.           //         this.opened && this.__isAnimating && this._finishRenderOpened();
  6603.           //         if (!this.opened) return;
  6604.           //         this.opened && !this.__isAnimating && this.refit();
  6605.           //       }
  6606.           //       Promise.resolve().then(af);
  6607.  
  6608.           //        return cProto.__onCaptureScroll66.apply(this, arguments);
  6609.           //     }else{
  6610.  
  6611.           //       // console.log(9102, this.scrollAction, this.__isAnimating, this.opened, a); // lock
  6612.  
  6613.           //       return cProto.__onCaptureScroll66.apply(this, arguments);
  6614.           //     }
  6615.           //   }
  6616.           //   console.log("FIX_MENU_CAPTURE_SCROLL - OK");
  6617.           // }else{
  6618.           //   console.log("FIX_MENU_CAPTURE_SCROLL - NG");
  6619.  
  6620.           // }
  6621.  
  6622.  
  6623.         })();
  6624.  
  6625.         console.log("[End]");
  6626.  
  6627.         console.groupEnd();
  6628.  
  6629.       }).catch(console.warn);
  6630.  
  6631.  
  6632.       /*
  6633.       if (LIVE_CHAT_FLUSH_ON_FOREGROUND_ONLY) {
  6634.  
  6635.  
  6636.         customElements.whenDefined("yt-live-chat-renderer").then(() => {
  6637.  
  6638.           mightFirstCheckOnYtInit();
  6639.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-chat-renderer hacks");
  6640.           console.log("[Begin]");
  6641.           (() => {
  6642.  
  6643.             const tag = "yt-live-chat-renderer"
  6644.             const dummy = document.createElement(tag);
  6645.  
  6646.             const cProto = getProto(dummy);
  6647.             if (!cProto || !cProto.attached) {
  6648.               console.warn(`proto.attached for ${tag} is unavailable.`);
  6649.               return;
  6650.             }
  6651.  
  6652.  
  6653.             if (typeof cProto._flushProperties === 'function' && !cProto._flushProperties22 && cProto._flushProperties.length === 0) {
  6654.  
  6655.               cProto.flushPendingCount = 0;
  6656.               cProto._flushProperties22 = cProto._flushProperties;
  6657.  
  6658.               cProto._flushProperties = function () {
  6659.                 if (foregroundPromiseForLiveChatFlush) return;
  6660.                 this.flushPendingCount++;
  6661.                 const tid = this.flushPendingCount;
  6662.                 getForegroundPromiseForLiveChatFlush().then(() => {
  6663.                   if (tid !== this.flushPendingCount) return;
  6664.                   // console.log('_flushProperties22', Date.now())
  6665.                   this._flushProperties22();
  6666.                 });
  6667.               };
  6668.  
  6669.  
  6670.               console.log("cProto._flushProperties - OK");
  6671.  
  6672.             } else {
  6673.               console.log("cProto._flushProperties - NG");
  6674.  
  6675.             }
  6676.  
  6677.           })();
  6678.  
  6679.           console.log("[End]");
  6680.  
  6681.           console.groupEnd();
  6682.  
  6683.         }).catch(console.warn);
  6684.  
  6685.  
  6686.       }
  6687.       */
  6688.  
  6689.  
  6690.  
  6691.  
  6692.  
  6693.  
  6694.       /*
  6695.  
  6696.  
  6697.  
  6698.  
  6699.  
  6700.           var FU = function() {
  6701.               var a = this;
  6702.               this.nextHandle_ = 1;
  6703.               this.clients_ = {};
  6704.               this.JSC$10323_callbacks_ = {};
  6705.               this.unsubscribeAsyncHandles_ = {};
  6706.               this.subscribe = vl(function(b, c, d) {
  6707.                   var e = Geb(b);
  6708.                   if (e in a.clients_)
  6709.                       e in a.unsubscribeAsyncHandles_ && Jq.cancel(a.unsubscribeAsyncHandles_[e]);
  6710.                   else {
  6711.                       a: {
  6712.                           var h = Geb(b), l;
  6713.                           for (l in a.unsubscribeAsyncHandles_) {
  6714.                               var m = a.clients_[l];
  6715.                               if (m instanceof KO) {
  6716.                                   delete a.clients_[l];
  6717.                                   delete a.JSC$10323_callbacks_[l];
  6718.                                   Jq.cancel(a.unsubscribeAsyncHandles_[l]);
  6719.                                   delete a.unsubscribeAsyncHandles_[l];
  6720.                                   i6a(m);
  6721.                                   m.objectId_ = new FQa(h);
  6722.                                   m.register();
  6723.                                   d = m;
  6724.                                   break a
  6725.                               }
  6726.                           }
  6727.                           d.objectSource = b.invalidationId.objectSource;
  6728.                           d.objectId = h;
  6729.                           if (b = b.webAuthConfigurationData)
  6730.                               b.multiUserSessionIndex && (d.sessionIndex = parseInt(b.multiUserSessionIndex, 10)),
  6731.                               b.pageId && (d.pageId = b.pageId);
  6732.                           d = new KO(d,a.handleInvalidationData_.bind(a));
  6733.                           d.register()
  6734.                       }
  6735.                       a.clients_[e] = d;
  6736.                       a.JSC$10323_callbacks_[e] = {}
  6737.                   }
  6738.                   d = a.nextHandle_++;
  6739.                   a.JSC$10323_callbacks_[e][d] = c;
  6740.                   return d
  6741.               })
  6742.           };
  6743.           FU.prototype.unsubscribe = function(a, b) {
  6744.               var c = Geb(a);
  6745.               if (c in this.JSC$10323_callbacks_ && (delete this.JSC$10323_callbacks_[c][b],
  6746.               !this.JSC$10323_callbacks_[c].length)) {
  6747.                   var d = this.clients_[c];
  6748.                   b = Jq.run(function() {
  6749.                       ei(d);
  6750.                       delete this.clients_[c];
  6751.                       delete this.unsubscribeAsyncHandles_[c]
  6752.                   }
  6753.                   .bind(this));
  6754.                   this.unsubscribeAsyncHandles_[c] = b
  6755.               }
  6756.           }
  6757.           ;
  6758.  
  6759.  
  6760.       */
  6761.  
  6762.  
  6763.  
  6764.  
  6765.       const onManagerFound = (dummyManager) => {
  6766.         if (!dummyManager || typeof dummyManager !== 'object') return;
  6767.  
  6768.         const mgrProto = dummyManager.constructor.prototype;
  6769.  
  6770.         let keyCallbackStore = '';
  6771.         for (const [key, v] of Object.entries(dummyManager)) {
  6772.           if (key.includes('_callbacks_')) keyCallbackStore = key;
  6773.         }
  6774.  
  6775.         if (!keyCallbackStore || typeof mgrProto.unsubscribe !== 'function' || mgrProto.unsubscribe.length !== 2) return;
  6776.  
  6777.         if (mgrProto.unsubscribe16) return;
  6778.  
  6779.         mgrProto.unsubscribe16 = mgrProto.unsubscribe;
  6780.  
  6781.         groupCollapsed("YouTube Super Fast Chat", " | *live-chat-manager* hacks");
  6782.         console.log("[Begin]");
  6783.  
  6784.  
  6785.         // const isEmptyObject = (a) => Object.keys(a).length === 0;
  6786.         const isEmptyObject = (obj) => {
  6787.           for (let key in obj) {
  6788.             if (obj.hasOwnProperty(key)) return false;
  6789.           }
  6790.           return true;
  6791.         }
  6792.  
  6793.         const idMapper = new Map();
  6794.  
  6795.         const convertId = function (objectId) {
  6796.           if (!objectId || typeof objectId !== 'string') return null;
  6797.  
  6798.           let result = idMapper.get(objectId)
  6799.           if (result) return result;
  6800.           result = atob(objectId.replace(/-/g, "+").replace(/_/g, "/"));
  6801.           idMapper.set(objectId, result)
  6802.           return result;
  6803.         }
  6804.  
  6805.  
  6806.         const rafHandleHolder = [];
  6807.  
  6808.         let pzw = 0;
  6809.         let lza = 0;
  6810.         const rafHandlerFn = () => {
  6811.           pzw = 0;
  6812.           if (rafHandleHolder.length === 1) {
  6813.             const f = rafHandleHolder[0];
  6814.             rafHandleHolder.length = 0;
  6815.             f();
  6816.           } else if (rafHandleHolder.length > 1) {
  6817.             const arr = rafHandleHolder.slice(0);
  6818.             rafHandleHolder.length = 0;
  6819.             for (const fn of arr) fn();
  6820.           }
  6821.         };
  6822.  
  6823.  
  6824.         if (CHANGE_MANAGER_UNSUBSCRIBE) {
  6825.  
  6826.           const checkIntegrityForSubscribe = (mgr) => {
  6827.             if (mgr
  6828.               && typeof mgr.unsubscribe16 === 'function' && mgr.unsubscribe16.length === 2
  6829.               && typeof mgr.subscribe18 === 'function' && (mgr.subscribe18.length === 0 || mgr.subscribe18.length === 3)) {
  6830.  
  6831.               const ns = new Set(Object.keys(mgr));
  6832.               const ms = new Set(Object.keys(mgr.constructor.prototype));
  6833.  
  6834.               if (ns.size >= 6 && ms.size >= 4) {
  6835.                 // including 'subscribe18'
  6836.                 // 'unsubscribe16', 'subscribe19'
  6837.  
  6838.                 let r = 0;
  6839.                 for (const k of ['nextHandle_', 'clients_', keyCallbackStore, 'unsubscribeAsyncHandles_', 'subscribe', 'subscribe18']) {
  6840.                   r += ns.has(k) ? 1 : 0;
  6841.                 }
  6842.                 for (const k of ['unsubscribe', 'handleInvalidationData_', 'unsubscribe16', 'subscribe19']) {
  6843.                   r += ms.has(k) ? 1 : 0;
  6844.                 }
  6845.                 if (r === 10) {
  6846.                   const isObject = (c) => (c || 0).constructor === Object;
  6847.  
  6848.                   if (isObject(mgr['clients_']) && isObject(mgr[keyCallbackStore]) && isObject(mgr['unsubscribeAsyncHandles_'])) {
  6849.  
  6850.                     return true;
  6851.                   }
  6852.  
  6853.  
  6854.                 }
  6855.  
  6856.               }
  6857.  
  6858.  
  6859.             }
  6860.             return false;
  6861.           }
  6862.  
  6863.           mgrProto.subscribe19 = function (o, f, opts) {
  6864.  
  6865.             const ct_clients_ = this.clients_ || 0;
  6866.             const ct_handles_ = this.unsubscribeAsyncHandles_ || 0;
  6867.  
  6868.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.subscribe18.apply(this, arguments);
  6869.  
  6870.             let objectId = ((o || 0).invalidationId || 0).objectId;
  6871.             if (!objectId) return this.subscribe18.apply(this, arguments);
  6872.             objectId = convertId(objectId);
  6873.  
  6874.             // console.log('subscribe', objectId, ct_clients_[objectId], arguments);
  6875.  
  6876.             if (ct_clients_[objectId]) {
  6877.               if (ct_handles_[objectId] < 0) delete ct_handles_[objectId];
  6878.             }
  6879.  
  6880.             return this.subscribe18.apply(this, arguments);
  6881.           }
  6882.  
  6883.           mgrProto.unsubscribe = function (o, d) {
  6884.             if (!this.subscribe18 && typeof this.subscribe === 'function') {
  6885.               this.subscribe18 = this.subscribe;
  6886.               this.subscribe = this.subscribe19;
  6887.               this.__doCustomSubscribe__ = checkIntegrityForSubscribe(this);
  6888.             }
  6889.             const ct_clients_ = this.clients_;
  6890.             const ct_handles_ = this.unsubscribeAsyncHandles_;
  6891.             if (this.__doCustomSubscribe__ !== true || !ct_clients_ || !ct_handles_) return this.unsubscribe16.apply(this, arguments);
  6892.  
  6893.             let objectId = ((o || 0).invalidationId || 0).objectId;
  6894.             if (!objectId) return this.unsubscribe16.apply(this, arguments);
  6895.  
  6896.             objectId = convertId(objectId);
  6897.  
  6898.  
  6899.             // console.log('unsubscribe', objectId, ct_clients_[objectId], arguments);
  6900.  
  6901.             const callbacks = this[keyCallbackStore] || 0;
  6902.             const callbackObj = callbacks[objectId] || 0;
  6903.  
  6904.  
  6905.             if (callbackObj && (delete callbackObj[d], isEmptyObject(callbackObj))) {
  6906.               const w = ct_clients_[objectId];
  6907.               --lza;
  6908.               if (lza < -1e9) lza = -1;
  6909.               const qta = lza;
  6910.               rafHandleHolder.push(() => {
  6911.                 if (qta === ct_handles_[objectId]) {
  6912.                   const o = {
  6913.                     callbacks, callbackObj,
  6914.                     client: ct_clients_[objectId],
  6915.                     handle: ct_handles_[objectId]
  6916.                   };
  6917.                   let p = 0;
  6918.                   try {
  6919.                     if (ct_clients_[objectId] === w) {
  6920.                       w && "function" === typeof w.dispose && w.dispose();
  6921.                       delete ct_clients_[objectId];
  6922.                       delete ct_handles_[objectId];
  6923.                       p = 1;
  6924.                     } else {
  6925.                       // w && "function" === typeof w.dispose && w.dispose();
  6926.                       // delete ct_clients_[objectId];
  6927.                       // delete ct_handles_[objectId];
  6928.                       p = 2;
  6929.                     }
  6930.                   } catch (e) {
  6931.                     console.warn(e);
  6932.                   }
  6933.                   console.log(`unsubscribed: ${p}`, this, o);
  6934.                 }
  6935.               });
  6936.               ct_handles_[objectId] = qta;
  6937.               if (pzw === 0) {
  6938.                 pzw = requestAnimationFrame(rafHandlerFn);
  6939.               }
  6940.             }
  6941.           }
  6942.  
  6943.  
  6944.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - OK")
  6945.  
  6946.         } else {
  6947.  
  6948.           console.log("CHANGE_MANAGER_UNSUBSCRIBE - NG")
  6949.         }
  6950.  
  6951.         console.log("[End]");
  6952.  
  6953.         console.groupEnd();
  6954.  
  6955.       }
  6956.  
  6957.  
  6958.  
  6959.       /*
  6960.  
  6961.  
  6962.               a.prototype.async = function(e, h) {
  6963.                   return 0 < h ? Iq.run(e.bind(this), h) : ~Kq.run(e.bind(this))
  6964.               }
  6965.               ;
  6966.               a.prototype.cancelAsync = function(e) {
  6967.                   0 > e ? Kq.cancel(~e) : Iq.cancel(e)
  6968.               }
  6969.  
  6970.       */
  6971.  
  6972.  
  6973.  
  6974.       customElements.whenDefined("yt-invalidation-continuation").then(() => {
  6975.  
  6976.         let __dummyManager__ = null;
  6977.  
  6978.         mightFirstCheckOnYtInit();
  6979.         groupCollapsed("YouTube Super Fast Chat", " | yt-invalidation-continuation hacks");
  6980.         console.log("[Begin]");
  6981.         (() => {
  6982.  
  6983.           const tag = "yt-invalidation-continuation"
  6984.           const dummy = document.createElement(tag);
  6985.  
  6986.           const cProto = getProto(dummy);
  6987.           if (!cProto || !cProto.attached) {
  6988.             console.warn(`proto.attached for ${tag} is unavailable.`);
  6989.             return;
  6990.           }
  6991.  
  6992.           const dummyManager = (dummy.inst || dummy).manager_ || 0;
  6993.           __dummyManager__ = dummyManager;
  6994.  
  6995.           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) {
  6996.  
  6997.  
  6998.             const rafHub = new RAFHub();
  6999.  
  7000.             rafHub.keepRAF = true;
  7001.             cProto.async71 = cProto.async;
  7002.             cProto.cancelAsync71 = cProto.cancelAsync;
  7003.  
  7004.             // mostly for subscription timeoutMs 10000ms
  7005.             let mcw = 1; // 1, 3, 5, ...
  7006.             let arr = new Map();
  7007.  
  7008.             let __asyncInited__ = 0;
  7009.             let __timeoutStartId__ = null;
  7010.             const __asyncInit__ = () => {
  7011.  
  7012.               if (__asyncInited__) return;
  7013.               __asyncInited__ = 1;
  7014.  
  7015.               __timeoutStartId__ = setTimeout(() => { });
  7016.               mcw = __timeoutStartId__ * 2 + 1;
  7017.  
  7018.               setInterval(() => {
  7019.  
  7020.                 if (!arr.length) return;
  7021.  
  7022.                 const p = Date.now();
  7023.                 let deleteKeys = [];
  7024.                 arr.forEach((entry, key) => {
  7025.  
  7026.  
  7027.                   if (entry.cid === -1) {
  7028.                     entry.cid = -2;
  7029.                   } else if (entry.cid === -2) {
  7030.  
  7031.                     let offset = p - entry.add
  7032.                     if (offset < 0) offset = 0;
  7033.                     let delay2 = entry.delay - offset;
  7034.                     if (delay2 < 0) delay2 = 0;
  7035.                     entry.cid = setTimeout(entry.q(), delay2);
  7036.                     entry.q = null;
  7037.  
  7038.                   } else if (entry.add + entry.delay < p) {
  7039.                     deleteKeys.push(key);
  7040.  
  7041.                   }
  7042.  
  7043.                 })
  7044.  
  7045.                 for (const key of deleteKeys) arr.delete(key);
  7046.  
  7047.               }, 2000)
  7048.  
  7049.             }
  7050.  
  7051.  
  7052.  
  7053.  
  7054.             cProto.async = function (e, h) {
  7055.  
  7056.               if (!(0 < h)) return this.async71(e, h); // unknown timing Fn
  7057.  
  7058.               if (h < 8000) return this.async71(e, h) * 2; // native setTimeout
  7059.  
  7060.               if (typeof h !== 'number') return this.async71(e, h); // exceptional case
  7061.  
  7062.  
  7063.               if (!this.__asyncInited__) {
  7064.                 this.__asyncInited__ = 1;
  7065.                 __asyncInit__();
  7066.               }
  7067.               mcw += 2; // 2K+3, 2K+4, ...
  7068.               if (mcw > 1e9) mcw = mcw % 1e4;
  7069.               const cid = mcw;
  7070.               const q = () => {
  7071.                 return () => {
  7072.                   console.log('async h > 8000');
  7073.                   e.call(this);
  7074.                 }
  7075.               }
  7076.               // setTimeout(q, delay)
  7077.               arr.set(cid, {
  7078.                 cid: -1, // -1 -> -2 -> cid
  7079.                 add: Date.now(),
  7080.                 q,
  7081.                 delay: h
  7082.               });
  7083.               // console.log('cid-async', cid)
  7084.               return cid;
  7085.  
  7086.             }
  7087.  
  7088.  
  7089.             cProto.cancelAsync = function (e) {
  7090.  
  7091.               if (typeof e !== 'number') return this.cancelAsync71(e); // exceptional case
  7092.  
  7093.               // console.log('cid-unasync', e)
  7094.  
  7095.               if (0 > e) return this.cancelAsync71(e); // unknown timing fn
  7096.  
  7097.               if (e > __timeoutStartId__ * 2) { // __timeoutStartId__ is recorded and min is 2K+1
  7098.  
  7099.                 if ((e % 2) === 0) return this.cancelAsync71(e / 2); // 2(K+1), 2(K+2), ...
  7100.  
  7101.                 if (!arr.has(e)) return; // duplciated cancel
  7102.  
  7103.                 const entry = arr.get(e);
  7104.                 if (entry.cid < 0) {
  7105.                   entry.cid = 0;
  7106.                   arr.delete(e);
  7107.                 } else {
  7108.                   clearTimeout(entry.cid); // cid >= 1
  7109.                   entry.cid = 0;
  7110.                   arr.delete(e);
  7111.                 }
  7112.  
  7113.               } else {
  7114.  
  7115.                 return this.cancelAsync71(e);
  7116.  
  7117.               }
  7118.  
  7119.             }
  7120.  
  7121.             console.log("CHANGE_DATA_FLUSH_ASYNC - OK");
  7122.  
  7123.           } else {
  7124.             console.log("CHANGE_DATA_FLUSH_ASYNC - NG");
  7125.  
  7126.           }
  7127.  
  7128.         })();
  7129.  
  7130.         console.log("[End]");
  7131.  
  7132.         console.groupEnd();
  7133.  
  7134.  
  7135.  
  7136.         onManagerFound(__dummyManager__);
  7137.  
  7138.       }).catch(console.warn);
  7139.  
  7140.  
  7141.  
  7142.  
  7143.       if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1) {
  7144.  
  7145.  
  7146.  
  7147.         customElements.whenDefined("yt-live-interactivity-component-background").then(() => {
  7148.  
  7149.  
  7150.           mightFirstCheckOnYtInit();
  7151.           groupCollapsed("YouTube Super Fast Chat", " | yt-live-interactivity-component-background hacks");
  7152.           console.log("[Begin]");
  7153.           (() => {
  7154.  
  7155.             const tag = "yt-live-interactivity-component-background"
  7156.             const dummy = document.createElement(tag);
  7157.  
  7158.             const cProto = getProto(dummy);
  7159.             if (!cProto || !cProto.attached) {
  7160.               console.warn(`proto.attached for ${tag} is unavailable.`);
  7161.               return;
  7162.             }
  7163.  
  7164.  
  7165.             if (INTERACTIVITY_BACKGROUND_ANIMATION >= 1 && typeof cProto.maybeLoadAnimationBackground === 'function' && !cProto.maybeLoadAnimationBackground77 && cProto.maybeLoadAnimationBackground.length === 0) {
  7166.  
  7167.               cProto.maybeLoadAnimationBackground77 = cProto.maybeLoadAnimationBackground;
  7168.               cProto.maybeLoadAnimationBackground = function () {
  7169.                 let toRun = true;
  7170.                 if (!this.__bypassDisableAnimationBackground__) {
  7171.                   if (INTERACTIVITY_BACKGROUND_ANIMATION === 1) {
  7172.                     if (!this.lottieAnimation) {
  7173.                       if (this.useAnimationBackground === true) {
  7174.                         console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7175.                       }
  7176.                       toRun = false;
  7177.                     }
  7178.                   } else if (INTERACTIVITY_BACKGROUND_ANIMATION === 2) {
  7179.                     if (this.useAnimationBackground === true) {
  7180.                       console.log('DISABLE_INTERACTIVITY_BACKGROUND_ANIMATION', this.lottieAnimation);
  7181.                       this.useAnimationBackground = false;
  7182.                     }
  7183.                   }
  7184.                 }
  7185.                 if (toRun) {
  7186.                   return this.maybeLoadAnimationBackground77.apply(this, arguments);
  7187.                 }
  7188.               }
  7189.  
  7190.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - OK`);
  7191.  
  7192.             } else {
  7193.               console.log(`INTERACTIVITY_BACKGROUND_ANIMATION${INTERACTIVITY_BACKGROUND_ANIMATION} - NG`);
  7194.  
  7195.             }
  7196.  
  7197.           })();
  7198.  
  7199.           console.log("[End]");
  7200.  
  7201.           console.groupEnd();
  7202.  
  7203.  
  7204.         }).catch(console.warn);
  7205.  
  7206.       }
  7207.  
  7208.  
  7209.     }
  7210.  
  7211.  
  7212.  
  7213.  
  7214.     promiseForCustomYtElementsReady.then(onRegistryReadyForDOMOperations);
  7215.  
  7216.     const fixJsonParse = () => {
  7217.  
  7218.  
  7219.  
  7220.       if (jsonParseFix && typeof JSON.parse === 'function' && !JSON.parse68) {
  7221.  
  7222.         let { _parse, _JSON } = jsonParseFix;
  7223.  
  7224.  
  7225.         let error = 0;
  7226.         try {
  7227.           _parse.apply(JSON, ["{}"])
  7228.           _JSON = JSON;
  7229.         } catch (e) {
  7230.           error = 1;
  7231.         }
  7232.         if (error === 1) {
  7233.  
  7234.           try {
  7235.             _parse.apply(_JSON, ["{}"])
  7236.           } catch (e) {
  7237.             error = 2;
  7238.           }
  7239.           if (error === 2) {
  7240.             return;
  7241.           }
  7242.         }
  7243.  
  7244.  
  7245.         JSON.parse68 = JSON.parse;
  7246.  
  7247.         JSON.parse = function parse(a, b) {
  7248.           const stack = (new Error()).stack;
  7249.           if (stack.includes('.readyStateChangeHandler_')) return _parse.apply(_JSON, arguments);
  7250.           return this.parse68(...arguments);
  7251.         };
  7252.  
  7253.         JSON.parse.toString = function () {
  7254.           return JSON.parse68.toString();
  7255.         };
  7256.  
  7257.         jsonParseFix = null;
  7258.  
  7259.       }
  7260.  
  7261.     }
  7262.  
  7263.     if (DE_JSONPRUNE_FOR_readyStateChangeHandler_) {
  7264.       promiseForCustomYtElementsReady.then(fixJsonParse);
  7265.       fixJsonParse();
  7266.     }
  7267.  
  7268.   });
  7269.  
  7270.  
  7271.  
  7272. })({ IntersectionObserver });